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      1 /*
      2  * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis (at) kde.org>
      4  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
      5  *
      6  * This library is free software; you can redistribute it and/or
      7  * modify it under the terms of the GNU Library General Public
      8  * License as published by the Free Software Foundation; either
      9  * version 2 of the License, or (at your option) any later version.
     10  *
     11  * This library is distributed in the hope that it will be useful,
     12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14  * Library General Public License for more details.
     15  *
     16  * You should have received a copy of the GNU Library General Public License
     17  * along with this library; see the file COPYING.LIB.  If not, write to
     18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     19  * Boston, MA 02110-1301, USA.
     20  */
     21 
     22 #include "config.h"
     23 
     24 #if ENABLE(SVG)
     25 #include "SVGColor.h"
     26 
     27 #include "CSSParser.h"
     28 #include "RGBColor.h"
     29 #include "SVGException.h"
     30 
     31 namespace WebCore {
     32 
     33 SVGColor::SVGColor(const SVGColorType& colorType)
     34     : m_colorType(colorType)
     35 {
     36 }
     37 
     38 PassRefPtr<RGBColor> SVGColor::rgbColor() const
     39 {
     40     return RGBColor::create(m_color.rgb());
     41 }
     42 
     43 void SVGColor::setRGBColor(const String& rgbColor, ExceptionCode& ec)
     44 {
     45     Color color = SVGColor::colorFromRGBColorString(rgbColor);
     46     if (!color.isValid()) {
     47         ec = SVGException::SVG_INVALID_VALUE_ERR;
     48         return;
     49     }
     50 
     51     m_color = color;
     52     m_colorType = SVG_COLORTYPE_RGBCOLOR;
     53     // FIXME: A follow up patch will call valueChanged() here.
     54 }
     55 
     56 Color SVGColor::colorFromRGBColorString(const String& colorString)
     57 {
     58     // FIXME: Rework css parser so it is more SVG aware.
     59     RGBA32 color;
     60     if (CSSParser::parseColor(color, colorString.stripWhiteSpace()))
     61         return color;
     62     return Color();
     63 }
     64 
     65 void SVGColor::setRGBColorICCColor(const String& rgbColor, const String& iccColor, ExceptionCode& ec)
     66 {
     67     if (rgbColor.isEmpty() || iccColor.isEmpty()) {
     68         ec = SVGException::SVG_INVALID_VALUE_ERR;
     69         return;
     70     }
     71 
     72     // FIXME: No support for ICC colors. We're just ignoring it.
     73     setRGBColor(rgbColor, ec);
     74     if (ec)
     75         return;
     76 
     77     m_colorType = SVG_COLORTYPE_RGBCOLOR_ICCCOLOR;
     78     // FIXME: A follow up patch will call valueChanged() here.
     79 }
     80 
     81 void SVGColor::setColor(unsigned short colorType, const String& rgbColor, const String& iccColor, ExceptionCode& ec)
     82 {
     83     if (colorType > SVG_COLORTYPE_CURRENTCOLOR) {
     84         ec = SVGException::SVG_WRONG_TYPE_ERR;
     85         return;
     86     }
     87 
     88     bool requiresRGBColor = false;
     89     bool requiresICCColor = false;
     90 
     91     SVGColorType type = static_cast<SVGColorType>(colorType);
     92     switch (type) {
     93     case SVG_COLORTYPE_UNKNOWN:
     94         // Spec: It is invalid to attempt to define a new value of this type or to attempt to switch an existing value to this type.
     95         ec = SVGException::SVG_INVALID_VALUE_ERR;
     96         return;
     97     case SVG_COLORTYPE_RGBCOLOR_ICCCOLOR:
     98         requiresICCColor = true;
     99     case SVG_COLORTYPE_RGBCOLOR:
    100         requiresRGBColor = true;
    101         break;
    102     case SVG_COLORTYPE_CURRENTCOLOR:
    103         break;
    104     }
    105 
    106     // Spec: If colorType requires an RGBColor, then rgbColor must be a string that matches <color>; otherwise, rgbColor must be null.
    107     if (requiresRGBColor && rgbColor.isEmpty()) {
    108         ec = SVGException::SVG_INVALID_VALUE_ERR;
    109         return;
    110     }
    111 
    112     // Spec: If colorType requires an SVGICCColor, then iccColor must be a string that matches <icccolor>; otherwise, iccColor must be null.
    113     if (requiresICCColor && iccColor.isEmpty()) {
    114         ec = SVGException::SVG_INVALID_VALUE_ERR;
    115         return;
    116     }
    117 
    118     // FIXME: A follow up patch will call valueChanged() here.
    119     m_colorType = type;
    120     if (!requiresRGBColor) {
    121         ASSERT(!requiresICCColor);
    122         m_color = Color();
    123         return;
    124     }
    125 
    126     if (requiresICCColor)
    127         setRGBColorICCColor(rgbColor, iccColor, ec);
    128     else
    129         setRGBColor(rgbColor, ec);
    130 }
    131 
    132 String SVGColor::cssText() const
    133 {
    134     switch (m_colorType) {
    135     case SVG_COLORTYPE_UNKNOWN:
    136         return String();
    137     case SVG_COLORTYPE_RGBCOLOR_ICCCOLOR:
    138     case SVG_COLORTYPE_RGBCOLOR:
    139         // FIXME: No ICC color support.
    140         return m_color.serialized();
    141     case SVG_COLORTYPE_CURRENTCOLOR:
    142         if (m_color.isValid())
    143             return m_color.serialized();
    144         return "currentColor";
    145     }
    146 
    147     ASSERT_NOT_REACHED();
    148     return String();
    149 }
    150 
    151 }
    152 
    153 #endif // ENABLE(SVG)
    154