[evince] [ephy-zoom] Add max/min zoom properties

[Carlos Garcia Campos <carlosgc src gnome org>]

commit 8e0b5c5df827306c6c4e3761b1ea4a9f3a1674ed
Author: Carlos Garcia Campos <carlosgc gnome org>
Date:   Mon May 31 17:31:26 2010 +0200

    [ephy-zoom] Add max/min zoom properties

 cut-n-paste/zoom-control/ephy-zoom-action.c  |   87 +++++++++++++++++++++++++-
 cut-n-paste/zoom-control/ephy-zoom-action.h  |   11 +++-
 cut-n-paste/zoom-control/ephy-zoom-control.c |   78 +++++++++++++++++++++++-
 3 files changed, 170 insertions(+), 6 deletions(-)
---
diff --git a/cut-n-paste/zoom-control/ephy-zoom-action.c b/cut-n-paste/zoom-control/ephy-zoom-action.c
index 15a08df..a264649 100644
--- a/cut-n-paste/zoom-control/ephy-zoom-action.c
+++ b/cut-n-paste/zoom-control/ephy-zoom-action.c
@@ -36,12 +36,16 @@
 struct _EphyZoomActionPrivate
 {
 	float zoom;
+	float min_zoom;
+	float max_zoom;
 };
 
 enum
 {
 	PROP_0,
-	PROP_ZOOM
+	PROP_ZOOM,
+	PROP_MIN_ZOOM,
+	PROP_MAX_ZOOM
 };
 
 
@@ -103,13 +107,32 @@ sync_zoom_cb (GtkAction *action, GParamSpec *pspec, GtkWidget *proxy)
 }
 
 static void
+sync_min_zoom_cb (GtkAction *action, GParamSpec *pspec, GtkWidget *proxy)
+{
+	EphyZoomAction *zoom_action = EPHY_ZOOM_ACTION (action);
+
+	g_object_set (G_OBJECT (proxy), "min-zoom", zoom_action->priv->min_zoom, NULL);
+}
+
+static void
+sync_max_zoom_cb (GtkAction *action, GParamSpec *pspec, GtkWidget *proxy)
+{
+	EphyZoomAction *zoom_action = EPHY_ZOOM_ACTION (action);
+
+	g_object_set (G_OBJECT (proxy), "max-zoom", zoom_action->priv->max_zoom, NULL);
+}
+
+static void
 connect_proxy (GtkAction *action, GtkWidget *proxy)
 {
 	if (EPHY_IS_ZOOM_CONTROL (proxy))
 	{
 		g_signal_connect_object (action, "notify::zoom",
 					 G_CALLBACK (sync_zoom_cb), proxy, 0);
-	
+		g_signal_connect_object (action, "notify::min-zoom",
+					 G_CALLBACK (sync_min_zoom_cb), proxy, 0);
+		g_signal_connect_object (action, "notify::max-zoom",
+					 G_CALLBACK (sync_max_zoom_cb), proxy, 0);
 		g_signal_connect (proxy, "zoom_to_level",
 				  G_CALLBACK (zoom_to_level_cb), action);
 	}
@@ -195,6 +218,12 @@ ephy_zoom_action_set_property (GObject *object,
 		case PROP_ZOOM:
 			action->priv->zoom = g_value_get_float (value);
 			break;
+	        case PROP_MIN_ZOOM:
+			action->priv->min_zoom = g_value_get_float (value);
+			break;
+	        case PROP_MAX_ZOOM:
+			action->priv->max_zoom = g_value_get_float (value);
+			break;
 	}
 }
 
@@ -213,6 +242,12 @@ ephy_zoom_action_get_property (GObject *object,
 		case PROP_ZOOM:
 			g_value_set_float (value, action->priv->zoom);
 			break;
+		case PROP_MIN_ZOOM:
+			g_value_set_float (value, action->priv->min_zoom);
+			break;
+		case PROP_MAX_ZOOM:
+			g_value_set_float (value, action->priv->max_zoom);
+			break;
 	}
 }
 
@@ -240,6 +275,24 @@ ephy_zoom_action_class_init (EphyZoomActionClass *class)
 							     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",
@@ -281,3 +334,33 @@ ephy_zoom_action_get_zoom_level (EphyZoomAction *action)
 	
 	return action->priv->zoom;
 }
+
+void
+ephy_zoom_action_set_min_zoom_level (EphyZoomAction *action,
+				     float           zoom)
+{
+	g_return_if_fail (EPHY_IS_ZOOM_ACTION (action));
+
+	if (zoom < ZOOM_MINIMAL || zoom > ZOOM_MAXIMAL) return;
+
+	action->priv->min_zoom = zoom;
+	if (action->priv->zoom > 0 && action->priv->zoom < zoom)
+		ephy_zoom_action_set_zoom_level (action, zoom);
+
+	g_object_notify (G_OBJECT (action), "min-zoom");
+}
+
+void
+ephy_zoom_action_set_max_zoom_level (EphyZoomAction *action,
+				     float           zoom)
+{
+	g_return_if_fail (EPHY_IS_ZOOM_ACTION (action));
+
+	if (zoom < ZOOM_MINIMAL || zoom > ZOOM_MAXIMAL) return;
+
+	action->priv->max_zoom = zoom;
+	if (action->priv->zoom > 0 && action->priv->zoom > zoom)
+		ephy_zoom_action_set_zoom_level (action, zoom);
+
+	g_object_notify (G_OBJECT (action), "max-zoom");
+}
diff --git a/cut-n-paste/zoom-control/ephy-zoom-action.h b/cut-n-paste/zoom-control/ephy-zoom-action.h
index d7362c0..2d07c69 100644
--- a/cut-n-paste/zoom-control/ephy-zoom-action.h
+++ b/cut-n-paste/zoom-control/ephy-zoom-action.h
@@ -52,11 +52,16 @@ struct _EphyZoomActionClass
 	void (* zoom_to_level)	(EphyZoomAction *action, float level);
 };
 
-GType	ephy_zoom_action_get_type	(void);
+GType	ephy_zoom_action_get_type	    (void);
 
-void	ephy_zoom_action_set_zoom_level	(EphyZoomAction *action, float zoom);
+void	ephy_zoom_action_set_zoom_level	    (EphyZoomAction *action,
+					     float           zoom);
+float	ephy_zoom_action_get_zoom_level	    (EphyZoomAction *action);
 
-float	ephy_zoom_action_get_zoom_level	(EphyZoomAction *action);
+void    ephy_zoom_action_set_min_zoom_level (EphyZoomAction *action,
+					     float           zoom);
+void    ephy_zoom_action_set_max_zoom_level (EphyZoomAction *action,
+					     float           zoom);
 
 G_END_DECLS
 
diff --git a/cut-n-paste/zoom-control/ephy-zoom-control.c b/cut-n-paste/zoom-control/ephy-zoom-control.c
index 07bd030..6c86b4a 100644
--- a/cut-n-paste/zoom-control/ephy-zoom-control.c
+++ b/cut-n-paste/zoom-control/ephy-zoom-control.c
@@ -35,6 +35,8 @@ struct _EphyZoomControlPrivate
 {
 	GtkComboBox *combo;
 	float zoom;
+	float min_zoom;
+	float max_zoom;
 	guint handler_id;
 };
 
@@ -47,7 +49,9 @@ enum
 enum
 {
 	PROP_0,
-	PROP_ZOOM
+	PROP_ZOOM,
+	PROP_MIN_ZOOM,
+	PROP_MAX_ZOOM
 };
 
 enum
@@ -88,6 +92,44 @@ sync_zoom_cb (EphyZoomControl *control, GParamSpec *pspec, gpointer data)
 	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,
@@ -169,6 +211,10 @@ ephy_zoom_control_init (EphyZoomControl *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
@@ -188,6 +234,12 @@ ephy_zoom_control_set_property (GObject *object,
 		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;
 	}
 }
 
@@ -208,6 +260,12 @@ ephy_zoom_control_get_property (GObject *object,
 		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;
 	}
 }
 
@@ -233,6 +291,24 @@ ephy_zoom_control_class_init (EphyZoomControlClass *klass)
 							     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",