native_theme_aura.h

// Copyright (c) 2012 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_NATIVE_THEME_NATIVE_THEME_AURA_H_
#define UI_NATIVE_THEME_NATIVE_THEME_AURA_H_

#include "base/macros.h"
#include "ui/native_theme/native_theme_base.h"

namespace ui {

// Aura implementation of native theme support.
class NATIVE_THEME_EXPORT NativeThemeAura : public NativeThemeBase {
 protected:
  friend class NativeTheme;
  friend class NativeThemeAuraTest;

  explicit NativeThemeAura(bool use_overlay_scrollbars);
  ~NativeThemeAura() override;

  static NativeThemeAura* instance();
  static NativeThemeAura* web_instance();

  // Overridden from NativeThemeBase:
  SkColor GetSystemColor(ColorId color_id) const override;
  void PaintMenuPopupBackground(
      cc::PaintCanvas* canvas,
      const gfx::Size& size,
      const MenuBackgroundExtraParams& menu_background) const override;
  void PaintMenuItemBackground(
      cc::PaintCanvas* canvas,
      State state,
      const gfx::Rect& rect,
      const MenuItemExtraParams& menu_item) const override;
  void PaintArrowButton(cc::PaintCanvas* gc,
                        const gfx::Rect& rect,
                        Part direction,
                        State state) const override;
  void PaintScrollbarTrack(cc::PaintCanvas* canvas,
                           Part part,
                           State state,
                           const ScrollbarTrackExtraParams& extra_params,
                           const gfx::Rect& rect) const override;
  void PaintScrollbarThumb(cc::PaintCanvas* canvas,
                           Part part,
                           State state,
                           const gfx::Rect& rect,
                           ScrollbarOverlayColorTheme theme) const override;
  void PaintScrollbarCorner(cc::PaintCanvas* canvas,
                            State state,
                            const gfx::Rect& rect) const override;
  gfx::Size GetPartSize(Part part,
                        State state,
                        const ExtraParams& extra) const override;
  bool SupportsNinePatch(Part part) const override;
  gfx::Size GetNinePatchCanvasSize(Part part) const override;
  gfx::Rect GetNinePatchAperture(Part part) const override;

 private:
  bool use_overlay_scrollbars_;

  DISALLOW_COPY_AND_ASSIGN(NativeThemeAura);
};

}  // namespace ui

#endif  // UI_NATIVE_THEME_NATIVE_THEME_AURA_H_