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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 #include "cc/playback/draw_image.h" | |
6 | |
7 namespace cc { | |
8 namespace { | |
9 | |
10 // Helper funciton to extract a scale from the matrix. Returns true on success | |
11 // and false on failure. | |
12 bool ExtractScale(const SkMatrix& matrix, SkSize* scale) { | |
13 *scale = SkSize::Make(matrix.getScaleX(), matrix.getScaleY()); | |
14 if (matrix.getType() & SkMatrix::kAffine_Mask) { | |
15 if (!matrix.decomposeScale(scale)) { | |
16 scale->set(1, 1); | |
17 return false; | |
18 } | |
19 } | |
20 return true; | |
21 } | |
22 | |
23 } // namespace | |
24 | |
25 DrawImage::DrawImage() | |
26 : image_(nullptr), | |
27 src_rect_(SkIRect::MakeXYWH(0, 0, 0, 0)), | |
28 filter_quality_(kNone_SkFilterQuality), | |
29 matrix_(SkMatrix::I()), | |
30 scale_(SkSize::Make(1.f, 1.f)), | |
31 matrix_is_decomposable_(true) {} | |
32 | |
33 DrawImage::DrawImage(sk_sp<const SkImage> image, | |
34 const SkIRect& src_rect, | |
35 SkFilterQuality filter_quality, | |
36 const SkMatrix& matrix) | |
37 : image_(std::move(image)), | |
38 src_rect_(src_rect), | |
39 filter_quality_(filter_quality), | |
40 matrix_(matrix) { | |
41 matrix_is_decomposable_ = ExtractScale(matrix_, &scale_); | |
42 } | |
43 | |
44 DrawImage::DrawImage(const DrawImage& other) = default; | |
45 | |
46 DrawImage::~DrawImage() = default; | |
47 | |
48 } // namespace cc | |
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