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/*
* Copyright (C) 2000 Lars Knoll (knoll@kde.org)
* (C) 2000 Antti Koivisto (koivisto@kde.org)
* (C) 2000 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2003, 2005-2008, 2016 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 "StyleCachedImage.h"
#include "CSSCursorImageValue.h"
#include "CSSImageSetValue.h"
#include "CSSImageValue.h"
#include "CachedImage.h"
#include "RenderElement.h"
namespace WebCore {
StyleCachedImage::StyleCachedImage(CSSValue& cssValue)
: m_cssValue(cssValue)
{
ASSERT(is<CSSImageValue>(m_cssValue) || is<CSSImageSetValue>(m_cssValue) || is<CSSCursorImageValue>(m_cssValue));
m_isCachedImage = true;
// CSSImageValue doesn't get invalidated so we can grab the CachedImage immediately if it exists.
if (is<CSSImageValue>(m_cssValue)) {
m_cachedImage = downcast<CSSImageValue>(m_cssValue.get()).cachedImage();
if (m_cachedImage)
m_isPending = false;
}
}
StyleCachedImage::~StyleCachedImage()
{
}
bool StyleCachedImage::operator==(const StyleImage& other) const
{
if (!is<StyleCachedImage>(other))
return false;
auto& otherCached = downcast<StyleCachedImage>(other);
if (&otherCached == this)
return true;
if (m_scaleFactor != otherCached.m_scaleFactor)
return false;
if (m_cssValue.ptr() == otherCached.m_cssValue.ptr())
return true;
if (m_cachedImage && m_cachedImage == otherCached.m_cachedImage)
return true;
return false;
}
void StyleCachedImage::load(CachedResourceLoader& loader, const ResourceLoaderOptions& options)
{
ASSERT(m_isPending);
m_isPending = false;
if (is<CSSImageValue>(m_cssValue)) {
auto& imageValue = downcast<CSSImageValue>(m_cssValue.get());
m_cachedImage = imageValue.loadImage(loader, options);
return;
}
if (is<CSSImageSetValue>(m_cssValue)) {
auto& imageSetValue = downcast<CSSImageSetValue>(m_cssValue.get());
std::tie(m_cachedImage, m_scaleFactor) = imageSetValue.loadBestFitImage(loader, options);
return;
}
if (is<CSSCursorImageValue>(m_cssValue.get())) {
auto& cursorValue = downcast<CSSCursorImageValue>(m_cssValue.get());
std::tie(m_cachedImage, m_scaleFactor) = cursorValue.loadImage(loader, options);
return;
}
}
CachedImage* StyleCachedImage::cachedImage() const
{
return m_cachedImage.get();
}
Ref<CSSValue> StyleCachedImage::cssValue() const
{
return m_cssValue.copyRef();
}
bool StyleCachedImage::canRender(const RenderElement* renderer, float multiplier) const
{
if (!m_cachedImage)
return false;
return m_cachedImage->canRender(renderer, multiplier);
}
bool StyleCachedImage::isPending() const
{
return m_isPending;
}
bool StyleCachedImage::isLoaded() const
{
if (!m_cachedImage)
return false;
return m_cachedImage->isLoaded();
}
bool StyleCachedImage::errorOccurred() const
{
if (!m_cachedImage)
return false;
return m_cachedImage->errorOccurred();
}
FloatSize StyleCachedImage::imageSize(const RenderElement* renderer, float multiplier) const
{
if (!m_cachedImage)
return { };
FloatSize size = m_cachedImage->imageSizeForRenderer(renderer, multiplier);
size.scale(1 / m_scaleFactor);
return size;
}
bool StyleCachedImage::imageHasRelativeWidth() const
{
if (!m_cachedImage)
return false;
return m_cachedImage->imageHasRelativeWidth();
}
bool StyleCachedImage::imageHasRelativeHeight() const
{
if (!m_cachedImage)
return false;
return m_cachedImage->imageHasRelativeHeight();
}
void StyleCachedImage::computeIntrinsicDimensions(const RenderElement*, Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio)
{
if (!m_cachedImage)
return;
m_cachedImage->computeIntrinsicDimensions(intrinsicWidth, intrinsicHeight, intrinsicRatio);
}
bool StyleCachedImage::usesImageContainerSize() const
{
if (!m_cachedImage)
return false;
return m_cachedImage->usesImageContainerSize();
}
void StyleCachedImage::setContainerSizeForRenderer(const RenderElement* renderer, const FloatSize& imageContainerSize, float imageContainerZoomFactor)
{
if (!m_cachedImage)
return;
m_cachedImage->setContainerSizeForRenderer(renderer, LayoutSize(imageContainerSize), imageContainerZoomFactor);
}
void StyleCachedImage::addClient(RenderElement* renderer)
{
ASSERT(!m_isPending);
if (!m_cachedImage)
return;
ASSERT(renderer);
m_cachedImage->addClient(*renderer);
}
void StyleCachedImage::removeClient(RenderElement* renderer)
{
ASSERT(!m_isPending);
if (!m_cachedImage)
return;
ASSERT(renderer);
m_cachedImage->removeClient(*renderer);
}
RefPtr<Image> StyleCachedImage::image(RenderElement* renderer, const FloatSize&) const
{
ASSERT(!m_isPending);
if (!m_cachedImage)
return nullptr;
return m_cachedImage->imageForRenderer(renderer);
}
float StyleCachedImage::imageScaleFactor() const
{
return m_scaleFactor;
}
bool StyleCachedImage::knownToBeOpaque(const RenderElement* renderer) const
{
if (!m_cachedImage)
return false;
return m_cachedImage->currentFrameKnownToBeOpaque(renderer);
}
}
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