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Diffstat (limited to 'ksvg/impl/SVGPatternElementImpl.cc')
| -rw-r--r-- | ksvg/impl/SVGPatternElementImpl.cc | 509 |
1 files changed, 509 insertions, 0 deletions
diff --git a/ksvg/impl/SVGPatternElementImpl.cc b/ksvg/impl/SVGPatternElementImpl.cc new file mode 100644 index 00000000..0b591487 --- /dev/null +++ b/ksvg/impl/SVGPatternElementImpl.cc @@ -0,0 +1,509 @@ +/* + Copyright (C) 2001-2003 KSVG Team + This file is part of the KDE project + + 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 <kdebug.h> +#include <klocale.h> + +#include "SVGPatternElement.h" +#include "SVGPatternElementImpl.h" + +#include "CanvasFactory.h" +#include "KSVGCanvas.h" +#include "CanvasItems.h" +#include "SVGHelperImpl.h" +#include "SVGDocumentImpl.h" +#include "SVGTransformListImpl.h" +#include "SVGAnimatedTransformListImpl.h" +#include "SVGAnimatedLengthImpl.h" +#include "SVGAnimatedEnumerationImpl.h" +#include "SVGAnimatedStringImpl.h" +#include "SVGUnitConverter.h" +#include "SVGShapeImpl.h" +#include "SVGSVGElementImpl.h" +#include "SVGMatrixImpl.h" +#include "SVGRectImpl.h" + +using namespace KSVG; + +#include "SVGPatternElementImpl.lut.h" +#include "ksvg_scriptinterpreter.h" +#include "ksvg_bridge.h" +#include "ksvg_ecma.h" + +QValueList<SVGPatternElementImpl *> SVGPatternElementImpl::m_patternElements; + +SVGPatternElementImpl::SVGPatternElementImpl(DOM::ElementImpl *impl) : SVGElementImpl(impl), SVGURIReferenceImpl(), SVGTestsImpl(), SVGLangSpaceImpl(), SVGExternalResourcesRequiredImpl(), SVGStylableImpl(this), SVGFitToViewBoxImpl(), SVGPaintServerImpl() +{ + KSVG_EMPTY_FLAGS + + m_patternUnits = new SVGAnimatedEnumerationImpl(); + m_patternUnits->ref(); + + m_patternContentUnits = new SVGAnimatedEnumerationImpl(); + m_patternContentUnits->ref(); + + m_patternTransform = new SVGAnimatedTransformListImpl(); + m_patternTransform->ref(); + + m_x = new SVGAnimatedLengthImpl(LENGTHMODE_WIDTH, this); + m_x->ref(); + + m_y = new SVGAnimatedLengthImpl(LENGTHMODE_HEIGHT, this); + m_y->ref(); + + m_width = new SVGAnimatedLengthImpl(LENGTHMODE_WIDTH, this); + m_width->ref(); + + m_height = new SVGAnimatedLengthImpl(LENGTHMODE_HEIGHT, this); + m_height->ref(); + + m_converter = new SVGUnitConverter(); + m_converter->add(m_x); + m_converter->add(m_y); + m_converter->add(m_width); + m_converter->add(m_height); + + m_patternElements.append(this); + + m_canvas = 0; + m_location = this; + + m_tileCache.setMaxTotalCost(1024 * 1024); +} + +SVGPatternElementImpl::~SVGPatternElementImpl() +{ + if(m_patternUnits) + m_patternUnits->deref(); + if(m_patternContentUnits) + m_patternContentUnits->deref(); + if(m_patternTransform) + m_patternTransform->deref(); + if(m_x) + m_x->deref(); + if(m_y) + m_y->deref(); + if(m_width) + m_width->deref(); + if(m_height) + m_height->deref(); + delete m_converter; + m_patternElements.remove(this); +} + +SVGAnimatedEnumerationImpl *SVGPatternElementImpl::patternUnits() const +{ + return m_patternUnits; +} + +SVGAnimatedEnumerationImpl *SVGPatternElementImpl::patternContentUnits() const +{ + return m_patternContentUnits; +} + +SVGAnimatedTransformListImpl *SVGPatternElementImpl::patternTransform() const +{ + return m_patternTransform; +} + +SVGAnimatedLengthImpl *SVGPatternElementImpl::x() const +{ + return m_x; +} + +SVGAnimatedLengthImpl *SVGPatternElementImpl::y() const +{ + return m_y; +} + +SVGAnimatedLengthImpl *SVGPatternElementImpl::width() const +{ + return m_width; +} + +SVGAnimatedLengthImpl *SVGPatternElementImpl::height() const +{ + return m_height; +} + +void SVGPatternElementImpl::createItem(KSVGCanvas *c) +{ + if(!c) + c = ownerDoc()->canvas(); + + if(!m_paintServer) + m_paintServer = c->createPaintServer(this); +} + +void SVGPatternElementImpl::removeItem(KSVGCanvas *) +{ + delete m_paintServer; + m_paintServer = 0; +} + +// Ecma stuff + +/* +@namespace KSVG +@begin SVGPatternElementImpl::s_hashTable 11 + x SVGPatternElementImpl::X DontDelete|ReadOnly + y SVGPatternElementImpl::Y DontDelete|ReadOnly + width SVGPatternElementImpl::Width DontDelete|ReadOnly + height SVGPatternElementImpl::Height DontDelete|ReadOnly + patternUnits SVGPatternElementImpl::PatternUnits DontDelete|ReadOnly + patternContentUnits SVGPatternElementImpl::PatternContentUnits DontDelete|ReadOnly + patternTransform SVGPatternElementImpl::PatternTransform DontDelete|ReadOnly +@end +*/ + +Value SVGPatternElementImpl::getValueProperty(ExecState *exec, int token) const +{ + KSVG_CHECK_ATTRIBUTE + + switch(token) + { + case X: + if(!attributeMode) + return m_x->cache(exec); + else + return Number(m_x->baseVal()->value()); + case Y: + if(!attributeMode) + return m_y->cache(exec); + else + return Number(m_y->baseVal()->value()); + case Width: + if(!attributeMode) + return m_width->cache(exec); + else + return Number(m_width->baseVal()->value()); + case Height: + if(!attributeMode) + return m_height->cache(exec); + else + return Number(m_height->baseVal()->value()); + case PatternUnits: + if(!attributeMode) + return m_patternUnits->cache(exec); + else + return Number(m_patternUnits->baseVal()); + case PatternContentUnits: + if(!attributeMode) + return m_patternContentUnits->cache(exec); + else + return Number(m_patternContentUnits->baseVal()); + case PatternTransform: + //if(!attributeMode) + return m_patternTransform->cache(exec); + //else + // return Number(m_patternTransform->baseVal()->value()); + default: + kdWarning() << "Unhandled token in " << k_funcinfo << " : " << token << endl; + return Undefined(); + } +} + +void SVGPatternElementImpl::putValueProperty(ExecState *exec, int token, const Value &value, int attr) +{ + // This class has just ReadOnly properties, only with the Internal flag set + // it's allowed to modify those. + if(!(attr & KJS::Internal)) + return; + + switch(token) + { + case X: + converter()->modify(x(), value.toString(exec).qstring()); + break; + case Y: + converter()->modify(y(), value.toString(exec).qstring()); + break; + case Width: + converter()->modify(width(), value.toString(exec).qstring()); + if(width()->baseVal()->value() < 0) // A negative value is an error + gotError(i18n("Negative value for attribute width of element <pattern> is illegal")); + break; + case Height: + converter()->modify(height(), value.toString(exec).qstring()); + if(height()->baseVal()->value() < 0) // A negative value is an error + gotError(i18n("Negative value for attribute height of element <pattern> is illegal")); + break; + case PatternUnits: + if(value.toString(exec).qstring() == "userSpaceOnUse") + m_patternUnits->setBaseVal(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE); + else + m_patternUnits->setBaseVal(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX); + break; + case PatternContentUnits: + if(value.toString(exec).qstring() == "userSpaceOnUse") + m_patternContentUnits->setBaseVal(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE); + else + m_patternContentUnits->setBaseVal(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX); + break; + case PatternTransform: + m_patternTransform->baseVal()->clear(); + SVGHelperImpl::parseTransformAttribute(m_patternTransform->baseVal(), value.toString(exec).qstring()); + break; + default: + kdWarning() << "Unhandled token in " << k_funcinfo << " : " << token << endl; + } +} + +void SVGPatternElementImpl::setAttributes() +{ + SVGElementImpl::setAttributes(); + + // Spec: if attribute not specified, use a value of 0 + if(KSVG_TOKEN_NOT_PARSED(X)) + KSVG_SET_ALT_ATTRIBUTE(X, "0") + + // Spec: if attribute not specified, use a value of 0 + if(KSVG_TOKEN_NOT_PARSED(Y)) + KSVG_SET_ALT_ATTRIBUTE(Y, "0") + + // Spec: if attribute not specified, use objectBoundingBox + if(KSVG_TOKEN_NOT_PARSED(PatternUnits)) + KSVG_SET_ALT_ATTRIBUTE(PatternUnits, "objectBoundingBox") + + // Spec: If attribute not specified, use userSpaceOnUse + if(KSVG_TOKEN_NOT_PARSED(PatternContentUnits)) + KSVG_SET_ALT_ATTRIBUTE(PatternContentUnits, "userSpaceOnUse") + + // Spec: default value + if(KSVG_TOKEN_NOT_PARSED(PreserveAspectRatio)) + KSVG_SET_ALT_ATTRIBUTE(PreserveAspectRatio, "xMidYMid meet") +} + +void SVGPatternElementImpl::flushCachedTiles() +{ + QValueList<SVGPatternElementImpl *>::iterator it; + + for(it = m_patternElements.begin(); it != m_patternElements.end(); it++) + { + SVGPatternElementImpl *pattern = *it; + + if(pattern->paintServer()) + pattern->paintServer()->resetFinalized(); + } +} + +QImage SVGPatternElementImpl::createTile(SVGShapeImpl *referencingElement, int imageWidth, int imageHeight) +{ + converter()->finalize(referencingElement, ownerSVGElement(), patternUnits()->baseVal()); + + QImage image(imageWidth, imageHeight, 32); + image.setAlphaBuffer(true); + + if(m_canvas == 0) + { + m_canvas = CanvasFactory::self()->loadCanvas(image.width(), image.height()); + m_canvas->setBackgroundColor(qRgba(0, 0, 0, 0)); + } + + m_canvas->setup(image.bits(), image.width(), image.height()); + + SVGMatrixImpl *baseMatrix = SVGSVGElementImpl::createSVGMatrix(); + + // Set the scale to map the tile onto the integral sized image + double xScale = static_cast<double>(imageWidth) / width()->baseVal()->value(); + double yScale = static_cast<double>(imageHeight) / height()->baseVal()->value(); + + baseMatrix->scaleNonUniform(xScale, yScale); + + if(hasAttribute("viewBox")) + { + SVGMatrixImpl *viewboxMatrix = viewBoxToViewTransform(width()->baseVal()->value(), height()->baseVal()->value()); + + baseMatrix->multiply(viewboxMatrix); + viewboxMatrix->deref(); + } + else + { + if(patternContentUnits()->baseVal() == SVGPatternElement::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) + { + // Get local coordinate bounding box + SVGRectImpl *rect = referencingElement->getBBox(); + + baseMatrix->translate(rect->qrect().x(), rect->qrect().y()); + baseMatrix->scaleNonUniform(rect->qrect().width(), rect->qrect().height()); + rect->deref(); + } + } + + for(DOM::Node node = m_location->firstChild(); !node.isNull(); node = node.nextSibling()) + { + SVGElementImpl *element = ownerDoc()->getElementFromHandle(node.handle()); + SVGShapeImpl *shape = dynamic_cast<SVGShapeImpl *>(element); + SVGTestsImpl *tests = dynamic_cast<SVGTestsImpl *>(element); + SVGStylableImpl *style = dynamic_cast<SVGStylableImpl *>(element); + + bool ok = tests ? tests->ok() : true; + if(element && shape && style && ok && style->getVisible() && style->getDisplay()) + { + SVGLocatableImpl *locatable = dynamic_cast<SVGLocatableImpl *>(element); + if(locatable) + locatable->updateCachedScreenCTM(baseMatrix); + + element->createItem(m_canvas); + if(shape->item()) + { + shape->item()->setReferenced(true); + m_canvas->invalidate(shape->item(), true); + } + } + } + + baseMatrix->deref(); + + m_canvas->update(float(1)); + + if(getOverflow()) + { + QPtrList<CanvasItem> items = m_canvas->allItems(); + QRect allItemsBBox; + + QPtrListIterator<CanvasItem> it(items); + CanvasItem *item; + + while((item = *it) != 0) + { + QRect bbox = item->bbox(); + allItemsBBox |= bbox; + ++it; + } + + if(allItemsBBox.left() < 0 || allItemsBBox.right() >= imageWidth || allItemsBBox.top() < 0 || allItemsBBox.bottom() >= imageHeight) + { + // Get the range in whole-tile units that covers the bounding box, where (0, 0) is the + // usual tile position. + int tileLeft = (allItemsBBox.left() - (imageWidth - 1)) / imageWidth; + int tileRight = allItemsBBox.right() / imageWidth; + int tileTop = (allItemsBBox.top() - (imageHeight - 1)) / imageHeight; + int tileBottom = allItemsBBox.bottom() / imageHeight; + + for(int tileX = tileLeft; tileX <= tileRight; tileX++) + { + for(int tileY = tileTop; tileY <= tileBottom; tileY++) + { + if(tileX != 0 || tileY !=0) + { + QPoint panPoint(-(tileX * imageWidth), -(tileY * imageHeight)); + m_canvas->update(panPoint, false); + } + } + } + } + } + + for(DOM::Node node = m_location->firstChild(); !node.isNull(); node = node.nextSibling()) + { + SVGElementImpl *element = ownerDoc()->getElementFromHandle(node.handle()); + + if(element) + element->removeItem(m_canvas); + } + + return image; +} + +void SVGPatternElementImpl::reference(const QString &href) +{ + // Copy attributes + SVGElementImpl *src = ownerSVGElement()->getElementById(href); + + if(src) + { + SVGHelperImpl::copyAttributes(src, this); + + // Spec: Change location to referenced element so we + // can take the children elements to render from there + if(m_location == this) + m_location = src; + } +} + +void SVGPatternElementImpl::finalizePaintServer() +{ + // Clear out any cached tiles since we may be being refinalised after an image + // inside a pattern has finished loading. + m_tileCache.clear(); + + QString _href = SVGURIReferenceImpl::getTarget(href()->baseVal().string()); + if(!_href.isEmpty()) + reference(_href); +} + +SVGPatternElementImpl::Tile SVGPatternElementImpl::createTile(SVGShapeImpl *referencingElement) +{ + converter()->finalize(referencingElement, ownerSVGElement(), patternUnits()->baseVal()); + + SVGTransformableImpl *transformable = dynamic_cast<SVGTransformableImpl *>(referencingElement); + SVGMatrixImpl *matrix = 0; + if(transformable) + matrix = transformable->getScreenCTM(); + else + matrix = SVGSVGElementImpl::createSVGMatrix(); + + matrix->translate(x()->baseVal()->value(), y()->baseVal()->value()); + + SVGMatrixImpl *patTransform = patternTransform()->baseVal()->concatenate(); + if(patTransform) + { + matrix->multiply(patTransform); + patTransform->deref(); + } + + double xScale, yScale; + matrix->removeScale(&xScale, &yScale); + + double tileWidth = width()->baseVal()->value() * xScale; + double tileHeight = height()->baseVal()->value() * yScale; + + int imageWidth = static_cast<int>(tileWidth + 0.5); + int imageHeight = static_cast<int>(tileHeight + 0.5); + + Tile tile; + + if(imageWidth > 0 && imageHeight > 0) + { + QSize size(imageWidth, imageHeight); + QImage image; + + if(!m_tileCache.find(size, image)) + { + image = createTile(referencingElement, imageWidth, imageHeight); + m_tileCache.insert(size, image, image.width() * image.height() * 4); + } + + // Map integral tile dimensions onto its true size + double adjustXScale = tileWidth / imageWidth; + double adjustYScale = tileHeight / imageHeight; + + matrix->scaleNonUniform(adjustXScale, adjustYScale); + QWMatrix screenToTile = matrix->qmatrix().invert(); + + tile = Tile(image, screenToTile); + } + + matrix->deref(); + + return tile; +} + |