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