diff options
Diffstat (limited to 'cut-n-paste/zoom-control/ephy-zoom-control.c')
| -rw-r--r-- | cut-n-paste/zoom-control/ephy-zoom-control.c | 354 |
1 files changed, 354 insertions, 0 deletions
diff --git a/cut-n-paste/zoom-control/ephy-zoom-control.c b/cut-n-paste/zoom-control/ephy-zoom-control.c new file mode 100644 index 0000000..d3b7e57 --- /dev/null +++ b/cut-n-paste/zoom-control/ephy-zoom-control.c @@ -0,0 +1,354 @@ +/* + * Copyright (C) 2003, 2004 Christian Persch + * + * Modified 2005 by James Bowes for use in evince. + * + * This program 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, or (at your option) + * any later version. + * + * This program 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. + * + * $Id$ + */ + +#include "config.h" + +#include "ephy-zoom-control.h" +#include "ephy-zoom.h" +#include "ev-debug.h" + +#include <gtk/gtk.h> +#include <gtk/gtkcombobox.h> +#include <gtk/gtktooltips.h> +#include <glib/gi18n.h> + +#define EPHY_ZOOM_CONTROL_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EPHY_TYPE_ZOOM_CONTROL, EphyZoomControlPrivate)) + +struct _EphyZoomControlPrivate +{ + GtkComboBox *combo; + float zoom; + guint handler_id; +}; + +enum +{ + COL_TEXT, + COL_IS_SEP +}; + +enum +{ + PROP_0, + PROP_ZOOM +}; + +enum +{ + ZOOM_TO_LEVEL_SIGNAL, + LAST_SIGNAL +}; + +static guint signals[LAST_SIGNAL]; + +static GObjectClass *parent_class = NULL; + +static void ephy_zoom_control_class_init (EphyZoomControlClass *klass); +static void ephy_zoom_control_init (EphyZoomControl *control); +static void ephy_zoom_control_finalize (GObject *o); + +GType +ephy_zoom_control_get_type (void) +{ + static GType type = 0; + + if (G_UNLIKELY (type == 0)) + { + static const GTypeInfo our_info = + { + sizeof (EphyZoomControlClass), + NULL, /* base_init */ + NULL, /* base_finalize */ + (GClassInitFunc) ephy_zoom_control_class_init, + NULL, + NULL, /* class_data */ + sizeof (EphyZoomControl), + 0, /* n_preallocs */ + (GInstanceInitFunc) ephy_zoom_control_init, + }; + + type = g_type_register_static (GTK_TYPE_TOOL_ITEM, + "EphyZoomControl", + &our_info, 0); + } + + return type; +} + +static void +combo_changed_cb (GtkComboBox *combo, EphyZoomControl *control) +{ + gint index; + float zoom; + + index = gtk_combo_box_get_active (combo); + zoom = zoom_levels[index].level; + + if (zoom != control->priv->zoom) + { + g_signal_emit (control, signals[ZOOM_TO_LEVEL_SIGNAL], 0, zoom); + } +} + +static void +sync_zoom_cb (EphyZoomControl *control, GParamSpec *pspec, gpointer data) +{ + EphyZoomControlPrivate *p = control->priv; + guint index; + + index = ephy_zoom_get_zoom_level_index (p->zoom); + + g_signal_handler_block (p->combo, p->handler_id); + gtk_combo_box_set_active (p->combo, index); + g_signal_handler_unblock (p->combo, p->handler_id); +} + +static gboolean +row_is_separator (GtkTreeModel *model, + GtkTreeIter *iter, + gpointer data) +{ + gboolean is_sep; + gtk_tree_model_get (model, iter, COL_IS_SEP, &is_sep, -1); + return is_sep; +} + +static void +ephy_zoom_control_init (EphyZoomControl *control) +{ + EphyZoomControlPrivate *p; + GtkWidget *vbox; + GtkCellRenderer *renderer; + GtkListStore *store; + GtkTreeIter iter; + guint i; + + p = EPHY_ZOOM_CONTROL_GET_PRIVATE (control); + control->priv = p; + + p->zoom = 1.0; + + store = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_BOOLEAN); + + for (i = 0; i < n_zoom_levels; i++) + { + gtk_list_store_append (store, &iter); + gtk_list_store_set (store, &iter, + COL_TEXT, zoom_levels[i].name, + COL_IS_SEP, zoom_levels[i].name == NULL, + -1); + } + + p->combo = GTK_COMBO_BOX (gtk_combo_box_new_with_model (GTK_TREE_MODEL (store))); + g_object_unref (store); + + renderer = gtk_cell_renderer_text_new (); + gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (p->combo), renderer, TRUE); + gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (p->combo), renderer, + "text", COL_TEXT, NULL); + gtk_combo_box_set_row_separator_func (p->combo, + (GtkTreeViewRowSeparatorFunc) row_is_separator, + NULL, NULL); + + gtk_combo_box_set_focus_on_click (p->combo, FALSE); + g_object_ref (p->combo); + gtk_object_sink (GTK_OBJECT (p->combo)); + gtk_widget_show (GTK_WIDGET (p->combo)); + + i = ephy_zoom_get_zoom_level_index (p->zoom); + gtk_combo_box_set_active (p->combo, i); + + vbox = gtk_vbox_new (TRUE, 0); + gtk_box_pack_start (GTK_BOX (vbox), GTK_WIDGET (p->combo), TRUE, FALSE, 0); + gtk_widget_show (vbox); + + gtk_container_add (GTK_CONTAINER (control), vbox); + + p->handler_id = g_signal_connect (p->combo, "changed", + G_CALLBACK (combo_changed_cb), control); + + g_signal_connect_object (control, "notify::zoom", + G_CALLBACK (sync_zoom_cb), NULL, 0); +} + +static void +ephy_zoom_control_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + EphyZoomControl *control; + EphyZoomControlPrivate *p; + + control = EPHY_ZOOM_CONTROL (object); + p = control->priv; + + switch (prop_id) + { + case PROP_ZOOM: + p->zoom = g_value_get_float (value); + break; + } +} + +static void +ephy_zoom_control_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + EphyZoomControl *control; + EphyZoomControlPrivate *p; + + control = EPHY_ZOOM_CONTROL (object); + p = control->priv; + + switch (prop_id) + { + case PROP_ZOOM: + g_value_set_float (value, p->zoom); + break; + } +} + +static void +set_combo_tooltip (GtkWidget *widget, + GtkTooltipsData *data) +{ + if (GTK_IS_BUTTON (widget)) + { + gtk_tooltips_set_tip (data->tooltips, widget, + data->tip_text, data->tip_private); + } +} + +static void +combo_realized (GtkWidget *combo, + GtkWidget *control) +{ + GtkTooltipsData *data; + + data = gtk_tooltips_data_get (control); + g_return_if_fail (data != NULL); + + gtk_container_forall (GTK_CONTAINER (combo), + (GtkCallback) set_combo_tooltip, data); +} + +static gboolean +ephy_zoom_control_set_tooltip (GtkToolItem *tool_item, + GtkTooltips *tooltips, + const char *tip_text, + const char *tip_private) +{ + EphyZoomControl *control = EPHY_ZOOM_CONTROL (tool_item); + GtkWidget *widget = GTK_WIDGET (tool_item); + + /* hack to make tooltips work also on Ctrl-F1 */ + gtk_tooltips_set_tip (tooltips, widget, tip_text, tip_private); + + g_signal_handlers_disconnect_by_func + (control->priv->combo, G_CALLBACK (combo_realized), widget); + + if (GTK_WIDGET_REALIZED (tool_item)) + { + combo_realized (GTK_WIDGET (control->priv->combo), widget); + } + else + { + g_signal_connect_after (control->priv->combo, "realize", + G_CALLBACK (combo_realized), widget); + } + + return TRUE; +} + +static void +ephy_zoom_control_class_init (EphyZoomControlClass *klass) +{ + GObjectClass *object_class; + GtkToolItemClass *tool_item_class; + + parent_class = g_type_class_peek_parent (klass); + + object_class = (GObjectClass *)klass; + tool_item_class = (GtkToolItemClass *)klass; + + object_class->set_property = ephy_zoom_control_set_property; + object_class->get_property = ephy_zoom_control_get_property; + object_class->finalize = ephy_zoom_control_finalize; + + tool_item_class->set_tooltip = ephy_zoom_control_set_tooltip; + + g_object_class_install_property (object_class, + PROP_ZOOM, + g_param_spec_float ("zoom", + "Zoom", + "Zoom level to display in the item.", + ZOOM_MINIMAL, + ZOOM_MAXIMAL, + 1.0, + G_PARAM_READWRITE)); + + signals[ZOOM_TO_LEVEL_SIGNAL] = + g_signal_new ("zoom_to_level", + G_TYPE_FROM_CLASS (klass), + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (EphyZoomControlClass, + zoom_to_level), + NULL, NULL, + g_cclosure_marshal_VOID__FLOAT, + G_TYPE_NONE, + 1, + G_TYPE_FLOAT); + + g_type_class_add_private (object_class, sizeof (EphyZoomControlPrivate)); +} + +static void +ephy_zoom_control_finalize (GObject *o) +{ + EphyZoomControl *control = EPHY_ZOOM_CONTROL (o); + + g_object_unref (control->priv->combo); + + G_OBJECT_CLASS (parent_class)->finalize (o); +} + +void +ephy_zoom_control_set_zoom_level (EphyZoomControl *control, float zoom) +{ + g_return_if_fail (EPHY_IS_ZOOM_CONTROL (control)); + + if (zoom < ZOOM_MINIMAL || zoom > ZOOM_MAXIMAL) return; + + control->priv->zoom = zoom; + g_object_notify (G_OBJECT (control), "zoom"); +} + +float +ephy_zoom_control_get_zoom_level (EphyZoomControl *control) +{ + g_return_val_if_fail (EPHY_IS_ZOOM_CONTROL (control), 1.0); + + return control->priv->zoom; +} |