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/*
* Copyright (C) 2008 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "CSSCanvasValue.h"
#include "RenderElement.h"
namespace WebCore {
CSSCanvasValue::~CSSCanvasValue()
{
if (m_element)
m_element->removeObserver(m_canvasObserver);
}
String CSSCanvasValue::customCSSText() const
{
return makeString("-webkit-canvas(", m_name, ')');
}
void CSSCanvasValue::canvasChanged(HTMLCanvasElement&, const std::optional<FloatRect>& changedRect)
{
if (!changedRect)
return;
auto imageChangeRect = enclosingIntRect(changedRect.value());
for (auto it = clients().begin(), end = clients().end(); it != end; ++it)
it->key->imageChanged(static_cast<WrappedImagePtr>(this), &imageChangeRect);
}
void CSSCanvasValue::canvasResized(HTMLCanvasElement&)
{
for (auto it = clients().begin(), end = clients().end(); it != end; ++it)
it->key->imageChanged(static_cast<WrappedImagePtr>(this));
}
void CSSCanvasValue::canvasDestroyed(HTMLCanvasElement& element)
{
ASSERT_UNUSED(&element, &element == m_element);
m_element = nullptr;
}
FloatSize CSSCanvasValue::fixedSize(const RenderElement& renderer)
{
if (HTMLCanvasElement* elt = element(renderer.document()))
return FloatSize(elt->width(), elt->height());
return { };
}
HTMLCanvasElement* CSSCanvasValue::element(Document& document)
{
if (!m_element) {
m_element = document.getCSSCanvasElement(m_name);
if (!m_element)
return nullptr;
m_element->addObserver(m_canvasObserver);
}
return m_element;
}
RefPtr<Image> CSSCanvasValue::image(RenderElement& renderer, const FloatSize& /*size*/)
{
ASSERT(clients().contains(&renderer));
HTMLCanvasElement* element = this->element(renderer.document());
if (!element || !element->buffer())
return nullptr;
return element->copiedImage();
}
bool CSSCanvasValue::equals(const CSSCanvasValue& other) const
{
return m_name == other.m_name;
}
} // namespace WebCore