[ephy-zoom] Add max/min zoom properties

[evince.git] / cut-n-paste / zoom-control / ephy-zoom-action.c

diff --git a/cut-n-paste/zoom-control/ephy-zoom-action.c b/cut-n-paste/zoom-control/ephy-zoom-action.c
index 15a08df8db5ceec8c18b546325e63156a1d58399..a264649aee374617faefcf312f8cd3b54c6d5e0e 100644 (file)
--- 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
 };
 
 
@@ -102,6 +106,22 @@ sync_zoom_cb (GtkAction *action, GParamSpec *pspec, GtkWidget *proxy)
        g_object_set (G_OBJECT (proxy), "zoom", zoom_action->priv->zoom, NULL);
 }
 
+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)
 {
@@ -109,7 +129,10 @@ connect_proxy (GtkAction *action, GtkWidget *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");
+}