--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/css/CSSFontFaceSource.cpp Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,197 @@
+/*
+ * Copyright (C) 2007, 2008 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 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 "CSSFontFaceSource.h"
+
+#include "CachedFont.h"
+#include "CSSFontFace.h"
+#include "CSSFontSelector.h"
+#include "DocLoader.h"
+#include "FontCache.h"
+#include "FontDescription.h"
+#include "GlyphPageTreeNode.h"
+#include "SimpleFontData.h"
+
+#if ENABLE(SVG_FONTS)
+#if !PLATFORM(WX)
+#include "FontCustomPlatformData.h"
+#endif
+#include "HTMLNames.h"
+#include "SVGFontData.h"
+#include "SVGFontElement.h"
+#include "SVGFontFaceElement.h"
+#include "SVGURIReference.h"
+#endif
+
+namespace WebCore {
+
+CSSFontFaceSource::CSSFontFaceSource(const String& str, CachedFont* font)
+ : m_string(str)
+ , m_font(font)
+ , m_face(0)
+#if ENABLE(SVG_FONTS)
+ , m_svgFontFaceElement(0)
+#endif
+{
+ if (m_font)
+ m_font->addClient(this);
+}
+
+CSSFontFaceSource::~CSSFontFaceSource()
+{
+ if (m_font)
+ m_font->removeClient(this);
+ pruneTable();
+}
+
+void CSSFontFaceSource::pruneTable()
+{
+ if (m_fontDataTable.isEmpty())
+ return;
+ HashMap<unsigned, SimpleFontData*>::iterator end = m_fontDataTable.end();
+ for (HashMap<unsigned, SimpleFontData*>::iterator it = m_fontDataTable.begin(); it != end; ++it)
+ GlyphPageTreeNode::pruneTreeCustomFontData(it->second);
+ deleteAllValues(m_fontDataTable);
+ m_fontDataTable.clear();
+}
+
+bool CSSFontFaceSource::isLoaded() const
+{
+ if (m_font)
+ return m_font->isLoaded();
+ return true;
+}
+
+bool CSSFontFaceSource::isValid() const
+{
+ if (m_font)
+ return !m_font->errorOccurred();
+ return true;
+}
+
+void CSSFontFaceSource::fontLoaded(CachedFont*)
+{
+ pruneTable();
+ if (m_face)
+ m_face->fontLoaded(this);
+}
+
+SimpleFontData* CSSFontFaceSource::getFontData(const FontDescription& fontDescription, bool syntheticBold, bool syntheticItalic, CSSFontSelector* fontSelector)
+{
+ // If the font hasn't loaded or an error occurred, then we've got nothing.
+ if (!isValid())
+ return 0;
+
+#if ENABLE(SVG_FONTS)
+ if (!m_font && !m_svgFontFaceElement) {
+#else
+ if (!m_font) {
+#endif
+ SimpleFontData* fontData = fontCache()->getCachedFontData(fontDescription, m_string);
+
+ // We're local. Just return a SimpleFontData from the normal cache.
+ return fontData;
+ }
+
+ // See if we have a mapping in our FontData cache.
+ unsigned hashKey = fontDescription.computedPixelSize() << 2 | (syntheticBold ? 2 : 0) | (syntheticItalic ? 1 : 0);
+ if (SimpleFontData* cachedData = m_fontDataTable.get(hashKey))
+ return cachedData;
+
+ OwnPtr<SimpleFontData> fontData;
+
+ // If we are still loading, then we let the system pick a font.
+ if (isLoaded()) {
+ if (m_font) {
+#if ENABLE(SVG_FONTS)
+ if (m_font->isSVGFont()) {
+ // For SVG fonts parse the external SVG document, and extract the <font> element.
+ if (!m_font->ensureSVGFontData())
+ return 0;
+
+ if (!m_externalSVGFontElement)
+ m_externalSVGFontElement = m_font->getSVGFontById(SVGURIReference::getTarget(m_string));
+
+ if (!m_externalSVGFontElement)
+ return 0;
+
+ SVGFontFaceElement* fontFaceElement = 0;
+
+ // Select first <font-face> child
+ for (Node* fontChild = m_externalSVGFontElement->firstChild(); fontChild; fontChild = fontChild->nextSibling()) {
+ if (fontChild->hasTagName(SVGNames::font_faceTag)) {
+ fontFaceElement = static_cast<SVGFontFaceElement*>(fontChild);
+ break;
+ }
+ }
+
+ if (fontFaceElement) {
+ if (!m_svgFontFaceElement) {
+ // We're created using a CSS @font-face rule, that means we're not associated with a SVGFontFaceElement.
+ // Use the imported <font-face> tag as referencing font-face element for these cases.
+ m_svgFontFaceElement = fontFaceElement;
+ }
+
+ SVGFontData* svgFontData = new SVGFontData(fontFaceElement);
+ fontData.set(new SimpleFontData(m_font->platformDataFromCustomData(fontDescription.computedPixelSize(), syntheticBold, syntheticItalic, fontDescription.renderingMode()), true, false, svgFontData));
+ }
+ } else
+#endif
+ {
+ // Create new FontPlatformData from our CGFontRef, point size and ATSFontRef.
+ if (!m_font->ensureCustomFontData())
+ return 0;
+
+ fontData.set(new SimpleFontData(m_font->platformDataFromCustomData(fontDescription.computedPixelSize(), syntheticBold, syntheticItalic, fontDescription.renderingMode()), true, false));
+ }
+ } else {
+#if ENABLE(SVG_FONTS)
+ // In-Document SVG Fonts
+ if (m_svgFontFaceElement) {
+ SVGFontData* svgFontData = new SVGFontData(m_svgFontFaceElement);
+ fontData.set(new SimpleFontData(FontPlatformData(fontDescription.computedPixelSize(), syntheticBold, syntheticItalic), true, false, svgFontData));
+ }
+#endif
+ }
+ } else {
+ // Kick off the load now.
+ if (DocLoader* docLoader = fontSelector->docLoader())
+ m_font->beginLoadIfNeeded(docLoader);
+ // FIXME: m_string is a URL so it makes no sense to pass it as a family name.
+ SimpleFontData* tempData = fontCache()->getCachedFontData(fontDescription, m_string);
+ if (!tempData)
+ tempData = fontCache()->getLastResortFallbackFont(fontDescription);
+
+ fontData.set(new SimpleFontData(tempData->platformData(), true, true));
+ }
+
+ SimpleFontData* fontDataRawPtr = fontData.leakPtr();
+ m_fontDataTable.set(hashKey, fontDataRawPtr);
+
+ return fontDataRawPtr;
+}
+
+}