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