| // Copyright 2013 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_HEADER_PAINTER_H_ |
| #define ASH_FRAME_HEADER_PAINTER_H_ |
| |
| #include "ash/ash_export.h" |
| |
| namespace gfx { |
| class Canvas; |
| } |
| |
| namespace ash { |
| |
| // Helper class for painting the window header. |
| class ASH_EXPORT HeaderPainter { |
| public: |
| enum Mode { MODE_ACTIVE, MODE_INACTIVE }; |
| |
| virtual ~HeaderPainter() {} |
| |
| // Returns the header's minimum width. |
| virtual int GetMinimumHeaderWidth() const = 0; |
| |
| // Paints the header. |
| virtual void PaintHeader(gfx::Canvas* canvas, Mode mode) = 0; |
| |
| // Performs layout for the header. |
| virtual void LayoutHeader() = 0; |
| |
| // Get the height of the header. |
| virtual int GetHeaderHeight() const = 0; |
| |
| // Gets / sets how much of the header is painted. This allows the header to |
| // paint under things (like the tabstrip) which have transparent / |
| // non-painting sections. This height does not affect LayoutHeader(). |
| virtual int GetHeaderHeightForPainting() const = 0; |
| virtual void SetHeaderHeightForPainting(int height_for_painting) = 0; |
| |
| // Schedule a re-paint of the entire title. |
| virtual void SchedulePaintForTitle() = 0; |
| }; |
| |
| } // namespace ash |
| |
| #endif // ASH_FRAME_HEADER_PAINTER_H_ |