khtml/svg/SVGFilterPrimitiveStandardAttributes.cpp

   1 /*
   2     Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
   3                   2004, 2005, 2006 Rob Buis <buis@kde.org>
   4
   5     This file is part of the KDE project
   6
   7     This library is free software; you can redistribute it and/or
   8     modify it under the terms of the GNU Library General Public
   9     License as published by the Free Software Foundation; either
  10     version 2 of the License, or (at your option) any later version.
  11
  12     This library is distributed in the hope that it will be useful,
  13     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15     Library General Public License for more details.
  16
  17     You should have received a copy of the GNU Library General Public License
  18     along with this library; see the file COPYING.LIB.  If not, write to
  19     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20     Boston, MA 02110-1301, USA.
  21 */
  22
  23 #include "config.h"
  24
  25 #if ENABLE(SVG) && ENABLE(SVG_FILTERS)
  26 #include "SVGFilterPrimitiveStandardAttributes.h"
  27
  28 #include "SVGFilterElement.h"
  29 #include "SVGFilterEffect.h"
  30 #include "SVGLength.h"
  31 #include "SVGNames.h"
  32 #include "SVGStyledElement.h"
  33 #include "SVGUnitTypes.h"
  34
  35 namespace WebCore {
  36
  37 SVGFilterPrimitiveStandardAttributes::SVGFilterPrimitiveStandardAttributes(const QualifiedName& tagName, Document* doc)
  38     : SVGStyledElement(tagName, doc)
  39     , m_x(this, LengthModeWidth)
  40     , m_y(this, LengthModeHeight)
  41     , m_width(this, LengthModeWidth)
  42     , m_height(this, LengthModeHeight)
  43 {
  44     // Spec: If the attribute is not specified, the effect is as if a value of "0%" were specified.
  45     setXBaseValue(SVGLength(this, LengthModeWidth, "0%"));
  46     setYBaseValue(SVGLength(this, LengthModeHeight, "0%"));
  47
  48     // Spec: If the attribute is not specified, the effect is as if a value of "100%" were specified.
  49     setWidthBaseValue(SVGLength(this, LengthModeWidth, "100%"));
  50     setHeightBaseValue(SVGLength(this, LengthModeHeight, "100%"));
  51 }
  52
  53 SVGFilterPrimitiveStandardAttributes::~SVGFilterPrimitiveStandardAttributes()
  54 {
  55 }
  56
  57 ANIMATED_PROPERTY_DEFINITIONS(SVGFilterPrimitiveStandardAttributes, SVGLength, Length, length, X, x, SVGNames::xAttr, m_x)
  58 ANIMATED_PROPERTY_DEFINITIONS(SVGFilterPrimitiveStandardAttributes, SVGLength, Length, length, Y, y, SVGNames::yAttr, m_y)
  59 ANIMATED_PROPERTY_DEFINITIONS(SVGFilterPrimitiveStandardAttributes, SVGLength, Length, length, Width, width, SVGNames::widthAttr, m_width)
  60 ANIMATED_PROPERTY_DEFINITIONS(SVGFilterPrimitiveStandardAttributes, SVGLength, Length, length, Height, height, SVGNames::heightAttr, m_height)
  61 ANIMATED_PROPERTY_DEFINITIONS(SVGFilterPrimitiveStandardAttributes, String, String, string, Result, result, SVGNames::resultAttr, m_result)
  62
  63 void SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(MappedAttribute* attr)
  64 {
  65     const AtomicString& value = attr->value();
  66     if (attr->name() == SVGNames::xAttr)
  67         setXBaseValue(SVGLength(this, LengthModeWidth, value));
  68     else if (attr->name() == SVGNames::yAttr)
  69         setYBaseValue(SVGLength(this, LengthModeHeight, value));
  70     else if (attr->name() == SVGNames::widthAttr)
  71         setWidthBaseValue(SVGLength(this, LengthModeWidth, value));
  72     else if (attr->name() == SVGNames::heightAttr)
  73         setHeightBaseValue(SVGLength(this, LengthModeHeight, value));
  74     else if (attr->name() == SVGNames::resultAttr)
  75         setResultBaseValue(value);
  76     else
  77         return SVGStyledElement::parseMappedAttribute(attr);
  78 }
  79
  80 void SVGFilterPrimitiveStandardAttributes::setStandardAttributes(SVGFilterEffect* filterEffect) const
  81 {
  82     ASSERT(filterEffect);
  83     if (!filterEffect)
  84         return;
  85
  86     ASSERT(filterEffect->filter());
  87
  88     float _x, _y, _width, _height;
  89
  90     if (filterEffect->filter()->effectBoundingBoxMode()) {
  91         _x = x().valueAsPercentage();
  92         _y = y().valueAsPercentage();
  93         _width = width().valueAsPercentage();
  94         _height = height().valueAsPercentage();
  95     } else {
  96         // We need to resolve any percentages in filter rect space.
  97         if (x().unitType() == LengthTypePercentage) {
  98             filterEffect->setXBoundingBoxMode(true);
  99             _x = x().valueAsPercentage();
 100         } else {
 101             filterEffect->setXBoundingBoxMode(false);
 102             _x = x().value();
 103         }
 104
 105         if (y().unitType() == LengthTypePercentage) {
 106             filterEffect->setYBoundingBoxMode(true);
 107             _y = y().valueAsPercentage();
 108         } else {
 109             filterEffect->setYBoundingBoxMode(false);
 110             _y = y().value();
 111         }
 112
 113         if (width().unitType() == LengthTypePercentage) {
 114             filterEffect->setWidthBoundingBoxMode(true);
 115             _width = width().valueAsPercentage();
 116         } else {
 117             filterEffect->setWidthBoundingBoxMode(false);
 118             _width = width().value();
 119         }
 120
 121         if (height().unitType() == LengthTypePercentage) {
 122             filterEffect->setHeightBoundingBoxMode(true);
 123             _height = height().valueAsPercentage();
 124         } else {
 125             filterEffect->setHeightBoundingBoxMode(false);
 126             _height = height().value();
 127         }
 128     }
 129
 130     filterEffect->setSubRegion(FloatRect(_x, _y, _width, _height));
 131     filterEffect->setResult(result());
 132 }
 133
 134 }
 135
 136 #endif // ENABLE(SVG)
 137
 138 // vim:ts=4:noet