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// 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;
// Updates the x inset of the leftmost view in the header.
virtual void UpdateLeftViewXInset(int left_view_x_inset) = 0;
};
} // namespace ash
#endif // ASH_FRAME_HEADER_PAINTER_H_
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