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Side by Side Diff: ppapi/proxy/ppb_font_proxy.h

Issue 9192038: Relanding this with fixes to the mac dbg builder (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: '' Created 8 years, 11 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 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 PPAPI_PROXY_PPB_FONT_PROXY_H_ 5 #ifndef PPAPI_PROXY_PPB_FONT_PROXY_H_
6 #define PPAPI_PROXY_PPB_FONT_PROXY_H_ 6 #define PPAPI_PROXY_PPB_FONT_PROXY_H_
7 7
8 #include "base/callback_forward.h" 8 #include "base/callback_forward.h"
9 #include "base/synchronization/waitable_event.h"
10 #include "ppapi/proxy/interface_proxy.h" 9 #include "ppapi/proxy/interface_proxy.h"
11 #include "ppapi/shared_impl/function_group_base.h" 10 #include "ppapi/shared_impl/function_group_base.h"
12 #include "ppapi/shared_impl/host_resource.h" 11 #include "ppapi/shared_impl/host_resource.h"
13 #include "ppapi/shared_impl/resource.h" 12 #include "ppapi/shared_impl/resource.h"
14 #include "ppapi/shared_impl/webkit_forwarding.h"
15 #include "ppapi/thunk/ppb_font_api.h" 13 #include "ppapi/thunk/ppb_font_api.h"
16 14
17 namespace ppapi { 15 namespace ppapi {
18 namespace proxy { 16 namespace proxy {
19 17
20 class PPB_Font_Proxy : public InterfaceProxy, 18 class PPB_Font_Proxy : public InterfaceProxy,
21 public ppapi::thunk::PPB_Font_FunctionAPI { 19 public ppapi::thunk::PPB_Font_FunctionAPI {
22 public: 20 public:
23 explicit PPB_Font_Proxy(Dispatcher* dispatcher); 21 explicit PPB_Font_Proxy(Dispatcher* dispatcher);
24 virtual ~PPB_Font_Proxy(); 22 virtual ~PPB_Font_Proxy();
25 23
26 // FunctionGroupBase overrides. 24 // FunctionGroupBase overrides.
27 virtual ppapi::thunk::PPB_Font_FunctionAPI* AsPPB_Font_FunctionAPI() OVERRIDE; 25 virtual ppapi::thunk::PPB_Font_FunctionAPI* AsPPB_Font_FunctionAPI() OVERRIDE;
28 26
29 // PPB_Font_FunctionAPI implementation. 27 // PPB_Font_FunctionAPI implementation.
30 virtual PP_Var GetFontFamilies(PP_Instance instance) OVERRIDE; 28 virtual PP_Var GetFontFamilies(PP_Instance instance) OVERRIDE;
31 29
32 // InterfaceProxy implementation. 30 // InterfaceProxy implementation.
33 virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE; 31 virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
34 32
35 static const ApiID kApiID = API_ID_PPB_FONT; 33 static const ApiID kApiID = API_ID_PPB_FONT;
36 34
37 private: 35 private:
38 DISALLOW_COPY_AND_ASSIGN(PPB_Font_Proxy); 36 DISALLOW_COPY_AND_ASSIGN(PPB_Font_Proxy);
39 }; 37 };
40 38
41 class Font : public ppapi::Resource,
42 public ppapi::thunk::PPB_Font_API {
43 public:
44 // Note that there isn't a "real" resource in the renderer backing a font,
45 // it lives entirely in the plugin process. So the resource ID in the host
46 // resource should be 0. However, various code assumes the instance in the
47 // host resource is valid (this is how resources are associated with
48 // instances), so that should be set.
49 Font(const ppapi::HostResource& resource, const PP_FontDescription_Dev& desc);
50 virtual ~Font();
51
52 // Resource.
53 virtual ppapi::thunk::PPB_Font_API* AsPPB_Font_API() OVERRIDE;
54
55 // PPB_Font_API implementation.
56 virtual PP_Bool Describe(PP_FontDescription_Dev* description,
57 PP_FontMetrics_Dev* metrics) OVERRIDE;
58 virtual PP_Bool DrawTextAt(PP_Resource image_data,
59 const PP_TextRun_Dev* text,
60 const PP_Point* position,
61 uint32_t color,
62 const PP_Rect* clip,
63 PP_Bool image_data_is_opaque) OVERRIDE;
64 virtual int32_t MeasureText(const PP_TextRun_Dev* text) OVERRIDE;
65 virtual uint32_t CharacterOffsetForPixel(const PP_TextRun_Dev* text,
66 int32_t pixel_position) OVERRIDE;
67 virtual int32_t PixelOffsetForCharacter(const PP_TextRun_Dev* text,
68 uint32_t char_offset) OVERRIDE;
69
70 private:
71 // Posts the given closure to the WebKit thread.
72 // If |blocking| is true, the method waits on |webkit_event_| for the task to
73 // continue.
74 void RunOnWebKitThread(bool blocking, const base::Closure& task);
75
76 static void DeleteFontForwarding(
77 ppapi::WebKitForwarding::Font* font_forwarding);
78
79 base::WaitableEvent webkit_event_;
80
81 // This class owns |font_forwarding_|.
82 // |font_forwarding_| should always be used on the WebKit thread (including
83 // destruction).
84 ppapi::WebKitForwarding::Font* font_forwarding_;
85
86 DISALLOW_COPY_AND_ASSIGN(Font);
87 };
88
89 } // namespace proxy 39 } // namespace proxy
90 } // namespace ppapi 40 } // namespace ppapi
91 41
92 #endif // PPAPI_PROXY_PPB_FONT_PROXY_H_ 42 #endif // PPAPI_PROXY_PPB_FONT_PROXY_H_
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