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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "ui/gfx/skia_util.h" | 5 #include "ui/gfx/skia_util.h" |
| 6 | 6 |
| 7 #include <stddef.h> | 7 #include <stddef.h> |
| 8 #include <stdint.h> | 8 #include <stdint.h> |
| 9 | 9 |
| 10 #include "base/numerics/safe_conversions.h" | 10 #include "base/numerics/safe_conversions.h" |
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| 97 flattened->set(1, SkMScalarToScalar(transform.matrix().get(0, 1))); | 97 flattened->set(1, SkMScalarToScalar(transform.matrix().get(0, 1))); |
| 98 flattened->set(2, SkMScalarToScalar(transform.matrix().get(0, 3))); | 98 flattened->set(2, SkMScalarToScalar(transform.matrix().get(0, 3))); |
| 99 flattened->set(3, SkMScalarToScalar(transform.matrix().get(1, 0))); | 99 flattened->set(3, SkMScalarToScalar(transform.matrix().get(1, 0))); |
| 100 flattened->set(4, SkMScalarToScalar(transform.matrix().get(1, 1))); | 100 flattened->set(4, SkMScalarToScalar(transform.matrix().get(1, 1))); |
| 101 flattened->set(5, SkMScalarToScalar(transform.matrix().get(1, 3))); | 101 flattened->set(5, SkMScalarToScalar(transform.matrix().get(1, 3))); |
| 102 flattened->set(6, SkMScalarToScalar(transform.matrix().get(3, 0))); | 102 flattened->set(6, SkMScalarToScalar(transform.matrix().get(3, 0))); |
| 103 flattened->set(7, SkMScalarToScalar(transform.matrix().get(3, 1))); | 103 flattened->set(7, SkMScalarToScalar(transform.matrix().get(3, 1))); |
| 104 flattened->set(8, SkMScalarToScalar(transform.matrix().get(3, 3))); | 104 flattened->set(8, SkMScalarToScalar(transform.matrix().get(3, 3))); |
| 105 } | 105 } |
| 106 | 106 |
| 107 sk_sp<SkShader> CreateImageRepShader(const gfx::ImageSkiaRep& image_rep, | 107 sk_sp<cc::PaintShader> CreateImageRepShader(const gfx::ImageSkiaRep& image_rep, |
| 108 SkShader::TileMode tile_mode, | 108 cc::PaintShader::TileMode tile_mode, |
| 109 const SkMatrix& local_matrix) { | 109 const SkMatrix& local_matrix) { |
| 110 return CreateImageRepShaderForScale(image_rep, tile_mode, local_matrix, | 110 return cc::WrapSkShader(CreateImageRepShaderForScale( |
| 111 image_rep.scale()); | 111 image_rep, tile_mode, local_matrix, image_rep.scale())); |
| 112 } | 112 } |
| 113 | 113 |
| 114 sk_sp<SkShader> CreateImageRepShaderForScale( | 114 sk_sp<cc::PaintShader> CreateImageRepShaderForScale( |
| 115 const gfx::ImageSkiaRep& image_rep, | 115 const gfx::ImageSkiaRep& image_rep, |
| 116 SkShader::TileMode tile_mode, | 116 cc::PaintShader::TileMode tile_mode, |
| 117 const SkMatrix& local_matrix, | 117 const SkMatrix& local_matrix, |
| 118 SkScalar scale) { | 118 SkScalar scale) { |
| 119 // Unscale matrix by |scale| such that the bitmap is drawn at the | 119 // Unscale matrix by |scale| such that the bitmap is drawn at the |
| 120 // correct density. | 120 // correct density. |
| 121 // Convert skew and translation to pixel coordinates. | 121 // Convert skew and translation to pixel coordinates. |
| 122 // Thus, for |bitmap_scale| = 2: | 122 // Thus, for |bitmap_scale| = 2: |
| 123 // x scale = 2, x translation = 1 DIP, | 123 // x scale = 2, x translation = 1 DIP, |
| 124 // should be converted to | 124 // should be converted to |
| 125 // x scale = 1, x translation = 2 pixels. | 125 // x scale = 1, x translation = 2 pixels. |
| 126 SkMatrix shader_scale = local_matrix; | 126 SkMatrix shader_scale = local_matrix; |
| 127 shader_scale.preScale(scale, scale); | 127 shader_scale.preScale(scale, scale); |
| 128 shader_scale.setScaleX(local_matrix.getScaleX() / scale); | 128 shader_scale.setScaleX(local_matrix.getScaleX() / scale); |
| 129 shader_scale.setScaleY(local_matrix.getScaleY() / scale); | 129 shader_scale.setScaleY(local_matrix.getScaleY() / scale); |
| 130 | 130 |
| 131 return SkShader::MakeBitmapShader( | 131 return cc::WrapSkShader(cc::PaintShader::MakeBitmapShader( |
| 132 image_rep.sk_bitmap(), tile_mode, tile_mode, &shader_scale); | 132 image_rep.sk_bitmap(), tile_mode, tile_mode, &shader_scale)); |
| 133 } | 133 } |
| 134 | 134 |
| 135 sk_sp<SkShader> CreateGradientShader(int start_point, | 135 sk_sp<cc::PaintShader> CreateGradientShader(int start_point, |
| 136 int end_point, | 136 int end_point, |
| 137 SkColor start_color, | 137 SkColor start_color, |
| 138 SkColor end_color) { | 138 SkColor end_color) { |
| 139 SkColor grad_colors[2] = { start_color, end_color}; | 139 SkColor grad_colors[2] = { start_color, end_color}; |
| 140 SkPoint grad_points[2]; | 140 SkPoint grad_points[2]; |
| 141 grad_points[0].iset(0, start_point); | 141 grad_points[0].iset(0, start_point); |
| 142 grad_points[1].iset(0, end_point); | 142 grad_points[1].iset(0, end_point); |
| 143 | 143 |
| 144 return SkGradientShader::MakeLinear( | 144 return cc::WrapSkShader(SkGradientShader::MakeLinear( |
| 145 grad_points, grad_colors, NULL, 2, SkShader::kClamp_TileMode); | 145 grad_points, grad_colors, NULL, 2, cc::PaintShader::kClamp_TileMode)); |
| 146 } | 146 } |
| 147 | 147 |
| 148 // TODO(estade): remove. Only exists to support legacy CreateShadowDrawLooper. | 148 // TODO(estade): remove. Only exists to support legacy CreateShadowDrawLooper. |
| 149 static SkScalar DeprecatedRadiusToSigma(double radius) { | 149 static SkScalar DeprecatedRadiusToSigma(double radius) { |
| 150 // This captures historically what skia did under the hood. Now skia accepts | 150 // This captures historically what skia did under the hood. Now skia accepts |
| 151 // sigma, not radius, so we perform the conversion. | 151 // sigma, not radius, so we perform the conversion. |
| 152 return radius > 0 ? SkDoubleToScalar(0.57735f * radius + 0.5) : 0; | 152 return radius > 0 ? SkDoubleToScalar(0.57735f * radius + 0.5) : 0; |
| 153 } | 153 } |
| 154 | 154 |
| 155 // This is copied from | 155 // This is copied from |
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| 287 static const SkScalar kSkToHbRatio = SK_Scalar1 / kHbUnit1; | 287 static const SkScalar kSkToHbRatio = SK_Scalar1 / kHbUnit1; |
| 288 return kSkToHbRatio * value; | 288 return kSkToHbRatio * value; |
| 289 } | 289 } |
| 290 | 290 |
| 291 float HarfBuzzUnitsToFloat(int value) { | 291 float HarfBuzzUnitsToFloat(int value) { |
| 292 static const float kFloatToHbRatio = 1.0f / kHbUnit1; | 292 static const float kFloatToHbRatio = 1.0f / kHbUnit1; |
| 293 return kFloatToHbRatio * value; | 293 return kFloatToHbRatio * value; |
| 294 } | 294 } |
| 295 | 295 |
| 296 } // namespace gfx | 296 } // namespace gfx |
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