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Bug 653571 - Add IsIdentity() function to SVG{Length,Point}ListAndInfo. r=dholbert

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This commit is contained in:
Birunthan Mohanathas 2013-11-26 14:29:10 -05:00
parent 77a5ac1aba
commit 849dcb2436
5 changed files with 35 additions and 12 deletions
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13
content/svg/content/src/SVGLengthList.h
View File

@ -196,6 +196,19 @@ public:
return static_cast<nsSVGElement*>(e.get());
}
/**
* Returns true if this object is an "identity" value, from the perspective
* of SMIL. In other words, returns true until the initial value set up in
* SVGLengthListSMILType::Init() has been changed with a SetInfo() call.
*/
bool IsIdentity() const {
if (!mElement) {
NS_ABORT_IF_FALSE(IsEmpty(), "target element propagation failure");
return true;
}
return false;
}
uint8_t Axis() const {
NS_ABORT_IF_FALSE(mElement, "Axis() isn't valid");
return mAxis;

8
content/svg/content/src/SVGLengthListSMILType.cpp
View File

@ -93,15 +93,11 @@ SVGLengthListSMILType::Add(nsSMILValue& aDest,
// should be, not zeros, and those values are not explicit or otherwise
// available.
if (!valueToAdd.Element()) { // Adding identity value - no-op
NS_ABORT_IF_FALSE(valueToAdd.IsEmpty(),
"Identity values should be empty");
if (valueToAdd.IsIdentity()) { // Adding identity value - no-op
return NS_OK;
}
if (!dest.Element()) { // Adding *to* an identity value
NS_ABORT_IF_FALSE(dest.IsEmpty(),
"Identity values should be empty");
if (dest.IsIdentity()) { // Adding *to* an identity value
if (!dest.SetLength(valueToAdd.Length())) {
return NS_ERROR_OUT_OF_MEMORY;
}

5
content/svg/content/src/SVGPathData.h
View File

@ -253,6 +253,11 @@ public:
return SVGPathData::CopyFrom(rhs);
}
/**
* Returns true if this object is an "identity" value, from the perspective
* of SMIL. In other words, returns true until the initial value set up in
* SVGPathSegListSMILType::Init() has been changed with a SetInfo() call.
*/
bool IsIdentity() const {
if (!mElement) {
NS_ABORT_IF_FALSE(IsEmpty(), "target element propagation failure");

13
content/svg/content/src/SVGPointList.h
View File

@ -174,6 +174,19 @@ public:
return static_cast<nsSVGElement*>(e.get());
}
/**
* Returns true if this object is an "identity" value, from the perspective
* of SMIL. In other words, returns true until the initial value set up in
* SVGPointListSMILType::Init() has been changed with a SetInfo() call.
*/
bool IsIdentity() const {
if (!mElement) {
NS_ABORT_IF_FALSE(IsEmpty(), "target element propagation failure");
return true;
}
return false;
}
nsresult CopyFrom(const SVGPointListAndInfo& rhs) {
mElement = rhs.mElement;
return SVGPointList::CopyFrom(rhs);

8
content/svg/content/src/SVGPointListSMILType.cpp
View File

@ -78,14 +78,10 @@ SVGPointListSMILType::Add(nsSMILValue& aDest,
NS_ABORT_IF_FALSE(dest.Element() || valueToAdd.Element(),
"Target element propagation failure");
if (!valueToAdd.Element()) {
NS_ABORT_IF_FALSE(valueToAdd.Length() == 0,
"Not identity value - target element propagation failure");
if (valueToAdd.IsIdentity()) {
return NS_OK;
}
if (!dest.Element()) {
NS_ABORT_IF_FALSE(dest.Length() == 0,
"Not identity value - target element propagation failure");
if (dest.IsIdentity()) {
if (!dest.SetLength(valueToAdd.Length())) {
return NS_ERROR_OUT_OF_MEMORY;
}