[metacity] surface: add sync_geometry vfunc

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 4977d10134e66e5d72689c89ad970f9d578d22ce
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Tue Oct 22 22:56:21 2019 +0300

    surface: add sync_geometry vfunc

 src/compositor/meta-surface-private.h |  5 +++++
 src/compositor/meta-surface-vulkan.c  |  9 +++++++++
 src/compositor/meta-surface-xrender.c |  9 +++++++++
 src/compositor/meta-surface.c         | 19 +++++++++++++++++++
 4 files changed, 42 insertions(+)
---
diff --git a/src/compositor/meta-surface-private.h b/src/compositor/meta-surface-private.h
index c285fe1e..f3cb23a1 100644
--- a/src/compositor/meta-surface-private.h
+++ b/src/compositor/meta-surface-private.h
@@ -36,6 +36,11 @@ struct _MetaSurfaceClass
 
   void              (* opacity_changed) (MetaSurface   *self);
 
+  void              (* sync_geometry)   (MetaSurface   *self,
+                                         MetaRectangle  old_geometry,
+                                         gboolean       position_changed,
+                                         gboolean       size_changed);
+
   void              (* free_pixmap)     (MetaSurface   *self);
 
   void              (* pre_paint)       (MetaSurface   *self,
diff --git a/src/compositor/meta-surface-vulkan.c b/src/compositor/meta-surface-vulkan.c
index 49e1a0ce..729fa047 100644
--- a/src/compositor/meta-surface-vulkan.c
+++ b/src/compositor/meta-surface-vulkan.c
@@ -52,6 +52,14 @@ meta_surface_vulkan_opacity_changed (MetaSurface *surface)
 {
 }
 
+static void
+meta_surface_vulkan_sync_geometry (MetaSurface   *surface,
+                                   MetaRectangle  old_geometry,
+                                   gboolean       position_changed,
+                                   gboolean       size_changed)
+{
+}
+
 static void
 meta_surface_vulkan_free_pixmap (MetaSurface *surface)
 {
@@ -75,6 +83,7 @@ meta_surface_vulkan_class_init (MetaSurfaceVulkanClass *self_class)
   surface_class->show = meta_surface_vulkan_show;
   surface_class->hide = meta_surface_vulkan_hide;
   surface_class->opacity_changed = meta_surface_vulkan_opacity_changed;
+  surface_class->sync_geometry = meta_surface_vulkan_sync_geometry;
   surface_class->free_pixmap = meta_surface_vulkan_free_pixmap;
   surface_class->pre_paint = meta_surface_vulkan_pre_paint;
 }
diff --git a/src/compositor/meta-surface-xrender.c b/src/compositor/meta-surface-xrender.c
index 73ed1b48..827649f2 100644
--- a/src/compositor/meta-surface-xrender.c
+++ b/src/compositor/meta-surface-xrender.c
@@ -633,6 +633,14 @@ meta_surface_xrender_opacity_changed (MetaSurface *surface)
   free_mask_picture (self);
 }
 
+static void
+meta_surface_xrender_sync_geometry (MetaSurface   *surface,
+                                    MetaRectangle  old_geometry,
+                                    gboolean       position_changed,
+                                    gboolean       size_changed)
+{
+}
+
 static void
 meta_surface_xrender_free_pixmap (MetaSurface *surface)
 {
@@ -687,6 +695,7 @@ meta_surface_xrender_class_init (MetaSurfaceXRenderClass *self_class)
   surface_class->show = meta_surface_xrender_show;
   surface_class->hide = meta_surface_xrender_hide;
   surface_class->opacity_changed = meta_surface_xrender_opacity_changed;
+  surface_class->sync_geometry = meta_surface_xrender_sync_geometry;
   surface_class->free_pixmap = meta_surface_xrender_free_pixmap;
   surface_class->pre_paint = meta_surface_xrender_pre_paint;
 }
diff --git a/src/compositor/meta-surface.c b/src/compositor/meta-surface.c
index 40f9b5c3..7235596b 100644
--- a/src/compositor/meta-surface.c
+++ b/src/compositor/meta-surface.c
@@ -845,11 +845,22 @@ meta_surface_sync_geometry (MetaSurface *self)
 {
   MetaSurfacePrivate *priv;
   MetaRectangle rect;
+  MetaRectangle old_geometry;
+  gboolean position_changed;
+  gboolean size_changed;
 
   priv = meta_surface_get_instance_private (self);
 
   meta_window_get_input_rect (priv->window, &rect);
 
+  old_geometry.x = priv->x;
+  old_geometry.y = priv->y;
+  old_geometry.width = priv->width;
+  old_geometry.height = priv->height;
+
+  position_changed = FALSE;
+  size_changed = FALSE;
+
   if (priv->x != rect.x ||
       priv->y != rect.y)
     {
@@ -859,6 +870,7 @@ meta_surface_sync_geometry (MetaSurface *self)
       priv->y = rect.y;
 
       priv->position_changed = TRUE;
+      position_changed = TRUE;
     }
 
   if (priv->width != rect.width ||
@@ -871,7 +883,14 @@ meta_surface_sync_geometry (MetaSurface *self)
 
       priv->width = rect.width;
       priv->height = rect.height;
+
+      size_changed = TRUE;
     }
+
+  META_SURFACE_GET_CLASS (self)->sync_geometry (self,
+                                                old_geometry,
+                                                position_changed,
+                                                size_changed);
 }
 
 void