1 /*
2 * Copyright 2016 Google Inc.
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 #include "modules/svg/include/SkSVGDOM.h"
9
10 #include "include/core/SkData.h"
11 #include "include/core/SkFontMgr.h"
12 #include "include/core/SkString.h"
13 #include "include/private/base/SkAssert.h"
14 #include "include/private/base/SkTo.h"
15 #include "modules/skshaper/include/SkShaper_factory.h"
16 #include "modules/svg/include/SkSVGAttribute.h"
17 #include "modules/svg/include/SkSVGAttributeParser.h"
18 #include "modules/svg/include/SkSVGCircle.h"
19 #include "modules/svg/include/SkSVGClipPath.h"
20 #include "modules/svg/include/SkSVGDefs.h"
21 #include "modules/svg/include/SkSVGEllipse.h"
22 #include "modules/svg/include/SkSVGFeBlend.h"
23 #include "modules/svg/include/SkSVGFeColorMatrix.h"
24 #include "modules/svg/include/SkSVGFeComponentTransfer.h"
25 #include "modules/svg/include/SkSVGFeComposite.h"
26 #include "modules/svg/include/SkSVGFeDisplacementMap.h"
27 #include "modules/svg/include/SkSVGFeFlood.h"
28 #include "modules/svg/include/SkSVGFeGaussianBlur.h"
29 #include "modules/svg/include/SkSVGFeImage.h"
30 #include "modules/svg/include/SkSVGFeLightSource.h"
31 #include "modules/svg/include/SkSVGFeLighting.h"
32 #include "modules/svg/include/SkSVGFeMerge.h"
33 #include "modules/svg/include/SkSVGFeMorphology.h"
34 #include "modules/svg/include/SkSVGFeOffset.h"
35 #include "modules/svg/include/SkSVGFeTurbulence.h"
36 #include "modules/svg/include/SkSVGFilter.h"
37 #include "modules/svg/include/SkSVGG.h"
38 #include "modules/svg/include/SkSVGImage.h"
39 #include "modules/svg/include/SkSVGLine.h"
40 #include "modules/svg/include/SkSVGLinearGradient.h"
41 #include "modules/svg/include/SkSVGMask.h"
42 #include "modules/svg/include/SkSVGNode.h"
43 #include "modules/svg/include/SkSVGPath.h"
44 #include "modules/svg/include/SkSVGPattern.h"
45 #include "modules/svg/include/SkSVGPoly.h"
46 #include "modules/svg/include/SkSVGRadialGradient.h"
47 #include "modules/svg/include/SkSVGRect.h"
48 #include "modules/svg/include/SkSVGRenderContext.h"
49 #include "modules/svg/include/SkSVGSVG.h"
50 #include "modules/svg/include/SkSVGStop.h"
51 #include "modules/svg/include/SkSVGText.h"
52 #include "modules/svg/include/SkSVGTypes.h"
53 #include "modules/svg/include/SkSVGUse.h"
54 #include "modules/svg/include/SkSVGValue.h"
55 #include "src/base/SkTSearch.h"
56 #include "src/core/SkTraceEvent.h"
57 #include "src/xml/SkDOM.h"
58
59 #include <stdint.h>
60 #include <array>
61 #include <cstring>
62 #include <tuple>
63 #include <utility>
64
65 namespace {
66
SetIRIAttribute(const sk_sp<SkSVGNode> & node,SkSVGAttribute attr,const char * stringValue)67 bool SetIRIAttribute(const sk_sp<SkSVGNode>& node, SkSVGAttribute attr,
68 const char* stringValue) {
69 auto parseResult = SkSVGAttributeParser::parse<SkSVGIRI>(stringValue);
70 if (!parseResult.isValid()) {
71 return false;
72 }
73
74 node->setAttribute(attr, SkSVGStringValue(parseResult->iri()));
75 return true;
76 }
77
SetStringAttribute(const sk_sp<SkSVGNode> & node,SkSVGAttribute attr,const char * stringValue)78 bool SetStringAttribute(const sk_sp<SkSVGNode>& node, SkSVGAttribute attr,
79 const char* stringValue) {
80 SkString str(stringValue, strlen(stringValue));
81 SkSVGStringType strType = SkSVGStringType(str);
82 node->setAttribute(attr, SkSVGStringValue(strType));
83 return true;
84 }
85
SetTransformAttribute(const sk_sp<SkSVGNode> & node,SkSVGAttribute attr,const char * stringValue)86 bool SetTransformAttribute(const sk_sp<SkSVGNode>& node, SkSVGAttribute attr,
87 const char* stringValue) {
88 auto parseResult = SkSVGAttributeParser::parse<SkSVGTransformType>(stringValue);
89 if (!parseResult.isValid()) {
90 return false;
91 }
92
93 node->setAttribute(attr, SkSVGTransformValue(*parseResult));
94 return true;
95 }
96
SetLengthAttribute(const sk_sp<SkSVGNode> & node,SkSVGAttribute attr,const char * stringValue)97 bool SetLengthAttribute(const sk_sp<SkSVGNode>& node, SkSVGAttribute attr,
98 const char* stringValue) {
99 auto parseResult = SkSVGAttributeParser::parse<SkSVGLength>(stringValue);
100 if (!parseResult.isValid()) {
101 return false;
102 }
103
104 node->setAttribute(attr, SkSVGLengthValue(*parseResult));
105 return true;
106 }
107
SetViewBoxAttribute(const sk_sp<SkSVGNode> & node,SkSVGAttribute attr,const char * stringValue)108 bool SetViewBoxAttribute(const sk_sp<SkSVGNode>& node, SkSVGAttribute attr,
109 const char* stringValue) {
110 SkSVGViewBoxType viewBox;
111 SkSVGAttributeParser parser(stringValue);
112 if (!parser.parseViewBox(&viewBox)) {
113 return false;
114 }
115
116 node->setAttribute(attr, SkSVGViewBoxValue(viewBox));
117 return true;
118 }
119
SetObjectBoundingBoxUnitsAttribute(const sk_sp<SkSVGNode> & node,SkSVGAttribute attr,const char * stringValue)120 bool SetObjectBoundingBoxUnitsAttribute(const sk_sp<SkSVGNode>& node,
121 SkSVGAttribute attr,
122 const char* stringValue) {
123 auto parseResult = SkSVGAttributeParser::parse<SkSVGObjectBoundingBoxUnits>(stringValue);
124 if (!parseResult.isValid()) {
125 return false;
126 }
127
128 node->setAttribute(attr, SkSVGObjectBoundingBoxUnitsValue(*parseResult));
129 return true;
130 }
131
SetPreserveAspectRatioAttribute(const sk_sp<SkSVGNode> & node,SkSVGAttribute attr,const char * stringValue)132 bool SetPreserveAspectRatioAttribute(const sk_sp<SkSVGNode>& node, SkSVGAttribute attr,
133 const char* stringValue) {
134 SkSVGPreserveAspectRatio par;
135 SkSVGAttributeParser parser(stringValue);
136 if (!parser.parsePreserveAspectRatio(&par)) {
137 return false;
138 }
139
140 node->setAttribute(attr, SkSVGPreserveAspectRatioValue(par));
141 return true;
142 }
143
TrimmedString(const char * first,const char * last)144 SkString TrimmedString(const char* first, const char* last) {
145 SkASSERT(first);
146 SkASSERT(last);
147 SkASSERT(first <= last);
148
149 while (first <= last && *first <= ' ') { first++; }
150 while (first <= last && *last <= ' ') { last--; }
151
152 SkASSERT(last - first + 1 >= 0);
153 return SkString(first, SkTo<size_t>(last - first + 1));
154 }
155
156 // Breaks a "foo: bar; baz: ..." string into key:value pairs.
157 class StyleIterator {
158 public:
StyleIterator(const char * str)159 StyleIterator(const char* str) : fPos(str) { }
160
next()161 std::tuple<SkString, SkString> next() {
162 SkString name, value;
163
164 if (fPos) {
165 const char* sep = this->nextSeparator();
166 SkASSERT(*sep == ';' || *sep == '\0');
167
168 const char* valueSep = strchr(fPos, ':');
169 if (valueSep && valueSep < sep) {
170 name = TrimmedString(fPos, valueSep - 1);
171 value = TrimmedString(valueSep + 1, sep - 1);
172 }
173
174 fPos = *sep ? sep + 1 : nullptr;
175 }
176
177 return std::make_tuple(name, value);
178 }
179
180 private:
nextSeparator() const181 const char* nextSeparator() const {
182 const char* sep = fPos;
183 while (*sep != ';' && *sep != '\0') {
184 sep++;
185 }
186 return sep;
187 }
188
189 const char* fPos;
190 };
191
192 bool set_string_attribute(const sk_sp<SkSVGNode>& node, const char* name, const char* value);
193
SetStyleAttributes(const sk_sp<SkSVGNode> & node,SkSVGAttribute,const char * stringValue)194 bool SetStyleAttributes(const sk_sp<SkSVGNode>& node, SkSVGAttribute,
195 const char* stringValue) {
196
197 SkString name, value;
198 StyleIterator iter(stringValue);
199 for (;;) {
200 std::tie(name, value) = iter.next();
201 if (name.isEmpty()) {
202 break;
203 }
204 set_string_attribute(node, name.c_str(), value.c_str());
205 }
206
207 return true;
208 }
209
210 template<typename T>
211 struct SortedDictionaryEntry {
212 const char* fKey;
213 const T fValue;
214 };
215
216 struct AttrParseInfo {
217 SkSVGAttribute fAttr;
218 bool (*fSetter)(const sk_sp<SkSVGNode>& node, SkSVGAttribute attr, const char* stringValue);
219 };
220
221 SortedDictionaryEntry<AttrParseInfo> gAttributeParseInfo[] = {
222 { "cx" , { SkSVGAttribute::kCx , SetLengthAttribute }},
223 { "cy" , { SkSVGAttribute::kCy , SetLengthAttribute }},
224 { "filterUnits" , { SkSVGAttribute::kFilterUnits ,
225 SetObjectBoundingBoxUnitsAttribute }},
226 // focal point x & y
227 { "fx" , { SkSVGAttribute::kFx , SetLengthAttribute }},
228 { "fy" , { SkSVGAttribute::kFy , SetLengthAttribute }},
229 { "height" , { SkSVGAttribute::kHeight , SetLengthAttribute }},
230 { "preserveAspectRatio", { SkSVGAttribute::kPreserveAspectRatio,
231 SetPreserveAspectRatioAttribute }},
232 { "r" , { SkSVGAttribute::kR , SetLengthAttribute }},
233 { "rx" , { SkSVGAttribute::kRx , SetLengthAttribute }},
234 { "ry" , { SkSVGAttribute::kRy , SetLengthAttribute }},
235 { "style" , { SkSVGAttribute::kUnknown , SetStyleAttributes }},
236 { "text" , { SkSVGAttribute::kText , SetStringAttribute }},
237 { "transform" , { SkSVGAttribute::kTransform , SetTransformAttribute }},
238 { "viewBox" , { SkSVGAttribute::kViewBox , SetViewBoxAttribute }},
239 { "width" , { SkSVGAttribute::kWidth , SetLengthAttribute }},
240 { "x" , { SkSVGAttribute::kX , SetLengthAttribute }},
241 { "x1" , { SkSVGAttribute::kX1 , SetLengthAttribute }},
242 { "x2" , { SkSVGAttribute::kX2 , SetLengthAttribute }},
243 { "xlink:href" , { SkSVGAttribute::kHref , SetIRIAttribute }},
244 { "y" , { SkSVGAttribute::kY , SetLengthAttribute }},
245 { "y1" , { SkSVGAttribute::kY1 , SetLengthAttribute }},
246 { "y2" , { SkSVGAttribute::kY2 , SetLengthAttribute }},
247 };
248
249 SortedDictionaryEntry<sk_sp<SkSVGNode>(*)()> gTagFactories[] = {
__anonfb798c1b0202() 250 { "a" , []() -> sk_sp<SkSVGNode> { return SkSVGG::Make(); }},
__anonfb798c1b0302() 251 { "circle" , []() -> sk_sp<SkSVGNode> { return SkSVGCircle::Make(); }},
__anonfb798c1b0402() 252 { "clipPath" , []() -> sk_sp<SkSVGNode> { return SkSVGClipPath::Make(); }},
__anonfb798c1b0502() 253 { "defs" , []() -> sk_sp<SkSVGNode> { return SkSVGDefs::Make(); }},
__anonfb798c1b0602() 254 { "ellipse" , []() -> sk_sp<SkSVGNode> { return SkSVGEllipse::Make(); }},
__anonfb798c1b0702() 255 { "feBlend" , []() -> sk_sp<SkSVGNode> { return SkSVGFeBlend::Make(); }},
__anonfb798c1b0802() 256 { "feColorMatrix" , []() -> sk_sp<SkSVGNode> { return SkSVGFeColorMatrix::Make(); }},
__anonfb798c1b0902() 257 { "feComponentTransfer", []() -> sk_sp<SkSVGNode> { return SkSVGFeComponentTransfer::Make(); }},
__anonfb798c1b0a02() 258 { "feComposite" , []() -> sk_sp<SkSVGNode> { return SkSVGFeComposite::Make(); }},
__anonfb798c1b0b02() 259 { "feDiffuseLighting" , []() -> sk_sp<SkSVGNode> { return SkSVGFeDiffuseLighting::Make(); }},
__anonfb798c1b0c02() 260 { "feDisplacementMap" , []() -> sk_sp<SkSVGNode> { return SkSVGFeDisplacementMap::Make(); }},
__anonfb798c1b0d02() 261 { "feDistantLight" , []() -> sk_sp<SkSVGNode> { return SkSVGFeDistantLight::Make(); }},
__anonfb798c1b0e02() 262 { "feFlood" , []() -> sk_sp<SkSVGNode> { return SkSVGFeFlood::Make(); }},
__anonfb798c1b0f02() 263 { "feFuncA" , []() -> sk_sp<SkSVGNode> { return SkSVGFeFunc::MakeFuncA(); }},
__anonfb798c1b1002() 264 { "feFuncB" , []() -> sk_sp<SkSVGNode> { return SkSVGFeFunc::MakeFuncB(); }},
__anonfb798c1b1102() 265 { "feFuncG" , []() -> sk_sp<SkSVGNode> { return SkSVGFeFunc::MakeFuncG(); }},
__anonfb798c1b1202() 266 { "feFuncR" , []() -> sk_sp<SkSVGNode> { return SkSVGFeFunc::MakeFuncR(); }},
__anonfb798c1b1302() 267 { "feGaussianBlur" , []() -> sk_sp<SkSVGNode> { return SkSVGFeGaussianBlur::Make(); }},
__anonfb798c1b1402() 268 { "feImage" , []() -> sk_sp<SkSVGNode> { return SkSVGFeImage::Make(); }},
__anonfb798c1b1502() 269 { "feMerge" , []() -> sk_sp<SkSVGNode> { return SkSVGFeMerge::Make(); }},
__anonfb798c1b1602() 270 { "feMergeNode" , []() -> sk_sp<SkSVGNode> { return SkSVGFeMergeNode::Make(); }},
__anonfb798c1b1702() 271 { "feMorphology" , []() -> sk_sp<SkSVGNode> { return SkSVGFeMorphology::Make(); }},
__anonfb798c1b1802() 272 { "feOffset" , []() -> sk_sp<SkSVGNode> { return SkSVGFeOffset::Make(); }},
__anonfb798c1b1902() 273 { "fePointLight" , []() -> sk_sp<SkSVGNode> { return SkSVGFePointLight::Make(); }},
__anonfb798c1b1a02() 274 { "feSpecularLighting" , []() -> sk_sp<SkSVGNode> { return SkSVGFeSpecularLighting::Make(); }},
__anonfb798c1b1b02() 275 { "feSpotLight" , []() -> sk_sp<SkSVGNode> { return SkSVGFeSpotLight::Make(); }},
__anonfb798c1b1c02() 276 { "feTurbulence" , []() -> sk_sp<SkSVGNode> { return SkSVGFeTurbulence::Make(); }},
__anonfb798c1b1d02() 277 { "filter" , []() -> sk_sp<SkSVGNode> { return SkSVGFilter::Make(); }},
__anonfb798c1b1e02() 278 { "g" , []() -> sk_sp<SkSVGNode> { return SkSVGG::Make(); }},
__anonfb798c1b1f02() 279 { "image" , []() -> sk_sp<SkSVGNode> { return SkSVGImage::Make(); }},
__anonfb798c1b2002() 280 { "line" , []() -> sk_sp<SkSVGNode> { return SkSVGLine::Make(); }},
__anonfb798c1b2102() 281 { "linearGradient" , []() -> sk_sp<SkSVGNode> { return SkSVGLinearGradient::Make(); }},
__anonfb798c1b2202() 282 { "mask" , []() -> sk_sp<SkSVGNode> { return SkSVGMask::Make(); }},
__anonfb798c1b2302() 283 { "path" , []() -> sk_sp<SkSVGNode> { return SkSVGPath::Make(); }},
__anonfb798c1b2402() 284 { "pattern" , []() -> sk_sp<SkSVGNode> { return SkSVGPattern::Make(); }},
__anonfb798c1b2502() 285 { "polygon" , []() -> sk_sp<SkSVGNode> { return SkSVGPoly::MakePolygon(); }},
__anonfb798c1b2602() 286 { "polyline" , []() -> sk_sp<SkSVGNode> { return SkSVGPoly::MakePolyline(); }},
__anonfb798c1b2702() 287 { "radialGradient" , []() -> sk_sp<SkSVGNode> { return SkSVGRadialGradient::Make(); }},
__anonfb798c1b2802() 288 { "rect" , []() -> sk_sp<SkSVGNode> { return SkSVGRect::Make(); }},
__anonfb798c1b2902() 289 { "stop" , []() -> sk_sp<SkSVGNode> { return SkSVGStop::Make(); }},
290 // "svg" handled explicitly
__anonfb798c1b2a02() 291 { "text" , []() -> sk_sp<SkSVGNode> { return SkSVGText::Make(); }},
__anonfb798c1b2b02() 292 { "textPath" , []() -> sk_sp<SkSVGNode> { return SkSVGTextPath::Make(); }},
__anonfb798c1b2c02() 293 { "tspan" , []() -> sk_sp<SkSVGNode> { return SkSVGTSpan::Make(); }},
__anonfb798c1b2d02() 294 { "use" , []() -> sk_sp<SkSVGNode> { return SkSVGUse::Make(); }},
295 };
296
297 struct ConstructionContext {
ConstructionContext__anonfb798c1b0111::ConstructionContext298 ConstructionContext(SkSVGIDMapper* mapper) : fParent(nullptr), fIDMapper(mapper) {}
ConstructionContext__anonfb798c1b0111::ConstructionContext299 ConstructionContext(const ConstructionContext& other, const sk_sp<SkSVGNode>& newParent)
300 : fParent(newParent.get()), fIDMapper(other.fIDMapper) {}
301
302 SkSVGNode* fParent;
303 SkSVGIDMapper* fIDMapper;
304 };
305
set_string_attribute(const sk_sp<SkSVGNode> & node,const char * name,const char * value)306 bool set_string_attribute(const sk_sp<SkSVGNode>& node, const char* name, const char* value) {
307 if (node->parseAndSetAttribute(name, value)) {
308 // Handled by new code path
309 return true;
310 }
311
312 const int attrIndex = SkStrSearch(&gAttributeParseInfo[0].fKey,
313 SkTo<int>(std::size(gAttributeParseInfo)),
314 name, sizeof(gAttributeParseInfo[0]));
315 if (attrIndex < 0) {
316 #if defined(SK_VERBOSE_SVG_PARSING)
317 SkDebugf("unhandled attribute: %s\n", name);
318 #endif
319 return false;
320 }
321
322 SkASSERT(SkTo<size_t>(attrIndex) < std::size(gAttributeParseInfo));
323 const auto& attrInfo = gAttributeParseInfo[attrIndex].fValue;
324 if (!attrInfo.fSetter(node, attrInfo.fAttr, value)) {
325 #if defined(SK_VERBOSE_SVG_PARSING)
326 SkDebugf("could not parse attribute: '%s=\"%s\"'\n", name, value);
327 #endif
328 return false;
329 }
330
331 return true;
332 }
333
parse_node_attributes(const SkDOM & xmlDom,const SkDOM::Node * xmlNode,const sk_sp<SkSVGNode> & svgNode,SkSVGIDMapper * mapper)334 void parse_node_attributes(const SkDOM& xmlDom, const SkDOM::Node* xmlNode,
335 const sk_sp<SkSVGNode>& svgNode, SkSVGIDMapper* mapper) {
336 const char* name, *value;
337 SkDOM::AttrIter attrIter(xmlDom, xmlNode);
338 while ((name = attrIter.next(&value))) {
339 // We're handling id attributes out of band for now.
340 if (!strcmp(name, "id")) {
341 mapper->set(SkString(value), svgNode);
342 continue;
343 }
344 set_string_attribute(svgNode, name, value);
345 }
346 }
347
construct_svg_node(const SkDOM & dom,const ConstructionContext & ctx,const SkDOM::Node * xmlNode)348 sk_sp<SkSVGNode> construct_svg_node(const SkDOM& dom, const ConstructionContext& ctx,
349 const SkDOM::Node* xmlNode) {
350 const char* elem = dom.getName(xmlNode);
351 const SkDOM::Type elemType = dom.getType(xmlNode);
352
353 if (elemType == SkDOM::kText_Type) {
354 // Text literals require special handling.
355 SkASSERT(dom.countChildren(xmlNode) == 0);
356 auto txt = SkSVGTextLiteral::Make();
357 txt->setText(SkString(dom.getName(xmlNode)));
358 ctx.fParent->appendChild(std::move(txt));
359
360 return nullptr;
361 }
362
363 SkASSERT(elemType == SkDOM::kElement_Type);
364
365 auto make_node = [](const ConstructionContext& ctx, const char* elem) -> sk_sp<SkSVGNode> {
366 if (strcmp(elem, "svg") == 0) {
367 // Outermost SVG element must be tagged as such.
368 return SkSVGSVG::Make(ctx.fParent ? SkSVGSVG::Type::kInner
369 : SkSVGSVG::Type::kRoot);
370 }
371
372 const int tagIndex = SkStrSearch(&gTagFactories[0].fKey,
373 SkTo<int>(std::size(gTagFactories)),
374 elem, sizeof(gTagFactories[0]));
375 if (tagIndex < 0) {
376 #if defined(SK_VERBOSE_SVG_PARSING)
377 SkDebugf("unhandled element: <%s>\n", elem);
378 #endif
379 return nullptr;
380 }
381 SkASSERT(SkTo<size_t>(tagIndex) < std::size(gTagFactories));
382
383 return gTagFactories[tagIndex].fValue();
384 };
385
386 auto node = make_node(ctx, elem);
387 if (!node) {
388 return nullptr;
389 }
390
391 parse_node_attributes(dom, xmlNode, node, ctx.fIDMapper);
392
393 ConstructionContext localCtx(ctx, node);
394 for (auto* child = dom.getFirstChild(xmlNode, nullptr); child;
395 child = dom.getNextSibling(child)) {
396 sk_sp<SkSVGNode> childNode = construct_svg_node(dom, localCtx, child);
397 if (childNode) {
398 node->appendChild(std::move(childNode));
399 }
400 }
401
402 return node;
403 }
404
405 } // anonymous namespace
406
setFontManager(sk_sp<SkFontMgr> fmgr)407 SkSVGDOM::Builder& SkSVGDOM::Builder::setFontManager(sk_sp<SkFontMgr> fmgr) {
408 fFontMgr = std::move(fmgr);
409 return *this;
410 }
411
setResourceProvider(sk_sp<skresources::ResourceProvider> rp)412 SkSVGDOM::Builder& SkSVGDOM::Builder::setResourceProvider(sk_sp<skresources::ResourceProvider> rp) {
413 fResourceProvider = std::move(rp);
414 return *this;
415 }
416
setTextShapingFactory(sk_sp<SkShapers::Factory> f)417 SkSVGDOM::Builder& SkSVGDOM::Builder::setTextShapingFactory(sk_sp<SkShapers::Factory> f) {
418 fTextShapingFactory = f;
419 return *this;
420 }
421
make(SkStream & str) const422 sk_sp<SkSVGDOM> SkSVGDOM::Builder::make(SkStream& str) const {
423 TRACE_EVENT0("skia", TRACE_FUNC);
424 SkDOM xmlDom;
425 if (!xmlDom.build(str)) {
426 return nullptr;
427 }
428
429 SkSVGIDMapper mapper;
430 ConstructionContext ctx(&mapper);
431
432 auto root = construct_svg_node(xmlDom, ctx, xmlDom.getRootNode());
433 if (!root || root->tag() != SkSVGTag::kSvg) {
434 return nullptr;
435 }
436
437 class NullResourceProvider final : public skresources::ResourceProvider {
438 sk_sp<SkData> load(const char[], const char[]) const override { return nullptr; }
439 };
440
441 auto resource_provider = fResourceProvider ? fResourceProvider
442 : sk_make_sp<NullResourceProvider>();
443
444 auto factory = fTextShapingFactory ? fTextShapingFactory : SkShapers::Primitive::Factory();
445
446 return sk_sp<SkSVGDOM>(new SkSVGDOM(sk_sp<SkSVGSVG>(static_cast<SkSVGSVG*>(root.release())),
447 std::move(fFontMgr),
448 std::move(resource_provider),
449 std::move(mapper),
450 std::move(factory)));
451 }
452
SkSVGDOM(sk_sp<SkSVGSVG> root,sk_sp<SkFontMgr> fmgr,sk_sp<skresources::ResourceProvider> rp,SkSVGIDMapper && mapper,sk_sp<SkShapers::Factory> fact)453 SkSVGDOM::SkSVGDOM(sk_sp<SkSVGSVG> root,
454 sk_sp<SkFontMgr> fmgr,
455 sk_sp<skresources::ResourceProvider> rp,
456 SkSVGIDMapper&& mapper,
457 sk_sp<SkShapers::Factory> fact)
458 : fRoot(std::move(root))
459 , fFontMgr(std::move(fmgr))
460 , fTextShapingFactory(std::move(fact))
461 , fResourceProvider(std::move(rp))
462 , fIDMapper(std::move(mapper))
463 , fContainerSize(fRoot->intrinsicSize(SkSVGLengthContext(SkSize::Make(0, 0)))) {
464 SkASSERT(fResourceProvider);
465 SkASSERT(fTextShapingFactory);
466 }
467
render(SkCanvas * canvas) const468 void SkSVGDOM::render(SkCanvas* canvas) const {
469 TRACE_EVENT0("skia", TRACE_FUNC);
470 if (fRoot) {
471 SkSVGLengthContext lctx(fContainerSize);
472 SkSVGPresentationContext pctx;
473 fRoot->render(SkSVGRenderContext(canvas,
474 fFontMgr,
475 fResourceProvider,
476 fIDMapper,
477 lctx,
478 pctx,
479 {nullptr, nullptr},
480 fTextShapingFactory));
481 }
482 }
483
renderNode(SkCanvas * canvas,SkSVGPresentationContext & pctx,const char * id) const484 void SkSVGDOM::renderNode(SkCanvas* canvas, SkSVGPresentationContext& pctx, const char* id) const {
485 TRACE_EVENT0("skia", TRACE_FUNC);
486
487 if (fRoot) {
488 SkSVGLengthContext lctx(fContainerSize);
489 fRoot->renderNode(SkSVGRenderContext(canvas,
490 fFontMgr,
491 fResourceProvider,
492 fIDMapper,
493 lctx,
494 pctx,
495 {nullptr, nullptr},
496 fTextShapingFactory),
497 SkSVGIRI(SkSVGIRI::Type::kLocal, SkSVGStringType(id)));
498 }
499 }
500
containerSize() const501 const SkSize& SkSVGDOM::containerSize() const {
502 return fContainerSize;
503 }
504
setContainerSize(const SkSize & containerSize)505 void SkSVGDOM::setContainerSize(const SkSize& containerSize) {
506 // TODO: inval
507 fContainerSize = containerSize;
508 }
509
findNodeById(const char * id)510 sk_sp<SkSVGNode>* SkSVGDOM::findNodeById(const char* id) {
511 SkString idStr(id);
512 return this->fIDMapper.find(idStr);
513 }
514
515 // TODO(fuego): move this to SkSVGNode or its own CU.
setAttribute(const char * attributeName,const char * attributeValue)516 bool SkSVGNode::setAttribute(const char* attributeName, const char* attributeValue) {
517 return set_string_attribute(sk_ref_sp(this), attributeName, attributeValue);
518 }
519