185 lines
6.5 KiB
C++
185 lines
6.5 KiB
C++
/*
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* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
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* (C) 1999 Antti Koivisto (koivisto@kde.org)
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* Copyright (C) 2003, 2007, 2010 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#include "config.h"
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#include "HTMLMarqueeElement.h"
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#include "Attribute.h"
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#include "CSSPropertyNames.h"
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#include "CSSValueKeywords.h"
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#include "HTMLNames.h"
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#include "HTMLParserIdioms.h"
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#include "RenderLayer.h"
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#include "RenderLayerScrollableArea.h"
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#include "RenderMarquee.h"
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#include <wtf/IsoMallocInlines.h>
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namespace WebCore {
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WTF_MAKE_ISO_ALLOCATED_IMPL(HTMLMarqueeElement);
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using namespace HTMLNames;
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inline HTMLMarqueeElement::HTMLMarqueeElement(const QualifiedName& tagName, Document& document)
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: HTMLElement(tagName, document)
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, ActiveDOMObject(document)
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{
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ASSERT(hasTagName(marqueeTag));
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}
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Ref<HTMLMarqueeElement> HTMLMarqueeElement::create(const QualifiedName& tagName, Document& document)
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{
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auto marqueeElement = adoptRef(*new HTMLMarqueeElement(tagName, document));
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marqueeElement->suspendIfNeeded();
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return marqueeElement;
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}
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int HTMLMarqueeElement::minimumDelay() const
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{
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if (!hasAttributeWithoutSynchronization(truespeedAttr)) {
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// WinIE uses 60ms as the minimum delay by default.
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return 60;
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}
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return 16; // Don't allow timers at < 16ms intervals to avoid CPU hogging: webkit.org/b/160609
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}
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bool HTMLMarqueeElement::hasPresentationalHintsForAttribute(const QualifiedName& name) const
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{
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if (name == widthAttr || name == heightAttr || name == bgcolorAttr || name == vspaceAttr || name == hspaceAttr || name == scrollamountAttr || name == scrolldelayAttr || name == loopAttr || name == behaviorAttr || name == directionAttr)
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return true;
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return HTMLElement::hasPresentationalHintsForAttribute(name);
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}
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void HTMLMarqueeElement::collectPresentationalHintsForAttribute(const QualifiedName& name, const AtomString& value, MutableStyleProperties& style)
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{
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if (name == widthAttr) {
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if (!value.isEmpty())
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addHTMLLengthToStyle(style, CSSPropertyWidth, value);
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} else if (name == heightAttr) {
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if (!value.isEmpty())
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addHTMLLengthToStyle(style, CSSPropertyHeight, value);
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} else if (name == bgcolorAttr) {
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if (!value.isEmpty())
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addHTMLColorToStyle(style, CSSPropertyBackgroundColor, value);
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} else if (name == vspaceAttr) {
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if (!value.isEmpty()) {
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addHTMLLengthToStyle(style, CSSPropertyMarginTop, value);
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addHTMLLengthToStyle(style, CSSPropertyMarginBottom, value);
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}
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} else if (name == hspaceAttr) {
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if (!value.isEmpty()) {
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addHTMLLengthToStyle(style, CSSPropertyMarginLeft, value);
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addHTMLLengthToStyle(style, CSSPropertyMarginRight, value);
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}
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} else if (name == scrollamountAttr) {
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if (!value.isEmpty())
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addHTMLLengthToStyle(style, CSSPropertyWebkitMarqueeIncrement, value);
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} else if (name == scrolldelayAttr) {
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if (!value.isEmpty())
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addHTMLNumberToStyle(style, CSSPropertyWebkitMarqueeSpeed, value);
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} else if (name == loopAttr) {
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if (!value.isEmpty()) {
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if (value == "-1" || equalLettersIgnoringASCIICase(value, "infinite"))
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addPropertyToPresentationalHintStyle(style, CSSPropertyWebkitMarqueeRepetition, CSSValueInfinite);
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else
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addHTMLNumberToStyle(style, CSSPropertyWebkitMarqueeRepetition, value);
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}
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} else if (name == behaviorAttr) {
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if (!value.isEmpty())
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addPropertyToPresentationalHintStyle(style, CSSPropertyWebkitMarqueeStyle, value);
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} else if (name == directionAttr) {
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if (!value.isEmpty())
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addPropertyToPresentationalHintStyle(style, CSSPropertyWebkitMarqueeDirection, value);
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} else
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HTMLElement::collectPresentationalHintsForAttribute(name, value, style);
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}
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void HTMLMarqueeElement::start()
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{
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if (auto* renderer = renderMarquee())
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renderer->start();
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}
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void HTMLMarqueeElement::stop()
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{
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if (auto* renderer = renderMarquee())
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renderer->stop();
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}
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unsigned HTMLMarqueeElement::scrollAmount() const
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{
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return limitToOnlyHTMLNonNegative(attributeWithoutSynchronization(scrollamountAttr), RenderStyle::initialMarqueeIncrement().intValue());
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}
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void HTMLMarqueeElement::setScrollAmount(unsigned scrollAmount)
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{
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setUnsignedIntegralAttribute(scrollamountAttr, limitToOnlyHTMLNonNegative(scrollAmount, RenderStyle::initialMarqueeIncrement().intValue()));
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}
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unsigned HTMLMarqueeElement::scrollDelay() const
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{
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return limitToOnlyHTMLNonNegative(attributeWithoutSynchronization(scrolldelayAttr), RenderStyle::initialMarqueeSpeed());
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}
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void HTMLMarqueeElement::setScrollDelay(unsigned scrollDelay)
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{
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setUnsignedIntegralAttribute(scrolldelayAttr, limitToOnlyHTMLNonNegative(scrollDelay, RenderStyle::initialMarqueeSpeed()));
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}
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int HTMLMarqueeElement::loop() const
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{
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int loopValue = getIntegralAttribute(loopAttr);
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return loopValue > 0 ? loopValue : -1;
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}
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ExceptionOr<void> HTMLMarqueeElement::setLoop(int loop)
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{
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if (loop <= 0 && loop != -1)
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return Exception { IndexSizeError };
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setIntegralAttribute(loopAttr, loop);
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return { };
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}
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void HTMLMarqueeElement::suspend(ReasonForSuspension)
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{
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if (RenderMarquee* marqueeRenderer = renderMarquee())
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marqueeRenderer->suspend();
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}
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void HTMLMarqueeElement::resume()
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{
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if (RenderMarquee* marqueeRenderer = renderMarquee())
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marqueeRenderer->updateMarqueePosition();
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}
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RenderMarquee* HTMLMarqueeElement::renderMarquee() const
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{
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if (!renderer() || !renderer()->hasLayer())
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return nullptr;
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auto* scrollableArea = renderBoxModelObject()->layer()->scrollableArea();
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if (!scrollableArea)
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return nullptr;
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return scrollableArea->marquee();
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}
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} // namespace WebCore
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