// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_SYSTEM_UNIFIED_COLLAPSE_BUTTON_H_
#define ASH_SYSTEM_UNIFIED_COLLAPSE_BUTTON_H_
#include "ash/style/icon_button.h"
#include "ui/base/metadata/metadata_header_macros.h"
namespace ash {
// The button with `kUnifiedMenuExpandIcon`. This button can be set as expanded
// or collapsed through SetExpandedAmount and the icon will be rotated on the
// `expanded_amount_`. Expanded is the default state.
class CollapseButton : public IconButton {
METADATA_HEADER(CollapseButton, IconButton)
public:
explicit CollapseButton(PressedCallback callback);
CollapseButton(const CollapseButton&) = delete;
CollapseButton& operator=(const CollapseButton&) = delete;
~CollapseButton() override;
// Change the expanded state. The icon will change.
void SetExpandedAmount(double expanded_amount);
// IconButton:
void PaintButtonContents(gfx::Canvas* canvas) override;
private:
double expanded_amount_ = 1.0;
};
} // namespace ash
#endif // ASH_SYSTEM_UNIFIED_COLLAPSE_BUTTON_H_