C++ SkApply::activate方法代码示例

 virtual SkScalar next(SkPath* dst, SkScalar distance, SkPathMeasure& )
 {
     fMaker->setExtraPropertyCallBack(fDraw->fType, GetDistance, &distance);
     SkDrawPath* drawPath = NULL;
     if (fDraw->addPath->isPath()) {
         drawPath = (SkDrawPath*) fDraw->addPath;
     } else {
         SkApply* apply = (SkApply*) fDraw->addPath;
         apply->refresh(*fMaker);
         apply->activate(*fMaker);
         apply->interpolate(*fMaker, SkScalarMulRound(distance, 1000));
         drawPath = (SkDrawPath*) apply->getScope();
     }
     SkMatrix m;
     m.reset();
     if (fDraw->addMatrix) {
         SkDrawMatrix* matrix;
         if (fDraw->addMatrix->getType() == SkType_Matrix)
             matrix = (SkDrawMatrix*) fDraw->addMatrix;
         else {
             SkApply* apply = (SkApply*) fDraw->addMatrix;
             apply->refresh(*fMaker);
             apply->activate(*fMaker);
             apply->interpolate(*fMaker, SkScalarMulRound(distance, 1000));
             matrix = (SkDrawMatrix*) apply->getScope();
         }
     }
     SkScalar result = 0;
     SkAnimatorScript::EvaluateFloat(*fMaker, NULL, fDraw->spacing.c_str(), &result);
     if (drawPath)
         dst->addPath(drawPath->getPath(), m);
     fMaker->clearExtraPropertyCallBack(fDraw->fType);
     return result;
 }

void SkApply::enableCreate(SkAnimateMaker& maker) {
    SkString newID;
    for (int step = 0; step <= steps; step++) {
        fLastTime = step * SK_MSec1;
        bool success = maker.computeID(scope, this, &newID);
        if (success == false)
            return;
        if (maker.find(newID.c_str(), NULL))
            continue;
        SkApply* copy = (SkApply*) deepCopy(&maker); // work on copy of animator state
        if (mode == kMode_create)
            copy->mode = (Mode) -1;
        SkDrawable* copyScope = copy->scope = (SkDrawable*) scope->deepCopy(&maker);
        *fScopes.append() = copyScope;
        if (copyScope->resolveIDs(maker, scope, this)) {
            step = steps; // quit
            goto next; // resolveIDs failed
        }
        if (newID.size() > 0) 
            maker.setID(copyScope, newID);
        if (copy->resolveIDs(maker, this, this)) { // fix up all fields, including target
            step = steps; // quit
            goto next; // resolveIDs failed
        }
        copy->activate(maker);
        copy->interpolate(maker, step * SK_MSec1);
        maker.removeActive(copy->fActive);
    next:
        delete copy;
    }
}

    virtual void next(const SkPoint& loc, int u, int v, SkPath* dst)
    {
        fLoc = loc;
        fU = u;
        fV = v;
        SkDrawPath* drawPath;
        fMaker->setExtraPropertyCallBack(fDraw->fType, Get2D, this);
        if (fDraw->addPath->isPath()) {
            drawPath = (SkDrawPath*) fDraw->addPath;
        } else {
            SkApply* apply = (SkApply*) fDraw->addPath;
            apply->refresh(*fMaker);
            apply->activate(*fMaker);
            apply->interpolate(*fMaker, v);
            drawPath = (SkDrawPath*) apply->getScope();
        }
        if (drawPath == NULL)
            goto clearCallBack;
        if (fDraw->matrix) {
            SkDrawMatrix* matrix;
            if (fDraw->matrix->getType() == SkType_Matrix) 
                matrix = (SkDrawMatrix*) fDraw->matrix;
            else {
                SkApply* apply = (SkApply*) fDraw->matrix;
                apply->activate(*fMaker);
                apply->interpolate(*fMaker, v);
                matrix = (SkDrawMatrix*) apply->getScope();
            }
            if (matrix) {
                dst->addPath(drawPath->getPath(), matrix->getMatrix());
                goto clearCallBack;
            }
        }
        dst->addPath(drawPath->getPath());
clearCallBack:
        fMaker->clearExtraPropertyCallBack(fDraw->fType);
    }

bool SkApply::enable(SkAnimateMaker& maker) {
    fEnabled = true;
    bool initialized = fActive != NULL;
    if (dynamicScope.size() > 0)
        enableDynamic(maker);
    if (maker.fError.hasError()) 
        return false;
    int animators = fAnimators.count();
    int index;
    for (index = 0; index < animators; index++) {
        SkAnimateBase* animator = fAnimators[index];
        animator->fStart = maker.fEnableTime;
        animator->fResetPending = animator->fReset;
    }
    if (scope && scope->isApply())
        ((SkApply*) scope)->setEmbedded();
/*  if (mode == kMode_once) {
        if (scope) {
            activate(maker);
            interpolate(maker, maker.fEnableTime);
            inactivate(maker);
        }
        return true;
    }*/
    if ((mode == kMode_immediate || mode == kMode_create) && scope == NULL)
        return false;   // !!! error?
    bool enableMe = scope && (scope->hasEnable() || scope->isApply() || scope->isDrawable() == false);
    if (mode == kMode_immediate && enableMe || mode == kMode_create)
        activate(maker);    // for non-drawables like post, prime them here
    if (mode == kMode_immediate && enableMe)
        fActive->enable();
    if (mode == kMode_create && scope != NULL) {
        enableCreate(maker);
        return true;
    }
    if (mode == kMode_immediate) {
        return scope->isApply() || scope->isDrawable() == false;
    }
    refresh(maker);
    SkDisplayList& displayList = maker.fDisplayList;
    SkDrawable* drawable;
#if defined SK_DEBUG && defined SK_DEBUG_ANIMATION_TIMING
    SkString debugOut;
    SkMSec time = maker.getAppTime();
    debugOut.appendS32(time - maker.fDebugTimeBase);
    debugOut.append(" apply enable id=");
    debugOut.append(_id);
    debugOut.append("; start=");
    debugOut.appendS32(maker.fEnableTime - maker.fDebugTimeBase);
    SkDebugf("%s\n", debugOut.c_str());
#endif
    if (scope == NULL || scope->isApply() || scope->getType() == SkType_Movie || scope->isDrawable() == false) {
        activate(maker);    // for non-drawables like post, prime them here
        if (initialized) {
            append(this);
        }
        fEnabling = true;
        interpolate(maker, maker.fEnableTime);
        fEnabling = false;
        if (scope != NULL && dontDraw == false)
            scope->enable(maker);
        return true;
    } else if (initialized && restore == false)
        append(this);
#if 0
    bool wasActive = inactivate(maker); // start fresh
    if (wasActive) {
        activate(maker);
        interpolate(maker, maker.fEnableTime);
        return true;
    }
#endif
//  start here;
    // now that one apply might embed another, only the parent apply should replace the scope 
    // or get appended to the display list
    // similarly, an apply added by an add immediate has already been located in the display list
    // and should not get moved or added again here
    if (fEmbedded) {
        return false;   // already added to display list by embedder
    }
    drawable = (SkDrawable*) scope;
    SkTDDrawableArray* parentList;
    SkTDDrawableArray* grandList;
    SkGroup* parentGroup;
    SkGroup* thisGroup;
    int old = displayList.findGroup(drawable, &parentList, &parentGroup, &thisGroup, &grandList);
    if (old < 0)
        goto append;
    else if (fContainsScope) {
        if ((*parentList)[old] != this || restore == true) {
append:
            if (parentGroup)
                parentGroup->markCopySize(old);
            if (parentList->count() < 10000) {
                fAppended = true;
                *parentList->append() = this;
            } else
                maker.setErrorCode(SkDisplayXMLParserError::kDisplayTreeTooDeep);
            old = -1;
        } else
//.........这里部分代码省略.........