/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */ /* this file is part of evince, a gnome document viewer * * Copyright (C) 2004 Red Hat, Inc * * Evince is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * Evince is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. */ #include "config.h" #include #include #include #include #include #include #include "ev-mapping.h" #include "ev-document-forms.h" #include "ev-document-images.h" #include "ev-document-links.h" #include "ev-document-misc.h" #include "ev-document-transition.h" #include "ev-pixbuf-cache.h" #include "ev-transition-animation.h" #include "ev-view-marshal.h" #include "ev-document-annotations.h" #include "ev-annotation-window.h" #include "ev-view.h" #include "ev-view-accessible.h" #include "ev-view-private.h" #include "ev-view-type-builtins.h" #define EV_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass)) #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW)) #define EV_VIEW_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass)) enum { PROP_0, PROP_CONTINUOUS, PROP_DUAL_PAGE, PROP_FULLSCREEN, PROP_PRESENTATION, PROP_SIZING_MODE, PROP_ZOOM, PROP_ROTATION, PROP_HAS_SELECTION, }; enum { SIGNAL_BINDING_ACTIVATED, SIGNAL_HANDLE_LINK, SIGNAL_EXTERNAL_LINK, SIGNAL_POPUP_MENU, N_SIGNALS, }; enum { TARGET_DND_URI, TARGET_DND_TEXT, TARGET_DND_IMAGE }; static guint signals[N_SIGNALS]; typedef enum { EV_VIEW_FIND_NEXT, EV_VIEW_FIND_PREV } EvViewFindDirection; #define ZOOM_IN_FACTOR 1.2 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR) #define SCROLL_TIME 150 /*** Scrolling ***/ static void ev_view_set_scroll_adjustments (GtkLayout *layout, GtkAdjustment *hadjustment, GtkAdjustment *vadjustment); static void view_update_range_and_current_page (EvView *view); static void set_scroll_adjustment (EvView *view, GtkOrientation orientation, GtkAdjustment *adjustment); static void add_scroll_binding_keypad (GtkBindingSet *binding_set, guint keyval, GdkModifierType modifiers, GtkScrollType scroll, gboolean horizontal); static void ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect); /*** Geometry computations ***/ static void compute_border (EvView *view, int width, int height, GtkBorder *border); static void get_page_y_offset (EvView *view, int page, int *y_offset); static gboolean get_page_extents (EvView *view, gint page, GdkRectangle *page_area, GtkBorder *border); static void view_rect_to_doc_rect (EvView *view, GdkRectangle *view_rect, GdkRectangle *page_area, EvRectangle *doc_rect); static void doc_rect_to_view_rect (EvView *view, int page, EvRectangle *doc_rect, GdkRectangle *view_rect); static gboolean get_dual_even_left (EvView *view); static void find_page_at_location (EvView *view, gdouble x, gdouble y, gint *page, gint *x_offset, gint *y_offset); static void doc_point_to_view_point (EvView *view, int page, EvPoint *doc_point, GdkPoint *view_point); /*** Hyperrefs ***/ static EvLink * ev_view_get_link_at_location (EvView *view, gdouble x, gdouble y); static char* tip_from_link (EvView *view, EvLink *link); /*** Forms ***/ static EvFormField *ev_view_get_form_field_at_location (EvView *view, gdouble x, gdouble y); /*** Annotations ***/ static EvAnnotation *ev_view_get_annotation_at_location (EvView *view, gdouble x, gdouble y); static void show_annotation_windows (EvView *view, gint page); static void hide_annotation_windows (EvView *view, gint page); /*** GtkWidget implementation ***/ static void ev_view_size_request_continuous_dual_page (EvView *view, GtkRequisition *requisition); static void ev_view_size_request_continuous (EvView *view, GtkRequisition *requisition); static void ev_view_size_request_dual_page (EvView *view, GtkRequisition *requisition); static void ev_view_size_request_single_page (EvView *view, GtkRequisition *requisition); static void ev_view_size_request (GtkWidget *widget, GtkRequisition *requisition); static void ev_view_size_allocate (GtkWidget *widget, GtkAllocation *allocation); static void ev_view_realize (GtkWidget *widget); static gboolean ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event); static gboolean ev_view_expose_event (GtkWidget *widget, GdkEventExpose *event); static gboolean ev_view_popup_menu (GtkWidget *widget); static gboolean ev_view_button_press_event (GtkWidget *widget, GdkEventButton *event); static gboolean ev_view_motion_notify_event (GtkWidget *widget, GdkEventMotion *event); static gboolean ev_view_button_release_event (GtkWidget *widget, GdkEventButton *event); static gboolean ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing *event); static gboolean ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing *event); static void ev_view_style_set (GtkWidget *widget, GtkStyle *old_style); static void ev_view_remove_all (EvView *view); static AtkObject *ev_view_get_accessible (GtkWidget *widget); /*** Drawing ***/ static guint32 ev_gdk_color_to_rgb (const GdkColor *color); static void draw_rubberband (GtkWidget *widget, GdkWindow *window, const GdkRectangle *rect, guchar alpha); static void highlight_find_results (EvView *view, int page); static void draw_one_page (EvView *view, gint page, cairo_t *cr, GdkRectangle *page_area, GtkBorder *border, GdkRectangle *expose_area, gboolean *page_ready); static void draw_loading_text (EvView *view, GdkRectangle *page_area, GdkRectangle *expose_area); static void ev_view_reload_page (EvView *view, gint page, GdkRegion *region); /*** Callbacks ***/ static void ev_view_change_page (EvView *view, gint new_page, gboolean start_transition); static void job_finished_cb (EvPixbufCache *pixbuf_cache, GdkRegion *region, EvView *view); static void ev_view_page_changed_cb (EvDocumentModel *model, gint old_page, gint new_page, EvView *view); static void on_adjustment_value_changed (GtkAdjustment *adjustment, EvView *view); /*** GObject ***/ static void ev_view_finalize (GObject *object); static void ev_view_destroy (GtkObject *object); static void ev_view_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void ev_view_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static void ev_view_class_init (EvViewClass *class); static void ev_view_init (EvView *view); /*** Zoom and sizing ***/ static double zoom_for_size_fit_width (gdouble doc_width, gdouble doc_height, int target_width, int target_height); static double zoom_for_size_fit_height (gdouble doc_width, gdouble doc_height, int target_width, int target_height); static double zoom_for_size_best_fit (gdouble doc_width, gdouble doc_height, int target_width, int target_height); static void ev_view_zoom_for_size (EvView *view, int width, int height); static void ev_view_zoom_for_size_presentation (EvView *view, int width, int height); static void ev_view_zoom_for_size_continuous_and_dual_page (EvView *view, int width, int height); static void ev_view_zoom_for_size_continuous (EvView *view, int width, int height); static void ev_view_zoom_for_size_dual_page (EvView *view, int width, int height); static void ev_view_zoom_for_size_single_page (EvView *view, int width, int height); /*** Cursors ***/ static GdkCursor* ev_view_create_invisible_cursor (void); static void ev_view_set_cursor (EvView *view, EvViewCursor new_cursor); static void ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y); /*** Find ***/ static gint ev_view_find_get_n_results (EvView *view, gint page); static EvRectangle *ev_view_find_get_result (EvView *view, gint page, gint result); static void jump_to_find_result (EvView *view); static void jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift); /*** Selection ***/ static void compute_selections (EvView *view, EvSelectionStyle style, GdkPoint *start, GdkPoint *stop); static void clear_selection (EvView *view); static void clear_link_selected (EvView *view); static void selection_free (EvViewSelection *selection); static char* get_selected_text (EvView *ev_view); static void ev_view_primary_get_cb (GtkClipboard *clipboard, GtkSelectionData *selection_data, guint info, gpointer data); static void ev_view_primary_clear_cb (GtkClipboard *clipboard, gpointer data); static void ev_view_update_primary_selection (EvView *ev_view); /*** Presentation ***/ static void ev_view_presentation_transition_start (EvView *ev_view); static void ev_view_presentation_transition_stop (EvView *ev_view); G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT) /* HeightToPage cache */ #define EV_HEIGHT_TO_PAGE_CACHE_KEY "ev-height-to-page-cache" static void build_height_to_page (EvHeightToPageCache *cache, EvDocument *document, gint rotation) { gboolean swap, uniform, dual_even_left; int i; double uniform_height, page_height, next_page_height; double saved_height; gdouble u_width, u_height; gint n_pages; swap = (rotation == 90 || rotation == 270); uniform = ev_document_is_page_size_uniform (document); n_pages = ev_document_get_n_pages (document); dual_even_left = (n_pages > 2); g_free (cache->height_to_page); g_free (cache->dual_height_to_page); cache->rotation = rotation; cache->height_to_page = g_new0 (gdouble, n_pages + 1); cache->dual_height_to_page = g_new0 (gdouble, n_pages + 2); if (uniform) ev_document_get_page_size (document, 0, &u_width, &u_height); saved_height = 0; for (i = 0; i <= n_pages; i++) { if (uniform) { uniform_height = swap ? u_width : u_height; cache->height_to_page[i] = i * uniform_height; } else { if (i < n_pages) { gdouble w, h; ev_document_get_page_size (document, i, &w, &h); page_height = swap ? w : h; } else { page_height = 0; } cache->height_to_page[i] = saved_height; saved_height += page_height; } } if (dual_even_left && !uniform) { gdouble w, h; ev_document_get_page_size (document, 0, &w, &h); saved_height = swap ? w : h; } else { saved_height = 0; } for (i = dual_even_left; i < n_pages + 2; i += 2) { if (uniform) { uniform_height = swap ? u_width : u_height; cache->dual_height_to_page[i] = ((i + dual_even_left) / 2) * uniform_height; if (i + 1 < n_pages + 2) cache->dual_height_to_page[i + 1] = ((i + dual_even_left) / 2) * uniform_height; } else { if (i + 1 < n_pages) { gdouble w, h; ev_document_get_page_size (document, i + 1, &w, &h); next_page_height = swap ? w : h; } else { next_page_height = 0; } if (i < n_pages) { gdouble w, h; ev_document_get_page_size (document, i, &w, &h); page_height = swap ? w : h; } else { page_height = 0; } if (i + 1 < n_pages + 2) { cache->dual_height_to_page[i] = saved_height; cache->dual_height_to_page[i + 1] = saved_height; saved_height += MAX(page_height, next_page_height); } else { cache->dual_height_to_page[i] = saved_height; } } } } static void ev_height_to_page_cache_get_height (EvHeightToPageCache *cache, EvDocument *document, gint page, gint rotation, gdouble *height, gdouble *dual_height) { if (cache->rotation != rotation) build_height_to_page (cache, document, rotation); *height = cache->height_to_page[page]; *dual_height = cache->dual_height_to_page[page]; } static void ev_height_to_page_cache_free (EvHeightToPageCache *cache) { if (cache->height_to_page) { g_free (cache->height_to_page); cache->height_to_page = NULL; } if (cache->dual_height_to_page) { g_free (cache->dual_height_to_page); cache->dual_height_to_page = NULL; } g_free (cache); } static EvHeightToPageCache * ev_view_get_height_to_page_cache (EvView *view) { EvHeightToPageCache *cache; if (!view->document) return NULL; cache = g_object_get_data (G_OBJECT (view->document), EV_HEIGHT_TO_PAGE_CACHE_KEY); if (!cache) { cache = g_new0 (EvHeightToPageCache, 1); build_height_to_page (cache, view->document, view->rotation); g_object_set_data_full (G_OBJECT (view->document), EV_HEIGHT_TO_PAGE_CACHE_KEY, cache, (GDestroyNotify)ev_height_to_page_cache_free); } return cache; } static void ev_view_get_height_to_page (EvView *view, gint page, gint *height, gint *dual_height) { gdouble h, dh; if (!view->height_to_page_cache) return; ev_height_to_page_cache_get_height (view->height_to_page_cache, view->document, page, view->rotation, &h, &dh); if (height) *height = (gint)(h * view->scale + 0.5); if (dual_height) *dual_height = (gint)(dh * view->scale + 0.5); } static void scroll_to_point (EvView *view, gdouble x, gdouble y, GtkOrientation orientation) { if (orientation == GTK_ORIENTATION_VERTICAL) { if (view->continuous) { gtk_adjustment_clamp_page (view->vadjustment, y - view->spacing / 2, y + view->vadjustment->page_size); } else { gtk_adjustment_set_value (view->vadjustment, CLAMP (y, view->vadjustment->lower, view->vadjustment->upper - view->vadjustment->page_size)); } } else { if (view->dual_page) { gtk_adjustment_clamp_page (view->hadjustment, x, x + view->hadjustment->page_size); } else { gtk_adjustment_set_value (view->hadjustment, CLAMP (x, view->hadjustment->lower, view->hadjustment->upper - view->hadjustment->page_size)); } } } static void ev_view_scroll_to_page_position (EvView *view, GtkOrientation orientation) { gdouble x, y; if (!view->document) return; if ((orientation == GTK_ORIENTATION_VERTICAL && view->pending_point.y == 0) || (orientation == GTK_ORIENTATION_HORIZONTAL && view->pending_point.x == 0)) { GdkRectangle page_area; GtkBorder border; get_page_extents (view, view->current_page, &page_area, &border); x = page_area.x; y = page_area.y; } else { GdkPoint view_point; doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point); x = view_point.x; y = view_point.y; } scroll_to_point (view, x, y, orientation); } static void view_set_adjustment_values (EvView *view, GtkOrientation orientation) { GtkWidget *widget = GTK_WIDGET (view); GtkAdjustment *adjustment; int requisition; int allocation; double factor; gint new_value; if (orientation == GTK_ORIENTATION_HORIZONTAL) { requisition = widget->requisition.width; allocation = widget->allocation.width; adjustment = view->hadjustment; } else { requisition = widget->requisition.height; allocation = widget->allocation.height; adjustment = view->vadjustment; } if (!adjustment) return; factor = 1.0; switch (view->pending_scroll) { case SCROLL_TO_KEEP_POSITION: case SCROLL_TO_FIND_LOCATION: factor = (adjustment->value) / adjustment->upper; break; case SCROLL_TO_PAGE_POSITION: break; case SCROLL_TO_CENTER: factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper; break; } adjustment->page_size = allocation; adjustment->step_increment = allocation * 0.1; adjustment->page_increment = allocation * 0.9; adjustment->lower = 0; adjustment->upper = MAX (allocation, requisition); /* * We add 0.5 to the values before to average out our rounding errors. */ switch (view->pending_scroll) { case SCROLL_TO_KEEP_POSITION: case SCROLL_TO_FIND_LOCATION: new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size); gtk_adjustment_set_value (adjustment, (int)new_value); break; case SCROLL_TO_PAGE_POSITION: ev_view_scroll_to_page_position (view, orientation); break; case SCROLL_TO_CENTER: new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5, 0, adjustment->upper - adjustment->page_size); gtk_adjustment_set_value (adjustment, (int)new_value); break; } gtk_adjustment_changed (adjustment); } static void view_update_range_and_current_page (EvView *view) { gint current_page; gint best_current_page = -1; gint start = view->start_page; gint end = view->end_page; /* Presentation trumps all other modes */ if (view->presentation) { view->start_page = view->current_page; view->end_page = view->current_page; } else if (view->continuous) { GdkRectangle current_area, unused, page_area; GtkBorder border; gboolean found = FALSE; gint area_max = -1, area; int i; if (!(view->vadjustment && view->hadjustment)) return; current_area.x = view->hadjustment->value; current_area.width = view->hadjustment->upper; current_area.y = view->vadjustment->value; current_area.height = view->vadjustment->page_size; for (i = 0; i < ev_document_get_n_pages (view->document); i++) { get_page_extents (view, i, &page_area, &border); if (gdk_rectangle_intersect (¤t_area, &page_area, &unused)) { area = unused.width * unused.height; if (!found) { area_max = area; view->start_page = i; found = TRUE; best_current_page = i; } if (area > area_max) { best_current_page = (area == area_max) ? MIN (i, best_current_page) : i; area_max = area; } view->end_page = i; } else if (found && view->current_page <= view->end_page) { break; } } } else if (view->dual_page) { if (view->current_page % 2 == get_dual_even_left (view)) { view->start_page = view->current_page; if (view->current_page + 1 < ev_document_get_n_pages (view->document)) view->end_page = view->start_page + 1; else view->end_page = view->start_page; } else { if (view->current_page < 1) view->start_page = view->current_page; else view->start_page = view->current_page - 1; view->end_page = view->current_page; } } else { view->start_page = view->current_page; view->end_page = view->current_page; } best_current_page = MAX (best_current_page, view->start_page); current_page = ev_document_model_get_page (view->model); if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) { view->current_page = best_current_page; ev_document_model_set_page (view->model, best_current_page); } if (start != view->start_page || end != view->end_page) { gint i; for (i = start; i < view->start_page; i++) { hide_annotation_windows (view, i); } for (i = end; i > view->end_page; i--) { hide_annotation_windows (view, i); } } ev_pixbuf_cache_set_page_range (view->pixbuf_cache, view->start_page, view->end_page, view->rotation, view->scale, view->selection_info.selections); } static void set_scroll_adjustment (EvView *view, GtkOrientation orientation, GtkAdjustment *adjustment) { GtkAdjustment **to_set; if (orientation == GTK_ORIENTATION_HORIZONTAL) to_set = &view->hadjustment; else to_set = &view->vadjustment; if (*to_set != adjustment) { if (*to_set) { g_signal_handlers_disconnect_by_func (*to_set, (gpointer) on_adjustment_value_changed, view); g_object_unref (*to_set); } *to_set = adjustment; view_set_adjustment_values (view, orientation); if (*to_set) { g_object_ref (*to_set); g_signal_connect (*to_set, "value_changed", G_CALLBACK (on_adjustment_value_changed), view); } } } static void ev_view_set_scroll_adjustments (GtkLayout *layout, GtkAdjustment *hadjustment, GtkAdjustment *vadjustment) { EvView *view = EV_VIEW (layout); set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment); set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment); on_adjustment_value_changed (NULL, view); } static void add_scroll_binding_keypad (GtkBindingSet *binding_set, guint keyval, GdkModifierType modifiers, GtkScrollType scroll, gboolean horizontal) { guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left; gtk_binding_entry_add_signal (binding_set, keyval, modifiers, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE, scroll, G_TYPE_BOOLEAN, horizontal); gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE, scroll, G_TYPE_BOOLEAN, horizontal); } void ev_view_scroll (EvView *view, GtkScrollType scroll, gboolean horizontal) { GtkAdjustment *adjustment; double value, increment; gboolean first_page = FALSE; gboolean last_page = FALSE; view->jump_to_find_result = FALSE; if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) { switch (scroll) { case GTK_SCROLL_PAGE_BACKWARD: case GTK_SCROLL_STEP_BACKWARD: ev_view_previous_page (view); break; case GTK_SCROLL_PAGE_FORWARD: case GTK_SCROLL_STEP_FORWARD: ev_view_next_page (view); break; default: break; } return; } /* Assign values for increment and vertical adjustment */ adjustment = horizontal ? view->hadjustment : view->vadjustment; increment = adjustment->page_size * 0.75; value = adjustment->value; /* Assign boolean for first and last page */ if (view->current_page == 0) first_page = TRUE; if (view->current_page == ev_document_get_n_pages (view->document) - 1) last_page = TRUE; switch (scroll) { case GTK_SCROLL_PAGE_BACKWARD: /* Do not jump backwards if at the first page */ if (value == (adjustment->lower) && first_page) { /* Do nothing */ /* At the top of a page, assign the upper bound limit of previous page */ } else if (value == (adjustment->lower)) { value = adjustment->upper - adjustment->page_size; ev_view_previous_page (view); /* Jump to the top */ } else { value = MAX (value - increment, adjustment->lower); } break; case GTK_SCROLL_PAGE_FORWARD: /* Do not jump forward if at the last page */ if (value == (adjustment->upper - adjustment->page_size) && last_page) { /* Do nothing */ /* At the bottom of a page, assign the lower bound limit of next page */ } else if (value == (adjustment->upper - adjustment->page_size)) { value = 0; ev_view_next_page (view); /* Jump to the bottom */ } else { value = MIN (value + increment, adjustment->upper - adjustment->page_size); } break; case GTK_SCROLL_STEP_BACKWARD: value -= adjustment->step_increment; break; case GTK_SCROLL_STEP_FORWARD: value += adjustment->step_increment; break; case GTK_SCROLL_STEP_DOWN: value -= adjustment->step_increment / 10; break; case GTK_SCROLL_STEP_UP: value += adjustment->step_increment / 10; break; default: break; } value = CLAMP (value, adjustment->lower, adjustment->upper - adjustment->page_size); gtk_adjustment_set_value (adjustment, value); } #define MARGIN 5 static void ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect) { GtkWidget *widget = GTK_WIDGET (view); GtkAdjustment *adjustment; int value; view->pending_scroll = SCROLL_TO_FIND_LOCATION; adjustment = view->vadjustment; if (rect->y < adjustment->value) { value = MAX (adjustment->lower, rect->y - MARGIN); gtk_adjustment_set_value (view->vadjustment, value); } else if (rect->y + rect->height > adjustment->value + widget->allocation.height) { value = MIN (adjustment->upper, rect->y + rect->height - widget->allocation.height + MARGIN); gtk_adjustment_set_value (view->vadjustment, value); } adjustment = view->hadjustment; if (rect->x < adjustment->value) { value = MAX (adjustment->lower, rect->x - MARGIN); gtk_adjustment_set_value (view->hadjustment, value); } else if (rect->x + rect->height > adjustment->value + widget->allocation.width) { value = MIN (adjustment->upper, rect->x + rect->width - widget->allocation.width + MARGIN); gtk_adjustment_set_value (view->hadjustment, value); } gtk_widget_queue_resize (GTK_WIDGET (view)); } /*** Geometry computations ***/ static void compute_border (EvView *view, int width, int height, GtkBorder *border) { if (view->presentation) { border->left = 0; border->right = 0; border->top = 0; border->bottom = 0; } else { ev_document_misc_get_page_border_size (width, height, border); } } void _get_page_size_for_scale_and_rotation (EvDocument *document, gint page, gdouble scale, gint rotation, gint *page_width, gint *page_height) { gdouble w, h; gint width, height; ev_document_get_page_size (document, page, &w, &h); width = (gint)(w * scale + 0.5); height = (gint)(h * scale + 0.5); if (page_width) *page_width = (rotation == 0 || rotation == 180) ? width : height; if (page_height) *page_height = (rotation == 0 || rotation == 180) ? height : width; } static void ev_view_get_page_size (EvView *view, gint page, gint *page_width, gint *page_height) { _get_page_size_for_scale_and_rotation (view->document, page, view->scale, view->rotation, page_width, page_height); } static void ev_view_get_max_page_size (EvView *view, gint *max_width, gint *max_height) { double w, h; gint width, height; ev_document_get_max_page_size (view->document, &w, &h); width = (gint)(w * view->scale + 0.5); height = (gint)(h * view->scale + 0.5); if (max_width) *max_width = (view->rotation == 0 || view->rotation == 180) ? width : height; if (max_height) *max_height = (view->rotation == 0 || view->rotation == 180) ? height : width; } static void get_page_y_offset (EvView *view, int page, int *y_offset) { int max_width, offset; GtkBorder border; g_return_if_fail (y_offset != NULL); ev_view_get_max_page_size (view, &max_width, NULL); compute_border (view, max_width, max_width, &border); if (view->dual_page) { ev_view_get_height_to_page (view, page, NULL, &offset); offset += ((page + get_dual_even_left (view)) / 2 + 1) * view->spacing + ((page + get_dual_even_left (view)) / 2 ) * (border.top + border.bottom); } else { ev_view_get_height_to_page (view, page, &offset, NULL); offset += (page + 1) * view->spacing + page * (border.top + border.bottom); } *y_offset = offset; return; } static gboolean get_page_extents (EvView *view, gint page, GdkRectangle *page_area, GtkBorder *border) { GtkWidget *widget; int width, height; widget = GTK_WIDGET (view); /* Get the size of the page */ ev_view_get_page_size (view, page, &width, &height); compute_border (view, width, height, border); page_area->width = width + border->left + border->right; page_area->height = height + border->top + border->bottom; if (view->presentation) { page_area->x = (MAX (0, widget->allocation.width - width))/2; page_area->y = (MAX (0, widget->allocation.height - height))/2; } else if (view->continuous) { gint max_width; gint x, y; ev_view_get_max_page_size (view, &max_width, NULL); max_width = max_width + border->left + border->right; /* Get the location of the bounding box */ if (view->dual_page) { x = view->spacing + ((page % 2 == get_dual_even_left (view)) ? 0 : 1) * (max_width + view->spacing); x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2; if (page % 2 == get_dual_even_left (view)) x = x + (max_width - width - border->left - border->right); } else { x = view->spacing; x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2; } get_page_y_offset (view, page, &y); page_area->x = x; page_area->y = y; } else { gint x, y; if (view->dual_page) { gint width_2, height_2; gint max_width = width; gint max_height = height; GtkBorder overall_border; gint other_page; other_page = (page % 2 == get_dual_even_left (view)) ? page + 1: page - 1; /* First, we get the bounding box of the two pages */ if (other_page < ev_document_get_n_pages (view->document) && (0 <= other_page)) { ev_view_get_page_size (view, other_page, &width_2, &height_2); if (width_2 > width) max_width = width_2; if (height_2 > height) max_height = height_2; } compute_border (view, max_width, max_height, &overall_border); /* Find the offsets */ x = view->spacing; y = view->spacing; /* Adjust for being the left or right page */ if (page % 2 == get_dual_even_left (view)) x = x + max_width - width; else x = x + (max_width + overall_border.left + overall_border.right) + view->spacing; y = y + (max_height - height)/2; /* Adjust for extra allocation */ x = x + MAX (0, widget->allocation.width - ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2; y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2; } else { x = view->spacing; y = view->spacing; /* Adjust for extra allocation */ x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2; y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom + view->spacing * 2))/2; } page_area->x = x; page_area->y = y; } return TRUE; } static void get_doc_page_size (EvView *view, gint page, gdouble *width, gdouble *height) { double w, h; ev_document_get_page_size (view->document, page, &w, &h); if (view->rotation == 0 || view->rotation == 180) { if (width) *width = w; if (height) *height = h; } else { if (width) *width = h; if (height) *height = w; } } static void view_point_to_doc_point (EvView *view, GdkPoint *view_point, GdkRectangle *page_area, double *doc_point_x, double *doc_point_y) { *doc_point_x = (double) (view_point->x - page_area->x) / view->scale; *doc_point_y = (double) (view_point->y - page_area->y) / view->scale; } static void view_rect_to_doc_rect (EvView *view, GdkRectangle *view_rect, GdkRectangle *page_area, EvRectangle *doc_rect) { doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale; doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale; doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale; doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale; } static void doc_point_to_view_point (EvView *view, int page, EvPoint *doc_point, GdkPoint *view_point) { GdkRectangle page_area; GtkBorder border; double x, y, view_x, view_y; gdouble width, height; get_doc_page_size (view, page, &width, &height); if (view->rotation == 0) { x = doc_point->x; y = doc_point->y; } else if (view->rotation == 90) { x = width - doc_point->y; y = doc_point->x; } else if (view->rotation == 180) { x = width - doc_point->x; y = height - doc_point->y; } else if (view->rotation == 270) { x = doc_point->y; y = height - doc_point->x; } else { g_assert_not_reached (); } get_page_extents (view, page, &page_area, &border); view_x = CLAMP (x * view->scale, 0, page_area.width); view_y = CLAMP (y * view->scale, 0, page_area.height); view_point->x = view_x + page_area.x; view_point->y = view_y + page_area.y; } static void doc_rect_to_view_rect (EvView *view, int page, EvRectangle *doc_rect, GdkRectangle *view_rect) { GdkRectangle page_area; GtkBorder border; double x, y, w, h; gdouble width, height; get_doc_page_size (view, page, &width, &height); if (view->rotation == 0) { x = doc_rect->x1; y = doc_rect->y1; w = doc_rect->x2 - doc_rect->x1; h = doc_rect->y2 - doc_rect->y1; } else if (view->rotation == 90) { x = width - doc_rect->y2; y = doc_rect->x1; w = doc_rect->y2 - doc_rect->y1; h = doc_rect->x2 - doc_rect->x1; } else if (view->rotation == 180) { x = width - doc_rect->x2; y = height - doc_rect->y2; w = doc_rect->x2 - doc_rect->x1; h = doc_rect->y2 - doc_rect->y1; } else if (view->rotation == 270) { x = doc_rect->y1; y = height - doc_rect->x2; w = doc_rect->y2 - doc_rect->y1; h = doc_rect->x2 - doc_rect->x1; } else { g_assert_not_reached (); } get_page_extents (view, page, &page_area, &border); view_rect->x = x * view->scale + page_area.x; view_rect->y = y * view->scale + page_area.y; view_rect->width = w * view->scale; view_rect->height = h * view->scale; } static gboolean get_dual_even_left (EvView *view) { return (ev_document_get_n_pages (view->document) > 2); } static void find_page_at_location (EvView *view, gdouble x, gdouble y, gint *page, gint *x_offset, gint *y_offset) { int i; if (view->document == NULL) return; g_assert (page); g_assert (x_offset); g_assert (y_offset); for (i = view->start_page; i >= 0 && i <= view->end_page; i++) { GdkRectangle page_area; GtkBorder border; if (! get_page_extents (view, i, &page_area, &border)) continue; if ((x >= page_area.x + border.left) && (x < page_area.x + page_area.width - border.right) && (y >= page_area.y + border.top) && (y < page_area.y + page_area.height - border.bottom)) { *page = i; *x_offset = x - (page_area.x + border.left); *y_offset = y - (page_area.y + border.top); return; } } *page = -1; } static gboolean location_in_text (EvView *view, gdouble x, gdouble y) { GdkRegion *region; gint page = -1; gint x_offset = 0, y_offset = 0; find_page_at_location (view, x, y, &page, &x_offset, &y_offset); if (page == -1) return FALSE; region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page); if (region) return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale); else return FALSE; } static int ev_view_get_width (EvView *view) { return GTK_WIDGET (view)->allocation.width; } static int ev_view_get_height (EvView *view) { return GTK_WIDGET (view)->allocation.height; } static gboolean location_in_selected_text (EvView *view, gdouble x, gdouble y) { gint page = -1; gint x_offset = 0, y_offset = 0; EvViewSelection *selection; GList *l = NULL; for (l = view->selection_info.selections; l != NULL; l = l->next) { selection = (EvViewSelection *)l->data; find_page_at_location (view, x, y, &page, &x_offset, &y_offset); if (page != selection->page) continue; if (selection->covered_region && gdk_region_point_in (selection->covered_region, x_offset, y_offset)) return TRUE; } return FALSE; } static gboolean get_doc_point_from_offset (EvView *view, gint page, gint x_offset, gint y_offset, gint *x_new, gint *y_new) { gdouble width, height; double x, y; get_doc_page_size (view, page, &width, &height); x_offset = x_offset / view->scale; y_offset = y_offset / view->scale; if (view->rotation == 0) { x = x_offset; y = y_offset; } else if (view->rotation == 90) { x = y_offset; y = width - x_offset; } else if (view->rotation == 180) { x = width - x_offset; y = height - y_offset; } else if (view->rotation == 270) { x = height - y_offset; y = x_offset; } else { g_assert_not_reached (); } *x_new = x; *y_new = y; return TRUE; } static gboolean get_doc_point_from_location (EvView *view, gdouble x, gdouble y, gint *page, gint *x_new, gint *y_new) { gint x_offset = 0, y_offset = 0; x += view->scroll_x; y += view->scroll_y; find_page_at_location (view, x, y, page, &x_offset, &y_offset); if (*page == -1) return FALSE; return get_doc_point_from_offset (view, *page, x_offset, y_offset, x_new, y_new); } static void ev_view_get_area_from_mapping (EvView *view, guint page, GList *mapping_list, gconstpointer data, GdkRectangle *area) { EvMapping *mapping; mapping = ev_mapping_list_find (mapping_list, data); doc_rect_to_view_rect (view, page, &mapping->area, area); area->x -= view->scroll_x; area->y -= view->scroll_y; } /*** Hyperref ***/ static EvLink * ev_view_get_link_at_location (EvView *view, gdouble x, gdouble y) { gint page = -1; gint x_new = 0, y_new = 0; GList *link_mapping; if (!EV_IS_DOCUMENT_LINKS (view->document)) return NULL; if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new)) return NULL; link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page); if (link_mapping) return ev_mapping_list_get_data (link_mapping, x_new, y_new); else return NULL; } static void goto_fitr_dest (EvView *view, EvLinkDest *dest) { EvPoint doc_point; gdouble zoom, left, top; gboolean change_left, change_top; left = ev_link_dest_get_left (dest, &change_left); top = ev_link_dest_get_top (dest, &change_top); zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - left, ev_link_dest_get_bottom (dest) - top, ev_view_get_width (view), ev_view_get_height (view)); ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE); ev_document_model_set_scale (view->model, zoom); doc_point.x = change_left ? left : 0; doc_point.y = change_top ? top : 0; view->pending_point = doc_point; ev_view_change_page (view, ev_link_dest_get_page (dest), TRUE); } static void goto_fitv_dest (EvView *view, EvLinkDest *dest) { EvPoint doc_point; gdouble doc_width, doc_height; gint page; double zoom, left; gboolean change_left; page = ev_link_dest_get_page (dest); ev_document_get_page_size (view->document, page, &doc_width, &doc_height); left = ev_link_dest_get_left (dest, &change_left); doc_point.x = change_left ? left : 0; doc_point.y = 0; zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height, ev_view_get_width (view), ev_view_get_height (view)); ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE); ev_document_model_set_scale (view->model, zoom); view->pending_point = doc_point; ev_view_change_page (view, page, TRUE); } static void goto_fith_dest (EvView *view, EvLinkDest *dest) { EvPoint doc_point; gdouble doc_width, doc_height; gint page; gdouble zoom, top; gboolean change_top; page = ev_link_dest_get_page (dest); ev_document_get_page_size (view->document, page, &doc_width, &doc_height); top = ev_link_dest_get_top (dest, &change_top); doc_point.x = 0; doc_point.y = change_top ? top : 0; zoom = zoom_for_size_fit_width (doc_width, top, ev_view_get_width (view), ev_view_get_height (view)); ev_document_model_set_sizing_mode (view->model, EV_SIZING_FIT_WIDTH); ev_document_model_set_scale (view->model, zoom); view->pending_point = doc_point; ev_view_change_page (view, page, TRUE); } static void goto_fit_dest (EvView *view, EvLinkDest *dest) { double zoom; gdouble doc_width, doc_height; int page; page = ev_link_dest_get_page (dest); ev_document_get_page_size (view->document, page, &doc_width, &doc_height); zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view), ev_view_get_height (view)); ev_document_model_set_sizing_mode (view->model, EV_SIZING_BEST_FIT); ev_document_model_set_scale (view->model, zoom); ev_view_change_page (view, page, TRUE); } static void goto_xyz_dest (EvView *view, EvLinkDest *dest) { EvPoint doc_point; gint page; gdouble zoom, left, top; gboolean change_zoom, change_left, change_top; zoom = ev_link_dest_get_zoom (dest, &change_zoom); page = ev_link_dest_get_page (dest); if (change_zoom && zoom > 1) { ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE); ev_document_model_set_scale (view->model, zoom); } left = ev_link_dest_get_left (dest, &change_left); top = ev_link_dest_get_top (dest, &change_top); doc_point.x = change_left ? left : 0; doc_point.y = change_top ? top : 0; view->pending_point = doc_point; ev_view_change_page (view, page, TRUE); } static void goto_dest (EvView *view, EvLinkDest *dest) { EvLinkDestType type; int page, n_pages, current_page; page = ev_link_dest_get_page (dest); n_pages = ev_document_get_n_pages (view->document); if (page < 0 || page >= n_pages) return; current_page = view->current_page; type = ev_link_dest_get_dest_type (dest); switch (type) { case EV_LINK_DEST_TYPE_PAGE: ev_document_model_set_page (view->model, page); break; case EV_LINK_DEST_TYPE_FIT: goto_fit_dest (view, dest); break; case EV_LINK_DEST_TYPE_FITH: goto_fith_dest (view, dest); break; case EV_LINK_DEST_TYPE_FITV: goto_fitv_dest (view, dest); break; case EV_LINK_DEST_TYPE_FITR: goto_fitr_dest (view, dest); break; case EV_LINK_DEST_TYPE_XYZ: goto_xyz_dest (view, dest); break; case EV_LINK_DEST_TYPE_PAGE_LABEL: ev_document_model_set_page_by_label (view->model, ev_link_dest_get_page_label (dest)); break; default: g_assert_not_reached (); } if (current_page != view->current_page) ev_document_model_set_page (view->model, view->current_page); } static void ev_view_goto_dest (EvView *view, EvLinkDest *dest) { EvLinkDestType type; type = ev_link_dest_get_dest_type (dest); if (type == EV_LINK_DEST_TYPE_NAMED) { EvLinkDest *dest2; const gchar *named_dest; named_dest = ev_link_dest_get_named_dest (dest); dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document), named_dest); if (dest2) { goto_dest (view, dest2); g_object_unref (dest2); } return; } goto_dest (view, dest); } void ev_view_handle_link (EvView *view, EvLink *link) { EvLinkAction *action = NULL; EvLinkActionType type; action = ev_link_get_action (link); if (!action) return; type = ev_link_action_get_action_type (action); switch (type) { case EV_LINK_ACTION_TYPE_GOTO_DEST: { EvLinkDest *dest; g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link); dest = ev_link_action_get_dest (action); ev_view_goto_dest (view, dest); } break; case EV_LINK_ACTION_TYPE_GOTO_REMOTE: case EV_LINK_ACTION_TYPE_EXTERNAL_URI: case EV_LINK_ACTION_TYPE_LAUNCH: case EV_LINK_ACTION_TYPE_NAMED: g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action); break; } } gchar * ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest) { EvLinkDestType type; gchar *msg = NULL; type = ev_link_dest_get_dest_type (dest); switch (type) { case EV_LINK_DEST_TYPE_NAMED: { EvLinkDest *dest2; const gchar *named_dest; named_dest = ev_link_dest_get_named_dest (dest); dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document), named_dest); if (dest2) { msg = ev_document_get_page_label (view->document, ev_link_dest_get_page (dest2)); g_object_unref (dest2); } } break; case EV_LINK_DEST_TYPE_PAGE_LABEL: { msg = g_strdup (ev_link_dest_get_page_label (dest)); } break; default: msg = ev_document_get_page_label (view->document, ev_link_dest_get_page (dest)); } return msg; } static char * tip_from_action_named (EvLinkAction *action) { const gchar *name = ev_link_action_get_name (action); if (g_ascii_strcasecmp (name, "FirstPage") == 0) { return g_strdup (_("Go to first page")); } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) { return g_strdup (_("Go to previous page")); } else if (g_ascii_strcasecmp (name, "NextPage") == 0) { return g_strdup (_("Go to next page")); } else if (g_ascii_strcasecmp (name, "LastPage") == 0) { return g_strdup (_("Go to last page")); } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) { return g_strdup (_("Go to page")); } else if (g_ascii_strcasecmp (name, "Find") == 0) { return g_strdup (_("Find")); } return NULL; } static char * tip_from_link (EvView *view, EvLink *link) { EvLinkAction *action; EvLinkActionType type; char *msg = NULL; char *page_label; const char *title; action = ev_link_get_action (link); title = ev_link_get_title (link); if (!action) return title ? g_strdup (title) : NULL; type = ev_link_action_get_action_type (action); switch (type) { case EV_LINK_ACTION_TYPE_GOTO_DEST: page_label = ev_view_page_label_from_dest (view, ev_link_action_get_dest (action)); if (page_label) { msg = g_strdup_printf (_("Go to page %s"), page_label); g_free (page_label); } break; case EV_LINK_ACTION_TYPE_GOTO_REMOTE: if (title) { msg = g_strdup_printf (_("Go to %s on file “%s”"), title, ev_link_action_get_filename (action)); } else { msg = g_strdup_printf (_("Go to file “%s”"), ev_link_action_get_filename (action)); } break; case EV_LINK_ACTION_TYPE_EXTERNAL_URI: msg = g_strdup (ev_link_action_get_uri (action)); break; case EV_LINK_ACTION_TYPE_LAUNCH: msg = g_strdup_printf (_("Launch %s"), ev_link_action_get_filename (action)); break; case EV_LINK_ACTION_TYPE_NAMED: msg = tip_from_action_named (action); break; default: if (title) msg = g_strdup (title); break; } return msg; } static void ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y) { EvLink *link; EvFormField *field; EvAnnotation *annot = NULL; if (view->cursor == EV_VIEW_CURSOR_HIDDEN) return; if (view->drag_info.in_drag) { if (view->cursor != EV_VIEW_CURSOR_DRAG) ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG); return; } if (view->scroll_info.autoscrolling) { if (view->cursor != EV_VIEW_CURSOR_AUTOSCROLL) ev_view_set_cursor (view, EV_VIEW_CURSOR_AUTOSCROLL); return; } link = ev_view_get_link_at_location (view, x, y); if (link) { ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK); } else if ((field = ev_view_get_form_field_at_location (view, x, y))) { if (field->is_read_only) { if (view->cursor == EV_VIEW_CURSOR_LINK || view->cursor == EV_VIEW_CURSOR_IBEAM || view->cursor == EV_VIEW_CURSOR_DRAG) ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); } else if (EV_IS_FORM_FIELD_TEXT (field)) { ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM); } else { ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK); } } else if ((annot = ev_view_get_annotation_at_location (view, x, y))) { ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK); } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) { ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM); } else { if (view->cursor == EV_VIEW_CURSOR_LINK || view->cursor == EV_VIEW_CURSOR_IBEAM || view->cursor == EV_VIEW_CURSOR_DRAG || view->cursor == EV_VIEW_CURSOR_AUTOSCROLL) ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); } if (link || annot) g_object_set (view, "has-tooltip", TRUE, NULL); } /*** Images ***/ static EvImage * ev_view_get_image_at_location (EvView *view, gdouble x, gdouble y) { gint page = -1; gint x_new = 0, y_new = 0; GList *image_mapping; if (!EV_IS_DOCUMENT_IMAGES (view->document)) return NULL; if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new)) return NULL; image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page); if (image_mapping) return ev_mapping_list_get_data (image_mapping, x_new, y_new); else return NULL; } /*** Forms ***/ static EvFormField * ev_view_get_form_field_at_location (EvView *view, gdouble x, gdouble y) { gint page = -1; gint x_new = 0, y_new = 0; GList *forms_mapping; if (!EV_IS_DOCUMENT_FORMS (view->document)) return NULL; if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new)) return NULL; forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, page); if (forms_mapping) return ev_mapping_list_get_data (forms_mapping, x_new, y_new); else return NULL; } static GdkRegion * ev_view_form_field_get_region (EvView *view, EvFormField *field) { GdkRectangle view_area; GList *forms_mapping; forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page->index); ev_view_get_area_from_mapping (view, field->page->index, forms_mapping, field, &view_area); return gdk_region_rectangle (&view_area); } static gboolean ev_view_forms_remove_widgets (EvView *view) { ev_view_remove_all (view); return FALSE; } static void ev_view_form_field_destroy (GtkWidget *widget, EvView *view) { g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view); } static GtkWidget * ev_view_form_field_button_create_widget (EvView *view, EvFormField *field) { EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field); GdkRegion *field_region = NULL; switch (field_button->type) { case EV_FORM_FIELD_BUTTON_PUSH: return NULL; case EV_FORM_FIELD_BUTTON_CHECK: case EV_FORM_FIELD_BUTTON_RADIO: { gboolean state; GList *forms_mapping, *l; state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document), field); /* FIXME: it actually depends on NoToggleToOff flags */ if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO && state && field_button->state) return NULL; field_region = ev_view_form_field_get_region (view, field); /* For radio buttons and checkbox buttons that are in a set * we need to update also the region for the current selected item */ forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page->index); for (l = forms_mapping; l; l = g_list_next (l)) { EvFormField *button = ((EvMapping *)(l->data))->data; GdkRegion *button_region; if (button->id == field->id) continue; /* FIXME: only buttons in the same group should be updated */ if (!EV_IS_FORM_FIELD_BUTTON (button) || EV_FORM_FIELD_BUTTON (button)->type != field_button->type || EV_FORM_FIELD_BUTTON (button)->state != TRUE) continue; button_region = ev_view_form_field_get_region (view, button); gdk_region_union (field_region, button_region); gdk_region_destroy (button_region); } ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document), field, !state); field_button->state = !state; } break; } ev_view_reload_page (view, field->page->index, field_region); gdk_region_destroy (field_region); return NULL; } static void ev_view_form_field_text_save (EvView *view, GtkWidget *widget) { EvFormField *field; if (!view->document) return; field = g_object_get_data (G_OBJECT (widget), "form-field"); if (field->changed) { EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field); GdkRegion *field_region; field_region = ev_view_form_field_get_region (view, field); ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document), field, field_text->text); field->changed = FALSE; ev_view_reload_page (view, field->page->index, field_region); gdk_region_destroy (field_region); } } static void ev_view_form_field_text_changed (GtkWidget *widget, EvFormField *field) { EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field); gchar *text = NULL; if (GTK_IS_ENTRY (widget)) { text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget))); } else if (GTK_IS_TEXT_BUFFER (widget)) { GtkTextIter start, end; gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end); text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget), &start, &end, FALSE); } if (!field_text->text || (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) { g_free (field_text->text); field_text->text = text; field->changed = TRUE; } } static GtkWidget * ev_view_form_field_text_create_widget (EvView *view, EvFormField *field) { EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field); GtkWidget *text = NULL; gchar *txt; txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document), field); switch (field_text->type) { case EV_FORM_FIELD_TEXT_FILE_SELECT: /* TODO */ case EV_FORM_FIELD_TEXT_NORMAL: text = gtk_entry_new (); gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE); gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len); gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password); if (txt) { gtk_entry_set_text (GTK_ENTRY (text), txt); g_free (txt); } g_signal_connect (text, "changed", G_CALLBACK (ev_view_form_field_text_changed), field); g_signal_connect_after (text, "activate", G_CALLBACK (ev_view_form_field_destroy), view); break; case EV_FORM_FIELD_TEXT_MULTILINE: { GtkTextBuffer *buffer; text = gtk_text_view_new (); buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text)); if (txt) { gtk_text_buffer_set_text (buffer, txt, -1); g_free (txt); } g_signal_connect (buffer, "changed", G_CALLBACK (ev_view_form_field_text_changed), field); } break; } g_object_weak_ref (G_OBJECT (text), (GWeakNotify)ev_view_form_field_text_save, view); return text; } static void ev_view_form_field_choice_save (EvView *view, GtkWidget *widget) { EvFormField *field; if (!view->document) return; field = g_object_get_data (G_OBJECT (widget), "form-field"); if (field->changed) { GList *l; EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field); GdkRegion *field_region; field_region = ev_view_form_field_get_region (view, field); if (field_choice->is_editable) { ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document), field, field_choice->text); } else { ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field); for (l = field_choice->selected_items; l; l = g_list_next (l)) { ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document), field, GPOINTER_TO_INT (l->data)); } } field->changed = FALSE; ev_view_reload_page (view, field->page->index, field_region); gdk_region_destroy (field_region); } } static void ev_view_form_field_choice_changed (GtkWidget *widget, EvFormField *field) { EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field); if (GTK_IS_COMBO_BOX (widget)) { gint item; item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget)); if (!field_choice->selected_items || GPOINTER_TO_INT (field_choice->selected_items->data) != item) { g_list_free (field_choice->selected_items); field_choice->selected_items = NULL; field_choice->selected_items = g_list_prepend (field_choice->selected_items, GINT_TO_POINTER (item)); field->changed = TRUE; } if (GTK_IS_COMBO_BOX_ENTRY (widget)) { gchar *text; text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget)); if (!field_choice->text || (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) { g_free (field_choice->text); field_choice->text = text; field->changed = TRUE; } } } else if (GTK_IS_TREE_SELECTION (widget)) { GtkTreeSelection *selection = GTK_TREE_SELECTION (widget); GtkTreeModel *model; GList *items, *l; items = gtk_tree_selection_get_selected_rows (selection, &model); g_list_free (field_choice->selected_items); field_choice->selected_items = NULL; for (l = items; l && l->data; l = g_list_next (l)) { GtkTreeIter iter; GtkTreePath *path = (GtkTreePath *)l->data; gint item; gtk_tree_model_get_iter (model, &iter, path); gtk_tree_model_get (model, &iter, 1, &item, -1); field_choice->selected_items = g_list_prepend (field_choice->selected_items, GINT_TO_POINTER (item)); gtk_tree_path_free (path); } g_list_free (items); field->changed = TRUE; } } static GtkWidget * ev_view_form_field_choice_create_widget (EvView *view, EvFormField *field) { EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field); GtkWidget *choice; GtkTreeModel *model; gint n_items, i; gint selected_item = 0; n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document), field); model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT)); for (i = 0; i < n_items; i++) { GtkTreeIter iter; gchar *item; item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document), field, i); if (ev_document_forms_form_field_choice_is_item_selected ( EV_DOCUMENT_FORMS (view->document), field, i)) { selected_item = i; /* FIXME: we need a get_selected_items function in poppler */ field_choice->selected_items = g_list_prepend (field_choice->selected_items, GINT_TO_POINTER (i)); } if (item) { gtk_list_store_append (GTK_LIST_STORE (model), &iter); gtk_list_store_set (GTK_LIST_STORE (model), &iter, 0, item, 1, i, -1); g_free (item); } } if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) { GtkCellRenderer *renderer; GtkWidget *tree_view; GtkTreeSelection *selection; tree_view = gtk_tree_view_new_with_model (model); gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE); selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view)); if (field_choice->multi_select) { gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE); } /* TODO: set selected items */ renderer = gtk_cell_renderer_text_new (); gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view), 0, "choix", renderer, "text", 0, NULL); choice = gtk_scrolled_window_new (NULL, NULL); gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); gtk_container_add (GTK_CONTAINER (choice), tree_view); gtk_widget_show (tree_view); g_signal_connect (selection, "changed", G_CALLBACK (ev_view_form_field_choice_changed), field); g_signal_connect_after (selection, "changed", G_CALLBACK (ev_view_form_field_destroy), view); } else if (field_choice->is_editable) { /* ComboBoxEntry */ gchar *text; choice = gtk_combo_box_entry_new_with_model (model, 0); text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field); if (text) { gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text); g_free (text); } g_signal_connect (choice, "changed", G_CALLBACK (ev_view_form_field_choice_changed), field); g_signal_connect_after (GTK_BIN(choice)->child, "activate", G_CALLBACK (ev_view_form_field_destroy), view); } else { /* ComboBoxText */ GtkCellRenderer *renderer; choice = gtk_combo_box_new_with_model (model); renderer = gtk_cell_renderer_text_new (); gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice), renderer, TRUE); gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice), renderer, "text", 0, NULL); gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item); gtk_combo_box_popup (GTK_COMBO_BOX (choice)); g_signal_connect (choice, "changed", G_CALLBACK (ev_view_form_field_choice_changed), field); g_signal_connect_after (choice, "changed", G_CALLBACK (ev_view_form_field_destroy), view); } g_object_unref (model); g_object_weak_ref (G_OBJECT (choice), (GWeakNotify)ev_view_form_field_choice_save, view); return choice; } static void ev_view_handle_form_field (EvView *view, EvFormField *field, gdouble x, gdouble y) { GtkWidget *field_widget = NULL; GList *form_field_mapping; GdkRectangle view_area; if (field->is_read_only) return; if (EV_IS_FORM_FIELD_BUTTON (field)) { field_widget = ev_view_form_field_button_create_widget (view, field); } else if (EV_IS_FORM_FIELD_TEXT (field)) { field_widget = ev_view_form_field_text_create_widget (view, field); } else if (EV_IS_FORM_FIELD_CHOICE (field)) { field_widget = ev_view_form_field_choice_create_widget (view, field); } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) { /* TODO */ } /* Form field doesn't require a widget */ if (!field_widget) return; g_object_set_data_full (G_OBJECT (field_widget), "form-field", g_object_ref (field), (GDestroyNotify)g_object_unref); form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page->index); ev_view_get_area_from_mapping (view, field->page->index, form_field_mapping, field, &view_area); gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y); gtk_widget_show (field_widget); gtk_widget_grab_focus (field_widget); } /* Annotations */ static EvViewWindowChild * ev_view_get_window_child (EvView *view, GtkWidget *window) { GList *children = view->window_children; while (children) { EvViewWindowChild *child; child = (EvViewWindowChild *)children->data; children = children->next; if (child->window == window) return child; } return NULL; } static void ev_view_window_child_move (EvView *view, EvViewWindowChild *child, gint x, gint y) { child->x = x; child->y = y; gtk_window_move (GTK_WINDOW (child->window), MAX (child->parent_x, x), MAX (child->parent_y, y)); } static void ev_view_window_child_move_with_parent (EvView *view, GtkWidget *window) { EvViewWindowChild *child; gint root_x, root_y; child = ev_view_get_window_child (view, window); gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)), &root_x, &root_y); if (root_x != child->parent_x || root_y != child->parent_y) { gint dest_x, dest_y; dest_x = child->x + (root_x - child->parent_x); dest_y = child->y + (root_y - child->parent_y); child->parent_x = root_x; child->parent_y = root_y; ev_view_window_child_move (view, child, dest_x, dest_y); } if (child->visible && !GTK_WIDGET_VISIBLE (window)) gtk_widget_show (window); } static void ev_view_window_child_put (EvView *view, GtkWidget *window, guint page, gint x, gint y, gdouble orig_x, gdouble orig_y) { EvViewWindowChild *child; gint root_x, root_y; gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)), &root_x, &root_y); child = g_new0 (EvViewWindowChild, 1); child->window = window; child->page = page; child->orig_x = orig_x; child->orig_y = orig_y; child->parent_x = root_x; child->parent_y = root_y; child->visible = ev_annotation_window_is_open (EV_ANNOTATION_WINDOW (window)); ev_view_window_child_move (view, child, x + root_x, y + root_y); if (child->visible) gtk_widget_show (window); else gtk_widget_hide (window); view->window_children = g_list_append (view->window_children, child); } static EvViewWindowChild * ev_view_find_window_child_for_annot (EvView *view, guint page, EvAnnotation *annot) { GList *children = view->window_children; while (children) { EvViewWindowChild *child; EvAnnotation *wannot; child = (EvViewWindowChild *)children->data; children = children->next; if (child->page != page) continue; wannot = ev_annotation_window_get_annotation (EV_ANNOTATION_WINDOW (child->window)); if (wannot == annot || strcmp (wannot->name, annot->name) == 0) return child; } return NULL; } static void ev_view_window_children_free (EvView *view) { GList *l; if (!view->window_children) return; for (l = view->window_children; l && l->data; l = g_list_next (l)) { EvViewWindowChild *child; child = (EvViewWindowChild *)l->data; gtk_widget_destroy (GTK_WIDGET (child->window)); g_free (child); } g_list_free (view->window_children); view->window_children = NULL; view->window_child_focus = NULL; } static void annotation_window_grab_focus (GtkWidget *widget, EvView *view) { if (view->window_child_focus) ev_annotation_window_ungrab_focus (EV_ANNOTATION_WINDOW (view->window_child_focus->window)); view->window_child_focus = ev_view_get_window_child (view, widget); } static void annotation_window_closed (EvAnnotationWindow *window, EvView *view) { EvViewWindowChild *child; child = ev_view_get_window_child (view, GTK_WIDGET (window)); child->visible = FALSE; } static void annotation_window_moved (EvAnnotationWindow *window, gint x, gint y, EvView *view) { EvViewWindowChild *child; GdkRectangle page_area; GtkBorder border; GdkRectangle view_rect; EvRectangle doc_rect; gint width, height; child = ev_view_get_window_child (view, GTK_WIDGET (window)); if (child->x == x && child->y == y) return; child->moved = TRUE; child->x = x; child->y = y; /* Window has been moved by the user, * we have to set a new origin in doc coords */ gtk_window_get_size (GTK_WINDOW (window), &width, &height); view_rect.x = (x - child->parent_x) + view->scroll_x; view_rect.y = (y - child->parent_y) + view->scroll_y; view_rect.width = width; view_rect.height = height; get_page_extents (view, child->page, &page_area, &border); view_rect_to_doc_rect (view, &view_rect, &page_area, &doc_rect); child->orig_x = doc_rect.x1; child->orig_y = doc_rect.y1; } static void ev_view_annotation_save (EvView *view, EvAnnotation *annot) { if (!view->document) return; if (!annot->changed) return; ev_document_annotations_annotation_set_contents (EV_DOCUMENT_ANNOTATIONS (view->document), annot, annot->contents); annot->changed = FALSE; } static void show_annotation_windows (EvView *view, gint page) { GList *annots, *l; GtkWindow *parent; parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view))); annots = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page); for (l = annots; l && l->data; l = g_list_next (l)) { EvAnnotation *annot; EvViewWindowChild *child; GtkWidget *window; EvRectangle *doc_rect; GdkRectangle view_rect; annot = ((EvMapping *)(l->data))->data; if (!EV_IS_ANNOTATION_MARKUP (annot)) continue; if (!ev_annotation_markup_has_popup (EV_ANNOTATION_MARKUP (annot))) continue; window = g_object_get_data (G_OBJECT (annot), "popup"); if (window) { ev_view_window_child_move_with_parent (view, window); continue; } /* Look if we already have a popup for this annot */ child = ev_view_find_window_child_for_annot (view, page, annot); window = child ? child->window : NULL; if (window) { ev_annotation_window_set_annotation (EV_ANNOTATION_WINDOW (window), annot); g_object_set_data (G_OBJECT (annot), "popup", window); ev_view_window_child_move_with_parent (view, window); } else { window = ev_annotation_window_new (annot, parent); g_signal_connect (window, "grab_focus", G_CALLBACK (annotation_window_grab_focus), view); g_signal_connect (window, "closed", G_CALLBACK (annotation_window_closed), view); g_signal_connect (window, "moved", G_CALLBACK (annotation_window_moved), view); g_object_set_data (G_OBJECT (annot), "popup", window); doc_rect = (EvRectangle *)ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (window)); doc_rect_to_view_rect (view, page, doc_rect, &view_rect); view_rect.x -= view->scroll_x; view_rect.y -= view->scroll_y; ev_view_window_child_put (view, window, page, view_rect.x, view_rect.y, doc_rect->x1, doc_rect->y1); g_object_weak_ref (G_OBJECT (annot), (GWeakNotify)ev_view_annotation_save, view); } } } static void hide_annotation_windows (EvView *view, gint page) { GList *annots, *l; annots = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page); for (l = annots; l && l->data; l = g_list_next (l)) { EvAnnotation *annot; GtkWidget *window; annot = ((EvMapping *)(l->data))->data; if (!EV_IS_ANNOTATION_MARKUP (annot)) continue; window = g_object_get_data (G_OBJECT (annot), "popup"); if (window) gtk_widget_hide (window); } } static EvAnnotation * ev_view_get_annotation_at_location (EvView *view, gdouble x, gdouble y) { gint page = -1; gint x_new = 0, y_new = 0; GList *annotations_mapping; if (!EV_IS_DOCUMENT_ANNOTATIONS (view->document)) return NULL; if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new)) return NULL; annotations_mapping = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page); if (annotations_mapping) return ev_mapping_list_get_data (annotations_mapping, x_new, y_new); else return NULL; } static void ev_view_handle_annotation (EvView *view, EvAnnotation *annot, gdouble x, gdouble y) { if (EV_IS_ANNOTATION_MARKUP (annot)) { GtkWidget *window; window = g_object_get_data (G_OBJECT (annot), "popup"); if (window) { EvViewWindowChild *child; child = ev_view_get_window_child (view, window); if (!child->visible) { child->visible = TRUE; ev_view_window_child_move (view, child, child->x, child->y); gtk_widget_show (window); } } } } /*** GtkWidget implementation ***/ static void ev_view_size_request_continuous_dual_page (EvView *view, GtkRequisition *requisition) { int max_width; gint n_pages; GtkBorder border; ev_view_get_max_page_size (view, &max_width, NULL); compute_border (view, max_width, max_width, &border); n_pages = ev_document_get_n_pages (view->document) + 1; requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3); get_page_y_offset (view, n_pages, &requisition->height); if (view->sizing_mode == EV_SIZING_FIT_WIDTH) { requisition->width = 1; } else if (view->sizing_mode == EV_SIZING_BEST_FIT) { requisition->width = 1; /* FIXME: This could actually be set on one page docs or docs * with a strange aspect ratio. */ /* requisition->height = 1;*/ } } static void ev_view_size_request_continuous (EvView *view, GtkRequisition *requisition) { int max_width; int n_pages; GtkBorder border; ev_view_get_max_page_size (view, &max_width, NULL); n_pages = ev_document_get_n_pages (view->document); compute_border (view, max_width, max_width, &border); requisition->width = max_width + (view->spacing * 2) + border.left + border.right; get_page_y_offset (view, n_pages, &requisition->height); if (view->sizing_mode == EV_SIZING_FIT_WIDTH) { requisition->width = 1; } else if (view->sizing_mode == EV_SIZING_BEST_FIT) { requisition->width = 1; /* FIXME: This could actually be set on one page docs or docs * with a strange aspect ratio. */ /* requisition->height = 1;*/ } } static void ev_view_size_request_dual_page (EvView *view, GtkRequisition *requisition) { GtkBorder border; gint width, height; /* Find the largest of the two. */ ev_view_get_page_size (view, view->current_page, &width, &height); if (view->current_page + 1 < ev_document_get_n_pages (view->document)) { gint width_2, height_2; ev_view_get_page_size (view, view->current_page + 1, &width_2, &height_2); if (width_2 > width) { width = width_2; height = height_2; } } compute_border (view, width, height, &border); requisition->width = ((width + border.left + border.right) * 2) + (view->spacing * 3); requisition->height = (height + border.top + border.bottom) + (view->spacing * 2); if (view->sizing_mode == EV_SIZING_FIT_WIDTH) { requisition->width = 1; } else if (view->sizing_mode == EV_SIZING_BEST_FIT) { requisition->width = 1; requisition->height = 1; } } static void ev_view_size_request_single_page (EvView *view, GtkRequisition *requisition) { GtkBorder border; gint width, height; ev_view_get_page_size (view, view->current_page, &width, &height); compute_border (view, width, height, &border); requisition->width = width + border.left + border.right + (2 * view->spacing); requisition->height = height + border.top + border.bottom + (2 * view->spacing); if (view->sizing_mode == EV_SIZING_FIT_WIDTH) { requisition->width = 1; requisition->height = height + border.top + border.bottom + (2 * view->spacing); } else if (view->sizing_mode == EV_SIZING_BEST_FIT) { requisition->width = 1; requisition->height = 1; } } static void ev_view_size_request (GtkWidget *widget, GtkRequisition *requisition) { EvView *view = EV_VIEW (widget); if (view->document == NULL) { requisition->width = 1; requisition->height = 1; return; } if (view->presentation) { requisition->width = 1; requisition->height = 1; return; } if (view->continuous && view->dual_page) ev_view_size_request_continuous_dual_page (view, requisition); else if (view->continuous) ev_view_size_request_continuous (view, requisition); else if (view->dual_page) ev_view_size_request_dual_page (view, requisition); else ev_view_size_request_single_page (view, requisition); } static void ev_view_size_allocate (GtkWidget *widget, GtkAllocation *allocation) { EvView *view = EV_VIEW (widget); GList *children, *l; gint root_x, root_y; GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation); if (view->sizing_mode == EV_SIZING_FIT_WIDTH || view->sizing_mode == EV_SIZING_BEST_FIT) { ev_view_zoom_for_size (view, allocation->width, allocation->height); ev_view_size_request (widget, &widget->requisition); } view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL); view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL); if (view->document) view_update_range_and_current_page (view); view->pending_scroll = SCROLL_TO_KEEP_POSITION; view->pending_resize = FALSE; view->pending_point.x = 0; view->pending_point.y = 0; children = gtk_container_get_children (GTK_CONTAINER (widget)); for (l = children; l && l->data; l = g_list_next (l)) { EvFormField *field; GdkRectangle view_area; GList *form_field_mapping; GtkAllocation child_allocation; GtkRequisition child_requisition; GtkWidget *child = (GtkWidget *)l->data; field = g_object_get_data (G_OBJECT (child), "form-field"); if (!field) continue; form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page->index); ev_view_get_area_from_mapping (view, field->page->index, form_field_mapping, field, &view_area); gtk_widget_size_request (child, &child_requisition); if (child_requisition.width != view_area.width || child_requisition.height != view_area.height) gtk_widget_set_size_request (child, view_area.width, view_area.height); gtk_container_child_get (GTK_CONTAINER (widget), child, "x", &child_allocation.x, "y", &child_allocation.y, NULL); if (child_allocation.x != view_area.x || child_allocation.y != view_area.y) { gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y); } } g_list_free (children); if (view->window_children) gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)), &root_x, &root_y); for (l = view->window_children; l && l->data; l = g_list_next (l)) { EvViewWindowChild *child; EvRectangle doc_rect; GdkRectangle view_rect; child = (EvViewWindowChild *)l->data; doc_rect = *ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (child->window)); if (child->moved) { doc_rect.x1 = child->orig_x; doc_rect.y1 = child->orig_y; } doc_rect_to_view_rect (view, child->page, &doc_rect, &view_rect); view_rect.x -= view->scroll_x; view_rect.y -= view->scroll_y; if (view_rect.x != child->orig_x || view_rect.y != child->orig_y) { child->parent_x = root_x; child->parent_y = root_y; ev_view_window_child_move (view, child, view_rect.x + root_x, view_rect.y + root_y); } } } static void ev_view_realize (GtkWidget *widget) { EvView *view = EV_VIEW (widget); if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget); gdk_window_set_events (view->layout.bin_window, (gdk_window_get_events (view->layout.bin_window) | GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_SCROLL_MASK | GDK_KEY_PRESS_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK)); if (view->presentation) gdk_window_set_background (view->layout.bin_window, &widget->style->black); else gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]); on_adjustment_value_changed (NULL, view); } static gboolean ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event) { EvView *view = EV_VIEW (widget); guint state; state = event->state & gtk_accelerator_get_default_mod_mask (); if (state == GDK_CONTROL_MASK && view->presentation == FALSE) { ev_view_set_sizing_mode (view, EV_SIZING_FREE); if (event->direction == GDK_SCROLL_UP || event->direction == GDK_SCROLL_LEFT) { if (ev_view_can_zoom_in (view)) { ev_view_zoom_in (view); } } else { if (ev_view_can_zoom_out (view)) { ev_view_zoom_out (view); } } return TRUE; } view->jump_to_find_result = FALSE; /* Shift+Wheel scrolls the in the perpendicular direction */ if (state & GDK_SHIFT_MASK) { if (event->direction == GDK_SCROLL_UP) event->direction = GDK_SCROLL_LEFT; else if (event->direction == GDK_SCROLL_LEFT) event->direction = GDK_SCROLL_UP; else if (event->direction == GDK_SCROLL_DOWN) event->direction = GDK_SCROLL_RIGHT; else if (event->direction == GDK_SCROLL_RIGHT) event->direction = GDK_SCROLL_DOWN; event->state &= ~GDK_SHIFT_MASK; state &= ~GDK_SHIFT_MASK; } if (state == 0 && (view->presentation || (view->sizing_mode == EV_SIZING_BEST_FIT && !view->continuous))) { switch (event->direction) { case GDK_SCROLL_DOWN: case GDK_SCROLL_RIGHT: ev_view_next_page (view); break; case GDK_SCROLL_UP: case GDK_SCROLL_LEFT: ev_view_previous_page (view); break; } return TRUE; } return FALSE; } static EvViewSelection * find_selection_for_page (EvView *view, gint page) { GList *list; for (list = view->selection_info.selections; list != NULL; list = list->next) { EvViewSelection *selection; selection = (EvViewSelection *) list->data; if (selection->page == page) return selection; } return NULL; } static void draw_end_presentation_page (EvView *view, GdkRectangle *page_area) { PangoLayout *layout; PangoFontDescription *font_desc; gchar *markup; const gchar *text = _("End of presentation. Press Escape to exit."); if (view->presentation_state != EV_PRESENTATION_END) return; layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL); markup = g_strdup_printf ("%s", text); pango_layout_set_markup (layout, markup, -1); g_free (markup); font_desc = pango_font_description_new (); pango_font_description_set_size (font_desc, 16 * PANGO_SCALE); pango_layout_set_font_description (layout, font_desc); gtk_paint_layout (GTK_WIDGET (view)->style, view->layout.bin_window, GTK_WIDGET_STATE (view), FALSE, page_area, GTK_WIDGET (view), NULL, page_area->x + 15, page_area->y + 15, layout); pango_font_description_free (font_desc); g_object_unref (layout); } static gboolean ev_view_expose_event (GtkWidget *widget, GdkEventExpose *event) { EvView *view = EV_VIEW (widget); cairo_t *cr; gint i; if (view->animation) { if (ev_transition_animation_ready (view->animation)) { GdkRectangle page_area; GtkBorder border; if (get_page_extents (view, view->current_page, &page_area, &border)) { cr = gdk_cairo_create (view->layout.bin_window); /* normalize to x=0, y=0 */ cairo_translate (cr, page_area.x, page_area.y); page_area.x = page_area.y = 0; ev_transition_animation_paint (view->animation, cr, page_area); cairo_destroy (cr); } } return TRUE; } if (view->presentation) { switch (view->presentation_state) { case EV_PRESENTATION_END: { GdkRectangle area = {0}; area.width = widget->allocation.width; area.height = widget->allocation.height; draw_end_presentation_page (view, &area); } return FALSE; case EV_PRESENTATION_BLACK: case EV_PRESENTATION_WHITE: return FALSE; case EV_PRESENTATION_NORMAL: default: break; } } else if (view->loading) { GdkRectangle area = {0}; area.width = widget->allocation.width; area.height = widget->allocation.height; draw_loading_text (view, &area, &(event->area)); } if (view->document == NULL) return FALSE; cr = gdk_cairo_create (view->layout.bin_window); for (i = view->start_page; i >= 0 && i <= view->end_page; i++) { GdkRectangle page_area; GtkBorder border; gboolean page_ready = TRUE; if (!get_page_extents (view, i, &page_area, &border)) continue; page_area.x -= view->scroll_x; page_area.y -= view->scroll_y; draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready); if (page_ready && view->find_pages && view->highlight_find_results) highlight_find_results (view, i); if (page_ready && EV_IS_DOCUMENT_ANNOTATIONS (view->document)) show_annotation_windows (view, i); } cairo_destroy (cr); if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event); return FALSE; } static gboolean ev_view_do_popup_menu (EvView *view, gdouble x, gdouble y) { EvLink *link; EvImage *image; image = ev_view_get_image_at_location (view, x, y); if (image) { g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image); return TRUE; } link = ev_view_get_link_at_location (view, x, y); if (link) { g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link); return TRUE; } g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL); return TRUE; } static gboolean ev_view_popup_menu (GtkWidget *widget) { gint x, y; gtk_widget_get_pointer (widget, &x, &y); return ev_view_do_popup_menu (EV_VIEW (widget), x, y); } static void get_link_area (EvView *view, gint x, gint y, EvLink *link, GdkRectangle *area) { GList *link_mapping; gint page; gint x_offset = 0, y_offset = 0; x += view->scroll_x; y += view->scroll_y; find_page_at_location (view, x, y, &page, &x_offset, &y_offset); link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page); ev_view_get_area_from_mapping (view, page, link_mapping, link, area); } static void get_annot_area (EvView *view, gint x, gint y, EvAnnotation *annot, GdkRectangle *area) { GList *annots_mapping; gint page; gint x_offset = 0, y_offset = 0; x += view->scroll_x; y += view->scroll_y; find_page_at_location (view, x, y, &page, &x_offset, &y_offset); annots_mapping = ev_pixbuf_cache_get_annots_mapping (view->pixbuf_cache, page); ev_view_get_area_from_mapping (view, page, annots_mapping, annot, area); } static gboolean ev_view_query_tooltip (GtkWidget *widget, gint x, gint y, gboolean keyboard_tip, GtkTooltip *tooltip) { EvView *view = EV_VIEW (widget); EvLink *link; EvAnnotation *annot; gchar *text; annot = ev_view_get_annotation_at_location (view, x, y); if (annot && annot->contents) { GdkRectangle annot_area; get_annot_area (view, x, y, annot, &annot_area); gtk_tooltip_set_text (tooltip, annot->contents); gtk_tooltip_set_tip_area (tooltip, &annot_area); return TRUE; } link = ev_view_get_link_at_location (view, x, y); if (!link) return FALSE; text = tip_from_link (view, link); if (text && g_utf8_validate (text, -1, NULL)) { GdkRectangle link_area; get_link_area (view, x, y, link, &link_area); gtk_tooltip_set_text (tooltip, text); gtk_tooltip_set_tip_area (tooltip, &link_area); } g_free (text); return TRUE; } static void start_selection_for_event (EvView *view, GdkEventButton *event) { clear_selection (view); view->selection_info.start.x = event->x + view->scroll_x; view->selection_info.start.y = event->y + view->scroll_y; switch (event->type) { case GDK_2BUTTON_PRESS: view->selection_info.style = EV_SELECTION_STYLE_WORD; break; case GDK_3BUTTON_PRESS: view->selection_info.style = EV_SELECTION_STYLE_LINE; break; default: view->selection_info.style = EV_SELECTION_STYLE_GLYPH; return; } /* In case of WORD or LINE, compute selections now */ compute_selections (view, view->selection_info.style, &(view->selection_info.start), &(view->selection_info.start)); } static gboolean ev_view_button_press_event (GtkWidget *widget, GdkEventButton *event) { EvView *view = EV_VIEW (widget); if (!view->document) return FALSE; if (!GTK_WIDGET_HAS_FOCUS (widget)) { gtk_widget_grab_focus (widget); } if (view->window_child_focus) { EvAnnotationWindow *window; EvAnnotation *annot; window = EV_ANNOTATION_WINDOW (view->window_child_focus->window); annot = ev_annotation_window_get_annotation (window); ev_annotation_window_ungrab_focus (window); ev_view_annotation_save (view, annot); view->window_child_focus = NULL; } view->pressed_button = event->button; view->selection_info.in_drag = FALSE; if (view->scroll_info.autoscrolling) return TRUE; switch (event->button) { case 1: { EvImage *image; EvAnnotation *annot; EvFormField *field; if (EV_IS_SELECTION (view->document) && view->selection_info.selections) { if (event->type == GDK_3BUTTON_PRESS) { start_selection_for_event (view, event); } else if (location_in_selected_text (view, event->x + view->scroll_x, event->y + view->scroll_y)) { view->selection_info.in_drag = TRUE; } else { start_selection_for_event (view, event); } gtk_widget_queue_draw (widget); } else if ((annot = ev_view_get_annotation_at_location (view, event->x, event->y))) { ev_view_handle_annotation (view, annot, event->x, event->y); } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) { ev_view_remove_all (view); ev_view_handle_form_field (view, field, event->x, event->y); } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) && (image = ev_view_get_image_at_location (view, event->x, event->y))) { if (view->image_dnd_info.image) g_object_unref (view->image_dnd_info.image); view->image_dnd_info.image = g_object_ref (image); view->image_dnd_info.in_drag = TRUE; view->image_dnd_info.start.x = event->x + view->scroll_x; view->image_dnd_info.start.y = event->y + view->scroll_y; } else { ev_view_remove_all (view); if (EV_IS_SELECTION (view->document)) start_selection_for_event (view, event); } } return TRUE; case 2: /* use root coordinates as reference point because * scrolling changes window relative coordinates */ view->drag_info.start.x = event->x_root; view->drag_info.start.y = event->y_root; view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment); view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment); ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG); return TRUE; case 3: view->scroll_info.start_y = event->y; return ev_view_do_popup_menu (view, event->x, event->y); } return FALSE; } static void ev_view_remove_all (EvView *view) { GList *children, *child; children = gtk_container_get_children (GTK_CONTAINER (view)); for (child = children; child && child->data; child = g_list_next (child)) { gtk_container_remove (GTK_CONTAINER (view), GTK_WIDGET (child->data)); } g_list_free (children); } /*** Drag and Drop ***/ static void ev_view_drag_data_get (GtkWidget *widget, GdkDragContext *context, GtkSelectionData *selection_data, guint info, guint time) { EvView *view = EV_VIEW (widget); switch (info) { case TARGET_DND_TEXT: if (EV_IS_SELECTION (view->document) && view->selection_info.selections) { gchar *text; text = get_selected_text (view); gtk_selection_data_set_text (selection_data, text, strlen (text)); g_free (text); } break; case TARGET_DND_IMAGE: if (view->image_dnd_info.image) { GdkPixbuf *pixbuf; ev_document_doc_mutex_lock (); pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document), view->image_dnd_info.image); ev_document_doc_mutex_unlock (); gtk_selection_data_set_pixbuf (selection_data, pixbuf); g_object_unref (pixbuf); } break; case TARGET_DND_URI: if (view->image_dnd_info.image) { GdkPixbuf *pixbuf; const gchar *tmp_uri; gchar *uris[2]; ev_document_doc_mutex_lock (); pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document), view->image_dnd_info.image); ev_document_doc_mutex_unlock (); tmp_uri = ev_image_save_tmp (view->image_dnd_info.image, pixbuf); g_object_unref (pixbuf); uris[0] = (gchar *)tmp_uri; uris[1] = NULL; gtk_selection_data_set_uris (selection_data, uris); } } } static gboolean ev_view_drag_motion (GtkWidget *widget, GdkDragContext *context, gint x, gint y, guint time) { if (gtk_drag_get_source_widget (context) == widget) gdk_drag_status (context, 0, time); else gdk_drag_status (context, context->suggested_action, time); return TRUE; } static gboolean selection_update_idle_cb (EvView *view) { compute_selections (view, view->selection_info.style, &view->selection_info.start, &view->motion); view->selection_update_id = 0; return FALSE; } static gboolean selection_scroll_timeout_cb (EvView *view) { gint x, y, shift = 0; GtkWidget *widget = GTK_WIDGET (view); gtk_widget_get_pointer (widget, &x, &y); if (y > widget->allocation.height) { shift = (y - widget->allocation.height) / 2; } else if (y < 0) { shift = y / 2; } if (shift) gtk_adjustment_set_value (view->vadjustment, CLAMP (view->vadjustment->value + shift, view->vadjustment->lower, view->vadjustment->upper - view->vadjustment->page_size)); if (x > widget->allocation.width) { shift = (x - widget->allocation.width) / 2; } else if (x < 0) { shift = x / 2; } if (shift) gtk_adjustment_set_value (view->hadjustment, CLAMP (view->hadjustment->value + shift, view->hadjustment->lower, view->hadjustment->upper - view->hadjustment->page_size)); return TRUE; } static gboolean ev_view_drag_update_momentum (EvView *view) { int i; if (!view->drag_info.in_drag) return FALSE; for (i = DRAG_HISTORY - 1; i > 0; i--) { view->drag_info.buffer[i].x = view->drag_info.buffer[i-1].x; view->drag_info.buffer[i].y = view->drag_info.buffer[i-1].y; } /* Momentum is a moving average of 10ms granularity over * the last 100ms with each 10ms stored in buffer. */ view->drag_info.momentum.x = (view->drag_info.buffer[DRAG_HISTORY - 1].x - view->drag_info.buffer[0].x); view->drag_info.momentum.y = (view->drag_info.buffer[DRAG_HISTORY - 1].y - view->drag_info.buffer[0].y); return TRUE; } static gboolean ev_view_scroll_drag_release (EvView *view) { gdouble dhadj_value, dvadj_value; gdouble oldhadjustment, oldvadjustment; view->drag_info.momentum.x /= 1.2; view->drag_info.momentum.y /= 1.2; /* Alter these constants to change "friction" */ dhadj_value = view->hadjustment->page_size * (gdouble)view->drag_info.momentum.x / GTK_WIDGET (view)->allocation.width; dvadj_value = view->vadjustment->page_size * (gdouble)view->drag_info.momentum.y / GTK_WIDGET (view)->allocation.height; oldhadjustment = gtk_adjustment_get_value (view->hadjustment); oldvadjustment = gtk_adjustment_get_value (view->vadjustment); /* When we reach the edges, we need either to absorb some momentum and bounce by * multiplying it on -0.5 or stop scrolling by setting momentum to 0. */ if (((oldhadjustment + dhadj_value) > (view->hadjustment->upper - view->hadjustment->page_size)) || ((oldhadjustment + dhadj_value) < 0)) view->drag_info.momentum.x = 0; if (((oldvadjustment + dvadj_value) > (view->vadjustment->upper - view->vadjustment->page_size)) || ((oldvadjustment + dvadj_value) < 0)) view->drag_info.momentum.y = 0; gtk_adjustment_set_value (view->hadjustment, MIN (oldhadjustment + dhadj_value, view->hadjustment->upper - view->hadjustment->page_size)); gtk_adjustment_set_value (view->vadjustment, MIN (oldvadjustment + dvadj_value, view->vadjustment->upper - view->vadjustment->page_size)); if (((view->drag_info.momentum.x < 1) && (view->drag_info.momentum.x > -1)) && ((view->drag_info.momentum.y < 1) && (view->drag_info.momentum.y > -1))) return FALSE; else return TRUE; } static gboolean ev_view_motion_notify_event (GtkWidget *widget, GdkEventMotion *event) { EvView *view = EV_VIEW (widget); gint x, y; if (!view->document) return FALSE; if (event->is_hint || event->window != view->layout.bin_window) { gtk_widget_get_pointer (widget, &x, &y); } else { x = event->x; y = event->y; } if (view->scroll_info.autoscrolling) { view->scroll_info.last_y = y; return TRUE; } if (view->selection_info.in_drag) { if (gtk_drag_check_threshold (widget, view->selection_info.start.x, view->selection_info.start.y, x, y)) { GtkTargetList *target_list = gtk_target_list_new (NULL, 0); gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT); gtk_drag_begin (widget, target_list, GDK_ACTION_COPY, 1, (GdkEvent *)event); view->selection_info.in_drag = FALSE; gtk_target_list_unref (target_list); return TRUE; } } else if (view->image_dnd_info.in_drag) { if (gtk_drag_check_threshold (widget, view->selection_info.start.x, view->selection_info.start.y, x, y)) { GtkTargetList *target_list = gtk_target_list_new (NULL, 0); gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI); gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE); gtk_drag_begin (widget, target_list, GDK_ACTION_COPY, 1, (GdkEvent *)event); view->image_dnd_info.in_drag = FALSE; gtk_target_list_unref (target_list); return TRUE; } } switch (view->pressed_button) { case 1: /* For the Evince 0.4.x release, we limit selection to un-rotated * documents only. */ if (view->rotation != 0) return FALSE; /* Schedule timeout to scroll during selection and additionally * scroll once to allow arbitrary speed. */ if (!view->selection_scroll_id) view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view); else selection_scroll_timeout_cb (view); view->selection_info.in_selection = TRUE; view->motion.x = x + view->scroll_x; view->motion.y = y + view->scroll_y; /* Queue an idle to handle the motion. We do this because * handling any selection events in the motion could be slower * than new motion events reach us. We always put it in the * idle to make sure we catch up and don't visibly lag the * mouse. */ if (!view->selection_update_id) view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view); return TRUE; case 2: if (!view->drag_info.in_drag) { gboolean start; int i; start = gtk_drag_check_threshold (widget, view->drag_info.start.x, view->drag_info.start.y, event->x_root, event->y_root); view->drag_info.in_drag = start; view->drag_info.drag_timeout_id = g_timeout_add (10, (GSourceFunc)ev_view_drag_update_momentum, view); /* Set 100 to choose how long it takes to build up momentum */ /* Clear out previous momentum info: */ for (i = 0; i < DRAG_HISTORY; i++) { view->drag_info.buffer[i].x = event->x; view->drag_info.buffer[i].y = event->y; } view->drag_info.momentum.x = 0; view->drag_info.momentum.y = 0; } if (view->drag_info.in_drag) { int dx, dy; gdouble dhadj_value, dvadj_value; view->drag_info.buffer[0].x = event->x; view->drag_info.buffer[0].y = event->y; dx = event->x_root - view->drag_info.start.x; dy = event->y_root - view->drag_info.start.y; dhadj_value = view->hadjustment->page_size * (gdouble)dx / widget->allocation.width; dvadj_value = view->vadjustment->page_size * (gdouble)dy / widget->allocation.height; /* clamp scrolling to visible area */ gtk_adjustment_set_value (view->hadjustment, MIN(view->drag_info.hadj - dhadj_value, view->hadjustment->upper - view->hadjustment->page_size)); gtk_adjustment_set_value (view->vadjustment, MIN(view->drag_info.vadj - dvadj_value, view->vadjustment->upper - view->vadjustment->page_size)); return TRUE; } break; default: ev_view_handle_cursor_over_xy (view, x, y); } return FALSE; } static gboolean ev_view_button_release_event (GtkWidget *widget, GdkEventButton *event) { EvView *view = EV_VIEW (widget); EvLink *link = NULL; view->image_dnd_info.in_drag = FALSE; if (view->scroll_info.autoscrolling) { ev_view_autoscroll_stop (view); view->pressed_button = -1; return TRUE; } if (view->drag_info.in_drag) { view->drag_info.release_timeout_id = g_timeout_add (20, (GSourceFunc)ev_view_scroll_drag_release, view); } if (view->document && !view->drag_info.in_drag && view->pressed_button != 3) { link = ev_view_get_link_at_location (view, event->x, event->y); } view->drag_info.in_drag = FALSE; if (view->pressed_button == 2) { ev_view_handle_cursor_over_xy (view, event->x, event->y); } view->pressed_button = -1; if (view->selection_scroll_id) { g_source_remove (view->selection_scroll_id); view->selection_scroll_id = 0; } if (view->selection_update_id) { g_source_remove (view->selection_update_id); view->selection_update_id = 0; } if (view->selection_info.selections) { clear_link_selected (view); ev_view_update_primary_selection (view); if (view->selection_info.in_drag) { clear_selection (view); gtk_widget_queue_draw (widget); } view->selection_info.in_drag = FALSE; } else if (link) { if (event->button == 2) { EvLinkAction *action; EvLinkActionType type; action = ev_link_get_action (link); if (!action) return FALSE; type = ev_link_action_get_action_type (action); if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) { g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action); } } else { ev_view_handle_link (view, link); } } else if (view->presentation) { switch (event->button) { case 1: ev_view_next_page (view); return TRUE; case 3: ev_view_previous_page (view); return TRUE; } } return FALSE; } /* Goto Window */ /* Cut and paste from gtkwindow.c */ static void send_focus_change (GtkWidget *widget, gboolean in) { GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE); g_object_ref (widget); if (in) GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS); else GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS); fevent->focus_change.type = GDK_FOCUS_CHANGE; fevent->focus_change.window = g_object_ref (widget->window); fevent->focus_change.in = in; gtk_widget_event (widget, fevent); g_object_notify (G_OBJECT (widget), "has-focus"); g_object_unref (widget); gdk_event_free (fevent); } static void ev_view_goto_window_hide (EvView *view) { /* send focus-in event */ send_focus_change (view->goto_entry, FALSE); gtk_widget_hide (view->goto_window); gtk_entry_set_text (GTK_ENTRY (view->goto_entry), ""); } static gboolean ev_view_goto_window_delete_event (GtkWidget *widget, GdkEventAny *event, EvView *view) { ev_view_goto_window_hide (view); return TRUE; } static gboolean key_is_numeric (guint keyval) { return ((keyval >= GDK_0 && keyval <= GDK_9) || (keyval >= GDK_KP_0 && keyval <= GDK_KP_9)); } static gboolean ev_view_goto_window_key_press_event (GtkWidget *widget, GdkEventKey *event, EvView *view) { switch (event->keyval) { case GDK_Escape: case GDK_Tab: case GDK_KP_Tab: case GDK_ISO_Left_Tab: ev_view_goto_window_hide (view); return TRUE; case GDK_Return: case GDK_KP_Enter: case GDK_ISO_Enter: case GDK_BackSpace: case GDK_Delete: return FALSE; default: if (!key_is_numeric (event->keyval)) return TRUE; } return FALSE; } static gboolean ev_view_goto_window_button_press_event (GtkWidget *widget, GdkEventButton *event, EvView *view) { ev_view_goto_window_hide (view); return TRUE; } static void ev_view_goto_entry_activate (GtkEntry *entry, EvView *view) { const gchar *text; gint page; text = gtk_entry_get_text (entry); page = atoi (text) - 1; ev_view_goto_window_hide (view); if (page >= 0 && page < ev_document_get_n_pages (view->document)) { ev_document_model_set_page (view->model, page); } } static void ev_view_goto_window_create (EvView *view) { GtkWidget *frame, *hbox, *toplevel, *label; toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view)); if (view->goto_window) { if (GTK_WINDOW (toplevel)->group) gtk_window_group_add_window (GTK_WINDOW (toplevel)->group, GTK_WINDOW (view->goto_window)); else if (GTK_WINDOW (view->goto_window)->group) gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group, GTK_WINDOW (view->goto_window)); return; } view->goto_window = gtk_window_new (GTK_WINDOW_POPUP); gtk_window_set_screen (GTK_WINDOW (view->goto_window), gtk_widget_get_screen (GTK_WIDGET (view))); if (GTK_WINDOW (toplevel)->group) gtk_window_group_add_window (GTK_WINDOW (toplevel)->group, GTK_WINDOW (view->goto_window)); gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE); g_signal_connect (view->goto_window, "delete_event", G_CALLBACK (ev_view_goto_window_delete_event), view); g_signal_connect (view->goto_window, "key_press_event", G_CALLBACK (ev_view_goto_window_key_press_event), view); g_signal_connect (view->goto_window, "button_press_event", G_CALLBACK (ev_view_goto_window_button_press_event), view); frame = gtk_frame_new (NULL); gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN); gtk_container_add (GTK_CONTAINER (view->goto_window), frame); gtk_widget_show (frame); hbox = gtk_hbox_new (FALSE, 0); gtk_container_set_border_width (GTK_CONTAINER (hbox), 3); gtk_container_add (GTK_CONTAINER (frame), hbox); gtk_widget_show (hbox); label = gtk_label_new(_("Jump to page:")); gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3); gtk_widget_show (label); gtk_widget_realize (label); view->goto_entry = gtk_entry_new (); g_signal_connect (view->goto_entry, "activate", G_CALLBACK (ev_view_goto_entry_activate), view); gtk_box_pack_start (GTK_BOX (hbox), view->goto_entry, TRUE, TRUE, 0); gtk_widget_show (view->goto_entry); gtk_widget_realize (view->goto_entry); } static void ev_view_goto_entry_grab_focus (EvView *view) { GtkWidgetClass *entry_parent_class; entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry)); (entry_parent_class->grab_focus) (view->goto_entry); send_focus_change (view->goto_entry, TRUE); } static void ev_view_goto_window_send_key_event (EvView *view, GdkEvent *event) { GdkEventKey *new_event; GdkScreen *screen; /* Move goto window off screen */ screen = gtk_widget_get_screen (GTK_WIDGET (view)); gtk_window_move (GTK_WINDOW (view->goto_window), gdk_screen_get_width (screen) + 1, gdk_screen_get_height (screen) + 1); gtk_widget_show (view->goto_window); new_event = (GdkEventKey *) gdk_event_copy (event); g_object_unref (new_event->window); new_event->window = g_object_ref (view->goto_window->window); gtk_widget_realize (view->goto_window); gtk_widget_event (view->goto_window, (GdkEvent *)new_event); gdk_event_free ((GdkEvent *)new_event); gtk_widget_hide (view->goto_window); } static gboolean ev_view_key_press_event (GtkWidget *widget, GdkEventKey *event) { EvView *view = EV_VIEW (widget); EvPresentationState current; if (!view->document) return FALSE; if (!GTK_WIDGET_HAS_FOCUS (widget)) { /* Forward key events to current focused window child */ if (view->window_child_focus) { GdkEventKey *new_event; gboolean handled; new_event = (GdkEventKey *) gdk_event_copy ((GdkEvent *)event); g_object_unref (new_event->window); new_event->window = g_object_ref (view->window_child_focus->window->window); gtk_widget_realize (view->window_child_focus->window); handled = gtk_widget_event (view->window_child_focus->window, (GdkEvent *)new_event); gdk_event_free ((GdkEvent *)new_event); return handled; } return FALSE; } if (!view->presentation || view->presentation_state == EV_PRESENTATION_END) return gtk_bindings_activate_event (GTK_OBJECT (widget), event); current = view->presentation_state; switch (event->keyval) { case GDK_b: case GDK_B: case GDK_period: case GDK_KP_Decimal: view->presentation_state = (view->presentation_state == EV_PRESENTATION_BLACK) ? EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK; break; case GDK_w: case GDK_W: view->presentation_state = (view->presentation_state == EV_PRESENTATION_WHITE) ? EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE; break; default: if (view->presentation_state == EV_PRESENTATION_BLACK || view->presentation_state == EV_PRESENTATION_WHITE) { view->presentation_state = EV_PRESENTATION_NORMAL; } } if (current == view->presentation_state) { if (ev_document_get_n_pages (view->document) > 1 && key_is_numeric (event->keyval)) { gint x, y; ev_view_goto_window_create (view); ev_view_goto_window_send_key_event (view, (GdkEvent *)event); gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y); gtk_window_move (GTK_WINDOW (view->goto_window), x, y); gtk_widget_show (view->goto_window); ev_view_goto_entry_grab_focus (view); return TRUE; } return gtk_bindings_activate_event (GTK_OBJECT (widget), event); } switch (view->presentation_state) { case EV_PRESENTATION_NORMAL: case EV_PRESENTATION_BLACK: gdk_window_set_background (view->layout.bin_window, &widget->style->black); break; case EV_PRESENTATION_WHITE: gdk_window_set_background (view->layout.bin_window, &widget->style->white); break; default: return gtk_bindings_activate_event (GTK_OBJECT (widget), event); } gtk_widget_queue_draw (widget); return TRUE; } static gint ev_view_focus_in (GtkWidget *widget, GdkEventFocus *event) { if (EV_VIEW (widget)->pixbuf_cache) ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache); gtk_widget_queue_draw (widget); return FALSE; } static gint ev_view_focus_out (GtkWidget *widget, GdkEventFocus *event) { if (EV_VIEW (widget)->goto_window) ev_view_goto_window_hide (EV_VIEW (widget)); if (EV_VIEW (widget)->pixbuf_cache) ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache); gtk_widget_queue_draw (widget); return FALSE; } static gboolean ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing *event) { EvView *view = EV_VIEW (widget); if (view->cursor != EV_VIEW_CURSOR_NORMAL) ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); return FALSE; } static gboolean ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing *event) { EvView *view = EV_VIEW (widget); ev_view_handle_cursor_over_xy (view, event->x, event->y); return FALSE; } static void ev_view_style_set (GtkWidget *widget, GtkStyle *old_style) { if (EV_VIEW (widget)->pixbuf_cache) ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache); GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style); } /*** Drawing ***/ static guint32 ev_gdk_color_to_rgb (const GdkColor *color) { guint32 result; result = (0xff0000 | (color->red & 0xff00)); result <<= 8; result |= ((color->green & 0xff00) | (color->blue >> 8)); return result; } static void draw_rubberband (GtkWidget *widget, GdkWindow *window, const GdkRectangle *rect, guchar alpha) { GdkGC *gc; GdkPixbuf *pixbuf; GdkColor *fill_color_gdk; guint fill_color; fill_color_gdk = gdk_color_copy (>K_WIDGET (widget)->style->base[GTK_STATE_SELECTED]); fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha; pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, rect->width, rect->height); gdk_pixbuf_fill (pixbuf, fill_color); gdk_draw_pixbuf (window, NULL, pixbuf, 0, 0, rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y, rect->width, rect->height, GDK_RGB_DITHER_NONE, 0, 0); g_object_unref (pixbuf); gc = gdk_gc_new (window); gdk_gc_set_rgb_fg_color (gc, fill_color_gdk); gdk_draw_rectangle (window, gc, FALSE, rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y, rect->width - 1, rect->height - 1); g_object_unref (gc); gdk_color_free (fill_color_gdk); } static void highlight_find_results (EvView *view, int page) { gint i, n_results = 0; n_results = ev_view_find_get_n_results (view, page); for (i = 0; i < n_results; i++) { EvRectangle *rectangle; GdkRectangle view_rectangle; guchar alpha; if (i == view->find_result && page == view->current_page) { alpha = 0x90; } else { alpha = 0x20; } rectangle = ev_view_find_get_result (view, page, i); doc_rect_to_view_rect (view, page, rectangle, &view_rectangle); draw_rubberband (GTK_WIDGET (view), view->layout.bin_window, &view_rectangle, alpha); } } static void draw_loading_text (EvView *view, GdkRectangle *page_area, GdkRectangle *expose_area) { cairo_t *cr; gint width, height; if (!view->loading_text) { const gchar *loading_text = _("Loading..."); PangoLayout *layout; PangoFontDescription *font_desc; PangoRectangle logical_rect; gint target_width; gdouble real_scale; ev_document_fc_mutex_lock (); layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text); font_desc = pango_font_description_new (); /* We set the font to be 10 points, get the size, and scale appropriately */ pango_font_description_set_size (font_desc, 10 * PANGO_SCALE); pango_layout_set_font_description (layout, font_desc); pango_layout_get_pixel_extents (layout, NULL, &logical_rect); target_width = MAX (page_area->width / 2, 1); real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10); pango_font_description_set_size (font_desc, (int)real_scale); pango_layout_set_font_description (layout, font_desc); pango_layout_get_pixel_extents (layout, NULL, &logical_rect); view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, logical_rect.width, logical_rect.height); cr = cairo_create (view->loading_text); cairo_set_source_rgb (cr, 155 / (double)255, 155 / (double)255, 155 / (double)255); pango_cairo_show_layout (cr, layout); cairo_destroy (cr); pango_font_description_free (font_desc); g_object_unref (layout); ev_document_fc_mutex_unlock (); } width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2; height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2; cr = gdk_cairo_create (view->layout.bin_window); cairo_translate (cr, page_area->x + width, page_area->y + height); cairo_set_source_surface (cr, view->loading_text, 0, 0); cairo_paint (cr); cairo_destroy (cr); } static void draw_one_page (EvView *view, gint page, cairo_t *cr, GdkRectangle *page_area, GtkBorder *border, GdkRectangle *expose_area, gboolean *page_ready) { GdkRectangle overlap; GdkRectangle real_page_area; g_assert (view->document); if (! gdk_rectangle_intersect (page_area, expose_area, &overlap)) return; /* Render the document itself */ real_page_area = *page_area; real_page_area.x += border->left; real_page_area.y += border->top; real_page_area.width -= (border->left + border->right); real_page_area.height -= (border->top + border->bottom); *page_ready = TRUE; if (!view->presentation) { gint current_page; current_page = ev_document_model_get_page (view->model); ev_document_misc_paint_one_page (view->layout.bin_window, GTK_WIDGET (view), page_area, border, page == current_page); } if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) { gint width, height; gint page_width, page_height; cairo_surface_t *page_surface = NULL; gint selection_width, selection_height; cairo_surface_t *selection_surface = NULL; page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page); if (!page_surface) { if (!view->presentation) { draw_loading_text (view, &real_page_area, expose_area); } *page_ready = FALSE; return; } ev_view_get_page_size (view, page, &width, &height); page_width = cairo_image_surface_get_width (page_surface); page_height = cairo_image_surface_get_height (page_surface); cairo_save (cr); cairo_translate (cr, overlap.x, overlap.y); if (width != page_width || height != page_height) { cairo_pattern_set_filter (cairo_get_source (cr), CAIRO_FILTER_FAST); cairo_scale (cr, (gdouble)width / page_width, (gdouble)height / page_height); } cairo_surface_set_device_offset (page_surface, overlap.x - real_page_area.x, overlap.y - real_page_area.y); cairo_set_source_surface (cr, page_surface, 0, 0); cairo_paint (cr); cairo_restore (cr); /* Get the selection pixbuf iff we have something to draw */ if (find_selection_for_page (view, page) && view->selection_mode == EV_VIEW_SELECTION_TEXT) { selection_surface = ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache, page, view->scale, NULL); } if (!selection_surface) { return; } selection_width = cairo_image_surface_get_width (selection_surface); selection_height = cairo_image_surface_get_height (selection_surface); cairo_save (cr); cairo_translate (cr, overlap.x, overlap.y); if (width != selection_width || height != selection_height) { cairo_pattern_set_filter (cairo_get_source (cr), CAIRO_FILTER_FAST); cairo_scale (cr, (gdouble)width / selection_width, (gdouble)height / selection_height); } cairo_surface_set_device_offset (selection_surface, overlap.x - real_page_area.x, overlap.y - real_page_area.y); cairo_set_source_surface (cr, selection_surface, 0, 0); cairo_paint (cr); cairo_restore (cr); } } /*** GObject functions ***/ static void ev_view_finalize (GObject *object) { EvView *view = EV_VIEW (object); clear_selection (view); clear_link_selected (view); if (view->image_dnd_info.image) g_object_unref (view->image_dnd_info.image); view->image_dnd_info.image = NULL; G_OBJECT_CLASS (ev_view_parent_class)->finalize (object); } static void ev_view_destroy (GtkObject *object) { EvView *view = EV_VIEW (object); if (view->model) { g_object_unref (view->model); view->model = NULL; } if (view->document) { g_object_unref (view->document); view->document = NULL; } if (view->pixbuf_cache) { g_object_unref (view->pixbuf_cache); view->pixbuf_cache = NULL; } if (view->goto_window) { gtk_widget_destroy (view->goto_window); view->goto_window = NULL; view->goto_entry = NULL; } ev_view_window_children_free (view); if (view->selection_scroll_id) { g_source_remove (view->selection_scroll_id); view->selection_scroll_id = 0; } if (view->selection_update_id) { g_source_remove (view->selection_update_id); view->selection_update_id = 0; } if (view->loading_text) { cairo_surface_destroy (view->loading_text); view->loading_text = NULL; } if (view->scroll_info.timeout_id) { g_source_remove (view->scroll_info.timeout_id); view->scroll_info.timeout_id = 0; } if (view->drag_info.drag_timeout_id) { g_source_remove (view->drag_info.drag_timeout_id); view->drag_info.drag_timeout_id = 0; } if (view->drag_info.release_timeout_id) { g_source_remove (view->drag_info.release_timeout_id); view->drag_info.release_timeout_id = 0; } ev_view_presentation_transition_stop (view); ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL); GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object); } static void ev_view_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { EvView *view = EV_VIEW (object); switch (prop_id) { case PROP_CONTINUOUS: ev_view_set_continuous (view, g_value_get_boolean (value)); break; case PROP_DUAL_PAGE: ev_view_set_dual_page (view, g_value_get_boolean (value)); break; case PROP_FULLSCREEN: ev_view_set_fullscreen (view, g_value_get_boolean (value)); break; case PROP_PRESENTATION: ev_view_set_presentation (view, g_value_get_boolean (value)); break; case PROP_SIZING_MODE: ev_view_set_sizing_mode (view, g_value_get_enum (value)); break; case PROP_ZOOM: ev_view_set_zoom (view, g_value_get_double (value)); break; case PROP_ROTATION: ev_view_set_rotation (view, g_value_get_int (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); } } static AtkObject * ev_view_get_accessible (GtkWidget *widget) { static gboolean first_time = TRUE; if (first_time) { AtkObjectFactory *factory; AtkRegistry *registry; GType derived_type; GType derived_atk_type; /* * Figure out whether accessibility is enabled by looking at the * type of the accessible object which would be created for * the parent type of EvView. */ derived_type = g_type_parent (EV_TYPE_VIEW); registry = atk_get_default_registry (); factory = atk_registry_get_factory (registry, derived_type); derived_atk_type = atk_object_factory_get_accessible_type (factory); if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE)) atk_registry_set_factory_type (registry, EV_TYPE_VIEW, ev_view_accessible_factory_get_type ()); first_time = FALSE; } return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget); } static void ev_view_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { EvView *view = EV_VIEW (object); switch (prop_id) { case PROP_CONTINUOUS: g_value_set_boolean (value, view->continuous); break; case PROP_DUAL_PAGE: g_value_set_boolean (value, view->dual_page); break; case PROP_FULLSCREEN: g_value_set_boolean (value, view->fullscreen); break; case PROP_PRESENTATION: g_value_set_boolean (value, view->presentation); break; case PROP_SIZING_MODE: g_value_set_enum (value, view->sizing_mode); break; case PROP_ZOOM: g_value_set_double (value, view->scale); break; case PROP_ROTATION: g_value_set_int (value, view->rotation); break; case PROP_HAS_SELECTION: g_value_set_boolean (value, view->selection_info.selections != NULL); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); } } static void ev_view_class_init (EvViewClass *class) { GObjectClass *object_class = G_OBJECT_CLASS (class); GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class); GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class); GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class); GtkBindingSet *binding_set; object_class->finalize = ev_view_finalize; object_class->set_property = ev_view_set_property; object_class->get_property = ev_view_get_property; widget_class->expose_event = ev_view_expose_event; widget_class->button_press_event = ev_view_button_press_event; widget_class->motion_notify_event = ev_view_motion_notify_event; widget_class->button_release_event = ev_view_button_release_event; widget_class->key_press_event = ev_view_key_press_event; widget_class->focus_in_event = ev_view_focus_in; widget_class->focus_out_event = ev_view_focus_out; widget_class->get_accessible = ev_view_get_accessible; widget_class->size_request = ev_view_size_request; widget_class->size_allocate = ev_view_size_allocate; widget_class->realize = ev_view_realize; widget_class->scroll_event = ev_view_scroll_event; widget_class->enter_notify_event = ev_view_enter_notify_event; widget_class->leave_notify_event = ev_view_leave_notify_event; widget_class->style_set = ev_view_style_set; widget_class->drag_data_get = ev_view_drag_data_get; widget_class->drag_motion = ev_view_drag_motion; widget_class->popup_menu = ev_view_popup_menu; widget_class->query_tooltip = ev_view_query_tooltip; gtk_object_class->destroy = ev_view_destroy; layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments; class->binding_activated = ev_view_scroll; signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EvViewClass, binding_activated), NULL, NULL, ev_view_marshal_VOID__ENUM_BOOLEAN, G_TYPE_NONE, 2, GTK_TYPE_SCROLL_TYPE, G_TYPE_BOOLEAN); signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EvViewClass, handle_link), NULL, NULL, g_cclosure_marshal_VOID__OBJECT, G_TYPE_NONE, 1, G_TYPE_OBJECT); signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EvViewClass, external_link), NULL, NULL, g_cclosure_marshal_VOID__OBJECT, G_TYPE_NONE, 1, G_TYPE_OBJECT); signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EvViewClass, popup_menu), NULL, NULL, g_cclosure_marshal_VOID__OBJECT, G_TYPE_NONE, 1, G_TYPE_OBJECT); g_object_class_install_property (object_class, PROP_CONTINUOUS, g_param_spec_boolean ("continuous", "Continuous", "Continuous scrolling mode", TRUE, G_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_DUAL_PAGE, g_param_spec_boolean ("dual-page", "Dual Page", "Two pages visible at once", FALSE, G_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_FULLSCREEN, g_param_spec_boolean ("fullscreen", "Full Screen", "Draw page in a fullscreen fashion", FALSE, G_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_PRESENTATION, g_param_spec_boolean ("presentation", "Presentation", "Draw page in presentation mode", TRUE, G_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_SIZING_MODE, g_param_spec_enum ("sizing-mode", "Sizing Mode", "Sizing Mode", EV_TYPE_SIZING_MODE, EV_SIZING_FIT_WIDTH, G_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_ZOOM, g_param_spec_double ("zoom", "Zoom factor", "Zoom factor", 0, G_MAXDOUBLE, 1.0, G_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_ROTATION, g_param_spec_double ("rotation", "Rotation", "Rotation", 0, 360, 0, G_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_HAS_SELECTION, g_param_spec_boolean ("has-selection", "Has selection", "The view has selections", FALSE, G_PARAM_READABLE)); binding_set = gtk_binding_set_by_class (class); add_scroll_binding_keypad (binding_set, GDK_Left, 0, GTK_SCROLL_STEP_BACKWARD, TRUE); add_scroll_binding_keypad (binding_set, GDK_Right, 0, GTK_SCROLL_STEP_FORWARD, TRUE); add_scroll_binding_keypad (binding_set, GDK_Left, GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, TRUE); add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, GTK_SCROLL_STEP_UP, TRUE); add_scroll_binding_keypad (binding_set, GDK_Up, 0, GTK_SCROLL_STEP_BACKWARD, FALSE); add_scroll_binding_keypad (binding_set, GDK_Down, 0, GTK_SCROLL_STEP_FORWARD, FALSE); add_scroll_binding_keypad (binding_set, GDK_Up, GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, FALSE); add_scroll_binding_keypad (binding_set, GDK_Down, GDK_MOD1_MASK, GTK_SCROLL_STEP_UP, FALSE); gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE); gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE); gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE); gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE, GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE); } static void ev_view_init (EvView *view) { GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS); view->start_page = -1; view->end_page = -1; view->spacing = 5; view->scale = 1.0; view->current_page = 0; view->pressed_button = -1; view->cursor = EV_VIEW_CURSOR_NORMAL; view->drag_info.in_drag = FALSE; view->scroll_info.autoscrolling = FALSE; view->selection_info.selections = NULL; view->selection_info.in_selection = FALSE; view->selection_info.in_drag = FALSE; view->selection_mode = EV_VIEW_SELECTION_TEXT; view->continuous = TRUE; view->dual_page = FALSE; view->presentation = FALSE; view->presentation_state = EV_PRESENTATION_NORMAL; view->fullscreen = FALSE; view->sizing_mode = EV_SIZING_FIT_WIDTH; view->pending_scroll = SCROLL_TO_KEEP_POSITION; view->jump_to_find_result = TRUE; view->highlight_find_results = FALSE; gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL); gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL); } /*** Callbacks ***/ static void ev_view_change_page (EvView *view, gint new_page, gboolean start_transition) { gint x, y; view->current_page = new_page; view->pending_scroll = SCROLL_TO_PAGE_POSITION; if (view->presentation && start_transition) ev_view_presentation_transition_start (view); gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y); ev_view_handle_cursor_over_xy (view, x, y); gtk_widget_queue_resize (GTK_WIDGET (view)); } static void ev_view_transition_animation_finish (EvTransitionAnimation *animation, EvView *view) { g_object_unref (view->animation); view->animation = NULL; ev_view_change_page (view, view->current_page, TRUE); } /** * ev_view_transition_animation_cancel: * @animation: Animation to finish * @view: An EvView * * Does almost the same as cancel, but without scheduling the transition. */ static void ev_view_transition_animation_cancel (EvTransitionAnimation *animation, EvView *view) { g_object_unref (view->animation); view->animation = NULL; ev_view_change_page (view, view->current_page, FALSE); } static void ev_view_transition_animation_frame (EvTransitionAnimation *animation, gdouble progress, EvView *view) { gtk_widget_queue_draw (GTK_WIDGET (view)); } static void ev_view_presentation_animation_start (EvView *view, int new_page) { EvTransitionEffect *effect = NULL; cairo_surface_t *surface; if (EV_IS_DOCUMENT_TRANSITION (view->document)) effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (view->document), view->current_page); if (!effect) return; view->animation = ev_transition_animation_new (effect); surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page); ev_transition_animation_set_origin_surface (view->animation, surface); surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, new_page); if (surface) ev_transition_animation_set_dest_surface (view->animation, surface); g_signal_connect (view->animation, "frame", G_CALLBACK (ev_view_transition_animation_frame), view); g_signal_connect (view->animation, "finished", G_CALLBACK (ev_view_transition_animation_finish), view); } static void job_finished_cb (EvPixbufCache *pixbuf_cache, GdkRegion *region, EvView *view) { if (view->animation) { cairo_surface_t *surface; surface = ev_pixbuf_cache_get_surface (pixbuf_cache, view->current_page); ev_transition_animation_set_dest_surface (view->animation, surface); } if (region) { gdk_window_invalidate_region (view->layout.bin_window, region, TRUE); } else { gtk_widget_queue_draw (GTK_WIDGET (view)); } } static void ev_view_page_changed_cb (EvDocumentModel *model, gint old_page, gint new_page, EvView *view) { if (!view->document) return; if (view->current_page != new_page) { if (view->presentation) ev_view_presentation_animation_start (view, new_page); ev_view_change_page (view, new_page, TRUE); } else { gtk_widget_queue_draw (GTK_WIDGET (view)); } view->find_result = 0; } static void on_adjustment_value_changed (GtkAdjustment *adjustment, EvView *view) { int dx = 0, dy = 0; gint x, y; GList *children, *l; if (! GTK_WIDGET_REALIZED (view)) return; if (view->hadjustment) { dx = view->scroll_x - (int) view->hadjustment->value; view->scroll_x = (int) view->hadjustment->value; } else { view->scroll_x = 0; } if (view->vadjustment) { dy = view->scroll_y - (int) view->vadjustment->value; view->scroll_y = (int) view->vadjustment->value; } else { view->scroll_y = 0; } children = gtk_container_get_children (GTK_CONTAINER (view)); for (l = children; l && l->data; l = g_list_next (l)) { gint child_x, child_y; GtkWidget *child = (GtkWidget *)l->data; gtk_container_child_get (GTK_CONTAINER (view), child, "x", &child_x, "y", &child_y, NULL); gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy); } g_list_free (children); for (l = view->window_children; l && l->data; l = g_list_next (l)) { EvViewWindowChild *child; child = (EvViewWindowChild *)l->data; ev_view_window_child_move (view, child, child->x + dx, child->y + dy); } if (view->pending_resize) gtk_widget_queue_draw (GTK_WIDGET (view)); else gdk_window_scroll (view->layout.bin_window, dx, dy); gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y); ev_view_handle_cursor_over_xy (view, x, y); if (view->document) view_update_range_and_current_page (view); } GtkWidget* ev_view_new (void) { GtkWidget *view; view = g_object_new (EV_TYPE_VIEW, NULL); return view; } static void setup_caches (EvView *view) { view->height_to_page_cache = ev_view_get_height_to_page_cache (view); view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document); g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view); } static void clear_caches (EvView *view) { if (view->pixbuf_cache) { g_object_unref (view->pixbuf_cache); view->pixbuf_cache = NULL; } } void ev_view_set_loading (EvView *view, gboolean loading) { view->loading = loading; gtk_widget_queue_draw (GTK_WIDGET (view)); } static gboolean ev_view_autoscroll_cb (EvView *view) { gdouble speed, value; /* If the user stops autoscrolling, autoscrolling will be * set to false but the timeout will continue; stop the timeout: */ if (!view->scroll_info.autoscrolling) { view->scroll_info.timeout_id = 0; return FALSE; } if (view->scroll_info.last_y > view->scroll_info.start_y && (view->scroll_info.last_y < view->scroll_info.start_y)) return TRUE; /* Replace 100 with your speed of choice: The lower the faster. * Replace 3 with another speed of choice: The higher, the faster it accelerated * based on the distance of the starting point from the mouse * (All also effected by the timeout interval of this callback) */ if (view->scroll_info.start_y > view->scroll_info.last_y) speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3); else speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3); value = gtk_adjustment_get_value (view->vadjustment); value = CLAMP (value + speed, 0, view->vadjustment->upper - view->vadjustment->page_size); gtk_adjustment_set_value (view->vadjustment, value); return TRUE; } void ev_view_autoscroll_start (EvView *view) { gint x, y; g_return_if_fail (EV_IS_VIEW (view)); if (view->scroll_info.autoscrolling) return; view->scroll_info.autoscrolling = TRUE; view->scroll_info.timeout_id = g_timeout_add (20, (GSourceFunc)ev_view_autoscroll_cb, view); gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y); ev_view_handle_cursor_over_xy (view, x, y); } void ev_view_autoscroll_stop (EvView *view) { gint x, y; g_return_if_fail (EV_IS_VIEW (view)); if (!view->scroll_info.autoscrolling) return; view->scroll_info.autoscrolling = FALSE; if (view->scroll_info.timeout_id) { g_source_remove (view->scroll_info.timeout_id); view->scroll_info.timeout_id = 0; } gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y); ev_view_handle_cursor_over_xy (view, x, y); } static void ev_view_document_changed_cb (EvDocumentModel *model, GParamSpec *pspec, EvView *view) { EvDocument *document = ev_document_model_get_document (model); view->loading = FALSE; if (document != view->document) { clear_caches (view); if (view->document) { g_object_unref (view->document); } view->document = document; view->find_result = 0; if (view->document) { g_object_ref (view->document); setup_caches (view); } ev_view_change_page (view, ev_document_model_get_page (model), TRUE); } } static void ev_view_rotation_changed_cb (EvDocumentModel *model, GParamSpec *pspec, EvView *view) { gint rotation = ev_document_model_get_rotation (model); ev_view_set_rotation (view, rotation); if (view->pixbuf_cache) { ev_pixbuf_cache_clear (view->pixbuf_cache); if (!ev_document_is_page_size_uniform (view->document)) view->pending_scroll = SCROLL_TO_PAGE_POSITION; gtk_widget_queue_resize (GTK_WIDGET (view)); } ev_view_remove_all (view); if (rotation != 0) clear_selection (view); } static void ev_view_sizing_mode_changed_cb (EvDocumentModel *model, GParamSpec *pspec, EvView *view) { EvSizingMode mode = ev_document_model_get_sizing_mode (model); ev_view_set_sizing_mode (view, mode); if (mode != EV_SIZING_FREE) gtk_widget_queue_resize (GTK_WIDGET (view)); } #define EPSILON 0.0000001 static void ev_view_scale_changed_cb (EvDocumentModel *model, GParamSpec *pspec, EvView *view) { gdouble scale = ev_document_model_get_scale (model); if (ABS (view->scale - scale) < EPSILON) return; if (view->loading_text) { cairo_surface_destroy (view->loading_text); view->loading_text = NULL; } ev_view_set_zoom (view, scale); view->pending_resize = TRUE; gtk_widget_queue_resize (GTK_WIDGET (view)); } static void ev_view_continuous_changed_cb (EvDocumentModel *model, GParamSpec *pspec, EvView *view) { gboolean continuous = ev_document_model_get_continuous (model); ev_view_set_continuous (view, continuous); view->pending_scroll = SCROLL_TO_PAGE_POSITION; gtk_widget_queue_resize (GTK_WIDGET (view)); } static void ev_view_dual_page_changed_cb (EvDocumentModel *model, GParamSpec *pspec, EvView *view) { gboolean dual_page = ev_document_model_get_dual_page (model); ev_view_set_dual_page (view, dual_page); view->pending_scroll = SCROLL_TO_PAGE_POSITION; /* FIXME: if we're keeping the pixbuf cache around, we should extend the * preload_cache_size to be 2 if dual_page is set. */ gtk_widget_queue_resize (GTK_WIDGET (view)); } static void ev_view_fullscreen_changed_cb (EvDocumentModel *model, GParamSpec *pspec, EvView *view) { gboolean fullscreen = ev_document_model_get_fullscreen (model); ev_view_set_fullscreen (view, fullscreen); gtk_widget_queue_resize (GTK_WIDGET (view)); } void ev_view_set_model (EvView *view, EvDocumentModel *model) { g_return_if_fail (EV_IS_VIEW (view)); g_return_if_fail (EV_IS_DOCUMENT_MODEL (model)); if (model == view->model) return; if (view->model) { g_signal_handlers_disconnect_by_func (view->model, ev_view_document_changed_cb, view); g_signal_handlers_disconnect_by_func (view->model, ev_view_page_changed_cb, view); g_object_unref (view->model); } view->model = g_object_ref (model); g_signal_connect (view->model, "notify::document", G_CALLBACK (ev_view_document_changed_cb), view); g_signal_connect (view->model, "notify::rotation", G_CALLBACK (ev_view_rotation_changed_cb), view); g_signal_connect (view->model, "notify::sizing-mode", G_CALLBACK (ev_view_sizing_mode_changed_cb), view); g_signal_connect (view->model, "notify::scale", G_CALLBACK (ev_view_scale_changed_cb), view); g_signal_connect (view->model, "notify::continuous", G_CALLBACK (ev_view_continuous_changed_cb), view); g_signal_connect (view->model, "notify::dual-page", G_CALLBACK (ev_view_dual_page_changed_cb), view); g_signal_connect (view->model, "notify::fullscreen", G_CALLBACK (ev_view_fullscreen_changed_cb), view); g_signal_connect (view->model, "page-changed", G_CALLBACK (ev_view_page_changed_cb), view); } static void ev_view_reload_page (EvView *view, gint page, GdkRegion *region) { ev_pixbuf_cache_reload_page (view->pixbuf_cache, region, page, view->rotation, view->scale); } void ev_view_reload (EvView *view) { ev_pixbuf_cache_clear (view->pixbuf_cache); view_update_range_and_current_page (view); } /*** Zoom and sizing mode ***/ void ev_view_set_zoom (EvView *view, double scale) { view->scale = scale; g_object_notify (G_OBJECT (view), "zoom"); } double ev_view_get_zoom (EvView *view) { return view->scale; } gboolean ev_view_get_continuous (EvView *view) { g_return_val_if_fail (EV_IS_VIEW (view), FALSE); return view->continuous; } void ev_view_set_continuous (EvView *view, gboolean continuous) { g_return_if_fail (EV_IS_VIEW (view)); view->continuous = continuous; g_object_notify (G_OBJECT (view), "continuous"); } gboolean ev_view_get_dual_page (EvView *view) { g_return_val_if_fail (EV_IS_VIEW (view), FALSE); return view->dual_page; } void ev_view_set_dual_page (EvView *view, gboolean dual_page) { g_return_if_fail (EV_IS_VIEW (view)); view->dual_page = dual_page; g_object_notify (G_OBJECT (view), "dual-page"); } void ev_view_set_fullscreen (EvView *view, gboolean fullscreen) { g_return_if_fail (EV_IS_VIEW (view)); view->fullscreen = fullscreen; g_object_notify (G_OBJECT (view), "fullscreen"); } gboolean ev_view_get_fullscreen (EvView *view) { g_return_val_if_fail (EV_IS_VIEW (view), FALSE); return view->fullscreen; } void ev_view_set_presentation (EvView *view, gboolean presentation) { g_return_if_fail (EV_IS_VIEW (view)); presentation = presentation != FALSE; if (view->presentation == presentation) return; if (!presentation) view->presentation_state = EV_PRESENTATION_NORMAL; view->presentation = presentation; view->pending_scroll = SCROLL_TO_PAGE_POSITION; if (presentation) { view->sizing_mode_saved = view->sizing_mode; view->scale_saved = view->scale; ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT); } else { ev_document_model_set_sizing_mode (view->model, view->sizing_mode_saved); ev_document_model_set_scale (view->model, view->scale_saved); } gtk_widget_queue_resize (GTK_WIDGET (view)); if (presentation) ev_view_presentation_transition_start (view); else { ev_view_presentation_transition_stop (view); if (view->animation) { /* stop any running animation */ ev_view_transition_animation_cancel (view->animation, view); } } if (GTK_WIDGET_REALIZED (view)) { if (view->presentation) gdk_window_set_background (view->layout.bin_window, >K_WIDGET (view)->style->black); else gdk_window_set_background (view->layout.bin_window, >K_WIDGET (view)->style->mid [GTK_STATE_NORMAL]); } g_object_notify (G_OBJECT (view), "presentation"); } gboolean ev_view_get_presentation (EvView *view) { g_return_val_if_fail (EV_IS_VIEW (view), FALSE); return view->presentation; } static gboolean transition_next_page (EvView *view) { ev_view_next_page (view); return FALSE; } static void ev_view_presentation_transition_stop (EvView *view) { if (view->trans_timeout_id > 0) g_source_remove (view->trans_timeout_id); view->trans_timeout_id = 0; } static void ev_view_presentation_transition_start (EvView *view) { gdouble duration; if (!EV_IS_DOCUMENT_TRANSITION (view->document)) return; ev_view_presentation_transition_stop (view); duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document), view->current_page); if (duration > 0) { view->trans_timeout_id = g_timeout_add_seconds (duration, (GSourceFunc) transition_next_page, view); } } void ev_view_set_sizing_mode (EvView *view, EvSizingMode sizing_mode) { view->sizing_mode = sizing_mode; g_object_notify (G_OBJECT (view), "sizing-mode"); } EvSizingMode ev_view_get_sizing_mode (EvView *view) { g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE); return view->sizing_mode; } gboolean ev_view_can_zoom_in (EvView *view) { return view->scale * ZOOM_IN_FACTOR <= ev_document_model_get_max_scale (view->model); } gboolean ev_view_can_zoom_out (EvView *view) { return view->scale * ZOOM_OUT_FACTOR >= ev_document_model_get_min_scale (view->model); } void ev_view_zoom_in (EvView *view) { gdouble scale; g_return_if_fail (view->sizing_mode == EV_SIZING_FREE); if (view->presentation) return; view->pending_scroll = SCROLL_TO_CENTER; scale = ev_document_model_get_scale (view->model) * ZOOM_IN_FACTOR; ev_document_model_set_scale (view->model, scale); } void ev_view_zoom_out (EvView *view) { gdouble scale; g_return_if_fail (view->sizing_mode == EV_SIZING_FREE); if (view->presentation) return; view->pending_scroll = SCROLL_TO_CENTER; scale = ev_document_model_get_scale (view->model) * ZOOM_OUT_FACTOR; ev_document_model_set_scale (view->model, scale); } void ev_view_set_rotation (EvView *view, int rotation) { view->rotation = rotation; g_object_notify (G_OBJECT (view), "rotation"); } int ev_view_get_rotation (EvView *view) { return view->rotation; } static double zoom_for_size_fit_width (gdouble doc_width, gdouble doc_height, int target_width, int target_height) { double scale; scale = (double)target_width / doc_width; if (doc_height * scale > target_height) scale = (double)target_width / doc_width; return scale; } static double zoom_for_size_fit_height (gdouble doc_width, gdouble doc_height, int target_width, int target_height) { double scale; scale = (double)target_height / doc_height; if (doc_width * scale > target_width) scale = (double)target_height / doc_height; return scale; } static double zoom_for_size_best_fit (gdouble doc_width, gdouble doc_height, int target_width, int target_height) { double w_scale; double h_scale; w_scale = (double)target_width / doc_width; h_scale = (double)target_height / doc_height; if (doc_height * w_scale > target_height) w_scale = (double)target_width / doc_width; if (doc_width * h_scale > target_width) h_scale = (double)target_height / doc_height; return MIN (w_scale, h_scale); } static void ev_view_zoom_for_size_presentation (EvView *view, int width, int height) { gdouble doc_width, doc_height; gdouble scale; get_doc_page_size (view, view->current_page, &doc_width, &doc_height); scale = zoom_for_size_best_fit (doc_width, doc_height, width, height); ev_document_model_set_scale (view->model, scale); } static void ev_view_zoom_for_size_continuous_and_dual_page (EvView *view, int width, int height) { gdouble doc_width, doc_height; GtkBorder border; gdouble scale; ev_document_get_max_page_size (view->document, &doc_width, &doc_height); if (view->rotation == 90 || view->rotation == 270) { gdouble tmp; tmp = doc_width; doc_width = doc_height; doc_height = tmp; } compute_border (view, doc_width, doc_height, &border); doc_width *= 2; width -= (2 * (border.left + border.right) + 3 * view->spacing); height -= (border.top + border.bottom + 2 * view->spacing - 1); if (view->sizing_mode == EV_SIZING_FIT_WIDTH) scale = zoom_for_size_fit_width (doc_width, doc_height, width, height); else if (view->sizing_mode == EV_SIZING_BEST_FIT) scale = zoom_for_size_best_fit (doc_width, doc_height, width, height); else g_assert_not_reached (); ev_document_model_set_scale (view->model, scale); } static void ev_view_zoom_for_size_continuous (EvView *view, int width, int height) { gdouble doc_width, doc_height; GtkBorder border; gdouble scale; ev_document_get_max_page_size (view->document, &doc_width, &doc_height); if (view->rotation == 90 || view->rotation == 270) { gdouble tmp; tmp = doc_width; doc_width = doc_height; doc_height = tmp; } compute_border (view, doc_width, doc_height, &border); width -= (border.left + border.right + 2 * view->spacing); height -= (border.top + border.bottom + 2 * view->spacing - 1); if (view->sizing_mode == EV_SIZING_FIT_WIDTH) scale = zoom_for_size_fit_width (doc_width, doc_height, width, height); else if (view->sizing_mode == EV_SIZING_BEST_FIT) scale = zoom_for_size_best_fit (doc_width, doc_height, width, height); else g_assert_not_reached (); ev_document_model_set_scale (view->model, scale); } static void ev_view_zoom_for_size_dual_page (EvView *view, int width, int height) { GtkBorder border; gdouble doc_width, doc_height; gdouble scale; gint other_page; other_page = view->current_page ^ 1; /* Find the largest of the two. */ get_doc_page_size (view, view->current_page, &doc_width, &doc_height); if (other_page < ev_document_get_n_pages (view->document)) { gdouble width_2, height_2; get_doc_page_size (view, other_page, &width_2, &height_2); if (width_2 > doc_width) doc_width = width_2; if (height_2 > doc_height) doc_height = height_2; } compute_border (view, width, height, &border); doc_width = doc_width * 2; width -= ((border.left + border.right)* 2 + 3 * view->spacing); height -= (border.top + border.bottom + 2 * view->spacing); if (view->sizing_mode == EV_SIZING_FIT_WIDTH) scale = zoom_for_size_fit_width (doc_width, doc_height, width, height); else if (view->sizing_mode == EV_SIZING_BEST_FIT) scale = zoom_for_size_best_fit (doc_width, doc_height, width, height); else g_assert_not_reached (); ev_document_model_set_scale (view->model, scale); } static void ev_view_zoom_for_size_single_page (EvView *view, int width, int height) { gdouble doc_width, doc_height; GtkBorder border; gdouble scale; get_doc_page_size (view, view->current_page, &doc_width, &doc_height); /* Get an approximate border */ compute_border (view, width, height, &border); width -= (border.left + border.right + 2 * view->spacing); height -= (border.top + border.bottom + 2 * view->spacing); if (view->sizing_mode == EV_SIZING_FIT_WIDTH) scale = zoom_for_size_fit_width (doc_width, doc_height, width, height); else if (view->sizing_mode == EV_SIZING_BEST_FIT) scale = zoom_for_size_best_fit (doc_width, doc_height, width, height); else g_assert_not_reached (); ev_document_model_set_scale (view->model, scale); } static void ev_view_zoom_for_size (EvView *view, int width, int height) { g_return_if_fail (EV_IS_VIEW (view)); g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH || view->sizing_mode == EV_SIZING_BEST_FIT); g_return_if_fail (width >= 0); g_return_if_fail (height >= 0); if (view->document == NULL) return; if (view->presentation) ev_view_zoom_for_size_presentation (view, width, height); else if (view->continuous && view->dual_page) ev_view_zoom_for_size_continuous_and_dual_page (view, width, height); else if (view->continuous) ev_view_zoom_for_size_continuous (view, width, height); else if (view->dual_page) ev_view_zoom_for_size_dual_page (view, width, height); else ev_view_zoom_for_size_single_page (view, width, height); } /*** Find ***/ static gint ev_view_find_get_n_results (EvView *view, gint page) { return view->find_pages ? g_list_length (view->find_pages[page]) : 0; } static EvRectangle * ev_view_find_get_result (EvView *view, gint page, gint result) { return view->find_pages ? (EvRectangle *) g_list_nth_data (view->find_pages[page], result) : NULL; } static void jump_to_find_result (EvView *view) { gint n_results; gint page = view->current_page; n_results = ev_view_find_get_n_results (view, page); if (n_results > 0 && view->find_result < n_results) { EvRectangle *rect; GdkRectangle view_rect; rect = ev_view_find_get_result (view, page, view->find_result); doc_rect_to_view_rect (view, page, rect, &view_rect); ensure_rectangle_is_visible (view, &view_rect); view->jump_to_find_result = FALSE; } } /** * jump_to_find_page * @view: #EvView instance * @direction: Direction to look * @shift: Shift from current page * * Jumps to the first page that has occurences of searched word. * Uses a direction where to look and a shift from current page. * */ static void jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift) { int n_pages, i; n_pages = ev_document_get_n_pages (view->document); for (i = 0; i < n_pages; i++) { int page; if (direction == EV_VIEW_FIND_NEXT) page = view->current_page + i; else page = view->current_page - i; page += shift; if (page >= n_pages) { page = page - n_pages; } else if (page < 0) page = page + n_pages; if (ev_view_find_get_n_results (view, page) > 0) { ev_document_model_set_page (view->model, page); break; } } } void ev_view_find_changed (EvView *view, GList **results, gint page) { view->find_pages = results; if (view->jump_to_find_result == TRUE) { jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0); jump_to_find_result (view); } if (view->current_page == page) gtk_widget_queue_draw (GTK_WIDGET (view)); } void ev_view_find_next (EvView *view) { gint n_results; n_results = ev_view_find_get_n_results (view, view->current_page); view->find_result++; if (view->find_result >= n_results) { view->find_result = 0; jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1); jump_to_find_result (view); } else { jump_to_find_result (view); gtk_widget_queue_draw (GTK_WIDGET (view)); } } void ev_view_find_previous (EvView *view) { view->find_result--; if (view->find_result < 0) { jump_to_find_page (view, EV_VIEW_FIND_PREV, -1); view->find_result = MAX (0, ev_view_find_get_n_results (view, view->current_page) - 1); jump_to_find_result (view); } else { jump_to_find_result (view); gtk_widget_queue_draw (GTK_WIDGET (view)); } } void ev_view_find_search_changed (EvView *view) { /* search string has changed, focus on new search result */ view->jump_to_find_result = TRUE; view->find_pages = NULL; } void ev_view_find_set_highlight_search (EvView *view, gboolean value) { view->highlight_find_results = value; gtk_widget_queue_draw (GTK_WIDGET (view)); } void ev_view_find_cancel (EvView *view) { view->find_pages = NULL; } /*** Selections ***/ /* compute_new_selection_rect/text calculates the area currently selected by * view_rect. each handles a different mode; */ static GList * compute_new_selection_rect (EvView *view, GdkPoint *start, GdkPoint *stop) { GdkRectangle view_rect; int n_pages, i; GList *list = NULL; g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE); view_rect.x = MIN (start->x, stop->x); view_rect.y = MIN (start->y, stop->y); view_rect.width = MAX (start->x, stop->x) - view_rect.x; view_rect.width = MAX (start->y, stop->y) - view_rect.y; n_pages = ev_document_get_n_pages (view->document); for (i = 0; i < n_pages; i++) { GdkRectangle page_area; GtkBorder border; if (get_page_extents (view, i, &page_area, &border)) { GdkRectangle overlap; if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) { EvViewSelection *selection; selection = g_new0 (EvViewSelection, 1); selection->page = i; view_rect_to_doc_rect (view, &overlap, &page_area, &(selection->rect)); list = g_list_append (list, selection); } } } return list; } static gboolean gdk_rectangle_point_in (GdkRectangle *rectangle, GdkPoint *point) { return rectangle->x <= point->x && rectangle->y <= point->y && point->x < rectangle->x + rectangle->width && point->y < rectangle->y + rectangle->height; } static GList * compute_new_selection_text (EvView *view, EvSelectionStyle style, GdkPoint *start, GdkPoint *stop) { int n_pages, i, first, last; GList *list = NULL; EvViewSelection *selection; gdouble width, height; int start_page, end_page; g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT); n_pages = ev_document_get_n_pages (view->document); /* First figure out the range of pages the selection * affects. */ first = n_pages; last = 0; if (view->continuous) { start_page = 0; end_page = n_pages; } else if (view->dual_page) { start_page = view->start_page; end_page = view->end_page + 1; } else { start_page = view->current_page; end_page = view->current_page + 1; } for (i = start_page; i < end_page; i++) { GdkRectangle page_area; GtkBorder border; get_page_extents (view, i, &page_area, &border); if (gdk_rectangle_point_in (&page_area, start) || gdk_rectangle_point_in (&page_area, stop)) { if (first == n_pages) first = i; last = i; } } /* Now create a list of EvViewSelection's for the affected * pages. This could be an empty list, a list of just one * page or a number of pages.*/ for (i = first; i < last + 1; i++) { GdkRectangle page_area; GtkBorder border; GdkPoint *point; get_doc_page_size (view, i, &width, &height); selection = g_new0 (EvViewSelection, 1); selection->page = i; selection->style = style; selection->rect.x1 = selection->rect.y1 = 0; selection->rect.x2 = width; selection->rect.y2 = height; get_page_extents (view, i, &page_area, &border); if (gdk_rectangle_point_in (&page_area, start)) point = start; else point = stop; if (i == first) view_point_to_doc_point (view, point, &page_area, &selection->rect.x1, &selection->rect.y1); /* If the selection is contained within just one page, * make sure we don't write 'start' into both points * in selection->rect. */ if (first == last) point = stop; if (i == last) view_point_to_doc_point (view, point, &page_area, &selection->rect.x2, &selection->rect.y2); list = g_list_append (list, selection); } return list; } /* This function takes the newly calculated list, and figures out which regions * have changed. It then queues a redraw approporiately. */ static void merge_selection_region (EvView *view, GList *new_list) { GList *old_list; GList *new_list_ptr, *old_list_ptr; /* Update the selection */ old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache); g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL); g_list_free (view->selection_info.selections); view->selection_info.selections = new_list; ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list); g_object_notify (G_OBJECT (view), "has-selection"); new_list_ptr = new_list; old_list_ptr = old_list; while (new_list_ptr || old_list_ptr) { EvViewSelection *old_sel, *new_sel; int cur_page; GdkRegion *region = NULL; new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL; old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL; /* Assume that the lists are in order, and we run through them * comparing them, one page at a time. We come out with the * first page we see. */ if (new_sel && old_sel) { if (new_sel->page < old_sel->page) { new_list_ptr = new_list_ptr->next; old_sel = NULL; } else if (new_sel->page > old_sel->page) { old_list_ptr = old_list_ptr->next; new_sel = NULL; } else { new_list_ptr = new_list_ptr->next; old_list_ptr = old_list_ptr->next; } } else if (new_sel) { new_list_ptr = new_list_ptr->next; } else if (old_sel) { old_list_ptr = old_list_ptr->next; } g_assert (new_sel || old_sel); /* is the page we're looking at on the screen?*/ cur_page = new_sel ? new_sel->page : old_sel->page; if (cur_page < view->start_page || cur_page > view->end_page) continue; /* seed the cache with a new page. We are going to need the new * region too. */ if (new_sel) { GdkRegion *tmp_region = NULL; ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache, cur_page, view->scale, &tmp_region); if (tmp_region) { new_sel->covered_region = gdk_region_copy (tmp_region); } } /* Now we figure out what needs redrawing */ if (old_sel && new_sel) { if (old_sel->covered_region && new_sel->covered_region) { /* We only want to redraw the areas that have * changed, so we xor the old and new regions * and redraw if it's different */ region = gdk_region_copy (old_sel->covered_region); gdk_region_xor (region, new_sel->covered_region); if (gdk_region_empty (region)) { gdk_region_destroy (region); region = NULL; } } else if (old_sel->covered_region) { region = gdk_region_copy (old_sel->covered_region); } else if (new_sel->covered_region) { region = gdk_region_copy (new_sel->covered_region); } } else if (old_sel && !new_sel) { if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) { region = gdk_region_copy (old_sel->covered_region); } } else if (!old_sel && new_sel) { if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) { region = gdk_region_copy (new_sel->covered_region); } } else { g_assert_not_reached (); } /* Redraw the damaged region! */ if (region) { GdkRectangle page_area; GtkBorder border; /* I don't know why but the region is smaller * than expected. This hack fixes it, I guess * 10 pixels more won't hurt */ gdk_region_shrink (region, -5, -5); get_page_extents (view, cur_page, &page_area, &border); gdk_region_offset (region, page_area.x + border.left - view->scroll_x, page_area.y + border.top - view->scroll_y); gdk_window_invalidate_region (view->layout.bin_window, region, TRUE); gdk_region_destroy (region); } } /* Free the old list, now that we're done with it. */ g_list_foreach (old_list, (GFunc) selection_free, NULL); g_list_free (old_list); } static void compute_selections (EvView *view, EvSelectionStyle style, GdkPoint *start, GdkPoint *stop) { GList *list; if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE) list = compute_new_selection_rect (view, start, stop); else list = compute_new_selection_text (view, style, start, stop); merge_selection_region (view, list); } /* Free's the selection. It's up to the caller to queue redraws if needed. */ static void selection_free (EvViewSelection *selection) { if (selection->covered_region) gdk_region_destroy (selection->covered_region); g_free (selection); } static void clear_selection (EvView *view) { g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL); g_list_free (view->selection_info.selections); view->selection_info.selections = NULL; view->selection_info.in_selection = FALSE; if (view->pixbuf_cache) ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL); g_object_notify (G_OBJECT (view), "has-selection"); } void ev_view_select_all (EvView *view) { GList *selections = NULL; int n_pages, i; /* Disable selection on rotated pages for the 0.4.0 series */ if (view->rotation != 0) return; clear_selection (view); n_pages = ev_document_get_n_pages (view->document); for (i = 0; i < n_pages; i++) { gdouble width, height; EvViewSelection *selection; get_doc_page_size (view, i, &width, &height); selection = g_new0 (EvViewSelection, 1); selection->page = i; selection->style = EV_SELECTION_STYLE_GLYPH; selection->rect.x1 = selection->rect.y1 = 0; selection->rect.x2 = width; selection->rect.y2 = height; selections = g_list_append (selections, selection); } merge_selection_region (view, selections); gtk_widget_queue_draw (GTK_WIDGET (view)); } gboolean ev_view_get_has_selection (EvView *view) { return view->selection_info.selections != NULL; } static char * get_selected_text (EvView *view) { GString *text; GList *l; gchar *normalized_text; EvRenderContext *rc; text = g_string_new (NULL); rc = ev_render_context_new (NULL, view->rotation, view->scale); ev_document_doc_mutex_lock (); for (l = view->selection_info.selections; l != NULL; l = l->next) { EvViewSelection *selection = (EvViewSelection *)l->data; EvPage *page; gchar *tmp; page = ev_document_get_page (view->document, selection->page); ev_render_context_set_page (rc, page); g_object_unref (page); tmp = ev_selection_get_selected_text (EV_SELECTION (view->document), rc, selection->style, &(selection->rect)); g_string_append (text, tmp); g_free (tmp); } g_object_unref (rc); ev_document_doc_mutex_unlock (); normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC); g_string_free (text, TRUE); return normalized_text; } static void ev_view_clipboard_copy (EvView *view, const gchar *text) { GtkClipboard *clipboard; clipboard = gtk_widget_get_clipboard (GTK_WIDGET (view), GDK_SELECTION_CLIPBOARD); gtk_clipboard_set_text (clipboard, text, -1); } void ev_view_copy (EvView *ev_view) { char *text; if (!EV_IS_SELECTION (ev_view->document)) return; text = get_selected_text (ev_view); ev_view_clipboard_copy (ev_view, text); g_free (text); } static void ev_view_primary_get_cb (GtkClipboard *clipboard, GtkSelectionData *selection_data, guint info, gpointer data) { EvView *ev_view = EV_VIEW (data); if (ev_view->link_selected) { gtk_selection_data_set_text (selection_data, ev_link_action_get_uri (ev_view->link_selected), -1); } else if (EV_IS_SELECTION (ev_view->document) && ev_view->selection_info.selections) { gchar *text; text = get_selected_text (ev_view); if (text) { gtk_selection_data_set_text (selection_data, text, -1); g_free (text); } } } static void ev_view_primary_clear_cb (GtkClipboard *clipboard, gpointer data) { EvView *view = EV_VIEW (data); clear_selection (view); clear_link_selected (view); } static void ev_view_update_primary_selection (EvView *ev_view) { GtkClipboard *clipboard; clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view), GDK_SELECTION_PRIMARY); if (ev_view->selection_info.selections || ev_view->link_selected) { GtkTargetList *target_list; GtkTargetEntry *targets; int n_targets; target_list = gtk_target_list_new (NULL, 0); gtk_target_list_add_text_targets (target_list, 0); targets = gtk_target_table_new_from_list (target_list, &n_targets); gtk_target_list_unref (target_list); if (!gtk_clipboard_set_with_owner (clipboard, targets, n_targets, ev_view_primary_get_cb, ev_view_primary_clear_cb, G_OBJECT (ev_view))) ev_view_primary_clear_cb (clipboard, ev_view); gtk_target_table_free (targets, n_targets); } else { if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view)) gtk_clipboard_clear (clipboard); } } static void clear_link_selected (EvView *view) { if (view->link_selected) { g_object_unref (view->link_selected); view->link_selected = NULL; } } void ev_view_copy_link_address (EvView *view, EvLinkAction *action) { clear_link_selected (view); ev_view_clipboard_copy (view, ev_link_action_get_uri (action)); view->link_selected = g_object_ref (action); ev_view_update_primary_selection (view); } /*** Cursor operations ***/ static GdkCursor * ev_view_create_invisible_cursor(void) { GdkBitmap *empty; GdkColor black = { 0, 0, 0, 0 }; static char bits[] = { 0x00 }; empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1); return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0); } static void ev_view_set_cursor (EvView *view, EvViewCursor new_cursor) { GdkCursor *cursor = NULL; GdkDisplay *display; GtkWidget *widget; if (view->cursor == new_cursor) { return; } widget = gtk_widget_get_toplevel (GTK_WIDGET (view)); display = gtk_widget_get_display (widget); view->cursor = new_cursor; switch (new_cursor) { case EV_VIEW_CURSOR_NORMAL: gdk_window_set_cursor (view->layout.bin_window, NULL); break; case EV_VIEW_CURSOR_IBEAM: cursor = gdk_cursor_new_for_display (display, GDK_XTERM); break; case EV_VIEW_CURSOR_LINK: cursor = gdk_cursor_new_for_display (display, GDK_HAND2); break; case EV_VIEW_CURSOR_WAIT: cursor = gdk_cursor_new_for_display (display, GDK_WATCH); break; case EV_VIEW_CURSOR_HIDDEN: cursor = ev_view_create_invisible_cursor (); break; case EV_VIEW_CURSOR_DRAG: cursor = gdk_cursor_new_for_display (display, GDK_FLEUR); break; case EV_VIEW_CURSOR_AUTOSCROLL: cursor = gdk_cursor_new_for_display (display, GDK_DOUBLE_ARROW); break; } if (cursor) { gdk_window_set_cursor (view->layout.bin_window, cursor); gdk_cursor_unref (cursor); gdk_flush(); } } void ev_view_hide_cursor (EvView *view) { ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN); } void ev_view_show_cursor (EvView *view) { ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); } static void ev_view_reset_presentation_state (EvView *view) { if (!view->presentation || view->presentation_state == EV_PRESENTATION_NORMAL) return; view->presentation_state = EV_PRESENTATION_NORMAL; gdk_window_set_background (view->layout.bin_window, >K_WIDGET (view)->style->black); gtk_widget_queue_draw (GTK_WIDGET (view)); } gboolean ev_view_next_page (EvView *view) { int page, n_pages; g_return_val_if_fail (EV_IS_VIEW (view), FALSE); if (!view->document) return FALSE; if (view->presentation && (view->presentation_state == EV_PRESENTATION_BLACK || view->presentation_state == EV_PRESENTATION_WHITE)) { ev_view_reset_presentation_state (view); return FALSE; } if (view->animation) { ev_view_transition_animation_cancel (view->animation, view); } ev_view_presentation_transition_stop (view); ev_view_reset_presentation_state (view); page = ev_document_model_get_page (view->model); n_pages = ev_document_get_n_pages (view->document); if (view->dual_page && !view->presentation) page = page + 2; else page = page + 1; if (page < n_pages) { ev_document_model_set_page (view->model, page); return TRUE; } else if (view->presentation && page == n_pages) { view->presentation_state = EV_PRESENTATION_END; gtk_widget_queue_draw (GTK_WIDGET (view)); return TRUE; } else if (view->dual_page && page == n_pages) { ev_document_model_set_page (view->model, page - 1); return TRUE; } else { return FALSE; } } gboolean ev_view_previous_page (EvView *view) { int page; g_return_val_if_fail (EV_IS_VIEW (view), FALSE); if (!view->document) return FALSE; if (view->presentation && view->presentation_state == EV_PRESENTATION_END) { ev_view_reset_presentation_state (view); return TRUE; } if (view->presentation && (view->presentation_state == EV_PRESENTATION_BLACK || view->presentation_state == EV_PRESENTATION_WHITE)) { ev_view_reset_presentation_state (view); return FALSE; } if (view->animation) { ev_view_transition_animation_cancel (view->animation, view); } ev_view_reset_presentation_state (view); page = ev_document_model_get_page (view->model); if (view->dual_page && !view->presentation) page = page - 2; else page = page - 1; if (page >= 0) { ev_document_model_set_page (view->model, page); return TRUE; } else if (ev_view_get_dual_page (view) && page == -1) { ev_document_model_set_page (view->model, 0); return TRUE; } else { return FALSE; } }