1 files changed, 79 insertions, 0 deletions
diff --git a/WebCore/platform/graphics/GlyphWidthMap.cpp b/WebCore/platform/graphics/GlyphWidthMap.cpp
new file mode 100644
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+++ b/WebCore/platform/graphics/GlyphWidthMap.cpp
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+/*
+ * Copyright (C) 2006 Apple Computer, 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. 
+ * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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 "GlyphWidthMap.h"
+
+namespace WebCore
+{
+
+float GlyphWidthMap::widthForGlyph(Glyph g)
+{
+    unsigned pageNumber = (g / GlyphWidthPage::size);
+    GlyphWidthPage* page = locatePage(pageNumber);
+    if (page)
+        return page->widthForGlyph(g);
+    return cGlyphWidthUnknown;
+}
+
+void GlyphWidthMap::setWidthForGlyph(Glyph glyph, float width)
+{
+    unsigned pageNumber = (glyph / GlyphWidthPage::size);
+    GlyphWidthPage* page = locatePage(pageNumber);
+    if (page)
+        page->setWidthForGlyph(glyph, width);
+}
+
+inline GlyphWidthMap::GlyphWidthPage* GlyphWidthMap::locatePage(unsigned pageNumber)
+{
+    GlyphWidthPage* page;
+    if (pageNumber == 0) {
+        if (m_filledPrimaryPage)
+            return &m_primaryPage;
+        page = &m_primaryPage;
+        m_filledPrimaryPage = true;
+    } else {
+        if (m_pages) {
+            GlyphWidthPage* result = m_pages->get(pageNumber);
+            if (result)
+                return result;
+        }
+        page = new GlyphWidthPage;
+        if (!m_pages)
+            m_pages = new HashMap<int, GlyphWidthPage*>;
+        m_pages->set(pageNumber, page);
+    }
+
+    // Fill in the whole page with the unknown glyph width value.
+    for (unsigned i = 0; i < GlyphWidthPage::size; i++)
+        page->setWidthForIndex(i, cGlyphWidthUnknown);
+
+    return page;
+}
+
+}