WebCore/html/HTMLMarqueeElement.cpp

   1 /**
   2  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
   3  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
   4  * Copyright (C) 2003, 2007 Apple Inc. 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
  23 #include "config.h"
  24 #include "HTMLMarqueeElement.h"
  25
  26 #include "CSSPropertyNames.h"
  27 #include "CSSValueKeywords.h"
  28 #include "HTMLNames.h"
  29 #include "MappedAttribute.h"
  30 #include "RenderLayer.h"
  31 #include "RenderMarquee.h"
  32
  33 namespace WebCore {
  34
  35 using namespace HTMLNames;
  36
  37 // WinIE uses 60ms as the minimum delay by default.
  38 const int defaultMinimumDelay = 60;
  39
  40 HTMLMarqueeElement::HTMLMarqueeElement(const QualifiedName& tagName, Document* doc)
  41     : HTMLElement(tagName, doc)
  42     , ActiveDOMObject(doc, this)
  43     , m_minimumDelay(defaultMinimumDelay)
  44 {
  45     ASSERT(hasTagName(marqueeTag));
  46 }
  47
  48 bool HTMLMarqueeElement::mapToEntry(const QualifiedName& attrName, MappedAttributeEntry& result) const
  49 {
  50     if (attrName == widthAttr ||
  51         attrName == heightAttr ||
  52         attrName == bgcolorAttr ||
  53         attrName == vspaceAttr ||
  54         attrName == hspaceAttr ||
  55         attrName == scrollamountAttr ||
  56         attrName == scrolldelayAttr ||
  57         attrName == loopAttr ||
  58         attrName == behaviorAttr ||
  59         attrName == directionAttr) {
  60         result = eUniversal;
  61         return false;
  62     }
  63
  64     return HTMLElement::mapToEntry(attrName, result);
  65 }
  66
  67 void HTMLMarqueeElement::parseMappedAttribute(MappedAttribute *attr)
  68 {
  69     if (attr->name() == widthAttr) {
  70         if (!attr->value().isEmpty())
  71             addCSSLength(attr, CSSPropertyWidth, attr->value());
  72     } else if (attr->name() == heightAttr) {
  73         if (!attr->value().isEmpty())
  74             addCSSLength(attr, CSSPropertyHeight, attr->value());
  75     } else if (attr->name() == bgcolorAttr) {
  76         if (!attr->value().isEmpty())
  77             addCSSColor(attr, CSSPropertyBackgroundColor, attr->value());
  78     } else if (attr->name() == vspaceAttr) {
  79         if (!attr->value().isEmpty()) {
  80             addCSSLength(attr, CSSPropertyMarginTop, attr->value());
  81             addCSSLength(attr, CSSPropertyMarginBottom, attr->value());
  82         }
  83     } else if (attr->name() == hspaceAttr) {
  84         if (!attr->value().isEmpty()) {
  85             addCSSLength(attr, CSSPropertyMarginLeft, attr->value());
  86             addCSSLength(attr, CSSPropertyMarginRight, attr->value());
  87         }
  88     } else if (attr->name() == scrollamountAttr) {
  89         if (!attr->value().isEmpty())
  90             addCSSLength(attr, CSSPropertyWebkitMarqueeIncrement, attr->value());
  91     } else if (attr->name() == scrolldelayAttr) {
  92         if (!attr->value().isEmpty())
  93             addCSSLength(attr, CSSPropertyWebkitMarqueeSpeed, attr->value());
  94     } else if (attr->name() == loopAttr) {
  95         if (!attr->value().isEmpty()) {
  96             if (attr->value() == "-1" || equalIgnoringCase(attr->value(), "infinite"))
  97                 addCSSProperty(attr, CSSPropertyWebkitMarqueeRepetition, CSSValueInfinite);
  98             else
  99                 addCSSLength(attr, CSSPropertyWebkitMarqueeRepetition, attr->value());
 100         }
 101     } else if (attr->name() == behaviorAttr) {
 102         if (!attr->value().isEmpty())
 103             addCSSProperty(attr, CSSPropertyWebkitMarqueeStyle, attr->value());
 104     } else if (attr->name() == directionAttr) {
 105         if (!attr->value().isEmpty())
 106             addCSSProperty(attr, CSSPropertyWebkitMarqueeDirection, attr->value());
 107     } else if (attr->name() == truespeedAttr)
 108         m_minimumDelay = !attr->isEmpty() ? 0 : defaultMinimumDelay;
 109     else
 110         HTMLElement::parseMappedAttribute(attr);
 111 }
 112
 113 void HTMLMarqueeElement::start()
 114 {
 115     if (renderer() && renderer()->hasLayer() && renderBox()->layer()->marquee())
 116         renderBox()->layer()->marquee()->start();
 117 }
 118
 119 void HTMLMarqueeElement::stop()
 120 {
 121     if (renderer() && renderer()->hasLayer() && renderBox()->layer()->marquee())
 122         renderBox()->layer()->marquee()->stop();
 123 }
 124
 125 bool HTMLMarqueeElement::canSuspend() const
 126 {
 127     return true;
 128 }
 129
 130 void HTMLMarqueeElement::suspend()
 131 {
 132     if (renderer() && renderer()->hasLayer() && renderBox()->layer()->marquee())
 133         renderBox()->layer()->marquee()->suspend();
 134 }
 135
 136 void HTMLMarqueeElement::resume()
 137 {
 138     if (renderer() && renderer()->hasLayer() && renderBox()->layer()->marquee())
 139         renderBox()->layer()->marquee()->updateMarqueePosition();
 140 }
 141
 142 } // namespace WebCore