ui/gfx: split out code that depends on paint

ui/gfx/skia_util.h

 // 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 "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/geometry/quad_f.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/gfx_export.h"
 
 class SkBitmap;
-class SkDrawLooper;
+class SkMatrix;
 
 namespace gfx {
 
-class ImageSkiaRep;
 class Point;
 class PointF;
 class Rect;
 class RectF;
-class ShadowValue;
 class Transform;
 
 // Convert between Skia and gfx types.
 GFX_EXPORT SkPoint PointToSkPoint(const Point& point);
 GFX_EXPORT SkIPoint PointToSkIPoint(const Point& point);
 GFX_EXPORT SkPoint PointFToSkPoint(const PointF& point);
 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 SkSize SizeFToSkSize(const SizeF& size);
 GFX_EXPORT SizeF SkSizeToSizeF(const SkSize& size);
 GFX_EXPORT Size SkISizeToSize(const SkISize& size);
 
 GFX_EXPORT void QuadFToSkPoints(const gfx::QuadF& quad, SkPoint points[4]);
 
 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 sk_sp<SkShader> CreateImageRepShader(
-    const gfx::ImageSkiaRep& image_rep,
-    SkShader::TileMode tile_mode,
-    const SkMatrix& local_matrix);
-
-// Creates a bitmap shader for the image rep with the passed in scale factor.
-GFX_EXPORT sk_sp<SkShader> CreateImageRepShaderForScale(
-    const gfx::ImageSkiaRep& image_rep,
-    SkShader::TileMode tile_mode,
-    const SkMatrix& local_matrix,
-    SkScalar scale);
-
-// Creates a vertical gradient shader. The caller owns the shader.
-// Example usage to avoid leaks:
-GFX_EXPORT sk_sp<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.
-// DEPRECATED: See below. TODO(estade): remove this: crbug.com/624175
-GFX_EXPORT sk_sp<SkDrawLooper> CreateShadowDrawLooper(
-    const std::vector<ShadowValue>& shadows);
-
-// Creates a draw looper to generate |shadows|. This creates a looper with the
-// correct amount of blur. Callers of the existing CreateShadowDrawLooper may
-// rely on the wrong amount of blur being applied but new code should use this
-// function.
-GFX_EXPORT sk_sp<SkDrawLooper> CreateShadowDrawLooperCorrectBlur(
-    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);
 
 // Converts a Skia floating-point value to an int appropriate for hb_position_t.
 GFX_EXPORT int SkiaScalarToHarfBuzzUnits(SkScalar value);
 
 // Converts an hb_position_t to a Skia floating-point value.
 GFX_EXPORT SkScalar HarfBuzzUnitsToSkiaScalar(int value);
 
 // Converts an hb_position_t to a float.
 GFX_EXPORT float HarfBuzzUnitsToFloat(int value);
 
 }  // namespace gfx
 
 #endif  // UI_GFX_SKIA_UTIL_H_