| /* |
| * Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2004, 2005, 2006, 2007, 2008 Rob Buis <buis@kde.org> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| #include "core/svg/SVGTextContentElement.h" |
| |
| #include "bindings/core/v8/ExceptionMessages.h" |
| #include "bindings/core/v8/ExceptionState.h" |
| #include "bindings/core/v8/ExceptionStatePlaceholder.h" |
| #include "core/CSSPropertyNames.h" |
| #include "core/CSSValueKeywords.h" |
| #include "core/SVGNames.h" |
| #include "core/XMLNames.h" |
| #include "core/editing/FrameSelection.h" |
| #include "core/frame/LocalFrame.h" |
| #include "core/rendering/RenderObject.h" |
| #include "core/rendering/svg/RenderSVGResource.h" |
| #include "core/rendering/svg/SVGTextQuery.h" |
| |
| namespace blink { |
| |
| template<> const SVGEnumerationStringEntries& getStaticStringEntries<SVGLengthAdjustType>() |
| { |
| DEFINE_STATIC_LOCAL(SVGEnumerationStringEntries, entries, ()); |
| if (entries.isEmpty()) { |
| entries.append(std::make_pair(SVGLengthAdjustSpacing, "spacing")); |
| entries.append(std::make_pair(SVGLengthAdjustSpacingAndGlyphs, "spacingAndGlyphs")); |
| } |
| return entries; |
| } |
| |
| // SVGTextContentElement's 'textLength' attribute needs special handling. |
| // It should return getComputedTextLength() when textLength is not specified manually. |
| class SVGAnimatedTextLength FINAL : public SVGAnimatedLength { |
| public: |
| static PassRefPtr<SVGAnimatedTextLength> create(SVGTextContentElement* contextElement) |
| { |
| return adoptRef(new SVGAnimatedTextLength(contextElement)); |
| } |
| |
| virtual SVGLengthTearOff* baseVal() OVERRIDE |
| { |
| SVGTextContentElement* textContentElement = toSVGTextContentElement(contextElement()); |
| if (!textContentElement->textLengthIsSpecifiedByUser()) |
| baseValue()->newValueSpecifiedUnits(LengthTypeNumber, textContentElement->getComputedTextLength()); |
| |
| return SVGAnimatedLength::baseVal(); |
| } |
| |
| private: |
| SVGAnimatedTextLength(SVGTextContentElement* contextElement) |
| : SVGAnimatedLength(contextElement, SVGNames::textLengthAttr, SVGLength::create(LengthModeOther), ForbidNegativeLengths) |
| { |
| } |
| }; |
| |
| |
| SVGTextContentElement::SVGTextContentElement(const QualifiedName& tagName, Document& document) |
| : SVGGraphicsElement(tagName, document) |
| , m_textLength(SVGAnimatedTextLength::create(this)) |
| , m_textLengthIsSpecifiedByUser(false) |
| , m_lengthAdjust(SVGAnimatedEnumeration<SVGLengthAdjustType>::create(this, SVGNames::lengthAdjustAttr, SVGLengthAdjustSpacing)) |
| { |
| addToPropertyMap(m_textLength); |
| addToPropertyMap(m_lengthAdjust); |
| } |
| |
| unsigned SVGTextContentElement::getNumberOfChars() |
| { |
| document().updateLayoutIgnorePendingStylesheets(); |
| return SVGTextQuery(renderer()).numberOfCharacters(); |
| } |
| |
| float SVGTextContentElement::getComputedTextLength() |
| { |
| document().updateLayoutIgnorePendingStylesheets(); |
| return SVGTextQuery(renderer()).textLength(); |
| } |
| |
| float SVGTextContentElement::getSubStringLength(unsigned charnum, unsigned nchars, ExceptionState& exceptionState) |
| { |
| document().updateLayoutIgnorePendingStylesheets(); |
| |
| unsigned numberOfChars = getNumberOfChars(); |
| if (charnum >= numberOfChars) { |
| exceptionState.throwDOMException(IndexSizeError, ExceptionMessages::indexExceedsMaximumBound("charnum", charnum, getNumberOfChars())); |
| return 0.0f; |
| } |
| |
| if (nchars > numberOfChars - charnum) |
| nchars = numberOfChars - charnum; |
| |
| return SVGTextQuery(renderer()).subStringLength(charnum, nchars); |
| } |
| |
| PassRefPtr<SVGPointTearOff> SVGTextContentElement::getStartPositionOfChar(unsigned charnum, ExceptionState& exceptionState) |
| { |
| document().updateLayoutIgnorePendingStylesheets(); |
| |
| if (charnum > getNumberOfChars()) { |
| exceptionState.throwDOMException(IndexSizeError, ExceptionMessages::indexExceedsMaximumBound("charnum", charnum, getNumberOfChars())); |
| return nullptr; |
| } |
| |
| FloatPoint point = SVGTextQuery(renderer()).startPositionOfCharacter(charnum); |
| return SVGPointTearOff::create(SVGPoint::create(point), 0, PropertyIsNotAnimVal); |
| } |
| |
| PassRefPtr<SVGPointTearOff> SVGTextContentElement::getEndPositionOfChar(unsigned charnum, ExceptionState& exceptionState) |
| { |
| document().updateLayoutIgnorePendingStylesheets(); |
| |
| if (charnum > getNumberOfChars()) { |
| exceptionState.throwDOMException(IndexSizeError, ExceptionMessages::indexExceedsMaximumBound("charnum", charnum, getNumberOfChars())); |
| return nullptr; |
| } |
| |
| FloatPoint point = SVGTextQuery(renderer()).endPositionOfCharacter(charnum); |
| return SVGPointTearOff::create(SVGPoint::create(point), 0, PropertyIsNotAnimVal); |
| } |
| |
| PassRefPtr<SVGRectTearOff> SVGTextContentElement::getExtentOfChar(unsigned charnum, ExceptionState& exceptionState) |
| { |
| document().updateLayoutIgnorePendingStylesheets(); |
| |
| if (charnum > getNumberOfChars()) { |
| exceptionState.throwDOMException(IndexSizeError, ExceptionMessages::indexExceedsMaximumBound("charnum", charnum, getNumberOfChars())); |
| return nullptr; |
| } |
| |
| FloatRect rect = SVGTextQuery(renderer()).extentOfCharacter(charnum); |
| return SVGRectTearOff::create(SVGRect::create(rect), 0, PropertyIsNotAnimVal); |
| } |
| |
| float SVGTextContentElement::getRotationOfChar(unsigned charnum, ExceptionState& exceptionState) |
| { |
| document().updateLayoutIgnorePendingStylesheets(); |
| |
| if (charnum > getNumberOfChars()) { |
| exceptionState.throwDOMException(IndexSizeError, ExceptionMessages::indexExceedsMaximumBound("charnum", charnum, getNumberOfChars())); |
| return 0.0f; |
| } |
| |
| return SVGTextQuery(renderer()).rotationOfCharacter(charnum); |
| } |
| |
| int SVGTextContentElement::getCharNumAtPosition(PassRefPtr<SVGPointTearOff> point, ExceptionState& exceptionState) |
| { |
| document().updateLayoutIgnorePendingStylesheets(); |
| return SVGTextQuery(renderer()).characterNumberAtPosition(point->target()->value()); |
| } |
| |
| void SVGTextContentElement::selectSubString(unsigned charnum, unsigned nchars, ExceptionState& exceptionState) |
| { |
| unsigned numberOfChars = getNumberOfChars(); |
| if (charnum >= numberOfChars) { |
| exceptionState.throwDOMException(IndexSizeError, ExceptionMessages::indexExceedsMaximumBound("charnum", charnum, getNumberOfChars())); |
| return; |
| } |
| |
| if (nchars > numberOfChars - charnum) |
| nchars = numberOfChars - charnum; |
| |
| ASSERT(document().frame()); |
| |
| // Find selection start |
| VisiblePosition start(firstPositionInNode(const_cast<SVGTextContentElement*>(this))); |
| for (unsigned i = 0; i < charnum; ++i) |
| start = start.next(); |
| |
| // Find selection end |
| VisiblePosition end(start); |
| for (unsigned i = 0; i < nchars; ++i) |
| end = end.next(); |
| |
| document().frame()->selection().setSelection(VisibleSelection(start, end)); |
| } |
| |
| bool SVGTextContentElement::isSupportedAttribute(const QualifiedName& attrName) |
| { |
| DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ()); |
| if (supportedAttributes.isEmpty()) { |
| supportedAttributes.add(SVGNames::lengthAdjustAttr); |
| supportedAttributes.add(SVGNames::textLengthAttr); |
| supportedAttributes.add(XMLNames::spaceAttr); |
| } |
| return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName); |
| } |
| |
| bool SVGTextContentElement::isPresentationAttribute(const QualifiedName& name) const |
| { |
| if (name.matches(XMLNames::spaceAttr)) |
| return true; |
| return SVGGraphicsElement::isPresentationAttribute(name); |
| } |
| |
| void SVGTextContentElement::collectStyleForPresentationAttribute(const QualifiedName& name, const AtomicString& value, MutableStylePropertySet* style) |
| { |
| if (!isSupportedAttribute(name)) |
| SVGGraphicsElement::collectStyleForPresentationAttribute(name, value, style); |
| else if (name.matches(XMLNames::spaceAttr)) { |
| DEFINE_STATIC_LOCAL(const AtomicString, preserveString, ("preserve", AtomicString::ConstructFromLiteral)); |
| |
| if (value == preserveString) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyWhiteSpace, CSSValuePre); |
| else |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyWhiteSpace, CSSValueNowrap); |
| } |
| } |
| |
| void SVGTextContentElement::parseAttribute(const QualifiedName& name, const AtomicString& value) |
| { |
| SVGParsingError parseError = NoError; |
| |
| if (!isSupportedAttribute(name)) |
| SVGGraphicsElement::parseAttribute(name, value); |
| else if (name == SVGNames::lengthAdjustAttr) { |
| m_lengthAdjust->setBaseValueAsString(value, parseError); |
| } else if (name == SVGNames::textLengthAttr) { |
| m_textLength->setBaseValueAsString(value, parseError); |
| } else if (name.matches(XMLNames::spaceAttr)) { |
| } else |
| ASSERT_NOT_REACHED(); |
| |
| reportAttributeParsingError(parseError, name, value); |
| } |
| |
| void SVGTextContentElement::svgAttributeChanged(const QualifiedName& attrName) |
| { |
| if (!isSupportedAttribute(attrName)) { |
| SVGGraphicsElement::svgAttributeChanged(attrName); |
| return; |
| } |
| |
| if (attrName == SVGNames::textLengthAttr) |
| m_textLengthIsSpecifiedByUser = true; |
| |
| SVGElement::InvalidationGuard invalidationGuard(this); |
| |
| if (RenderObject* renderer = this->renderer()) |
| RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer); |
| } |
| |
| bool SVGTextContentElement::selfHasRelativeLengths() const |
| { |
| // Any element of the <text> subtree is advertized as using relative lengths. |
| // On any window size change, we have to relayout the text subtree, as the |
| // effective 'on-screen' font size may change. |
| return true; |
| } |
| |
| SVGTextContentElement* SVGTextContentElement::elementFromRenderer(RenderObject* renderer) |
| { |
| if (!renderer) |
| return 0; |
| |
| if (!renderer->isSVGText() && !renderer->isSVGInline()) |
| return 0; |
| |
| SVGElement* element = toSVGElement(renderer->node()); |
| ASSERT(element); |
| return isSVGTextContentElement(*element) ? toSVGTextContentElement(element) : 0; |
| } |
| |
| } |