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| 1 /* | |
| 2 * Copyright 2006 The Android Open Source Project | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 | |
| 9 #include "SkSVGParser.h" | |
| 10 #include "SkSVGCircle.h" | |
| 11 #include "SkSVGClipPath.h" | |
| 12 #include "SkSVGDefs.h" | |
| 13 #include "SkSVGEllipse.h" | |
| 14 #include "SkSVGFeColorMatrix.h" | |
| 15 #include "SkSVGFilter.h" | |
| 16 #include "SkSVGG.h" | |
| 17 #include "SkSVGImage.h" | |
| 18 #include "SkSVGLine.h" | |
| 19 #include "SkSVGLinearGradient.h" | |
| 20 #include "SkSVGMask.h" | |
| 21 #include "SkSVGMetadata.h" | |
| 22 #include "SkSVGPath.h" | |
| 23 #include "SkSVGPolygon.h" | |
| 24 #include "SkSVGPolyline.h" | |
| 25 #include "SkSVGRadialGradient.h" | |
| 26 #include "SkSVGRect.h" | |
| 27 #include "SkSVGSVG.h" | |
| 28 #include "SkSVGStop.h" | |
| 29 #include "SkSVGSymbol.h" | |
| 30 #include "SkSVGText.h" | |
| 31 #include "SkSVGUse.h" | |
| 32 #include "SkTSearch.h" | |
| 33 #include <stdio.h> | |
| 34 | |
| 35 static int gGeneratedMatrixID = 0; | |
| 36 | |
| 37 SkSVGParser::SkSVGParser(SkXMLParserError* errHandler) : | |
| 38 SkXMLParser(errHandler), | |
| 39 fHead(&fEmptyPaint), fIDs(256), | |
| 40 fXMLWriter(&fStream), fCurrElement(nullptr), fInSVG(false), fSuppressPai
nt(false) { | |
| 41 fLastTransform.reset(); | |
| 42 fEmptyPaint.f_fill.set("black"); | |
| 43 fEmptyPaint.f_stroke.set("none"); | |
| 44 fEmptyPaint.f_strokeMiterlimit.set("4"); | |
| 45 fEmptyPaint.f_fillRule.set("winding"); | |
| 46 fEmptyPaint.f_opacity.set("1"); | |
| 47 fEmptyPaint.fNext = nullptr; | |
| 48 for (int index = SkSVGPaint::kInitial + 1; index < SkSVGPaint::kTerminal; in
dex++) { | |
| 49 SkString* initial = fEmptyPaint[index]; | |
| 50 if (initial->size() == 0) | |
| 51 continue; | |
| 52 fLastFlush[index]->set(*initial); | |
| 53 } | |
| 54 } | |
| 55 | |
| 56 SkSVGParser::~SkSVGParser() { | |
| 57 } | |
| 58 | |
| 59 void SkSVGParser::Delete(SkTDArray<SkSVGElement*>& fChildren) { | |
| 60 SkSVGElement** ptr; | |
| 61 for (ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) { | |
| 62 Delete((*ptr)->fChildren); | |
| 63 delete *ptr; | |
| 64 } | |
| 65 } | |
| 66 | |
| 67 int SkSVGParser::findAttribute(SkSVGBase* element, const char* attrValue, | |
| 68 size_t len, bool isPaint) { | |
| 69 const SkSVGAttribute* attributes; | |
| 70 size_t count = element->getAttributes(&attributes); | |
| 71 size_t result = 0; | |
| 72 while (result < count) { | |
| 73 if (strncmp(attributes->fName, attrValue, len) == 0 && strlen(attributes
->fName) == len) { | |
| 74 SkASSERT(result == (attributes->fOffset - | |
| 75 (isPaint ? sizeof(SkString) : sizeof(SkSVGElement))) / sizeof(Sk
String)); | |
| 76 return result; | |
| 77 } | |
| 78 attributes++; | |
| 79 result++; | |
| 80 } | |
| 81 return -1; | |
| 82 } | |
| 83 | |
| 84 #if 0 | |
| 85 const char* SkSVGParser::getFinal() { | |
| 86 _startElement("screenplay"); | |
| 87 // generate defs | |
| 88 SkSVGElement** ptr; | |
| 89 for (ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) { | |
| 90 SkSVGElement* element = *ptr; | |
| 91 translate(element, true); | |
| 92 } | |
| 93 // generate onLoad | |
| 94 _startElement("event"); | |
| 95 _addAttribute("kind", "onLoad"); | |
| 96 _startElement("paint"); | |
| 97 _addAttribute("antiAlias", "true"); | |
| 98 _endElement(); | |
| 99 for (ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) { | |
| 100 SkSVGElement* element = *ptr; | |
| 101 translate(element, false); | |
| 102 } | |
| 103 _endElement(); // event | |
| 104 _endElement(); // screenplay | |
| 105 Delete(fChildren); | |
| 106 fStream.write("", 1); | |
| 107 return fStream.getStream(); | |
| 108 } | |
| 109 #endif | |
| 110 | |
| 111 SkString& SkSVGParser::getPaintLast(SkSVGPaint::Field field) { | |
| 112 SkSVGPaint* state = fHead; | |
| 113 do { | |
| 114 SkString* attr = (*state)[field]; | |
| 115 SkASSERT(attr); | |
| 116 if (attr->size() > 0) | |
| 117 return *attr; | |
| 118 state = state->fNext; | |
| 119 } while (state); | |
| 120 SkASSERT(0); | |
| 121 SkASSERT(fEmptyPaint[field]); | |
| 122 return *fEmptyPaint[field]; | |
| 123 } | |
| 124 | |
| 125 bool SkSVGParser::isStrokeAndFill( SkSVGPaint** strokeState, SkSVGPaint** fillS
tate) { | |
| 126 SkSVGPaint* walking = fHead; | |
| 127 bool stroke = false; | |
| 128 bool fill = false; | |
| 129 bool strokeSet = false; | |
| 130 bool fillSet = false; | |
| 131 while (walking != nullptr) { | |
| 132 if (strokeSet == false && walking->f_stroke.size() > 0) { | |
| 133 stroke = walking->f_stroke.equals("none") == false; | |
| 134 *strokeState = walking; | |
| 135 strokeSet = true; | |
| 136 } | |
| 137 if (fillSet == false && walking->f_fill.size() > 0) { | |
| 138 fill = walking->f_fill.equals("none") == false; | |
| 139 *fillState = walking; | |
| 140 fillSet = true; | |
| 141 } | |
| 142 walking = walking->fNext; | |
| 143 } | |
| 144 return stroke && fill; | |
| 145 } | |
| 146 | |
| 147 bool SkSVGParser::onAddAttribute(const char name[], const char value[]) { | |
| 148 return onAddAttributeLen(name, value, strlen(value)); | |
| 149 } | |
| 150 | |
| 151 bool SkSVGParser::onAddAttributeLen(const char name[], const char value[], size_
t len) { | |
| 152 if (fCurrElement == nullptr) // this signals we should ignore attributes
for this element | |
| 153 return true; | |
| 154 if (fCurrElement->fIsDef == false && fCurrElement->fIsNotDef == false) | |
| 155 return false; // also an ignored element | |
| 156 size_t nameLen = strlen(name); | |
| 157 int attrIndex = findAttribute(fCurrElement, name, nameLen, false); | |
| 158 if (attrIndex == -1) { | |
| 159 attrIndex = findAttribute(&fCurrElement->fPaintState, name, nameLen, tru
e); | |
| 160 if (attrIndex >= 0) { | |
| 161 fCurrElement->fPaintState.addAttribute(*this, attrIndex, value, len)
; | |
| 162 return false; | |
| 163 } | |
| 164 if (nameLen == 2 && strncmp("id", name, nameLen) == 0) { | |
| 165 fCurrElement->f_id.set(value, len); | |
| 166 return false; | |
| 167 } | |
| 168 if (strchr(name, ':') != 0) // part of a different namespace | |
| 169 return false; | |
| 170 } | |
| 171 SkASSERT(attrIndex >= 0); | |
| 172 fCurrElement->addAttribute(*this, attrIndex, value, len); | |
| 173 return false; | |
| 174 } | |
| 175 | |
| 176 bool SkSVGParser::onEndElement(const char elem[]) { | |
| 177 int parentIndex = fParents.count() - 1; | |
| 178 if (parentIndex >= 0) { | |
| 179 SkSVGElement* element = fParents[parentIndex]; | |
| 180 element->onEndElement(*this); | |
| 181 fParents.remove(parentIndex); | |
| 182 } | |
| 183 return false; | |
| 184 } | |
| 185 | |
| 186 bool SkSVGParser::onStartElement(const char name[]) { | |
| 187 return onStartElementLen(name, strlen(name)); | |
| 188 } | |
| 189 | |
| 190 bool SkSVGParser::onStartElementLen(const char name[], size_t len) { | |
| 191 if (strncmp(name, "svg", len) == 0) { | |
| 192 fInSVG = true; | |
| 193 } else if (fInSVG == false) | |
| 194 return false; | |
| 195 const char* nextColon = strchr(name, ':'); | |
| 196 if (nextColon && (size_t)(nextColon - name) < len) | |
| 197 return false; | |
| 198 SkSVGTypes type = GetType(name, len); | |
| 199 // SkASSERT(type >= 0); | |
| 200 if (type < 0) { | |
| 201 type = SkSVGType_G; | |
| 202 // return true; | |
| 203 } | |
| 204 SkSVGElement* parent = fParents.count() > 0 ? fParents.top() : nullptr; | |
| 205 SkSVGElement* element = CreateElement(type, parent); | |
| 206 bool result = false; | |
| 207 if (parent) { | |
| 208 element->fParent = parent; | |
| 209 result = fParents.top()->onStartElement(element); | |
| 210 } else | |
| 211 *fChildren.append() = element; | |
| 212 if (strncmp(name, "svg", len) != 0) | |
| 213 *fParents.append() = element; | |
| 214 fCurrElement = element; | |
| 215 return result; | |
| 216 } | |
| 217 | |
| 218 bool SkSVGParser::onText(const char text[], int len) { | |
| 219 if (fInSVG == false) | |
| 220 return false; | |
| 221 SkSVGTypes type = fCurrElement->getType(); | |
| 222 if (type != SkSVGType_Text && type != SkSVGType_Tspan) | |
| 223 return false; | |
| 224 SkSVGText* textElement = (SkSVGText*) fCurrElement; | |
| 225 textElement->f_text.set(text, len); | |
| 226 return false; | |
| 227 } | |
| 228 | |
| 229 static int32_t strokeFillID = 0; | |
| 230 | |
| 231 void SkSVGParser::translate(SkSVGElement* element, bool isDef) { | |
| 232 SkSVGPaint::Push(&fHead, &element->fPaintState); | |
| 233 bool isFlushable = element->isFlushable(); | |
| 234 if ((element->fIsDef == false && element->fIsNotDef == false) || | |
| 235 (element->fIsDef && isDef == false && element->fIsNotDef == false) || | |
| 236 (element->fIsDef == false && isDef && element->fIsNotDef)) { | |
| 237 isFlushable = false; | |
| 238 } | |
| 239 SkSVGPaint* strokeState = nullptr, * fillState = nullptr; | |
| 240 if (isFlushable) | |
| 241 element->fPaintState.setSave(*this); | |
| 242 if (isFlushable && isStrokeAndFill(&strokeState, &fillState)) { | |
| 243 SkString& elementID = element->f_id; | |
| 244 if (elementID.size() == 0) { | |
| 245 elementID.set("sf"); | |
| 246 elementID.appendS32(++strokeFillID); | |
| 247 } | |
| 248 SkString saveStroke(strokeState->f_stroke); | |
| 249 SkString saveFill(fillState->f_fill); | |
| 250 strokeState->f_stroke.set("none"); | |
| 251 element->fPaintState.flush(*this, isFlushable, isDef); | |
| 252 element->translate(*this, isDef); | |
| 253 strokeState->f_stroke.set(saveStroke); | |
| 254 fillState->f_fill.set("none"); | |
| 255 if (element->fPaintState.flush(*this, isFlushable, isDef)) { | |
| 256 _startElement("add"); | |
| 257 _addAttributeLen("use", elementID.c_str(), elementID.size()); | |
| 258 _endElement(); // add | |
| 259 } | |
| 260 fillState->f_fill.set(saveFill); | |
| 261 } else { | |
| 262 element->fPaintState.flush(*this, isFlushable, isDef); | |
| 263 if (isFlushable || element->isGroup()) | |
| 264 element->translate(*this, isDef); | |
| 265 } | |
| 266 SkSVGPaint::Pop(&fHead); | |
| 267 } | |
| 268 | |
| 269 void SkSVGParser::translateMatrix(SkString& string, SkString* stringID) { | |
| 270 if (string.size() == 0) | |
| 271 return; | |
| 272 if (stringID->size() > 0) { | |
| 273 _startElement("add"); | |
| 274 _addAttribute("use", stringID->c_str()); | |
| 275 _endElement(); // add | |
| 276 return; | |
| 277 } | |
| 278 SkASSERT(strncmp(string.c_str(), "matrix", 6) == 0); | |
| 279 ++gGeneratedMatrixID; | |
| 280 _startElement("matrix"); | |
| 281 char idStr[24]; | |
| 282 strcpy(idStr, "sk_matrix"); | |
| 283 sprintf(idStr + strlen(idStr), "%d", gGeneratedMatrixID); | |
| 284 _addAttribute("id", idStr); | |
| 285 stringID->set(idStr); | |
| 286 const char* str = string.c_str(); | |
| 287 SkASSERT(strncmp(str, "matrix(", 7) == 0); | |
| 288 str += 6; | |
| 289 const char* strEnd = strrchr(str, ')'); | |
| 290 SkASSERT(strEnd != nullptr); | |
| 291 SkString mat(str, strEnd - str); | |
| 292 ConvertToArray(mat); | |
| 293 const char* elems[6]; | |
| 294 static const int order[] = {0, 3, 1, 4, 2, 5}; | |
| 295 const int* orderPtr = order; | |
| 296 str = mat.c_str(); | |
| 297 strEnd = str + mat.size(); | |
| 298 while (str < strEnd) { | |
| 299 elems[*orderPtr++] = str; | |
| 300 while (str < strEnd && *str != ',' ) | |
| 301 str++; | |
| 302 str++; | |
| 303 } | |
| 304 string.reset(); | |
| 305 for (int index = 0; index < 6; index++) { | |
| 306 const char* end = strchr(elems[index], ','); | |
| 307 if (end == nullptr) | |
| 308 end= strchr(elems[index], ']'); | |
| 309 string.append(elems[index], end - elems[index] + 1); | |
| 310 } | |
| 311 string.remove(string.size() - 1, 1); | |
| 312 string.append(",0,0,1]"); | |
| 313 _addAttribute("matrix", string); | |
| 314 _endElement(); // matrix | |
| 315 } | |
| 316 | |
| 317 static bool is_whitespace(char ch) { | |
| 318 return ch > 0 && ch <= ' '; | |
| 319 } | |
| 320 | |
| 321 void SkSVGParser::ConvertToArray(SkString& vals) { | |
| 322 vals.appendUnichar(']'); | |
| 323 char* valCh = (char*) vals.c_str(); | |
| 324 valCh[0] = '['; | |
| 325 int index = 1; | |
| 326 while (valCh[index] != ']') { | |
| 327 while (is_whitespace(valCh[index])) | |
| 328 index++; | |
| 329 bool foundComma = false; | |
| 330 char next; | |
| 331 do { | |
| 332 next = valCh[index++]; | |
| 333 if (next == ',') { | |
| 334 foundComma = true; | |
| 335 continue; | |
| 336 } | |
| 337 if (next == ']') { | |
| 338 index--; | |
| 339 goto undoLastComma; | |
| 340 } | |
| 341 if (next == ' ') | |
| 342 break; | |
| 343 foundComma = false; | |
| 344 } while (is_whitespace(next) == false); | |
| 345 if (foundComma == false) | |
| 346 valCh[index - 1] = ','; | |
| 347 } | |
| 348 undoLastComma: | |
| 349 while (is_whitespace(valCh[--index])) | |
| 350 ; | |
| 351 if (valCh[index] == ',') | |
| 352 valCh[index] = ' '; | |
| 353 } | |
| 354 | |
| 355 #define CASE_NEW(type) case SkSVGType_##type : created = new SkSVG##type(); brea
k | |
| 356 | |
| 357 SkSVGElement* SkSVGParser::CreateElement(SkSVGTypes type, SkSVGElement* parent)
{ | |
| 358 SkSVGElement* created = nullptr; | |
| 359 switch (type) { | |
| 360 CASE_NEW(Circle); | |
| 361 CASE_NEW(ClipPath); | |
| 362 CASE_NEW(Defs); | |
| 363 CASE_NEW(Ellipse); | |
| 364 CASE_NEW(FeColorMatrix); | |
| 365 CASE_NEW(Filter); | |
| 366 CASE_NEW(G); | |
| 367 CASE_NEW(Image); | |
| 368 CASE_NEW(Line); | |
| 369 CASE_NEW(LinearGradient); | |
| 370 CASE_NEW(Mask); | |
| 371 CASE_NEW(Metadata); | |
| 372 CASE_NEW(Path); | |
| 373 CASE_NEW(Polygon); | |
| 374 CASE_NEW(Polyline); | |
| 375 CASE_NEW(RadialGradient); | |
| 376 CASE_NEW(Rect); | |
| 377 CASE_NEW(Stop); | |
| 378 CASE_NEW(SVG); | |
| 379 CASE_NEW(Symbol); | |
| 380 CASE_NEW(Text); | |
| 381 CASE_NEW(Tspan); | |
| 382 CASE_NEW(Use); | |
| 383 default: | |
| 384 SkASSERT(0); | |
| 385 return nullptr; | |
| 386 } | |
| 387 created->fParent = parent; | |
| 388 bool isDef = created->fIsDef = created->isDef(); | |
| 389 bool isNotDef = created->fIsNotDef = created->isNotDef(); | |
| 390 if (isDef) { | |
| 391 SkSVGElement* up = parent; | |
| 392 while (up && up->fIsDef == false) { | |
| 393 up->fIsDef = true; | |
| 394 up = up->fParent; | |
| 395 } | |
| 396 } | |
| 397 if (isNotDef) { | |
| 398 SkSVGElement* up = parent; | |
| 399 while (up && up->fIsNotDef == false) { | |
| 400 up->fIsNotDef = true; | |
| 401 up = up->fParent; | |
| 402 } | |
| 403 } | |
| 404 return created; | |
| 405 } | |
| 406 | |
| 407 const SkSVGTypeName gSVGTypeNames[] = { | |
| 408 {"circle", SkSVGType_Circle}, | |
| 409 {"clipPath", SkSVGType_ClipPath}, | |
| 410 {"defs", SkSVGType_Defs}, | |
| 411 {"ellipse", SkSVGType_Ellipse}, | |
| 412 {"feColorMatrix", SkSVGType_FeColorMatrix}, | |
| 413 {"filter", SkSVGType_Filter}, | |
| 414 {"g", SkSVGType_G}, | |
| 415 {"image", SkSVGType_Image}, | |
| 416 {"line", SkSVGType_Line}, | |
| 417 {"linearGradient", SkSVGType_LinearGradient}, | |
| 418 {"mask", SkSVGType_Mask}, | |
| 419 {"metadata", SkSVGType_Metadata}, | |
| 420 {"path", SkSVGType_Path}, | |
| 421 {"polygon", SkSVGType_Polygon}, | |
| 422 {"polyline", SkSVGType_Polyline}, | |
| 423 {"radialGradient", SkSVGType_RadialGradient}, | |
| 424 {"rect", SkSVGType_Rect}, | |
| 425 {"stop", SkSVGType_Stop}, | |
| 426 {"svg", SkSVGType_SVG}, | |
| 427 {"symbol", SkSVGType_Symbol}, | |
| 428 {"text", SkSVGType_Text}, | |
| 429 {"tspan", SkSVGType_Tspan}, | |
| 430 {"use", SkSVGType_Use} | |
| 431 }; | |
| 432 | |
| 433 const int kSVGTypeNamesSize = SK_ARRAY_COUNT(gSVGTypeNames); | |
| 434 | |
| 435 SkSVGTypes SkSVGParser::GetType(const char match[], size_t len ) { | |
| 436 int index = SkStrSearch(&gSVGTypeNames[0].fName, kSVGTypeNamesSize, match, | |
| 437 len, sizeof(gSVGTypeNames[0])); | |
| 438 return index >= 0 && index < kSVGTypeNamesSize ? gSVGTypeNames[index].fType
: | |
| 439 (SkSVGTypes) -1; | |
| 440 } | |
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Chromium Code Reviews
Issue 2154193003:
Delete the legacy SVG parser (Closed)
Base URL: https://chromium.googlesource.com/skia.git@master