/* -*- 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 #include #include #include #include #include #include #include #include "ev-marshal.h" #include "ev-view.h" #include "ev-document-find.h" #include "ev-document-misc.h" #include "ev-debug.h" #include "ev-job-queue.h" #include "ev-page-cache.h" #include "ev-pixbuf-cache.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_STATUS, PROP_FIND_STATUS, PROP_CONTINUOUS, PROP_DUAL_PAGE, PROP_FULL_SCREEN, PROP_PRESENTATION, PROP_SIZING_MODE, }; enum { TARGET_STRING, TARGET_TEXT, TARGET_COMPOUND_TEXT, TARGET_UTF8_STRING, TARGET_TEXT_BUFFER_CONTENTS }; enum { EV_SCROLL_PAGE_FORWARD, EV_SCROLL_PAGE_BACKWARD }; static const GtkTargetEntry targets[] = { { "STRING", 0, TARGET_STRING }, { "TEXT", 0, TARGET_TEXT }, { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT }, { "UTF8_STRING", 0, TARGET_UTF8_STRING }, }; typedef enum { EV_VIEW_CURSOR_NORMAL, EV_VIEW_CURSOR_LINK, EV_VIEW_CURSOR_WAIT, EV_VIEW_CURSOR_HIDDEN } EvViewCursor; #define ZOOM_IN_FACTOR 1.2 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR) #define MIN_SCALE 0.05409 #define MAX_SCALE 6.0 struct _EvView { GtkWidget parent_instance; EvDocument *document; GdkWindow *bin_window; char *status; char *find_status; int scroll_x; int scroll_y; gboolean pressed_button; gboolean has_selection; GdkPoint selection_start; EvRectangle selection; EvViewCursor cursor; GtkAdjustment *hadjustment; GtkAdjustment *vadjustment; EvPageCache *page_cache; EvPixbufCache *pixbuf_cache; gint start_page; gint end_page; gint current_page; EvJobRender *current_job; int find_page; int find_result; int spacing; double scale; GtkBorder border; gboolean show_border; gboolean continuous; gboolean dual_page; gboolean full_screen; gboolean presentation; EvSizingMode sizing_mode; }; struct _EvViewClass { GtkWidgetClass parent_class; void (*set_scroll_adjustments) (EvView *view, GtkAdjustment *hadjustment, GtkAdjustment *vadjustment); void (*scroll_view) (EvView *view, GtkScrollType scroll, gboolean horizontal); }; static void ev_view_set_scroll_adjustments (EvView *view, GtkAdjustment *hadjustment, GtkAdjustment *vadjustment); static void get_bounding_box_size (EvView *view, int *max_width, int *max_height); static void view_update_range_and_current_page (EvView *view); G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET) /*** Helper functions ***/ static void view_update_adjustments (EvView *view) { int old_x = view->scroll_x; int old_y = view->scroll_y; if (view->hadjustment) view->scroll_x = view->hadjustment->value; else view->scroll_x = 0; if (view->vadjustment) view->scroll_y = view->vadjustment->value; else view->scroll_y = 0; if (GTK_WIDGET_REALIZED (view) && (view->scroll_x != old_x || view->scroll_y != old_y)) { gdk_window_move (view->bin_window, - view->scroll_x, - view->scroll_y); // gdk_window_process_updates (view->bin_window, TRUE); } if (view->document) view_update_range_and_current_page (view); } static void view_set_adjustment_values (EvView *view, GtkOrientation orientation) { GtkWidget *widget = GTK_WIDGET (view); GtkAdjustment *adjustment; gboolean value_changed = FALSE; int requisition; int allocation; 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; adjustment->page_size = allocation; adjustment->step_increment = allocation * 0.1; adjustment->page_increment = allocation * 0.9; adjustment->lower = 0; adjustment->upper = MAX (allocation, requisition); if (adjustment->value > adjustment->upper - adjustment->page_size) { adjustment->value = adjustment->upper - adjustment->page_size; value_changed = TRUE; } gtk_adjustment_changed (adjustment); if (value_changed) gtk_adjustment_value_changed (adjustment); } static void view_update_range_and_current_page (EvView *view) { /* 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; gboolean found = FALSE; int i; current_area.x = view->hadjustment->value; current_area.width = view->hadjustment->page_size; current_area.y = view->vadjustment->value; current_area.height = view->vadjustment->page_size; get_bounding_box_size (view, &(page_area.width), &(page_area.height)); page_area.x = view->spacing; page_area.y = view->spacing; for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) { if (gdk_rectangle_intersect (¤t_area, &page_area, &unused)) { if (! found) { view->start_page = i; found = TRUE; } view->end_page = i; } else if (found) { break; } if (view->dual_page) { if (i % 2 == 0) { page_area.x += page_area.width + view->spacing; } else { page_area.x = view->spacing; page_area.y += page_area.height + view->spacing; } } else { page_area.y += page_area.height + view->spacing; } } } else { if (view->dual_page) { if (view->current_page % 2 == 0) { view->start_page = view->current_page; if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) view->end_page = view->start_page + 1; } 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; } } ev_pixbuf_cache_set_page_range (view->pixbuf_cache, view->start_page, view->end_page, view->scale); } /*** Virtual function implementations ***/ static void ev_view_finalize (GObject *object) { EvView *view = EV_VIEW (object); LOG ("Finalize"); g_free (view->status); g_free (view->find_status); G_OBJECT_CLASS (ev_view_parent_class)->finalize (object); } static void ev_view_destroy (GtkObject *object) { EvView *view = EV_VIEW (object); 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; } ev_view_set_scroll_adjustments (view, NULL, NULL); GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object); } static void ev_view_get_offsets (EvView *view, int *x_offset, int *y_offset) { EvDocument *document = view->document; GtkWidget *widget = GTK_WIDGET (view); int width, height, target_width, target_height; g_return_if_fail (EV_IS_DOCUMENT (document)); ev_page_cache_get_size (view->page_cache, view->current_page, view->scale, &width, &height); *x_offset = view->spacing; *y_offset = view->spacing; target_width = width + view->border.left + view->border.right + view->spacing * 2; target_height = height + view->border.top + view->border.bottom + view->spacing * 2; *x_offset += MAX (0, (widget->allocation.width - target_width) / 2); *y_offset += MAX (0, (widget->allocation.height - target_height) / 2); } static void view_rect_to_doc_rect (EvView *view, GdkRectangle *view_rect, EvRectangle *doc_rect) { int x_offset, y_offset; ev_view_get_offsets (view, &x_offset, &y_offset); doc_rect->x1 = (double) (view_rect->x - x_offset) / view->scale; doc_rect->y1 = (double) (view_rect->y - y_offset) / 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_rect_to_view_rect (EvView *view, EvRectangle *doc_rect, GdkRectangle *view_rect) { int x_offset, y_offset; ev_view_get_offsets (view, &x_offset, &y_offset); view_rect->x = floor (doc_rect->x1 * view->scale) + x_offset; view_rect->y = floor (doc_rect->y1 * view->scale) + y_offset; view_rect->width = ceil (doc_rect->x2 * view->scale) + x_offset - view_rect->x; view_rect->height = ceil (doc_rect->y2 * view->scale) + y_offset - view_rect->y; } static void compute_border (EvView *view, int width, int height, GtkBorder *border) { if (view->show_border) { ev_document_misc_get_page_border_size (width, height, border); } else { border->left = 0; border->right = 0; border->top = 0; border->bottom = 0; } } static void get_bounding_box_size (EvView *view, int *max_width, int *max_height) { GtkBorder border; int width, height; if (max_width) { ev_page_cache_get_max_width_size (view->page_cache, view->scale, &width, &height); compute_border (view, width, height, &border); *max_width = width + border.left + border.right; } if (max_height) { ev_page_cache_get_max_height_size (view->page_cache, view->scale, &width, &height); compute_border (view, width, height, &border); *max_height = height + border.top + border.bottom; } } static void ev_view_size_request_continuous_and_dual_page (EvView *view, GtkRequisition *requisition) { int max_width, max_height; int n_rows; get_bounding_box_size (view, &max_width, &max_height); n_rows = (1 + ev_page_cache_get_n_pages (view->page_cache)) / 2; requisition->width = (max_width * 2) + (view->spacing * 3); requisition->height = max_height * n_rows + (view->spacing * (n_rows + 1)); 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, max_height; int n_pages; get_bounding_box_size (view, &max_width, &max_height); n_pages = ev_page_cache_get_n_pages (view->page_cache); requisition->width = max_width + (view->spacing * 2); requisition->height = max_height * n_pages + (view->spacing * (n_pages + 1)); 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_page_cache_get_size (view->page_cache, view->current_page, view->scale, &width, &height); if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) { gint width_2, height_2; ev_page_cache_get_size (view->page_cache, view->current_page + 1, view->scale, &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_page_cache_get_size (view->page_cache, view->current_page, view->scale, &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 (!GTK_WIDGET_REALIZED (widget)) return; 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_and_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); GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation); view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL); view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL); if (GTK_WIDGET_REALIZED (widget)) { gdk_window_resize (view->bin_window, MAX (widget->allocation.width, widget->requisition.width), MAX (widget->allocation.height, widget->requisition.height)); } if (view->document) view_update_range_and_current_page (view); } static void ev_view_realize (GtkWidget *widget) { EvView *view = EV_VIEW (widget); GdkWindowAttr attributes; GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED); attributes.window_type = GDK_WINDOW_CHILD; attributes.wclass = GDK_INPUT_OUTPUT; attributes.visual = gtk_widget_get_visual (widget); attributes.colormap = gtk_widget_get_colormap (widget); attributes.x = widget->allocation.x; attributes.y = widget->allocation.y; attributes.width = widget->allocation.width; attributes.height = widget->allocation.height; attributes.event_mask = 0; widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, GDK_WA_X | GDK_WA_Y | GDK_WA_COLORMAP | GDK_WA_VISUAL); gdk_window_set_user_data (widget->window, widget); widget->style = gtk_style_attach (widget->style, widget->window); gdk_window_set_background (widget->window, &widget->style->mid[widget->state]); attributes.x = 0; attributes.y = 0; attributes.width = MAX (widget->allocation.width, widget->requisition.width); attributes.height = MAX (widget->allocation.height, widget->requisition.height); attributes.event_mask = GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_SCROLL_MASK | GDK_KEY_PRESS_MASK | GDK_POINTER_MOTION_MASK | GDK_LEAVE_NOTIFY_MASK; view->bin_window = gdk_window_new (widget->window, &attributes, GDK_WA_X | GDK_WA_Y | GDK_WA_COLORMAP | GDK_WA_VISUAL); gdk_window_set_user_data (view->bin_window, widget); gdk_window_show (view->bin_window); widget->style = gtk_style_attach (widget->style, view->bin_window); gdk_window_set_background (view->bin_window, &widget->style->mid[widget->state]); if (view->document) { /* We can't get page size without a target, so we have to * queue a size request at realization. Could be fixed * with EvDocument changes to allow setting a GdkScreen * without setting a target. */ gtk_widget_queue_resize (widget); } } static void ev_view_unrealize (GtkWidget *widget) { EvView *view = EV_VIEW (widget); gdk_window_set_user_data (view->bin_window, NULL); gdk_window_destroy (view->bin_window); view->bin_window = NULL; GTK_WIDGET_CLASS (ev_view_parent_class)->unrealize (widget); } #if 0 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, rect->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, rect->y, rect->width - 1, rect->height - 1); g_object_unref (gc); gdk_color_free (fill_color_gdk); } static void highlight_find_results (EvView *view) { EvDocumentFind *find; int i, results = 0; g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document)); find = EV_DOCUMENT_FIND (view->document); results = ev_document_find_get_n_results (find, view->current_page); for (i = 0; i < results; i++) { EvRectangle rectangle; GdkRectangle view_rectangle; guchar alpha; alpha = (i == view->find_result) ? 0x90 : 0x20; ev_document_find_get_result (find, view->current_page, i, &rectangle); doc_rect_to_view_rect (view, &rectangle, &view_rectangle); draw_rubberband (GTK_WIDGET (view), view->bin_window, &view_rectangle, alpha); } } #endif static gboolean get_page_extents (EvView *view, gint page, GdkRectangle *page_area, GtkBorder *border) { GtkWidget *widget; int width, height; widget = GTK_WIDGET (view); /* Quick sanity check */ if (view->presentation) { if (view->current_page != page) return FALSE; } else if (view->continuous) { if (page < view->start_page || page > view->end_page) return FALSE; } else if (view->dual_page) { if (ABS (page - view->current_page) > 1) return FALSE; } else { if (view->current_page != page) return FALSE; } /* Get the size of the page */ ev_page_cache_get_size (view->page_cache, page, view->scale, &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, max_height; gint x, y; get_bounding_box_size (view, &max_width, &max_height); /* Get the location of the bounding box */ if (view->dual_page) { x = view->spacing + (page % 2) * (max_width + view->spacing); y = view->spacing + (page / 2) * (max_height + view->spacing); x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3))/2; } else { x = view->spacing; y = view->spacing + page * (max_height + view->spacing); x = x + MAX (0, widget->allocation.width - (max_width + view->spacing * 2))/2; } 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 ^ 1; /* First, we get the bounding box of the two pages */ if (other_page < ev_page_cache_get_n_pages (view->page_cache)) { ev_page_cache_get_size (view->page_cache, page + 1, view->scale, &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 == 0) 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 + view->spacing * 2))/2; y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2; } page_area->x = x; page_area->y = y; } return TRUE; } static void draw_one_page (EvView *view, gint page, GdkRectangle *page_area, GtkBorder *border, GdkRectangle *expose_area) { gint width, height; GdkPixbuf *scaled_image; GdkPixbuf *current_pixbuf; GdkRectangle overlap; GdkRectangle real_page_area; g_assert (view->document); if (! gdk_rectangle_intersect (page_area, expose_area, &overlap)) return; ev_page_cache_get_size (view->page_cache, page, view->scale, &width, &height); if (view->show_border) ev_document_misc_paint_one_page (view->bin_window, GTK_WIDGET (view), page_area, border); /* 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); if (! gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) return; current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page); if (current_pixbuf == NULL) scaled_image = NULL; else if (width == gdk_pixbuf_get_width (current_pixbuf) && height == gdk_pixbuf_get_height (current_pixbuf)) scaled_image = g_object_ref (current_pixbuf); else scaled_image = gdk_pixbuf_scale_simple (current_pixbuf, width, height, GDK_INTERP_NEAREST); if (scaled_image) { gdk_draw_pixbuf (view->bin_window, GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL], scaled_image, overlap.x - real_page_area.x, overlap.y - real_page_area.y, overlap.x, overlap.y, overlap.width, overlap.height, GDK_RGB_DITHER_NORMAL, 0, 0); g_object_unref (scaled_image); } } static void ev_view_bin_expose (EvView *view, GdkEventExpose *event) { int i; if (view->document == NULL) return; for (i = view->start_page; i <= view->end_page; i++) { GdkRectangle page_area; GtkBorder border; if (! get_page_extents (view, i, &page_area, &border)) continue; draw_one_page (view, i, &page_area, &border, &(event->area)); } #if 0 if (EV_IS_DOCUMENT_FIND (view->document)) { highlight_find_results (view); } if (view->has_selection) { GdkRectangle rubberband; doc_rect_to_view_rect (view, &view->selection, &rubberband); if (rubberband.width > 0 && rubberband.height > 0) { draw_rubberband (GTK_WIDGET (view), view->bin_window, &rubberband, 0x40); } } #endif } static gboolean ev_view_expose_event (GtkWidget *widget, GdkEventExpose *event) { EvView *view = EV_VIEW (widget); if (event->window == view->bin_window) ev_view_bin_expose (view, event); else return GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event (widget, event); return FALSE; } void ev_view_select_all (EvView *ev_view) { GtkWidget *widget = GTK_WIDGET (ev_view); GdkRectangle selection; int width, height; int x_offset, y_offset; g_return_if_fail (EV_IS_VIEW (ev_view)); ev_view_get_offsets (ev_view, &x_offset, &y_offset); ev_page_cache_get_size (ev_view->page_cache, ev_view->current_page, ev_view->scale, &width, &height); ev_view->has_selection = TRUE; selection.x = x_offset + ev_view->border.left; selection.y = y_offset + ev_view->border.top; selection.width = width; selection.height = height; view_rect_to_doc_rect (ev_view, &selection, &ev_view->selection); gtk_widget_queue_draw (widget); } void ev_view_copy (EvView *ev_view) { GtkClipboard *clipboard; char *text; if (!ev_document_can_get_text (ev_view->document)) { return; } ev_document_doc_mutex_lock (); text = ev_document_get_text (ev_view->document, ev_view->current_page, &ev_view->selection); ev_document_doc_mutex_unlock (); clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view), GDK_SELECTION_CLIPBOARD); gtk_clipboard_set_text (clipboard, text, -1); g_free (text); } void ev_view_set_show_border (EvView *view, gboolean show_border) { g_return_if_fail (EV_IS_VIEW (view)); view->show_border = show_border; gtk_widget_queue_resize (GTK_WIDGET (view)); } static void ev_view_primary_get_cb (GtkClipboard *clipboard, GtkSelectionData *selection_data, guint info, gpointer data) { EvView *ev_view = EV_VIEW (data); char *text; if (!ev_document_can_get_text (ev_view->document)) { return; } ev_document_doc_mutex_lock (); text = ev_document_get_text (ev_view->document, ev_view->current_page, &ev_view->selection); ev_document_doc_mutex_unlock (); gtk_selection_data_set_text (selection_data, text, -1); } static void ev_view_primary_clear_cb (GtkClipboard *clipboard, gpointer data) { EvView *ev_view = EV_VIEW (data); ev_view->has_selection = FALSE; } 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->has_selection) { if (!gtk_clipboard_set_with_owner (clipboard, targets, G_N_ELEMENTS (targets), ev_view_primary_get_cb, ev_view_primary_clear_cb, G_OBJECT (ev_view))) ev_view_primary_clear_cb (clipboard, ev_view); } else { if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view)) gtk_clipboard_clear (clipboard); } } static gboolean ev_view_button_press_event (GtkWidget *widget, GdkEventButton *event) { EvView *view = EV_VIEW (widget); if (!GTK_WIDGET_HAS_FOCUS (widget)) { gtk_widget_grab_focus (widget); } view->pressed_button = event->button; switch (event->button) { case 1: if (view->has_selection) { view->has_selection = FALSE; gtk_widget_queue_draw (widget); } view->selection_start.x = event->x; view->selection_start.y = event->y; break; } return TRUE; } static char * status_message_from_link (EvView *view, EvLink *link) { EvLinkType type; char *msg = NULL; char *page_label; type = ev_link_get_link_type (link); switch (type) { case EV_LINK_TYPE_TITLE: if (ev_link_get_title (link)) msg = g_strdup (ev_link_get_title (link)); break; case EV_LINK_TYPE_PAGE: page_label = ev_page_cache_get_page_label (view->page_cache, ev_link_get_page (link)); msg = g_strdup_printf (_("Go to page %s"), page_label); g_free (page_label); break; case EV_LINK_TYPE_EXTERNAL_URI: msg = g_strdup (ev_link_get_uri (link)); break; default: break; } return msg; } static void ev_view_set_status (EvView *view, const char *message) { g_return_if_fail (EV_IS_VIEW (view)); if (message != view->status) { g_free (view->status); view->status = g_strdup (message); g_object_notify (G_OBJECT (view), "status"); } } static void ev_view_set_find_status (EvView *view, const char *message) { g_return_if_fail (EV_IS_VIEW (view)); g_free (view->find_status); view->find_status = g_strdup (message); g_object_notify (G_OBJECT (view), "find-status"); } 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 (widget->window, NULL); 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; } if (cursor) { gdk_window_set_cursor (widget->window, cursor); gdk_cursor_unref (cursor); gdk_flush(); } } static void find_page_at_location (EvView *view, gdouble x, gdouble y, gint *page, gint *x_offset, gint *y_offset) { gint width, height; ev_page_cache_get_size (view->page_cache, view->current_page, view->scale, &width, &height); x -= (view->border.left + view->spacing); y -= (view->border.top + view->spacing); if ((x < 0) || (y < 0) || (x >= width) || (y >= height)) { *page = -1; return; } *page = view->current_page; *x_offset = (gint) x; *y_offset = (gint) y; } static EvLink * get_link_at_location (EvView *view, gdouble x, gdouble y) { gint page; gint x_offset, y_offset; GList *link_mapping; find_page_at_location (view, x, y, &page, &x_offset, &y_offset); if (page == -1) return NULL; link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page); return ev_link_mapping_find (link_mapping, x_offset /view->scale, y_offset /view->scale); } static gboolean ev_view_motion_notify_event (GtkWidget *widget, GdkEventMotion *event) { EvView *view = EV_VIEW (widget); if (view->pressed_button > 0) { GdkRectangle selection; view->has_selection = TRUE; selection.x = MIN (view->selection_start.x, event->x); selection.y = MIN (view->selection_start.y, event->y); selection.width = ABS (view->selection_start.x - event->x) + 1; selection.height = ABS (view->selection_start.y - event->y) + 1; view_rect_to_doc_rect (view, &selection, &view->selection); gtk_widget_queue_draw (widget); } else if (view->document) { EvLink *link; link = get_link_at_location (view, event->x, event->y); if (link) { char *msg; msg = status_message_from_link (view, link); ev_view_set_status (view, msg); ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK); g_free (msg); } else { ev_view_set_status (view, NULL); if (view->cursor == EV_VIEW_CURSOR_LINK) { ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); } } } return TRUE; } /* FIXME: standardize this sometime */ static void go_to_link (EvView *view, EvLink *link) { EvLinkType type; const char *uri; int page; type = ev_link_get_link_type (link); switch (type) { case EV_LINK_TYPE_TITLE: break; case EV_LINK_TYPE_PAGE: page = ev_link_get_page (link); ev_page_cache_set_current_page (view->page_cache, page); break; case EV_LINK_TYPE_EXTERNAL_URI: uri = ev_link_get_uri (link); gnome_vfs_url_show (uri); break; } } static gboolean ev_view_button_release_event (GtkWidget *widget, GdkEventButton *event) { EvView *view = EV_VIEW (widget); view->pressed_button = -1; if (view->has_selection) { ev_view_update_primary_selection (view); } else if (view->document) { EvLink *link; link = get_link_at_location (view, event->x, event->y); if (link) { go_to_link (view, link); } } return FALSE; } static void on_adjustment_value_changed (GtkAdjustment *adjustment, EvView *view) { view_update_adjustments (view); } 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 (EvView *view, GtkAdjustment *hadjustment, GtkAdjustment *vadjustment) { set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment); set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment); view_update_adjustments (view); } static void add_scroll_binding_keypad (GtkBindingSet *binding_set, guint keyval, GtkScrollType scroll, gboolean horizontal) { guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left; gtk_binding_entry_add_signal (binding_set, keyval, 0, "scroll_view", 2, GTK_TYPE_SCROLL_TYPE, scroll, G_TYPE_BOOLEAN, horizontal); gtk_binding_entry_add_signal (binding_set, keypad_keyval, 0, "scroll_view", 2, GTK_TYPE_SCROLL_TYPE, scroll, G_TYPE_BOOLEAN, horizontal); } static void add_scroll_binding_shifted (GtkBindingSet *binding_set, guint keyval, GtkScrollType scroll_normal, GtkScrollType scroll_shifted, gboolean horizontal) { gtk_binding_entry_add_signal (binding_set, keyval, 0, "scroll_view", 2, GTK_TYPE_SCROLL_TYPE, scroll_normal, G_TYPE_BOOLEAN, horizontal); gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK, "scroll_view", 2, GTK_TYPE_SCROLL_TYPE, scroll_shifted, G_TYPE_BOOLEAN, horizontal); } static void ev_view_jump (EvView *view, GtkScrollType scroll) { GtkAdjustment *adjustment; double value, increment; gboolean first_page = FALSE; gboolean last_page = FALSE; /* Assign values for increment and vertical adjustment */ adjustment = 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_page_cache_get_n_pages (view->page_cache) - 1) last_page = TRUE; switch (scroll) { case EV_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_page_cache_set_current_page (view->page_cache, view->current_page - 1); /* Jump to the top */ } else { value = MAX (value - increment, adjustment->lower); } break; case EV_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_page_cache_set_current_page (view->page_cache, view->current_page + 1); /* Jump to the bottom */ } else { value = MIN (value + increment, adjustment->upper - adjustment->page_size); } break; default: break; } gtk_adjustment_set_value (adjustment, value); } static void ev_view_scroll_view (EvView *view, GtkScrollType scroll, gboolean horizontal) { if (scroll == GTK_SCROLL_PAGE_BACKWARD) { ev_page_cache_prev_page (view->page_cache); } else if (scroll == GTK_SCROLL_PAGE_FORWARD) { ev_page_cache_next_page (view->page_cache); } else if (scroll == EV_SCROLL_PAGE_BACKWARD || scroll == EV_SCROLL_PAGE_FORWARD) { ev_view_jump (view, scroll); } else { GtkAdjustment *adjustment; double value; if (horizontal) { adjustment = view->hadjustment; } else { adjustment = view->vadjustment; } value = adjustment->value; switch (scroll) { case GTK_SCROLL_STEP_BACKWARD: value -= adjustment->step_increment; break; case GTK_SCROLL_STEP_FORWARD: value += adjustment->step_increment; break; default: break; } value = CLAMP (value, adjustment->lower, adjustment->upper - adjustment->page_size); gtk_adjustment_set_value (adjustment, value); } } 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_FULL_SCREEN: ev_view_set_full_screen (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; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); } } 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_STATUS: g_value_set_string (value, view->status); break; case PROP_FIND_STATUS: g_value_set_string (value, view->status); break; 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_FULL_SCREEN: g_value_set_boolean (value, view->full_screen); 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; 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); 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->size_request = ev_view_size_request; widget_class->size_allocate = ev_view_size_allocate; widget_class->realize = ev_view_realize; widget_class->unrealize = ev_view_unrealize; gtk_object_class->destroy = ev_view_destroy; class->set_scroll_adjustments = ev_view_set_scroll_adjustments; class->scroll_view = ev_view_scroll_view; widget_class->set_scroll_adjustments_signal = g_signal_new ("set-scroll-adjustments", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments), NULL, NULL, ev_marshal_VOID__OBJECT_OBJECT, G_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT); g_signal_new ("scroll_view", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EvViewClass, scroll_view), NULL, NULL, ev_marshal_VOID__ENUM_BOOLEAN, G_TYPE_NONE, 2, GTK_TYPE_SCROLL_TYPE, G_TYPE_BOOLEAN); g_object_class_install_property (object_class, PROP_STATUS, g_param_spec_string ("status", "Status Message", "The status message", NULL, G_PARAM_READABLE)); g_object_class_install_property (object_class, PROP_FIND_STATUS, g_param_spec_string ("find-status", "Find Status Message", "The find status message", NULL, G_PARAM_READABLE)); 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_FULL_SCREEN, g_param_spec_boolean ("full-screen", "Full Screen", "Draw page in a full-screen 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)); binding_set = gtk_binding_set_by_class (class); add_scroll_binding_keypad (binding_set, GDK_Left, GTK_SCROLL_STEP_BACKWARD, TRUE); add_scroll_binding_keypad (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD, TRUE); add_scroll_binding_keypad (binding_set, GDK_Up, GTK_SCROLL_STEP_BACKWARD, FALSE); add_scroll_binding_keypad (binding_set, GDK_Down, GTK_SCROLL_STEP_FORWARD, FALSE); add_scroll_binding_keypad (binding_set, GDK_Page_Up, GTK_SCROLL_PAGE_BACKWARD, FALSE); add_scroll_binding_keypad (binding_set, GDK_Page_Down, GTK_SCROLL_PAGE_FORWARD, FALSE); add_scroll_binding_shifted (binding_set, GDK_space, EV_SCROLL_PAGE_FORWARD, EV_SCROLL_PAGE_BACKWARD, FALSE); add_scroll_binding_shifted (binding_set, GDK_BackSpace, EV_SCROLL_PAGE_BACKWARD, EV_SCROLL_PAGE_FORWARD, FALSE); } void ev_view_set_spacing (EvView *view, int spacing) { g_return_if_fail (EV_IS_VIEW (view)); view->spacing = spacing; if (view->document) { gtk_widget_queue_resize (GTK_WIDGET (view)); } } static void ev_view_init (EvView *view) { GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS); view->spacing = 0; view->scale = 1.0; view->current_page = 0; view->pressed_button = -1; view->cursor = EV_VIEW_CURSOR_NORMAL; view->show_border = TRUE; view->continuous = TRUE; view->dual_page = FALSE; view->presentation = FALSE; view->full_screen = FALSE; view->sizing_mode = EV_SIZING_FIT_WIDTH; } static void update_find_status_message (EvView *view) { char *message; // ev_document_doc_mutex_lock (); if (view->current_page == view->find_page) { int results; // ev_document_doc_mutex_lock (); results = ev_document_find_get_n_results (EV_DOCUMENT_FIND (view->document), view->current_page); // ev_document_doc_mutex_unlock (); /* TRANS: Sometimes this could be better translated as "%d hit(s) on this page". Therefore this string contains plural cases. */ message = g_strdup_printf (ngettext ("%d found on this page", "%d found on this page", results), results); } else { double percent; ev_document_doc_mutex_lock (); percent = ev_document_find_get_progress (EV_DOCUMENT_FIND (view->document)); ev_document_doc_mutex_unlock (); if (percent >= (1.0 - 1e-10)) { message = g_strdup (_("Not found")); } else { message = g_strdup_printf (_("%3d%% remaining to search"), (int) ((1.0 - percent) * 100)); } } // ev_document_doc_mutex_unlock (); ev_view_set_find_status (view, message); // g_free (message); } #define MARGIN 5 static void ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect) { GtkWidget *widget = GTK_WIDGET (view); GtkAdjustment *adjustment; int value; 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); } } static void jump_to_find_result (EvView *view) { EvDocumentFind *find = EV_DOCUMENT_FIND (view->document); EvRectangle rect; GdkRectangle view_rect; int n_results; ev_document_doc_mutex_lock (); n_results = ev_document_find_get_n_results (find, view->current_page); ev_document_doc_mutex_unlock (); if (n_results > view->find_result) { ev_document_doc_mutex_lock (); ev_document_find_get_result (find, view->current_page, view->find_result, &rect); ev_document_doc_mutex_unlock (); doc_rect_to_view_rect (view, &rect, &view_rect); ensure_rectangle_is_visible (view, &view_rect); } } static void jump_to_find_page (EvView *view) { int n_pages, i; n_pages = ev_page_cache_get_n_pages (view->page_cache); for (i = 0; i < n_pages; i++) { int has_results; int page; page = i + view->find_page; if (page >= n_pages) { page = page - n_pages; } // ev_document_doc_mutex_lock (); has_results = ev_document_find_page_has_results (EV_DOCUMENT_FIND (view->document), page); if (has_results == -1) { view->find_page = page; break; } else if (has_results == 1) { ev_page_cache_set_current_page (view->page_cache, page); jump_to_find_result (view); break; } } } static void find_changed_cb (EvDocument *document, int page, EvView *view) { jump_to_find_page (view); jump_to_find_result (view); update_find_status_message (view); if (view->current_page == page) gtk_widget_queue_draw (GTK_WIDGET (view)); } /*** Public API ***/ GtkWidget* ev_view_new (void) { GtkWidget *view; view = g_object_new (EV_TYPE_VIEW, NULL); return view; } static void job_finished_cb (EvPixbufCache *pixbuf_cache, EvView *view) { gtk_widget_queue_draw (GTK_WIDGET (view)); } static void page_changed_cb (EvPageCache *page_cache, int new_page, EvView *view) { int old_page = view->current_page; int old_width, old_height; int new_width, new_height; if (old_page == new_page) return; ev_page_cache_get_size (page_cache, old_page, view->scale, &old_width, &old_height); view->current_page = new_page; view->has_selection = FALSE; ev_page_cache_get_size (page_cache, new_page, view->scale, &new_width, &new_height); compute_border (view, new_width, new_height, &(view->border)); if (new_width != old_width || new_height != old_height) gtk_widget_queue_resize (GTK_WIDGET (view)); else gtk_widget_queue_draw (GTK_WIDGET (view)); gtk_adjustment_set_value (view->vadjustment, view->vadjustment->lower); if (EV_IS_DOCUMENT_FIND (view->document)) { view->find_page = new_page; view->find_result = 0; update_find_status_message (view); } view_update_range_and_current_page (view); } void ev_view_set_document (EvView *view, EvDocument *document) { g_return_if_fail (EV_IS_VIEW (view)); if (document != view->document) { if (view->document) { g_signal_handlers_disconnect_by_func (view->document, find_changed_cb, view); g_object_unref (view->document); view->page_cache = NULL; } view->document = document; view->find_page = 0; view->find_result = 0; if (view->document) { g_object_ref (view->document); if (EV_IS_DOCUMENT_FIND (view->document)) { g_signal_connect (view->document, "find_changed", G_CALLBACK (find_changed_cb), view); } view->page_cache = ev_document_get_page_cache (view->document); g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view); view->pixbuf_cache = ev_pixbuf_cache_new (view->document); g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view); } gtk_widget_queue_resize (GTK_WIDGET (view)); } } #define EPSILON 0.0000001 static void ev_view_zoom (EvView *view, double factor, gboolean relative) { double scale; if (relative) scale = view->scale * factor; else scale = factor; scale = CLAMP (scale, MIN_SCALE, MAX_SCALE); if (ABS (view->scale - scale) < EPSILON) return; view->scale = scale; gtk_widget_queue_resize (GTK_WIDGET (view)); } void ev_view_set_continuous (EvView *view, gboolean continuous) { g_return_if_fail (EV_IS_VIEW (view)); continuous = continuous != FALSE; if (view->continuous != continuous) { view->continuous = continuous; gtk_widget_queue_resize (GTK_WIDGET (view)); } g_object_notify (G_OBJECT (view), "continuous"); } void ev_view_set_dual_page (EvView *view, gboolean dual_page) { g_return_if_fail (EV_IS_VIEW (view)); dual_page = dual_page != FALSE; if (view->dual_page == dual_page) return; view->dual_page = dual_page; /* 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)); g_object_notify (G_OBJECT (view), "dual-page"); } void ev_view_set_full_screen (EvView *view, gboolean full_screen) { g_return_if_fail (EV_IS_VIEW (view)); full_screen = full_screen != FALSE; if (view->full_screen != full_screen) { view->full_screen = full_screen; gtk_widget_queue_resize (GTK_WIDGET (view)); } g_object_notify (G_OBJECT (view), "full-screen"); } void ev_view_set_presentation (EvView *view, gboolean presentation) { g_return_if_fail (EV_IS_VIEW (view)); presentation = presentation != FALSE; if (view->presentation != presentation) { view->presentation = presentation; gtk_widget_queue_resize (GTK_WIDGET (view)); } g_object_notify (G_OBJECT (view), "presentation"); } void ev_view_set_sizing_mode (EvView *view, EvSizingMode sizing_mode) { g_return_if_fail (EV_IS_VIEW (view)); if (view->sizing_mode != sizing_mode) { view->sizing_mode = sizing_mode; gtk_widget_queue_resize (GTK_WIDGET (view)); } g_object_notify (G_OBJECT (view), "sizing-mode"); } gboolean ev_view_can_zoom_in (EvView *view) { return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE; } gboolean ev_view_can_zoom_out (EvView *view) { return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE; } void ev_view_zoom_in (EvView *view) { g_return_if_fail (view->sizing_mode == EV_SIZING_FREE); ev_view_zoom (view, ZOOM_IN_FACTOR, TRUE); } void ev_view_zoom_out (EvView *view) { g_return_if_fail (view->sizing_mode == EV_SIZING_FREE); ev_view_zoom (view, ZOOM_OUT_FACTOR, TRUE); } static double zoom_for_size_fit_width (int doc_width, int doc_height, int target_width, int target_height, int vsb_width) { double scale; scale = (double)target_width / doc_width; if (doc_height * scale > target_height) scale = (double) (target_width - vsb_width) / doc_width; return scale; } static double zoom_for_size_best_fit (int doc_width, int doc_height, int target_width, int target_height, int vsb_width, int hsb_width) { 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 - vsb_width) / doc_width; if (doc_width * h_scale > target_width) h_scale = (double) (target_height - hsb_width) / doc_height; return MIN (w_scale, h_scale); } static void ev_view_zoom_for_size_continuous_and_dual_page (EvView *view, int width, int height, int vsb_width, int hsb_height) { int doc_width, doc_height; GtkBorder border; gdouble scale; ev_page_cache_get_max_width_size (view->page_cache, 1.0, &doc_width, NULL); ev_page_cache_get_max_height_size (view->page_cache, 1.0, NULL, &doc_height); compute_border (view, doc_width, doc_height, &border); doc_width = doc_width * 2; width -= ((border.left + border.right)* 2 + 3 * view->spacing); height -= (border.top + border.bottom + 2 * view->spacing); /* FIXME: We really need to calculat the overall height here, not the * page height. We assume there's always a vertical scrollbar for * now. We need to fix this. */ if (view->sizing_mode == EV_SIZING_FIT_WIDTH) scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0); else if (view->sizing_mode == EV_SIZING_BEST_FIT) scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height); else g_assert_not_reached (); ev_view_zoom (view, scale, FALSE); } static void ev_view_zoom_for_size_continuous (EvView *view, int width, int height, int vsb_width, int hsb_height) { int doc_width, doc_height; GtkBorder border; gdouble scale; ev_page_cache_get_max_width_size (view->page_cache, 1.0, &doc_width, NULL); ev_page_cache_get_max_height_size (view->page_cache, 1.0, NULL, &doc_height); compute_border (view, doc_width, doc_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, vsb_width); else if (view->sizing_mode == EV_SIZING_BEST_FIT) scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height); else g_assert_not_reached (); ev_view_zoom (view, scale, FALSE); } static void ev_view_zoom_for_size_dual_page (EvView *view, int width, int height, int vsb_width, int hsb_height) { GtkBorder border; gint doc_width, doc_height; gdouble scale; gint other_page; other_page = view->current_page ^ 1; /* Find the largest of the two. */ ev_page_cache_get_size (view->page_cache, view->current_page, 1.0, &doc_width, &doc_height); if (other_page < ev_page_cache_get_n_pages (view->page_cache)) { gint width_2, height_2; ev_page_cache_get_size (view->page_cache, other_page, 1.0, &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, doc_width, doc_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, vsb_width); else if (view->sizing_mode == EV_SIZING_BEST_FIT) scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height); else g_assert_not_reached (); ev_view_zoom (view, scale, FALSE); } static void ev_view_zoom_for_size_single_page (EvView *view, int width, int height, int vsb_width, int hsb_height) { int doc_width, doc_height; GtkBorder border; gdouble scale; ev_page_cache_get_size (view->page_cache, view->current_page, 1.0, &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, vsb_width); else if (view->sizing_mode == EV_SIZING_BEST_FIT) scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height); else g_assert_not_reached (); ev_view_zoom (view, scale, FALSE); } void ev_view_zoom_normal (EvView *view) { ev_view_zoom (view, 1.0, FALSE); } void ev_view_set_zoom_for_size (EvView *view, int width, int height, int vsb_width, int hsb_height) { 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->continuous && view->dual_page) ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height); else if (view->continuous) ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height); else if (view->dual_page) ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height); else ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height); } const char * ev_view_get_status (EvView *view) { g_return_val_if_fail (EV_IS_VIEW (view), NULL); return view->status; } const char * ev_view_get_find_status (EvView *view) { g_return_val_if_fail (EV_IS_VIEW (view), NULL); return view->find_status; } gboolean ev_view_can_find_next (EvView *view) { int n_results = 0; if (EV_IS_DOCUMENT_FIND (view->document)) { EvDocumentFind *find = EV_DOCUMENT_FIND (view->document); ev_document_doc_mutex_lock (); n_results = ev_document_find_get_n_results (find, view->current_page); ev_document_doc_mutex_unlock (); } return n_results > 0; } void ev_view_find_next (EvView *view) { EvPageCache *page_cache; int n_results, n_pages; EvDocumentFind *find = EV_DOCUMENT_FIND (view->document); page_cache = ev_document_get_page_cache (view->document); ev_document_doc_mutex_lock (); n_results = ev_document_find_get_n_results (find, view->current_page); ev_document_doc_mutex_unlock (); n_pages = ev_page_cache_get_n_pages (page_cache); view->find_result++; if (view->find_result >= n_results) { view->find_result = 0; view->find_page++; if (view->find_page >= n_pages) { view->find_page = 0; } jump_to_find_page (view); } else { jump_to_find_result (view); gtk_widget_queue_draw (GTK_WIDGET (view)); } } void ev_view_find_previous (EvView *view) { int n_results, n_pages; EvDocumentFind *find = EV_DOCUMENT_FIND (view->document); EvPageCache *page_cache; page_cache = ev_document_get_page_cache (view->document); ev_document_doc_mutex_lock (); n_results = ev_document_find_get_n_results (find, view->current_page); ev_document_doc_mutex_unlock (); n_pages = ev_page_cache_get_n_pages (page_cache); view->find_result--; if (view->find_result < 0) { view->find_result = 0; view->find_page--; if (view->find_page < 0) { view->find_page = n_pages - 1; } jump_to_find_page (view); } else { jump_to_find_result (view); gtk_widget_queue_draw (GTK_WIDGET (view)); } } 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); } GType ev_sizing_mode_get_type (void) { static GType etype = 0; if (etype == 0) { static const GEnumValue values[] = { { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" }, { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" }, { EV_SIZING_FREE, "EV_SIZING_FREE", "free" }, { 0, NULL, NULL } }; etype = g_enum_register_static ("EvSizingMode", values); } return etype; }