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/*
* Copyright (C) 2011 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 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 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 THIRD_PARTY_BLINK_RENDERER_CORE_SCROLL_SCROLLBAR_THEME_OVERLAY_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_SCROLL_SCROLLBAR_THEME_OVERLAY_H_
#include "third_party/blink/renderer/core/scroll/scrollbar_theme.h"
namespace blink {
// This scrollbar theme is used to get overlay scrollbar for platforms other
// than Mac. Mac's overlay scrollbars are in ScrollbarThemeMac*.
class CORE_EXPORT ScrollbarThemeOverlay : public ScrollbarTheme {
public:
static ScrollbarThemeOverlay& GetInstance();
~ScrollbarThemeOverlay() override = default;
bool ShouldRepaintAllPartsOnInvalidation() const override;
ScrollbarPart PartsToInvalidateOnThumbPositionChange(
const Scrollbar&,
float old_position,
float new_position) const override;
int ScrollbarThickness(ScrollbarControlSize) override;
int ScrollbarMargin() const override;
bool UsesOverlayScrollbars() const override;
base::TimeDelta OverlayScrollbarFadeOutDelay() const override;
base::TimeDelta OverlayScrollbarFadeOutDuration() const override;
int ThumbLength(const Scrollbar&) override;
bool NativeThemeHasButtons() override { return false; }
bool HasThumb(const Scrollbar&) override;
IntRect BackButtonRect(const Scrollbar&) override;
IntRect ForwardButtonRect(const Scrollbar&) override;
IntRect TrackRect(const Scrollbar&) override;
IntRect ThumbRect(const Scrollbar&) override;
int ThumbThickness(const Scrollbar&) override;
int ThumbThickness() { return thumb_thickness_; }
void PaintThumb(GraphicsContext&, const Scrollbar&, const IntRect&) override;
bool UsesNinePatchThumbResource() const override;
IntSize NinePatchThumbCanvasSize(const Scrollbar&) const override;
IntRect NinePatchThumbAperture(const Scrollbar&) const override;
int MinimumThumbLength(const Scrollbar&) override;
protected:
FRIEND_TEST_ALL_PREFIXES(ScrollbarThemeOverlayTest, PaintInvalidation);
ScrollbarPart HitTest(const Scrollbar&, const IntPoint&) override;
ScrollbarThemeOverlay(int thumb_thickness, int scrollbar_margin);
private:
int thumb_thickness_;
int scrollbar_margin_;
};
} // namespace blink
#endif