Merge branch 'zoomable'

[clutter-gtk] / clutter-gtk / gtk-clutter-zoomable.c

diff --git a/clutter-gtk/gtk-clutter-zoomable.c b/clutter-gtk/gtk-clutter-zoomable.c
new file mode 100644 (file)
index 0000000..6758ac0
--- /dev/null
+++ b/clutter-gtk/gtk-clutter-zoomable.c
@@ -0,0 +1,117 @@
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gtk-clutter-zoomable.h"
+
+#define I_(str) (g_intern_static_string ((str)))
+
+/**
+ * SECTION:gtk-clutter-zoomable
+ * @short_description: Interface for zoomable actors
+ *
+ * FIXME
+ *
+ * #GtkClutterZoomable is available since Clutter-GTK 1.0
+ */
+
+static void
+gtk_clutter_zoomable_base_init (gpointer g_iface)
+{
+  static gboolean is_initialized = FALSE;
+
+  if (G_UNLIKELY (!is_initialized))
+    {
+      GParamSpec *pspec;
+
+      /**
+       * GtkClutterZoomable:zadjustment:
+       *
+       * The #GtkAdjustment that determines the value of
+       * the zoom factor for this zoomable actor
+       *
+       * Since: 1.0
+       */
+      pspec = g_param_spec_object ("zadjustment",
+                                   "Zoom Adjustment",
+                                   "The GtkAdjustment that determines "
+                                   "the zoom factor",
+                                   GTK_TYPE_ADJUSTMENT,
+                                   G_PARAM_READWRITE |
+                                   G_PARAM_CONSTRUCT);
+      g_object_interface_install_property (g_iface, pspec);
+
+      is_initialized = TRUE;
+    }
+}
+
+GType
+gtk_clutter_zoomable_get_type (void)
+{
+  static GType zoomable_type = 0;
+
+  if (G_UNLIKELY (!zoomable_type))
+    {
+      const GTypeInfo zoomable_info =
+      {
+        sizeof (GtkClutterZoomableIface),
+        (GBaseInitFunc)     gtk_clutter_zoomable_base_init,
+        (GBaseFinalizeFunc) NULL,
+      };
+
+      zoomable_type = g_type_register_static (G_TYPE_INTERFACE,
+                                              I_("GtkClutterZoomable"),
+                                              &zoomable_info, 0);
+    }
+
+  return zoomable_type;
+}
+
+/**
+ * gtk_clutter_zoomable_set_adjustment:
+ * @zoomable: a #GtkClutterZoomable
+ * @z_adjust: (null-ok): a #GtkAdjustment, or %NULL
+ *
+ * Sets the adjustment used to determine the zoom factor of
+ * the zoomable actor
+ *
+ * Since: 1.0
+ */
+void
+gtk_clutter_zoomable_set_adjustment (GtkClutterZoomable *zoomable,
+                                     GtkAdjustment      *z_adjust)
+{
+  GtkClutterZoomableIface *iface;
+
+  g_return_if_fail (GTK_CLUTTER_IS_ZOOMABLE (zoomable));
+  g_return_if_fail (z_adjust == NULL || GTK_IS_ADJUSTMENT (z_adjust));
+
+  iface = GTK_CLUTTER_ZOOMABLE_GET_IFACE (zoomable);
+  if (iface->set_adjustment)
+    iface->set_adjustment (zoomable, z_adjust);
+}
+
+/**
+ * gtk_clutter_zoomable_get_adjustment:
+ * @zoomable: a #GtkClutterZoomable
+ *
+ * Retrieves the adjustment used to determine the zoom factor of
+ * the zoomable actor
+ *
+ * Return value: (transfer none): a #GtkAdjustment
+ *
+ * Since: 1.0
+ */
+GtkAdjustment *
+gtk_clutter_zoomable_get_adjustment (GtkClutterZoomable *zoomable)
+{
+  GtkClutterZoomableIface *iface;
+
+  g_return_val_if_fail (GTK_CLUTTER_IS_ZOOMABLE (zoomable), NULL);
+
+  iface = GTK_CLUTTER_ZOOMABLE_GET_IFACE (zoomable);
+  if (iface->get_adjustment)
+    return iface->get_adjustment (zoomable);
+
+  return NULL;
+}