Merge WebKit at r75315: Initial merge by git.

Change-Id: I570314b346ce101c935ed22a626b48c2af266b84

1 files changed, 217 insertions, 0 deletions

diff --git a/Source/WebCore/loader/cache/CachedFont.cpp b/Source/WebCore/loader/cache/CachedFont.cpp
new file mode 100644
index 0000000..d6967bf
--- /dev/null
+++ b/Source/WebCore/loader/cache/CachedFont.cpp
@@ -0,0 +1,217 @@
+/*
+ * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
+ * Copyright (C) 2009 Torch Mobile, Inc.
+ *
+ * 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 COMPUTER, 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 COMPUTER, 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 "CachedFont.h"
+
+#if PLATFORM(CG) || PLATFORM(QT) || PLATFORM(GTK) || (PLATFORM(CHROMIUM) && (OS(WINDOWS) || OS(LINUX) || OS(FREEBSD))) || PLATFORM(HAIKU) || OS(WINCE) || PLATFORM(ANDROID) || PLATFORM(BREWMP)
+#define STORE_FONT_CUSTOM_PLATFORM_DATA
+#endif
+
+#include "CachedResourceClient.h"
+#include "CachedResourceClientWalker.h"
+#include "CachedResourceLoader.h"
+#include "FontPlatformData.h"
+#include "MemoryCache.h"
+#include "SharedBuffer.h"
+#include "TextResourceDecoder.h"
+#include <wtf/Vector.h>
+
+#ifdef STORE_FONT_CUSTOM_PLATFORM_DATA
+#include "FontCustomPlatformData.h"
+#endif
+
+#if ENABLE(SVG_FONTS)
+#include "NodeList.h"
+#include "SVGElement.h"
+#include "SVGFontElement.h"
+#include "SVGGElement.h"
+#include "SVGNames.h"
+#endif
+
+namespace WebCore {
+
+CachedFont::CachedFont(const String &url)
+    : CachedResource(url, FontResource)
+    , m_fontData(0)
+    , m_loadInitiated(false)
+#if ENABLE(SVG_FONTS)
+    , m_isSVGFont(false)
+#endif
+{
+}
+
+CachedFont::~CachedFont()
+{
+#ifdef STORE_FONT_CUSTOM_PLATFORM_DATA
+    delete m_fontData;
+#endif
+}
+
+void CachedFont::load(CachedResourceLoader*)
+{
+    // Don't load the file yet.  Wait for an access before triggering the load.
+    setLoading(true);
+}
+
+void CachedFont::didAddClient(CachedResourceClient* c)
+{
+    if (!isLoading())
+        c->fontLoaded(this);
+}
+
+void CachedFont::data(PassRefPtr<SharedBuffer> data, bool allDataReceived)
+{
+    if (!allDataReceived)
+        return;
+
+    m_data = data;     
+    setEncodedSize(m_data.get() ? m_data->size() : 0);
+    setLoading(false);
+    checkNotify();
+}
+
+void CachedFont::beginLoadIfNeeded(CachedResourceLoader* dl)
+{
+    if (!m_loadInitiated) {
+        m_loadInitiated = true;
+        dl->load(this, false);
+    }
+}
+
+bool CachedFont::ensureCustomFontData()
+{
+#ifdef STORE_FONT_CUSTOM_PLATFORM_DATA
+#if ENABLE(SVG_FONTS)
+    ASSERT(!m_isSVGFont);
+#endif
+    if (!m_fontData && !errorOccurred() && !isLoading() && m_data) {
+        m_fontData = createFontCustomPlatformData(m_data.get());
+        if (!m_fontData)
+            setStatus(DecodeError);
+    }
+#endif
+    return m_fontData;
+}
+
+FontPlatformData CachedFont::platformDataFromCustomData(float size, bool bold, bool italic, FontOrientation orientation, FontRenderingMode renderingMode)
+{
+#if ENABLE(SVG_FONTS)
+    if (m_externalSVGDocument)
+        return FontPlatformData(size, bold, italic);
+#endif
+#ifdef STORE_FONT_CUSTOM_PLATFORM_DATA
+    ASSERT(m_fontData);
+    return m_fontData->fontPlatformData(static_cast<int>(size), bold, italic, orientation, renderingMode);
+#else
+    return FontPlatformData();
+#endif
+}
+
+#if ENABLE(SVG_FONTS)
+bool CachedFont::ensureSVGFontData()
+{
+    ASSERT(m_isSVGFont);
+    if (!m_externalSVGDocument && !errorOccurred() && !isLoading() && m_data) {
+        m_externalSVGDocument = SVGDocument::create(0, KURL());
+        m_externalSVGDocument->open();
+
+        RefPtr<TextResourceDecoder> decoder = TextResourceDecoder::create("application/xml");
+        m_externalSVGDocument->write(decoder->decode(m_data->data(), m_data->size()));
+        m_externalSVGDocument->write(decoder->flush());
+        if (decoder->sawError()) {
+            m_externalSVGDocument.clear();
+            return 0;
+        }
+
+        m_externalSVGDocument->finishParsing();
+        m_externalSVGDocument->close();
+    }
+
+    return m_externalSVGDocument;
+}
+
+SVGFontElement* CachedFont::getSVGFontById(const String& fontName) const
+{
+    ASSERT(m_isSVGFont);
+    RefPtr<NodeList> list = m_externalSVGDocument->getElementsByTagNameNS(SVGNames::fontTag.namespaceURI(), SVGNames::fontTag.localName());
+    if (!list)
+        return 0;
+
+    unsigned listLength = list->length();
+    if (!listLength)
+        return 0;
+
+#ifndef NDEBUG
+    for (unsigned i = 0; i < listLength; ++i) {
+        ASSERT(list->item(i));
+        ASSERT(list->item(i)->hasTagName(SVGNames::fontTag));
+    }
+#endif
+
+    if (fontName.isEmpty())
+        return static_cast<SVGFontElement*>(list->item(0));
+
+    for (unsigned i = 0; i < listLength; ++i) {
+        SVGFontElement* element = static_cast<SVGFontElement*>(list->item(i));
+        if (element->getIdAttribute() == fontName)
+            return element;
+    }
+
+    return 0;
+}
+#endif
+
+void CachedFont::allClientsRemoved()
+{
+#ifdef STORE_FONT_CUSTOM_PLATFORM_DATA
+    if (m_fontData) {
+        delete m_fontData;
+        m_fontData = 0;
+    }
+#endif
+}
+
+void CachedFont::checkNotify()
+{
+    if (isLoading())
+        return;
+    
+    CachedResourceClientWalker w(m_clients);
+    while (CachedResourceClient *c = w.next())
+         c->fontLoaded(this);
+}
+
+
+void CachedFont::error(CachedResource::Status status)
+{
+    setStatus(status);
+    ASSERT(errorOccurred());
+    setLoading(false);
+    checkNotify();
+}
+
+}