SkPicture.cpp revision 0cb7df97185d5fc8780e225c912e2bc99a26aa8d
1 2/* 3 * Copyright 2007 The Android Open Source Project 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9#include "SkErrorInternals.h" 10#include "SkPictureFlat.h" 11#include "SkPicturePlayback.h" 12#include "SkPictureRecord.h" 13 14#include "SkCanvas.h" 15#include "SkChunkAlloc.h" 16#include "SkDevice.h" 17#include "SkPicture.h" 18#include "SkRegion.h" 19#include "SkStream.h" 20#include "SkTDArray.h" 21#include "SkTSearch.h" 22#include "SkTime.h" 23 24#include "SkReader32.h" 25#include "SkWriter32.h" 26#include "SkRTree.h" 27#include "SkBBoxHierarchyRecord.h" 28 29SK_DEFINE_INST_COUNT(SkPicture) 30 31#define DUMP_BUFFER_SIZE 65536 32 33//#define ENABLE_TIME_DRAW // dumps milliseconds for each draw 34 35 36#ifdef SK_DEBUG 37// enable SK_DEBUG_TRACE to trace DrawType elements when 38// recorded and played back 39// #define SK_DEBUG_TRACE 40// enable SK_DEBUG_SIZE to see the size of picture components 41// #define SK_DEBUG_SIZE 42// enable SK_DEBUG_DUMP to see the contents of recorded elements 43// #define SK_DEBUG_DUMP 44// enable SK_DEBUG_VALIDATE to check internal structures for consistency 45// #define SK_DEBUG_VALIDATE 46#endif 47 48#if defined SK_DEBUG_TRACE || defined SK_DEBUG_DUMP 49const char* DrawTypeToString(DrawType drawType) { 50 switch (drawType) { 51 case UNUSED: SkDebugf("DrawType UNUSED\n"); SkASSERT(0); break; 52 case CLIP_PATH: return "CLIP_PATH"; 53 case CLIP_REGION: return "CLIP_REGION"; 54 case CLIP_RECT: return "CLIP_RECT"; 55 case CLIP_RRECT: return "CLIP_RRECT"; 56 case CONCAT: return "CONCAT"; 57 case DRAW_BITMAP: return "DRAW_BITMAP"; 58 case DRAW_BITMAP_MATRIX: return "DRAW_BITMAP_MATRIX"; 59 case DRAW_BITMAP_NINE: return "DRAW_BITMAP_NINE"; 60 case DRAW_BITMAP_RECT_TO_RECT: return "DRAW_BITMAP_RECT_TO_RECT"; 61 case DRAW_CLEAR: return "DRAW_CLEAR"; 62 case DRAW_DATA: return "DRAW_DATA"; 63 case DRAW_OVAL: return "DRAW_OVAL"; 64 case DRAW_PAINT: return "DRAW_PAINT"; 65 case DRAW_PATH: return "DRAW_PATH"; 66 case DRAW_PICTURE: return "DRAW_PICTURE"; 67 case DRAW_POINTS: return "DRAW_POINTS"; 68 case DRAW_POS_TEXT: return "DRAW_POS_TEXT"; 69 case DRAW_POS_TEXT_TOP_BOTTOM: return "DRAW_POS_TEXT_TOP_BOTTOM"; 70 case DRAW_POS_TEXT_H: return "DRAW_POS_TEXT_H"; 71 case DRAW_POS_TEXT_H_TOP_BOTTOM: return "DRAW_POS_TEXT_H_TOP_BOTTOM"; 72 case DRAW_RECT: return "DRAW_RECT"; 73 case DRAW_RRECT: return "DRAW_RRECT"; 74 case DRAW_SPRITE: return "DRAW_SPRITE"; 75 case DRAW_TEXT: return "DRAW_TEXT"; 76 case DRAW_TEXT_ON_PATH: return "DRAW_TEXT_ON_PATH"; 77 case DRAW_TEXT_TOP_BOTTOM: return "DRAW_TEXT_TOP_BOTTOM"; 78 case DRAW_VERTICES: return "DRAW_VERTICES"; 79 case RESTORE: return "RESTORE"; 80 case ROTATE: return "ROTATE"; 81 case SAVE: return "SAVE"; 82 case SAVE_LAYER: return "SAVE_LAYER"; 83 case SCALE: return "SCALE"; 84 case SET_MATRIX: return "SET_MATRIX"; 85 case SKEW: return "SKEW"; 86 case TRANSLATE: return "TRANSLATE"; 87 case NOOP: return "NOOP"; 88 default: 89 SkDebugf("DrawType error 0x%08x\n", drawType); 90 SkASSERT(0); 91 break; 92 } 93 SkASSERT(0); 94 return NULL; 95} 96#endif 97 98#ifdef SK_DEBUG_VALIDATE 99static void validateMatrix(const SkMatrix* matrix) { 100 SkScalar scaleX = matrix->getScaleX(); 101 SkScalar scaleY = matrix->getScaleY(); 102 SkScalar skewX = matrix->getSkewX(); 103 SkScalar skewY = matrix->getSkewY(); 104 SkScalar perspX = matrix->getPerspX(); 105 SkScalar perspY = matrix->getPerspY(); 106 if (scaleX != 0 && skewX != 0) 107 SkDebugf("scaleX != 0 && skewX != 0\n"); 108 SkASSERT(scaleX == 0 || skewX == 0); 109 SkASSERT(scaleY == 0 || skewY == 0); 110 SkASSERT(perspX == 0); 111 SkASSERT(perspY == 0); 112} 113#endif 114 115 116/////////////////////////////////////////////////////////////////////////////// 117 118SkPicture::SkPicture() { 119 fRecord = NULL; 120 fPlayback = NULL; 121 fWidth = fHeight = 0; 122} 123 124SkPicture::SkPicture(const SkPicture& src) { 125 fWidth = src.fWidth; 126 fHeight = src.fHeight; 127 fRecord = NULL; 128 129 /* We want to copy the src's playback. However, if that hasn't been built 130 yet, we need to fake a call to endRecording() without actually calling 131 it (since it is destructive, and we don't want to change src). 132 */ 133 if (src.fPlayback) { 134 fPlayback = SkNEW_ARGS(SkPicturePlayback, (*src.fPlayback)); 135 } else if (src.fRecord) { 136 // here we do a fake src.endRecording() 137 fPlayback = SkNEW_ARGS(SkPicturePlayback, (*src.fRecord)); 138 } else { 139 fPlayback = NULL; 140 } 141} 142 143SkPicture::~SkPicture() { 144 SkSafeUnref(fRecord); 145 SkDELETE(fPlayback); 146} 147 148void SkPicture::swap(SkPicture& other) { 149 SkTSwap(fRecord, other.fRecord); 150 SkTSwap(fPlayback, other.fPlayback); 151 SkTSwap(fWidth, other.fWidth); 152 SkTSwap(fHeight, other.fHeight); 153} 154 155SkPicture* SkPicture::clone() const { 156 SkPicture* clonedPicture = SkNEW(SkPicture); 157 clone(clonedPicture, 1); 158 return clonedPicture; 159} 160 161void SkPicture::clone(SkPicture* pictures, int count) const { 162 SkPictCopyInfo copyInfo; 163 164 for (int i = 0; i < count; i++) { 165 SkPicture* clone = &pictures[i]; 166 167 clone->fWidth = fWidth; 168 clone->fHeight = fHeight; 169 clone->fRecord = NULL; 170 171 if (NULL != clone->fRecord) { 172 clone->fRecord->unref(); 173 clone->fRecord = NULL; 174 } 175 SkDELETE(clone->fPlayback); 176 177 /* We want to copy the src's playback. However, if that hasn't been built 178 yet, we need to fake a call to endRecording() without actually calling 179 it (since it is destructive, and we don't want to change src). 180 */ 181 if (fPlayback) { 182 clone->fPlayback = SkNEW_ARGS(SkPicturePlayback, (*fPlayback, ©Info)); 183 } else if (fRecord) { 184 // here we do a fake src.endRecording() 185 clone->fPlayback = SkNEW_ARGS(SkPicturePlayback, (*fRecord, true)); 186 } else { 187 clone->fPlayback = NULL; 188 } 189 } 190} 191 192/////////////////////////////////////////////////////////////////////////////// 193 194SkCanvas* SkPicture::beginRecording(int width, int height, 195 uint32_t recordingFlags) { 196 if (fPlayback) { 197 SkDELETE(fPlayback); 198 fPlayback = NULL; 199 } 200 201 if (NULL != fRecord) { 202 fRecord->unref(); 203 fRecord = NULL; 204 } 205 206 SkBitmap bm; 207 bm.setConfig(SkBitmap::kNo_Config, width, height); 208 SkAutoTUnref<SkDevice> dev(SkNEW_ARGS(SkDevice, (bm))); 209 210 // Must be set before calling createBBoxHierarchy 211 fWidth = width; 212 fHeight = height; 213 214 if (recordingFlags & kOptimizeForClippedPlayback_RecordingFlag) { 215 SkBBoxHierarchy* tree = this->createBBoxHierarchy(); 216 SkASSERT(NULL != tree); 217 fRecord = SkNEW_ARGS(SkBBoxHierarchyRecord, (recordingFlags, tree, dev)); 218 tree->unref(); 219 } else { 220 fRecord = SkNEW_ARGS(SkPictureRecord, (recordingFlags, dev)); 221 } 222 fRecord->beginRecording(); 223 224 return fRecord; 225} 226 227SkBBoxHierarchy* SkPicture::createBBoxHierarchy() const { 228 // These values were empirically determined to produce reasonable 229 // performance in most cases. 230 static const int kRTreeMinChildren = 6; 231 static const int kRTreeMaxChildren = 11; 232 233 SkScalar aspectRatio = SkScalarDiv(SkIntToScalar(fWidth), 234 SkIntToScalar(fHeight)); 235 return SkRTree::Create(kRTreeMinChildren, kRTreeMaxChildren, 236 aspectRatio); 237} 238 239SkCanvas* SkPicture::getRecordingCanvas() const { 240 // will be null if we are not recording 241 return fRecord; 242} 243 244void SkPicture::endRecording() { 245 if (NULL == fPlayback) { 246 if (NULL != fRecord) { 247 fRecord->endRecording(); 248 fPlayback = SkNEW_ARGS(SkPicturePlayback, (*fRecord)); 249 fRecord->unref(); 250 fRecord = NULL; 251 } 252 } 253 SkASSERT(NULL == fRecord); 254} 255 256void SkPicture::draw(SkCanvas* surface) { 257 this->endRecording(); 258 if (fPlayback) { 259 fPlayback->draw(*surface); 260 } 261} 262 263/////////////////////////////////////////////////////////////////////////////// 264 265#include "SkStream.h" 266 267SkPicture::SkPicture(SkStream* stream) { 268 this->initFromStream(stream, NULL, NULL); 269} 270 271SkPicture::SkPicture(SkStream* stream, bool* success, InstallPixelRefProc proc) { 272 this->initFromStream(stream, success, proc); 273} 274 275void SkPicture::initFromStream(SkStream* stream, bool* success, InstallPixelRefProc proc) { 276 if (success) { 277 *success = false; 278 } 279 fRecord = NULL; 280 fPlayback = NULL; 281 fWidth = fHeight = 0; 282 283 SkPictInfo info; 284 285 if (!stream->read(&info, sizeof(info))) { 286 SkErrorInternals::SetError(kParseError_SkError, "Failed to parse skp info."); 287 return; 288 } 289 290 if (info.fVersion < 10 || info.fVersion > PICTURE_VERSION) { 291 SkErrorInternals::SetError(kParseError_SkError, "skp version %d not supported.", 292 info.fVersion); 293 return; 294 } 295 296 if (stream->readBool()) { 297 fPlayback = SkNEW_ARGS(SkPicturePlayback, (stream, info, proc)); 298 } 299 300 // do this at the end, so that they will be zero if we hit an error. 301 fWidth = info.fWidth; 302 fHeight = info.fHeight; 303 if (success) { 304 *success = true; 305 } 306} 307 308void SkPicture::serialize(SkWStream* stream, EncodeBitmap encoder) const { 309 SkPicturePlayback* playback = fPlayback; 310 311 if (NULL == playback && fRecord) { 312 playback = SkNEW_ARGS(SkPicturePlayback, (*fRecord)); 313 } 314 315 SkPictInfo info; 316 317 info.fVersion = PICTURE_VERSION; 318 info.fWidth = fWidth; 319 info.fHeight = fHeight; 320 info.fFlags = SkPictInfo::kCrossProcess_Flag; 321#ifdef SK_SCALAR_IS_FLOAT 322 info.fFlags |= SkPictInfo::kScalarIsFloat_Flag; 323#endif 324 if (8 == sizeof(void*)) { 325 info.fFlags |= SkPictInfo::kPtrIs64Bit_Flag; 326 } 327 328 stream->write(&info, sizeof(info)); 329 if (playback) { 330 stream->writeBool(true); 331 playback->serialize(stream, encoder); 332 // delete playback if it is a local version (i.e. cons'd up just now) 333 if (playback != fPlayback) { 334 SkDELETE(playback); 335 } 336 } else { 337 stream->writeBool(false); 338 } 339} 340 341#ifdef SK_BUILD_FOR_ANDROID 342void SkPicture::abortPlayback() { 343 if (NULL == fPlayback) { 344 return; 345 } 346 fPlayback->abort(); 347} 348#endif 349