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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_VIEWS_CONTROLS_SCROLLBAR_OVERLAY_SCROLL_BAR_H_
#define UI_VIEWS_CONTROLS_SCROLLBAR_OVERLAY_SCROLL_BAR_H_
#include "base/macros.h"
#include "ui/gfx/animation/slide_animation.h"
#include "ui/views/controls/scrollbar/base_scroll_bar.h"
namespace views {
// The transparent scrollbar which overlays its contents.
class VIEWS_EXPORT OverlayScrollBar : public BaseScrollBar {
public:
explicit OverlayScrollBar(bool horizontal);
~OverlayScrollBar() override;
protected:
// BaseScrollBar overrides:
gfx::Rect GetTrackBounds() const override;
void OnGestureEvent(ui::GestureEvent* event) override;
// ScrollBar overrides:
int GetLayoutSize() const override;
int GetContentOverlapSize() const override;
void OnMouseEnteredScrollView(const ui::MouseEvent& event) override;
void OnMouseExitedScrollView(const ui::MouseEvent& event) override;
// View overrides:
gfx::Size GetPreferredSize() const override;
void Layout() override;
void OnPaint(gfx::Canvas* canvas) override;
private:
gfx::SlideAnimation animation_;
DISALLOW_COPY_AND_ASSIGN(OverlayScrollBar);
};
} // namespace views
#endif // UI_VIEWS_CONTROLS_SCROLLBAR_OVERLAY_SCROLL_BAR_H_
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