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CSSFontFaceSrcValue.cpp
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100 lines (87 loc) · 3.85 KB
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/*
* Copyright (C) 2007-2017 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 "CSSFontFaceSrcValue.h"
#include "CSSMarkup.h"
#include "CachedFont.h"
#include "CachedFontLoadRequest.h"
#include "CachedResourceLoader.h"
#include "CachedResourceRequest.h"
#include "CachedResourceRequestInitiators.h"
#include "FontCustomPlatformData.h"
#include "FontLoadRequest.h"
#include "Node.h"
#include "SVGFontFaceElement.h"
#include "ScriptExecutionContext.h"
#include <wtf/text/StringBuilder.h>
namespace WebCore {
bool CSSFontFaceSrcValue::isSVGFontFaceSrc() const
{
return equalLettersIgnoringASCIICase(m_format, "svg");
}
bool CSSFontFaceSrcValue::isSVGFontTarget() const
{
return isSVGFontFaceSrc() || svgFontFaceElement();
}
bool CSSFontFaceSrcValue::isSupportedFormat() const
{
// Normally we would just check the format, but in order to avoid conflicts with the old WinIE style of font-face,
// we will also check to see if the URL ends with .eot. If so, we'll assume that we shouldn't load it.
if (m_format.isEmpty()) {
// Check for .eot.
if (!protocolIs(m_resource, "data") && m_resource.endsWithIgnoringASCIICase(".eot"))
return false;
return true;
}
return FontCustomPlatformData::supportsFormat(m_format) || isSVGFontFaceSrc();
}
String CSSFontFaceSrcValue::customCSSText() const
{
// FIXME: URLs should not be absolutized, but instead should be serialized exactly as they were specified.
const char* prefix = isLocal() ? "local(" : "url(";
if (m_format.isEmpty())
return makeString(prefix, serializeString(m_resource), ")");
return makeString(prefix, serializeString(m_resource), ")", " format(", serializeString(m_format), ")");
}
bool CSSFontFaceSrcValue::traverseSubresources(const WTF::Function<bool (const CachedResource&)>& handler) const
{
if (!m_cachedFont)
return false;
return handler(*m_cachedFont);
}
std::unique_ptr<FontLoadRequest> CSSFontFaceSrcValue::fontLoadRequest(ScriptExecutionContext* context, bool isSVG, bool isInitiatingElementInUserAgentShadowTree)
{
if (m_cachedFont)
return makeUnique<CachedFontLoadRequest>(*m_cachedFont);
auto request = context->fontLoadRequest(m_resource, isSVG, isInitiatingElementInUserAgentShadowTree, m_loadedFromOpaqueSource);
if (is<CachedFontLoadRequest>(request.get()))
m_cachedFont = &downcast<CachedFontLoadRequest>(request.get())->cachedFont();
return request;
}
bool CSSFontFaceSrcValue::equals(const CSSFontFaceSrcValue& other) const
{
return m_isLocal == other.m_isLocal && m_format == other.m_format && m_resource == other.m_resource;
}
}