ash/system/unified/custom_shape_button.h

// Copyright 2019 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_CUSTOM_SHAPE_BUTTON_H_
#define ASH_SYSTEM_UNIFIED_CUSTOM_SHAPE_BUTTON_H_

#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/views/controls/button/image_button.h"

namespace ash {

// Abstract base class of buttons that have custom shape with Material Design
// ink drop.
class CustomShapeButton : public views::ImageButton {
  METADATA_HEADER(CustomShapeButton, views::ImageButton)

 public:
  explicit CustomShapeButton(PressedCallback callback);

  CustomShapeButton(const CustomShapeButton&) = delete;
  CustomShapeButton& operator=(const CustomShapeButton&) = delete;

  ~CustomShapeButton() override;

  // Return the custom shape for the button in SkPath.
  virtual SkPath CreateCustomShapePath(const gfx::Rect& bounds) const = 0;

  // views::ImageButton:
  void PaintButtonContents(gfx::Canvas* canvas) override;

 protected:
  void PaintCustomShapePath(gfx::Canvas* canvas);
};

}  // namespace ash

#endif  // ASH_SYSTEM_UNIFIED_CUSTOM_SHAPE_BUTTON_H_