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
19namespace content {
20
21class 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_
77