inicial

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
new file mode 100644
index 00000000..6c86b4a4
--- /dev/null
+++ 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;
+}