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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef ASH_FRAME_HEADER_PAINTER_UTIL_H_
      6 #define ASH_FRAME_HEADER_PAINTER_UTIL_H_
      7 
      8 #include "ash/ash_export.h"
      9 #include "base/macros.h"
     10 
     11 namespace gfx {
     12 class FontList;
     13 class Rect;
     14 }
     15 namespace views {
     16 class View;
     17 class Widget;
     18 }
     19 
     20 namespace ash {
     21 
     22 // Static-only helper class for functionality used accross multiple
     23 // implementations of HeaderPainter.
     24 class ASH_EXPORT HeaderPainterUtil {
     25  public:
     26   // Returns the radius of the header's corners when the window is restored.
     27   static int GetTopCornerRadiusWhenRestored();
     28 
     29   // Returns the default distance between the left edge of the window and the
     30   // leftmost view in the header.
     31   static int GetDefaultLeftViewXInset();
     32 
     33   // Returns the amount that the frame background is inset from the left edge of
     34   // the window.
     35   static int GetThemeBackgroundXInset();
     36 
     37   // Returns the bounds for the header's title given the views to the left and
     38   // right of the title, and the font used.
     39   // |left_view| should be NULL if there is no view to the left of the title.
     40   static gfx::Rect GetTitleBounds(const views::View* left_view,
     41                                   const views::View* right_view,
     42                                   const gfx::FontList& title_font_list);
     43 
     44   // Returns true if the header for |widget| can animate to new visuals when the
     45   // widget's activation changes. Returns false if the header should switch to
     46   // new visuals instantaneously.
     47   static bool CanAnimateActivation(views::Widget* widget);
     48 
     49  private:
     50   DISALLOW_IMPLICIT_CONSTRUCTORS(HeaderPainterUtil);
     51 };
     52 
     53 }  // namespace ash
     54 
     55 #endif  // ASH_FRAME_HEADER_PAINTER_UTIL_H_
     56