C++ SkDisplayable::getType方法代码示例

void SkDisplayEvent::populateInput(SkAnimateMaker& maker, const SkEvent& fEvent) {
    const SkMetaData& meta = fEvent.getMetaData();
    SkMetaData::Iter iter(meta);
    SkMetaData::Type    type;
    int number;
    const char* name;
    while ((name = iter.next(&type, &number)) != NULL) {
        if (name[0] == '\0')
            continue;
        SkDisplayable* displayable;
        SkInput* input;
        for (int index = 0; index < fChildren.count(); index++) {
            displayable = fChildren[index];
            if (displayable->getType() != SkType_Input)
                continue;
            input = (SkInput*) displayable;
            if (input->name.equals(name))
                goto found;
        }
        if (!maker.find(name, &displayable) || displayable->getType() != SkType_Input)
            continue;
        input = (SkInput*) displayable;
    found:
        switch (type) {
            case SkMetaData::kS32_Type:
                meta.findS32(name, &input->fInt);
                break;
            case SkMetaData::kScalar_Type:
                meta.findScalar(name, &input->fFloat);
                break;
            case SkMetaData::kPtr_Type:
                SkASSERT(0);
                break; // !!! not handled for now
            case SkMetaData::kString_Type:
                input->string.set(meta.findString(name));
                break;
            default:
                SkASSERT(0);
        }
    }
    // re-evaluate all animators that may have built their values from input strings
    for (SkDisplayable** childPtr = fChildren.begin(); childPtr < fChildren.end(); childPtr++) {
        SkDisplayable* displayable = *childPtr;
        if (displayable->isApply() == false)
            continue;
        SkApply* apply = (SkApply*) displayable;
        apply->refresh(maker);
    }
}

void SkAnimateMaker::loadMovies() {
    for (SkDisplayable** dispPtr = fMovies.begin(); dispPtr < fMovies.end(); dispPtr++) {
        SkDisplayable* displayable = *dispPtr;
        SkASSERT(displayable->getType() == SkType_Movie);
        SkDisplayMovie* movie = (SkDisplayMovie*) displayable;
        SkAnimateMaker* movieMaker = movie->fMovie.fMaker;
        movieMaker->fEvents.doEvent(*movieMaker, SkDisplayEvent::kOnload, NULL);
        movieMaker->fEvents.removeEvent(SkDisplayEvent::kOnload, NULL);
        movieMaker->loadMovies();
    }
}

bool SkAnimatorScript::Unbox(void* m, SkScriptValue* scriptValue) {
    SkAnimateMaker* maker = (SkAnimateMaker*) m;
    SkASSERT((unsigned) scriptValue->fType == (unsigned) SkType_Displayable);
    SkDisplayable* displayable = (SkDisplayable*) scriptValue->fOperand.fObject;
    SkDisplayTypes type = displayable->getType();
    switch (displayable->getType()) {
        case SkType_Array: {
            SkDisplayArray* boxedValue = (SkDisplayArray*) displayable;
            scriptValue->fOperand.fArray = &boxedValue->values;
            } break;
        case SkType_Boolean: {
            SkDisplayBoolean* boxedValue = (SkDisplayBoolean*) displayable;
            scriptValue->fOperand.fS32 = boxedValue->value;
            } break;
        case SkType_Int: {
            SkDisplayInt* boxedValue = (SkDisplayInt*) displayable;
            scriptValue->fOperand.fS32 = boxedValue->value;
            } break;
        case SkType_Float: {
            SkDisplayFloat* boxedValue = (SkDisplayFloat*) displayable;
            scriptValue->fOperand.fScalar = boxedValue->value;
            } break;
        case SkType_String: {
            SkDisplayString* boxedValue = (SkDisplayString*) displayable;
            scriptValue->fOperand.fString = SkNEW_ARGS(SkString, (boxedValue->value));
            } break;
        default: {
            const char* id = NULL;
            bool success = maker->findKey(displayable, &id);
            SkASSERT(success);
            scriptValue->fOperand.fString = SkNEW_ARGS(SkString, (id));
            type = SkType_String;
        }
    }
    scriptValue->fType = type;
    return true;
}

bool SkDisplayXMLParser::onStartElementLen(const char name[], size_t len) {
    fCurrDisplayable = NULL; // init so we'll ignore attributes if we exit early

    if (strncasecmp(name, "screenplay", len) == 0) {
        fInSkia = true;
        if (fInInclude == false)
            fMaker.idsSet(name, len, &fMaker.fScreenplay);
        return false;
    }
    if (fInSkia == false)
        return false;

    SkDisplayable* displayable = fMaker.createInstance(name, len);
    if (displayable == NULL) {
        fError->setNoun(name, len);
        fError->setCode(SkXMLParserError::kUnknownElement);
        return true;
    }
    SkDisplayTypes type = displayable->getType();
    Parent record = { displayable, type };
    *fParents.append() = record;
    if (fParents.count() == 1)
        fMaker.childrenAdd(displayable);
    else {
        Parent* parent = fParents.end() - 2;
        if (displayable->setParent(parent->fDisplayable)) {
            fError->setNoun(name, len);
            getError()->setCode(SkDisplayXMLParserError::kParentElementCantContain);
            return true;
        }
    }

    // set these for subsequent calls to addAttribute()
    fCurrDisplayable = displayable;
    fCurrType = type;
    return false;
}

bool SkDisplayXMLParser::onAddAttributeLen(const char attrName[], const char attrValue[], 
                                        size_t attrValueLen)
{
    if (fCurrDisplayable == NULL)    // this signals we should ignore attributes for this element
        return strncmp(attrName, "xmlns", sizeof("xmlns") - 1) != 0;
    SkDisplayable*  displayable = fCurrDisplayable;
    SkDisplayTypes  type = fCurrType;

    if (strcmp(attrName, "id") == 0) {
        if (fMaker.find(attrValue, attrValueLen, NULL)) {
            fError->setNoun(attrValue, attrValueLen);
            fError->setCode(SkXMLParserError::kDuplicateIDs);
            return true;
        }
#ifdef SK_DEBUG
        displayable->_id.set(attrValue, attrValueLen);
        displayable->id = displayable->_id.c_str();
#endif
        fMaker.idsSet(attrValue, attrValueLen, displayable);
        int parentIndex = fParents.count() - 1;
        if (parentIndex > 0) {
            SkDisplayable* parent = fParents[parentIndex - 1].fDisplayable;
            parent->setChildHasID();
        }
        return false;
    }
    const char* name = attrName;
    const SkMemberInfo* info = SkDisplayType::GetMember(&fMaker, type, &name);
    if (info == NULL) {
        fError->setNoun(name);
        fError->setCode(SkXMLParserError::kUnknownAttributeName);
        return true;
    }
    if (info->setValue(fMaker, NULL, 0, info->getCount(), displayable, info->getType(), attrValue,
            attrValueLen))
        return false;
    if (fMaker.fError.hasError()) {
        fError->setNoun(attrValue, attrValueLen);
        return true;
    }
    SkDisplayable* ref = NULL;
    if (fMaker.find(attrValue, attrValueLen, &ref) == false) {
        ref = fMaker.createInstance(attrValue, attrValueLen);
        if (ref == NULL) {
            fError->setNoun(attrValue, attrValueLen);
            fError->setCode(SkXMLParserError::kErrorInAttributeValue);
            return true;
        } else
            fMaker.helperAdd(ref);
    }
    if (info->fType != SkType_MemberProperty) {
        fError->setNoun(name);
        fError->setCode(SkXMLParserError::kUnknownAttributeName);
        return true;
    }
    SkScriptValue scriptValue;
    scriptValue.fOperand.fDisplayable = ref;
    scriptValue.fType = ref->getType();
    displayable->setProperty(info->propertyIndex(), scriptValue);
    return false;
}

SkElementType SkAnimator::getElementType(const SkDisplayable* ae) {
    SkDisplayable* element = (SkDisplayable*) ae;
    const SkMemberInfo* info = SkDisplayType::GetMembers(fMaker, element->getType(), nullptr);
    return (SkElementType) SkDisplayType::Find(fMaker, info);
}

JSBool SkJSDisplayable::SetProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp) {
    if (JSVAL_IS_INT(id) == 0)
        return JS_TRUE; 
    SkJSDisplayable *p = (SkJSDisplayable *) JS_GetPrivate(cx, obj);
    SkDisplayable* displayable = p->fDisplayable;
    SkDisplayTypes displayableType = displayable->getType();
    int members;
    const SkMemberInfo* info = SkDisplayType::GetMembers(NULL /* fMaker */, displayableType, &members);
    int idIndex = JSVAL_TO_INT(id);
    SkASSERT(idIndex >= 0 && idIndex < members);
    info = &info[idIndex];
    SkDisplayTypes infoType = info->getType();
    SkScalar scalar = 0;
    S32 s32 = 0;
    SkString string;
    JSString* str;
    jsval value = *vp;
    switch (infoType) {
        case SkType_Boolean:
            s32 = JSVAL_TO_BOOLEAN(value);
            break;
        case SkType_Color:
        case SkType_S32:
            s32 = JSVAL_TO_INT(value);
            break;
        case SkType_Scalar:
            if (JSVAL_IS_INT(value))
                scalar = SkIntToScalar(JSVAL_TO_INT(value));
            else {
                SkASSERT(JSVAL_IS_DOUBLE(value));
#ifdef SK_SCALAR_IS_FLOAT
                scalar = (float) *(double*) JSVAL_TO_DOUBLE(value);
#else
                scalar = (SkFixed)  (*(double*)JSVAL_TO_DOUBLE(value) * 65536.0);
#endif
            }
            break;
        case SkType_String:
            str = JS_ValueToString(cx, value);
            string.set(JS_GetStringBytes(str));
            break;
        default:
            SkASSERT(0); // !!! unimplemented
    }
    if (info->fType == SkType_MemberProperty) {
        switch (infoType) {
            case SkType_Scalar: {
                SkScriptValue scriptValue;
                scriptValue.fType = SkType_Scalar;
                scriptValue.fOperand.fScalar = scalar;
                displayable->setProperty(-1 - (int) info->fOffset, scriptValue);
                } break;
            default:
                SkASSERT(0); // !!! unimplemented
        }
    } else {
        SkASSERT(info->fCount == 1);
        switch (infoType) {
            case SkType_Boolean:
            case SkType_Color:
            case SkType_S32:
                s32 = *(S32*) ((const char*) displayable + info->fOffset);
                break;
            case SkType_String:
                info->setString(displayable, &string);
                break;
            case SkType_Scalar:
                SkOperand operand;
                operand.fScalar = scalar;
                info->setValue(displayable, &operand, 1);
                break;
            default:
                SkASSERT(0); // !!! unimplemented
        }
    }
    return JS_TRUE;
}

JSBool SkJSDisplayable::GetProperty(JSContext *cx, JSObject *obj, jsval id,
                                 jsval *vp)
{
    if (JSVAL_IS_INT(id) == 0)
        return JS_TRUE; 
    SkJSDisplayable *p = (SkJSDisplayable *) JS_GetPrivate(cx, obj);
    SkDisplayable* displayable = p->fDisplayable;
    SkDisplayTypes displayableType = displayable->getType();
    int members;
    const SkMemberInfo* info = SkDisplayType::GetMembers(NULL /* fMaker */, displayableType, &members);
    int idIndex = JSVAL_TO_INT(id);
    SkASSERT(idIndex >= 0 && idIndex < members);
    info = &info[idIndex];
    SkDisplayTypes infoType = (SkDisplayTypes) info->fType;
    SkScalar scalar = 0;
    S32 s32 = 0;
    SkString* string= NULL;
    JSString *str;
    if (infoType == SkType_MemberProperty) {
        infoType = info->propertyType();
        switch (infoType) {
            case SkType_Scalar: {
                SkScriptValue scriptValue;
                bool success = displayable->getProperty(info->propertyIndex(), &scriptValue);
                SkASSERT(scriptValue.fType == SkType_Scalar);
                scalar = scriptValue.fOperand.fScalar;
                } break;
            default:
                SkASSERT(0); // !!! unimplemented
        }
    } else {
        SkASSERT(info->fCount == 1);
        switch (infoType) {
            case SkType_Boolean:
            case SkType_Color:
            case SkType_S32:
                s32 = *(S32*) info->memberData(displayable);
                break;
            case SkType_String:
                info->getString(displayable, &string);
                break;
            case SkType_Scalar:
                SkOperand operand;
                info->getValue(displayable, &operand, 1);
                scalar = operand.fScalar;
                break;
            default:
                SkASSERT(0); // !!! unimplemented
        }
    }
    switch (infoType) {
        case SkType_Boolean:
            *vp = BOOLEAN_TO_JSVAL(s32);
            break;
        case SkType_Color:
        case SkType_S32:
            *vp = INT_TO_JSVAL(s32);
            break;
        case SkType_Scalar:
            if (SkScalarFraction(scalar) == 0)
                *vp = INT_TO_JSVAL(SkScalarFloor(scalar));
            else
#ifdef SK_SCALAR_IS_FLOAT
            *vp = DOUBLE_TO_JSVAL(scalar);
#else
            *vp = DOUBLE_TO_JSVAL(scalar / 65536.0f );
#endif
            break;
        case SkType_String:
            str = JS_NewStringCopyN(cx, string->c_str(), string->size());
            *vp = STRING_TO_JSVAL(str);
            break;
        default:
            SkASSERT(0); // !!! unimplemented
    }
    return JS_TRUE;
}