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tdegraphics/ksvg/impl/SVGPatternElementImpl.cc

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/*
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"
TQValueList<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()
{
TQValueList<SVGPatternElementImpl *>::iterator it;
for(it = m_patternElements.begin(); it != m_patternElements.end(); it++)
{
SVGPatternElementImpl *pattern = *it;
if(pattern->paintServer())
pattern->paintServer()->resetFinalized();
}
}
TQImage SVGPatternElementImpl::createTile(SVGShapeImpl *referencingElement, int imageWidth, int imageHeight)
{
converter()->finalize(referencingElement, ownerSVGElement(), patternUnits()->baseVal());
TQImage 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())
{
TQPtrList<CanvasItem> items = m_canvas->allItems();
TQRect allItemsBBox;
TQPtrListIterator<CanvasItem> it(items);
CanvasItem *item;
while((item = *it) != 0)
{
TQRect 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)
{
TQPoint 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 TQString &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();
TQString _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)
{
TQSize size(imageWidth, imageHeight);
TQImage 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);
TQWMatrix screenToTile = matrix->qmatrix().invert();
tile = Tile(image, screenToTile);
}
matrix->deref();
return tile;
}