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Bug 764125; changes to nsCanvasRenderingContext2DAzure. r=Bas

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This commit is contained in:
Nicholas Cameron 2012-07-24 22:18:38 +12:00
parent bf79e5be56
commit 69f9dc8cc2
2 changed files with 29 additions and 12 deletions
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36
content/canvas/src/nsCanvasRenderingContext2DAzure.cpp
View File

@ -2493,6 +2493,7 @@ nsCanvasRenderingContext2DAzure::EnsureWritablePath()
}
if (!mPath) {
NS_ASSERTION(!mPathTransformWillUpdate, "mPathTransformWillUpdate should be false, if all paths are null");
mPathBuilder = mTarget->CreatePathBuilder(fillRule);
} else if (!mPathTransformWillUpdate) {
mPathBuilder = mPath->CopyToBuilder(fillRule);
@ -2504,7 +2505,7 @@ nsCanvasRenderingContext2DAzure::EnsureWritablePath()
}
void
nsCanvasRenderingContext2DAzure::EnsureUserSpacePath()
nsCanvasRenderingContext2DAzure::EnsureUserSpacePath(bool aCommitTransform /* = true */)
{
FillRule fillRule = CurrentState().fillRule;
@ -2517,7 +2518,9 @@ nsCanvasRenderingContext2DAzure::EnsureUserSpacePath()
mPathBuilder = nsnull;
}
if (mPath && mPathTransformWillUpdate) {
if (aCommitTransform &&
mPath &&
mPathTransformWillUpdate) {
mDSPathBuilder =
mPath->TransformedCopyToBuilder(mPathToDS, fillRule);
mPath = nsnull;
@ -2531,6 +2534,7 @@ nsCanvasRenderingContext2DAzure::EnsureUserSpacePath()
Matrix inverse = mTarget->GetTransform();
if (!inverse.Invert()) {
NS_WARNING("Could not invert transform");
return;
}
@ -2544,6 +2548,8 @@ nsCanvasRenderingContext2DAzure::EnsureUserSpacePath()
mPathBuilder = mPath->CopyToBuilder(fillRule);
mPath = mPathBuilder->Finish();
}
NS_ASSERTION(mPath, "mPath should exist");
}
void
@ -3607,9 +3613,14 @@ nsCanvasRenderingContext2DAzure::IsPointInPath(double x, double y)
return false;
}
EnsureUserSpacePath();
return mPath && mPath->ContainsPoint(Point(x, y), mTarget->GetTransform());
EnsureUserSpacePath(false);
if (!mPath) {
return false;
}
if (mPathTransformWillUpdate) {
return mPath->ContainsPoint(Point(x, y), mPathToDS);
}
return mPath->ContainsPoint(Point(x, y), mTarget->GetTransform());
}
NS_IMETHODIMP
@ -4255,11 +4266,12 @@ nsCanvasRenderingContext2DAzure::GetImageDataArray(JSContext* aCx,
RefPtr<DataSourceSurface> readback;
if (!srcReadRect.IsEmpty()) {
RefPtr<SourceSurface> snapshot = mTarget->Snapshot();
if (snapshot) {
readback = snapshot->GetDataSurface();
readback = snapshot->GetDataSurface();
srcStride = readback->Stride();
src = readback->GetData() + srcReadRect.y * srcStride + srcReadRect.x * 4;
srcStride = readback->Stride();
src = readback->GetData() + srcReadRect.y * srcStride + srcReadRect.x * 4;
}
}
// make sure sUnpremultiplyTable has been created
@ -4267,6 +4279,8 @@ nsCanvasRenderingContext2DAzure::GetImageDataArray(JSContext* aCx,
// NOTE! dst is the same as src, and this relies on reading
// from src and advancing that ptr before writing to dst.
// NOTE! I'm not sure that it is, I think this comment might have been
// inherited from Thebes canvas and is no longer true
uint8_t* dst = data + dstWriteRect.y * (aWidth * 4) + dstWriteRect.x * 4;
for (int32_t j = 0; j < dstWriteRect.height; ++j) {
@ -4598,8 +4612,8 @@ static PRUint8 g2DContextLayerUserData;
already_AddRefed<CanvasLayer>
nsCanvasRenderingContext2DAzure::GetCanvasLayer(nsDisplayListBuilder* aBuilder,
CanvasLayer *aOldLayer,
LayerManager *aManager)
CanvasLayer *aOldLayer,
LayerManager *aManager)
{
if (!mValid) {
return nsnull;

5
content/canvas/src/nsCanvasRenderingContext2DAzure.h
View File

@ -597,11 +597,14 @@ protected:
/* This function ensures there is a writable pathbuilder available, this
* pathbuilder may be working in user space or in device space or
* device space.
* After calling this function mPathTransformWillUpdate will be false
*/
void EnsureWritablePath();
// Ensures a path in UserSpace is available.
void EnsureUserSpacePath();
// If aCommitTransform is true, then any transform on the context will be
// used for the path.
void EnsureUserSpacePath(bool aCommitTransform = true);
void TransformWillUpdate();