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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef PPAPI_PROXY_PPB_FONT_PROXY_H_
#define PPAPI_PROXY_PPB_FONT_PROXY_H_
#include "base/basictypes.h"
#include "base/synchronization/waitable_event.h"
#include "ppapi/proxy/host_resource.h"
#include "ppapi/proxy/interface_proxy.h"
#include "ppapi/proxy/plugin_resource.h"
#include "ppapi/shared_impl/webkit_forwarding.h"
#include "ppapi/thunk/ppb_font_api.h"
struct PPB_Font_Dev;
namespace pp {
namespace proxy {
class SerializedVarReceiveInput;
class PPB_Font_Proxy : public InterfaceProxy {
public:
PPB_Font_Proxy(Dispatcher* dispatcher, const void* target_interface);
virtual ~PPB_Font_Proxy();
static const Info* GetInfo();
// InterfaceProxy implementation.
virtual bool OnMessageReceived(const IPC::Message& msg);
private:
DISALLOW_COPY_AND_ASSIGN(PPB_Font_Proxy);
};
class Font : public PluginResource,
public ppapi::thunk::PPB_Font_API {
public:
// Note that there isn't a "real" resource in the renderer backing a font,
// it lives entirely in the plugin process. So the resource ID in the host
// resource should be 0. However, various code assumes the instance in the
// host resource is valid (this is how resources are associated with
// instances), so that should be set.
Font(const HostResource& resource, const PP_FontDescription_Dev& desc);
virtual ~Font();
// ResourceObjectBase.
virtual ppapi::thunk::PPB_Font_API* AsFont_API() OVERRIDE;
// PluginResource overrides.
virtual Font* AsFont() OVERRIDE;
// PPB_Font_API implementation.
virtual PP_Bool Describe(PP_FontDescription_Dev* description,
PP_FontMetrics_Dev* metrics) OVERRIDE;
virtual PP_Bool DrawTextAt(PP_Resource image_data,
const PP_TextRun_Dev* text,
const PP_Point* position,
uint32_t color,
const PP_Rect* clip,
PP_Bool image_data_is_opaque) OVERRIDE;
virtual int32_t MeasureText(const PP_TextRun_Dev* text) OVERRIDE;
virtual uint32_t CharacterOffsetForPixel(const PP_TextRun_Dev* text,
int32_t pixel_position) OVERRIDE;
virtual int32_t PixelOffsetForCharacter(const PP_TextRun_Dev* text,
uint32_t char_offset) OVERRIDE;
private:
// Posts the given closure to the WebKit thread and waits on the
// webkit_event_ for the task to continue.
void RunOnWebKitThread(const base::Closure& task);
base::WaitableEvent webkit_event_;
scoped_ptr<pp::shared_impl::WebKitForwarding::Font> font_forwarding_;
DISALLOW_COPY_AND_ASSIGN(Font);
};
} // namespace proxy
} // namespace pp
#endif // PPAPI_PROXY_PPB_FONT_PROXY_H_
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