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/*
Copyright (C) 2008 Eric Seidel <eric@webkit.org>
Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
2004, 2005, 2007 Rob Buis <buis@kde.org>
Copyright (C) 2005, 2006 Apple Computer, Inc.
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 "CSSInheritedValue.h"
#include "CSSInitialValue.h"
#include "CSSParser.h"
#include "CSSProperty.h"
#include "CSSPropertyNames.h"
#include "CSSQuirkPrimitiveValue.h"
#include "CSSValueKeywords.h"
#include "CSSValueList.h"
#include "SVGPaint.h"
using namespace std;
namespace WebCore {
bool CSSParser::parseSVGValue(int propId, bool important)
{
Value* value = m_valueList->current();
if (!value)
return false;
int id = value->id;
bool valid_primitive = false;
RefPtr<CSSValue> parsedValue;
switch (propId) {
/* The comment to the right defines all valid value of these
* properties as defined in SVG 1.1, Appendix N. Property index */
case CSSPropertyAlignmentBaseline:
// auto | baseline | before-edge | text-before-edge | middle |
// central | after-edge | text-after-edge | ideographic | alphabetic |
// hanging | mathematical | inherit
if (id == CSSValueAuto || id == CSSValueBaseline || id == CSSValueMiddle ||
(id >= CSSValueBeforeEdge && id <= CSSValueMathematical))
valid_primitive = true;
break;
case CSSPropertyBaselineShift:
// baseline | super | sub | <percentage> | <length> | inherit
if (id == CSSValueBaseline || id == CSSValueSub ||
id >= CSSValueSuper)
valid_primitive = true;
else
valid_primitive = validUnit(value, FLength|FPercent, false);
break;
case CSSPropertyDominantBaseline:
// auto | use-script | no-change | reset-size | ideographic |
// alphabetic | hanging | mathematical | central | middle |
// text-after-edge | text-before-edge | inherit
if (id == CSSValueAuto || id == CSSValueMiddle ||
(id >= CSSValueUseScript && id <= CSSValueResetSize) ||
(id >= CSSValueCentral && id <= CSSValueMathematical))
valid_primitive = true;
break;
case CSSPropertyEnableBackground:
// accumulate | new [x] [y] [width] [height] | inherit
if (id == CSSValueAccumulate) // TODO : new
valid_primitive = true;
break;
case CSSPropertyMarkerStart:
case CSSPropertyMarkerMid:
case CSSPropertyMarkerEnd:
case CSSPropertyMask:
if (id == CSSValueNone)
valid_primitive = true;
else if (value->unit == CSSPrimitiveValue::CSS_URI) {
parsedValue = new CSSPrimitiveValue(value->string, CSSPrimitiveValue::CSS_URI);
if (parsedValue)
m_valueList->next();
}
break;
case CSSPropertyClipRule: // nonzero | evenodd | inherit
case CSSPropertyFillRule:
if (id == CSSValueNonzero || id == CSSValueEvenodd)
valid_primitive = true;
break;
case CSSPropertyStrokeMiterlimit: // <miterlimit> | inherit
valid_primitive = validUnit(value, FNumber|FNonNeg, false);
break;
case CSSPropertyStrokeLinejoin: // miter | round | bevel | inherit
if (id == CSSValueMiter || id == CSSValueRound || id == CSSValueBevel)
valid_primitive = true;
break;
case CSSPropertyStrokeLinecap: // butt | round | square | inherit
if (id == CSSValueButt || id == CSSValueRound || id == CSSValueSquare)
valid_primitive = true;
break;
case CSSPropertyStrokeOpacity: // <opacity-value> | inherit
case CSSPropertyFillOpacity:
case CSSPropertyStopOpacity:
case CSSPropertyFloodOpacity:
valid_primitive = (!id && validUnit(value, FNumber|FPercent, false));
break;
case CSSPropertyShapeRendering:
// auto | optimizeSpeed | crispEdges | geometricPrecision | inherit
if (id == CSSValueAuto || id == CSSValueOptimizespeed ||
id == CSSValueCrispedges || id == CSSValueGeometricprecision)
valid_primitive = true;
break;
case CSSPropertyTextRendering: // auto | optimizeSpeed | optimizeLegibility | geometricPrecision | inherit
if (id == CSSValueAuto || id == CSSValueOptimizespeed || id == CSSValueOptimizelegibility ||
id == CSSValueGeometricprecision)
valid_primitive = true;
break;
case CSSPropertyImageRendering: // auto | optimizeSpeed |
case CSSPropertyColorRendering: // optimizeQuality | inherit
if (id == CSSValueAuto || id == CSSValueOptimizespeed ||
id == CSSValueOptimizequality)
valid_primitive = true;
break;
case CSSPropertyColorProfile: // auto | sRGB | <name> | <uri> inherit
if (id == CSSValueAuto || id == CSSValueSrgb)
valid_primitive = true;
break;
case CSSPropertyColorInterpolation: // auto | sRGB | linearRGB | inherit
case CSSPropertyColorInterpolationFilters:
if (id == CSSValueAuto || id == CSSValueSrgb || id == CSSValueLinearrgb)
valid_primitive = true;
break;
/* Start of supported CSS properties with validation. This is needed for parseShortHand to work
* correctly and allows optimization in applyRule(..)
*/
case CSSPropertyPointerEvents:
// none | visiblePainted | visibleFill | visibleStroke | visible |
// painted | fill | stroke | none | all | inherit
if (id == CSSValueVisible || id == CSSValueNone ||
(id >= CSSValueVisiblepainted && id <= CSSValueAll))
valid_primitive = true;
break;
case CSSPropertyTextAnchor: // start | middle | end | inherit
if (id == CSSValueStart || id == CSSValueMiddle || id == CSSValueEnd)
valid_primitive = true;
break;
case CSSPropertyGlyphOrientationVertical: // auto | <angle> | inherit
if (id == CSSValueAuto) {
valid_primitive = true;
break;
}
/* fallthrough intentional */
case CSSPropertyGlyphOrientationHorizontal: // <angle> (restricted to _deg_ per SVG 1.1 spec) | inherit
if (value->unit == CSSPrimitiveValue::CSS_DEG || value->unit == CSSPrimitiveValue::CSS_NUMBER) {
parsedValue = new CSSPrimitiveValue(value->fValue, CSSPrimitiveValue::CSS_DEG);
if (parsedValue)
m_valueList->next();
}
break;
case CSSPropertyFill: // <paint> | inherit
case CSSPropertyStroke: // <paint> | inherit
{
if (id == CSSValueNone)
parsedValue = new SVGPaint(SVGPaint::SVG_PAINTTYPE_NONE);
else if (id == CSSValueCurrentcolor)
parsedValue = new SVGPaint(SVGPaint::SVG_PAINTTYPE_CURRENTCOLOR);
else if (value->unit == CSSPrimitiveValue::CSS_URI) {
RGBA32 c = Color::transparent;
if (m_valueList->next() && parseColorFromValue(m_valueList->current(), c, true)) {
parsedValue = new SVGPaint(value->string, c);
} else
parsedValue = new SVGPaint(SVGPaint::SVG_PAINTTYPE_URI, value->string);
} else
parsedValue = parseSVGPaint();
if (parsedValue)
m_valueList->next();
}
break;
case CSSPropertyColor: // <color> | inherit
if ((id >= CSSValueAqua && id <= CSSValueWindowtext) ||
(id >= CSSValueAliceblue && id <= CSSValueYellowgreen))
parsedValue = new SVGColor(value->string);
else
parsedValue = parseSVGColor();
if (parsedValue)
m_valueList->next();
break;
case CSSPropertyStopColor: // TODO : icccolor
case CSSPropertyFloodColor:
case CSSPropertyLightingColor:
if ((id >= CSSValueAqua && id <= CSSValueWindowtext) ||
(id >= CSSValueAliceblue && id <= CSSValueYellowgreen))
parsedValue = new SVGColor(value->string);
else if (id == CSSValueCurrentcolor)
parsedValue = new SVGColor(SVGColor::SVG_COLORTYPE_CURRENTCOLOR);
else // TODO : svgcolor (iccColor)
parsedValue = parseSVGColor();
if (parsedValue)
m_valueList->next();
break;
case CSSPropertyWritingMode:
// lr-tb | rl_tb | tb-rl | lr | rl | tb | inherit
if (id >= CSSValueLrTb && id <= CSSValueTb)
valid_primitive = true;
break;
case CSSPropertyStrokeWidth: // <length> | inherit
case CSSPropertyStrokeDashoffset:
valid_primitive = validUnit(value, FLength | FPercent, false);
break;
case CSSPropertyStrokeDasharray: // none | <dasharray> | inherit
if (id == CSSValueNone)
valid_primitive = true;
else
parsedValue = parseSVGStrokeDasharray();
break;
case CSSPropertyKerning: // auto | normal | <length> | inherit
if (id == CSSValueAuto || id == CSSValueNormal)
valid_primitive = true;
else
valid_primitive = validUnit(value, FLength, false);
break;
case CSSPropertyClipPath: // <uri> | none | inherit
case CSSPropertyFilter:
if (id == CSSValueNone)
valid_primitive = true;
else if (value->unit == CSSPrimitiveValue::CSS_URI) {
parsedValue = new CSSPrimitiveValue(value->string, (CSSPrimitiveValue::UnitTypes) value->unit);
if (parsedValue)
m_valueList->next();
}
break;
/* shorthand properties */
case CSSPropertyMarker:
{
ShorthandScope scope(this, propId);
m_implicitShorthand = true;
if (!parseValue(CSSPropertyMarkerStart, important))
return false;
if (m_valueList->current()) {
rollbackLastProperties(1);
return false;
}
CSSValue* value = m_parsedProperties[m_numParsedProperties - 1]->value();
addProperty(CSSPropertyMarkerMid, value, important);
addProperty(CSSPropertyMarkerEnd, value, important);
m_implicitShorthand = false;
return true;
}
default:
// If you crash here, it's because you added a css property and are not handling it
// in either this switch statement or the one in CSSParser::parseValue
ASSERT_WITH_MESSAGE(0, "unimplemented propertyID: %d", propId);
return false;
}
if (valid_primitive) {
if (id != 0)
parsedValue = new CSSPrimitiveValue(id);
else if (value->unit == CSSPrimitiveValue::CSS_STRING)
parsedValue = new CSSPrimitiveValue(value->string, (CSSPrimitiveValue::UnitTypes) value->unit);
else if (value->unit >= CSSPrimitiveValue::CSS_NUMBER && value->unit <= CSSPrimitiveValue::CSS_KHZ)
parsedValue = new CSSPrimitiveValue(value->fValue, (CSSPrimitiveValue::UnitTypes) value->unit);
else if (value->unit >= Value::Q_EMS)
parsedValue = new CSSQuirkPrimitiveValue(value->fValue, CSSPrimitiveValue::CSS_EMS);
m_valueList->next();
}
if (!parsedValue || (m_valueList->current() && !inShorthand()))
return false;
addProperty(propId, parsedValue.release(), important);
return true;
}
PassRefPtr<CSSValue> CSSParser::parseSVGStrokeDasharray()
{
CSSValueList* ret = new CSSValueList;
Value* value = m_valueList->current();
bool valid_primitive = true;
while (value) {
valid_primitive = validUnit(value, FLength | FPercent |FNonNeg, false);
if (!valid_primitive)
break;
if (value->id != 0)
ret->append(new CSSPrimitiveValue(value->id));
else if (value->unit >= CSSPrimitiveValue::CSS_NUMBER && value->unit <= CSSPrimitiveValue::CSS_KHZ)
ret->append(new CSSPrimitiveValue(value->fValue, (CSSPrimitiveValue::UnitTypes) value->unit));
value = m_valueList->next();
if (value && value->unit == Value::Operator && value->iValue == ',')
value = m_valueList->next();
}
if (!valid_primitive) {
delete ret;
ret = 0;
}
return ret;
}
PassRefPtr<CSSValue> CSSParser::parseSVGPaint()
{
RGBA32 c = Color::transparent;
if (!parseColorFromValue(m_valueList->current(), c, true))
return new SVGPaint();
return new SVGPaint(Color(c));
}
PassRefPtr<CSSValue> CSSParser::parseSVGColor()
{
RGBA32 c = Color::transparent;
if (!parseColorFromValue(m_valueList->current(), c, true))
return 0;
return new SVGColor(Color(c));
}
}
#endif // ENABLE(SVG)
// vim:ts=4:noet
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