| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef UI_GFX_SKIA_UTIL_H_ |
| #define UI_GFX_SKIA_UTIL_H_ |
| |
| #include <string> |
| #include <vector> |
| |
| #include "skia/ext/refptr.h" |
| #include "third_party/skia/include/core/SkColor.h" |
| #include "third_party/skia/include/core/SkRect.h" |
| #include "third_party/skia/include/core/SkShader.h" |
| #include "ui/gfx/gfx_export.h" |
| |
| class SkBitmap; |
| class SkDrawLooper; |
| |
| namespace gfx { |
| |
| class ImageSkiaRep; |
| class Rect; |
| class RectF; |
| class ShadowValue; |
| class Transform; |
| |
| // Convert between Skia and gfx rect types. |
| GFX_EXPORT SkRect RectToSkRect(const Rect& rect); |
| GFX_EXPORT SkIRect RectToSkIRect(const Rect& rect); |
| GFX_EXPORT Rect SkIRectToRect(const SkIRect& rect); |
| GFX_EXPORT SkRect RectFToSkRect(const RectF& rect); |
| GFX_EXPORT RectF SkRectToRectF(const SkRect& rect); |
| |
| GFX_EXPORT void TransformToFlattenedSkMatrix(const gfx::Transform& transform, |
| SkMatrix* flattened); |
| |
| // Creates a bitmap shader for the image rep with the image rep's scale factor. |
| // Sets the created shader's local matrix such that it displays the image rep at |
| // the correct scale factor. |
| // The shader's local matrix should not be changed after the shader is created. |
| // TODO(pkotwicz): Allow shader's local matrix to be changed after the shader |
| // is created. |
| // |
| GFX_EXPORT skia::RefPtr<SkShader> CreateImageRepShader( |
| const gfx::ImageSkiaRep& image_rep, |
| SkShader::TileMode tile_mode, |
| const SkMatrix& local_matrix); |
| |
| // Creates a vertical gradient shader. The caller owns the shader. |
| // Example usage to avoid leaks: |
| GFX_EXPORT skia::RefPtr<SkShader> CreateGradientShader(int start_point, |
| int end_point, |
| SkColor start_color, |
| SkColor end_color); |
| |
| // Creates a draw looper to generate |shadows|. The caller owns the draw looper. |
| // NULL is returned if |shadows| is empty since no draw looper is needed in |
| // this case. |
| GFX_EXPORT skia::RefPtr<SkDrawLooper> CreateShadowDrawLooper( |
| const std::vector<ShadowValue>& shadows); |
| |
| // Returns true if the two bitmaps contain the same pixels. |
| GFX_EXPORT bool BitmapsAreEqual(const SkBitmap& bitmap1, |
| const SkBitmap& bitmap2); |
| |
| // Converts Skia ARGB format pixels in |skia| to RGBA. |
| GFX_EXPORT void ConvertSkiaToRGBA(const unsigned char* skia, |
| int pixel_width, |
| unsigned char* rgba); |
| |
| } // namespace gfx |
| |
| #endif // UI_GFX_SKIA_UTIL_H_ |