Make the displayed EomImage a property of EomScrollView

fxri · raveit65 · commit 63a6313edf25 · 2018-07-08T12:19:44.000+02:00
Besides the more obvious object orientation it also allows watch the property for changes. Might be useful for plugins. https://bugzilla.gnome.org/show_bug.cgi?id=544068 origin commit: https://git.gnome.org/browse/eog/commit/?h=gnome-3-4&id=4c0b5c8
diff --git a/src/eom-scroll-view.c b/src/eom-scroll-view.c
@@ -73,6 +73,7 @@ enum {
 	PROP_ANTIALIAS_IN,
 	PROP_ANTIALIAS_OUT,
 	PROP_BACKGROUND_COLOR,
+	PROP_IMAGE,
 	PROP_SCROLLWHEEL_ZOOM,
 	PROP_TRANSP_COLOR,
 	PROP_TRANSPARENCY_STYLE,
@@ -1671,6 +1672,31 @@ eom_scroll_view_set_image (EomScrollView *view, EomImage *image)
 	}
 
 	priv->image = image;
+
+	g_object_notify (G_OBJECT (view), "image");
+}
+
+/**
+ * eom_scroll_view_get_image:
+ * @view: An #EomScrollView.
+ *
+ * Gets the the currently displayed #EomImage.
+ *
+ * Returns: (transfer full): An #EomImage.
+ **/
+EomImage*
+eom_scroll_view_get_image (EomScrollView *view)
+{
+	EomImage *img;
+
+	g_return_val_if_fail (EOM_IS_SCROLL_VIEW (view), NULL);
+
+	img = view->priv->image;
+
+	if (img != NULL)
+		g_object_ref (img);
+
+	return img;
 }
 
 gboolean
@@ -1920,6 +1946,9 @@ eom_scroll_view_get_property (GObject *object, guint property_id,
 	case PROP_ZOOM_MULTIPLIER:
 		g_value_set_double (value, priv->zoom_multiplier);
 		break;
+	case PROP_IMAGE:
+		g_value_set_object (value, priv->image);
+		break;
 	default:
 		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 	}
@@ -1963,6 +1992,9 @@ eom_scroll_view_set_property (GObject *object, guint property_id,
 	case PROP_ZOOM_MULTIPLIER:
 		eom_scroll_view_set_zoom_multiplier (view, g_value_get_double (value));
 		break;
+	case PROP_IMAGE:
+		eom_scroll_view_set_image (view, g_value_get_object (value));
+		break;
 	default:
 		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 	}
@@ -2033,6 +2065,16 @@ eom_scroll_view_class_init (EomScrollViewClass *klass)
 		g_param_spec_boolean ("scrollwheel-zoom", NULL, NULL, TRUE,
 		G_PARAM_READWRITE | G_PARAM_STATIC_NAME));
 
+	/**
+	 * EomScrollView:image:
+	 *
+	 * This is the currently display #EomImage.
+	 */
+	g_object_class_install_property (
+		gobject_class, PROP_IMAGE,
+		g_param_spec_object ("image", NULL, NULL, EOM_TYPE_IMAGE,
+				     G_PARAM_READWRITE | G_PARAM_STATIC_NAME));
+
 	/**
 	 * EomScrollView:transparency-color:
 	 *
diff --git a/src/eom-scroll-view.h b/src/eom-scroll-view.h
@@ -40,6 +40,7 @@ GtkWidget* eom_scroll_view_new            (void);
 
 /* loading stuff */
 void     eom_scroll_view_set_image        (EomScrollView *view, EomImage *image);
+EomImage* eom_scroll_view_get_image       (EomScrollView *view);
 
 /* general properties */
 void     eom_scroll_view_set_scroll_wheel_zoom (EomScrollView *view, gboolean scroll_wheel_zoom);
