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/*
Copyright (C) 2007 Rob Buis <buis@kde.org>
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 "Document.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_contextElement(contextElement)
, m_viewBox(this, SVGNames::viewBoxAttr)
, m_preserveAspectRatio(this, SVGNames::preserveAspectRatioAttr, SVGPreserveAspectRatio::create())
, m_transform(SVGTransformList::create(SVGNames::transformAttr))
{
}
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(m_contextElement->document(), 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->document()->getElementById(m_viewTargetString));
}
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(m_contextElement->document(), 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)
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