[stage] Add set/get_minumum_size

Add two functions to set/get the minimum stage size. This takes effect
when a stage is set to user resizable.

clutter/clutter-stage.c

@@ -82,6 +82,8 @@ struct _ClutterStagePrivate
 {
   /* the stage implementation */
   ClutterStageWindow *impl;
+  guint               minimum_width;
+  guint               minimum_height;
 
   ClutterColor        color;
   ClutterPerspective  perspective;
@@ -1179,6 +1181,8 @@ clutter_stage_init (ClutterStage *self)
   priv->throttle_motion_events = TRUE;
 
   priv->color = default_stage_color;
+  priv->minimum_width = 640;
+  priv->minimum_height = 480;
 
   priv->perspective.fovy   = 60.0; /* 60 Degrees */
   priv->perspective.aspect = 1.0;
@@ -2322,3 +2326,74 @@ clutter_stage_get_use_alpha (ClutterStage *stage)
 
   return stage->priv->use_alpha;
 }
+
+/**
+ * clutter_stage_set_minimum_size:
+ * @stage: a #ClutterStage
+ * @width: width, in pixels
+ * @height: height, in pixels
+ *
+ * Sets the minimum size for a stage window. This has no effect if the stage
+ * is fullscreen.
+ *
+ * Since: 1.2
+ */
+void
+clutter_stage_set_minimum_size (ClutterStage *stage,
+                                guint         width,
+                                guint         height)
+{
+  gboolean resize;
+  ClutterGeometry geom;
+
+  g_return_if_fail (CLUTTER_IS_STAGE (stage));
+  g_return_if_fail ((width > 0) && (height > 0));
+
+  stage->priv->minimum_width = width;
+  stage->priv->minimum_height = height;
+
+  if (stage->priv->impl == NULL)
+    return;
+
+  resize = FALSE;
+  _clutter_stage_window_get_geometry (stage->priv->impl, &geom);
+
+  if (geom.width < width)
+    resize = TRUE;
+  else
+    width = geom.width;
+
+  if (geom.height < height)
+    resize = TRUE;
+  else
+    height = geom.height;
+
+  if (resize)
+    _clutter_stage_window_resize (stage->priv->impl, width, height);
+}
+
+/**
+ * clutter_stage_get_minimum_size:
+ * @stage: a #ClutterStage
+ * @width: width, in pixels
+ * @height: height, in pixels
+ *
+ * Gets the set minimum size for a stage window. This may not correspond
+ * to the actual minimum size and is specific to the back-end
+ * implementation.
+ *
+ * Since: 1.2
+ */
+void
+clutter_stage_get_minimum_size (ClutterStage *stage,
+                                guint        *width,
+                                guint        *height)
+{
+  g_return_if_fail (CLUTTER_IS_STAGE (stage));
+
+  if (width)
+    *width = stage->priv->minimum_width;
+  if (height)
+    *height = stage->priv->minimum_height;
+}
+

clutter/clutter-stage.h

@@ -247,6 +247,13 @@ void                  clutter_stage_set_use_alpha      (ClutterStage *stage,
                                                         gboolean      use_alpha);
 gboolean              clutter_stage_get_use_alpha      (ClutterStage *stage);
 
+void                  clutter_stage_set_minimum_size (ClutterStage *stage,
+                                                      guint         width,
+                                                      guint         height);
+void                  clutter_stage_get_minimum_size (ClutterStage *stage,
+                                                      guint        *width,
+                                                      guint        *height);
+
 /* Commodity macro, for mallum only */
 #define clutter_stage_add(stage,actor)                  G_STMT_START {  \
   if (CLUTTER_IS_STAGE ((stage)) && CLUTTER_IS_ACTOR ((actor)))         \

clutter/x11/clutter-stage-x11.c

@@ -191,9 +191,9 @@ clutter_stage_x11_get_geometry (ClutterStageWindow *stage_window,
 
   if (resize)
     {
-      /* FIXME need API to set this */
-      geometry->width = 1;
-      geometry->height = 1;
+      clutter_stage_get_minimum_size (stage_x11->wrapper,
+                                      &geometry->width,
+                                      &geometry->height);
     }
   else
     {

doc/reference/clutter/clutter-sections.txt

@@ -533,6 +533,8 @@ clutter_stage_set_throttle_motion_events
 clutter_stage_get_throttle_motion_events
 clutter_stage_set_use_alpha
 clutter_stage_get_use_alpha
+clutter_stage_set_minimum_size
+clutter_stage_get_minimum_size
 
 <SUBSECTION>
 ClutterPerspective