GtkPaned

GtkPaned — A widget with two adjustable panes

Functions

GtkWidget * gtk_paned_new ()
void gtk_paned_add1 ()
void gtk_paned_add2 ()
void gtk_paned_pack1 ()
void gtk_paned_pack2 ()
GtkWidget * gtk_paned_get_child1 ()
GtkWidget * gtk_paned_get_child2 ()
void gtk_paned_set_position ()
gint gtk_paned_get_position ()
GdkWindow * gtk_paned_get_handle_window ()
void gtk_paned_set_wide_handle ()
gboolean gtk_paned_get_wide_handle ()

Properties

int max-position Read
int min-position Read
int position Read / Write
gboolean position-set Read / Write
gboolean wide-handle Read / Write

Child Properties

gboolean resize Read / Write
gboolean shrink Read / Write

Style Properties

int handle-size Read

Signals

gboolean accept-position Action
gboolean cancel-position Action
gboolean cycle-child-focus Action
gboolean cycle-handle-focus Action
gboolean move-handle Action
gboolean toggle-handle-focus Action

Types and Values

struct GtkPaned

Object Hierarchy

    GObject
    ╰── GInitiallyUnowned
        ╰── GtkWidget
            ╰── GtkContainer
                ╰── GtkPaned
                    ├── GtkHPaned
                    ╰── GtkVPaned

Implemented Interfaces

GtkPaned implements AtkImplementorIface, GtkBuildable and GtkOrientable.

Includes

#include <gtk/gtk.h>

Description

GtkPaned has two panes, arranged either 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 gtk_paned_pack1() and gtk_paned_pack2(). 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 GtkFrame with the shadow type set to GTK_SHADOW_IN 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 gtk_paned_set_position().

CSS nodes

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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 of the children are always arranged from left to right. So :first-child will always select the leftmost child, regardless of text direction.

Creating a paned widget with minimum sizes.

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GtkWidget *hpaned = gtk_paned_new (GTK_ORIENTATION_HORIZONTAL);
GtkWidget *frame1 = gtk_frame_new (NULL);
GtkWidget *frame2 = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame1), GTK_SHADOW_IN);
gtk_frame_set_shadow_type (GTK_FRAME (frame2), GTK_SHADOW_IN);

gtk_widget_set_size_request (hpaned, 200, -1);

gtk_paned_pack1 (GTK_PANED (hpaned), frame1, TRUE, FALSE);
gtk_widget_set_size_request (frame1, 50, -1);

gtk_paned_pack2 (GTK_PANED (hpaned), frame2, FALSE, FALSE);
gtk_widget_set_size_request (frame2, 50, -1);

Functions

gtk_paned_new ()

GtkWidget *
gtk_paned_new (GtkOrientation orientation);

Creates a new GtkPaned widget.

Parameters

orientation

the paned’s orientation.

  

Returns

a new GtkPaned.

Since: 3.0

gtk_paned_add1 ()

void
gtk_paned_add1 (GtkPaned *paned,
                GtkWidget *child);

Adds a child to the top or left pane with default parameters. This is equivalent to gtk_paned_pack1 (paned, child, FALSE, TRUE).

Parameters

paned

a paned widget

  

child

the child to add

  

gtk_paned_add2 ()

void
gtk_paned_add2 (GtkPaned *paned,
                GtkWidget *child);

Adds a child to the bottom or right pane with default parameters. This is equivalent to gtk_paned_pack2 (paned, child, TRUE, TRUE).

Parameters

paned

a paned widget

  

child

the child to add

  

gtk_paned_pack1 ()

void
gtk_paned_pack1 (GtkPaned *paned,
                 GtkWidget *child,
                 gboolean resize,
                 gboolean shrink);

Adds a child to the top or left pane.

Parameters

paned

a paned widget

  

child

the child to add

  

resize

should this child expand when the paned widget is resized.

  

shrink

can this child be made smaller than its requisition.

  

gtk_paned_pack2 ()

void
gtk_paned_pack2 (GtkPaned *paned,
                 GtkWidget *child,
                 gboolean resize,
                 gboolean shrink);

Adds a child to the bottom or right pane.

Parameters

paned

a paned widget

  

child

the child to add

  

resize

should this child expand when the paned widget is resized.

  

shrink

can this child be made smaller than its requisition.

  

gtk_paned_get_child1 ()

GtkWidget *
gtk_paned_get_child1 (GtkPaned *paned);

Obtains the first child of the paned widget.

Parameters

paned

a GtkPaned widget

  

Returns

first child, or NULL if it is not set.

[nullable][transfer none]

Since: 2.4

gtk_paned_get_child2 ()

GtkWidget *
gtk_paned_get_child2 (GtkPaned *paned);

Obtains the second child of the paned widget.

Parameters

paned

a GtkPaned widget

  

Returns

second child, or NULL if it is not set.

[nullable][transfer none]

Since: 2.4

gtk_paned_set_position ()

void
gtk_paned_set_position (GtkPaned *paned,
                        gint position);

Sets the position of the divider between the two panes.

Parameters

paned

a GtkPaned widget

  

position

pixel position of divider, a negative value means that the position is unset.

  

gtk_paned_get_position ()

gint
gtk_paned_get_position (GtkPaned *paned);

Obtains the position of the divider between the two panes.

Parameters

paned

a GtkPaned widget

  

Returns

position of the divider

gtk_paned_get_handle_window ()

GdkWindow *
gtk_paned_get_handle_window (GtkPaned *paned);

Returns the GdkWindow of the handle. This function is useful when handling button or motion events because it enables the callback to distinguish between the window of the paned, a child and the handle.

Parameters

paned

a GtkPaned

  

Returns

the paned’s handle window.

[transfer none]

Since: 2.20

gtk_paned_set_wide_handle ()

void
gtk_paned_set_wide_handle (GtkPaned *paned,
                           gboolean wide);

Sets the “wide-handle” property.

Parameters

paned

a GtkPaned

  

wide

the new value for the “wide-handle” property

  

Since: 3.16

gtk_paned_get_wide_handle ()

gboolean
gtk_paned_get_wide_handle (GtkPaned *paned);

Gets the “wide-handle” property.

Parameters

paned

a GtkPaned

  

Returns

TRUE if the paned should have a wide handle

Since: 3.16

Types and Values

struct GtkPaned

struct GtkPaned;

Property Details

The “max-position” property

  “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.

Owner: GtkPaned

Flags: Read

Allowed values: >= 0

Default value: 2147483647

Since: 2.4

The “min-position” property

  “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.

Owner: GtkPaned

Flags: Read

Allowed values: >= 0

Default value: 0

Since: 2.4

The “position” property

  “position”                 int

Position of paned separator in pixels (0 means all the way to the left/top).

Owner: GtkPaned

Flags: Read / Write

Allowed values: >= 0

Default value: 0

The “position-set” property

  “position-set”             gboolean

TRUE if the Position property should be used.

Owner: GtkPaned

Flags: Read / Write

Default value: FALSE

The “wide-handle” property

  “wide-handle”              gboolean

Setting this property to TRUE indicates that the paned needs to provide stronger visual separation (e.g. because it separates between two notebooks, whose tab rows would otherwise merge visually).

Owner: GtkPaned

Flags: Read / Write

Default value: FALSE

Since: 3.16

Child Property Details

The “resize” child property

  “resize”                   gboolean

The "resize" child property determines whether the child expands and shrinks along with the paned widget.

Owner: GtkPaned

Flags: Read / Write

Default value: TRUE

Since: 2.4

The “shrink” child property

  “shrink”                   gboolean

The "shrink" child property determines whether the child can be made smaller than its requisition.

Owner: GtkPaned

Flags: Read / Write

Default value: TRUE

Since: 2.4

Style Property Details

The “handle-size” style property

  “handle-size”              int

Width of handle.

Owner: GtkPaned

Flags: Read

Allowed values: >= 0

Default value: 5

Signal Details

The “accept-position” signal

gboolean
user_function (GtkPaned *widget,
               gpointer  user_data)

The ::accept-position signal is a keybinding signal which gets emitted to accept the current position of the handle when moving it using key bindings.

The default binding for this signal is Return or Space.

Parameters

widget

the object that received the signal

  

user_data

user data set when the signal handler was connected.

  

Flags: Action

Since: 2.0

The “cancel-position” signal

gboolean
user_function (GtkPaned *widget,
               gpointer  user_data)

The ::cancel-position signal is a keybinding signal which gets 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.

The default binding for this signal is Escape.

Parameters

widget

the object that received the signal

  

user_data

user data set when the signal handler was connected.

  

Flags: Action

Since: 2.0

The “cycle-child-focus” signal

gboolean
user_function (GtkPaned *widget,
               gboolean  reversed,
               gpointer  user_data)

The ::cycle-child-focus signal is a keybinding signal which gets emitted to cycle the focus between the children of the paned.

The default binding is f6.

Parameters

widget

the object that received the signal

  

reversed

whether cycling backward or forward

  

user_data

user data set when the signal handler was connected.

  

Flags: Action

Since: 2.0

The “cycle-handle-focus” signal

gboolean
user_function (GtkPaned *widget,
               gboolean  reversed,
               gpointer  user_data)

The ::cycle-handle-focus signal is a keybinding signal which gets emitted to cycle whether the paned should grab focus to allow the user to change position of the handle by using key bindings.

The default binding for this signal is f8.

Parameters

widget

the object that received the signal

  

reversed

whether cycling backward or forward

  

user_data

user data set when the signal handler was connected.

  

Flags: Action

Since: 2.0

The “move-handle” signal

gboolean
user_function (GtkPaned     *widget,
               GtkScrollType scroll_type,
               gpointer      user_data)

The ::move-handle signal is a keybinding signal which gets emitted to move the handle when the user is using key bindings to move it.

Parameters

widget

the object that received the signal

  

scroll_type

a GtkScrollType

  

user_data

user data set when the signal handler was connected.

  

Flags: Action

Since: 2.0

The “toggle-handle-focus” signal

gboolean
user_function (GtkPaned *widget,
               gpointer  user_data)

The ::toggle-handle-focus is a keybinding signal which gets emitted to accept the current position of the handle and then move focus to the next widget in the focus chain.

The default binding is Tab.

Parameters

widget

the object that received the signal

  

user_data

user data set when the signal handler was connected.

  

Flags: Action

Since: 2.0

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