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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2016 Google Inc. | 3 * Copyright 2016 Google Inc. |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 #include "SampleCode.h" | 8 #include "SampleCode.h" |
9 #include "SkBlurMask.h" | 9 #include "SkBlurMask.h" |
10 #include "SkBlurMaskFilter.h" | 10 #include "SkBlurMaskFilter.h" |
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192 pad *= scaleFactors[0]; | 192 pad *= scaleFactors[0]; |
193 SkASSERT(radius < 16384); | 193 SkASSERT(radius < 16384); |
194 SkASSERT(pad < 64); | 194 SkASSERT(pad < 64); |
195 // Convert radius to 14.2 fixed point and place in the R & G components. | 195 // Convert radius to 14.2 fixed point and place in the R & G components. |
196 // Convert pad to 6.2 fixed point and place in the B component. | 196 // Convert pad to 6.2 fixed point and place in the B component. |
197 uint16_t iRadius = (uint16_t)(radius*4.0f); | 197 uint16_t iRadius = (uint16_t)(radius*4.0f); |
198 unsigned char alpha = (unsigned char)(ambientAlpha*255.999f); | 198 unsigned char alpha = (unsigned char)(ambientAlpha*255.999f); |
199 paint.setColor(SkColorSetARGB(alpha, iRadius >> 8, iRadius & 0xff, | 199 paint.setColor(SkColorSetARGB(alpha, iRadius >> 8, iRadius & 0xff, |
200 (unsigned char)(4.0f*pad))); | 200 (unsigned char)(4.0f*pad))); |
201 | 201 |
202 paint.setShader(SkGaussianEdgeShader::Make(true)); | 202 paint.setShader(SkGaussianEdgeShader::Make()); |
203 canvas->drawRRect(pathRRect, paint); | 203 canvas->drawRRect(pathRRect, paint); |
204 } | 204 } |
205 | 205 |
206 void drawSpotShadow(SkCanvas* canvas, const SkPath& path, SkScalar zValue, | 206 void drawSpotShadow(SkCanvas* canvas, const SkPath& path, SkScalar zValue, |
207 SkPoint3 lightPos, SkScalar lightWidth, SkScalar spotAlp
ha) { | 207 SkPoint3 lightPos, SkScalar lightWidth, SkScalar spotAlp
ha) { |
208 if (spotAlpha <= 0) { | 208 if (spotAlpha <= 0) { |
209 return; | 209 return; |
210 } | 210 } |
211 | 211 |
212 SkScalar zRatio = zValue / (lightPos.fZ - zValue); | 212 SkScalar zRatio = zValue / (lightPos.fZ - zValue); |
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313 // If the area of the stroked geometry is larger than the fill geometry,
or | 313 // If the area of the stroked geometry is larger than the fill geometry,
or |
314 // if our pad is too big to convert to 6.2 fixed point, just fill it. | 314 // if our pad is too big to convert to 6.2 fixed point, just fill it. |
315 if (strokedArea > filledArea || pad >= 64) { | 315 if (strokedArea > filledArea || pad >= 64) { |
316 pad = 0; | 316 pad = 0; |
317 paint.setStyle(SkPaint::kStrokeAndFill_Style); | 317 paint.setStyle(SkPaint::kStrokeAndFill_Style); |
318 paint.setStrokeWidth(radius); | 318 paint.setStrokeWidth(radius); |
319 } else { | 319 } else { |
320 paint.setStyle(SkPaint::kStroke_Style); | 320 paint.setStyle(SkPaint::kStroke_Style); |
321 paint.setStrokeWidth(strokeWidth); | 321 paint.setStrokeWidth(strokeWidth); |
322 } | 322 } |
323 paint.setShader(SkGaussianEdgeShader::Make(true)); | 323 paint.setShader(SkGaussianEdgeShader::Make()); |
324 // handle scale of radius due to CTM | 324 // handle scale of radius due to CTM |
325 radius *= scaleFactors[0]; | 325 radius *= scaleFactors[0]; |
326 // don't need to scale pad as it was computed from the transformed offse
t | 326 // don't need to scale pad as it was computed from the transformed offse
t |
327 SkASSERT(radius < 16384); | 327 SkASSERT(radius < 16384); |
328 SkASSERT(pad < 64); | 328 SkASSERT(pad < 64); |
329 // Convert radius to 14.2 fixed point and place in the R & G components. | 329 // Convert radius to 14.2 fixed point and place in the R & G components. |
330 // Convert pad to 6.2 fixed point and place in the B component. | 330 // Convert pad to 6.2 fixed point and place in the B component. |
331 uint16_t iRadius = (uint16_t)(radius*4.0f); | 331 uint16_t iRadius = (uint16_t)(radius*4.0f); |
332 unsigned char alpha = (unsigned char)(spotAlpha*255.999f); | 332 unsigned char alpha = (unsigned char)(spotAlpha*255.999f); |
333 paint.setColor(SkColorSetARGB(alpha, iRadius >> 8, iRadius & 0xff, | 333 paint.setColor(SkColorSetARGB(alpha, iRadius >> 8, iRadius & 0xff, |
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420 } | 420 } |
421 | 421 |
422 private: | 422 private: |
423 typedef SkView INHERITED; | 423 typedef SkView INHERITED; |
424 }; | 424 }; |
425 | 425 |
426 ////////////////////////////////////////////////////////////////////////////// | 426 ////////////////////////////////////////////////////////////////////////////// |
427 | 427 |
428 static SkView* MyFactory() { return new ShadowsView; } | 428 static SkView* MyFactory() { return new ShadowsView; } |
429 static SkViewRegister reg(MyFactory); | 429 static SkViewRegister reg(MyFactory); |
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