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| 1 // Copyright (c) 2012 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 "ui/gfx/image/image_util.h" | |
| 6 | |
| 7 #include "base/memory/scoped_ptr.h" | |
| 8 #include "third_party/skia/include/core/SkBitmap.h" | |
| 9 #include "ui/gfx/codec/jpeg_codec.h" | |
| 10 #include "ui/gfx/image/image.h" | |
| 11 #include "ui/gfx/image/image_skia.h" | |
| 12 | |
| 13 namespace gfx { | |
| 14 | |
| 15 const uint32_t kMinimumVisibleOpacity = 12; | |
| 16 | |
| 17 // The iOS implementations of the JPEG functions are in image_util_ios.mm. | |
| 18 #if !defined(OS_IOS) | |
| 19 Image ImageFrom1xJPEGEncodedData(const unsigned char* input, | |
| 20 size_t input_size) { | |
| 21 scoped_ptr<SkBitmap> bitmap(gfx::JPEGCodec::Decode(input, input_size)); | |
| 22 if (bitmap.get()) | |
| 23 return Image::CreateFrom1xBitmap(*bitmap); | |
| 24 | |
| 25 return Image(); | |
| 26 } | |
| 27 | |
| 28 bool JPEG1xEncodedDataFromImage(const Image& image, int quality, | |
| 29 std::vector<unsigned char>* dst) { | |
| 30 const gfx::ImageSkiaRep& image_skia_rep = | |
| 31 image.AsImageSkia().GetRepresentation(1.0f); | |
| 32 if (image_skia_rep.scale() != 1.0f) | |
| 33 return false; | |
| 34 | |
| 35 const SkBitmap& bitmap = image_skia_rep.sk_bitmap(); | |
| 36 SkAutoLockPixels bitmap_lock(bitmap); | |
| 37 | |
| 38 if (!bitmap.readyToDraw()) | |
| 39 return false; | |
| 40 | |
| 41 return gfx::JPEGCodec::Encode( | |
| 42 reinterpret_cast<unsigned char*>(bitmap.getAddr32(0, 0)), | |
| 43 gfx::JPEGCodec::FORMAT_SkBitmap, bitmap.width(), | |
| 44 bitmap.height(), | |
| 45 static_cast<int>(bitmap.rowBytes()), quality, | |
| 46 dst); | |
| 47 } | |
| 48 #endif // !defined(OS_IOS) | |
| 49 | |
| 50 bool VisibleMargins(const ImageSkia& image, int* leading, int* trailing) { | |
| 51 *leading = 0; | |
| 52 *trailing = std::max(1, image.width()) - 1; | |
| 53 if (!image.HasRepresentation(1.0)) | |
| 54 return false; | |
| 55 | |
| 56 const ImageSkiaRep& rep = image.GetRepresentation(1.0); | |
| 57 if (rep.is_null()) | |
| 58 return false; | |
| 59 | |
| 60 const SkBitmap& bitmap = rep.sk_bitmap(); | |
| 61 if (bitmap.isNull() || bitmap.width() == 0) | |
| 62 return false; | |
| 63 | |
| 64 if (bitmap.isOpaque()) | |
| 65 return true; | |
| 66 | |
| 67 SkAutoLockPixels l(bitmap); | |
| 68 int inner_min = bitmap.width(); | |
| 69 for (int x = 0; x < bitmap.width(); ++x) { | |
| 70 for (int y = 0; y < bitmap.height(); ++y) { | |
| 71 if (SkColorGetA(bitmap.getColor(x, y)) > kMinimumVisibleOpacity) { | |
| 72 inner_min = x; | |
| 73 break; | |
| 74 } | |
| 75 } | |
| 76 if (inner_min < bitmap.width()) | |
| 77 break; | |
| 78 } | |
| 79 | |
| 80 int inner_max = -1; | |
| 81 for (int x = bitmap.width() - 1; x > inner_min; --x) { | |
| 82 for (int y = 0; y < bitmap.height(); ++y) { | |
| 83 if (SkColorGetA(bitmap.getColor(x, y)) > kMinimumVisibleOpacity) { | |
| 84 inner_max = x; | |
| 85 break; | |
| 86 } | |
| 87 } | |
| 88 if (inner_max > -1) | |
| 89 break; | |
| 90 } | |
| 91 | |
| 92 if (inner_min == bitmap.width()) { | |
| 93 *leading = bitmap.width()/2; | |
| 94 *trailing = bitmap.width()/2 + 1; | |
| 95 return true; | |
| 96 } | |
| 97 | |
| 98 *leading = inner_min; | |
| 99 *trailing = inner_max; | |
| 100 return true; | |
| 101 } | |
| 102 | |
| 103 } // namespace gfx | |
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Chromium Code Reviews
Issue 854713003:
More old files deletion. (Closed)
Base URL: https://github.com/domokit/mojo.git@master