| /* |
| Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org> |
| 2004, 2005, 2006, 2007 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., 51 Franklin Street, Fifth Floor, |
| Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| |
| #if ENABLE(SVG) |
| #include "SVGPreserveAspectRatio.h" |
| |
| #include "SVGParserUtilities.h" |
| #include "SVGSVGElement.h" |
| |
| namespace WebCore { |
| |
| SVGPreserveAspectRatio::SVGPreserveAspectRatio() |
| : RefCounted<SVGPreserveAspectRatio>() |
| , m_align(SVG_PRESERVEASPECTRATIO_XMIDYMID) |
| , m_meetOrSlice(SVG_MEETORSLICE_MEET) |
| { |
| // FIXME: Should the two values default to UNKNOWN instead? |
| } |
| |
| SVGPreserveAspectRatio::~SVGPreserveAspectRatio() |
| { |
| } |
| |
| void SVGPreserveAspectRatio::setAlign(unsigned short align) |
| { |
| m_align = align; |
| } |
| |
| unsigned short SVGPreserveAspectRatio::align() const |
| { |
| return m_align; |
| } |
| |
| void SVGPreserveAspectRatio::setMeetOrSlice(unsigned short meetOrSlice) |
| { |
| m_meetOrSlice = meetOrSlice; |
| } |
| |
| unsigned short SVGPreserveAspectRatio::meetOrSlice() const |
| { |
| return m_meetOrSlice; |
| } |
| |
| bool SVGPreserveAspectRatio::parsePreserveAspectRatio(const UChar*& currParam, const UChar* end, bool validate) |
| { |
| SVGPreserveAspectRatioType align = SVG_PRESERVEASPECTRATIO_NONE; |
| SVGMeetOrSliceType meetOrSlice = SVG_MEETORSLICE_MEET; |
| bool ret = false; |
| |
| if (!skipOptionalSpaces(currParam, end)) |
| goto bail_out; |
| |
| if (*currParam == 'd') { |
| if (!skipString(currParam, end, "defer")) |
| goto bail_out; |
| // FIXME: We just ignore the "defer" here. |
| if (!skipOptionalSpaces(currParam, end)) |
| goto bail_out; |
| } |
| |
| if (*currParam == 'n') { |
| if (!skipString(currParam, end, "none")) |
| goto bail_out; |
| skipOptionalSpaces(currParam, end); |
| } else if (*currParam == 'x') { |
| if ((end - currParam) < 8) |
| goto bail_out; |
| if (currParam[1] != 'M' || currParam[4] != 'Y' || currParam[5] != 'M') |
| goto bail_out; |
| if (currParam[2] == 'i') { |
| if (currParam[3] == 'n') { |
| if (currParam[6] == 'i') { |
| if (currParam[7] == 'n') |
| align = SVG_PRESERVEASPECTRATIO_XMINYMIN; |
| else if (currParam[7] == 'd') |
| align = SVG_PRESERVEASPECTRATIO_XMINYMID; |
| else |
| goto bail_out; |
| } else if (currParam[6] == 'a' && currParam[7] == 'x') |
| align = SVG_PRESERVEASPECTRATIO_XMINYMAX; |
| else |
| goto bail_out; |
| } else if (currParam[3] == 'd') { |
| if (currParam[6] == 'i') { |
| if (currParam[7] == 'n') |
| align = SVG_PRESERVEASPECTRATIO_XMIDYMIN; |
| else if (currParam[7] == 'd') |
| align = SVG_PRESERVEASPECTRATIO_XMIDYMID; |
| else |
| goto bail_out; |
| } else if (currParam[6] == 'a' && currParam[7] == 'x') |
| align = SVG_PRESERVEASPECTRATIO_XMIDYMAX; |
| else |
| goto bail_out; |
| } else |
| goto bail_out; |
| } else if (currParam[2] == 'a' && currParam[3] == 'x') { |
| if (currParam[6] == 'i') { |
| if (currParam[7] == 'n') |
| align = SVG_PRESERVEASPECTRATIO_XMAXYMIN; |
| else if (currParam[7] == 'd') |
| align = SVG_PRESERVEASPECTRATIO_XMAXYMID; |
| else |
| goto bail_out; |
| } else if (currParam[6] == 'a' && currParam[7] == 'x') |
| align = SVG_PRESERVEASPECTRATIO_XMAXYMAX; |
| else |
| goto bail_out; |
| } else |
| goto bail_out; |
| currParam += 8; |
| skipOptionalSpaces(currParam, end); |
| } else |
| goto bail_out; |
| |
| if (currParam < end) { |
| if (*currParam == 'm') { |
| if (!skipString(currParam, end, "meet")) |
| goto bail_out; |
| skipOptionalSpaces(currParam, end); |
| } else if (*currParam == 's') { |
| if (!skipString(currParam, end, "slice")) |
| goto bail_out; |
| skipOptionalSpaces(currParam, end); |
| if (align != SVG_PRESERVEASPECTRATIO_NONE) |
| meetOrSlice = SVG_MEETORSLICE_SLICE; |
| } |
| } |
| |
| if (end != currParam && validate) { |
| bail_out: |
| // FIXME: Should the two values be set to UNKNOWN instead? |
| align = SVG_PRESERVEASPECTRATIO_NONE; |
| meetOrSlice = SVG_MEETORSLICE_MEET; |
| } else |
| ret = true; |
| |
| if (m_align == align && m_meetOrSlice == meetOrSlice) |
| return ret; |
| |
| m_align = align; |
| m_meetOrSlice = meetOrSlice; |
| return ret; |
| } |
| |
| AffineTransform SVGPreserveAspectRatio::getCTM(double logicX, double logicY, |
| double logicWidth, double logicHeight, |
| double /*physX*/, double /*physY*/, |
| double physWidth, double physHeight) |
| { |
| AffineTransform temp; |
| |
| if (align() == SVG_PRESERVEASPECTRATIO_UNKNOWN) |
| return temp; |
| |
| double vpar = logicWidth / logicHeight; |
| double svgar = physWidth / physHeight; |
| |
| if (align() == SVG_PRESERVEASPECTRATIO_NONE) { |
| temp.scale(physWidth / logicWidth, physHeight / logicHeight); |
| temp.translate(-logicX, -logicY); |
| } else if (vpar < svgar && (meetOrSlice() == SVG_MEETORSLICE_MEET) || vpar >= svgar && (meetOrSlice() == SVG_MEETORSLICE_SLICE)) { |
| temp.scale(physHeight / logicHeight, physHeight / logicHeight); |
| |
| if (align() == SVG_PRESERVEASPECTRATIO_XMINYMIN || align() == SVG_PRESERVEASPECTRATIO_XMINYMID || align() == SVG_PRESERVEASPECTRATIO_XMINYMAX) |
| temp.translate(-logicX, -logicY); |
| else if (align() == SVG_PRESERVEASPECTRATIO_XMIDYMIN || align() == SVG_PRESERVEASPECTRATIO_XMIDYMID || align() == SVG_PRESERVEASPECTRATIO_XMIDYMAX) |
| temp.translate(-logicX - (logicWidth - physWidth * logicHeight / physHeight) / 2, -logicY); |
| else |
| temp.translate(-logicX - (logicWidth - physWidth * logicHeight / physHeight), -logicY); |
| } else { |
| temp.scale(physWidth / logicWidth, physWidth / logicWidth); |
| |
| if (align() == SVG_PRESERVEASPECTRATIO_XMINYMIN || align() == SVG_PRESERVEASPECTRATIO_XMIDYMIN || align() == SVG_PRESERVEASPECTRATIO_XMAXYMIN) |
| temp.translate(-logicX, -logicY); |
| else if (align() == SVG_PRESERVEASPECTRATIO_XMINYMID || align() == SVG_PRESERVEASPECTRATIO_XMIDYMID || align() == SVG_PRESERVEASPECTRATIO_XMAXYMID) |
| temp.translate(-logicX, -logicY - (logicHeight - physHeight * logicWidth / physWidth) / 2); |
| else |
| temp.translate(-logicX, -logicY - (logicHeight - physHeight * logicWidth / physWidth)); |
| } |
| |
| return temp; |
| } |
| |
| } |
| |
| #endif // ENABLE(SVG) |
