Shape unicode-range: font faces in only one iteration

third_party/WebKit/Source/platform/fonts/FontDataForRangeSet.h

+/*
+ * Copyright (C) 2008, 2009 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.
+ */
+
+#ifndef FontDataForRangeSet_h
+#define FontDataForRangeSet_h
+
+#include "platform/fonts/FontData.h"
+#include "platform/fonts/SimpleFontData.h"
+#include "platform/fonts/UnicodeRangeSet.h"
+#include "wtf/Allocator.h"
+#include "wtf/text/CharacterNames.h"
+
+namespace blink {
+
+class SimpleFontData;
+
+class FontDataForRangeSet final {
+    DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
+    explicit FontDataForRangeSet(PassRefPtr<SimpleFontData> fontData)
+        : m_fontData(fontData)
+    {
+    }
+
+    FontDataForRangeSet()
+        : m_fontData(nullptr)
+    {
+    }
+
+    explicit FontDataForRangeSet(PassRefPtr<SimpleFontData> fontData, PassRefPtr<UnicodeRangeSet> rangeSet)
+        : m_fontData(fontData)
+        , m_rangeSet(rangeSet)
+    {
+    }
+
+    // Shorthand for GlyphPageTreeNode tests.
+    explicit FontDataForRangeSet(PassRefPtr<SimpleFontData> fontData, UChar32 from, UChar32 to)
+        : m_fontData(fontData)
+    {
+        UnicodeRange range(from, to);
+        Vector<UnicodeRange> rangeVector;
+        rangeVector.append(range);
+        m_rangeSet = adoptRef(new UnicodeRangeSet(rangeVector));
+    }
+
+
+    bool contains(UChar32 testChar) const { return m_rangeSet->contains(testChar); }
+    bool isEntireRange() const { return m_rangeSet->isEntireRange(); }
+    PassRefPtr<UnicodeRangeSet> ranges() const { return m_rangeSet; }
+    bool hasFontData() const { return fontData(); }
+    PassRefPtr<SimpleFontData> fontData() const { return m_fontData; }
+
+private:
+    RefPtr<SimpleFontData> m_fontData;
+    RefPtr<UnicodeRangeSet> m_rangeSet;
+};
+
+} // namespace blink
+
+#endif