third_party/WebKit/Source/platform/exported/WebScrollbarThemeClientImpl.h

   1 /*
   2  * Copyright (C) 2012 Google Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  *
   8  * 1.  Redistributions of source code must retain the above copyright
   9  *     notice, this list of conditions and the following disclaimer.
  10  * 2.  Redistributions in binary form must reproduce the above copyright
  11  *     notice, this list of conditions and the following disclaimer in the
  12  *     documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
  15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  16  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  17  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  18  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  19  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  20  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  21  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef WebScrollbarThemeClientImpl_h
  27 #define WebScrollbarThemeClientImpl_h
  28
  29 #include "platform/PlatformExport.h"
  30 #include "platform/scroll/ScrollbarThemeClient.h"
  31 #include "public/platform/WebScrollbar.h"
  32 #include "wtf/Noncopyable.h"
  33
  34 namespace blink {
  35
  36 // Adapts a WebScrollbar to the ScrollbarThemeClient interface
  37 class PLATFORM_EXPORT WebScrollbarThemeClientImpl : public ScrollbarThemeClient {
  38     WTF_MAKE_NONCOPYABLE(WebScrollbarThemeClientImpl);
  39 public:
  40     // Caller must retain ownership of this pointer and ensure that its lifetime
  41     // exceeds this instance.
  42     WebScrollbarThemeClientImpl(WebScrollbar*);
  43     ~WebScrollbarThemeClientImpl() override;
  44
  45     // Implement ScrollbarThemeClient interface
  46     int x() const override;
  47     int y() const override;
  48     int width() const override;
  49     int height() const override;
  50     IntSize size() const override;
  51     IntPoint location() const override;
  52     Widget* parent() const override;
  53     Widget* root() const override;
  54     void setFrameRect(const IntRect&) override;
  55     IntRect frameRect() const override;
  56     void invalidate() override;
  57     void invalidateRect(const IntRect&) override;
  58     ScrollbarOverlayStyle scrollbarOverlayStyle() const override;
  59     void getTickmarks(Vector<IntRect>&) const override;
  60     bool isScrollableAreaActive() const override;
  61     IntPoint convertFromContainingWindow(const IntPoint&) override;
  62     bool isCustomScrollbar() const override;
  63     ScrollbarOrientation orientation() const override;
  64     bool isLeftSideVerticalScrollbar() const override;
  65     int value() const override;
  66     float currentPos() const override;
  67     int visibleSize() const override;
  68     int totalSize() const override;
  69     int maximum() const override;
  70     ScrollbarControlSize controlSize() const override;
  71     ScrollbarPart pressedPart() const override;
  72     ScrollbarPart hoveredPart() const override;
  73     void styleChanged() override;
  74     void visibilityChanged() override;
  75     bool enabled() const override;
  76     void setEnabled(bool) override;
  77     bool isOverlayScrollbar() const override;
  78     bool isAlphaLocked() const override;
  79     void setIsAlphaLocked(bool) override;
  80     float elasticOverscroll() const override;
  81     void setElasticOverscroll(float) override;
  82     DisplayItemClient displayItemClient() const override;
  83     String debugName() const override;
  84
  85 private:
  86     WebScrollbar* m_scrollbar;
  87 };
  88
  89 } // namespace blink
  90
  91 #endif // WebScrollbarThemeClientImpl_h