Index: third_party/WebKit/Source/platform/fonts/shaping/ShapeResultBuffer.h |
diff --git a/third_party/WebKit/Source/platform/fonts/shaping/ShapeResultBuffer.h b/third_party/WebKit/Source/platform/fonts/shaping/ShapeResultBuffer.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..a0394e46b20be605130220c58135b2871cd0dd48 |
--- /dev/null |
+++ b/third_party/WebKit/Source/platform/fonts/shaping/ShapeResultBuffer.h |
@@ -0,0 +1,57 @@ |
+// Copyright 2016 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef ShapeResultBuffer_h |
+#define ShapeResultBuffer_h |
+ |
+#include "platform/fonts/shaping/ShapeResult.h" |
+#include "wtf/Allocator.h" |
+#include "wtf/RefPtr.h" |
+#include "wtf/Vector.h" |
+ |
+namespace blink { |
+ |
+class GlyphBuffer; |
+class TextRun; |
+ |
+class ShapeResultBuffer { |
+ WTF_MAKE_NONCOPYABLE(ShapeResultBuffer); |
+ STACK_ALLOCATED(); |
+public: |
+ ShapeResultBuffer() |
+ : m_hasVerticalOffsets(false) { } |
+ |
+ void appendResult(PassRefPtr<ShapeResult> result) |
+ { |
+ m_hasVerticalOffsets |= result->hasVerticalOffsets(); |
+ m_results.append(result); |
+ } |
+ |
+ bool hasVerticalOffsets() const { return m_hasVerticalOffsets; } |
+ |
+ float fillGlyphBuffer(GlyphBuffer*, const TextRun&, unsigned from, unsigned to) const; |
+ float fillGlyphBufferForTextEmphasis(GlyphBuffer*, const TextRun&, |
+ const GlyphData* emphasisData, unsigned from, unsigned to) const; |
+ int offsetForPosition(const TextRun&, float targetX) const; |
+ FloatRect selectionRect(TextDirection, float totalWidth, const FloatPoint&, int height, |
+ unsigned from, unsigned to) const; |
+ |
+private: |
+ float fillFastHorizontalGlyphBuffer(GlyphBuffer*, TextDirection) const; |
+ |
+ template<TextDirection> |
+ static float fillGlyphBufferForRun(GlyphBuffer*, const ShapeResult::RunInfo*, |
+ float initialAdvance, unsigned from, unsigned to, unsigned runOffset); |
+ static float fillGlyphBufferForTextEmphasisRun(GlyphBuffer*, const ShapeResult::RunInfo*, |
+ const TextRun&, const GlyphData*, float initialAdvance, unsigned from, unsigned to, |
+ unsigned runOffset); |
+ |
+ // Empirically, cases where we get more than 50 ShapeResults are extremely rare. |
+ Vector<RefPtr<ShapeResult>, 64>m_results; |
+ bool m_hasVerticalOffsets; |
+}; |
+ |
+} // namespace blink |
+ |
+#endif // ShapeResultBuffer_h |