gdk: Drop expose events

Replace expose events with a GdkSurface::expose signal.
This is part of the move to use events only for input.

4 files changed, 15 insertions, 45 deletions

diff --git a/gdk/gdkevents.c b/gdk/gdkevents.c
index d97b05771b..9ccde4f32b 100644
--- a/gdk/gdkevents.c
+++ b/gdk/gdkevents.c
@@ -646,11 +646,6 @@ gdk_event_copy (const GdkEvent *event)
       g_object_ref (event->dnd.drop);
       break;
 
-    case GDK_EXPOSE:
-      if (event->expose.region)
-        new_event->expose.region = cairo_region_copy (event->expose.region);
-      break;
-
     case GDK_BUTTON_PRESS:
     case GDK_BUTTON_RELEASE:
       if (event->button.axes)
@@ -730,11 +725,6 @@ gdk_event_finalize (GObject *object)
       g_free (event->touch.axes);
       break;
 
-    case GDK_EXPOSE:
-      if (event->expose.region)
-	cairo_region_destroy (event->expose.region);
-      break;
-      
     case GDK_MOTION_NOTIFY:
       g_clear_object (&event->motion.tool);
       g_free (event->motion.axes);
@@ -831,7 +821,6 @@ gdk_event_get_time (const GdkEvent *event)
       case GDK_NOTHING:
       case GDK_DELETE:
       case GDK_DESTROY:
-      case GDK_EXPOSE:
       case GDK_MAP:
       case GDK_UNMAP:
       case GDK_GRAB_BROKEN:
@@ -906,7 +895,6 @@ gdk_event_get_state (const GdkEvent  *event,
       case GDK_NOTHING:
       case GDK_DELETE:
       case GDK_DESTROY:
-      case GDK_EXPOSE:
       case GDK_MAP:
       case GDK_UNMAP:
       case GDK_GRAB_BROKEN:
diff --git a/gdk/gdkevents.h b/gdk/gdkevents.h
index b1ef21fc5f..a39d036d04 100644
--- a/gdk/gdkevents.h
+++ b/gdk/gdkevents.h
@@ -104,7 +104,6 @@ G_BEGIN_DECLS
 
 
 typedef struct _GdkEventAny	    GdkEventAny;
-typedef struct _GdkEventExpose	    GdkEventExpose;
 typedef struct _GdkEventMotion	    GdkEventMotion;
 typedef struct _GdkEventButton	    GdkEventButton;
 typedef struct _GdkEventTouch       GdkEventTouch;
@@ -144,8 +143,6 @@ typedef void (*GdkEventFunc) (GdkEvent *event,
  *   hidden or destroyed, usually when the user clicks on a special icon in the
  *   title bar.
  * @GDK_DESTROY: the surface has been destroyed.
- * @GDK_EXPOSE: all or part of the surface has become visible and needs to be
- *   redrawn.
  * @GDK_MOTION_NOTIFY: the pointer (usually a mouse) has moved.
  * @GDK_BUTTON_PRESS: a mouse button has been pressed.
  * @GDK_BUTTON_RELEASE: a mouse button has been released.
@@ -203,7 +200,6 @@ typedef enum
   GDK_NOTHING,
   GDK_DELETE,
   GDK_DESTROY,
-  GDK_EXPOSE,
   GDK_MOTION_NOTIFY,
   GDK_BUTTON_PRESS,
   GDK_BUTTON_RELEASE,
diff --git a/gdk/gdkeventsprivate.h b/gdk/gdkeventsprivate.h
index ee3beace23..21f3518fbd 100644
--- a/gdk/gdkeventsprivate.h
+++ b/gdk/gdkeventsprivate.h
@@ -64,23 +64,6 @@ struct _GdkEventAny
 };
 
 /*
- * GdkEventExpose:
- * @type: the type of the event (%GDK_EXPOSE)
- * @surface: the surface which received the event.
- * @send_event: %TRUE if the event was sent explicitly.
- * @area: bounding box of @region.
- * @region: the region that needs to be redrawn.
- *
- * Generated when all or part of a surface becomes visible and needs to be
- * redrawn.
- */
-struct _GdkEventExpose
-{
-  GdkEventAny any;
-  cairo_region_t *region;
-};
-
-/*
  * GdkEventMotion:
  * @type: the type of the event.
  * @surface: the surface which received the event.
@@ -573,7 +556,6 @@ struct _GdkEventPadGroupMode {
  * GdkEvent:
  * @type: the #GdkEventType
  * @any: a #GdkEventAny
- * @expose: a #GdkEventExpose
  * @motion: a #GdkEventMotion
  * @button: a #GdkEventButton
  * @touch: a #GdkEventTouch
@@ -624,7 +606,6 @@ struct _GdkEventPadGroupMode {
 union _GdkEvent
 {
   GdkEventAny		    any;
-  GdkEventExpose	    expose;
   GdkEventMotion	    motion;
   GdkEventButton	    button;
   GdkEventTouch             touch;
diff --git a/gdk/gdksurface.c b/gdk/gdksurface.c
index c96f45e82f..622f1d5eea 100644
--- a/gdk/gdksurface.c
+++ b/gdk/gdksurface.c
@@ -98,6 +98,7 @@
 enum {
   MOVED_TO_RECT,
   SIZE_CHANGED,
+  RENDER,
   LAST_SIGNAL
 };
 
@@ -324,6 +325,18 @@ gdk_surface_class_init (GdkSurfaceClass *klass)
                   2,
                   G_TYPE_INT,
                   G_TYPE_INT);
+
+  signals[RENDER] =
+    g_signal_new (g_intern_static_string ("render"),
+                  G_OBJECT_CLASS_TYPE (object_class),
+                  G_SIGNAL_RUN_LAST,
+                  0,
+                  g_signal_accumulator_true_handled,
+                  NULL,
+                  NULL,
+                  G_TYPE_BOOLEAN,
+                  1,
+                  CAIRO_GOBJECT_TYPE_REGION);
 }
 
 static void
@@ -1631,20 +1644,13 @@ static void
 gdk_surface_process_updates_recurse (GdkSurface *surface,
                                      cairo_region_t *expose_region)
 {
-  GdkEvent *event;
+  gboolean handled;
 
   if (surface->destroyed)
     return;
 
   /* Paint the surface before the children, clipped to the surface region */
-
-  event = gdk_event_new (GDK_EXPOSE);
-  event->any.surface = g_object_ref (surface);
-  event->any.send_event = FALSE;
-  event->expose.region = cairo_region_reference (expose_region);
-
-  _gdk_event_emit (event);
-  g_object_unref (event);
+  g_signal_emit (surface, signals[RENDER], 0, expose_region, &handled);
 }
 
 /* Process and remove any invalid area on the native surface by creating
@@ -3937,7 +3943,6 @@ _gdk_make_event (GdkSurface    *surface,
     case GDK_UNMAP:
     case GDK_DELETE:
     case GDK_DESTROY:
-    case GDK_EXPOSE:
     default:
       break;
     }