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-rw-r--r--cut-n-paste/zoom-control/ephy-zoom-control.c345
1 files changed, 345 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
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+++ b/cut-n-paste/zoom-control/ephy-zoom-control.c
@@ -0,0 +1,345 @@
+/*
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $Id$
+ */
+
+#include "config.h"
+
+#include "ephy-zoom-control.h"
+#include "ephy-zoom.h"
+
+#include <gtk/gtk.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;
+ float min_zoom;
+ float max_zoom;
+ guint handler_id;
+};
+
+enum
+{
+ COL_TEXT,
+ COL_IS_SEP
+};
+
+enum
+{
+ PROP_0,
+ PROP_ZOOM,
+ PROP_MIN_ZOOM,
+ PROP_MAX_ZOOM
+};
+
+enum
+{
+ ZOOM_TO_LEVEL_SIGNAL,
+ LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL];
+
+G_DEFINE_TYPE (EphyZoomControl, ephy_zoom_control, GTK_TYPE_TOOL_ITEM)
+
+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 void
+sync_zoom_max_min_cb (EphyZoomControl *control, GParamSpec *pspec, gpointer data)
+{
+ EphyZoomControlPrivate *p = control->priv;
+ GtkListStore *model = (GtkListStore *)gtk_combo_box_get_model (p->combo);
+ GtkTreeIter iter;
+ gint i;
+
+ g_signal_handler_block (p->combo, p->handler_id);
+ gtk_list_store_clear (model);
+
+ for (i = 0; i < n_zoom_levels; i++)
+ {
+ if (zoom_levels[i].level > 0) {
+ if (zoom_levels[i].level < p->min_zoom)
+ continue;
+
+ if (zoom_levels[i].level > p->max_zoom)
+ break;
+ }
+
+ gtk_list_store_append (model, &iter);
+
+ if (zoom_levels[i].name != NULL) {
+ gtk_list_store_set (model, &iter,
+ COL_TEXT, _(zoom_levels[i].name),
+ -1);
+ } else {
+ gtk_list_store_set (model, &iter,
+ COL_IS_SEP, zoom_levels[i].name == NULL,
+ -1);
+ }
+ }
+
+ gtk_combo_box_set_active (p->combo, ephy_zoom_get_zoom_level_index (p->zoom));
+ 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_finalize (GObject *o)
+{
+ EphyZoomControl *control = EPHY_ZOOM_CONTROL (o);
+
+ g_object_unref (control->priv->combo);
+
+ G_OBJECT_CLASS (ephy_zoom_control_parent_class)->finalize (o);
+}
+
+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);
+
+ if (zoom_levels[i].name != NULL) {
+ gtk_list_store_set (store, &iter,
+ COL_TEXT, _(zoom_levels[i].name),
+ -1);
+ } else {
+ gtk_list_store_set (store, &iter,
+ 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_sink (G_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);
+ g_signal_connect_object (control, "notify::min-zoom",
+ G_CALLBACK (sync_zoom_max_min_cb), NULL, 0);
+ g_signal_connect_object (control, "notify::max-zoom",
+ G_CALLBACK (sync_zoom_max_min_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;
+ case PROP_MIN_ZOOM:
+ p->min_zoom = g_value_get_float (value);
+ break;
+ case PROP_MAX_ZOOM:
+ p->max_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;
+ case PROP_MIN_ZOOM:
+ g_value_set_float (value, p->min_zoom);
+ break;
+ case PROP_MAX_ZOOM:
+ g_value_set_float (value, p->max_zoom);
+ break;
+ }
+}
+
+static void
+ephy_zoom_control_class_init (EphyZoomControlClass *klass)
+{
+ GObjectClass *object_class;
+ GtkToolItemClass *tool_item_class;
+
+ 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;
+
+ 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));
+ g_object_class_install_property (object_class,
+ PROP_MIN_ZOOM,
+ g_param_spec_float ("min-zoom",
+ "MinZoom",
+ "The minimum zoom",
+ ZOOM_MINIMAL,
+ ZOOM_MAXIMAL,
+ ZOOM_MINIMAL,
+ G_PARAM_READWRITE));
+ g_object_class_install_property (object_class,
+ PROP_MAX_ZOOM,
+ g_param_spec_float ("max-zoom",
+ "MaxZoom",
+ "The maximum zoom",
+ ZOOM_MINIMAL,
+ ZOOM_MAXIMAL,
+ ZOOM_MAXIMAL,
+ 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));
+}
+
+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;
+}
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