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/geometry/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   PPB_Scrollbar_API* AsPPB_Scrollbar_API() override;
  29   void InstanceWasDeleted() override;
  30
  31   // PPB_Scrollbar_API implementation.
  32   uint32_t GetThickness() override;
  33   bool IsOverlay() override;
  34   uint32_t GetValue() override;
  35   void SetValue(uint32_t value) override;
  36   void SetDocumentSize(uint32_t size) override;
  37   void SetTickMarks(const PP_Rect* tick_marks, uint32_t count) override;
  38   void ScrollBy(PP_ScrollBy_Dev unit, int32_t multiplier) override;
  39
  40  private:
  41   ~PPB_Scrollbar_Impl() override;
  42
  43   explicit PPB_Scrollbar_Impl(PP_Instance instance);
  44   void Init(bool vertical);
  45
  46   // PPB_Widget private implementation.
  47   PP_Bool PaintInternal(const gfx::Rect& rect,
  48                         PPB_ImageData_Impl* image) override;
  49   PP_Bool HandleEventInternal(const ppapi::InputEventData& data) override;
  50   void SetLocationInternal(const PP_Rect* location) override;
  51
  52   // blink::WebPluginScrollbarClient implementation.
  53   virtual void valueChanged(blink::WebPluginScrollbar* scrollbar) override;
  54   virtual void overlayChanged(blink::WebPluginScrollbar* scrollbar) override;
  55   virtual void invalidateScrollbarRect(blink::WebPluginScrollbar* scrollbar,
  56                                        const blink::WebRect& rect) override;
  57   virtual void getTickmarks(blink::WebPluginScrollbar* scrollbar,
  58                             blink::WebVector<blink::WebRect>* tick_marks) const
  59       override;
  60
  61   void NotifyInvalidate();
  62
  63   gfx::Rect dirty_;
  64   std::vector<blink::WebRect> tickmarks_;
  65   scoped_ptr<blink::WebPluginScrollbar> scrollbar_;
  66
  67   // Used so that the post task for Invalidate doesn't keep an extra reference.
  68   base::WeakPtrFactory<PPB_Scrollbar_Impl> weak_ptr_factory_;
  69
  70   DISALLOW_COPY_AND_ASSIGN(PPB_Scrollbar_Impl);
  71 };
  72
  73 }  // namespace content
  74
  75 #endif  // CONTENT_RENDERER_PEPPER_PPB_SCROLLBAR_IMPL_H_