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/*
* Copyright (C) 2006 Rob Buis <buis@kde.org>
* (C) 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2008 Apple Inc. All rights reserved.
*
* 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"
#include "CSSCursorImageValue.h"
#include "CSSImageSetValue.h"
#include "CSSImageValue.h"
#include "CachedImage.h"
#include "CachedResourceLoader.h"
#include "SVGCursorElement.h"
#include "SVGLengthContext.h"
#include "SVGURIReference.h"
#include "TreeScope.h"
#include <wtf/MathExtras.h>
#include <wtf/text/StringBuilder.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
CSSCursorImageValue::CSSCursorImageValue(Ref<CSSValue>&& imageValue, bool hasHotSpot, const IntPoint& hotSpot)
: CSSValue(CursorImageClass)
, m_imageValue(WTFMove(imageValue))
, m_hasHotSpot(hasHotSpot)
, m_hotSpot(hotSpot)
{
if (is<CSSImageValue>(m_imageValue.get()))
m_originalURL = downcast<CSSImageValue>(m_imageValue.get()).url();
}
CSSCursorImageValue::~CSSCursorImageValue()
{
for (auto* element : m_cursorElements)
element->removeClient(*this);
}
String CSSCursorImageValue::customCSSText() const
{
StringBuilder result;
result.append(m_imageValue.get().cssText());
if (m_hasHotSpot) {
result.append(' ');
result.appendNumber(m_hotSpot.x());
result.append(' ');
result.appendNumber(m_hotSpot.y());
}
return result.toString();
}
SVGCursorElement* CSSCursorImageValue::updateCursorElement(const Document& document)
{
if (!m_originalURL.hasFragmentIdentifier())
return nullptr;
auto* element = SVGURIReference::targetElementFromIRIString(m_originalURL, document);
if (!is<SVGCursorElement>(element))
return nullptr;
auto& cursorElement = downcast<SVGCursorElement>(*element);
if (m_cursorElements.add(&cursorElement).isNewEntry) {
cursorElementChanged(cursorElement);
cursorElement.addClient(*this);
}
return &cursorElement;
}
void CSSCursorImageValue::cursorElementRemoved(SVGCursorElement& cursorElement)
{
m_cursorElements.remove(&cursorElement);
}
void CSSCursorImageValue::cursorElementChanged(SVGCursorElement& cursorElement)
{
// FIXME: This will override hot spot specified in CSS, which is probably incorrect.
SVGLengthContext lengthContext(nullptr);
m_hasHotSpot = true;
float x = std::round(cursorElement.x().value(lengthContext));
m_hotSpot.setX(static_cast<int>(x));
float y = std::round(cursorElement.y().value(lengthContext));
m_hotSpot.setY(static_cast<int>(y));
}
std::pair<CachedImage*, float> CSSCursorImageValue::loadImage(CachedResourceLoader& loader, const ResourceLoaderOptions& options)
{
if (is<CSSImageSetValue>(m_imageValue.get()))
return downcast<CSSImageSetValue>(m_imageValue.get()).loadBestFitImage(loader, options);
if (auto* cursorElement = updateCursorElement(*loader.document())) {
if (cursorElement->href() != downcast<CSSImageValue>(m_imageValue.get()).url())
m_imageValue = CSSImageValue::create(loader.document()->completeURL(cursorElement->href()));
}
return { downcast<CSSImageValue>(m_imageValue.get()).loadImage(loader, options), 1 };
}
bool CSSCursorImageValue::equals(const CSSCursorImageValue& other) const
{
return m_hasHotSpot ? other.m_hasHotSpot && m_hotSpot == other.m_hotSpot : !other.m_hasHotSpot
&& compareCSSValue(m_imageValue, other.m_imageValue);
}
} // namespace WebCore
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