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Side by Side Diff: third_party/WebKit/Source/platform/graphics/ImageOrientation.h

Issue 2398453002: Rewrap comments to 80 columns in Source/platform/graphics/. (Closed)
Patch Set: Review feedback Created 4 years, 2 months ago
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1 /* 1 /*
2 * Copyright (C) 2010 Google Inc. All rights reserved. 2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 * 3 *
4 * Redistribution and use in source and binary forms, with or without 4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions 5 * modification, are permitted provided that the following conditions
6 * are met: 6 * are met:
7 * 7 *
8 * 1. Redistributions of source code must retain the above copyright 8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer. 9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright 10 * 2. Redistributions in binary form must reproduce the above copyright
(...skipping 19 matching lines...) Expand all
30 #include "wtf/Allocator.h" 30 #include "wtf/Allocator.h"
31 31
32 namespace blink { 32 namespace blink {
33 33
34 class AffineTransform; 34 class AffineTransform;
35 class FloatSize; 35 class FloatSize;
36 36
37 // This enum intentionally matches the orientation values from the EXIF spec. 37 // This enum intentionally matches the orientation values from the EXIF spec.
38 // See JEITA CP-3451, page 18. http://www.exif.org/Exif2-2.PDF 38 // See JEITA CP-3451, page 18. http://www.exif.org/Exif2-2.PDF
39 enum ImageOrientationEnum { 39 enum ImageOrientationEnum {
40 // "TopLeft" means that the 0 row starts at the Top, the 0 column starts at th e Left. 40 // "TopLeft" means that the 0 row starts at the Top, the 0 column starts at
41 // the Left.
41 OriginTopLeft = 1, // default 42 OriginTopLeft = 1, // default
42 OriginTopRight = 2, // mirror along y-axis 43 OriginTopRight = 2, // mirror along y-axis
43 OriginBottomRight = 3, // 180 degree rotation 44 OriginBottomRight = 3, // 180 degree rotation
44 OriginBottomLeft = 4, // mirror along the x-axis 45 OriginBottomLeft = 4, // mirror along the x-axis
45 OriginLeftTop = 5, // mirror along x-axis + 270 degree CW rotation 46 OriginLeftTop = 5, // mirror along x-axis + 270 degree CW rotation
46 OriginRightTop = 6, // 90 degree CW rotation 47 OriginRightTop = 6, // 90 degree CW rotation
47 OriginRightBottom = 7, // mirror along x-axis + 90 degree CW rotation 48 OriginRightBottom = 7, // mirror along x-axis + 90 degree CW rotation
48 OriginLeftBottom = 8, // 270 degree CW rotation 49 OriginLeftBottom = 8, // 270 degree CW rotation
49 // All other values are "reserved" as of EXIF 2.2 50 // All other values are "reserved" as of EXIF 2.2
50 DefaultImageOrientation = OriginTopLeft, 51 DefaultImageOrientation = OriginTopLeft,
(...skipping 13 matching lines...) Expand all
64 : m_orientation(orientation) {} 65 : m_orientation(orientation) {}
65 66
66 bool usesWidthAsHeight() const { 67 bool usesWidthAsHeight() const {
67 // Values 5 through 8 all flip the width/height. 68 // Values 5 through 8 all flip the width/height.
68 return m_orientation >= OriginLeftTop; 69 return m_orientation >= OriginLeftTop;
69 } 70 }
70 71
71 // ImageOrientationEnum currently matches EXIF values, however code outside 72 // ImageOrientationEnum currently matches EXIF values, however code outside
72 // this function should never assume that. 73 // this function should never assume that.
73 static ImageOrientation fromEXIFValue(int exifValue) { 74 static ImageOrientation fromEXIFValue(int exifValue) {
74 // Values direct from images may be invalid, in which case we use the defaul t. 75 // Values direct from images may be invalid, in which case we use the
76 // default.
75 if (exifValue < OriginTopLeft || exifValue > OriginLeftBottom) 77 if (exifValue < OriginTopLeft || exifValue > OriginLeftBottom)
76 return DefaultImageOrientation; 78 return DefaultImageOrientation;
77 return static_cast<ImageOrientationEnum>(exifValue); 79 return static_cast<ImageOrientationEnum>(exifValue);
78 } 80 }
79 81
80 // This transform can be used for drawing an image according to the orientatio n. 82 // This transform can be used for drawing an image according to the
81 // It should be used in a right-handed coordinate system. 83 // orientation. It should be used in a right-handed coordinate system.
82 AffineTransform transformFromDefault(const FloatSize& drawnSize) const; 84 AffineTransform transformFromDefault(const FloatSize& drawnSize) const;
83 85
84 inline bool operator==(const ImageOrientation& other) const { 86 inline bool operator==(const ImageOrientation& other) const {
85 return other.m_orientation == m_orientation; 87 return other.m_orientation == m_orientation;
86 } 88 }
87 inline bool operator!=(const ImageOrientation& other) const { 89 inline bool operator!=(const ImageOrientation& other) const {
88 return !(*this == other); 90 return !(*this == other);
89 } 91 }
90 92
91 ImageOrientationEnum orientation() const { return m_orientation; } 93 ImageOrientationEnum orientation() const { return m_orientation; }
92 94
93 private: 95 private:
94 // FIXME: This only needs to be one byte. 96 // FIXME: This only needs to be one byte.
95 ImageOrientationEnum m_orientation; 97 ImageOrientationEnum m_orientation;
96 }; 98 };
97 99
98 } // namespace blink 100 } // namespace blink
99 101
100 #endif // ImageOrientation_h 102 #endif // ImageOrientation_h
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