diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/src/animator/SkDrawGradient.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/src/animator/SkDrawGradient.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,218 @@
+
+/*
+ * Copyright 2006 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.
+ */
+
+
+#include "SkDrawGradient.h"
+#include "SkAnimateMaker.h"
+#include "SkAnimatorScript.h"
+#include "SkGradientShader.h"
+#include "SkUnitMapper.h"
+
+static SkScalar SkUnitToScalar(U16CPU x) {
+    return x / 65535.0f;
+}
+
+static U16CPU SkScalarToUnit(SkScalar x) {
+    SkScalar pin =  SkScalarPin(x, 0, SK_Scalar1);
+    return (int) (pin * 65535.0f);
+}
+
+class SkDrawGradientUnitMapper : public SkUnitMapper {
+public:
+    SkDrawGradientUnitMapper(SkAnimateMaker* maker, const char* script) : fMaker(maker), fScript(script) {
+    }
+
+    SK_DECLARE_UNFLATTENABLE_OBJECT()
+
+protected:
+    virtual uint16_t mapUnit16(uint16_t x) {
+        fUnit = SkUnitToScalar(x);
+        SkScriptValue value;
+        SkAnimatorScript engine(*fMaker, NULL, SkType_Float);
+        engine.propertyCallBack(GetUnitValue, &fUnit);
+        if (engine.evaluate(fScript, &value, SkType_Float))
+            x = SkScalarToUnit(value.fOperand.fScalar);
+        return x;
+    }
+
+    static bool GetUnitValue(const char* token, size_t len, void* unitPtr, SkScriptValue* value) {
+        if (SK_LITERAL_STR_EQUAL("unit", token, len)) {
+            value->fOperand.fScalar = *(SkScalar*) unitPtr;
+            value->fType = SkType_Float;
+            return true;
+        }
+        return false;
+    }
+
+    SkAnimateMaker* fMaker;
+    const char* fScript;
+    SkScalar fUnit;
+};
+
+
+#if SK_USE_CONDENSED_INFO == 0
+
+const SkMemberInfo SkDrawGradient::fInfo[] = {
+    SK_MEMBER_INHERITED,
+    SK_MEMBER_ARRAY(offsets, Float),
+    SK_MEMBER(unitMapper, String)
+};
+
+#endif
+
+DEFINE_GET_MEMBER(SkDrawGradient);
+
+SkDrawGradient::SkDrawGradient() : fUnitMapper(NULL) {
+}
+
+SkDrawGradient::~SkDrawGradient() {
+    for (int index = 0; index < fDrawColors.count(); index++)
+        delete fDrawColors[index];
+    delete fUnitMapper;
+}
+
+bool SkDrawGradient::addChild(SkAnimateMaker& , SkDisplayable* child) {
+    SkASSERT(child);
+    if (child->isColor()) {
+        SkDrawColor* color = (SkDrawColor*) child;
+        *fDrawColors.append() = color;
+        return true;
+    }
+    return false;
+}
+
+int SkDrawGradient::addPrelude() {
+    int count = fDrawColors.count();
+    fColors.setCount(count);
+    for (int index = 0; index < count; index++)
+        fColors[index] = fDrawColors[index]->color;
+    return count;
+}
+
+#ifdef SK_DUMP_ENABLED
+void SkDrawGradient::dumpRest(SkAnimateMaker* maker) {
+    dumpAttrs(maker);
+    //can a gradient have no colors?
+    bool closedYet = false;
+    SkDisplayList::fIndent += 4;
+    for (SkDrawColor** ptr = fDrawColors.begin(); ptr < fDrawColors.end(); ptr++) {
+        if (closedYet == false) {
+            SkDebugf(">\n");
+            closedYet = true;
+        }
+        SkDrawColor* color = *ptr;
+        color->dump(maker);
+    }
+    SkDisplayList::fIndent -= 4;
+    dumpChildren(maker, closedYet); //dumps the matrix if it has one
+}
+#endif
+
+void SkDrawGradient::onEndElement(SkAnimateMaker& maker) {
+    if (offsets.count() != 0) {
+        if (offsets.count() != fDrawColors.count()) {
+            maker.setErrorCode(SkDisplayXMLParserError::kGradientOffsetsDontMatchColors);
+            return;
+        }
+        if (offsets[0] != 0) {
+            maker.setErrorCode(SkDisplayXMLParserError::kGradientOffsetsMustStartWithZero);
+            return;
+        }
+        if (offsets[offsets.count()-1] != SK_Scalar1) {
+            maker.setErrorCode(SkDisplayXMLParserError::kGradientOffsetsMustEndWithOne);
+            return;
+        }
+        for (int i = 1; i < offsets.count(); i++) {
+            if (offsets[i] <= offsets[i-1]) {
+                maker.setErrorCode(SkDisplayXMLParserError::kGradientOffsetsMustIncrease);
+                return;
+            }
+            if (offsets[i] > SK_Scalar1) {
+                maker.setErrorCode(SkDisplayXMLParserError::kGradientOffsetsMustBeNoMoreThanOne);
+                return;
+            }
+        }
+    }
+    if (unitMapper.size() > 0)
+        fUnitMapper = new SkDrawGradientUnitMapper(&maker, unitMapper.c_str());
+    INHERITED::onEndElement(maker);
+}
+
+#if SK_USE_CONDENSED_INFO == 0
+
+const SkMemberInfo SkDrawLinearGradient::fInfo[] = {
+    SK_MEMBER_INHERITED,
+    SK_MEMBER_ARRAY(points, Float),
+};
+
+#endif
+
+DEFINE_GET_MEMBER(SkDrawLinearGradient);
+
+SkDrawLinearGradient::SkDrawLinearGradient() {
+}
+
+void SkDrawLinearGradient::onEndElement(SkAnimateMaker& maker)
+{
+    if (points.count() != 4)
+        maker.setErrorCode(SkDisplayXMLParserError::kGradientPointsLengthMustBeFour);
+    INHERITED::onEndElement(maker);
+}
+
+#ifdef SK_DUMP_ENABLED
+void SkDrawLinearGradient::dump(SkAnimateMaker* maker) {
+    dumpBase(maker);
+    dumpRest(maker);
+    }
+#endif
+
+SkShader* SkDrawLinearGradient::getShader() {
+    if (addPrelude() == 0 || points.count() != 4)
+        return NULL;
+    SkShader* shader = SkGradientShader::CreateLinear((SkPoint*)points.begin(),
+        fColors.begin(), offsets.begin(), fColors.count(), (SkShader::TileMode) tileMode, fUnitMapper);
+    SkAutoTDelete<SkShader> autoDel(shader);
+    addPostlude(shader);
+    (void)autoDel.detach();
+    return shader;
+}
+
+
+#if SK_USE_CONDENSED_INFO == 0
+
+const SkMemberInfo SkDrawRadialGradient::fInfo[] = {
+    SK_MEMBER_INHERITED,
+    SK_MEMBER(center, Point),
+    SK_MEMBER(radius, Float)
+};
+
+#endif
+
+DEFINE_GET_MEMBER(SkDrawRadialGradient);
+
+SkDrawRadialGradient::SkDrawRadialGradient() : radius(0) {
+    center.set(0, 0);
+}
+
+#ifdef SK_DUMP_ENABLED
+void SkDrawRadialGradient::dump(SkAnimateMaker* maker) {
+    dumpBase(maker);
+    dumpRest(maker);
+}
+#endif
+
+SkShader* SkDrawRadialGradient::getShader() {
+    if (addPrelude() == 0)
+        return NULL;
+    SkShader* shader = SkGradientShader::CreateRadial(center,
+        radius, fColors.begin(), offsets.begin(), fColors.count(), (SkShader::TileMode) tileMode, fUnitMapper);
+    SkAutoTDelete<SkShader> autoDel(shader);
+    addPostlude(shader);
+    (void)autoDel.detach();
+    return shader;
+}