1/*
2 * Copyright (C) 2004, 2005, 2007, 2009 Apple Inc. All rights reserved.
3 *           (C) 2005 Rob Buis <buis@kde.org>
4 *           (C) 2006 Alexander Kellett <lypanov@kde.org>
5 * Copyright (C) Research In Motion Limited 2010. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
20 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
21 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
24 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include "config.h"
30
31#include "core/rendering/svg/SVGRenderTreeAsText.h"
32
33#include "core/rendering/InlineTextBox.h"
34#include "core/rendering/RenderTreeAsText.h"
35#include "core/rendering/svg/RenderSVGGradientStop.h"
36#include "core/rendering/svg/RenderSVGImage.h"
37#include "core/rendering/svg/RenderSVGInlineText.h"
38#include "core/rendering/svg/RenderSVGResourceClipper.h"
39#include "core/rendering/svg/RenderSVGResourceFilter.h"
40#include "core/rendering/svg/RenderSVGResourceLinearGradient.h"
41#include "core/rendering/svg/RenderSVGResourceMarker.h"
42#include "core/rendering/svg/RenderSVGResourceMasker.h"
43#include "core/rendering/svg/RenderSVGResourcePattern.h"
44#include "core/rendering/svg/RenderSVGResourceRadialGradient.h"
45#include "core/rendering/svg/RenderSVGResourceSolidColor.h"
46#include "core/rendering/svg/RenderSVGRoot.h"
47#include "core/rendering/svg/RenderSVGShape.h"
48#include "core/rendering/svg/RenderSVGText.h"
49#include "core/rendering/svg/SVGInlineTextBox.h"
50#include "core/rendering/svg/SVGRootInlineBox.h"
51#include "core/svg/LinearGradientAttributes.h"
52#include "core/svg/PatternAttributes.h"
53#include "core/svg/RadialGradientAttributes.h"
54#include "core/svg/SVGCircleElement.h"
55#include "core/svg/SVGEllipseElement.h"
56#include "core/svg/SVGLineElement.h"
57#include "core/svg/SVGLinearGradientElement.h"
58#include "core/svg/SVGPathElement.h"
59#include "core/svg/SVGPathUtilities.h"
60#include "core/svg/SVGPatternElement.h"
61#include "core/svg/SVGPointList.h"
62#include "core/svg/SVGPolyElement.h"
63#include "core/svg/SVGRadialGradientElement.h"
64#include "core/svg/SVGRectElement.h"
65#include "core/svg/SVGStopElement.h"
66#include "platform/graphics/DashArray.h"
67#include "platform/graphics/GraphicsTypes.h"
68
69#include <math.h>
70#include <memory>
71
72namespace WebCore {
73
74/** class + iomanip to help streaming list separators, i.e. ", " in string "a, b, c, d"
75 * Can be used in cases where you don't know which item in the list is the first
76 * one to be printed, but still want to avoid strings like ", b, c".
77 */
78class TextStreamSeparator {
79public:
80    TextStreamSeparator(const String& s)
81        : m_separator(s)
82        , m_needToSeparate(false)
83    {
84    }
85
86private:
87    friend TextStream& operator<<(TextStream&, TextStreamSeparator&);
88
89    String m_separator;
90    bool m_needToSeparate;
91};
92
93TextStream& operator<<(TextStream& ts, TextStreamSeparator& sep)
94{
95    if (sep.m_needToSeparate)
96        ts << sep.m_separator;
97    else
98        sep.m_needToSeparate = true;
99    return ts;
100}
101
102template<typename ValueType>
103static void writeNameValuePair(TextStream& ts, const char* name, ValueType value)
104{
105    ts << " [" << name << "=" << value << "]";
106}
107
108template<typename ValueType>
109static void writeNameAndQuotedValue(TextStream& ts, const char* name, ValueType value)
110{
111    ts << " [" << name << "=\"" << value << "\"]";
112}
113
114static void writeIfNotEmpty(TextStream& ts, const char* name, const String& value)
115{
116    if (!value.isEmpty())
117        writeNameValuePair(ts, name, value);
118}
119
120template<typename ValueType>
121static void writeIfNotDefault(TextStream& ts, const char* name, ValueType value, ValueType defaultValue)
122{
123    if (value != defaultValue)
124        writeNameValuePair(ts, name, value);
125}
126
127TextStream& operator<<(TextStream& ts, const AffineTransform& transform)
128{
129    if (transform.isIdentity())
130        ts << "identity";
131    else
132        ts << "{m=(("
133           << transform.a() << "," << transform.b()
134           << ")("
135           << transform.c() << "," << transform.d()
136           << ")) t=("
137           << transform.e() << "," << transform.f()
138           << ")}";
139
140    return ts;
141}
142
143static TextStream& operator<<(TextStream& ts, const WindRule rule)
144{
145    switch (rule) {
146    case RULE_NONZERO:
147        ts << "NON-ZERO";
148        break;
149    case RULE_EVENODD:
150        ts << "EVEN-ODD";
151        break;
152    }
153
154    return ts;
155}
156
157namespace {
158
159template<typename Enum>
160String SVGEnumerationToString(Enum value)
161{
162    const SVGEnumerationStringEntries& entries = getStaticStringEntries<Enum>();
163
164    SVGEnumerationStringEntries::const_iterator it = entries.begin();
165    SVGEnumerationStringEntries::const_iterator itEnd = entries.end();
166    for (; it != itEnd; ++it) {
167        if (value == it->first)
168            return it->second;
169    }
170
171    ASSERT_NOT_REACHED();
172    return String();
173}
174
175}
176
177static TextStream& operator<<(TextStream& ts, const SVGUnitTypes::SVGUnitType& unitType)
178{
179    ts << SVGEnumerationToString<SVGUnitTypes::SVGUnitType>(unitType);
180    return ts;
181}
182
183static TextStream& operator<<(TextStream& ts, const SVGMarkerUnitsType& markerUnit)
184{
185    ts << SVGEnumerationToString<SVGMarkerUnitsType>(markerUnit);
186    return ts;
187}
188
189TextStream& operator<<(TextStream& ts, const Color& c)
190{
191    return ts << c.nameForRenderTreeAsText();
192}
193
194// FIXME: Maybe this should be in KCanvasRenderingStyle.cpp
195static TextStream& operator<<(TextStream& ts, const DashArray& a)
196{
197    ts << "{";
198    DashArray::const_iterator end = a.end();
199    for (DashArray::const_iterator it = a.begin(); it != end; ++it) {
200        if (it != a.begin())
201            ts << ", ";
202        ts << *it;
203    }
204    ts << "}";
205    return ts;
206}
207
208// FIXME: Maybe this should be in GraphicsTypes.cpp
209static TextStream& operator<<(TextStream& ts, LineCap style)
210{
211    switch (style) {
212    case ButtCap:
213        ts << "BUTT";
214        break;
215    case RoundCap:
216        ts << "ROUND";
217        break;
218    case SquareCap:
219        ts << "SQUARE";
220        break;
221    }
222    return ts;
223}
224
225// FIXME: Maybe this should be in GraphicsTypes.cpp
226static TextStream& operator<<(TextStream& ts, LineJoin style)
227{
228    switch (style) {
229    case MiterJoin:
230        ts << "MITER";
231        break;
232    case RoundJoin:
233        ts << "ROUND";
234        break;
235    case BevelJoin:
236        ts << "BEVEL";
237        break;
238    }
239    return ts;
240}
241
242static TextStream& operator<<(TextStream& ts, const SVGSpreadMethodType& type)
243{
244    ts << SVGEnumerationToString<SVGSpreadMethodType>(type).upper();
245    return ts;
246}
247
248static void writeSVGPaintingResource(TextStream& ts, RenderSVGResource* resource)
249{
250    if (resource->resourceType() == SolidColorResourceType) {
251        ts << "[type=SOLID] [color=" << static_cast<RenderSVGResourceSolidColor*>(resource)->color() << "]";
252        return;
253    }
254
255    // All other resources derive from RenderSVGResourceContainer
256    RenderSVGResourceContainer* container = static_cast<RenderSVGResourceContainer*>(resource);
257    SVGElement* element = container->element();
258    ASSERT(element);
259
260    if (resource->resourceType() == PatternResourceType)
261        ts << "[type=PATTERN]";
262    else if (resource->resourceType() == LinearGradientResourceType)
263        ts << "[type=LINEAR-GRADIENT]";
264    else if (resource->resourceType() == RadialGradientResourceType)
265        ts << "[type=RADIAL-GRADIENT]";
266
267    ts << " [id=\"" << element->getIdAttribute() << "\"]";
268}
269
270static void writeStyle(TextStream& ts, const RenderObject& object)
271{
272    const RenderStyle* style = object.style();
273    const SVGRenderStyle* svgStyle = style->svgStyle();
274
275    if (!object.localTransform().isIdentity())
276        writeNameValuePair(ts, "transform", object.localTransform());
277    writeIfNotDefault(ts, "image rendering", style->imageRendering(), RenderStyle::initialImageRendering());
278    writeIfNotDefault(ts, "opacity", style->opacity(), RenderStyle::initialOpacity());
279    if (object.isSVGShape()) {
280        const RenderSVGShape& shape = static_cast<const RenderSVGShape&>(object);
281        ASSERT(shape.element());
282
283        bool hasFallback;
284        if (RenderSVGResource* strokePaintingResource = RenderSVGResource::strokePaintingResource(const_cast<RenderSVGShape*>(&shape), shape.style(), hasFallback)) {
285            TextStreamSeparator s(" ");
286            ts << " [stroke={" << s;
287            writeSVGPaintingResource(ts, strokePaintingResource);
288
289            SVGLengthContext lengthContext(shape.element());
290            double dashOffset = svgStyle->strokeDashOffset()->value(lengthContext);
291            double strokeWidth = svgStyle->strokeWidth()->value(lengthContext);
292            RefPtr<SVGLengthList> dashes = svgStyle->strokeDashArray();
293
294            DashArray dashArray;
295            SVGLengthList::ConstIterator it = dashes->begin();
296            SVGLengthList::ConstIterator itEnd = dashes->end();
297            for (; it != itEnd; ++it)
298                dashArray.append(it->value(lengthContext));
299
300            writeIfNotDefault(ts, "opacity", svgStyle->strokeOpacity(), 1.0f);
301            writeIfNotDefault(ts, "stroke width", strokeWidth, 1.0);
302            writeIfNotDefault(ts, "miter limit", svgStyle->strokeMiterLimit(), 4.0f);
303            writeIfNotDefault(ts, "line cap", svgStyle->capStyle(), ButtCap);
304            writeIfNotDefault(ts, "line join", svgStyle->joinStyle(), MiterJoin);
305            writeIfNotDefault(ts, "dash offset", dashOffset, 0.0);
306            if (!dashArray.isEmpty())
307                writeNameValuePair(ts, "dash array", dashArray);
308
309            ts << "}]";
310        }
311
312        if (RenderSVGResource* fillPaintingResource = RenderSVGResource::fillPaintingResource(const_cast<RenderSVGShape*>(&shape), shape.style(), hasFallback)) {
313            TextStreamSeparator s(" ");
314            ts << " [fill={" << s;
315            writeSVGPaintingResource(ts, fillPaintingResource);
316
317            writeIfNotDefault(ts, "opacity", svgStyle->fillOpacity(), 1.0f);
318            writeIfNotDefault(ts, "fill rule", svgStyle->fillRule(), RULE_NONZERO);
319            ts << "}]";
320        }
321        writeIfNotDefault(ts, "clip rule", svgStyle->clipRule(), RULE_NONZERO);
322    }
323
324    writeIfNotEmpty(ts, "start marker", svgStyle->markerStartResource());
325    writeIfNotEmpty(ts, "middle marker", svgStyle->markerMidResource());
326    writeIfNotEmpty(ts, "end marker", svgStyle->markerEndResource());
327}
328
329static TextStream& writePositionAndStyle(TextStream& ts, const RenderObject& object)
330{
331    ts << " " << enclosingIntRect(const_cast<RenderObject&>(object).absoluteClippedOverflowRect());
332    writeStyle(ts, object);
333    return ts;
334}
335
336static TextStream& operator<<(TextStream& ts, const RenderSVGShape& shape)
337{
338    writePositionAndStyle(ts, shape);
339
340    SVGElement* svgElement = shape.element();
341    ASSERT(svgElement);
342    SVGLengthContext lengthContext(svgElement);
343
344    if (isSVGRectElement(*svgElement)) {
345        SVGRectElement& element = toSVGRectElement(*svgElement);
346        writeNameValuePair(ts, "x", element.x()->currentValue()->value(lengthContext));
347        writeNameValuePair(ts, "y", element.y()->currentValue()->value(lengthContext));
348        writeNameValuePair(ts, "width", element.width()->currentValue()->value(lengthContext));
349        writeNameValuePair(ts, "height", element.height()->currentValue()->value(lengthContext));
350    } else if (isSVGLineElement(*svgElement)) {
351        SVGLineElement& element = toSVGLineElement(*svgElement);
352        writeNameValuePair(ts, "x1", element.x1()->currentValue()->value(lengthContext));
353        writeNameValuePair(ts, "y1", element.y1()->currentValue()->value(lengthContext));
354        writeNameValuePair(ts, "x2", element.x2()->currentValue()->value(lengthContext));
355        writeNameValuePair(ts, "y2", element.y2()->currentValue()->value(lengthContext));
356    } else if (isSVGEllipseElement(*svgElement)) {
357        SVGEllipseElement& element = toSVGEllipseElement(*svgElement);
358        writeNameValuePair(ts, "cx", element.cx()->currentValue()->value(lengthContext));
359        writeNameValuePair(ts, "cy", element.cy()->currentValue()->value(lengthContext));
360        writeNameValuePair(ts, "rx", element.rx()->currentValue()->value(lengthContext));
361        writeNameValuePair(ts, "ry", element.ry()->currentValue()->value(lengthContext));
362    } else if (isSVGCircleElement(*svgElement)) {
363        SVGCircleElement& element = toSVGCircleElement(*svgElement);
364        writeNameValuePair(ts, "cx", element.cx()->currentValue()->value(lengthContext));
365        writeNameValuePair(ts, "cy", element.cy()->currentValue()->value(lengthContext));
366        writeNameValuePair(ts, "r", element.r()->currentValue()->value(lengthContext));
367    } else if (isSVGPolyElement(*svgElement)) {
368        writeNameAndQuotedValue(ts, "points", toSVGPolyElement(*svgElement).points()->currentValue()->valueAsString());
369    } else if (isSVGPathElement(*svgElement)) {
370        String pathString;
371        // FIXME: We should switch to UnalteredParsing here - this will affect the path dumping output of dozens of tests.
372        buildStringFromByteStream(toSVGPathElement(*svgElement).pathByteStream(), pathString, NormalizedParsing);
373        writeNameAndQuotedValue(ts, "data", pathString);
374    } else
375        ASSERT_NOT_REACHED();
376    return ts;
377}
378
379static TextStream& operator<<(TextStream& ts, const RenderSVGRoot& root)
380{
381    return writePositionAndStyle(ts, root);
382}
383
384static void writeRenderSVGTextBox(TextStream& ts, const RenderSVGText& text)
385{
386    SVGRootInlineBox* box = toSVGRootInlineBox(text.firstRootBox());
387    if (!box)
388        return;
389
390    ts << " " << enclosingIntRect(FloatRect(text.location(), FloatSize(box->logicalWidth(), box->logicalHeight())));
391
392    // FIXME: Remove this hack, once the new text layout engine is completly landed. We want to preserve the old layout test results for now.
393    ts << " contains 1 chunk(s)";
394
395    if (text.parent() && (text.parent()->style()->visitedDependentColor(CSSPropertyColor) != text.style()->visitedDependentColor(CSSPropertyColor)))
396        writeNameValuePair(ts, "color", text.resolveColor(CSSPropertyColor).nameForRenderTreeAsText());
397}
398
399static inline void writeSVGInlineTextBox(TextStream& ts, SVGInlineTextBox* textBox, int indent)
400{
401    Vector<SVGTextFragment>& fragments = textBox->textFragments();
402    if (fragments.isEmpty())
403        return;
404
405    RenderSVGInlineText& textRenderer = toRenderSVGInlineText(textBox->textRenderer());
406
407    const SVGRenderStyle* svgStyle = textRenderer.style()->svgStyle();
408    String text = textBox->textRenderer().text();
409
410    unsigned fragmentsSize = fragments.size();
411    for (unsigned i = 0; i < fragmentsSize; ++i) {
412        SVGTextFragment& fragment = fragments.at(i);
413        writeIndent(ts, indent + 1);
414
415        unsigned startOffset = fragment.characterOffset;
416        unsigned endOffset = fragment.characterOffset + fragment.length;
417
418        // FIXME: Remove this hack, once the new text layout engine is completly landed. We want to preserve the old layout test results for now.
419        ts << "chunk 1 ";
420        ETextAnchor anchor = svgStyle->textAnchor();
421        bool isVerticalText = svgStyle->isVerticalWritingMode();
422        if (anchor == TA_MIDDLE) {
423            ts << "(middle anchor";
424            if (isVerticalText)
425                ts << ", vertical";
426            ts << ") ";
427        } else if (anchor == TA_END) {
428            ts << "(end anchor";
429            if (isVerticalText)
430                ts << ", vertical";
431            ts << ") ";
432        } else if (isVerticalText)
433            ts << "(vertical) ";
434        startOffset -= textBox->start();
435        endOffset -= textBox->start();
436        // </hack>
437
438        ts << "text run " << i + 1 << " at (" << fragment.x << "," << fragment.y << ")";
439        ts << " startOffset " << startOffset << " endOffset " << endOffset;
440        if (isVerticalText)
441            ts << " height " << fragment.height;
442        else
443            ts << " width " << fragment.width;
444
445        if (!textBox->isLeftToRightDirection() || textBox->dirOverride()) {
446            ts << (textBox->isLeftToRightDirection() ? " LTR" : " RTL");
447            if (textBox->dirOverride())
448                ts << " override";
449        }
450
451        ts << ": " << quoteAndEscapeNonPrintables(text.substring(fragment.characterOffset, fragment.length)) << "\n";
452    }
453}
454
455static inline void writeSVGInlineTextBoxes(TextStream& ts, const RenderText& text, int indent)
456{
457    for (InlineTextBox* box = text.firstTextBox(); box; box = box->nextTextBox()) {
458        if (!box->isSVGInlineTextBox())
459            continue;
460
461        writeSVGInlineTextBox(ts, toSVGInlineTextBox(box), indent);
462    }
463}
464
465static void writeStandardPrefix(TextStream& ts, const RenderObject& object, int indent)
466{
467    writeIndent(ts, indent);
468    ts << object.renderName();
469
470    if (object.node())
471        ts << " {" << object.node()->nodeName() << "}";
472}
473
474static void writeChildren(TextStream& ts, const RenderObject& object, int indent)
475{
476    for (RenderObject* child = object.slowFirstChild(); child; child = child->nextSibling())
477        write(ts, *child, indent + 1);
478}
479
480static inline void writeCommonGradientProperties(TextStream& ts, SVGSpreadMethodType spreadMethod, const AffineTransform& gradientTransform, SVGUnitTypes::SVGUnitType gradientUnits)
481{
482    writeNameValuePair(ts, "gradientUnits", gradientUnits);
483
484    if (spreadMethod != SVGSpreadMethodPad)
485        ts << " [spreadMethod=" << spreadMethod << "]";
486
487    if (!gradientTransform.isIdentity())
488        ts << " [gradientTransform=" << gradientTransform << "]";
489}
490
491void writeSVGResourceContainer(TextStream& ts, const RenderObject& object, int indent)
492{
493    writeStandardPrefix(ts, object, indent);
494
495    Element* element = toElement(object.node());
496    const AtomicString& id = element->getIdAttribute();
497    writeNameAndQuotedValue(ts, "id", id);
498
499    RenderSVGResourceContainer* resource = toRenderSVGResourceContainer(const_cast<RenderObject*>(&object));
500    ASSERT(resource);
501
502    if (resource->resourceType() == MaskerResourceType) {
503        RenderSVGResourceMasker* masker = toRenderSVGResourceMasker(resource);
504        writeNameValuePair(ts, "maskUnits", masker->maskUnits());
505        writeNameValuePair(ts, "maskContentUnits", masker->maskContentUnits());
506        ts << "\n";
507    } else if (resource->resourceType() == FilterResourceType) {
508        RenderSVGResourceFilter* filter = toRenderSVGResourceFilter(resource);
509        writeNameValuePair(ts, "filterUnits", filter->filterUnits());
510        writeNameValuePair(ts, "primitiveUnits", filter->primitiveUnits());
511        ts << "\n";
512        // Creating a placeholder filter which is passed to the builder.
513        FloatRect dummyRect;
514        IntRect dummyIntRect;
515        RefPtr<SVGFilter> dummyFilter = SVGFilter::create(AffineTransform(), dummyIntRect, dummyRect, dummyRect, true);
516        if (RefPtr<SVGFilterBuilder> builder = filter->buildPrimitives(dummyFilter.get())) {
517            if (FilterEffect* lastEffect = builder->lastEffect())
518                lastEffect->externalRepresentation(ts, indent + 1);
519        }
520    } else if (resource->resourceType() == ClipperResourceType) {
521        writeNameValuePair(ts, "clipPathUnits", toRenderSVGResourceClipper(resource)->clipPathUnits());
522        ts << "\n";
523    } else if (resource->resourceType() == MarkerResourceType) {
524        RenderSVGResourceMarker* marker = toRenderSVGResourceMarker(resource);
525        writeNameValuePair(ts, "markerUnits", marker->markerUnits());
526        ts << " [ref at " << marker->referencePoint() << "]";
527        ts << " [angle=";
528        if (marker->angle() == -1)
529            ts << "auto" << "]\n";
530        else
531            ts << marker->angle() << "]\n";
532    } else if (resource->resourceType() == PatternResourceType) {
533        RenderSVGResourcePattern* pattern = static_cast<RenderSVGResourcePattern*>(resource);
534
535        // Dump final results that are used for rendering. No use in asking SVGPatternElement for its patternUnits(), as it may
536        // link to other patterns using xlink:href, we need to build the full inheritance chain, aka. collectPatternProperties()
537        PatternAttributes attributes;
538        toSVGPatternElement(pattern->element())->collectPatternAttributes(attributes);
539
540        writeNameValuePair(ts, "patternUnits", attributes.patternUnits());
541        writeNameValuePair(ts, "patternContentUnits", attributes.patternContentUnits());
542
543        AffineTransform transform = attributes.patternTransform();
544        if (!transform.isIdentity())
545            ts << " [patternTransform=" << transform << "]";
546        ts << "\n";
547    } else if (resource->resourceType() == LinearGradientResourceType) {
548        RenderSVGResourceLinearGradient* gradient = static_cast<RenderSVGResourceLinearGradient*>(resource);
549
550        // Dump final results that are used for rendering. No use in asking SVGGradientElement for its gradientUnits(), as it may
551        // link to other gradients using xlink:href, we need to build the full inheritance chain, aka. collectGradientProperties()
552        LinearGradientAttributes attributes;
553        toSVGLinearGradientElement(gradient->element())->collectGradientAttributes(attributes);
554        writeCommonGradientProperties(ts, attributes.spreadMethod(), attributes.gradientTransform(), attributes.gradientUnits());
555
556        ts << " [start=" << gradient->startPoint(attributes) << "] [end=" << gradient->endPoint(attributes) << "]\n";
557    }  else if (resource->resourceType() == RadialGradientResourceType) {
558        RenderSVGResourceRadialGradient* gradient = toRenderSVGResourceRadialGradient(resource);
559
560        // Dump final results that are used for rendering. No use in asking SVGGradientElement for its gradientUnits(), as it may
561        // link to other gradients using xlink:href, we need to build the full inheritance chain, aka. collectGradientProperties()
562        RadialGradientAttributes attributes;
563        toSVGRadialGradientElement(gradient->element())->collectGradientAttributes(attributes);
564        writeCommonGradientProperties(ts, attributes.spreadMethod(), attributes.gradientTransform(), attributes.gradientUnits());
565
566        FloatPoint focalPoint = gradient->focalPoint(attributes);
567        FloatPoint centerPoint = gradient->centerPoint(attributes);
568        float radius = gradient->radius(attributes);
569        float focalRadius = gradient->focalRadius(attributes);
570
571        ts << " [center=" << centerPoint << "] [focal=" << focalPoint << "] [radius=" << radius << "] [focalRadius=" << focalRadius << "]\n";
572    } else
573        ts << "\n";
574    writeChildren(ts, object, indent);
575}
576
577void writeSVGContainer(TextStream& ts, const RenderObject& container, int indent)
578{
579    // Currently RenderSVGResourceFilterPrimitive has no meaningful output.
580    if (container.isSVGResourceFilterPrimitive())
581        return;
582    writeStandardPrefix(ts, container, indent);
583    writePositionAndStyle(ts, container);
584    ts << "\n";
585    writeResources(ts, container, indent);
586    writeChildren(ts, container, indent);
587}
588
589void write(TextStream& ts, const RenderSVGRoot& root, int indent)
590{
591    writeStandardPrefix(ts, root, indent);
592    ts << root << "\n";
593    writeChildren(ts, root, indent);
594}
595
596void writeSVGText(TextStream& ts, const RenderSVGText& text, int indent)
597{
598    writeStandardPrefix(ts, text, indent);
599    writeRenderSVGTextBox(ts, text);
600    ts << "\n";
601    writeResources(ts, text, indent);
602    writeChildren(ts, text, indent);
603}
604
605void writeSVGInlineText(TextStream& ts, const RenderSVGInlineText& text, int indent)
606{
607    writeStandardPrefix(ts, text, indent);
608    ts << " " << enclosingIntRect(FloatRect(text.firstRunOrigin(), text.floatLinesBoundingBox().size())) << "\n";
609    writeResources(ts, text, indent);
610    writeSVGInlineTextBoxes(ts, text, indent);
611}
612
613void writeSVGImage(TextStream& ts, const RenderSVGImage& image, int indent)
614{
615    writeStandardPrefix(ts, image, indent);
616    writePositionAndStyle(ts, image);
617    ts << "\n";
618    writeResources(ts, image, indent);
619}
620
621void write(TextStream& ts, const RenderSVGShape& shape, int indent)
622{
623    writeStandardPrefix(ts, shape, indent);
624    ts << shape << "\n";
625    writeResources(ts, shape, indent);
626}
627
628void writeSVGGradientStop(TextStream& ts, const RenderSVGGradientStop& stop, int indent)
629{
630    writeStandardPrefix(ts, stop, indent);
631
632    SVGStopElement* stopElement = toSVGStopElement(stop.node());
633    ASSERT(stopElement);
634
635    RenderStyle* style = stop.style();
636    if (!style)
637        return;
638
639    ts << " [offset=" << stopElement->offset()->currentValue()->value() << "] [color=" << stopElement->stopColorIncludingOpacity() << "]\n";
640}
641
642void writeResources(TextStream& ts, const RenderObject& object, int indent)
643{
644    const RenderStyle* style = object.style();
645    const SVGRenderStyle* svgStyle = style->svgStyle();
646
647    // FIXME: We want to use SVGResourcesCache to determine which resources are present, instead of quering the resource <-> id cache.
648    // For now leave the DRT output as is, but later on we should change this so cycles are properly ignored in the DRT output.
649    RenderObject& renderer = const_cast<RenderObject&>(object);
650    if (!svgStyle->maskerResource().isEmpty()) {
651        if (RenderSVGResourceMasker* masker = getRenderSVGResourceById<RenderSVGResourceMasker>(object.document(), svgStyle->maskerResource())) {
652            writeIndent(ts, indent);
653            ts << " ";
654            writeNameAndQuotedValue(ts, "masker", svgStyle->maskerResource());
655            ts << " ";
656            writeStandardPrefix(ts, *masker, 0);
657            ts << " " << masker->resourceBoundingBox(&renderer) << "\n";
658        }
659    }
660    if (!svgStyle->clipperResource().isEmpty()) {
661        if (RenderSVGResourceClipper* clipper = getRenderSVGResourceById<RenderSVGResourceClipper>(object.document(), svgStyle->clipperResource())) {
662            writeIndent(ts, indent);
663            ts << " ";
664            writeNameAndQuotedValue(ts, "clipPath", svgStyle->clipperResource());
665            ts << " ";
666            writeStandardPrefix(ts, *clipper, 0);
667            ts << " " << clipper->resourceBoundingBox(&renderer) << "\n";
668        }
669    }
670    if (!svgStyle->filterResource().isEmpty()) {
671        if (RenderSVGResourceFilter* filter = getRenderSVGResourceById<RenderSVGResourceFilter>(object.document(), svgStyle->filterResource())) {
672            writeIndent(ts, indent);
673            ts << " ";
674            writeNameAndQuotedValue(ts, "filter", svgStyle->filterResource());
675            ts << " ";
676            writeStandardPrefix(ts, *filter, 0);
677            ts << " " << filter->resourceBoundingBox(&renderer) << "\n";
678        }
679    }
680}
681
682} // namespace WebCore
683