Class FlutterMutatorsStack
- java.lang.Object
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- io.flutter.embedding.engine.mutatorsstack.FlutterMutatorsStack
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public class FlutterMutatorsStack extends Object
The mutator stack containing a list of mutatorsThe mutators can be applied to a
PlatformView
to perform a series mutations. SeeFlutterMutatorsStack.FlutterMutator
for informations on Mutators.
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Nested Class Summary
Nested Classes Modifier and Type Class Description class
FlutterMutatorsStack.FlutterMutator
A class represents a mutatorstatic class
FlutterMutatorsStack.FlutterMutatorType
The type of a Mutator SeeFlutterMutatorsStack.FlutterMutator
for informations on Mutators.
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Constructor Summary
Constructors Constructor Description FlutterMutatorsStack()
Initialize the mutator stack.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description List<Path>
getFinalClippingPaths()
Get a list of all the clipping operations.Matrix
getFinalMatrix()
Returns the final matrix.List<FlutterMutatorsStack.FlutterMutator>
getMutators()
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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Method Detail
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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.
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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
public List<FlutterMutatorsStack.FlutterMutator> getMutators()
Get a list of all the raw mutators. The 0 index of the returned list is the top of the stack.
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getFinalClippingPaths
public List<Path> 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
public Matrix 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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