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1 // Copyright (c) 2012 The Chromium 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 CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_GTK_H_ | |
6 #define CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_GTK_H_ | |
7 | |
8 #include <vector> | |
9 | |
10 #include "base/basictypes.h" | |
11 #include "base/compiler_specific.h" | |
12 #include "build/build_config.h" | |
13 #include "content/browser/renderer_host/backing_store.h" | |
14 #include "content/common/content_export.h" | |
15 #include "ui/gfx/x/x11_types.h" | |
16 | |
17 namespace gfx { | |
18 class Point; | |
19 class Rect; | |
20 } | |
21 | |
22 typedef struct _GdkDrawable GdkDrawable; | |
23 | |
24 namespace content { | |
25 | |
26 class CONTENT_EXPORT BackingStoreGtk : public BackingStore { | |
27 public: | |
28 // Create a backing store on the X server. The visual is an Xlib Visual | |
29 // describing the format of the target window and the depth is the color | |
30 // depth of the X window which will be drawn into. | |
31 BackingStoreGtk(RenderWidgetHost* widget, | |
32 const gfx::Size& size, | |
33 void* visual, | |
34 int depth); | |
35 | |
36 // This is for unittesting only. An object constructed using this constructor | |
37 // will silently ignore all paints | |
38 BackingStoreGtk(RenderWidgetHost* widget, const gfx::Size& size); | |
39 | |
40 virtual ~BackingStoreGtk(); | |
41 | |
42 XDisplay* display() const { return display_; } | |
43 XID root_window() const { return root_window_; } | |
44 | |
45 // Copy from the server-side backing store to the target window | |
46 // origin: the destination rectangle origin | |
47 // damage: the area to copy | |
48 // target: the X id of the target window | |
49 void XShowRect(const gfx::Point &origin, const gfx::Rect& damage, | |
50 XID target); | |
51 | |
52 #if defined(TOOLKIT_GTK) | |
53 // Paint the backing store into the target's |dest_rect|. | |
54 void PaintToRect(const gfx::Rect& dest_rect, GdkDrawable* target); | |
55 #endif | |
56 | |
57 // BackingStore implementation. | |
58 virtual size_t MemorySize() OVERRIDE; | |
59 virtual void PaintToBackingStore( | |
60 RenderProcessHost* process, | |
61 TransportDIB::Id bitmap, | |
62 const gfx::Rect& bitmap_rect, | |
63 const std::vector<gfx::Rect>& copy_rects, | |
64 float scale_factor, | |
65 const base::Closure& completion_callback, | |
66 bool* scheduled_completion_callback) OVERRIDE; | |
67 virtual bool CopyFromBackingStore(const gfx::Rect& rect, | |
68 skia::PlatformBitmap* output) OVERRIDE; | |
69 virtual void ScrollBackingStore(const gfx::Vector2d& delta, | |
70 const gfx::Rect& clip_rect, | |
71 const gfx::Size& view_size) OVERRIDE; | |
72 | |
73 private: | |
74 // Paints the bitmap from the renderer onto the backing store without | |
75 // using Xrender to composite the pixmaps. | |
76 void PaintRectWithoutXrender(TransportDIB* bitmap, | |
77 const gfx::Rect& bitmap_rect, | |
78 const std::vector<gfx::Rect>& copy_rects); | |
79 | |
80 // This is the connection to the X server where this backing store will be | |
81 // displayed. | |
82 XDisplay* const display_; | |
83 // What flavor, if any, MIT-SHM (X shared memory) support we have. | |
84 const ui::SharedMemorySupport shared_memory_support_; | |
85 // If this is true, then we can use Xrender to composite our pixmaps. | |
86 const bool use_render_; | |
87 // If |use_render_| is false, this is the number of bits-per-pixel for |depth| | |
88 int pixmap_bpp_; | |
89 // if |use_render_| is false, we need the Visual to get the RGB masks. | |
90 void* const visual_; | |
91 // This is the depth of the target window. | |
92 const int visual_depth_; | |
93 // The parent window (probably a GtkDrawingArea) for this backing store. | |
94 const XID root_window_; | |
95 // This is a handle to the server side pixmap which is our backing store. | |
96 XID pixmap_; | |
97 // This is the RENDER picture pointing at |pixmap_|. | |
98 XID picture_; | |
99 // This is a default graphic context, used in XCopyArea | |
100 void* pixmap_gc_; | |
101 | |
102 DISALLOW_COPY_AND_ASSIGN(BackingStoreGtk); | |
103 }; | |
104 | |
105 } // namespace content | |
106 | |
107 #endif // CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_GTK_H_ | |
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