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1 /* This Source Code Form is subject to the terms of the Mozilla Public |
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2 * License, v. 2.0. If a copy of the MPL was not distributed with this |
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3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
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4 |
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5 #ifndef mozilla_PaintTracker_h |
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6 #define mozilla_PaintTracker_h |
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7 |
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8 #include "mozilla/Attributes.h" |
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9 #include "nsDebug.h" |
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10 |
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11 namespace mozilla { |
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12 |
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13 class MOZ_STACK_CLASS PaintTracker |
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14 { |
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15 public: |
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16 PaintTracker() { |
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17 ++gPaintTracker; |
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18 } |
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19 ~PaintTracker() { |
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20 NS_ASSERTION(gPaintTracker > 0, "Mismatched constructor/destructor"); |
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21 --gPaintTracker; |
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22 } |
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23 |
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24 static bool IsPainting() { |
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25 return !!gPaintTracker; |
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26 } |
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27 |
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28 private: |
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29 static int gPaintTracker; |
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30 }; |
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31 |
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32 } // namespace mozilla |
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33 |
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34 #endif // mozilla_PaintTracker_h |