| // 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_ |