| /* |
| Copyright (C) 2004, 2005 Nikolas Zimmermann <wildfox@kde.org> |
| 2004, 2005 Rob Buis <buis@kde.org> |
| |
| 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., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. |
| */ |
| |
| #include "config.h" |
| #include <qrect.h> |
| |
| #include <kdebug.h> |
| |
| #include <kcanvas/KCanvas.h> |
| #include <kcanvas/KCanvasItem.h> |
| #include <kcanvas/device/KRenderingStyle.h> |
| |
| #include "ksvg.h" |
| #include "svgpathparser.h" |
| #include "SVGLengthImpl.h" |
| #include "SVGElementImpl.h" |
| #include "SVGDocumentImpl.h" |
| #include "SVGSVGElementImpl.h" |
| #include "SVGAnimatedRectImpl.h" |
| #include "SVGAnimatedLengthImpl.h" |
| |
| #include <cmath> |
| |
| using namespace KSVG; |
| using namespace std; |
| |
| // keep track of textual description of the unit type |
| QString UnitText[] = |
| { |
| QString::fromLatin1(""), QString::fromLatin1(""), |
| QString::fromLatin1("%"), QString::fromLatin1("em"), |
| QString::fromLatin1("ex"), QString::fromLatin1("px"), |
| QString::fromLatin1("cm"), QString::fromLatin1("mm"), |
| QString::fromLatin1("in"), QString::fromLatin1("pt"), |
| QString::fromLatin1("pc") |
| }; |
| |
| SVGLengthImpl::SVGLengthImpl(const SVGStyledElementImpl *context, LengthMode mode, const SVGElementImpl *viewport) : KDOM::Shared() |
| { |
| m_mode = mode; |
| m_context = context; |
| m_viewportElement = viewport; |
| |
| m_value = 0; |
| m_valueInSpecifiedUnits = 0; |
| |
| m_bboxRelative = false; |
| m_unitType = SVG_LENGTHTYPE_UNKNOWN; |
| } |
| |
| SVGLengthImpl::~SVGLengthImpl() |
| { |
| } |
| |
| unsigned short SVGLengthImpl::unitType() const |
| { |
| return m_unitType; |
| } |
| |
| void SVGLengthImpl::setValue(float value) |
| { |
| m_value = value; |
| updateValueInSpecifiedUnits(); |
| } |
| |
| float SVGLengthImpl::value() const |
| { |
| if(m_unitType != SVG_LENGTHTYPE_PERCENTAGE) |
| return m_value; |
| |
| float value = m_valueInSpecifiedUnits / 100.0; |
| if(m_bboxRelative) |
| return value; |
| |
| // Spec: When percentages are used with attributes that define the |
| // gradient vector, the pattern tile, the filter region or the masking |
| // region, a percentage represents the same value as the corresponding |
| // decimal value (e.g., 50% means the same as 0.5). |
| KCanvasItem *item = (m_context ? m_context->canvasItem() : 0); |
| if(item) |
| { |
| QRect bbox = item->bbox(); |
| |
| float result = 0; |
| if(m_mode == LM_WIDTH) |
| result = value * (bbox.width() - 1); |
| else if(m_mode == LM_HEIGHT) |
| result = value * (bbox.height() - 1); |
| else if(m_mode == LM_OTHER) |
| result = value * sqrt(pow(double(bbox.width() - 1), 2) + pow(double(bbox.height() - 1), 2)) / sqrt(2.0); |
| |
| return result; |
| } |
| |
| return SVGHelper::PercentageOfViewport(value, m_viewportElement, m_mode); |
| } |
| |
| void SVGLengthImpl::setValueInSpecifiedUnits(float valueInSpecifiedUnits) |
| { |
| m_valueInSpecifiedUnits = valueInSpecifiedUnits; |
| updateValue(); |
| } |
| |
| float SVGLengthImpl::valueInSpecifiedUnits() const |
| { |
| return m_valueInSpecifiedUnits; |
| } |
| |
| void SVGLengthImpl::setValueAsString(KDOM::DOMStringImpl *valueAsString) |
| { |
| if(!valueAsString || valueAsString->isEmpty()) |
| return; |
| |
| QString valueAsQString = valueAsString->string(); |
| |
| double convertedNumber = 0; |
| const char *start = valueAsQString.latin1(); |
| const char *end = parseCoord(start, convertedNumber); |
| m_valueInSpecifiedUnits = convertedNumber; |
| |
| unsigned int diff = end - start; |
| if(diff < valueAsQString.length()) |
| { |
| if(valueAsQString.endsWith(UnitText[SVG_LENGTHTYPE_PX])) |
| m_unitType = SVG_LENGTHTYPE_PX; |
| else if(valueAsQString.endsWith(UnitText[SVG_LENGTHTYPE_CM])) |
| m_unitType = SVG_LENGTHTYPE_CM; |
| else if(valueAsQString.endsWith(UnitText[SVG_LENGTHTYPE_PC])) |
| m_unitType = SVG_LENGTHTYPE_PC; |
| else if(valueAsQString.endsWith(UnitText[SVG_LENGTHTYPE_MM])) |
| m_unitType = SVG_LENGTHTYPE_MM; |
| else if(valueAsQString.endsWith(UnitText[SVG_LENGTHTYPE_IN])) |
| m_unitType = SVG_LENGTHTYPE_IN; |
| else if(valueAsQString.endsWith(UnitText[SVG_LENGTHTYPE_PT])) |
| m_unitType = SVG_LENGTHTYPE_PT; |
| else if(valueAsQString.endsWith(UnitText[SVG_LENGTHTYPE_PERCENTAGE])) |
| m_unitType = SVG_LENGTHTYPE_PERCENTAGE; |
| else if(valueAsQString.endsWith(UnitText[SVG_LENGTHTYPE_EMS])) |
| m_unitType = SVG_LENGTHTYPE_EMS; |
| else if(valueAsQString.endsWith(UnitText[SVG_LENGTHTYPE_EXS])) |
| m_unitType = SVG_LENGTHTYPE_EXS; |
| else if(valueAsQString.isEmpty()) |
| m_unitType = SVG_LENGTHTYPE_NUMBER; |
| else |
| m_unitType = SVG_LENGTHTYPE_UNKNOWN; |
| } |
| else |
| m_unitType = SVG_LENGTHTYPE_PX; |
| |
| updateValue(); |
| } |
| |
| KDOM::DOMStringImpl *SVGLengthImpl::valueAsString() const |
| { |
| return new KDOM::DOMStringImpl(QString::number(m_valueInSpecifiedUnits) + UnitText[m_unitType]); |
| } |
| |
| void SVGLengthImpl::newValueSpecifiedUnits(unsigned short unitType, float valueInSpecifiedUnits) |
| { |
| m_valueInSpecifiedUnits = valueInSpecifiedUnits; |
| m_unitType = unitType; |
| updateValue(); |
| } |
| |
| void SVGLengthImpl::convertToSpecifiedUnits(unsigned short unitType) |
| { |
| m_unitType = unitType; |
| updateValueInSpecifiedUnits(); |
| } |
| |
| double SVGLengthImpl::dpi() const |
| { |
| /* FIXME: DPI detection |
| if(context && context->ownerDoc()) |
| { |
| if(mode == LM_WIDTH) |
| return 25.4 * context->ownerDoc()->screenPixelsPerMillimeterX(); |
| else if(mode == LM_HEIGHT) |
| return 25.4 * context->ownerDoc()->screenPixelsPerMillimeterY(); |
| else if(mode == LM_OTHER) |
| return 25.4 * context->ownerDoc()->screenPixelsPerMillimeterX(); |
| } |
| */ |
| |
| return 90.0; |
| } |
| |
| void SVGLengthImpl::updateValue() |
| { |
| 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) |
| { |
| /* FIXME: EMS/EXS handling |
| KRenderingStyle *style = context->style(); |
| KCFontProperties *fontProperites = style->fontProperties(); |
| |
| bool sizeLocal = (style->getFontSize() != -1); |
| bool familyLocal = (style->getFontFamily() && style->getFontFamily()->getFirst()); |
| |
| SVGStylableImpl *parentStyle = 0; |
| if((!sizeLocal || !familyLocal) && context) |
| parentStyle = dynamic_cast<SVGStylableImpl *>(context->ownerDoc()->getElementFromHandle(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(unitType == SVG_LENGTHTYPE_EMS) |
| value = valueInSpecifiedUnits * useSize; |
| else |
| { |
| // Easiest way, use qfont (Niko) |
| QFont font(useFont); |
| font.setPixelSize(static_cast<int>(useSize)); |
| |
| QFontMetrics fm(font); |
| value = valueInSpecifiedUnits * fm.boundingRect('x').height(); |
| } |
| } |
| |
| break;*/ |
| } |
| } |
| |
| if(m_context) |
| m_context->notifyAttributeChange(); |
| } |
| |
| bool SVGLengthImpl::updateValueInSpecifiedUnits() |
| { |
| if(m_unitType == SVG_LENGTHTYPE_UNKNOWN) |
| return false; |
| |
| switch(m_unitType) |
| { |
| case SVG_LENGTHTYPE_PERCENTAGE: |
| kdError() << "updateValueInSpecifiedUnits() SVG_LENGTHTYPE_PERCENTAGE - UNSUPPORTED! Please report!" << endl; |
| return false; |
| case SVG_LENGTHTYPE_EMS: |
| kdError() << "updateValueInSpecifiedUnits() SVG_LENGTHTYPE_EMS - UNSUPPORTED! Please report!" << endl; |
| return false; |
| case SVG_LENGTHTYPE_EXS: |
| kdError() << "updateValueInSpecifiedUnits() SVG_LENGTHTYPE_EXS - UNSUPPORTED! Please report!" << endl; |
| return false; |
| 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; |
| }; |
| |
| if(m_context) |
| m_context->notifyAttributeChange(); |
| |
| return true; |
| } |
| |
| bool SVGLengthImpl::bboxRelative() const |
| { |
| return m_bboxRelative; |
| } |
| |
| void SVGLengthImpl::setBboxRelative(bool relative) |
| { |
| m_bboxRelative = relative; |
| } |
| |
| const SVGStyledElementImpl *SVGLengthImpl::context() const |
| { |
| return m_context; |
| } |
| |
| void SVGLengthImpl::setContext(const SVGStyledElementImpl *context) |
| { |
| m_context = context; |
| } |
| |
| // vim:ts=4:noet |
