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| 1 // Copyright (C) 2013 Google Inc. All rights reserved. | |
| 2 // | |
| 3 // Redistribution and use in source and binary forms, with or without | |
| 4 // modification, are permitted provided that the following conditions are | |
| 5 // met: | |
| 6 // | |
| 7 // * Redistributions of source code must retain the above copyright | |
| 8 // notice, this list of conditions and the following disclaimer. | |
| 9 // * Redistributions in binary form must reproduce the above | |
| 10 // copyright notice, this list of conditions and the following disclaimer | |
| 11 // in the documentation and/or other materials provided with the | |
| 12 // distribution. | |
| 13 // * Neither the name of Google Inc. nor the names of its | |
| 14 // contributors may be used to endorse or promote products derived from | |
| 15 // this software without specific prior written permission. | |
| 16 // | |
| 17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 19 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 20 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 21 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 22 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 23 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 24 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 25 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 26 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 28 | |
| 29 #ifndef GraphicsContextStateSaver_h | |
| 30 #define GraphicsContextStateSaver_h | |
| 31 | |
| 32 #include "core/platform/graphics/GraphicsContext.h" | |
| 33 | |
| 34 namespace WebCore { | |
| 35 | |
| 36 class GraphicsContextStateSaver { | |
| 37 WTF_MAKE_FAST_ALLOCATED; | |
| 38 public: | |
| 39 GraphicsContextStateSaver(GraphicsContext& context, bool saveAndRestore = tr
ue) | |
| 40 : m_context(context) | |
| 41 , m_saveAndRestore(saveAndRestore) | |
| 42 { | |
| 43 if (m_saveAndRestore) | |
| 44 m_context.save(); | |
| 45 } | |
| 46 | |
| 47 ~GraphicsContextStateSaver() | |
| 48 { | |
| 49 if (m_saveAndRestore) | |
| 50 m_context.restore(); | |
| 51 } | |
| 52 | |
| 53 void save() | |
| 54 { | |
| 55 ASSERT(!m_saveAndRestore); | |
| 56 m_context.save(); | |
| 57 m_saveAndRestore = true; | |
| 58 } | |
| 59 | |
| 60 void restore() | |
| 61 { | |
| 62 ASSERT(m_saveAndRestore); | |
| 63 m_context.restore(); | |
| 64 m_saveAndRestore = false; | |
| 65 } | |
| 66 | |
| 67 GraphicsContext* context() const { return &m_context; } | |
| 68 bool saved() const { return m_saveAndRestore; } | |
| 69 | |
| 70 private: | |
| 71 GraphicsContext& m_context; | |
| 72 bool m_saveAndRestore; | |
| 73 }; | |
| 74 | |
| 75 } // namespace WebCore | |
| 76 | |
| 77 #endif // GraphicsContextStateSaver_h | |
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Chromium Code Reviews
Issue 99103006:
Moving GraphicsContext and dependencies from core to platform. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk