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| 1 /* | 1 /* |
| 2 * Copyright 2006 The Android Open Source Project | 2 * Copyright 2006 The Android Open Source Project |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 6 */ | 6 */ |
| 7 | 7 |
| 8 #ifndef SkGradientShader_DEFINED | 8 #ifndef SkGradientShader_DEFINED |
| 9 #define SkGradientShader_DEFINED | 9 #define SkGradientShader_DEFINED |
| 10 | 10 |
| (...skipping 62 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 73 const SkColor colors[], const SkScalar pos[],
int count, | 73 const SkColor colors[], const SkScalar pos[],
int count, |
| 74 SkShader::TileMode mode, | 74 SkShader::TileMode mode, |
| 75 uint32_t flags, const SkMatrix* localMatrix); | 75 uint32_t flags, const SkMatrix* localMatrix); |
| 76 | 76 |
| 77 static SkShader* CreateRadial(const SkPoint& center, SkScalar radius, | 77 static SkShader* CreateRadial(const SkPoint& center, SkScalar radius, |
| 78 const SkColor colors[], const SkScalar pos[],
int count, | 78 const SkColor colors[], const SkScalar pos[],
int count, |
| 79 SkShader::TileMode mode) { | 79 SkShader::TileMode mode) { |
| 80 return CreateRadial(center, radius, colors, pos, count, mode, 0, NULL); | 80 return CreateRadial(center, radius, colors, pos, count, mode, 0, NULL); |
| 81 } | 81 } |
| 82 | 82 |
| 83 /** Returns a shader that generates a radial gradient given the start positi
on, start radius, end position and end radius. | |
| 84 <p /> | |
| 85 CreateTwoPointRadial returns a shader with a reference count of 1. | |
| 86 The caller should decrement the shader's reference count when done with
the shader. | |
| 87 It is an error for colorCount to be < 2, for startRadius or endRadius to
be < 0, or for | |
| 88 startRadius to be equal to endRadius. | |
| 89 @param start The center of the start circle for this gradient | |
| 90 @param startRadius Must be positive. The radius of the start circle f
or this gradient. | |
| 91 @param end The center of the end circle for this gradient | |
| 92 @param endRadius Must be positive. The radius of the end circle for th
is gradient. | |
| 93 @param colors The array[count] of colors, to be distributed between th
e center and edge of the circle | |
| 94 @param pos May be NULL. The array[count] of SkScalars, or NULL, of
the relative position of | |
| 95 each corresponding color in the colors array. If this is
NULL, | |
| 96 the the colors are distributed evenly between the center
and edge of the circle. | |
| 97 If this is not null, the values must begin with 0, end w
ith 1.0, and | |
| 98 intermediate values must be strictly increasing. | |
| 99 @param count Must be >= 2. The number of colors (and pos if not NULL)
entries | |
| 100 @param mode The tiling mode | |
| 101 */ | |
| 102 static SkShader* CreateTwoPointRadial(const SkPoint& start, SkScalar startRa
dius, | |
| 103 const SkPoint& end, SkScalar endRadius
, | |
| 104 const SkColor colors[], const SkScalar
pos[], int count, | |
| 105 SkShader::TileMode mode, | |
| 106 uint32_t flags, const SkMatrix* localM
atrix); | |
| 107 | |
| 108 static SkShader* CreateTwoPointRadial(const SkPoint& start, SkScalar startRa
dius, | |
| 109 const SkPoint& end, SkScalar endRadius
, | |
| 110 const SkColor colors[], const SkScalar
pos[], int count, | |
| 111 SkShader::TileMode mode) { | |
| 112 return CreateTwoPointRadial(start, startRadius, end, endRadius, colors,
pos, count, mode, | |
| 113 0, NULL); | |
| 114 } | |
| 115 | |
| 116 /** | 83 /** |
| 117 * Returns a shader that generates a conical gradient given two circles, or | 84 * Returns a shader that generates a conical gradient given two circles, or |
| 118 * returns NULL if the inputs are invalid. The gradient interprets the | 85 * returns NULL if the inputs are invalid. The gradient interprets the |
| 119 * two circles according to the following HTML spec. | 86 * two circles according to the following HTML spec. |
| 120 * http://dev.w3.org/html5/2dcontext/#dom-context-2d-createradialgradient | 87 * http://dev.w3.org/html5/2dcontext/#dom-context-2d-createradialgradient |
| 121 */ | 88 */ |
| 122 static SkShader* CreateTwoPointConical(const SkPoint& start, SkScalar startR
adius, | 89 static SkShader* CreateTwoPointConical(const SkPoint& start, SkScalar startR
adius, |
| 123 const SkPoint& end, SkScalar endRadiu
s, | 90 const SkPoint& end, SkScalar endRadiu
s, |
| 124 const SkColor colors[], const SkScala
r pos[], int count, | 91 const SkColor colors[], const SkScala
r pos[], int count, |
| 125 SkShader::TileMode mode, | 92 SkShader::TileMode mode, |
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| 154 | 121 |
| 155 static SkShader* CreateSweep(SkScalar cx, SkScalar cy, | 122 static SkShader* CreateSweep(SkScalar cx, SkScalar cy, |
| 156 const SkColor colors[], const SkScalar pos[], i
nt count) { | 123 const SkColor colors[], const SkScalar pos[], i
nt count) { |
| 157 return CreateSweep(cx, cy, colors, pos, count, 0, NULL); | 124 return CreateSweep(cx, cy, colors, pos, count, 0, NULL); |
| 158 } | 125 } |
| 159 | 126 |
| 160 SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP() | 127 SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP() |
| 161 }; | 128 }; |
| 162 | 129 |
| 163 #endif | 130 #endif |
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