Fixed#

class Fixed(**properties: Any)#

Superclasses: Widget, InitiallyUnowned, Object

Implemented Interfaces: Accessible, Buildable, ConstraintTarget

GtkFixed places its child widgets at fixed positions and with fixed sizes.

GtkFixed performs no automatic layout management.

For most applications, you should not use this container! It keeps you from having to learn about the other GTK containers, but it results in broken applications. With GtkFixed, the following things will result in truncated text, overlapping widgets, and other display bugs:

  • Themes, which may change widget sizes.

  • Fonts other than the one you used to write the app will of course change the size of widgets containing text; keep in mind that users may use a larger font because of difficulty reading the default, or they may be using a different OS that provides different fonts.

  • Translation of text into other languages changes its size. Also, display of non-English text will use a different font in many cases.

In addition, GtkFixed does not pay attention to text direction and thus may produce unwanted results if your app is run under right-to-left languages such as Hebrew or Arabic. That is: normally GTK will order containers appropriately for the text direction, e.g. to put labels to the right of the thing they label when using an RTL language, but it can’t do that with GtkFixed. So if you need to reorder widgets depending on the text direction, you would need to manually detect it and adjust child positions accordingly.

Finally, fixed positioning makes it kind of annoying to add/remove UI elements, since you have to reposition all the other elements. This is a long-term maintenance problem for your application.

If you know none of these things are an issue for your application, and prefer the simplicity of GtkFixed, by all means use the widget. But you should be aware of the tradeoffs.

Constructors#

class Fixed
classmethod new() → Widget#

Creates a new GtkFixed.

Methods#

class Fixed
get_child_position(widget: Widget) → tuple[float, float]#

Retrieves the translation transformation of the given child GtkWidget in the GtkFixed.

See also: get_child_transform.

Parameters:

widget – a child of fixed

get_child_transform(widget: Widget) → Transform | None#

Retrieves the transformation for widget set using set_child_transform().

Parameters:

widget – a GtkWidget, child of fixed

move(widget: Widget, x: float, y: float) → None#

Sets a translation transformation to the given x and y coordinates to the child widget of the GtkFixed.

Parameters:

  • widget – the child widget

  • x – the horizontal position to move the widget to

  • y – the vertical position to move the widget to

put(widget: Widget, x: float, y: float) → None#

Adds a widget to a GtkFixed at the given position.

Parameters:

  • widget – the widget to add

  • x – the horizontal position to place the widget at

  • y – the vertical position to place the widget at

remove(widget: Widget) → None#

Removes a child from fixed.

Parameters:

widget – the child widget to remove

set_child_transform(widget: Widget, transform: Transform | None = None) → None#

Sets the transformation for widget.

This is a convenience function that retrieves the FixedLayoutChild instance associated to widget and calls set_transform.

Parameters:

  • widget – a GtkWidget, child of fixed

  • transform – the transformation assigned to widget to reset widget's transform

Fields#

class Fixed
parent_instance#