18e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project/* 28e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * Copyright 2006, The Android Open Source Project 38e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 48e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * Redistribution and use in source and binary forms, with or without 58e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * modification, are permitted provided that the following conditions 68e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * are met: 78e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * * Redistributions of source code must retain the above copyright 88e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * notice, this list of conditions and the following disclaimer. 98e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * * Redistributions in binary form must reproduce the above copyright 108e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * notice, this list of conditions and the following disclaimer in the 118e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * documentation and/or other materials provided with the distribution. 128e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 138e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY 148e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 158e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16e03118fd5d9b776df29de3f96232ed6b5395c845Steve Block * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 178e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 188e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 198e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 208e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 218e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 228e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 238e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 248e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project */ 258e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 268e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "config.h" 278e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "Gradient.h" 288e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 298e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "android_graphics.h" 308e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "CSSParser.h" 318e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "GraphicsContext.h" 328e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "NotImplemented.h" 338e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "SkCanvas.h" 348e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "SkColorShader.h" 358e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "SkGradientShader.h" 368e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "SkPaint.h" 378e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 388e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass PlatformGradientRec { 398e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectpublic: 408e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project PlatformGradientRec() : m_shader(NULL) {} 41b33016812afef21c69df5ab3d5b85eab5fef7c5cDerek Sollenberger ~PlatformGradientRec() { SkSafeUnref(m_shader); } 428e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 438e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project SkShader* m_shader; 448e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project SkShader::TileMode m_tileMode; 458a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike Reed int m_colorCountWhenShaderWasBuilt; 468e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project}; 478e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 488e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectnamespace WebCore { 498e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 508e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectvoid Gradient::platformDestroy() 518e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 528e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project delete m_gradient; 538e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project m_gradient = 0; 548e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 558e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 568e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectstatic U8CPU F2B(float x) 578e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 588e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return (int)(x * 255); 598e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 608e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 618a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike ReedSkShader* Gradient::getShader(SkShader::TileMode mode) 628a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike Reed{ 638a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike Reed if (NULL == m_gradient) 648e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project m_gradient = new PlatformGradientRec; 658a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike Reed else if (mode == m_gradient->m_tileMode) 668e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return m_gradient->m_shader; 678a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike Reed 688a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike Reed // need to ensure that the m_stops array is sorted. We call getColor() 698a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike Reed // which, as a side effect, does the sort. 708a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike Reed // TODO: refactor Gradient.h to formally expose a sort method 718a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike Reed { 728a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike Reed float r, g, b, a; 738a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike Reed this->getColor(0, &r, &g, &b, &a); 748e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 758e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 768535e17115184dbb5e448b6364b88eb52df34482Mike Reed SkPoint pts[2] = { m_p0, m_p1 }; // convert to SkPoint 778a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike Reed 788a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike Reed const size_t count = m_stops.size(); 798e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project SkAutoMalloc storage(count * (sizeof(SkColor) + sizeof(SkScalar))); 808e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project SkColor* colors = (SkColor*)storage.get(); 818e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project SkScalar* pos = (SkScalar*)(colors + count); 828e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 838e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project Vector<ColorStop>::iterator iter = m_stops.begin(); 848a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike Reed for (int i = 0; iter != m_stops.end(); i++) { 858e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project pos[i] = SkFloatToScalar(iter->stop); 868e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project colors[i] = SkColorSetARGB(F2B(iter->alpha), F2B(iter->red), 878a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike Reed F2B(iter->green), F2B(iter->blue)); 888e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project ++iter; 898e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 908e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 918e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project SkShader* s; 928a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike Reed if (m_radial) 93272b2e99702f8b2ef167a06dd77bc52122d9dd1cMike Reed s = SkGradientShader::CreateTwoPointRadial(pts[0], 94272b2e99702f8b2ef167a06dd77bc52122d9dd1cMike Reed SkFloatToScalar(m_r0), 95272b2e99702f8b2ef167a06dd77bc52122d9dd1cMike Reed pts[1], 96272b2e99702f8b2ef167a06dd77bc52122d9dd1cMike Reed SkFloatToScalar(m_r1), 97272b2e99702f8b2ef167a06dd77bc52122d9dd1cMike Reed colors, pos, count, mode); 988a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike Reed else 998e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project s = SkGradientShader::CreateLinear(pts, colors, pos, count, mode); 1008e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1018a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike Reed if (NULL == s) 1028a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike Reed s = new SkColorShader(0); 1038a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike Reed 1048a879ade4178f72acdea7654ec3ce57ee6c4d9fbMike Reed // zap our previous shader, if present 105b33016812afef21c69df5ab3d5b85eab5fef7c5cDerek Sollenberger SkSafeUnref(m_gradient->m_shader); 1068e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project m_gradient->m_shader = s; 1078e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project m_gradient->m_tileMode = mode; 108781eb1e80ed736b825aec967c3cc711f01516200Cary Clark SkMatrix matrix = m_gradientSpaceTransformation; 109781eb1e80ed736b825aec967c3cc711f01516200Cary Clark s->setLocalMatrix(matrix); 110781eb1e80ed736b825aec967c3cc711f01516200Cary Clark 1118e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return s; 1128e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 1138e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1148e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectvoid Gradient::fill(GraphicsContext* context, const FloatRect& rect) 1158e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 1168e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project SkRect r; 1178e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project SkPaint paint; 1188e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // we don't care about the mode, so try to use the existing one 1198e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project SkShader::TileMode mode = m_gradient ? m_gradient->m_tileMode : 1208e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project SkShader::kClamp_TileMode; 1218e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1228e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project paint.setAntiAlias(true); 1238e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project paint.setShader(this->getShader(mode)); 1248535e17115184dbb5e448b6364b88eb52df34482Mike Reed android_gc2canvas(context)->drawRect(rect, paint); 1258e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 1268e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1278e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1288e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} //namespace 129