diff options
Diffstat (limited to 'ksvg/impl/SVGLengthImpl.cc')
| -rw-r--r-- | ksvg/impl/SVGLengthImpl.cc | 510 |
1 files changed, 510 insertions, 0 deletions
diff --git a/ksvg/impl/SVGLengthImpl.cc b/ksvg/impl/SVGLengthImpl.cc new file mode 100644 index 00000000..46529022 --- /dev/null +++ b/ksvg/impl/SVGLengthImpl.cc @@ -0,0 +1,510 @@ +/* + 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 <qfont.h> +#include <qregexp.h> +#include <qwidget.h> +#include <qpaintdevicemetrics.h> + +#include "SVGLength.h" + +#include "SVGRectImpl.h" +#include "SVGLengthImpl.h" +#include "SVGMatrixImpl.h" +#include "SVGHelperImpl.h" +#include "SVGDocumentImpl.h" +#include "SVGStringListImpl.h" +#include "SVGSVGElementImpl.h" +#include "SVGAnimatedLengthImpl.h" +#include "SVGAnimatedRectImpl.h" +#include "svgpathparser.h" + +#include "KSVGCanvas.h" + +using namespace KSVG; + +#include "SVGLengthImpl.lut.h" +#include "ksvg_scriptinterpreter.h" +#include "ksvg_bridge.h" +#include "ksvg_cacheimpl.h" + +// keep track of textual description of the unit type +QString UnitText[] = +{ + "", "", "%", "em", "ex", "px", "cm", "mm", "in", "pt", "pc" +}; + +SVGLengthImpl::SVGLengthImpl(LengthMode mode, SVGElementImpl *context) : DOM::DomShared(), m_mode(mode), m_context(context) +{ + KSVG_EMPTY_FLAGS + + m_unitType = SVG_LENGTHTYPE_UNKNOWN; + m_value = 0; + m_valueInSpecifiedUnits = 0; + m_bboxContext = 0; +} + +SVGLengthImpl::SVGLengthImpl(const SVGLengthImpl &other) : DOM::DomShared() +{ + (*this) = other; +} + +SVGLengthImpl::~SVGLengthImpl() +{ +} + +double SVGLengthImpl::dpi() +{ + if(m_context && m_context->ownerDoc()) + { + if(m_mode == LENGTHMODE_WIDTH) + return 25.4 * m_context->ownerDoc()->screenPixelsPerMillimeterX(); + else if(m_mode == LENGTHMODE_HEIGHT) + return 25.4 * m_context->ownerDoc()->screenPixelsPerMillimeterY(); + else if(m_mode == LENGTHMODE_OTHER) + return 25.4 * m_context->ownerDoc()->screenPixelsPerMillimeterX(); + } + return 90.0; +} + +SVGLengthImpl &SVGLengthImpl::operator=(const SVGLengthImpl &other) +{ + m_unitType = other.m_unitType; + m_value = other.m_value; + m_valueInSpecifiedUnits = other.m_valueInSpecifiedUnits; + m_bboxContext = other.m_bboxContext; + m_mode = other.m_mode; + m_context = other.m_context; + + return *this; +} + +unsigned short SVGLengthImpl::unitType() const +{ + return m_unitType; +} + +void SVGLengthImpl::setValue(float value) +{ + m_value = value; + getValFromPx(); +} + +float SVGLengthImpl::value() +{ + if(m_unitType == SVG_LENGTHTYPE_PERCENTAGE) + { + float value = m_valueInSpecifiedUnits / 100.0; + SVGRectImpl *bbox = 0; + if(m_bboxContext && (bbox = m_bboxContext->getBBox())) + { + float result = 0; + if(m_mode == LENGTHMODE_WIDTH) + result = value * bbox->width(); + else if(m_mode == LENGTHMODE_HEIGHT) + result = value * bbox->height(); + else if(m_mode == LENGTHMODE_OTHER) + result = value * sqrt(pow(bbox->width(), 2) + pow(bbox->height(), 2)) / sqrt(2.0); + + bbox->deref(); + return result; + } + else + return percentageOfViewport(); + } + else + return m_value; +} + +void SVGLengthImpl::setValueInSpecifiedUnits(float valueInSpecifiedUnits) +{ + m_valueInSpecifiedUnits = valueInSpecifiedUnits; + convertNumToPx(); +} + +float SVGLengthImpl::valueInSpecifiedUnits() const +{ + return m_valueInSpecifiedUnits; +} + +void SVGLengthImpl::setValueAsString(const DOM::DOMString &valueAsString) +{ + convertStringToPx(valueAsString.string()); +} + +DOM::DOMString SVGLengthImpl::valueAsString() const +{ + DOM::DOMString valueAsString = QString::number(m_valueInSpecifiedUnits); + valueAsString += UnitText[m_unitType]; + return valueAsString; +} + +void SVGLengthImpl::newValueSpecifiedUnits(unsigned short unitType, float valueInSpecifiedUnits) +{ + m_valueInSpecifiedUnits = valueInSpecifiedUnits; + m_unitType = unitType; + convertNumToPx(); +} + +void SVGLengthImpl::convertToSpecifiedUnits(unsigned short unitType) +{ + m_unitType = unitType; + getValFromPx(); +} + +SVGLengthImpl::operator float() +{ + return valueInSpecifiedUnits(); +} + +bool SVGLengthImpl::getValFromPx() +{ + if(m_unitType == SVG_LENGTHTYPE_UNKNOWN) + return false; + + switch(m_unitType) + { + // case SVG_LENGTHTYPE_PERCENTAGE: TODO + // case SVG_LENGTHTYPE_EMS: TODO + // case SVG_LENGTHTYPE_EXS: TODO + //break; + case SVG_LENGTHTYPE_PX: + m_valueInSpecifiedUnits = m_value; + break; + case SVG_LENGTHTYPE_CM: + m_valueInSpecifiedUnits = m_value / dpi() * 2.54; + break; + case SVG_LENGTHTYPE_MM: + m_valueInSpecifiedUnits = m_value / dpi() * 25.4; + break; + case SVG_LENGTHTYPE_IN: + m_valueInSpecifiedUnits = m_value / dpi(); + break; + case SVG_LENGTHTYPE_PT: + m_valueInSpecifiedUnits = m_value / dpi() * 72.0; + break; + case SVG_LENGTHTYPE_PC: + m_valueInSpecifiedUnits = m_value / dpi() * 6.0; + break; + }; + return true; +} + +void SVGLengthImpl::convertStringToPx(QString s) +{ + if(s.isEmpty()) + return; + + double convNum = 0; + const char *start = s.latin1(); + const char *end = getNumber(start, convNum); + m_valueInSpecifiedUnits = convNum; + + if(uint(end - start) < s.length()) + { + if(s.endsWith(UnitText[SVG_LENGTHTYPE_PX])) + m_unitType = SVG_LENGTHTYPE_PX; + else if(s.endsWith(UnitText[SVG_LENGTHTYPE_CM])) + m_unitType = SVG_LENGTHTYPE_CM; + else if(s.endsWith(UnitText[SVG_LENGTHTYPE_PC])) + m_unitType = SVG_LENGTHTYPE_PC; + else if(s.endsWith(UnitText[SVG_LENGTHTYPE_MM])) + m_unitType = SVG_LENGTHTYPE_MM; + else if(s.endsWith(UnitText[SVG_LENGTHTYPE_IN])) + m_unitType = SVG_LENGTHTYPE_IN; + else if(s.endsWith(UnitText[SVG_LENGTHTYPE_PT])) + m_unitType = SVG_LENGTHTYPE_PT; + else if(s.endsWith(UnitText[SVG_LENGTHTYPE_PERCENTAGE])) + m_unitType = SVG_LENGTHTYPE_PERCENTAGE; + else if(s.endsWith(UnitText[SVG_LENGTHTYPE_EMS])) + m_unitType = SVG_LENGTHTYPE_EMS; + else if(s.endsWith(UnitText[SVG_LENGTHTYPE_EXS])) + m_unitType = SVG_LENGTHTYPE_EXS; + else if(s.isEmpty()) + m_unitType = SVG_LENGTHTYPE_NUMBER; + else + m_unitType = SVG_LENGTHTYPE_UNKNOWN; + } + else + m_unitType = SVG_LENGTHTYPE_PX; + convertNumToPx(); +} + +void SVGLengthImpl::convertNumToPx() +{ + switch(m_unitType) + { + case SVG_LENGTHTYPE_PX: + m_value = m_valueInSpecifiedUnits; + break; + case SVG_LENGTHTYPE_CM: + m_value = (m_valueInSpecifiedUnits / 2.54) * dpi(); + break; + case SVG_LENGTHTYPE_MM: + m_value = (m_valueInSpecifiedUnits / 25.4) * dpi(); + break; + case SVG_LENGTHTYPE_IN: + m_value = m_valueInSpecifiedUnits * dpi(); + break; + case SVG_LENGTHTYPE_PT: + m_value = (m_valueInSpecifiedUnits / 72.0) * dpi(); + break; + case SVG_LENGTHTYPE_PC: + m_value = (m_valueInSpecifiedUnits / 6.0) * dpi(); + break; + case SVG_LENGTHTYPE_EMS: // Be careful here, always recheck coords-units-BE-01.svg after touching (Niko) + case SVG_LENGTHTYPE_EXS: + if(m_context) + { + SVGStylableImpl *style = dynamic_cast<SVGStylableImpl *>(m_context); + if(!style) + break; + + bool sizeLocal = (style->getFontSize() != -1); + bool familyLocal = (style->getFontFamily() && style->getFontFamily()->getFirst()); + + SVGStylableImpl *parentStyle = 0; + if((!sizeLocal || !familyLocal) && m_context) + parentStyle = dynamic_cast<SVGStylableImpl *>(m_context->ownerDoc()->getElementFromHandle(m_context->parentNode().handle())); + + // Look up font-size in a SAFE way, because at this place + // processStyle() has NOT yet been called, so we need + // a different solution (Niko) + QString useFont = "Arial"; + double useSize = 12; + + if(sizeLocal) + useSize = style->getFontSize(); + else if(parentStyle && parentStyle->getFontSize() != -1) + useSize = parentStyle->getFontSize(); + + if(familyLocal) + useFont = style->getFontFamily()->getFirst()->string(); + else if(parentStyle && parentStyle->getFontFamily() && parentStyle->getFontFamily()->getFirst()) + useFont = parentStyle->getFontFamily()->getFirst()->string(); + + if(m_unitType == SVG_LENGTHTYPE_EMS) + m_value = m_valueInSpecifiedUnits * useSize; + else + { + // Easiest way, use qfont (Niko) + QFont font(useFont); + font.setPixelSize(static_cast<int>(useSize)); + + QFontMetrics fm(font); + m_value = m_valueInSpecifiedUnits * fm.boundingRect('x').height(); + } + } + break; + }; +} + +void SVGLengthImpl::convertPercentageToFloat(const QString &perc, float &result) +{ + // TODO : more error checking ? + if(perc.endsWith("%")) + result = perc.left(perc.length() - 1).toFloat() / 100.0; + else + result = perc.toFloat(); +} + +QString SVGLengthImpl::convertValToPercentage(const QString &val, float benchmark) +{ + if(val.endsWith("%")) + return val; + + QString result; + float temp = val.toFloat(); + + temp = (temp / benchmark) * 100.0; + result.setNum(temp); + result.append("%"); + + return result; +} + +SVGElementImpl *SVGLengthImpl::context() const +{ + return m_context; +} + +void SVGLengthImpl::setContext(SVGElementImpl *context) +{ + m_context = context; +} + +void SVGLengthImpl::setBBoxContext(SVGShapeImpl *bbox) +{ + m_bboxContext = bbox; + convertNumToPx(); +} + +float SVGLengthImpl::percentageOfViewport() +{ + float width = 0, height = 0; + float value = m_valueInSpecifiedUnits / 100.0; + if(m_context->viewportElement()) + { + SVGSVGElementImpl *svg = dynamic_cast<SVGSVGElementImpl *>(m_context->viewportElement()); + if(svg) + { + // Calculate against viewBox, otherwise svg width/height + width = svg->viewBox()->baseVal()->width(); + if(width == 0) + width = svg->width()->baseVal()->value(); + height = svg->viewBox()->baseVal()->height(); + if(height == 0) + height = svg->height()->baseVal()->value(); + } + + if(m_mode == LENGTHMODE_WIDTH) + return value * width; + else if(m_mode == LENGTHMODE_HEIGHT) + return value * height; + else if(m_mode == LENGTHMODE_OTHER) + return value * sqrt(pow(width, 2) + pow(height, 2)) / sqrt(2.0); + } + else if(m_context == m_context->ownerDoc()->rootElement()) + { + if(!m_context->ownerDoc()->canvas()) // Happens when parsing <svg width="100%"> with printnodetest + return 0.0; + + QPaintDeviceMetrics metrics(m_context->ownerDoc()->canvas()->drawWindow()); + + if(m_mode == LENGTHMODE_WIDTH) + return value * metrics.width(); + else if(m_mode == LENGTHMODE_HEIGHT) + return value * metrics.height(); + else if(m_mode == LENGTHMODE_OTHER) + return value * sqrt(pow(metrics.width(), 2) + pow(metrics.height(), 2)) / sqrt(2.0); + } + + return 0; +} + +// Ecma stuff +// +/* +@namespace KSVG +@begin SVGLengthImpl::s_hashTable 5 + unitType SVGLengthImpl::UnitType DontDelete|ReadOnly + value SVGLengthImpl::Value DontDelete + valueAsString SVGLengthImpl::ValueAsString DontDelete + valueInSpecifiedUnits SVGLengthImpl::ValueInSpecifiedUnits DontDelete +@end +@namespace KSVG +@begin SVGLengthImplProto::s_hashTable 3 + newValueSpecifiedUnits SVGLengthImpl::NewValueSpecifiedUnits DontDelete|Function 2 + convertToSpecifiedUnits SVGLengthImpl::ConvertToSpecifiedUnits DontDelete|Function 1 +@end +*/ + +KSVG_IMPLEMENT_PROTOTYPE("SVGLength", SVGLengthImplProto, SVGLengthImplProtoFunc) + +Value SVGLengthImpl::getValueProperty(ExecState *, int token) const +{ + switch(token) + { + case UnitType: + return Number(unitType()); + case Value: + return Number(m_value); + case ValueAsString: + return String(valueAsString().string()); + case ValueInSpecifiedUnits: + return Number(valueInSpecifiedUnits()); + default: + kdWarning() << "Unhandled token in " << k_funcinfo << " : " << token << endl; + return KJS::Undefined(); + } +} + +void SVGLengthImpl::putValueProperty(KJS::ExecState *exec, int token, const KJS::Value &value, int) +{ + switch(token) + { + case Value: + setValue(value.toNumber(exec)); + SVGHelperImpl::updateItem(exec, *m_context); + break; + case ValueAsString: + setValueAsString(value.toString(exec).string()); + SVGHelperImpl::updateItem(exec, *m_context); + break; + case ValueInSpecifiedUnits: + setValueInSpecifiedUnits(value.toNumber(exec)); + SVGHelperImpl::updateItem(exec, *m_context); + break; + default: + kdWarning() << "Unhandled token in " << k_funcinfo << " : " << token << endl; + } +} + +Value SVGLengthImplProtoFunc::call(ExecState *exec, Object &thisObj, const List &args) +{ + KSVG_CHECK_THIS(SVGLengthImpl) + + switch(id) + { + case SVGLengthImpl::NewValueSpecifiedUnits: + obj->newValueSpecifiedUnits(static_cast<unsigned short>(args[0].toNumber(exec)), args[1].toNumber(exec)); + SVGHelperImpl::updateItem(exec, *obj->context()); + return Undefined(); + case SVGLengthImpl::ConvertToSpecifiedUnits: + obj->convertToSpecifiedUnits(static_cast<unsigned short>(args[0].toNumber(exec))); + SVGHelperImpl::updateItem(exec, *obj->context()); + return Undefined(); + default: + kdWarning() << "Unhandled function id in " << k_funcinfo << " : " << id << endl; + break; + } + + return Undefined(); +} + +/* +@namespace KSVG +@begin SVGLengthImplConstructor::s_hashTable 11 + SVG_LENGTHTYPE_UNKNOWN KSVG::SVG_LENGTHTYPE_UNKNOWN DontDelete|ReadOnly + SVG_LENGTHTYPE_NUMBER KSVG::SVG_LENGTHTYPE_NUMBER DontDelete|ReadOnly + SVG_LENGTHTYPE_PERCENTAGE KSVG::SVG_LENGTHTYPE_PERCENTAGE DontDelete|ReadOnly + SVG_LENGTHTYPE_EMS KSVG::SVG_LENGTHTYPE_EMS DontDelete|ReadOnly + SVG_LENGTHTYPE_EXS KSVG::SVG_LENGTHTYPE_EXS DontDelete|ReadOnly + SVG_LENGTHTYPE_PX KSVG::SVG_LENGTHTYPE_PX DontDelete|ReadOnly + SVG_LENGTHTYPE_CM KSVG::SVG_LENGTHTYPE_CM DontDelete|ReadOnly + SVG_LENGTHTYPE_MM KSVG::SVG_LENGTHTYPE_MM DontDelete|ReadOnly + SVG_LENGTHTYPE_PT KSVG::SVG_LENGTHTYPE_PT DontDelete|ReadOnly + SVG_LENGTHTYPE_PC KSVG::SVG_LENGTHTYPE_PC DontDelete|ReadOnly +@end +*/ + +Value SVGLengthImplConstructor::getValueProperty(ExecState *, int token) const +{ + return Number(token); +} + +Value KSVG::getSVGLengthImplConstructor(ExecState *exec) +{ + return cacheGlobalBridge<SVGLengthImplConstructor>(exec, "[[svglength.constructor]]"); +} + +// vim:ts=4:noet |