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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef UI_GFX_IMAGE_CAIRO_CACHED_SURFACE_H_ | 5 #ifndef UI_GFX_IMAGE_CAIRO_CACHED_SURFACE_H_ |
6 #define UI_GFX_IMAGE_CAIRO_CACHED_SURFACE_H_ | 6 #define UI_GFX_IMAGE_CAIRO_CACHED_SURFACE_H_ |
7 | 7 |
8 #include <vector> | 8 #include <vector> |
9 | 9 |
10 #include "ui/gfx/gfx_export.h" | 10 #include "ui/gfx/gfx_export.h" |
11 | 11 |
12 typedef struct _GdkDisplay GdkDisplay; | 12 typedef struct _GdkDisplay GdkDisplay; |
13 typedef struct _GdkPixbuf GdkPixbuf; | 13 typedef struct _GdkPixbuf GdkPixbuf; |
14 typedef struct _GtkWidget GtkWidget; | 14 typedef struct _GtkWidget GtkWidget; |
15 typedef struct _cairo cairo_t; | 15 typedef struct _cairo cairo_t; |
16 typedef struct _cairo_surface cairo_surface_t; | 16 typedef struct _cairo_surface cairo_surface_t; |
17 | 17 |
18 namespace gfx { | 18 namespace gfx { |
19 | 19 |
20 // A helper class that takes a GdkPixbuf* and renders it to the screen. Unlike | 20 // A helper class that takes a GdkPixbuf* and renders it to the screen. Unlike |
21 // gdk_cairo_set_source_pixbuf(), CairoCachedSurface assumes that the pixbuf is | 21 // gdk_cairo_set_source_pixbuf(), CairoCachedSurface assumes that the pixbuf is |
22 // immutable after UsePixbuf() is called and can be sent to the display server | 22 // immutable after UsePixbuf() is called and can be sent to the display server |
23 // once. From then on, that cached version is used so we don't upload the same | 23 // once. From then on, that cached version is used so we don't upload the same |
24 // image each and every time we expose. | 24 // image each and every time we expose. |
25 // | 25 // |
26 // Most cached surfaces are owned by the GtkThemeService, which associates | 26 // Most cached surfaces are owned by the GtkThemeService, which associates |
27 // them with a certain XDisplay. Some users of surfaces (CustomDrawButtonBase, | 27 // them with a certain XDisplay. Some users of surfaces (CustomDrawButtonBase, |
28 // for example) own their surfaces instead since they interact with the | 28 // for example) own their surfaces instead since they interact with the |
29 // ResourceBundle instead of the GtkThemeService. | 29 // ResourceBundle instead of the GtkThemeService. |
30 class UI_EXPORT CairoCachedSurface { | 30 class GFX_EXPORT CairoCachedSurface { |
31 public: | 31 public: |
32 CairoCachedSurface(); | 32 CairoCachedSurface(); |
33 ~CairoCachedSurface(); | 33 ~CairoCachedSurface(); |
34 | 34 |
35 // Whether this CairoCachedSurface owns a GdkPixbuf. | 35 // Whether this CairoCachedSurface owns a GdkPixbuf. |
36 bool valid() const { | 36 bool valid() const { |
37 return pixbuf_; | 37 return pixbuf_; |
38 } | 38 } |
39 | 39 |
40 // Delete all our data. | 40 // Delete all our data. |
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75 | 75 |
76 // Our list of cached surfaces. 99% of the time, this will only contain a | 76 // Our list of cached surfaces. 99% of the time, this will only contain a |
77 // single entry. At most two. We need to get this right for multiple displays | 77 // single entry. At most two. We need to get this right for multiple displays |
78 // to work correct, since each GdkDisplay is a different display server. | 78 // to work correct, since each GdkDisplay is a different display server. |
79 mutable SurfaceVector surface_map_; | 79 mutable SurfaceVector surface_map_; |
80 }; | 80 }; |
81 | 81 |
82 } // namespace gfx | 82 } // namespace gfx |
83 | 83 |
84 #endif // UI_GFX_IMAGE_CAIRO_CACHED_SURFACE_H_ | 84 #endif // UI_GFX_IMAGE_CAIRO_CACHED_SURFACE_H_ |
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