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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 UI_GFX_SCOPED_CANVAS_H_
#define UI_GFX_SCOPED_CANVAS_H_
#include "base/macros.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/gfx_export.h"
namespace gfx {
// Saves the drawing state, and restores the state when going out of scope.
class GFX_EXPORT ScopedCanvas {
public:
explicit ScopedCanvas(gfx::Canvas* canvas) : canvas_(canvas) {
if (canvas_)
canvas_->Save();
}
~ScopedCanvas() {
if (canvas_)
canvas_->Restore();
}
private:
gfx::Canvas* canvas_;
DISALLOW_COPY_AND_ASSIGN(ScopedCanvas);
};
// Saves the drawing state. If |flip| is true, and the UI is in RTL layout,
// applies a transform such that anything drawn inside the supplied width will
// be flipped horizontally.
class GFX_EXPORT ScopedRTLFlipCanvas {
public:
ScopedRTLFlipCanvas(gfx::Canvas* canvas, int width, bool flip = true);
~ScopedRTLFlipCanvas() {}
private:
ScopedCanvas canvas_;
DISALLOW_COPY_AND_ASSIGN(ScopedRTLFlipCanvas);
};
} // namespace gfx
#endif // UI_GFX_SCOPED_CANVAS_H_
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