Code drop from //branches/cupcake/...@124589

1 files changed, 60 insertions, 0 deletions

diff --git a/WebCore/platform/graphics/WidthIterator.h b/WebCore/platform/graphics/WidthIterator.h
new file mode 100644
index 0000000..a0eb26d
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+++ b/WebCore/platform/graphics/WidthIterator.h
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+/*
+ * Copyright (C) 2003, 2006, 2008 Apple Inc. All rights reserved.
+ * Copyright (C) 2008 Holger Hans Peter Freyther
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef WidthIterator_h
+#define WidthIterator_h
+
+#include <wtf/unicode/Unicode.h>
+
+namespace WebCore {
+
+class Font;
+class GlyphBuffer;
+class TextRun;
+
+struct WidthIterator {
+    WidthIterator(const Font*, const TextRun&);
+
+#ifdef ANDROID_GLYPHBUFFER_HAS_ADJUSTED_WIDTHS
+    bool advance(int to, GlyphBuffer* = 0);
+#else
+    void advance(int to, GlyphBuffer* = 0);
+#endif
+    bool advanceOneCharacter(float& width, GlyphBuffer* = 0);
+
+    const Font* m_font;
+
+    const TextRun& m_run;
+    int m_end;
+
+    unsigned m_currentCharacter;
+    float m_runWidthSoFar;
+    float m_padding;
+    float m_padPerSpace;
+    float m_finalRoundingWidth;
+
+private:
+    UChar32 normalizeVoicingMarks(int currentCharacter);
+};
+
+}
+
+#endif