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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 #ifndef UI_GFX_IMAGE_SKIA_OPERATIONS_H_ | |
| 6 #define UI_GFX_IMAGE_SKIA_OPERATIONS_H_ | |
| 7 | |
| 8 #include "base/gtest_prod_util.h" | |
| 9 #include "skia/ext/image_operations.h" | |
| 10 #include "ui/gfx/color_utils.h" | |
| 11 #include "ui/gfx/gfx_export.h" | |
| 12 #include "ui/gfx/shadow_value.h" | |
| 13 #include "ui/gfx/skbitmap_operations.h" | |
| 14 | |
| 15 namespace gfx { | |
| 16 class ImageSkia; | |
| 17 class Rect; | |
| 18 class Size; | |
| 19 | |
| 20 class GFX_EXPORT ImageSkiaOperations { | |
| 21 public: | |
| 22 // Create an image that is a blend of two others. The alpha argument | |
| 23 // specifies the opacity of the second imag. The provided image must | |
| 24 // use the kARGB_8888_Config config and be of equal dimensions. | |
| 25 static ImageSkia CreateBlendedImage(const ImageSkia& first, | |
| 26 const ImageSkia& second, | |
| 27 double alpha); | |
| 28 | |
| 29 // Creates an image that is the original image with opacity set to |alpha|. | |
| 30 static ImageSkia CreateTransparentImage(const ImageSkia& image, double alpha); | |
| 31 | |
| 32 // Creates new image by painting first and second image respectively. | |
| 33 // The second image is centered in respect to the first image. | |
| 34 static ImageSkia CreateSuperimposedImage(const ImageSkia& first, | |
| 35 const ImageSkia& second); | |
| 36 | |
| 37 // Create an image that is the original image masked out by the mask defined | |
| 38 // in the alpha image. The images must use the kARGB_8888_Config config and | |
| 39 // be of equal dimensions. | |
| 40 static ImageSkia CreateMaskedImage(const ImageSkia& first, | |
| 41 const ImageSkia& alpha); | |
| 42 | |
| 43 // Create an image that is cropped from another image. This is special | |
| 44 // because it tiles the original image, so your coordinates can extend | |
| 45 // outside the bounds of the original image. | |
| 46 static ImageSkia CreateTiledImage(const ImageSkia& image, | |
| 47 int src_x, int src_y, | |
| 48 int dst_w, int dst_h); | |
| 49 | |
| 50 // Shift an image's HSL values. The shift values are in the range of 0-1, | |
| 51 // with the option to specify -1 for 'no change'. The shift values are | |
| 52 // defined as: | |
| 53 // hsl_shift[0] (hue): The absolute hue value for the image - 0 and 1 map | |
| 54 // to 0 and 360 on the hue color wheel (red). | |
| 55 // hsl_shift[1] (saturation): A saturation shift for the image, with the | |
| 56 // following key values: | |
| 57 // 0 = remove all color. | |
| 58 // 0.5 = leave unchanged. | |
| 59 // 1 = fully saturate the image. | |
| 60 // hsl_shift[2] (lightness): A lightness shift for the image, with the | |
| 61 // following key values: | |
| 62 // 0 = remove all lightness (make all pixels black). | |
| 63 // 0.5 = leave unchanged. | |
| 64 // 1 = full lightness (make all pixels white). | |
| 65 static ImageSkia CreateHSLShiftedImage(const gfx::ImageSkia& image, | |
| 66 const color_utils::HSL& hsl_shift); | |
| 67 | |
| 68 // Creates a button background image by compositing the color and image | |
| 69 // together, then applying the mask. This is a highly specialized composite | |
| 70 // operation that is the equivalent of drawing a background in |color|, | |
| 71 // tiling |image| over the top, and then masking the result out with |mask|. | |
| 72 // The images must use kARGB_8888_Config config. | |
| 73 static ImageSkia CreateButtonBackground(SkColor color, | |
| 74 const gfx::ImageSkia& image, | |
| 75 const gfx::ImageSkia& mask); | |
| 76 | |
| 77 // Returns an image which is a subset of |image| with bounds |subset_bounds|. | |
| 78 // The |image| cannot use kA1_Config config. | |
| 79 static ImageSkia ExtractSubset(const gfx::ImageSkia& image, | |
| 80 const gfx::Rect& subset_bounds); | |
| 81 | |
| 82 // Creates an image by resizing |source| to given |target_dip_size|. | |
| 83 static ImageSkia CreateResizedImage(const ImageSkia& source, | |
| 84 skia::ImageOperations::ResizeMethod methd, | |
| 85 const Size& target_dip_size); | |
| 86 | |
| 87 // Creates an image with drop shadow defined in |shadows| for |source|. | |
| 88 static ImageSkia CreateImageWithDropShadow(const ImageSkia& source, | |
| 89 const ShadowValues& shadows); | |
| 90 | |
| 91 // Creates an image which is a rotation of the |source|. |rotation| is the | |
| 92 // amount of clockwise rotation in degrees. | |
| 93 static ImageSkia CreateRotatedImage( | |
| 94 const ImageSkia& source, | |
| 95 SkBitmapOperations::RotationAmount rotation); | |
| 96 | |
| 97 private: | |
| 98 ImageSkiaOperations(); // Class for scoping only. | |
| 99 }; | |
| 100 | |
| 101 } // namespace gfx | |
| 102 | |
| 103 #endif // UI_GFX_IMAGE_IMAGE_SKIA_OPERATIONS_H_ | |
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Issue 854713003:
More old files deletion. (Closed)
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