wx.lib.ogl.composit.CompositeShape

The CompositeShape is a shape with a list of child objects, and a list of size and positioning constraints between the children.

Class Hierarchy

Inheritance diagram for class CompositeShape:

Known Subclasses

wx.lib.ogl.composit.DivisionShape

Known Superclasses

wx.lib.ogl.basic.RectangleShape

Methods Summary

__init__	Default class constructor.
AddChild	Add a shape to the composite. If addAfter is not None, the shape
AddConstraint	Adds a constraint to the composite.
AddSimpleConstraint	Add a constraint of the given type to the composite.
CalculateSize	Calculates the size and position of the composite based on
Constrain	Constrain the children.
ContainsDivision	Check if division is descendant.
Delete	Fully disconnect this shape from parents, children, the
DeleteConstraint	Deletes constraint from composite.
DeleteConstraintsInvolvingChild	This function deletes constraints which mention the given child.
FindConstraint	Finds the constraint with the given id.
FindContainerImage	Finds the image used to visualize a container. This is any child of
GetConstraints	Return the list of constraints.
GetDivisions	Return the list of divisions.
MakeContainer	Makes this composite into a container by creating one child
OnBeginDragLeft	The begin drag left handler.
OnCreateDivision	Create division handler.
OnDragLeft	The drag left handler.
OnDraw	The draw handler.
OnDrawContents	The draw contents handler.
OnEndDragLeft	The end drag left handler.
OnErase	The erase handler.
OnMovePre	The move ‘pre’ handler.
OnRightClick	The right click handler.
Recompute	Recomputes any constraints associated with the object. If False is
RemoveChild	Removes the child from the composite and any constraint
RemoveChildFromConstraints	Removes the child from the constraints.
SetSize	Set the size.

Class API

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class CompositeShape(RectangleShape)

The CompositeShape is a shape with a list of child objects, and a list of size and positioning constraints between the children.

Methods

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__init__(self)

Default class constructor.

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AddChild(self, child, addAfter = None)

Add a shape to the composite. If addAfter is not None, the shape will be added after addAfter.

Parameters:

• child – an instance of Shape
• addAfter – an instance of Shape

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AddConstraint(self, constraint)

Adds a constraint to the composite.

Parameters:constraint – an instance of Shape

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AddSimpleConstraint(self, type, constraining, constrained)

Add a constraint of the given type to the composite.

Parameters:

• type – see ConstraintType for valid types
• constraining – the constraining Shape
• constrained – the constrained Shape

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CalculateSize(self)

Calculates the size and position of the composite based on child sizes and positions.

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Constrain(self)

Constrain the children.

Returns:True if constained otherwise False

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ContainsDivision(self, division)

Check if division is descendant.

Parameters:division – divison to check Returns:True if division is a descendant of this container.

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Delete(self)

Fully disconnect this shape from parents, children, the canvas, etc.

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DeleteConstraint(self, constraint)

Deletes constraint from composite.

Parameters:constraint – the constraint to delete

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DeleteConstraintsInvolvingChild(self, child)

This function deletes constraints which mention the given child.

Used when deleting a child from the composite.

Parameters:child – an instance of Shape

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FindConstraint(self, cId)

Finds the constraint with the given id.

Parameters:cId – The constraint id to find. Returns:None or a tuple of the constraint and the actual composite the constraint was in, in case that composite was a descendant of this composit.

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FindContainerImage(self)

Finds the image used to visualize a container. This is any child of the composite that is not in the divisions list.

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GetConstraints(self)

Return the list of constraints.

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GetDivisions(self)

Return the list of divisions.

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MakeContainer(self)

Makes this composite into a container by creating one child DivisionShape.

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OnBeginDragLeft(self, x, y, keys = 0, attachment = 0)

The begin drag left handler.

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OnCreateDivision(self)

Create division handler.

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OnDragLeft(self, draw, x, y, keys = 0, attachment = 0)

The drag left handler.

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OnDraw(self, dc)

The draw handler.

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OnDrawContents(self, dc)

The draw contents handler.

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OnEndDragLeft(self, x, y, keys = 0, attachment = 0)

The end drag left handler.

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OnErase(self, dc)

The erase handler.

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OnMovePre(self, dc, x, y, old_x, old_y, display = True)

The move ‘pre’ handler.

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OnRightClick(self, x, y, keys = 0, attachment = 0)

The right click handler.

Note

If we get a ctrl-right click, this means send the message to the division, so we can invoke a user interface for dealing with regions.

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Recompute(self)

Recomputes any constraints associated with the object. If False is returned, the constraints could not be satisfied (there was an inconsistency).

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RemoveChild(self, child)

Removes the child from the composite and any constraint relationships, but does not delete the child.

Parameters:child – an instance of Shape

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RemoveChildFromConstraints(self, child)

Removes the child from the constraints.

Parameters:child – an instance of Shape

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SetSize(self, w, h, recursive = True)

Set the size.

Parameters:

• w – the width
• h – the heigth
• recursive – size the children recursively