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1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- |
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2 * This Source Code Form is subject to the terms of the Mozilla Public |
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3 * License, v. 2.0. If a copy of the MPL was not distributed with this |
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4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
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5 |
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6 #ifndef GFX_AUTOMASKDATA_H_ |
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7 #define GFX_AUTOMASKDATA_H_ |
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8 |
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9 #include "mozilla/layers/LayersSurfaces.h" // for SurfaceDescriptor |
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10 |
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11 namespace mozilla { |
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12 namespace layers { |
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13 |
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14 /** |
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15 * Drawing with a mask requires a mask surface and a transform. |
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16 * |
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17 * This helper class manages the SourceSurface logic. |
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18 */ |
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19 class MOZ_STACK_CLASS AutoMoz2DMaskData { |
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20 public: |
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21 AutoMoz2DMaskData() { } |
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22 ~AutoMoz2DMaskData() { } |
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23 |
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24 void Construct(const gfx::Matrix& aTransform, |
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25 gfx::SourceSurface* aSurface) |
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26 { |
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27 MOZ_ASSERT(!IsConstructed()); |
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28 mTransform = aTransform; |
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29 mSurface = aSurface; |
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30 } |
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31 |
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32 gfx::SourceSurface* GetSurface() |
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33 { |
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34 MOZ_ASSERT(IsConstructed()); |
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35 return mSurface.get(); |
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36 } |
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37 |
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38 const gfx::Matrix& GetTransform() |
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39 { |
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40 MOZ_ASSERT(IsConstructed()); |
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41 return mTransform; |
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42 } |
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43 |
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44 private: |
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45 bool IsConstructed() |
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46 { |
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47 return !!mSurface; |
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48 } |
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49 |
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50 gfx::Matrix mTransform; |
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51 RefPtr<gfx::SourceSurface> mSurface; |
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52 |
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53 AutoMoz2DMaskData(const AutoMoz2DMaskData&) MOZ_DELETE; |
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54 AutoMoz2DMaskData& operator=(const AutoMoz2DMaskData&) MOZ_DELETE; |
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55 }; |
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56 |
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57 } |
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58 } |
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59 |
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60 #endif // GFX_AUTOMASKDATA_H_ |