| /* |
| * Copyright (C) 2008 Apple 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. ``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 |
| * 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 THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_CUSTOM_SCROLLBAR_THEME_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_CUSTOM_SCROLLBAR_THEME_H_ |
| |
| #include "third_party/blink/renderer/core/scroll/scrollbar_theme.h" |
| |
| namespace blink { |
| |
| class CustomScrollbar; |
| class LayoutCustomScrollbarPart; |
| class WebMouseEvent; |
| struct PhysicalOffset; |
| struct PhysicalRect; |
| |
| class CustomScrollbarTheme final : public ScrollbarTheme { |
| public: |
| ~CustomScrollbarTheme() override = default; |
| |
| int ScrollbarThickness(ScrollbarControlSize control_size) override { |
| return GetTheme().ScrollbarThickness(control_size); |
| } |
| |
| bool NativeThemeHasButtons() override { |
| return GetTheme().NativeThemeHasButtons(); |
| } |
| |
| void PaintScrollCorner(GraphicsContext&, |
| const Scrollbar* vertical_scrollbar, |
| const DisplayItemClient&, |
| const IntRect& corner_rect, |
| WebColorScheme color_scheme) override; |
| |
| bool ShouldCenterOnThumb(const Scrollbar& scrollbar, |
| const WebMouseEvent& event) override { |
| return GetTheme().ShouldCenterOnThumb(scrollbar, event); |
| } |
| bool ShouldSnapBackToDragOrigin(const Scrollbar& scrollbar, |
| const WebMouseEvent& event) override { |
| return GetTheme().ShouldSnapBackToDragOrigin(scrollbar, event); |
| } |
| |
| base::TimeDelta InitialAutoscrollTimerDelay() override { |
| return GetTheme().InitialAutoscrollTimerDelay(); |
| } |
| base::TimeDelta AutoscrollTimerDelay() override { |
| return GetTheme().AutoscrollTimerDelay(); |
| } |
| |
| void RegisterScrollbar(Scrollbar& scrollbar) override { |
| return GetTheme().RegisterScrollbar(scrollbar); |
| } |
| |
| int MinimumThumbLength(const Scrollbar&) override; |
| |
| void ButtonSizesAlongTrackAxis(const Scrollbar&, |
| int& before_size, |
| int& after_size); |
| |
| static CustomScrollbarTheme* GetCustomScrollbarTheme(); |
| |
| static void PaintIntoRect(const LayoutCustomScrollbarPart&, |
| GraphicsContext&, |
| const PhysicalOffset& paint_offset, |
| const PhysicalRect&, |
| const CustomScrollbar* = nullptr); |
| |
| protected: |
| ScrollbarPart HitTest(const Scrollbar&, const IntPoint&) override; |
| |
| bool HasButtons(const Scrollbar&) override; |
| bool HasThumb(const Scrollbar&) override; |
| |
| IntRect BackButtonRect(const Scrollbar&) override; |
| IntRect ForwardButtonRect(const Scrollbar&) override; |
| IntRect TrackRect(const Scrollbar&) override; |
| |
| void PaintTrackAndButtons(GraphicsContext&, |
| const Scrollbar&, |
| const IntPoint&) override; |
| void PaintButton(GraphicsContext&, |
| const Scrollbar&, |
| const IntRect&, |
| ScrollbarPart) override; |
| void PaintThumb(GraphicsContext&, const Scrollbar&, const IntRect&) override; |
| void PaintTickmarks(GraphicsContext&, |
| const Scrollbar&, |
| const IntRect&) override; |
| |
| IntRect ConstrainTrackRectToTrackPieces(const Scrollbar&, |
| const IntRect&) override; |
| |
| private: |
| IntRect ButtonRect(const Scrollbar&, ScrollbarPart); |
| void PaintScrollbarBackground(GraphicsContext&, const Scrollbar&); |
| void PaintTrackBackground(GraphicsContext&, const Scrollbar&, const IntRect&); |
| void PaintTrackPiece(GraphicsContext&, |
| const Scrollbar&, |
| const IntRect&, |
| ScrollbarPart); |
| void PaintPart(GraphicsContext&, |
| const Scrollbar&, |
| const IntRect&, |
| ScrollbarPart); |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_CUSTOM_SCROLLBAR_THEME_H_ |