ec3ed6a5eb
I have manually examined all of these diffs and restored a few files that seem to require manual adjustment. The following files still need to be modified manually, in a separate CL: android_sample/SampleApp/AndroidManifest.xml android_sample/SampleApp/res/layout/layout.xml android_sample/SampleApp/res/menu/sample.xml android_sample/SampleApp/res/values/strings.xml android_sample/SampleApp/src/com/skia/sampleapp/SampleApp.java android_sample/SampleApp/src/com/skia/sampleapp/SampleView.java experimental/CiCarbonSampleMain.c experimental/CocoaDebugger/main.m experimental/FileReaderApp/main.m experimental/SimpleCocoaApp/main.m experimental/iOSSampleApp/Shared/SkAlertPrompt.h experimental/iOSSampleApp/Shared/SkAlertPrompt.m experimental/iOSSampleApp/SkiOSSampleApp-Base.xcconfig experimental/iOSSampleApp/SkiOSSampleApp-Debug.xcconfig experimental/iOSSampleApp/SkiOSSampleApp-Release.xcconfig gpu/src/android/GrGLDefaultInterface_android.cpp gyp/common.gypi gyp_skia include/ports/SkHarfBuzzFont.h include/views/SkOSWindow_wxwidgets.h make.bat make.py src/opts/memset.arm.S src/opts/memset16_neon.S src/opts/memset32_neon.S src/opts/opts_check_arm.cpp src/ports/SkDebug_brew.cpp src/ports/SkMemory_brew.cpp src/ports/SkOSFile_brew.cpp src/ports/SkXMLParser_empty.cpp src/utils/ios/SkImageDecoder_iOS.mm src/utils/ios/SkOSFile_iOS.mm src/utils/ios/SkStream_NSData.mm tests/FillPathTest.cpp Review URL: http://codereview.appspot.com/4816058 git-svn-id: http://skia.googlecode.com/svn/trunk@1982 2bbb7eff-a529-9590-31e7-b0007b416f81
119 lines
6.8 KiB
C++
119 lines
6.8 KiB
C++
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/*
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* Copyright 2006 The Android Open Source Project
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkGradientShader_DEFINED
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#define SkGradientShader_DEFINED
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#include "SkShader.h"
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class SkUnitMapper;
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/** \class SkGradientShader
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SkGradientShader hosts factories for creating subclasses of SkShader that
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render linear and radial gradients.
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*/
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class SK_API SkGradientShader {
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public:
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/** Returns a shader that generates a linear gradient between the two
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specified points.
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<p />
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CreateLinear returns a shader with a reference count of 1.
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The caller should decrement the shader's reference count when done with the shader.
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It is an error for count to be < 2.
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@param pts The start and end points for the gradient.
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@param colors The array[count] of colors, to be distributed between the two points
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@param pos May be NULL. array[count] of SkScalars, or NULL, of the relative position of
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each corresponding color in the colors array. If this is NULL,
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the the colors are distributed evenly between the start and end point.
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If this is not null, the values must begin with 0, end with 1.0, and
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intermediate values must be strictly increasing.
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@param count Must be >=2. The number of colors (and pos if not NULL) entries.
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@param mode The tiling mode
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@param mapper May be NULL. Callback to modify the spread of the colors.
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*/
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static SkShader* CreateLinear( const SkPoint pts[2],
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const SkColor colors[], const SkScalar pos[], int count,
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SkShader::TileMode mode,
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SkUnitMapper* mapper = NULL);
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/** Returns a shader that generates a radial gradient given the center and radius.
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<p />
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CreateRadial returns a shader with a reference count of 1.
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The caller should decrement the shader's reference count when done with the shader.
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It is an error for colorCount to be < 2, or for radius to be <= 0.
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@param center The center of the circle for this gradient
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@param radius Must be positive. The radius of the circle for this gradient
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@param colors The array[count] of colors, to be distributed between the center and edge of the circle
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@param pos May be NULL. The array[count] of SkScalars, or NULL, of the relative position of
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each corresponding color in the colors array. If this is NULL,
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the the colors are distributed evenly between the center and edge of the circle.
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If this is not null, the values must begin with 0, end with 1.0, and
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intermediate values must be strictly increasing.
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@param count Must be >= 2. The number of colors (and pos if not NULL) entries
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@param mode The tiling mode
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@param mapper May be NULL. Callback to modify the spread of the colors.
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*/
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static SkShader* CreateRadial( const SkPoint& center, SkScalar radius,
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const SkColor colors[], const SkScalar pos[], int count,
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SkShader::TileMode mode,
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SkUnitMapper* mapper = NULL);
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/** Returns a shader that generates a radial gradient given the start position, start radius, end position and end radius.
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<p />
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CreateTwoPointRadial returns a shader with a reference count of 1.
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The caller should decrement the shader's reference count when done with the shader.
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It is an error for colorCount to be < 2, for startRadius or endRadius to be < 0, or for
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startRadius to be equal to endRadius.
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@param start The center of the start circle for this gradient
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@param startRadius Must be positive. The radius of the start circle for this gradient.
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@param end The center of the end circle for this gradient
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@param endRadius Must be positive. The radius of the end circle for this gradient.
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@param colors The array[count] of colors, to be distributed between the center and edge of the circle
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@param pos May be NULL. The array[count] of SkScalars, or NULL, of the relative position of
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each corresponding color in the colors array. If this is NULL,
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the the colors are distributed evenly between the center and edge of the circle.
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If this is not null, the values must begin with 0, end with 1.0, and
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intermediate values must be strictly increasing.
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@param count Must be >= 2. The number of colors (and pos if not NULL) entries
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@param mode The tiling mode
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@param mapper May be NULL. Callback to modify the spread of the colors.
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*/
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static SkShader* CreateTwoPointRadial(const SkPoint& start,
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SkScalar startRadius,
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const SkPoint& end,
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SkScalar endRadius,
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const SkColor colors[],
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const SkScalar pos[], int count,
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SkShader::TileMode mode,
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SkUnitMapper* mapper = NULL);
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/** Returns a shader that generates a sweep gradient given a center.
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<p />
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CreateSweep returns a shader with a reference count of 1.
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The caller should decrement the shader's reference count when done with the shader.
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It is an error for colorCount to be < 2.
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@param cx The X coordinate of the center of the sweep
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@param cx The Y coordinate of the center of the sweep
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@param colors The array[count] of colors, to be distributed around the center.
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@param pos May be NULL. The array[count] of SkScalars, or NULL, of the relative position of
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each corresponding color in the colors array. If this is NULL,
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the the colors are distributed evenly between the center and edge of the circle.
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If this is not null, the values must begin with 0, end with 1.0, and
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intermediate values must be strictly increasing.
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@param count Must be >= 2. The number of colors (and pos if not NULL) entries
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@param mapper May be NULL. Callback to modify the spread of the colors.
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*/
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static SkShader* CreateSweep(SkScalar cx, SkScalar cy,
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const SkColor colors[], const SkScalar pos[],
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int count, SkUnitMapper* mapper = NULL);
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};
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#endif
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