Class FlutterMutatorsStack
java.lang.Object
io.flutter.embedding.engine.mutatorsstack.FlutterMutatorsStack
The mutator stack containing a list of mutators
The mutators can be applied to a PlatformView
to perform a
series mutations. See FlutterMutatorsStack.FlutterMutator
for informations on Mutators.
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Nested Class Summary
Modifier and TypeClassDescriptionclass
A class represents a mutatorstatic enum
The type of a Mutator SeeFlutterMutatorsStack.FlutterMutator
for informations on Mutators. -
Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionGet a list of all the clipping operations.Returns the final matrix.Get a list of all the raw mutators.void
pushClipRect
(int left, int top, int right, int bottom) Push a clipRectFlutterMutatorsStack.FlutterMutator
to the stack.void
pushClipRRect
(int left, int top, int right, int bottom, float[] radiis) Push a clipRRectFlutterMutatorsStack.FlutterMutator
to the stack.void
pushTransform
(float[] values) Push a transformFlutterMutatorsStack.FlutterMutator
to the stack.
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Constructor Details
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FlutterMutatorsStack
public FlutterMutatorsStack()Initialize the mutator stack.
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Method Details
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pushTransform
public void pushTransform(float[] values) Push a transformFlutterMutatorsStack.FlutterMutator
to the stack.- Parameters:
values
- the transform matrix to be pushed to the stack. The array matches how aMatrix
is constructed.
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pushClipRect
public void pushClipRect(int left, int top, int right, int bottom) Push a clipRectFlutterMutatorsStack.FlutterMutator
to the stack. -
pushClipRRect
public void pushClipRRect(int left, int top, int right, int bottom, float[] radiis) Push a clipRRectFlutterMutatorsStack.FlutterMutator
to the stack.- Parameters:
left
- left offset of the rrect.top
- top offset of the rrect.right
- right position of the rrect.bottom
- bottom position of the rrect.radiis
- the radiis of the rrect. It must be size of 8, including an x and y for each corner.
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getMutators
Get a list of all the raw mutators. The 0 index of the returned list is the top of the stack. -
getFinalClippingPaths
Get a list of all the clipping operations. All the clipping operations -- whether it is clip rect, clip rrect, or clip path -- are converted into Paths. The paths are also transformed with the matrix that up to their stack positions. For example: If the stack looks like (from top to bottom): TransA -> ClipA -> TransB -> ClipB, the final paths will look like [TransA*ClipA, TransA*TransB*ClipB].Clipping this list to the parent canvas of a view results the final clipping path.
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getFinalMatrix
Returns the final matrix. Apply this matrix to the canvas of a view results the final transformation of the view.
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