The Tor Browser: gfx/skia/trunk/src/animator/SkAnimatorScript2.cpp@a63d609f5ebe (annotated)

gfx/skia/trunk/src/animator/SkAnimatorScript2.cpp@a63d609f5ebe (annotated)

gfx/skia/trunk/src/animator/SkAnimatorScript2.cpp

Thu, 15 Jan 2015 15:55:04 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 15 Jan 2015 15:55:04 +0100
branch: TOR_BUG_9701
changeset 9: a63d609f5ebe
permissions: -rw-r--r--

Back out 97036ab72558 which inappropriately compared turds to third parties.

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SkAnimatorScript2.h"
 #include "SkAnimateBase.h"
 #include "SkAnimateMaker.h"
 #include "SkDisplayTypes.h"
 #include "SkExtras.h"
 #include "SkMemberInfo.h"
 #include "SkOpArray.h"
 #include "SkParse.h"
 #include "SkScript2.h"
 #include "SkScriptCallBack.h"
 static const SkDisplayEnumMap gEnumMaps[] = {
     { SkType_AddMode, "indirect|immediate" },
     { SkType_Align, "left|center|right" },
     { SkType_ApplyMode, "immediate|once" },
     { SkType_ApplyTransition, "reverse" },
     { SkType_BitmapEncoding, "jpeg|png" },
     { SkType_BitmapFormat, "none|A1|A8|Index8|RGB16|RGB32" },
     { SkType_Boolean, "false|true" },
     { SkType_Cap, "butt|round|square" },
     { SkType_EventCode, "none|up|down|left|right|back|end|OK|send|leftSoftKey|rightSoftKey|key0|key1|key2|key3|key4|key5|key6|key7|key8|key9|star|hash" },
     { SkType_EventKind, "none|keyChar|keyPress|mouseDown|mouseDrag|mouseMove|mouseUp|onEnd|onLoad|user" },
     { SkType_EventMode, "deferred|immediate" },
     { SkType_FillType, "winding|evenOdd" },
     { SkType_FilterType, "none|bilinear" },
     { SkType_FromPathMode, "normal|angle|position" },
     { SkType_Join, "miter|round|blunt" },
     { SkType_MaskFilterBlurStyle, "normal|solid|outer|inner" },
     { SkType_PathDirection, "cw|ccw" },
     { SkType_Style, "fill|stroke|strokeAndFill" },
     { SkType_TextBoxAlign, "start|center|end" },
     { SkType_TextBoxMode, "oneLine|lineBreak" },
     { SkType_TileMode, "clamp|repeat|mirror" },
     { SkType_Xfermode, "clear|src|dst|srcOver|dstOver|srcIn|dstIn|srcOut|dstOut|"
         "srcATop|dstATop|xor|darken|lighten" },
 };
 static int gEnumMapCount = SK_ARRAY_COUNT(gEnumMaps);
 class SkAnimatorScript_Box : public SkScriptCallBackConvert {
 public:
     SkAnimatorScript_Box() {}
     ~SkAnimatorScript_Box() {
         for (SkDisplayable** dispPtr = fTrackDisplayable.begin(); dispPtr < fTrackDisplayable.end(); dispPtr++)
             delete *dispPtr;
     }
     virtual bool convert(SkOperand2::OpType type, SkOperand2* operand) {
         SkDisplayable* displayable;
         switch (type) {
             case SkOperand2::kArray: {
                 SkDisplayArray* boxedValue = new SkDisplayArray(*operand->fArray);
                 displayable = boxedValue;
                 } break;
             case SkOperand2::kS32: {
                 SkDisplayInt* boxedValue = new SkDisplayInt;
                 displayable = boxedValue;
                 boxedValue->value = operand->fS32;
                 } break;
             case SkOperand2::kScalar: {
                 SkDisplayFloat* boxedValue = new SkDisplayFloat;
                 displayable = boxedValue;
                 boxedValue->value = operand->fScalar;
                 } break;
             case SkOperand2::kString: {
                 SkDisplayString* boxedValue = new SkDisplayString(*operand->fString);
                 displayable = boxedValue;
                 } break;
             case SkOperand2::kObject:
                 return true;
             default:
                 SkASSERT(0);
                 return false;
         }
         track(displayable);
         operand->fObject = (void*) displayable;
         return true;
     }
     virtual SkOperand2::OpType getReturnType(int index) {
         return SkOperand2::kObject;
     }
     virtual Type getType() const {
         return kBox;
     }
     void track(SkDisplayable* displayable) {
         SkASSERT(fTrackDisplayable.find(displayable) < 0);
         *fTrackDisplayable.append() = displayable;
     }
     SkTDDisplayableArray fTrackDisplayable;
 };
 class SkAnimatorScript_Enum : public SkScriptCallBackProperty {
 public:
     SkAnimatorScript_Enum(const char* tokens) : fTokens(tokens) {}
     virtual bool getConstValue(const char* name, int len, SkOperand2* value) {
         return SkAnimatorScript2::MapEnums(fTokens, name, len, &value->fS32);
     }
 private:
     const char* fTokens;
 };
     // !!! if type is string, call invoke
     // if any other type, return original value
         // distinction is undone: could do this by returning index == 0 only if param is string
         // still, caller of getParamTypes will attempt to convert param to string (I guess)
 class SkAnimatorScript_Eval : public SkScriptCallBackFunction {
 public:
     SkAnimatorScript_Eval(SkAnimatorScript2* engine) : fEngine(engine) {}
     virtual bool getIndex(const char* name, int len, size_t* result) {
         if (SK_LITERAL_STR_EQUAL("eval", name, len) != 0)
             return false;
         *result = 0;
         return true;
     }
     virtual void getParamTypes(SkIntArray(SkOperand2::OpType)* types) {
         types->setCount(1);
         SkOperand2::OpType* type = types->begin();
         type[0] = SkOperand2::kString;
     }
     virtual bool invoke(size_t index, SkOpArray* params, SkOperand2* answer) {
         SkAnimatorScript2 engine(fEngine->getMaker(), fEngine->getWorking(),
             SkAnimatorScript2::ToDisplayType(fEngine->getReturnType()));
         SkOperand2* op = params->begin();
         const char* script = op->fString->c_str();
         SkScriptValue2 value;
         return engine.evaluateScript(&script, &value);
         SkASSERT(value.fType == fEngine->getReturnType());
         *answer = value.fOperand;
         // !!! incomplete ?
         return true;
     }
 private:
     SkAnimatorScript2* fEngine;
 };
 class SkAnimatorScript_ID : public SkScriptCallBackProperty {
 public:
     SkAnimatorScript_ID(SkAnimatorScript2* engine) : fEngine(engine) {}
     virtual bool getIndex(const char* token, int len, size_t* result) {
         SkDisplayable* displayable;
         bool success = fEngine->getMaker().find(token, len, &displayable);
         if (success == false) {
             *result = 0;
         } else {
             *result = (size_t) displayable;
             SkDisplayable* working = fEngine->getWorking();
             if (displayable->canContainDependents() && working && working->isAnimate()) {
                 SkAnimateBase* animator = (SkAnimateBase*) working;
                 if (animator->isDynamic()) {
                     SkDisplayDepend* depend = (SkDisplayDepend* ) displayable;
                     depend->addDependent(working);
                 }
             }
         }
         return true;
     }
     virtual bool getResult(size_t ref, SkOperand2* answer) {
         answer->fObject = (void*) ref;
         return true;
     }
     virtual SkOperand2::OpType getReturnType(size_t index) {
         return index == 0 ? SkOperand2::kString : SkOperand2::kObject;
     }
 private:
     SkAnimatorScript2* fEngine;
 };
 class SkAnimatorScript_Member : public SkScriptCallBackMember {
 public:
     SkAnimatorScript_Member(SkAnimatorScript2* engine) : fEngine(engine) {}
     bool getMemberReference(const char* member, size_t len, void* object, SkScriptValue2* ref) {
         SkDisplayable* displayable = (SkDisplayable*) object;
         SkString name(member, len);
         SkDisplayable* named = displayable->contains(name);
         if (named) {
             ref->fType = SkOperand2::kObject;
             ref->fOperand.fObject = named;
             return true;
         }
         const SkMemberInfo* info = displayable->getMember(name.c_str());
         if (info == NULL)
             return false;    // !!! add additional error info?
         ref->fType = SkAnimatorScript2::ToOpType(info->getType());
         ref->fOperand.fObject = (void*) info;
         return true;
     }
     bool invoke(size_t ref, void* object, SkOperand2* value) {
         const SkMemberInfo* info = (const SkMemberInfo* ) ref;
         SkDisplayable* displayable = (SkDisplayable*) object;
         if (info->fType == SkType_MemberProperty) {
             if (displayable->getProperty2(info->propertyIndex(), value) == false) {
                 return false;
             }
         }
         return fEngine->evalMemberCommon(info, displayable, value);
     }
     SkAnimatorScript2* fEngine;
 };
 class SkAnimatorScript_MemberFunction : public SkScriptCallBackMemberFunction {
 public:
     SkAnimatorScript_MemberFunction(SkAnimatorScript2* engine) : fEngine(engine) {}
     bool getMemberReference(const char* member, size_t len, void* object, SkScriptValue2* ref) {
         SkDisplayable* displayable = (SkDisplayable*) object;
         SkString name(member, len);
         const SkMemberInfo* info = displayable->getMember(name.c_str());
         if (info == NULL || info->fType != SkType_MemberFunction)
             return false;    // !!! add additional error info?
         ref->fType = SkAnimatorScript2::ToOpType(info->getType());
         ref->fOperand.fObject = (void*) info;
         return true;
     }
     virtual void getParamTypes(SkIntArray(SkOperand2::OpType)* types) {
         types->setCount(3);
         SkOperand2::OpType* type = types->begin();
         type[0] = type[1] = type[2] = SkOperand2::kS32;
     }
     bool invoke(size_t ref, void* object, SkOpArray* params, SkOperand2* value)
     {
         const SkMemberInfo* info = (const SkMemberInfo* ) ref;
         SkDisplayable* displayable = (SkDisplayable*) object;
         displayable->executeFunction2(displayable, info->functionIndex(), params, info->getType(),
             value);
         return fEngine->evalMemberCommon(info, displayable, value);
     }
     SkAnimatorScript2* fEngine;
 };
 class SkAnimatorScript_NamedColor : public SkScriptCallBackProperty {
 public:
     virtual bool getConstValue(const char* name, int len, SkOperand2* value) {
         return SkParse::FindNamedColor(name, len, (SkColor*) &value->fS32) != NULL;
     }
 };
 class SkAnimatorScript_RGB : public SkScriptCallBackFunction {
 public:
     virtual bool getIndex(const char* name, int len, size_t* result) {
         if (SK_LITERAL_STR_EQUAL("rgb", name, len) != 0)
             return false;
         *result = 0;
         return true;
     }
     virtual void getParamTypes(SkIntArray(SkOperand2::OpType)* types) {
         types->setCount(3);
         SkOperand2::OpType* type = types->begin();
         type[0] = type[1] = type[2] = SkOperand2::kS32;
     }
     virtual bool invoke(size_t index, SkOpArray* params, SkOperand2* answer) {
         SkASSERT(index == 0);
         unsigned result = 0xFF000000;
         int shift = 16;
         for (int index = 0; index < 3; index++) {
             result |= SkClampMax(params->begin()[index].fS32, 255) << shift;
             shift -= 8;
         }
         answer->fS32 = result;
         return true;
     }
 };
 class SkAnimatorScript_Unbox : public SkScriptCallBackConvert {
 public:
     SkAnimatorScript_Unbox(SkAnimatorScript2* engine) : fEngine(engine) {}
     virtual bool convert(SkOperand2::OpType type, SkOperand2* operand) {
         SkASSERT(type == SkOperand2::kObject);
         SkDisplayable* displayable = (SkDisplayable*) operand->fObject;
         switch (displayable->getType()) {
             case SkType_Array: {
                 SkDisplayArray* boxedValue = (SkDisplayArray*) displayable;
                 operand->fArray = new SkOpArray(SkAnimatorScript2::ToOpType(boxedValue->values.getType()));
                 int count = boxedValue->values.count();
                 operand->fArray->setCount(count);
                 memcpy(operand->fArray->begin(), boxedValue->values.begin(), count * sizeof(SkOperand2));
                 fEngine->track(operand->fArray);
                 } break;
             case SkType_Boolean: {
                 SkDisplayBoolean* boxedValue = (SkDisplayBoolean*) displayable;
                 operand->fS32 = boxedValue->value;
                 } break;
             case SkType_Int: {
                 SkDisplayInt* boxedValue = (SkDisplayInt*) displayable;
                 operand->fS32 = boxedValue->value;
                 } break;
             case SkType_Float: {
                 SkDisplayFloat* boxedValue = (SkDisplayFloat*) displayable;
                 operand->fScalar = boxedValue->value;
                 } break;
             case SkType_String: {
                 SkDisplayString* boxedValue = (SkDisplayString*) displayable;
                 operand->fString = SkNEW_ARGS(SkString, (boxedValue->value));
                 } break;
             default: {
                 const char* id;
                 bool success = fEngine->getMaker().findKey(displayable, &id);
                 SkASSERT(success);
                 operand->fString = SkNEW_ARGS(SkString, (id));
             }
         }
         return true;
     }
     virtual SkOperand2::OpType getReturnType(int /*index*/, SkOperand2* operand) {
         SkDisplayable* displayable = (SkDisplayable*) operand->fObject;
         switch (displayable->getType()) {
             case SkType_Array:
                 return SkOperand2::kArray;
             case SkType_Int:
                 return SkOperand2::kS32;
             case SkType_Float:
                 return SkOperand2::kScalar;
             case SkType_String:
             default:
                 return SkOperand2::kString;
         }
     }
     virtual Type getType() const {
         return kUnbox;
     }
     SkAnimatorScript2* fEngine;
 };
 SkAnimatorScript2::SkAnimatorScript2(SkAnimateMaker& maker, SkDisplayable* working, SkDisplayTypes type) :
         SkScriptEngine2(ToOpType(type)), fMaker(maker), fWorking(working) {
     *fCallBackArray.append() = new SkAnimatorScript_Member(this);
     *fCallBackArray.append() = new SkAnimatorScript_MemberFunction(this);
     *fCallBackArray.append() = new SkAnimatorScript_Box();
     *fCallBackArray.append() = new SkAnimatorScript_Unbox(this);
     *fCallBackArray.append() = new SkAnimatorScript_ID(this);
     if (type == SkType_ARGB) {
         *fCallBackArray.append() = new SkAnimatorScript_RGB();
         *fCallBackArray.append() = new SkAnimatorScript_NamedColor();
     }
     if (SkDisplayType::IsEnum(&maker, type)) {
         // !!! for SpiderMonkey, iterate through the enum values, and map them to globals
         const SkDisplayEnumMap& map = GetEnumValues(type);
         *fCallBackArray.append() = new SkAnimatorScript_Enum(map.fValues);
     }
     *fCallBackArray.append() = new SkAnimatorScript_Eval(this);
 #if 0        // !!! no extra support for now
     for (SkExtras** extraPtr = maker.fExtras.begin(); extraPtr < maker.fExtras.end(); extraPtr++) {
         SkExtras* extra = *extraPtr;
         if (extra->fExtraCallBack)
             *fCallBackArray.append() = new propertyCallBack(extra->fExtraCallBack, extra->fExtraStorage);
     }
 #endif
 }
 SkAnimatorScript2::~SkAnimatorScript2() {
     SkScriptCallBack** end = fCallBackArray.end();
     for (SkScriptCallBack** ptr = fCallBackArray.begin(); ptr < end; ptr++)
         delete *ptr;
 }
 bool SkAnimatorScript2::evalMemberCommon(const SkMemberInfo* info,
         SkDisplayable* displayable, SkOperand2* value) {
     SkDisplayTypes original;
     SkDisplayTypes type = original = (SkDisplayTypes) info->getType();
     if (info->fType == SkType_Array)
         type = SkType_Array;
     switch (type) {
         case SkType_ARGB:
             type = SkType_Int;
         case SkType_Boolean:
         case SkType_Int:
         case SkType_MSec:
         case SkType_Float:
             SkASSERT(info->getCount() == 1);
             if (info->fType != SkType_MemberProperty && info->fType != SkType_MemberFunction)
                 value->fS32 = *(int32_t*) info->memberData(displayable);    // OK for SkScalar too
             if (type == SkType_MSec) {
                 value->fScalar = SkScalarDiv((SkScalar) value->fS32, 1000); // dividing two ints is the same as dividing two scalars
                 type = SkType_Float;
             }
             break;
         case SkType_String: {
             SkString* displayableString;
             if (info->fType != SkType_MemberProperty && info->fType != SkType_MemberFunction) {
                 info->getString(displayable, &displayableString);
                 value->fString = new SkString(*displayableString);
             }
             } break;
         case SkType_Array: {
             SkASSERT(info->fType != SkType_MemberProperty); // !!! incomplete
             SkTDOperandArray* displayableArray = (SkTDOperandArray*) info->memberData(displayable);
             if (displayable->getType() == SkType_Array) {
                 SkDisplayArray* typedArray = (SkDisplayArray*) displayable;
                 original = typedArray->values.getType();
             }
             SkASSERT(original != SkType_Unknown);
             SkOpArray* array = value->fArray = new SkOpArray(ToOpType(original));
             track(array);
             int count = displayableArray->count();
             if (count > 0) {
                 array->setCount(count);
                 memcpy(array->begin(), displayableArray->begin(), count * sizeof(SkOperand2));
             }
             } break;
         default:
             SkASSERT(0); // unimplemented
     }
     return true;
 }
 const SkDisplayEnumMap& SkAnimatorScript2::GetEnumValues(SkDisplayTypes type) {
     int index = SkTSearch<SkDisplayTypes>(&gEnumMaps[0].fType, gEnumMapCount, type,
         sizeof(SkDisplayEnumMap));
     SkASSERT(index >= 0);
     return gEnumMaps[index];
 }
 SkDisplayTypes SkAnimatorScript2::ToDisplayType(SkOperand2::OpType type) {
     int val = type;
     switch (val) {
         case SkOperand2::kNoType:
             return SkType_Unknown;
         case SkOperand2::kS32:
             return SkType_Int;
         case SkOperand2::kScalar:
             return SkType_Float;
         case SkOperand2::kString:
             return SkType_String;
         case SkOperand2::kArray:
             return SkType_Array;
         case SkOperand2::kObject:
             return SkType_Displayable;
         default:
             SkASSERT(0);
             return SkType_Unknown;
     }
 }
 SkOperand2::OpType SkAnimatorScript2::ToOpType(SkDisplayTypes type) {
     if (SkDisplayType::IsDisplayable(NULL /* fMaker */, type))
         return SkOperand2::kObject;
     if (SkDisplayType::IsEnum(NULL /* fMaker */, type))
         return SkOperand2::kS32;
     switch (type) {
         case SkType_ARGB:
         case SkType_MSec:
         case SkType_Int:
             return SkOperand2::kS32;
         case SkType_Float:
         case SkType_Point:
         case SkType_3D_Point:
             return SkOperand2::kScalar;
         case SkType_Base64:
         case SkType_DynamicString:
         case SkType_String:
             return SkOperand2::kString;
         case SkType_Array:
             return SkOperand2::kArray;
         case SkType_Unknown:
             return SkOperand2::kNoType;
         default:
             SkASSERT(0);
             return SkOperand2::kNoType;
     }
 }
 bool SkAnimatorScript2::MapEnums(const char* ptr, const char* match, size_t len, int* value) {
     int index = 0;
     bool more = true;
     do {
         const char* last = strchr(ptr, '|');
         if (last == NULL) {
             last = &ptr[strlen(ptr)];
             more = false;
         }
         size_t length = last - ptr;
         if (len == length && strncmp(ptr, match, length) == 0) {
             *value = index;
             return true;
         }
         index++;
         ptr = last + 1;
     } while (more);
     return false;
 }
 #if defined SK_DEBUG
 #include "SkAnimator.h"
 static const char scriptTestSetup[]  =
 "<screenplay>"
     "<apply>"
         "<paint>"
             "<emboss id='emboss' direction='[1,1,1]'  />"
         "</paint>"
         "<animateField id='animation' field='direction' target='emboss' from='[1,1,1]' to='[-1,1,1]' dur='1'/>"
         "<set lval='direction[0]' target='emboss' to='-1' />"
     "</apply>"
     "<color id='testColor' color='0 ? rgb(0,0,0) : rgb(255,255,255)' />"
     "<color id='xColor' color='rgb(12,34,56)' />"
     "<typedArray id='emptyArray' />"
     "<typedArray id='intArray' values='[1, 4, 6]' />"
     "<s32 id='idx' value='2' />"
     "<s32 id='idy' value='2' />"
     "<string id='alpha' value='abc' />"
     "<rectangle id='testRect' left='Math.cos(0)' top='2' right='12' bottom='5' />"
     "<event id='evt'>"
         "<input name='x' />"
         "<apply scope='idy'>"
             "<set field='value' to='evt.x.s32' />"
         "</apply>"
     "</event>"
 "</screenplay>";
 static const SkScriptNAnswer scriptTests[]  = {
     {    "alpha+alpha", SkType_String, 0, 0, "abcabc" },
     {    "0 ? Math.sin(0) : 1", SkType_Int, 1 },
     {    "intArray[4]", SkType_Unknown },
     {    "emptyArray[4]", SkType_Unknown },
     {    "idx", SkType_Int, 2 },
     {    "intArray.length", SkType_Int, 3 },
     {    "intArray.values[0]", SkType_Int, 1 },
     {    "intArray[0]", SkType_Int, 1 },
     {    "idx.value", SkType_Int, 2 },
     {    "alpha.value", SkType_String, 0, 0, "abc" },
     {    "alpha", SkType_String, 0, 0, "abc" },
     {    "alpha.value+alpha.value", SkType_String, 0, 0, "abcabc" },
     {    "alpha+idx", SkType_String, 0, 0, "abc2" },
     {    "idx+alpha", SkType_String, 0, 0, "2abc" },
     {    "intArray[idx]", SkType_Int, 6 },
     {    "alpha.slice(1,2)", SkType_String, 0, 0, "b" },
     {    "alpha.value.slice(1,2)", SkType_String, 0, 0, "b" },
     {    "Math.sin(0)", SkType_Float, 0, SkIntToScalar(0) },
     {    "testRect.left+2", SkType_Float, 0, SkIntToScalar(3) },
     {    "0 ? intArray[0] : 1", SkType_Int, 1 },
     {    "0 ? intArray.values[0] : 1", SkType_Int, 1 },
     {    "0 ? idx : 1", SkType_Int, 1 },
     {    "0 ? idx.value : 1", SkType_Int, 1 },
     {    "0 ? alpha.slice(1,2) : 1", SkType_Int, 1 },
     {    "0 ? alpha.value.slice(1,2) : 1", SkType_Int, 1 },
     { "idy", SkType_Int, 3 }
 };
 #define SkScriptNAnswer_testCount    SK_ARRAY_COUNT(scriptTests)
 void SkAnimatorScript2::UnitTest() {
 #if defined(SK_SUPPORT_UNITTEST)
     SkAnimator animator;
     SkASSERT(animator.decodeMemory(scriptTestSetup, sizeof(scriptTestSetup)-1));
     SkEvent evt;
     evt.setString("id", "evt");
     evt.setS32("x", 3);
     animator.doUserEvent(evt);
     // set up animator with memory script above, then run value tests
     for (int index = 0; index < SkScriptNAnswer_testCount; index++) {
         SkAnimatorScript2 engine(*animator.fMaker, NULL, scriptTests[index].fType);
         SkScriptValue2 value;
         const char* script = scriptTests[index].fScript;
         bool success = engine.evaluateScript(&script, &value);
         if (success == false) {
             SkASSERT(scriptTests[index].fType == SkType_Unknown);
             continue;
         }
         SkASSERT(value.fType == ToOpType(scriptTests[index].fType));
         SkScalar error;
         switch (value.fType) {
             case SkOperand2::kS32:
                 SkASSERT(value.fOperand.fS32 == scriptTests[index].fIntAnswer);
                 break;
             case SkOperand2::kScalar:
                 error = SkScalarAbs(value.fOperand.fScalar - scriptTests[index].fScalarAnswer);
                 SkASSERT(error < SK_Scalar1 / 10000);
                 break;
             case SkOperand2::kString:
                 SkASSERT(value.fOperand.fString->equals(scriptTests[index].fStringAnswer));
                 break;
             default:
                 SkASSERT(0);
         }
     }
 #endif
 }
 #endif

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gfx/skia/trunk/src/animator/SkAnimatorScript2.cpp@a63d609f5ebe (annotated)

gfx/skia/trunk/src/animator/SkAnimatorScript2.cpp