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| 1 /* | 1 /* |
| 2 * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved. | 2 * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved. |
| 3 * Copyright (C) 2007 Alp Toker <alp@atoker.com> | 3 * Copyright (C) 2007 Alp Toker <alp@atoker.com> |
| 4 * Copyright (C) 2013 Google Inc. All rights reserved. | 4 * Copyright (C) 2013 Google Inc. All rights reserved. |
| 5 * | 5 * |
| 6 * Redistribution and use in source and binary forms, with or without | 6 * Redistribution and use in source and binary forms, with or without |
| 7 * modification, are permitted provided that the following conditions | 7 * modification, are permitted provided that the following conditions |
| 8 * are met: | 8 * are met: |
| 9 * 1. Redistributions of source code must retain the above copyright | 9 * 1. Redistributions of source code must retain the above copyright |
| 10 * notice, this list of conditions and the following disclaimer. | 10 * notice, this list of conditions and the following disclaimer. |
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| 22 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | 22 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| 23 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 23 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 */ | 26 */ |
| 27 | 27 |
| 28 #include "platform/graphics/Gradient.h" | 28 #include "platform/graphics/Gradient.h" |
| 29 | 29 |
| 30 #include "platform/geometry/FloatRect.h" | 30 #include "platform/geometry/FloatRect.h" |
| 31 #include "platform/graphics/GraphicsContext.h" | 31 #include "platform/graphics/GraphicsContext.h" |
| 32 #include "platform/graphics/paint/PaintShader.h" |
| 32 #include "platform/graphics/skia/SkiaUtils.h" | 33 #include "platform/graphics/skia/SkiaUtils.h" |
| 33 #include "third_party/skia/include/core/SkColor.h" | 34 #include "third_party/skia/include/core/SkColor.h" |
| 34 #include "third_party/skia/include/core/SkMatrix.h" | 35 #include "third_party/skia/include/core/SkMatrix.h" |
| 35 #include "third_party/skia/include/core/SkShader.h" | 36 #include "third_party/skia/include/core/SkShader.h" |
| 36 #include "third_party/skia/include/effects/SkGradientShader.h" | 37 #include "third_party/skia/include/effects/SkGradientShader.h" |
| 37 #include <algorithm> | 38 #include <algorithm> |
| 38 | 39 |
| 39 typedef Vector<SkScalar, 8> ColorStopOffsetVector; | 40 typedef Vector<SkScalar, 8> ColorStopOffsetVector; |
| 40 typedef Vector<SkColor, 8> ColorStopColorVector; | 41 typedef Vector<SkColor, 8> ColorStopColorVector; |
| 41 | 42 |
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| 169 } | 170 } |
| 170 | 171 |
| 171 // Copy the last stop to 1.0 if needed. See comment above about this float | 172 // Copy the last stop to 1.0 if needed. See comment above about this float |
| 172 // comparison. | 173 // comparison. |
| 173 if (count < 1 || (--stop)->stop < 1.0) { | 174 if (count < 1 || (--stop)->stop < 1.0) { |
| 174 pos[start + count] = WebCoreFloatToSkScalar(1.0); | 175 pos[start + count] = WebCoreFloatToSkScalar(1.0); |
| 175 colors[start + count] = colors[start + count - 1]; | 176 colors[start + count] = colors[start + count - 1]; |
| 176 } | 177 } |
| 177 } | 178 } |
| 178 | 179 |
| 179 sk_sp<SkShader> Gradient::createShader(const SkMatrix& localMatrix) { | 180 sk_sp<PaintShader> Gradient::createShader(const SkMatrix& localMatrix) { |
| 180 sortStopsIfNecessary(); | 181 sortStopsIfNecessary(); |
| 181 ASSERT(m_stopsSorted); | 182 ASSERT(m_stopsSorted); |
| 182 | 183 |
| 183 size_t countUsed = totalStopsNeeded(m_stops.data(), m_stops.size()); | 184 size_t countUsed = totalStopsNeeded(m_stops.data(), m_stops.size()); |
| 184 ASSERT(countUsed >= 2); | 185 ASSERT(countUsed >= 2); |
| 185 ASSERT(countUsed >= m_stops.size()); | 186 ASSERT(countUsed >= m_stops.size()); |
| 186 | 187 |
| 187 ColorStopOffsetVector pos(countUsed); | 188 ColorStopOffsetVector pos(countUsed); |
| 188 ColorStopColorVector colors(countUsed); | 189 ColorStopColorVector colors(countUsed); |
| 189 fillStops(m_stops.data(), m_stops.size(), pos, colors); | 190 fillStops(m_stops.data(), m_stops.size(), pos, colors); |
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| 239 shader = SkGradientShader::MakeLinear( | 240 shader = SkGradientShader::MakeLinear( |
| 240 pts, colors.data(), pos.data(), static_cast<int>(countUsed), tile, | 241 pts, colors.data(), pos.data(), static_cast<int>(countUsed), tile, |
| 241 shouldDrawInPMColorSpace, &localMatrix); | 242 shouldDrawInPMColorSpace, &localMatrix); |
| 242 } | 243 } |
| 243 | 244 |
| 244 if (!shader) { | 245 if (!shader) { |
| 245 // use last color, since our "geometry" was degenerate (e.g. radius==0) | 246 // use last color, since our "geometry" was degenerate (e.g. radius==0) |
| 246 shader = SkShader::MakeColorShader(colors[countUsed - 1]); | 247 shader = SkShader::MakeColorShader(colors[countUsed - 1]); |
| 247 } | 248 } |
| 248 | 249 |
| 249 return shader; | 250 return WrapSkShader(shader); |
| 250 } | 251 } |
| 251 | 252 |
| 252 void Gradient::applyToPaint(SkPaint& paint, const SkMatrix& localMatrix) { | 253 void Gradient::applyToPaint(PaintFlags& paint, const SkMatrix& localMatrix) { |
| 253 if (!m_cachedShader || localMatrix != m_cachedShader->getLocalMatrix()) | 254 if (!m_cachedShader || localMatrix != m_cachedShader->getLocalMatrix()) |
| 254 m_cachedShader = createShader(localMatrix); | 255 m_cachedShader = createShader(localMatrix); |
| 255 | 256 |
| 256 paint.setShader(m_cachedShader); | 257 paint.setShader(m_cachedShader); |
| 257 | 258 |
| 258 // Legacy behavior: gradients are always dithered. | 259 // Legacy behavior: gradients are always dithered. |
| 259 paint.setDither(true); | 260 paint.setDither(true); |
| 260 } | 261 } |
| 261 | 262 |
| 262 } // namespace blink | 263 } // namespace blink |
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