webkit/plugins/ppapi/ppb_scrollbar_impl.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 WEBKIT_PLUGINS_PPAPI_PPB_SCROLLBAR_IMPL_H_
   6 #define WEBKIT_PLUGINS_PPAPI_PPB_SCROLLBAR_IMPL_H_
   7
   8 #include <vector>
   9
  10 #include "base/compiler_specific.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/memory/weak_ptr.h"
  13 #include "ppapi/thunk/ppb_scrollbar_api.h"
  14 #include "third_party/WebKit/Source/Platform/chromium/public/WebRect.h"
  15 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPluginScrollbarClient.h"
  16 #include "ui/gfx/rect.h"
  17 #include "webkit/plugins/ppapi/ppb_widget_impl.h"
  18
  19 namespace webkit {
  20 namespace ppapi {
  21
  22 class PPB_Scrollbar_Impl : public PPB_Widget_Impl,
  23                            public ::ppapi::thunk::PPB_Scrollbar_API,
  24                            public WebKit::WebPluginScrollbarClient {
  25  public:
  26   static PP_Resource Create(PP_Instance instance, bool vertical);
  27
  28   virtual ~PPB_Scrollbar_Impl();
  29
  30   // Resource overrides.
  31   virtual PPB_Scrollbar_API* AsPPB_Scrollbar_API() OVERRIDE;
  32   virtual void InstanceWasDeleted();
  33
  34   // PPB_Scrollbar_API implementation.
  35   virtual uint32_t GetThickness() OVERRIDE;
  36   virtual bool IsOverlay() OVERRIDE;
  37   virtual uint32_t GetValue() OVERRIDE;
  38   virtual void SetValue(uint32_t value) OVERRIDE;
  39   virtual void SetDocumentSize(uint32_t size) OVERRIDE;
  40   virtual void SetTickMarks(const PP_Rect* tick_marks, uint32_t count) OVERRIDE;
  41   virtual void ScrollBy(PP_ScrollBy_Dev unit, int32_t multiplier) OVERRIDE;
  42
  43  private:
  44   explicit PPB_Scrollbar_Impl(PP_Instance instance);
  45   void Init(bool vertical);
  46
  47   // PPB_Widget private implementation.
  48   virtual PP_Bool PaintInternal(const gfx::Rect& rect,
  49                                 PPB_ImageData_Impl* image) OVERRIDE;
  50   virtual PP_Bool HandleEventInternal(
  51       const ::ppapi::InputEventData& data) OVERRIDE;
  52   virtual void SetLocationInternal(const PP_Rect* location) OVERRIDE;
  53
  54   // WebKit::WebPluginScrollbarClient implementation.
  55   virtual void valueChanged(WebKit::WebPluginScrollbar* scrollbar) OVERRIDE;
  56   virtual void overlayChanged(WebKit::WebPluginScrollbar* scrollbar) OVERRIDE;
  57   virtual void invalidateScrollbarRect(WebKit::WebPluginScrollbar* scrollbar,
  58                                        const WebKit::WebRect& rect) OVERRIDE;
  59   virtual void getTickmarks(
  60       WebKit::WebPluginScrollbar* scrollbar,
  61       WebKit::WebVector<WebKit::WebRect>* tick_marks) const OVERRIDE;
  62
  63   void NotifyInvalidate();
  64
  65   gfx::Rect dirty_;
  66   std::vector<WebKit::WebRect> tickmarks_;
  67   scoped_ptr<WebKit::WebPluginScrollbar> scrollbar_;
  68
  69   // Used so that the post task for Invalidate doesn't keep an extra reference.
  70   base::WeakPtrFactory<PPB_Scrollbar_Impl> weak_ptr_factory_;
  71
  72   DISALLOW_COPY_AND_ASSIGN(PPB_Scrollbar_Impl);
  73 };
  74
  75 }  // namespace ppapi
  76 }  // namespace webkit
  77
  78 #endif  // WEBKIT_PLUGINS_PPAPI_PPB_SCROLLBAR_IMPL_H_