content/renderer/pepper/pepper_graphics_2d_host.h

   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_RENDERER_PEPPER_PEPPER_GRAPHICS_2D_HOST_H_
   6 #define CONTENT_RENDERER_PEPPER_PEPPER_GRAPHICS_2D_HOST_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "base/memory/weak_ptr.h"
  10 #include "content/common/content_export.h"
  11 #include "ppapi/c/ppb_graphics_2d.h"
  12 #include "ppapi/host/host_message_context.h"
  13 #include "ppapi/host/resource_host.h"
  14 #include "webkit/plugins/ppapi/plugin_delegate.h"
  15 #include "webkit/plugins/ppapi/ppb_graphics_2d_impl.h"
  16
  17 namespace webkit {
  18 namespace ppapi {
  19 class PPB_ImageData_Impl;
  20 class PluginInstance;
  21 }
  22 }
  23
  24 namespace content {
  25
  26 class RendererPpapiHost;
  27
  28 class CONTENT_EXPORT PepperGraphics2DHost
  29     : public ppapi::host::ResourceHost,
  30       public webkit::ppapi::PluginDelegate::PlatformGraphics2D,
  31       public base::SupportsWeakPtr<PepperGraphics2DHost> {
  32  public:
  33   static PepperGraphics2DHost* Create(RendererPpapiHost* host,
  34                                       PP_Instance instance,
  35                                       PP_Resource resource,
  36                                       const PP_Size& size,
  37                                       PP_Bool is_always_opaque);
  38
  39   virtual ~PepperGraphics2DHost();
  40
  41   virtual int32_t OnResourceMessageReceived(
  42       const IPC::Message& msg,
  43       ppapi::host::HostMessageContext* context) OVERRIDE;
  44
  45   // PlatformGraphics2D overrides.
  46   virtual bool ReadImageData(PP_Resource image,
  47                              const PP_Point* top_left) OVERRIDE;
  48   virtual bool BindToInstance(
  49       webkit::ppapi::PluginInstance* new_instance) OVERRIDE;
  50   virtual void Paint(WebKit::WebCanvas* canvas,
  51                      const gfx::Rect& plugin_rect,
  52                      const gfx::Rect& paint_rect) OVERRIDE;
  53   virtual void ViewWillInitiatePaint() OVERRIDE;
  54   virtual void ViewInitiatedPaint() OVERRIDE;
  55   virtual void ViewFlushedPaint() OVERRIDE;
  56   virtual void SetScale(float scale) OVERRIDE;
  57   virtual float GetScale() const OVERRIDE;
  58   virtual bool IsAlwaysOpaque() const OVERRIDE;
  59   virtual webkit::ppapi::PPB_ImageData_Impl* ImageData() OVERRIDE;
  60   virtual bool IsGraphics2DHost() const OVERRIDE;
  61
  62  private:
  63   PepperGraphics2DHost(RendererPpapiHost* host,
  64                        PP_Instance instance,
  65                        PP_Resource resource);
  66
  67   int32_t OnHostMsgPaintImageData(ppapi::host::HostMessageContext* context,
  68                                   const ppapi::HostResource& image_data,
  69                                   const PP_Point& top_left,
  70                                   bool src_rect_specified,
  71                                   const PP_Rect& src_rect);
  72   int32_t OnHostMsgScroll(ppapi::host::HostMessageContext* context,
  73                           bool clip_specified,
  74                           const PP_Rect& clip,
  75                           const PP_Point& amount);
  76   int32_t OnHostMsgReplaceContents(ppapi::host::HostMessageContext* context,
  77                                    const ppapi::HostResource& image_data);
  78   int32_t OnHostMsgFlush(ppapi::host::HostMessageContext* context);
  79   int32_t OnHostMsgSetScale(ppapi::host::HostMessageContext* context,
  80                             float scale);
  81   int32_t OnHostMsgReadImageData(ppapi::host::HostMessageContext* context,
  82                                  PP_Resource image,
  83                                  const PP_Point& top_left);
  84
  85   static void SendFlushACKToPlugin(void* data, int32_t pp_error);
  86
  87   // TODO: merge this delegation into this host class.
  88   scoped_refptr<webkit::ppapi::PPB_Graphics2D_Impl> graphics_2d_;
  89
  90   ppapi::host::ReplyMessageContext flush_reply_context_;
  91
  92   bool is_running_in_process_;
  93
  94   DISALLOW_COPY_AND_ASSIGN(PepperGraphics2DHost);
  95 };
  96
  97 }  // namespace content
  98
  99 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_GRAPHICS_2D_HOST_H_