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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 PPAPI_PROXY_BROWSER_FONT_TRUSTED_RESOURCE_H_ | |
6 #define PPAPI_PROXY_BROWSER_FONT_TRUSTED_RESOURCE_H_ | |
7 | |
8 #include <string> | |
9 | |
10 #include "base/basictypes.h" | |
11 #include "base/memory/scoped_ptr.h" | |
12 #include "ppapi/c/pp_bool.h" | |
13 #include "ppapi/c/pp_instance.h" | |
14 #include "ppapi/c/pp_resource.h" | |
15 #include "ppapi/c/pp_stdint.h" | |
16 #include "ppapi/proxy/plugin_resource.h" | |
17 #include "ppapi/proxy/ppapi_proxy_export.h" | |
18 #include "ppapi/shared_impl/ppapi_preferences.h" | |
19 #include "ppapi/thunk/ppb_browser_font_trusted_api.h" | |
20 | |
21 class SkCanvas; | |
22 | |
23 namespace WebKit { | |
24 class WebFont; | |
25 } | |
26 | |
27 namespace ppapi { | |
28 namespace proxy { | |
29 | |
30 class PPAPI_PROXY_EXPORT BrowserFontResource_Trusted | |
31 : public PluginResource, | |
32 public thunk::PPB_BrowserFont_Trusted_API { | |
33 public: | |
34 BrowserFontResource_Trusted(Connection connection, | |
35 PP_Instance instance, | |
36 const PP_BrowserFont_Trusted_Description& desc, | |
37 const Preferences& prefs); | |
38 | |
39 virtual ~BrowserFontResource_Trusted(); | |
40 | |
41 // Validates the parameters in thee description. Can be called on any thread. | |
42 static bool IsPPFontDescriptionValid( | |
43 const PP_BrowserFont_Trusted_Description& desc); | |
44 | |
45 // Resource override. | |
46 virtual ::ppapi::thunk::PPB_BrowserFont_Trusted_API* | |
47 AsPPB_BrowserFont_Trusted_API() OVERRIDE; | |
48 | |
49 // PPB_BrowserFont_Trusted_API implementation. | |
50 virtual PP_Bool Describe(PP_BrowserFont_Trusted_Description* description, | |
51 PP_BrowserFont_Trusted_Metrics* metrics) OVERRIDE; | |
52 virtual PP_Bool DrawTextAt(PP_Resource image_data, | |
53 const PP_BrowserFont_Trusted_TextRun* text, | |
54 const PP_Point* position, | |
55 uint32_t color, | |
56 const PP_Rect* clip, | |
57 PP_Bool image_data_is_opaque) OVERRIDE; | |
58 virtual int32_t MeasureText( | |
59 const PP_BrowserFont_Trusted_TextRun* text) OVERRIDE; | |
60 virtual uint32_t CharacterOffsetForPixel( | |
61 const PP_BrowserFont_Trusted_TextRun* text, | |
62 int32_t pixel_position) OVERRIDE; | |
63 virtual int32_t PixelOffsetForCharacter( | |
64 const PP_BrowserFont_Trusted_TextRun* text, | |
65 uint32_t char_offset) OVERRIDE; | |
66 | |
67 private: | |
68 // Internal version of DrawTextAt that takes a mapped PlatformCanvas. | |
69 void DrawTextToCanvas(SkCanvas* destination, | |
70 const PP_BrowserFont_Trusted_TextRun& text, | |
71 const PP_Point* position, | |
72 uint32_t color, | |
73 const PP_Rect* clip, | |
74 PP_Bool image_data_is_opaque); | |
75 | |
76 private: | |
77 scoped_ptr<WebKit::WebFont> font_; | |
78 | |
79 DISALLOW_COPY_AND_ASSIGN(BrowserFontResource_Trusted); | |
80 }; | |
81 | |
82 } // namespace proxy | |
83 } // namespace ppapi | |
84 | |
85 #endif // PPAPI_PROXY_BROWSER_FONT_TRUSTED_RESOURCE_H_ | |
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