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Diffstat (limited to 'WebCore/svg/SVGViewSpec.cpp')
| -rw-r--r-- | WebCore/svg/SVGViewSpec.cpp | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/WebCore/svg/SVGViewSpec.cpp b/WebCore/svg/SVGViewSpec.cpp new file mode 100644 index 0000000..d628d70 --- /dev/null +++ b/WebCore/svg/SVGViewSpec.cpp @@ -0,0 +1,178 @@ +/* + Copyright (C) 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 "SVGViewSpec.h" + +#include "PlatformString.h" +#include "SVGParserUtilities.h" +#include "SVGPreserveAspectRatio.h" +#include "SVGSVGElement.h" +#include "SVGTransformList.h" +#include "SVGTransformable.h" + +namespace WebCore { + +SVGViewSpec::SVGViewSpec(const SVGSVGElement* contextElement) + : SVGFitToViewBox() + , SVGZoomAndPan() + , m_transform(SVGTransformList::create(SVGNames::transformAttr)) + , m_contextElement(contextElement) +{ +} + +SVGViewSpec::~SVGViewSpec() +{ +} + +void SVGViewSpec::setTransform(const String& transform) +{ + SVGTransformable::parseTransformAttribute(m_transform.get(), transform); +} + +void SVGViewSpec::setViewBoxString(const String& viewBox) +{ + float x, y, w, h; + const UChar* c = viewBox.characters(); + const UChar* end = c + viewBox.length(); + if (!parseViewBox(c, end, x, y, w, h, false)) + return; + setViewBoxBaseValue(FloatRect(x, y, w, h)); +} + +void SVGViewSpec::setPreserveAspectRatioString(const String& preserve) +{ + const UChar* c = preserve.characters(); + const UChar* end = c + preserve.length(); + preserveAspectRatioBaseValue()->parsePreserveAspectRatio(c, end); +} + +void SVGViewSpec::setViewTargetString(const String& viewTargetString) +{ + m_viewTargetString = viewTargetString; +} + +SVGElement* SVGViewSpec::viewTarget() const +{ + return static_cast<SVGElement*>(m_contextElement->ownerDocument()->getElementById(m_viewTargetString)); +} + +const SVGElement* SVGViewSpec::contextElement() const +{ + return m_contextElement; +} + +static const UChar svgViewSpec[] = {'s','v','g','V', 'i', 'e', 'w'}; +static const UChar viewBoxSpec[] = {'v', 'i', 'e', 'w', 'B', 'o', 'x'}; +static const UChar preserveAspectRatioSpec[] = {'p', 'r', 'e', 's', 'e', 'r', 'v', 'e', 'A', 's', 'p', 'e', 'c', 't', 'R', 'a', 't', 'i', 'o'}; +static const UChar transformSpec[] = {'t', 'r', 'a', 'n', 's', 'f', 'o', 'r', 'm'}; +static const UChar zoomAndPanSpec[] = {'z', 'o', 'o', 'm', 'A', 'n', 'd', 'P', 'a', 'n'}; +static const UChar viewTargetSpec[] = {'v', 'i', 'e', 'w', 'T', 'a', 'r', 'g', 'e', 't'}; + +bool SVGViewSpec::parseViewSpec(const String& viewSpec) +{ + const UChar* currViewSpec = viewSpec.characters(); + const UChar* end = currViewSpec + viewSpec.length(); + + if (currViewSpec >= end) + return false; + + if (!skipString(currViewSpec, end, svgViewSpec, sizeof(svgViewSpec) / sizeof(UChar))) + return false; + + if (currViewSpec >= end || *currViewSpec != '(' ) + return false; + currViewSpec++; + + while (currViewSpec < end && *currViewSpec != ')') { + if (*currViewSpec == 'v') { + if (skipString(currViewSpec, end, viewBoxSpec, sizeof(viewBoxSpec) / sizeof(UChar))) { + if (currViewSpec >= end || *currViewSpec != '(') + return false; + currViewSpec++; + float x, y, w, h; + if (!parseViewBox(currViewSpec, end, x, y, w, h, false)) + return false; + setViewBoxBaseValue(FloatRect(x, y, w, h)); + if (currViewSpec >= end || *currViewSpec != ')') + return false; + currViewSpec++; + } else if (skipString(currViewSpec, end, viewTargetSpec, sizeof(viewTargetSpec) / sizeof(UChar))) { + if (currViewSpec >= end || *currViewSpec != '(') + return false; + const UChar* viewTargetStart = ++currViewSpec; + while (currViewSpec < end && *currViewSpec != ')') + currViewSpec++; + if (currViewSpec >= end) + return false; + setViewTargetString(String(viewTargetStart, currViewSpec - viewTargetStart)); + currViewSpec++; + } else + return false; + } else if (*currViewSpec == 'z') { + if (!skipString(currViewSpec, end, zoomAndPanSpec, sizeof(zoomAndPanSpec) / sizeof(UChar))) + return false; + if (currViewSpec >= end || *currViewSpec != '(') + return false; + currViewSpec++; + if (!parseZoomAndPan(currViewSpec, end)) + return false; + if (currViewSpec >= end || *currViewSpec != ')') + return false; + currViewSpec++; + } else if (*currViewSpec == 'p') { + if (!skipString(currViewSpec, end, preserveAspectRatioSpec, sizeof(preserveAspectRatioSpec) / sizeof(UChar))) + return false; + if (currViewSpec >= end || *currViewSpec != '(') + return false; + currViewSpec++; + if (!preserveAspectRatioBaseValue()->parsePreserveAspectRatio(currViewSpec, end, false)) + return false; + if (currViewSpec >= end || *currViewSpec != ')') + return false; + currViewSpec++; + } else if (*currViewSpec == 't') { + if (!skipString(currViewSpec, end, transformSpec, sizeof(transformSpec) / sizeof(UChar))) + return false; + if (currViewSpec >= end || *currViewSpec != '(') + return false; + currViewSpec++; + SVGTransformable::parseTransformAttribute(m_transform.get(), currViewSpec, end); + if (currViewSpec >= end || *currViewSpec != ')') + return false; + currViewSpec++; + } else + return false; + + if (currViewSpec < end && *currViewSpec == ';') + currViewSpec++; + } + + if (currViewSpec >= end || *currViewSpec != ')') + return false; + + return true; +} + +} + +#endif // ENABLE(SVG) |