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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef PaintChunk_h |
| 6 #define PaintChunk_h |
| 7 |
| 8 #include "platform/graphics/paint/PaintProperties.h" |
| 9 #include <iosfwd> |
| 10 |
| 11 namespace blink { |
| 12 |
| 13 // A contiguous sequence of drawings with common paint properties. |
| 14 // |
| 15 // This is expected to be owned by the paint artifact which also owns the |
| 16 // related drawings. |
| 17 // |
| 18 // This is a Slimming Paint v2 class. |
| 19 struct PaintChunk { |
| 20 PaintChunk() : beginIndex(0), endIndex(0) { } |
| 21 PaintChunk(unsigned begin, unsigned end, const PaintProperties& props) |
| 22 : beginIndex(begin), endIndex(end), properties(props) { } |
| 23 |
| 24 // Index of the first drawing in this chunk. |
| 25 unsigned beginIndex; |
| 26 |
| 27 // Index of the first drawing not in this chunk, so that there are |
| 28 // |endIndex - beginIndex| drawings in the chunk. |
| 29 unsigned endIndex; |
| 30 |
| 31 // The paint properties which apply to this chunk. |
| 32 PaintProperties properties; |
| 33 }; |
| 34 |
| 35 inline bool operator==(const PaintChunk& a, const PaintChunk& b) |
| 36 { |
| 37 return a.beginIndex == b.beginIndex |
| 38 && a.endIndex == b.endIndex |
| 39 && a.properties == b.properties; |
| 40 } |
| 41 |
| 42 inline bool operator!=(const PaintChunk& a, const PaintChunk& b) |
| 43 { |
| 44 return !(a == b); |
| 45 } |
| 46 |
| 47 // Redeclared here to avoid ODR issues. |
| 48 // See platform/testing/PaintPrinters.h. |
| 49 void PrintTo(const PaintChunk&, std::ostream*); |
| 50 |
| 51 } // namespace blink |
| 52 |
| 53 #endif // PaintChunk_h |
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