зеркало из https://github.com/mozilla/pjs.git
Bug 305021 - crash in [@ nsSVGGradientFrame::checkURITarget] if gradient references itself.
r=tor
This commit is contained in:
scootermorris%comcast.net
Родитель
d2674e48d4
Коммит
98000df793
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@ -148,6 +148,7 @@ protected:
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//
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nsSVGGradientFrame *mNextGrad;
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PRBool mLoopFlag;
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private:
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// Cached values
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@ -275,6 +276,7 @@ nsSVGGradientFrame::~nsSVGGradientFrame()
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// Remove observers on gradient attributes
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if (mGradientUnits) NS_REMOVE_SVGVALUE_OBSERVER(mGradientUnits);
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if (mSpreadMethod) NS_REMOVE_SVGVALUE_OBSERVER(mSpreadMethod);
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if (mNextGrad) mNextGrad->RemoveObserver(this);
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}
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//----------------------------------------------------------------------
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@ -302,6 +304,16 @@ NS_IMETHODIMP
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nsSVGGradientFrame::DidModifySVGObservable(nsISVGValue* observable,
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nsISVGValue::modificationType aModType)
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{
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nsCOMPtr<nsISVGGradient> gradient = do_QueryInterface(observable);
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// Is this a gradient we are observing that is going away?
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if (mNextGrad && aModType == nsISVGValue::mod_die && gradient) {
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// Yes, we need to handle this differently
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nsISVGGradient *grad;
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CallQueryInterface(mNextGrad, &grad);
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if (grad == gradient) {
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mNextGrad = nsnull;
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}
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}
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// Something we depend on was modified -- pass it on!
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DidModify(aModType);
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return NS_OK;
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@ -338,7 +350,10 @@ nsSVGGradientFrame::GetStopCount(PRUint32 *aStopCount)
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// No stops? check for URI target
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if (checkURITarget())
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rv = mNextGrad->GetStopCount(aStopCount);
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else
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rv = NS_ERROR_FAILURE;
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}
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mLoopFlag = PR_FALSE;
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return rv;
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}
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@ -346,24 +361,27 @@ NS_IMETHODIMP
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nsSVGGradientFrame::GetStopOffset(PRInt32 aIndex, float *aOffset)
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{
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nsIDOMSVGStopElement *stopElement = nsnull;
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nsresult rv = NS_OK;
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PRInt32 stopCount = GetStopElement(aIndex, &stopElement, nsnull);
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if (stopCount == 0 && !stopElement) {
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// No stops? check for URI target
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if (checkURITarget())
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return mNextGrad->GetStopOffset(aIndex, aOffset);
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}
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if (!stopElement) {
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*aOffset = nsnull;
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if (stopCount && !stopElement) {
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*aOffset = 0.0f;
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return NS_ERROR_FAILURE;
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}
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nsCOMPtr<nsIDOMSVGAnimatedNumber> aNum;
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stopElement->GetOffset(getter_AddRefs(aNum));
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aNum->GetAnimVal(aOffset);
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if (*aOffset < 0.0f)
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*aOffset = 0.0f;
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if (*aOffset > 1.0f)
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*aOffset = 1.0f;
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return NS_OK;
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if (stopCount == 0 && !stopElement && checkURITarget()) {
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rv = mNextGrad->GetStopOffset(aIndex, aOffset);
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} else {
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nsCOMPtr<nsIDOMSVGAnimatedNumber> aNum;
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stopElement->GetOffset(getter_AddRefs(aNum));
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aNum->GetAnimVal(aOffset);
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if (*aOffset < 0.0f)
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*aOffset = 0.0f;
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if (*aOffset > 1.0f)
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*aOffset = 1.0f;
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}
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mLoopFlag = PR_FALSE;
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return rv;
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}
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NS_IMETHODIMP
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@ -371,19 +389,19 @@ nsSVGGradientFrame::GetStopColorType(PRInt32 aIndex, PRUint16 *aStopColorType)
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{
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nsIDOMSVGStopElement *stopElement = nsnull;
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nsIFrame *stopFrame = nsnull;
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nsresult rv = NS_OK;
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PRInt32 stopCount = GetStopElement(aIndex, &stopElement, &stopFrame);
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if (stopCount == 0 && !stopElement) {
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// No stops? check for URI target
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if (checkURITarget())
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return mNextGrad->GetStopColorType(aIndex, aStopColorType);
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}
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if (!stopElement) {
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if (stopCount && !stopElement) {
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*aStopColorType = 0;
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return NS_ERROR_FAILURE;
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}
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*aStopColorType = stopFrame->GetStyleSVGReset()->mStopColor.mType;
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return NS_OK;
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if (stopCount == 0 && !stopElement && checkURITarget()) {
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rv = mNextGrad->GetStopColorType(aIndex, aStopColorType);
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} else {
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*aStopColorType = stopFrame->GetStyleSVGReset()->mStopColor.mType;
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}
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mLoopFlag = PR_FALSE;
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return rv;
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}
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NS_IMETHODIMP
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@ -391,19 +409,25 @@ nsSVGGradientFrame::GetStopColor(PRInt32 aIndex, nscolor *aStopColor)
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{
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nsIDOMSVGStopElement *stopElement = nsnull;
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nsIFrame *stopFrame = nsnull;
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nsresult rv = NS_OK;
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PRInt32 stopCount = GetStopElement(aIndex, &stopElement, &stopFrame);
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if (stopCount == 0 && !stopElement) {
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// No stops? check for URI target
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if (checkURITarget())
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return mNextGrad->GetStopColor(aIndex, aStopColor);
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}
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NS_ASSERTION(stopFrame, "No stop frame found!");
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if (!stopFrame) {
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if (stopCount && !stopElement) {
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*aStopColor = 0;
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return NS_ERROR_FAILURE;
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}
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*aStopColor = stopFrame->GetStyleSVGReset()->mStopColor.mPaint.mColor;
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return NS_OK;
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if (stopCount == 0 && !stopElement && checkURITarget()) {
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rv = mNextGrad->GetStopColor(aIndex, aStopColor);
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} else {
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NS_ASSERTION(stopFrame, "No stop frame found!");
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if (!stopFrame) {
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*aStopColor = 0;
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rv = NS_ERROR_FAILURE;
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} else {
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*aStopColor = stopFrame->GetStyleSVGReset()->mStopColor.mPaint.mColor;
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}
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}
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mLoopFlag = PR_FALSE;
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return rv;
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}
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NS_IMETHODIMP
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@ -411,19 +435,25 @@ nsSVGGradientFrame::GetStopOpacity(PRInt32 aIndex, float *aStopOpacity)
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{
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nsIDOMSVGStopElement *stopElement = nsnull;
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nsIFrame *stopFrame = nsnull;
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nsresult rv = NS_OK;
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PRInt32 stopCount = GetStopElement(aIndex, &stopElement, &stopFrame);
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if (stopCount == 0 && !stopElement) {
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// No stops? check for URI target
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if (checkURITarget())
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return mNextGrad->GetStopOpacity(aIndex, aStopOpacity);
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}
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if (!stopFrame) {
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*aStopOpacity = 1.0f;
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if (stopCount && !stopElement) {
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*aStopOpacity = 0;
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return NS_ERROR_FAILURE;
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}
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*aStopOpacity = stopFrame->GetStyleSVGReset()->mStopOpacity;
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return NS_OK;
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if (stopCount == 0 && !stopElement && checkURITarget()) {
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rv = mNextGrad->GetStopOpacity(aIndex, aStopOpacity);
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} else {
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NS_ASSERTION(stopFrame, "No stop frame found!");
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if (!stopFrame) {
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*aStopOpacity = 1.0f;
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rv = NS_ERROR_FAILURE;
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} else {
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*aStopOpacity = stopFrame->GetStyleSVGReset()->mStopOpacity;
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}
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}
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mLoopFlag = PR_FALSE;
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return rv;
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}
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NS_IMETHODIMP
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@ -509,6 +539,7 @@ nsSVGGradientFrame::GetGradientTransform(nsIDOMSVGMatrix **aGradientTransform,
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} else {
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// Yes, get it from the target
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mNextGrad->GetGradientTransform(getter_AddRefs(gradientTransform), nsnull);
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mLoopFlag = PR_FALSE;
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}
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bboxTransform->Multiply(gradientTransform, aGradientTransform);
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@ -548,6 +579,7 @@ nsSVGGradientFrame::PrivateGetGradientUnits(nsIDOMSVGAnimatedEnumeration * *aEnu
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} else {
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// Yes, get it from the target
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mNextGrad->PrivateGetGradientUnits(aEnum);
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mLoopFlag = PR_FALSE;
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}
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return NS_OK;
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}
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@ -567,26 +599,20 @@ nsSVGGradientFrame::PrivateGetSpreadMethod(nsIDOMSVGAnimatedEnumeration * *aEnum
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} else {
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// Yes, get it from the target
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mNextGrad->PrivateGetSpreadMethod(aEnum);
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mLoopFlag = PR_FALSE;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsSVGGradientFrame::GetNextGradient(nsISVGGradient * *aNextGrad, PRUint32 aType) {
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if (checkURITarget()) {
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// OK, we have a reference. We need to find the next reference that points to
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// our type
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PRUint32 nextType;
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mNextGrad->GetGradientType(&nextType);
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if (nextType == aType) {
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*aNextGrad = mNextGrad;
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return NS_OK;
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} else {
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return mNextGrad->GetNextGradient(aNextGrad, aType);
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}
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PRUint32 nextType;
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mNextGrad->GetGradientType(&nextType);
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if (nextType == aType) {
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*aNextGrad = mNextGrad;
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return NS_OK;
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} else {
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*aNextGrad = nsnull;
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return NS_ERROR_FAILURE;
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return mNextGrad->GetNextGradient(aNextGrad, aType);
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}
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}
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@ -604,6 +630,7 @@ nsSVGGradientFrame::checkURITarget(nsIAtom *attr) {
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PRBool
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nsSVGGradientFrame::checkURITarget(void) {
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nsIFrame *aNextGrad;
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mLoopFlag = PR_TRUE; // Set our loop detection flag
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// Have we already figured out the next Gradient?
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if (mNextGrad != nsnull) {
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return PR_TRUE;
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@ -624,7 +651,15 @@ nsSVGGradientFrame::checkURITarget(void) {
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if ((frameType != nsLayoutAtoms::svgLinearGradientFrame) &&
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(frameType != nsLayoutAtoms::svgRadialGradientFrame))
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return PR_FALSE;
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mNextGrad = (nsSVGGradientFrame *)aNextGrad;
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if (mNextGrad->mLoopFlag) {
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// Yes, remove the reference and return an error
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NS_WARNING("Gradient loop detected!");
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CopyUTF8toUTF16("", mNextGradStr);
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mNextGrad = nsnull;
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return PR_FALSE;
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}
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// Add ourselves to the observer list
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if (mNextGrad) {
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// Can't use the NS_ADD macro here because of nsISupports ambiguity
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@ -703,6 +738,7 @@ nsSVGLinearGradientFrame::PrivateGetX1(nsIDOMSVGLength * *aX1)
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if (nsSVGGradientFrame::GetNextGradient(&aNextGrad, nsISVGGradient::SVG_LINEAR_GRADIENT) == NS_OK) {
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nsSVGLinearGradientFrame *aLNgrad = (nsSVGLinearGradientFrame *)aNextGrad;
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aLNgrad->PrivateGetX1(aX1);
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mLoopFlag = PR_FALSE;
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return NS_OK;
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}
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// There are no gradients in the list with our type -- fall through
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@ -712,6 +748,7 @@ nsSVGLinearGradientFrame::PrivateGetX1(nsIDOMSVGLength * *aX1)
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nsCOMPtr<nsIDOMSVGAnimatedLength> aLen;
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aLgrad->GetX1(getter_AddRefs(aLen));
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aLen->GetAnimVal(aX1);
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mLoopFlag = PR_FALSE;
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return NS_OK;
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}
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@ -730,6 +767,7 @@ nsSVGLinearGradientFrame::PrivateGetY1(nsIDOMSVGLength * *aY1)
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if (nsSVGGradientFrame::GetNextGradient(&aNextGrad, nsISVGGradient::SVG_LINEAR_GRADIENT) == NS_OK) {
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nsSVGLinearGradientFrame *aLNgrad = (nsSVGLinearGradientFrame *)aNextGrad;
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aLNgrad->PrivateGetY1(aY1);
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mLoopFlag = PR_FALSE;
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return NS_OK;
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}
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// There are no gradients in the list with our type -- fall through
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@ -739,6 +777,7 @@ nsSVGLinearGradientFrame::PrivateGetY1(nsIDOMSVGLength * *aY1)
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nsCOMPtr<nsIDOMSVGAnimatedLength> aLen;
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aLgrad->GetY1(getter_AddRefs(aLen));
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aLen->GetAnimVal(aY1);
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mLoopFlag = PR_FALSE;
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return NS_OK;
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}
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@ -757,6 +796,7 @@ nsSVGLinearGradientFrame::PrivateGetX2(nsIDOMSVGLength * *aX2)
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if (nsSVGGradientFrame::GetNextGradient(&aNextGrad, nsISVGGradient::SVG_LINEAR_GRADIENT) == NS_OK) {
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nsSVGLinearGradientFrame *aLNgrad = (nsSVGLinearGradientFrame *)aNextGrad;
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aLNgrad->PrivateGetX2(aX2);
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mLoopFlag = PR_FALSE;
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return NS_OK;
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}
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// There are no gradients in the list with our type -- fall through
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@ -766,6 +806,7 @@ nsSVGLinearGradientFrame::PrivateGetX2(nsIDOMSVGLength * *aX2)
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nsCOMPtr<nsIDOMSVGAnimatedLength> aLen;
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aLgrad->GetX2(getter_AddRefs(aLen));
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aLen->GetAnimVal(aX2);
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mLoopFlag = PR_FALSE;
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return NS_OK;
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}
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@ -784,6 +825,7 @@ nsSVGLinearGradientFrame::PrivateGetY2(nsIDOMSVGLength * *aY2)
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if (nsSVGGradientFrame::GetNextGradient(&aNextGrad, nsISVGGradient::SVG_LINEAR_GRADIENT) == NS_OK) {
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nsSVGLinearGradientFrame *aLNgrad = (nsSVGLinearGradientFrame *)aNextGrad;
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aLNgrad->PrivateGetY2(aY2);
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mLoopFlag = PR_FALSE;
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return NS_OK;
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}
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// There are no gradients in the list with our type -- fall through
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@ -793,6 +835,7 @@ nsSVGLinearGradientFrame::PrivateGetY2(nsIDOMSVGLength * *aY2)
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nsCOMPtr<nsIDOMSVGAnimatedLength> aLen;
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aLgrad->GetY2(getter_AddRefs(aLen));
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aLen->GetAnimVal(aY2);
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mLoopFlag = PR_FALSE;
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return NS_OK;
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}
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@ -892,6 +935,7 @@ nsSVGRadialGradientFrame::PrivateGetCx(nsIDOMSVGLength * *aCx)
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if (nsSVGGradientFrame::GetNextGradient(&aNextGrad, nsISVGGradient::SVG_RADIAL_GRADIENT) == NS_OK) {
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nsSVGRadialGradientFrame *aRNgrad = (nsSVGRadialGradientFrame *)aNextGrad;
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aRNgrad->PrivateGetCx(aCx);
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mLoopFlag = PR_FALSE;
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return NS_OK;
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}
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// There are no gradients in the list with our type -- fall through
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@ -901,6 +945,7 @@ nsSVGRadialGradientFrame::PrivateGetCx(nsIDOMSVGLength * *aCx)
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nsCOMPtr<nsIDOMSVGAnimatedLength> aLen;
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aRgrad->GetCx(getter_AddRefs(aLen));
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aLen->GetAnimVal(aCx);
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mLoopFlag = PR_FALSE;
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return NS_OK;
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}
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@ -919,6 +964,7 @@ nsSVGRadialGradientFrame::PrivateGetCy(nsIDOMSVGLength * *aCy)
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if (nsSVGGradientFrame::GetNextGradient(&aNextGrad, nsISVGGradient::SVG_RADIAL_GRADIENT) == NS_OK) {
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nsSVGRadialGradientFrame *aRNgrad = (nsSVGRadialGradientFrame *)aNextGrad;
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aRNgrad->PrivateGetCy(aCy);
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mLoopFlag = PR_FALSE;
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return NS_OK;
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}
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// There are no gradients in the list with our type -- fall through
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@ -928,6 +974,7 @@ nsSVGRadialGradientFrame::PrivateGetCy(nsIDOMSVGLength * *aCy)
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nsCOMPtr<nsIDOMSVGAnimatedLength> aLen;
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aRgrad->GetCy(getter_AddRefs(aLen));
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aLen->GetAnimVal(aCy);
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mLoopFlag = PR_FALSE;
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return NS_OK;
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}
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@ -946,6 +993,7 @@ nsSVGRadialGradientFrame::PrivateGetR(nsIDOMSVGLength * *aR)
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if (nsSVGGradientFrame::GetNextGradient(&aNextGrad, nsISVGGradient::SVG_RADIAL_GRADIENT) == NS_OK) {
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nsSVGRadialGradientFrame *aRNgrad = (nsSVGRadialGradientFrame *)aNextGrad;
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aRNgrad->PrivateGetR(aR);
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mLoopFlag = PR_FALSE;
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return NS_OK;
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}
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// There are no gradients in the list with our type -- fall through
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@ -955,6 +1003,7 @@ nsSVGRadialGradientFrame::PrivateGetR(nsIDOMSVGLength * *aR)
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nsCOMPtr<nsIDOMSVGAnimatedLength> aLen;
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aRgrad->GetR(getter_AddRefs(aLen));
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aLen->GetAnimVal(aR);
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mLoopFlag = PR_FALSE;
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return NS_OK;
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}
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@ -973,6 +1022,7 @@ nsSVGRadialGradientFrame::PrivateGetFx(nsIDOMSVGLength * *aFx)
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if (nsSVGGradientFrame::GetNextGradient(&aNextGrad, nsISVGGradient::SVG_RADIAL_GRADIENT) == NS_OK) {
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nsSVGRadialGradientFrame *aRNgrad = (nsSVGRadialGradientFrame *)aNextGrad;
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aRNgrad->PrivateGetFx(aFx);
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mLoopFlag = PR_FALSE;
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return NS_OK;
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}
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// There are no gradients in the list with our type -- fall through
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@ -987,6 +1037,7 @@ nsSVGRadialGradientFrame::PrivateGetFx(nsIDOMSVGLength * *aFx)
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nsCOMPtr<nsIDOMSVGAnimatedLength> aLen;
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aRgrad->GetFx(getter_AddRefs(aLen));
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aLen->GetAnimVal(aFx);
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mLoopFlag = PR_FALSE;
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return NS_OK;
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}
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@ -1005,6 +1056,7 @@ nsSVGRadialGradientFrame::PrivateGetFy(nsIDOMSVGLength * *aFy)
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if (nsSVGGradientFrame::GetNextGradient(&aNextGrad, nsISVGGradient::SVG_RADIAL_GRADIENT) == NS_OK) {
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nsSVGRadialGradientFrame *aRNgrad = (nsSVGRadialGradientFrame *)aNextGrad;
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aRNgrad->PrivateGetFy(aFy);
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mLoopFlag = PR_FALSE;
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return NS_OK;
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}
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// There are no gradients in the list with our type -- fall through
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@ -1013,6 +1065,7 @@ nsSVGRadialGradientFrame::PrivateGetFy(nsIDOMSVGLength * *aFy)
|
|||
// See if the value was explicitly set -- the spec
|
||||
// states that if there is no explicit fy value, we return the cy value
|
||||
// see http://www.w3.org/TR/SVG11/pservers.html#RadialGradients
|
||||
mLoopFlag = PR_FALSE;
|
||||
if (!mContent->HasAttr(kNameSpaceID_None, nsSVGAtoms::fy))
|
||||
return PrivateGetCy(aFy);
|
||||
// No, return the values
|
||||
|
|
@ -1122,6 +1175,7 @@ nsresult NS_NewSVGLinearGradientFrame(nsIPresShell* aPresShell,
|
|||
it->mNextGrad = nsnull;
|
||||
}
|
||||
|
||||
it->mLoopFlag = PR_FALSE;
|
||||
*aNewFrame = it;
|
||||
|
||||
return NS_OK;
|
||||
|
|
@ -1157,6 +1211,7 @@ nsresult NS_NewSVGRadialGradientFrame(nsIPresShell* aPresShell,
|
|||
it->mNextGrad = nsnull;
|
||||
}
|
||||
|
||||
it->mLoopFlag = PR_FALSE;
|
||||
*aNewFrame = it;
|
||||
|
||||
return NS_OK;
|
||||
|
|
@ -1180,6 +1235,5 @@ nsresult NS_GetSVGGradient(nsISVGGradient **aGrad, nsIURI *aURI, nsIContent *aCo
|
|||
uriSpec, aContent, aPresShell))) {
|
||||
return NS_ERROR_FAILURE;
|
||||
}
|
||||
|
||||
return result->QueryInterface(NS_GET_IID(nsISVGGradient), (void **)aGrad);
|
||||
}
|
||||
|
|
|
|||
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