Paned#

class Paned(**properties: Any)#

Superclasses: Widget, InitiallyUnowned, Object

Implemented Interfaces: Accessible, AccessibleRange, Buildable, ConstraintTarget, Orientable

Arranges its children in two panes, horizontally or vertically.

The division between the two panes is adjustable by the user by dragging a handle.

Child widgets are added to the panes of the widget with set_start_child and set_end_child. The division between the two children is set by default from the size requests of the children, but it can be adjusted by the user.

A paned widget draws a separator between the two child widgets and a small handle that the user can drag to adjust the division. It does not draw any relief around the children or around the separator. (The space in which the separator is called the gutter.) Often, it is useful to put each child inside a Frame so that the gutter appears as a ridge. No separator is drawn if one of the children is missing.

Each child has two options that can be set, “resize” and “shrink”. If “resize” is true then, when the GtkPaned is resized, that child will expand or shrink along with the paned widget. If “shrink” is true, then that child can be made smaller than its requisition by the user. Setting “shrink” to false allows the application to set a minimum size. If “resize” is false for both children, then this is treated as if “resize” is true for both children.

The application can set the position of the slider as if it were set by the user, by calling set_position.

Shortcuts and Gestures#

The following signals have default keybindings:

accept_position
cancel_position
cycle_child_focus
cycle_handle_focus
move_handle
toggle_handle_focus

CSS nodes#

paned
├── <child>
├── separator[.wide]
╰── <child>

GtkPaned has a main CSS node with name paned, and a subnode for the separator with name separator. The subnode gets a .wide style class when the paned is supposed to be wide.

In horizontal orientation, the nodes are arranged based on the text direction, so in left-to-right mode, :first-child will select the leftmost child, while it will select the rightmost child in RTL layouts.

Creating a paned widget with minimum sizes.#

GtkWidget *hpaned = gtk_paned_new (GTK_ORIENTATION_HORIZONTAL);
GtkWidget *frame1 = gtk_frame_new (NULL);
GtkWidget *frame2 = gtk_frame_new (NULL);

gtk_widget_set_size_request (hpaned, 200, -1);

gtk_paned_set_start_child (GTK_PANED (hpaned), frame1);
gtk_paned_set_resize_start_child (GTK_PANED (hpaned), TRUE);
gtk_paned_set_shrink_start_child (GTK_PANED (hpaned), FALSE);
gtk_widget_set_size_request (frame1, 50, -1);

gtk_paned_set_end_child (GTK_PANED (hpaned), frame2);
gtk_paned_set_resize_end_child (GTK_PANED (hpaned), FALSE);
gtk_paned_set_shrink_end_child (GTK_PANED (hpaned), FALSE);
gtk_widget_set_size_request (frame2, 50, -1);

Constructors#

class Paned

classmethod new(orientation: Orientation) → Widget#

Creates a new GtkPaned widget.

Parameters:: orientation – the paned’s orientation.

Methods#

class Paned

get_end_child() → Widget | None#: Retrieves the end child of the given GtkPaned.

get_position() → int#: Obtains the position of the divider between the two panes.

get_resize_end_child() → bool#: Returns whether the end_child can be resized.

get_resize_start_child() → bool#: Returns whether the start_child can be resized.

get_shrink_end_child() → bool#: Returns whether the end_child can shrink.

get_shrink_start_child() → bool#: Returns whether the start_child can shrink.

get_start_child() → Widget | None#: Retrieves the start child of the given GtkPaned.

get_wide_handle() → bool#: Gets whether the separator should be wide.

set_end_child(child: Widget | None = None) → None#

Sets the end child of paned to child.

If child is NULL, the existing child will be removed.

Parameters:: child – the widget to add

set_position(position: int) → None#

Sets the position of the divider between the two panes.

Parameters:: position – pixel position of divider, a negative value means that the position is unset

set_resize_end_child(resize: bool) → None#

Sets whether the end_child can be resized.

Parameters:: resize – true to let the end child be resized

set_resize_start_child(resize: bool) → None#

Sets whether the start_child can be resized.

Parameters:: resize – true to let the start child be resized

set_shrink_end_child(resize: bool) → None#

Sets whether the end_child can shrink.

Parameters:: resize – true to let the end child be shrunk

set_shrink_start_child(resize: bool) → None#

Sets whether the start_child can shrink.

Parameters:: resize – true to let the start child be shrunk

set_start_child(child: Widget | None = None) → None#

Sets the start child of paned to child.

If child is NULL, the existing child will be removed.

Parameters:: child – the widget to add

set_wide_handle(wide: bool) → None#

Sets whether the separator should be wide.

Parameters:: wide – the new value for the wide_handle property

Properties#

class Paned

props.end_child: Widget#: The second child.

props.max_position: int#

The largest possible value for the position property.

This property is derived from the size and shrinkability of the widget’s children.

props.min_position: int#

The smallest possible value for the position property.

This property is derived from the size and shrinkability of the widget’s children.

props.position: int#: Position of the separator in pixels, from the left/top.

props.position_set: bool#: Whether the position property has been set.

props.resize_end_child: bool#: Determines whether the second child expands and shrinks along with the paned widget.

props.resize_start_child: bool#: Determines whether the first child expands and shrinks along with the paned widget.

props.shrink_end_child: bool#: Determines whether the second child can be made smaller than its requisition.

props.shrink_start_child: bool#: Determines whether the first child can be made smaller than its requisition.

props.start_child: Widget#: The first child.

props.wide_handle: bool#

Whether the GtkPaned should provide a stronger visual separation.

For example, this could be set when a paned contains two Notebooks, whose tab rows would otherwise merge visually.

Signals#

class Paned.signals

accept_position() → bool#

Emitted to accept the current position of the handle when moving it using key bindings.

This is a keybinding signal.

The default binding for this signal is Return or Space.

cancel_position() → bool#

Emitted to cancel moving the position of the handle using key bindings.

The position of the handle will be reset to the value prior to moving it.

This is a keybinding signal.

The default binding for this signal is Escape.

cycle_child_focus(reversed: bool) → bool#

Emitted to cycle the focus between the children of the paned.

This is a keybinding signal.

The default binding is F6.

Parameters:: reversed – whether cycling backward or forward

cycle_handle_focus(reversed: bool) → bool#

Emitted to cycle whether the paned should grab focus to allow the user to change position of the handle by using key bindings.

This is a keybinding signal.

The default binding for this signal is F8.

Parameters:: reversed – whether cycling backward or forward

move_handle(scroll_type: ScrollType) → bool#

Emitted to move the handle with key bindings.

This is a keybinding signal.

The default bindings for this signal are Ctrl+:kbd:←, ←, Ctrl+:kbd:→, →, Ctrl+:kbd:↑, ↑, Ctrl+:kbd:↓, ↓, PgUp, PgDn, Home, End.

Parameters:: scroll_type – a GtkScrollType

toggle_handle_focus() → bool#

Emitted to accept the current position of the handle and then move focus to the next widget in the focus chain.

This is a keybinding signal.

The default binding is Tab.