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| 1 | |
| 2 /* | |
| 3 * Copyright 2006 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 | |
| 10 #include "SkSVGParser.h" | |
| 11 #include "SkSVGCircle.h" | |
| 12 #include "SkSVGClipPath.h" | |
| 13 #include "SkSVGDefs.h" | |
| 14 #include "SkSVGEllipse.h" | |
| 15 #include "SkSVGFeColorMatrix.h" | |
| 16 #include "SkSVGFilter.h" | |
| 17 #include "SkSVGG.h" | |
| 18 #include "SkSVGImage.h" | |
| 19 #include "SkSVGLine.h" | |
| 20 #include "SkSVGLinearGradient.h" | |
| 21 #include "SkSVGMask.h" | |
| 22 #include "SkSVGMetadata.h" | |
| 23 #include "SkSVGPath.h" | |
| 24 #include "SkSVGPolygon.h" | |
| 25 #include "SkSVGPolyline.h" | |
| 26 #include "SkSVGRadialGradient.h" | |
| 27 #include "SkSVGRect.h" | |
| 28 #include "SkSVGSVG.h" | |
| 29 #include "SkSVGStop.h" | |
| 30 #include "SkSVGSymbol.h" | |
| 31 #include "SkSVGText.h" | |
| 32 #include "SkSVGUse.h" | |
| 33 #include "SkTSearch.h" | |
| 34 #include <stdio.h> | |
| 35 | |
| 36 static int gGeneratedMatrixID = 0; | |
| 37 | |
| 38 SkSVGParser::SkSVGParser(SkXMLParserError* errHandler) : | |
| 39 SkXMLParser(errHandler), | |
| 40 fHead(&fEmptyPaint), fIDs(256), | |
| 41 fXMLWriter(&fStream), fCurrElement(NULL), fInSVG(false), fSuppressPaint(
false) { | |
| 42 fLastTransform.reset(); | |
| 43 fEmptyPaint.f_fill.set("black"); | |
| 44 fEmptyPaint.f_stroke.set("none"); | |
| 45 fEmptyPaint.f_strokeMiterlimit.set("4"); | |
| 46 fEmptyPaint.f_fillRule.set("winding"); | |
| 47 fEmptyPaint.f_opacity.set("1"); | |
| 48 fEmptyPaint.fNext = NULL; | |
| 49 for (int index = SkSVGPaint::kInitial + 1; index < SkSVGPaint::kTerminal; in
dex++) { | |
| 50 SkString* initial = fEmptyPaint[index]; | |
| 51 if (initial->size() == 0) | |
| 52 continue; | |
| 53 fLastFlush[index]->set(*initial); | |
| 54 } | |
| 55 } | |
| 56 | |
| 57 SkSVGParser::~SkSVGParser() { | |
| 58 } | |
| 59 | |
| 60 void SkSVGParser::Delete(SkTDArray<SkSVGElement*>& fChildren) { | |
| 61 SkSVGElement** ptr; | |
| 62 for (ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) { | |
| 63 Delete((*ptr)->fChildren); | |
| 64 delete *ptr; | |
| 65 } | |
| 66 } | |
| 67 | |
| 68 int SkSVGParser::findAttribute(SkSVGBase* element, const char* attrValue, | |
| 69 size_t len, bool isPaint) { | |
| 70 const SkSVGAttribute* attributes; | |
| 71 size_t count = element->getAttributes(&attributes); | |
| 72 size_t result = 0; | |
| 73 while (result < count) { | |
| 74 if (strncmp(attributes->fName, attrValue, len) == 0 && strlen(attributes
->fName) == len) { | |
| 75 SkASSERT(result == (attributes->fOffset - | |
| 76 (isPaint ? sizeof(SkString) : sizeof(SkSVGElement))) / sizeof(Sk
String)); | |
| 77 return result; | |
| 78 } | |
| 79 attributes++; | |
| 80 result++; | |
| 81 } | |
| 82 return -1; | |
| 83 } | |
| 84 | |
| 85 #if 0 | |
| 86 const char* SkSVGParser::getFinal() { | |
| 87 _startElement("screenplay"); | |
| 88 // generate defs | |
| 89 SkSVGElement** ptr; | |
| 90 for (ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) { | |
| 91 SkSVGElement* element = *ptr; | |
| 92 translate(element, true); | |
| 93 } | |
| 94 // generate onLoad | |
| 95 _startElement("event"); | |
| 96 _addAttribute("kind", "onLoad"); | |
| 97 _startElement("paint"); | |
| 98 _addAttribute("antiAlias", "true"); | |
| 99 _endElement(); | |
| 100 for (ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) { | |
| 101 SkSVGElement* element = *ptr; | |
| 102 translate(element, false); | |
| 103 } | |
| 104 _endElement(); // event | |
| 105 _endElement(); // screenplay | |
| 106 Delete(fChildren); | |
| 107 fStream.write("", 1); | |
| 108 return fStream.getStream(); | |
| 109 } | |
| 110 #endif | |
| 111 | |
| 112 SkString& SkSVGParser::getPaintLast(SkSVGPaint::Field field) { | |
| 113 SkSVGPaint* state = fHead; | |
| 114 do { | |
| 115 SkString* attr = (*state)[field]; | |
| 116 SkASSERT(attr); | |
| 117 if (attr->size() > 0) | |
| 118 return *attr; | |
| 119 state = state->fNext; | |
| 120 } while (state); | |
| 121 SkASSERT(0); | |
| 122 SkASSERT(fEmptyPaint[field]); | |
| 123 return *fEmptyPaint[field]; | |
| 124 } | |
| 125 | |
| 126 bool SkSVGParser::isStrokeAndFill( SkSVGPaint** strokeState, SkSVGPaint** fillS
tate) { | |
| 127 SkSVGPaint* walking = fHead; | |
| 128 bool stroke = false; | |
| 129 bool fill = false; | |
| 130 bool strokeSet = false; | |
| 131 bool fillSet = false; | |
| 132 while (walking != NULL) { | |
| 133 if (strokeSet == false && walking->f_stroke.size() > 0) { | |
| 134 stroke = walking->f_stroke.equals("none") == false; | |
| 135 *strokeState = walking; | |
| 136 strokeSet = true; | |
| 137 } | |
| 138 if (fillSet == false && walking->f_fill.size() > 0) { | |
| 139 fill = walking->f_fill.equals("none") == false; | |
| 140 *fillState = walking; | |
| 141 fillSet = true; | |
| 142 } | |
| 143 walking = walking->fNext; | |
| 144 } | |
| 145 return stroke && fill; | |
| 146 } | |
| 147 | |
| 148 bool SkSVGParser::onAddAttribute(const char name[], const char value[]) { | |
| 149 return onAddAttributeLen(name, value, strlen(value)); | |
| 150 } | |
| 151 | |
| 152 bool SkSVGParser::onAddAttributeLen(const char name[], const char value[], size_
t len) { | |
| 153 if (fCurrElement == NULL) // this signals we should ignore attributes for
this element | |
| 154 return true; | |
| 155 if (fCurrElement->fIsDef == false && fCurrElement->fIsNotDef == false) | |
| 156 return false; // also an ignored element | |
| 157 size_t nameLen = strlen(name); | |
| 158 int attrIndex = findAttribute(fCurrElement, name, nameLen, false); | |
| 159 if (attrIndex == -1) { | |
| 160 attrIndex = findAttribute(&fCurrElement->fPaintState, name, nameLen, tru
e); | |
| 161 if (attrIndex >= 0) { | |
| 162 fCurrElement->fPaintState.addAttribute(*this, attrIndex, value, len)
; | |
| 163 return false; | |
| 164 } | |
| 165 if (nameLen == 2 && strncmp("id", name, nameLen) == 0) { | |
| 166 fCurrElement->f_id.set(value, len); | |
| 167 return false; | |
| 168 } | |
| 169 if (strchr(name, ':') != 0) // part of a different namespace | |
| 170 return false; | |
| 171 } | |
| 172 SkASSERT(attrIndex >= 0); | |
| 173 fCurrElement->addAttribute(*this, attrIndex, value, len); | |
| 174 return false; | |
| 175 } | |
| 176 | |
| 177 bool SkSVGParser::onEndElement(const char elem[]) { | |
| 178 int parentIndex = fParents.count() - 1; | |
| 179 if (parentIndex >= 0) { | |
| 180 SkSVGElement* element = fParents[parentIndex]; | |
| 181 element->onEndElement(*this); | |
| 182 fParents.remove(parentIndex); | |
| 183 } | |
| 184 return false; | |
| 185 } | |
| 186 | |
| 187 bool SkSVGParser::onStartElement(const char name[]) { | |
| 188 return onStartElementLen(name, strlen(name)); | |
| 189 } | |
| 190 | |
| 191 bool SkSVGParser::onStartElementLen(const char name[], size_t len) { | |
| 192 if (strncmp(name, "svg", len) == 0) { | |
| 193 fInSVG = true; | |
| 194 } else if (fInSVG == false) | |
| 195 return false; | |
| 196 const char* nextColon = strchr(name, ':'); | |
| 197 if (nextColon && (size_t)(nextColon - name) < len) | |
| 198 return false; | |
| 199 SkSVGTypes type = GetType(name, len); | |
| 200 // SkASSERT(type >= 0); | |
| 201 if (type < 0) { | |
| 202 type = SkSVGType_G; | |
| 203 // return true; | |
| 204 } | |
| 205 SkSVGElement* parent = fParents.count() > 0 ? fParents.top() : NULL; | |
| 206 SkSVGElement* element = CreateElement(type, parent); | |
| 207 bool result = false; | |
| 208 if (parent) { | |
| 209 element->fParent = parent; | |
| 210 result = fParents.top()->onStartElement(element); | |
| 211 } else | |
| 212 *fChildren.append() = element; | |
| 213 if (strncmp(name, "svg", len) != 0) | |
| 214 *fParents.append() = element; | |
| 215 fCurrElement = element; | |
| 216 return result; | |
| 217 } | |
| 218 | |
| 219 bool SkSVGParser::onText(const char text[], int len) { | |
| 220 if (fInSVG == false) | |
| 221 return false; | |
| 222 SkSVGTypes type = fCurrElement->getType(); | |
| 223 if (type != SkSVGType_Text && type != SkSVGType_Tspan) | |
| 224 return false; | |
| 225 SkSVGText* textElement = (SkSVGText*) fCurrElement; | |
| 226 textElement->f_text.set(text, len); | |
| 227 return false; | |
| 228 } | |
| 229 | |
| 230 static int32_t strokeFillID = 0; | |
| 231 | |
| 232 void SkSVGParser::translate(SkSVGElement* element, bool isDef) { | |
| 233 SkSVGPaint::Push(&fHead, &element->fPaintState); | |
| 234 bool isFlushable = element->isFlushable(); | |
| 235 if ((element->fIsDef == false && element->fIsNotDef == false) || | |
| 236 (element->fIsDef && isDef == false && element->fIsNotDef == false) || | |
| 237 (element->fIsDef == false && isDef && element->fIsNotDef)) { | |
| 238 isFlushable = false; | |
| 239 } | |
| 240 SkSVGPaint* strokeState = NULL, * fillState = NULL; | |
| 241 if (isFlushable) | |
| 242 element->fPaintState.setSave(*this); | |
| 243 if (isFlushable && isStrokeAndFill(&strokeState, &fillState)) { | |
| 244 SkString& elementID = element->f_id; | |
| 245 if (elementID.size() == 0) { | |
| 246 elementID.set("sf"); | |
| 247 elementID.appendS32(++strokeFillID); | |
| 248 } | |
| 249 SkString saveStroke(strokeState->f_stroke); | |
| 250 SkString saveFill(fillState->f_fill); | |
| 251 strokeState->f_stroke.set("none"); | |
| 252 element->fPaintState.flush(*this, isFlushable, isDef); | |
| 253 element->translate(*this, isDef); | |
| 254 strokeState->f_stroke.set(saveStroke); | |
| 255 fillState->f_fill.set("none"); | |
| 256 if (element->fPaintState.flush(*this, isFlushable, isDef)) { | |
| 257 _startElement("add"); | |
| 258 _addAttributeLen("use", elementID.c_str(), elementID.size()); | |
| 259 _endElement(); // add | |
| 260 } | |
| 261 fillState->f_fill.set(saveFill); | |
| 262 } else { | |
| 263 element->fPaintState.flush(*this, isFlushable, isDef); | |
| 264 if (isFlushable || element->isGroup()) | |
| 265 element->translate(*this, isDef); | |
| 266 } | |
| 267 SkSVGPaint::Pop(&fHead); | |
| 268 } | |
| 269 | |
| 270 void SkSVGParser::translateMatrix(SkString& string, SkString* stringID) { | |
| 271 if (string.size() == 0) | |
| 272 return; | |
| 273 if (stringID->size() > 0) { | |
| 274 _startElement("add"); | |
| 275 _addAttribute("use", stringID->c_str()); | |
| 276 _endElement(); // add | |
| 277 return; | |
| 278 } | |
| 279 SkASSERT(strncmp(string.c_str(), "matrix", 6) == 0); | |
| 280 ++gGeneratedMatrixID; | |
| 281 _startElement("matrix"); | |
| 282 char idStr[24]; | |
| 283 strcpy(idStr, "sk_matrix"); | |
| 284 sprintf(idStr + strlen(idStr), "%d", gGeneratedMatrixID); | |
| 285 _addAttribute("id", idStr); | |
| 286 stringID->set(idStr); | |
| 287 const char* str = string.c_str(); | |
| 288 SkASSERT(strncmp(str, "matrix(", 7) == 0); | |
| 289 str += 6; | |
| 290 const char* strEnd = strrchr(str, ')'); | |
| 291 SkASSERT(strEnd != NULL); | |
| 292 SkString mat(str, strEnd - str); | |
| 293 ConvertToArray(mat); | |
| 294 const char* elems[6]; | |
| 295 static const int order[] = {0, 3, 1, 4, 2, 5}; | |
| 296 const int* orderPtr = order; | |
| 297 str = mat.c_str(); | |
| 298 strEnd = str + mat.size(); | |
| 299 while (str < strEnd) { | |
| 300 elems[*orderPtr++] = str; | |
| 301 while (str < strEnd && *str != ',' ) | |
| 302 str++; | |
| 303 str++; | |
| 304 } | |
| 305 string.reset(); | |
| 306 for (int index = 0; index < 6; index++) { | |
| 307 const char* end = strchr(elems[index], ','); | |
| 308 if (end == NULL) | |
| 309 end= strchr(elems[index], ']'); | |
| 310 string.append(elems[index], end - elems[index] + 1); | |
| 311 } | |
| 312 string.remove(string.size() - 1, 1); | |
| 313 string.append(",0,0,1]"); | |
| 314 _addAttribute("matrix", string); | |
| 315 _endElement(); // matrix | |
| 316 } | |
| 317 | |
| 318 static bool is_whitespace(char ch) { | |
| 319 return ch > 0 && ch <= ' '; | |
| 320 } | |
| 321 | |
| 322 void SkSVGParser::ConvertToArray(SkString& vals) { | |
| 323 vals.appendUnichar(']'); | |
| 324 char* valCh = (char*) vals.c_str(); | |
| 325 valCh[0] = '['; | |
| 326 int index = 1; | |
| 327 while (valCh[index] != ']') { | |
| 328 while (is_whitespace(valCh[index])) | |
| 329 index++; | |
| 330 bool foundComma = false; | |
| 331 char next; | |
| 332 do { | |
| 333 next = valCh[index++]; | |
| 334 if (next == ',') { | |
| 335 foundComma = true; | |
| 336 continue; | |
| 337 } | |
| 338 if (next == ']') { | |
| 339 index--; | |
| 340 goto undoLastComma; | |
| 341 } | |
| 342 if (next == ' ') | |
| 343 break; | |
| 344 foundComma = false; | |
| 345 } while (is_whitespace(next) == false); | |
| 346 if (foundComma == false) | |
| 347 valCh[index - 1] = ','; | |
| 348 } | |
| 349 undoLastComma: | |
| 350 while (is_whitespace(valCh[--index])) | |
| 351 ; | |
| 352 if (valCh[index] == ',') | |
| 353 valCh[index] = ' '; | |
| 354 } | |
| 355 | |
| 356 #define CASE_NEW(type) case SkSVGType_##type : created = new SkSVG##type(); brea
k | |
| 357 | |
| 358 SkSVGElement* SkSVGParser::CreateElement(SkSVGTypes type, SkSVGElement* parent)
{ | |
| 359 SkSVGElement* created = NULL; | |
| 360 switch (type) { | |
| 361 CASE_NEW(Circle); | |
| 362 CASE_NEW(ClipPath); | |
| 363 CASE_NEW(Defs); | |
| 364 CASE_NEW(Ellipse); | |
| 365 CASE_NEW(FeColorMatrix); | |
| 366 CASE_NEW(Filter); | |
| 367 CASE_NEW(G); | |
| 368 CASE_NEW(Image); | |
| 369 CASE_NEW(Line); | |
| 370 CASE_NEW(LinearGradient); | |
| 371 CASE_NEW(Mask); | |
| 372 CASE_NEW(Metadata); | |
| 373 CASE_NEW(Path); | |
| 374 CASE_NEW(Polygon); | |
| 375 CASE_NEW(Polyline); | |
| 376 CASE_NEW(RadialGradient); | |
| 377 CASE_NEW(Rect); | |
| 378 CASE_NEW(Stop); | |
| 379 CASE_NEW(SVG); | |
| 380 CASE_NEW(Symbol); | |
| 381 CASE_NEW(Text); | |
| 382 CASE_NEW(Tspan); | |
| 383 CASE_NEW(Use); | |
| 384 default: | |
| 385 SkASSERT(0); | |
| 386 return NULL; | |
| 387 } | |
| 388 created->fParent = parent; | |
| 389 bool isDef = created->fIsDef = created->isDef(); | |
| 390 bool isNotDef = created->fIsNotDef = created->isNotDef(); | |
| 391 if (isDef) { | |
| 392 SkSVGElement* up = parent; | |
| 393 while (up && up->fIsDef == false) { | |
| 394 up->fIsDef = true; | |
| 395 up = up->fParent; | |
| 396 } | |
| 397 } | |
| 398 if (isNotDef) { | |
| 399 SkSVGElement* up = parent; | |
| 400 while (up && up->fIsNotDef == false) { | |
| 401 up->fIsNotDef = true; | |
| 402 up = up->fParent; | |
| 403 } | |
| 404 } | |
| 405 return created; | |
| 406 } | |
| 407 | |
| 408 const SkSVGTypeName gSVGTypeNames[] = { | |
| 409 {"circle", SkSVGType_Circle}, | |
| 410 {"clipPath", SkSVGType_ClipPath}, | |
| 411 {"defs", SkSVGType_Defs}, | |
| 412 {"ellipse", SkSVGType_Ellipse}, | |
| 413 {"feColorMatrix", SkSVGType_FeColorMatrix}, | |
| 414 {"filter", SkSVGType_Filter}, | |
| 415 {"g", SkSVGType_G}, | |
| 416 {"image", SkSVGType_Image}, | |
| 417 {"line", SkSVGType_Line}, | |
| 418 {"linearGradient", SkSVGType_LinearGradient}, | |
| 419 {"mask", SkSVGType_Mask}, | |
| 420 {"metadata", SkSVGType_Metadata}, | |
| 421 {"path", SkSVGType_Path}, | |
| 422 {"polygon", SkSVGType_Polygon}, | |
| 423 {"polyline", SkSVGType_Polyline}, | |
| 424 {"radialGradient", SkSVGType_RadialGradient}, | |
| 425 {"rect", SkSVGType_Rect}, | |
| 426 {"stop", SkSVGType_Stop}, | |
| 427 {"svg", SkSVGType_SVG}, | |
| 428 {"symbol", SkSVGType_Symbol}, | |
| 429 {"text", SkSVGType_Text}, | |
| 430 {"tspan", SkSVGType_Tspan}, | |
| 431 {"use", SkSVGType_Use} | |
| 432 }; | |
| 433 | |
| 434 const int kSVGTypeNamesSize = SK_ARRAY_COUNT(gSVGTypeNames); | |
| 435 | |
| 436 SkSVGTypes SkSVGParser::GetType(const char match[], size_t len ) { | |
| 437 int index = SkStrSearch(&gSVGTypeNames[0].fName, kSVGTypeNamesSize, match, | |
| 438 len, sizeof(gSVGTypeNames[0])); | |
| 439 return index >= 0 && index < kSVGTypeNamesSize ? gSVGTypeNames[index].fType
: | |
| 440 (SkSVGTypes) -1; | |
| 441 } | |
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Chromium Code Reviews
Issue 884713007:
Move SVG parser files under {include,src}/svg/parser/ (Closed)
Base URL: https://chromium.googlesource.com/skia.git@master