Remove the remainder of the skia source code from the Chromium repo....

skia/animator/SkDrawGradient.cpp

-/* libs/graphics/animator/SkDrawGradient.cpp
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-#include "SkDrawGradient.h"
-#include "SkAnimateMaker.h"
-#include "SkAnimatorScript.h"
-#include "SkGradientShader.h"
-#include "SkUnitMapper.h"
-
-SkScalar SkUnitToScalar(U16CPU x) {
-#ifdef SK_SCALAR_IS_FLOAT
-    return x / 65535.0f;
-#else
-    return x + (x >> 8);
-#endif
-}
-
-U16CPU SkScalarToUnit(SkScalar x) {
-    SkScalar pin =  SkScalarPin(x, 0, SK_Scalar1);
-#ifdef SK_SCALAR_IS_FLOAT
-    return (int) (pin * 65535.0f);
-#else
-    return pin - (pin >= 32768);
-#endif
-}
-
-class SkGradientUnitMapper : public SkUnitMapper {
-public:
-    SkGradientUnitMapper(SkAnimateMaker* maker, const char* script) : fMaker(maker), fScript(script) {
-    }
-    
-    // overrides for SkFlattenable
-    virtual Factory getFactory() { return NULL; }
-    
-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 SkGradient::fInfo[] = {
-    SK_MEMBER_INHERITED,
-    SK_MEMBER_ARRAY(offsets, Float),
-    SK_MEMBER(unitMapper, String)
-};
-
-#endif
-
-DEFINE_GET_MEMBER(SkGradient);
-
-SkGradient::SkGradient() : fUnitMapper(NULL) {
-}
-
-SkGradient::~SkGradient() {
-    for (int index = 0; index < fDrawColors.count(); index++) 
-        delete fDrawColors[index];
-    delete fUnitMapper;
-}
-
-bool SkGradient::add(SkAnimateMaker& , SkDisplayable* child) {
-    SkASSERT(child);
-    if (child->isColor()) {
-        SkDrawColor* color = (SkDrawColor*) child;
-        *fDrawColors.append() = color;
-        return true;
-    }
-    return false;
-}
-
-int SkGradient::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 SkGradient::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 SkGradient::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 SkGradientUnitMapper(&maker, unitMapper.c_str());
-    INHERITED::onEndElement(maker);
-}
-
-#if SK_USE_CONDENSED_INFO == 0
-
-const SkMemberInfo SkLinearGradient::fInfo[] = {
-    SK_MEMBER_INHERITED,
-    SK_MEMBER_ARRAY(points, Float),
-};
-
-#endif
-
-DEFINE_GET_MEMBER(SkLinearGradient);
-
-SkLinearGradient::SkLinearGradient() { 
-}
-
-void SkLinearGradient::onEndElement(SkAnimateMaker& maker)
-{
-    if (points.count() != 4)
-        maker.setErrorCode(SkDisplayXMLParserError::kGradientPointsLengthMustBeFour);
-    INHERITED::onEndElement(maker);
-}
-
-#ifdef SK_DUMP_ENABLED
-void SkLinearGradient::dump(SkAnimateMaker* maker) {
-    dumpBase(maker);
-    dumpRest(maker);
-    }
-#endif
-
-SkShader* SkLinearGradient::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 SkRadialGradient::fInfo[] = {
-    SK_MEMBER_INHERITED,
-    SK_MEMBER(center, Point),
-    SK_MEMBER(radius, Float)
-};
-
-#endif
-
-DEFINE_GET_MEMBER(SkRadialGradient);
-
-SkRadialGradient::SkRadialGradient() : radius(0) { 
-    center.set(0, 0); 
-}
-
-#ifdef SK_DUMP_ENABLED
-void SkRadialGradient::dump(SkAnimateMaker* maker) {
-    dumpBase(maker);
-    dumpRest(maker);
-}
-#endif
-
-SkShader* SkRadialGradient::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;
-}