WrapSizer

A wrap sizer lays out its items in a single line, like a box sizer – as long as there is space available in that direction.

Once all available space in the primary direction has been used, a new line is added and items are added there.

So a wrap sizer has a primary orientation for adding items, and adds lines as needed in the secondary direction.

See also

BoxSizer, Sizer, Sizers Overview

Inheritance Diagram

Inheritance diagram for class WrapSizer

Methods Summary

__init__	Constructor for a WrapSizer.
CalcMin	Implements the calculation of a box sizer’s minimal.
InformFirstDirection	Not used by an application.
IsSpaceItem	Can be overridden in the derived classes to treat some normal items as spacers.
RecalcSizes	Implements the calculation of a box sizer’s dimensions and then sets the size of its children (calling Window.SetSize if the child is a window).

Class API

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class WrapSizer(BoxSizer)

A wrap sizer lays out its items in a single line, like a box sizer – as long as there is space available in that direction.

Possible constructors:

WrapSizer(orient=HORIZONTAL, flags=WRAPSIZER_DEFAULT_FLAGS)

Methods

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__init__(self, orient=HORIZONTAL, flags=WRAPSIZER_DEFAULT_FLAGS)

Constructor for a WrapSizer.

orient determines the primary direction of the sizer (the most common case being HORIZONTAL ). The flags parameter can be a combination of the values EXTEND_LAST_ON_EACH_LINE which will cause the last item on each line to use any remaining space on that line and REMOVE_LEADING_SPACES which removes any spacer elements from the beginning of a row.

Both of these flags are on by default.

Parameters:

• orient (int) –
• flags (int) –

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CalcMin(self)

Implements the calculation of a box sizer’s minimal.

It is used internally only and must not be called by the user. Documented for information.

Return type: Size

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InformFirstDirection(self, direction, size, availableOtherDir)

Not used by an application.

This is the mechanism by which sizers can inform sub-items of the first determined size component. The sub-item can then better determine its size requirements.

Returns True if the information was used (and the sub-item min size was updated).

Parameters:

• direction (int) –
• size (int) –
• availableOtherDir (int) –

Return type:

bool

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IsSpaceItem(self, item)

Can be overridden in the derived classes to treat some normal items as spacers.

This method is used to determine whether the given item should be considered to be a spacer for the purposes of REMOVE_LEADING_SPACES implementation. By default only returns True for the real spacers.

Parameters:item (SizerItem) – Return type:bool

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RecalcSizes(self)

Implements the calculation of a box sizer’s dimensions and then sets the size of its children (calling Window.SetSize if the child is a window).

It is used internally only and must not be called by the user (call Layout if you want to resize). Documented for information.