1
2 /*
3 * Copyright (C) 2010 Google Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
22 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include "third_party/blink/renderer/platform/graphics/image_orientation.h"
28
29 #include "third_party/blink/renderer/platform/transforms/affine_transform.h"
30
31 namespace blink {
32
TransformFromDefault(const FloatSize & drawn_size) const33 AffineTransform ImageOrientation::TransformFromDefault(
34 const FloatSize& drawn_size) const {
35 float w = drawn_size.Width();
36 float h = drawn_size.Height();
37
38 switch (orientation_) {
39 case kOriginTopLeft:
40 return AffineTransform();
41 case kOriginTopRight:
42 return AffineTransform(-1, 0, 0, 1, w, 0);
43 case kOriginBottomRight:
44 return AffineTransform(-1, 0, 0, -1, w, h);
45 case kOriginBottomLeft:
46 return AffineTransform(1, 0, 0, -1, 0, h);
47 case kOriginLeftTop:
48 return AffineTransform(0, 1, 1, 0, 0, 0);
49 case kOriginRightTop:
50 return AffineTransform(0, 1, -1, 0, w, 0);
51 case kOriginRightBottom:
52 return AffineTransform(0, -1, -1, 0, w, h);
53 case kOriginLeftBottom:
54 return AffineTransform(0, -1, 1, 0, 0, h);
55 default:
56 NOTREACHED();
57 }
58
59 NOTREACHED();
60 return AffineTransform();
61 }
62
63 } // namespace blink
64