| /* |
| * Copyright (C) 2012 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR |
| * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef WebScrollbarImpl_h |
| #define WebScrollbarImpl_h |
| |
| #include "platform/PlatformExport.h" |
| #include "platform/heap/Handle.h" |
| #include "platform/wtf/Allocator.h" |
| #include "platform/wtf/Noncopyable.h" |
| #include "platform/wtf/PtrUtil.h" |
| #include "public/platform/WebScrollbar.h" |
| |
| #include <memory> |
| |
| namespace blink { |
| |
| class Scrollbar; |
| class PLATFORM_EXPORT WebScrollbarImpl final : public WebScrollbar { |
| USING_FAST_MALLOC(WebScrollbarImpl); |
| WTF_MAKE_NONCOPYABLE(WebScrollbarImpl); |
| |
| public: |
| static std::unique_ptr<WebScrollbarImpl> Create(Scrollbar* scrollbar) { |
| return WTF::WrapUnique(new WebScrollbarImpl(scrollbar)); |
| } |
| |
| // Implement WebScrollbar methods |
| bool IsOverlay() const override; |
| int Value() const override; |
| WebPoint Location() const override; |
| WebSize Size() const override; |
| bool Enabled() const override; |
| int Maximum() const override; |
| int TotalSize() const override; |
| bool IsScrollableAreaActive() const override; |
| bool HasTickmarks() const override; |
| void GetTickmarks(WebVector<WebRect>& tickmarks) const override; |
| ScrollbarControlSize GetControlSize() const override; |
| ScrollbarPart PressedPart() const override; |
| ScrollbarPart HoveredPart() const override; |
| WebScrollbarOverlayColorTheme ScrollbarOverlayColorTheme() const override; |
| bool IsCustomScrollbar() const override; |
| Orientation GetOrientation() const override; |
| bool IsLeftSideVerticalScrollbar() const override; |
| float ElasticOverscroll() const override; |
| void SetElasticOverscroll(float) override; |
| |
| private: |
| explicit WebScrollbarImpl(Scrollbar*); |
| |
| // Accessed by main and compositor threads, e.g., the compositor thread |
| // checks |orientation()|. |
| // |
| // TODO: minimize or avoid cross-thread use, if possible. |
| CrossThreadPersistent<Scrollbar> scrollbar_; |
| }; |
| |
| } // namespace blink |
| |
| #endif |