Initial import.

1 files changed, 55 insertions, 0 deletions

diff --git a/chromium/third_party/skia/include/utils/SkUnitMappers.h b/chromium/third_party/skia/include/utils/SkUnitMappers.h
new file mode 100644
index 00000000000..64aab5ddee7
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+++ b/chromium/third_party/skia/include/utils/SkUnitMappers.h
@@ -0,0 +1,55 @@
+
+/*
+ * Copyright 2008 The Android Open Source Project
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+
+#ifndef SkUnitMappers_DEFINED
+#define SkUnitMappers_DEFINED
+
+#include "SkUnitMapper.h"
+
+/** This discretizes the range [0...1) into N discret values.
+*/
+class SkDiscreteMapper : public SkUnitMapper {
+public:
+    SkDiscreteMapper(int segments);
+    // override from SkUnitMapper
+    virtual uint16_t mapUnit16(uint16_t x);
+
+    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDiscreteMapper)
+
+protected:
+    SkDiscreteMapper(SkFlattenableReadBuffer& );
+    virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;
+
+private:
+    int     fSegments;
+    SkFract fScale;    // computed from fSegments
+
+    typedef SkUnitMapper INHERITED;
+};
+
+/** This returns cos(x), to simulate lighting a sphere, where 0 maps to the
+    center of the sphere, and 1 maps to the edge.
+*/
+class SkCosineMapper : public SkUnitMapper {
+public:
+    SkCosineMapper() {}
+    // override from SkUnitMapper
+    virtual uint16_t mapUnit16(uint16_t x);
+
+    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkCosineMapper)
+
+protected:
+    SkCosineMapper(SkFlattenableReadBuffer&);
+
+private:
+
+    typedef SkUnitMapper INHERITED;
+};
+
+#endif