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* Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
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* Copyright (C) 2009 Torch Mobile, Inc.
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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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* 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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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, 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 COMPUTER, 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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#include "CachedFont.h"
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#if !PLATFORM(WIN_CAIRO) && !PLATFORM(WX)
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#define STORE_FONT_CUSTOM_PLATFORM_DATA
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#include "CachedResourceClient.h"
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#include "CachedResourceClientWalker.h"
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#include "CachedResourceLoader.h"
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#include "FontPlatformData.h"
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#include "MemoryCache.h"
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#include "ResourceBuffer.h"
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#include "TextResourceDecoder.h"
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#include "WebCoreMemoryInstrumentation.h"
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#include <wtf/Vector.h>
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#ifdef STORE_FONT_CUSTOM_PLATFORM_DATA
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#include "FontCustomPlatformData.h"
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#include "SVGDocument.h"
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#include "SVGElement.h"
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#include "SVGFontElement.h"
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#include "SVGGElement.h"
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CachedFont::CachedFont(const ResourceRequest& resourceRequest)
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: CachedResource(resourceRequest, FontResource)
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, m_loadInitiated(false)
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CachedFont::~CachedFont()
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#ifdef STORE_FONT_CUSTOM_PLATFORM_DATA
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void CachedFont::load(CachedResourceLoader*, const ResourceLoaderOptions& options)
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// Don't load the file yet. Wait for an access before triggering the load.
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void CachedFont::didAddClient(CachedResourceClient* c)
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ASSERT(c->resourceClientType() == CachedFontClient::expectedType());
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static_cast<CachedFontClient*>(c)->fontLoaded(this);
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void CachedFont::data(PassRefPtr<ResourceBuffer> data, bool allDataReceived)
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setEncodedSize(m_data.get() ? m_data->size() : 0);
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void CachedFont::beginLoadIfNeeded(CachedResourceLoader* dl)
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if (!m_loadInitiated) {
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m_loadInitiated = true;
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CachedResource::load(dl, m_options);
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bool CachedFont::ensureCustomFontData()
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#ifdef STORE_FONT_CUSTOM_PLATFORM_DATA
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if (!m_fontData && !errorOccurred() && !isLoading() && m_data) {
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m_fontData = createFontCustomPlatformData(m_data.get()->sharedBuffer());
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setStatus(DecodeError);
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FontPlatformData CachedFont::platformDataFromCustomData(float size, bool bold, bool italic, FontOrientation orientation, TextOrientation textOrientation, FontWidthVariant widthVariant, FontRenderingMode renderingMode)
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#if ENABLE(SVG_FONTS)
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if (m_externalSVGDocument)
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return FontPlatformData(size, bold, italic);
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#ifdef STORE_FONT_CUSTOM_PLATFORM_DATA
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return m_fontData->fontPlatformData(static_cast<int>(size), bold, italic, orientation, textOrientation, widthVariant, renderingMode);
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return FontPlatformData();
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#if ENABLE(SVG_FONTS)
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bool CachedFont::ensureSVGFontData()
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if (!m_externalSVGDocument && !errorOccurred() && !isLoading() && m_data) {
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m_externalSVGDocument = SVGDocument::create(0, KURL());
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RefPtr<TextResourceDecoder> decoder = TextResourceDecoder::create("application/xml");
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String svgSource = decoder->decode(m_data->data(), m_data->size());
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svgSource.append(decoder->flush());
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m_externalSVGDocument->setContent(svgSource);
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if (decoder->sawError())
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m_externalSVGDocument = 0;
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return m_externalSVGDocument;
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SVGFontElement* CachedFont::getSVGFontById(const String& fontName) const
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RefPtr<NodeList> list = m_externalSVGDocument->getElementsByTagNameNS(SVGNames::fontTag.namespaceURI(), SVGNames::fontTag.localName());
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unsigned listLength = list->length();
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for (unsigned i = 0; i < listLength; ++i) {
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ASSERT(list->item(i));
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ASSERT(list->item(i)->hasTagName(SVGNames::fontTag));
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if (fontName.isEmpty())
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return static_cast<SVGFontElement*>(list->item(0));
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for (unsigned i = 0; i < listLength; ++i) {
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SVGFontElement* element = static_cast<SVGFontElement*>(list->item(i));
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if (element->getIdAttribute() == fontName)
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void CachedFont::allClientsRemoved()
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#ifdef STORE_FONT_CUSTOM_PLATFORM_DATA
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void CachedFont::checkNotify()
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CachedResourceClientWalker<CachedFontClient> w(m_clients);
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while (CachedFontClient* c = w.next())
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void CachedFont::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
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MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CachedResourceFont);
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CachedResource::reportMemoryUsage(memoryObjectInfo);
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#if ENABLE(SVG_FONTS)
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info.addMember(m_externalSVGDocument);
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#ifdef STORE_FONT_CUSTOM_PLATFORM_DATA
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info.addMember(m_fontData);