Index: compositor/xrender/xrender_visitor.h |
diff --git a/compositor/xrender/xrender_visitor.h b/compositor/xrender/xrender_visitor.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..590214baf80fac4caaf2ad8239fdba5830adb4c1 |
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+++ b/compositor/xrender/xrender_visitor.h |
@@ -0,0 +1,88 @@ |
+// Copyright (c) 2011 The Chromium OS Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef WINDOW_MANAGER_COMPOSITOR_XRENDER_XRENDER_VISITOR_H_ |
+#define WINDOW_MANAGER_COMPOSITOR_XRENDER_XRENDER_VISITOR_H_ |
+ |
+#include "base/logging.h" |
+#include "base/scoped_ptr.h" |
+#include "window_manager/compositor/compositor.h" |
+#include "window_manager/compositor/real_compositor.h" |
+#include "window_manager/compositor/texture_data.h" |
+#include "window_manager/x11/x_connection.h" |
+ |
+namespace window_manager { |
+ |
+class ImageContainer; |
+ |
+// This class visits an actor tree and draws it using the XRender extension. |
+class XRenderDrawVisitor : virtual public RealCompositor::ActorVisitor { |
+ public: |
+ XRenderDrawVisitor(RealCompositor* compositor, |
+ Compositor::StageActor* stage); |
+ virtual ~XRenderDrawVisitor(); |
+ |
+ void set_has_fullscreen_actor(bool has_fullscreen_actor) { |
+ has_fullscreen_actor_ = has_fullscreen_actor; |
+ } |
+ void set_damaged_region(Rect damaged_region) { |
+ damaged_region_ = damaged_region; |
+ } |
+ |
+ void BindImage(const ImageContainer* container, |
Daniel Erat
2011/04/05 22:45:19
make this be a reference instead of a pointer
marcheu
2011/04/06 00:26:12
Done.
|
+ RealCompositor::ImageActor* actor); |
+ |
+ virtual void VisitActor(RealCompositor::Actor* actor) {} |
+ virtual void VisitStage(RealCompositor::StageActor* actor); |
+ virtual void VisitContainer(RealCompositor::ContainerActor* actor); |
+ virtual void VisitImage(RealCompositor::ImageActor* actor); |
+ virtual void VisitTexturePixmap(RealCompositor::TexturePixmapActor* actor); |
+ virtual void VisitQuad(RealCompositor::QuadActor* actor); |
+ |
+ private: |
+ // So it can get access to the config data. |
+ friend class XRenderPixmapData; |
+ |
+ virtual bool FreeXResources(); |
+ virtual bool AllocateXResources(Compositor::StageActor* stage); |
+ |
+ XWindow root_window_; |
+ XConnection::WindowGeometry root_geometry_; |
+ |
+ // |back_picture_| the corresponding |back_pixmap_| are used to |
+ // implement a back/front buffer system. |
+ XPicture back_picture_; |
+ XPixmap back_pixmap_; |
+ |
+ // |stage_picture_| is the picture for the front buffer. |
+ // We don't need a stage_pixmap_ here as it is provided |
+ // by the common code already. |
+ XPicture stage_picture_; |
+ |
+ // The visitor should not change settings in the compositor while visiting |
+ // actors throughout the drawing process because the compositor may decide |
+ // to skip drawing frames as an optimization. |
+ RealCompositor* compositor_; // Not owned. |
+ XConnection* xconn_; // Not owned. |
+ RealCompositor::StageActor* stage_; // Not owned. |
+ |
+ // This is the cumulative opacity of all the ancestors of the |
+ // currently visited node. It is recalculated each time we enter or |
+ // leave a container node. |
+ float ancestor_opacity_; |
+ |
+ // The rectangular region of the screen that is damaged in the frame. |
+ // This information allows the draw visitor to perform partial updates. |
+ Rect damaged_region_; |
+ |
+ // This is used to indicate whether the entire screen will be covered by an |
+ // actor so we can optimize by not clearing the back buffer. |
+ bool has_fullscreen_actor_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(XRenderDrawVisitor); |
+}; |
+ |
+} // namespace window_manager |
+ |
+#endif // WINDOW_MANAGER_COMPOSITOR_XRENDER_XRENDER_VISITOR_H_ |