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509 lines
14 KiB
509 lines
14 KiB
/*
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Copyright (C) 2001-2003 KSVG Team
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This file is part of the KDE project
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include <kdebug.h>
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#include <tqfont.h>
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#include <tqregexp.h>
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#include <tqwidget.h>
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#include <tqpaintdevicemetrics.h>
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#include "SVGLength.h"
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#include "SVGRectImpl.h"
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#include "SVGLengthImpl.h"
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#include "SVGMatrixImpl.h"
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#include "SVGHelperImpl.h"
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#include "SVGDocumentImpl.h"
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#include "SVGStringListImpl.h"
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#include "SVGSVGElementImpl.h"
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#include "SVGAnimatedLengthImpl.h"
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#include "SVGAnimatedRectImpl.h"
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#include "svgpathparser.h"
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#include "KSVGCanvas.h"
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using namespace KSVG;
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#include "SVGLengthImpl.lut.h"
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#include "ksvg_scriptinterpreter.h"
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#include "ksvg_bridge.h"
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#include "ksvg_cacheimpl.h"
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// keep track of textual description of the unit type
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TQString UnitText[] =
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{
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"", "", "%", "em", "ex", "px", "cm", "mm", "in", "pt", "pc"
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};
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SVGLengthImpl::SVGLengthImpl(LengthMode mode, SVGElementImpl *context) : DOM::DomShared(), m_mode(mode), m_context(context)
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{
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KSVG_EMPTY_FLAGS
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m_unitType = SVG_LENGTHTYPE_UNKNOWN;
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m_value = 0;
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m_valueInSpecifiedUnits = 0;
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m_bboxContext = 0;
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}
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SVGLengthImpl::SVGLengthImpl(const SVGLengthImpl &other) : DOM::DomShared()
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{
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(*this) = other;
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}
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SVGLengthImpl::~SVGLengthImpl()
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{
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}
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double SVGLengthImpl::dpi()
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{
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if(m_context && m_context->ownerDoc())
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{
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if(m_mode == LENGTHMODE_WIDTH)
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return 25.4 * m_context->ownerDoc()->screenPixelsPerMillimeterX();
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else if(m_mode == LENGTHMODE_HEIGHT)
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return 25.4 * m_context->ownerDoc()->screenPixelsPerMillimeterY();
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else if(m_mode == LENGTHMODE_OTHER)
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return 25.4 * m_context->ownerDoc()->screenPixelsPerMillimeterX();
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}
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return 90.0;
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}
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SVGLengthImpl &SVGLengthImpl::operator=(const SVGLengthImpl &other)
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{
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m_unitType = other.m_unitType;
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m_value = other.m_value;
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m_valueInSpecifiedUnits = other.m_valueInSpecifiedUnits;
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m_bboxContext = other.m_bboxContext;
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m_mode = other.m_mode;
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m_context = other.m_context;
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return *this;
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}
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unsigned short SVGLengthImpl::unitType() const
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{
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return m_unitType;
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}
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void SVGLengthImpl::setValue(float value)
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{
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m_value = value;
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getValFromPx();
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}
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float SVGLengthImpl::value()
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{
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if(m_unitType == SVG_LENGTHTYPE_PERCENTAGE)
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{
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float value = m_valueInSpecifiedUnits / 100.0;
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SVGRectImpl *bbox = 0;
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if(m_bboxContext && (bbox = m_bboxContext->getBBox()))
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{
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float result = 0;
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if(m_mode == LENGTHMODE_WIDTH)
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result = value * bbox->width();
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else if(m_mode == LENGTHMODE_HEIGHT)
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result = value * bbox->height();
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else if(m_mode == LENGTHMODE_OTHER)
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result = value * sqrt(pow(bbox->width(), 2) + pow(bbox->height(), 2)) / sqrt(2.0);
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bbox->deref();
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return result;
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}
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else
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return percentageOfViewport();
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}
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else
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return m_value;
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}
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void SVGLengthImpl::setValueInSpecifiedUnits(float valueInSpecifiedUnits)
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{
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m_valueInSpecifiedUnits = valueInSpecifiedUnits;
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convertNumToPx();
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}
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float SVGLengthImpl::valueInSpecifiedUnits() const
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{
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return m_valueInSpecifiedUnits;
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}
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void SVGLengthImpl::setValueAsString(const DOM::DOMString &valueAsString)
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{
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convertStringToPx(valueAsString.string());
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}
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DOM::DOMString SVGLengthImpl::valueAsString() const
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{
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DOM::DOMString valueAsString = TQString::number(m_valueInSpecifiedUnits);
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valueAsString += UnitText[m_unitType];
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return valueAsString;
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}
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void SVGLengthImpl::newValueSpecifiedUnits(unsigned short unitType, float valueInSpecifiedUnits)
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{
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m_valueInSpecifiedUnits = valueInSpecifiedUnits;
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m_unitType = unitType;
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convertNumToPx();
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}
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void SVGLengthImpl::convertToSpecifiedUnits(unsigned short unitType)
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{
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m_unitType = unitType;
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getValFromPx();
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}
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SVGLengthImpl::operator float()
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{
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return valueInSpecifiedUnits();
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}
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bool SVGLengthImpl::getValFromPx()
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{
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if(m_unitType == SVG_LENGTHTYPE_UNKNOWN)
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return false;
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switch(m_unitType)
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{
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// case SVG_LENGTHTYPE_PERCENTAGE: TODO
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// case SVG_LENGTHTYPE_EMS: TODO
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// case SVG_LENGTHTYPE_EXS: TODO
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//break;
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case SVG_LENGTHTYPE_PX:
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m_valueInSpecifiedUnits = m_value;
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break;
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case SVG_LENGTHTYPE_CM:
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m_valueInSpecifiedUnits = m_value / dpi() * 2.54;
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break;
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case SVG_LENGTHTYPE_MM:
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m_valueInSpecifiedUnits = m_value / dpi() * 25.4;
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break;
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case SVG_LENGTHTYPE_IN:
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m_valueInSpecifiedUnits = m_value / dpi();
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break;
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case SVG_LENGTHTYPE_PT:
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m_valueInSpecifiedUnits = m_value / dpi() * 72.0;
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break;
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case SVG_LENGTHTYPE_PC:
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m_valueInSpecifiedUnits = m_value / dpi() * 6.0;
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break;
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};
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return true;
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}
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void SVGLengthImpl::convertStringToPx(TQString s)
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{
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if(s.isEmpty())
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return;
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double convNum = 0;
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const char *start = s.latin1();
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const char *end = getNumber(start, convNum);
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m_valueInSpecifiedUnits = convNum;
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if(uint(end - start) < s.length())
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{
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if(s.endsWith(UnitText[SVG_LENGTHTYPE_PX]))
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m_unitType = SVG_LENGTHTYPE_PX;
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else if(s.endsWith(UnitText[SVG_LENGTHTYPE_CM]))
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m_unitType = SVG_LENGTHTYPE_CM;
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else if(s.endsWith(UnitText[SVG_LENGTHTYPE_PC]))
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m_unitType = SVG_LENGTHTYPE_PC;
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else if(s.endsWith(UnitText[SVG_LENGTHTYPE_MM]))
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m_unitType = SVG_LENGTHTYPE_MM;
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else if(s.endsWith(UnitText[SVG_LENGTHTYPE_IN]))
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m_unitType = SVG_LENGTHTYPE_IN;
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else if(s.endsWith(UnitText[SVG_LENGTHTYPE_PT]))
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m_unitType = SVG_LENGTHTYPE_PT;
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else if(s.endsWith(UnitText[SVG_LENGTHTYPE_PERCENTAGE]))
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m_unitType = SVG_LENGTHTYPE_PERCENTAGE;
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else if(s.endsWith(UnitText[SVG_LENGTHTYPE_EMS]))
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m_unitType = SVG_LENGTHTYPE_EMS;
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else if(s.endsWith(UnitText[SVG_LENGTHTYPE_EXS]))
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m_unitType = SVG_LENGTHTYPE_EXS;
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else if(s.isEmpty())
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m_unitType = SVG_LENGTHTYPE_NUMBER;
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else
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m_unitType = SVG_LENGTHTYPE_UNKNOWN;
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}
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else
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m_unitType = SVG_LENGTHTYPE_PX;
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convertNumToPx();
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}
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void SVGLengthImpl::convertNumToPx()
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{
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switch(m_unitType)
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{
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case SVG_LENGTHTYPE_PX:
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m_value = m_valueInSpecifiedUnits;
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break;
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case SVG_LENGTHTYPE_CM:
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m_value = (m_valueInSpecifiedUnits / 2.54) * dpi();
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break;
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case SVG_LENGTHTYPE_MM:
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m_value = (m_valueInSpecifiedUnits / 25.4) * dpi();
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break;
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case SVG_LENGTHTYPE_IN:
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m_value = m_valueInSpecifiedUnits * dpi();
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break;
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case SVG_LENGTHTYPE_PT:
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m_value = (m_valueInSpecifiedUnits / 72.0) * dpi();
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break;
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case SVG_LENGTHTYPE_PC:
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m_value = (m_valueInSpecifiedUnits / 6.0) * dpi();
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break;
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case SVG_LENGTHTYPE_EMS: // Be careful here, always recheck coords-units-BE-01.svg after touching (Niko)
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case SVG_LENGTHTYPE_EXS:
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if(m_context)
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{
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SVGStylableImpl *style = dynamic_cast<SVGStylableImpl *>(m_context);
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if(!style)
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break;
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bool sizeLocal = (style->getFontSize() != -1);
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bool familyLocal = (style->getFontFamily() && style->getFontFamily()->getFirst());
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SVGStylableImpl *parentStyle = 0;
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if((!sizeLocal || !familyLocal) && m_context)
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parentStyle = dynamic_cast<SVGStylableImpl *>(m_context->ownerDoc()->getElementFromHandle(m_context->parentNode().handle()));
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// Look up font-size in a SAFE way, because at this place
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// processStyle() has NOT yet been called, so we need
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// a different solution (Niko)
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TQString useFont = "Arial";
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double useSize = 12;
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if(sizeLocal)
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useSize = style->getFontSize();
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else if(parentStyle && parentStyle->getFontSize() != -1)
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useSize = parentStyle->getFontSize();
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if(familyLocal)
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useFont = style->getFontFamily()->getFirst()->string();
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else if(parentStyle && parentStyle->getFontFamily() && parentStyle->getFontFamily()->getFirst())
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useFont = parentStyle->getFontFamily()->getFirst()->string();
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if(m_unitType == SVG_LENGTHTYPE_EMS)
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m_value = m_valueInSpecifiedUnits * useSize;
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else
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{
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// Easiest way, use qfont (Niko)
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TQFont font(useFont);
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font.setPixelSize(static_cast<int>(useSize));
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TQFontMetrics fm(font);
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m_value = m_valueInSpecifiedUnits * fm.boundingRect('x').height();
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}
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}
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break;
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};
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}
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void SVGLengthImpl::convertPercentageToFloat(const TQString &perc, float &result)
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{
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// TODO : more error checking ?
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if(perc.endsWith("%"))
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result = perc.left(perc.length() - 1).toFloat() / 100.0;
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else
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result = perc.toFloat();
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}
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TQString SVGLengthImpl::convertValToPercentage(const TQString &val, float benchmark)
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{
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if(val.endsWith("%"))
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return val;
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TQString result;
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float temp = val.toFloat();
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temp = (temp / benchmark) * 100.0;
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result.setNum(temp);
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result.append("%");
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return result;
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}
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SVGElementImpl *SVGLengthImpl::context() const
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{
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return m_context;
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}
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void SVGLengthImpl::setContext(SVGElementImpl *context)
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{
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m_context = context;
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}
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void SVGLengthImpl::setBBoxContext(SVGShapeImpl *bbox)
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{
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m_bboxContext = bbox;
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convertNumToPx();
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}
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float SVGLengthImpl::percentageOfViewport()
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{
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float width = 0, height = 0;
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float value = m_valueInSpecifiedUnits / 100.0;
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if(m_context->viewportElement())
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{
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SVGSVGElementImpl *svg = dynamic_cast<SVGSVGElementImpl *>(m_context->viewportElement());
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if(svg)
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{
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// Calculate against viewBox, otherwise svg width/height
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width = svg->viewBox()->baseVal()->width();
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if(width == 0)
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width = svg->width()->baseVal()->value();
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height = svg->viewBox()->baseVal()->height();
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if(height == 0)
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height = svg->height()->baseVal()->value();
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}
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if(m_mode == LENGTHMODE_WIDTH)
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return value * width;
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else if(m_mode == LENGTHMODE_HEIGHT)
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return value * height;
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else if(m_mode == LENGTHMODE_OTHER)
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return value * sqrt(pow(width, 2) + pow(height, 2)) / sqrt(2.0);
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}
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else if(m_context == m_context->ownerDoc()->rootElement())
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{
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if(!m_context->ownerDoc()->canvas()) // Happens when parsing <svg width="100%"> with printnodetest
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return 0.0;
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TQPaintDeviceMetrics metrics(m_context->ownerDoc()->canvas()->drawWindow());
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if(m_mode == LENGTHMODE_WIDTH)
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return value * metrics.width();
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else if(m_mode == LENGTHMODE_HEIGHT)
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return value * metrics.height();
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else if(m_mode == LENGTHMODE_OTHER)
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return value * sqrt(pow(metrics.width(), 2) + pow(metrics.height(), 2)) / sqrt(2.0);
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}
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return 0;
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}
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// Ecma stuff
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//
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/*
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@namespace KSVG
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@begin SVGLengthImpl::s_hashTable 5
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unitType SVGLengthImpl::UnitType DontDelete|ReadOnly
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value SVGLengthImpl::Value DontDelete
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valueAsString SVGLengthImpl::ValueAsString DontDelete
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valueInSpecifiedUnits SVGLengthImpl::ValueInSpecifiedUnits DontDelete
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@end
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@namespace KSVG
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@begin SVGLengthImplProto::s_hashTable 3
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newValueSpecifiedUnits SVGLengthImpl::NewValueSpecifiedUnits DontDelete|Function 2
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convertToSpecifiedUnits SVGLengthImpl::ConvertToSpecifiedUnits DontDelete|Function 1
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@end
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*/
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KSVG_IMPLEMENT_PROTOTYPE("SVGLength", SVGLengthImplProto, SVGLengthImplProtoFunc)
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Value SVGLengthImpl::getValueProperty(ExecState *, int token) const
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{
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switch(token)
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{
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case UnitType:
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return Number(unitType());
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case Value:
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return Number(m_value);
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case ValueAsString:
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return String(valueAsString().string());
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case ValueInSpecifiedUnits:
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return Number(valueInSpecifiedUnits());
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default:
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kdWarning() << "Unhandled token in " << k_funcinfo << " : " << token << endl;
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return KJS::Undefined();
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}
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}
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void SVGLengthImpl::putValueProperty(KJS::ExecState *exec, int token, const KJS::Value &value, int)
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{
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switch(token)
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{
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case Value:
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setValue(value.toNumber(exec));
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SVGHelperImpl::updateItem(exec, *m_context);
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break;
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case ValueAsString:
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setValueAsString(value.toString(exec).string());
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SVGHelperImpl::updateItem(exec, *m_context);
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break;
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case ValueInSpecifiedUnits:
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setValueInSpecifiedUnits(value.toNumber(exec));
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SVGHelperImpl::updateItem(exec, *m_context);
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break;
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default:
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kdWarning() << "Unhandled token in " << k_funcinfo << " : " << token << endl;
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}
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}
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Value SVGLengthImplProtoFunc::call(ExecState *exec, Object &thisObj, const List &args)
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{
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KSVG_CHECK_THIS(SVGLengthImpl)
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switch(id)
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{
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case SVGLengthImpl::NewValueSpecifiedUnits:
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obj->newValueSpecifiedUnits(static_cast<unsigned short>(args[0].toNumber(exec)), args[1].toNumber(exec));
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SVGHelperImpl::updateItem(exec, *obj->context());
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return Undefined();
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case SVGLengthImpl::ConvertToSpecifiedUnits:
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obj->convertToSpecifiedUnits(static_cast<unsigned short>(args[0].toNumber(exec)));
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SVGHelperImpl::updateItem(exec, *obj->context());
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return Undefined();
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default:
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kdWarning() << "Unhandled function id in " << k_funcinfo << " : " << id << endl;
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break;
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}
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return Undefined();
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}
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/*
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@namespace KSVG
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@begin SVGLengthImplConstructor::s_hashTable 11
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SVG_LENGTHTYPE_UNKNOWN KSVG::SVG_LENGTHTYPE_UNKNOWN DontDelete|ReadOnly
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SVG_LENGTHTYPE_NUMBER KSVG::SVG_LENGTHTYPE_NUMBER DontDelete|ReadOnly
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SVG_LENGTHTYPE_PERCENTAGE KSVG::SVG_LENGTHTYPE_PERCENTAGE DontDelete|ReadOnly
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SVG_LENGTHTYPE_EMS KSVG::SVG_LENGTHTYPE_EMS DontDelete|ReadOnly
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SVG_LENGTHTYPE_EXS KSVG::SVG_LENGTHTYPE_EXS DontDelete|ReadOnly
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SVG_LENGTHTYPE_PX KSVG::SVG_LENGTHTYPE_PX DontDelete|ReadOnly
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SVG_LENGTHTYPE_CM KSVG::SVG_LENGTHTYPE_CM DontDelete|ReadOnly
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SVG_LENGTHTYPE_MM KSVG::SVG_LENGTHTYPE_MM DontDelete|ReadOnly
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SVG_LENGTHTYPE_PT KSVG::SVG_LENGTHTYPE_PT DontDelete|ReadOnly
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SVG_LENGTHTYPE_PC KSVG::SVG_LENGTHTYPE_PC DontDelete|ReadOnly
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@end
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*/
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Value SVGLengthImplConstructor::getValueProperty(ExecState *, int token) const
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{
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return Number(token);
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}
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Value KSVG::getSVGLengthImplConstructor(ExecState *exec)
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{
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return cacheGlobalBridge<SVGLengthImplConstructor>(exec, "[[svglength.constructor]]");
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}
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