Converts mash to use the common non-client frame

ash/mus/frame/caption_buttons/frame_caption_button.h

-// Copyright 2015 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 ASH_MUS_FRAME_CAPTION_BUTTONS_FRAME_CAPTION_BUTTON_H_
-#define ASH_MUS_FRAME_CAPTION_BUTTONS_FRAME_CAPTION_BUTTON_H_
-
-#include <memory>
-
-#include "ash/mus/frame/caption_buttons/caption_button_types.h"
-#include "base/macros.h"
-#include "ui/gfx/image/image_skia.h"
-#include "ui/views/controls/button/custom_button.h"
-
-namespace gfx {
-class SlideAnimation;
-}
-
-namespace ash {
-namespace mus {
-
-// Base class for the window caption buttons (minimize, maximize, restore,
-// close).
-class FrameCaptionButton : public views::CustomButton {
- public:
-  enum Animate { ANIMATE_YES, ANIMATE_NO };
-
-  static const char kViewClassName[];
-
-  FrameCaptionButton(views::ButtonListener* listener, CaptionButtonIcon icon);
-  ~FrameCaptionButton() override;
-
-  // Sets the images to use to paint the button. If |animate| is ANIMATE_YES,
-  // the button crossfades to the new visuals. If the image ids match those
-  // currently used by the button and |animate| is ANIMATE_NO the crossfade
-  // animation is progressed to the end.
-  void SetImages(CaptionButtonIcon icon,
-                 Animate animate,
-                 int icon_image_id,
-                 int hovered_background_image_id,
-                 int pressed_background_image_id);
-
-  // Returns true if the button is crossfading to new visuals set in
-  // SetImages().
-  bool IsAnimatingImageSwap() const;
-
-  // Sets the alpha to use for painting. Used to animate visibility changes.
-  void SetAlpha(int alpha);
-
-  // views::View overrides:
-  gfx::Size GetPreferredSize() const override;
-  const char* GetClassName() const override;
-  void OnPaint(gfx::Canvas* canvas) override;
-
-  void set_paint_as_active(bool paint_as_active) {
-    paint_as_active_ = paint_as_active;
-  }
-
-  CaptionButtonIcon icon() const { return icon_; }
-
-  int icon_image_id() const { return icon_image_id_; }
-
- protected:
-  // views::CustomButton override:
-  void OnGestureEvent(ui::GestureEvent* event) override;
-
- private:
-  // Paints |to_center| centered within the button with |alpha|.
-  void PaintCentered(gfx::Canvas* canvas,
-                     const gfx::ImageSkia& to_center,
-                     int alpha);
-
-  // The button's current icon.
-  CaptionButtonIcon icon_;
-
-  // Whether the button should be painted as active.
-  bool paint_as_active_;
-
-  // Current alpha to use for painting.
-  int alpha_;
-
-  // The images and image ids used to paint the button.
-  int icon_image_id_;
-  int hovered_background_image_id_;
-  int pressed_background_image_id_;
-  gfx::ImageSkia icon_image_;
-  gfx::ImageSkia hovered_background_image_;
-  gfx::ImageSkia pressed_background_image_;
-
-  // The icon image to crossfade from.
-  gfx::ImageSkia crossfade_icon_image_;
-
-  // Crossfade animation started when the button's images are changed by
-  // SetImages().
-  std::unique_ptr<gfx::SlideAnimation> swap_images_animation_;
-
-  DISALLOW_COPY_AND_ASSIGN(FrameCaptionButton);
-};
-
-}  // namespace mus
-}  // namespace ash
-
-#endif  // ASH_MUS_FRAME_CAPTION_BUTTONS_FRAME_CAPTION_BUTTON_H_