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1 // Copyright (c) 2011 The Chromium OS Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef WINDOW_MANAGER_COMPOSITOR_XRENDER_XRENDER_VISITOR_H_ | |
6 #define WINDOW_MANAGER_COMPOSITOR_XRENDER_XRENDER_VISITOR_H_ | |
7 | |
8 #include "base/logging.h" | |
9 #include "base/scoped_ptr.h" | |
10 #include "window_manager/compositor/compositor.h" | |
11 #include "window_manager/compositor/real_compositor.h" | |
12 #include "window_manager/compositor/texture_data.h" | |
13 #include "window_manager/x11/x_connection.h" | |
14 | |
15 namespace window_manager { | |
16 | |
17 class ImageContainer; | |
18 | |
19 // This class visits an actor tree and draws it using the XRender extension. | |
20 class XRenderDrawVisitor : virtual public RealCompositor::ActorVisitor { | |
21 public: | |
22 XRenderDrawVisitor(RealCompositor* compositor, | |
23 Compositor::StageActor* stage); | |
24 virtual ~XRenderDrawVisitor(); | |
25 | |
26 void set_has_fullscreen_actor(bool has_fullscreen_actor) { | |
27 has_fullscreen_actor_ = has_fullscreen_actor; | |
28 } | |
29 void set_damaged_region(Rect damaged_region) { | |
30 damaged_region_ = damaged_region; | |
31 } | |
32 | |
33 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.
| |
34 RealCompositor::ImageActor* actor); | |
35 | |
36 virtual void VisitActor(RealCompositor::Actor* actor) {} | |
37 virtual void VisitStage(RealCompositor::StageActor* actor); | |
38 virtual void VisitContainer(RealCompositor::ContainerActor* actor); | |
39 virtual void VisitImage(RealCompositor::ImageActor* actor); | |
40 virtual void VisitTexturePixmap(RealCompositor::TexturePixmapActor* actor); | |
41 virtual void VisitQuad(RealCompositor::QuadActor* actor); | |
42 | |
43 private: | |
44 // So it can get access to the config data. | |
45 friend class XRenderPixmapData; | |
46 | |
47 virtual bool FreeXResources(); | |
48 virtual bool AllocateXResources(Compositor::StageActor* stage); | |
49 | |
50 XWindow root_window_; | |
51 XConnection::WindowGeometry root_geometry_; | |
52 | |
53 // |back_picture_| the corresponding |back_pixmap_| are used to | |
54 // implement a back/front buffer system. | |
55 XPicture back_picture_; | |
56 XPixmap back_pixmap_; | |
57 | |
58 // |stage_picture_| is the picture for the front buffer. | |
59 // We don't need a stage_pixmap_ here as it is provided | |
60 // by the common code already. | |
61 XPicture stage_picture_; | |
62 | |
63 // The visitor should not change settings in the compositor while visiting | |
64 // actors throughout the drawing process because the compositor may decide | |
65 // to skip drawing frames as an optimization. | |
66 RealCompositor* compositor_; // Not owned. | |
67 XConnection* xconn_; // Not owned. | |
68 RealCompositor::StageActor* stage_; // Not owned. | |
69 | |
70 // This is the cumulative opacity of all the ancestors of the | |
71 // currently visited node. It is recalculated each time we enter or | |
72 // leave a container node. | |
73 float ancestor_opacity_; | |
74 | |
75 // The rectangular region of the screen that is damaged in the frame. | |
76 // This information allows the draw visitor to perform partial updates. | |
77 Rect damaged_region_; | |
78 | |
79 // This is used to indicate whether the entire screen will be covered by an | |
80 // actor so we can optimize by not clearing the back buffer. | |
81 bool has_fullscreen_actor_; | |
82 | |
83 DISALLOW_COPY_AND_ASSIGN(XRenderDrawVisitor); | |
84 }; | |
85 | |
86 } // namespace window_manager | |
87 | |
88 #endif // WINDOW_MANAGER_COMPOSITOR_XRENDER_XRENDER_VISITOR_H_ | |
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