ash/frame/frame_header_util.h

// Copyright 2014 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_FRAME_FRAME_HEADER_UTIL_H_
#define ASH_FRAME_FRAME_HEADER_UTIL_H_

#include "ash/ash_export.h"
#include "base/macros.h"

namespace gfx {
class FontList;
class Rect;
}  // namespace gfx
namespace views {
class View;
class Widget;
}  // namespace views

namespace ash {

// Static-only helper class for functionality used across multiple
// implementations of FrameHeader.
class ASH_EXPORT FrameHeaderUtil {
 public:
  // Returns the radius of the header's corners when the window is restored.
  static int GetTopCornerRadiusWhenRestored();

  // Returns the default distance between the left edge of the window and the
  // leftmost view in the header.
  static int GetLeftViewXInset();

  // Returns the amount that the frame background is inset from the left edge of
  // the window.
  static int GetThemeBackgroundXInset();

  // Returns the available bounds for the header's title given the views to the
  // left and right of the title, and the font used. |left_view| should be null
  // if there is no view to the left of the title.
  static gfx::Rect GetAvailableTitleBounds(
      const views::View* left_view,
      const views::View* right_view,
      const gfx::FontList& title_font_list);

  // Returns true if the header for |widget| can animate to new visuals when the
  // widget's activation changes. Returns false if the header should switch to
  // new visuals instantaneously.
  static bool CanAnimateActivation(views::Widget* widget);

 private:
  DISALLOW_IMPLICIT_CONSTRUCTORS(FrameHeaderUtil);
};

}  // namespace ash

#endif  // ASH_FRAME_FRAME_HEADER_UTIL_H_