Signals

active_tab_rearranged ( int idx_to )

Emitted when the active tab is rearranged via mouse drag. See drag_to_rearrange_enabled.

tab_button_pressed ( int tab )

Emitted when a tab's right button is pressed. See set_tab_button_icon.

tab_changed ( int tab )

Emitted when switching to another tab.

tab_clicked ( int tab )

Emitted when a tab is clicked, even if it is the current tab.

tab_close_pressed ( int tab )

Emitted when a tab's close button is pressed.

Note: Tabs are not removed automatically once the close button is pressed, this behavior needs to be programmed manually. For example:

$TabBar.tab_close_pressed.connect($TabBar.remove_tab)

GetNode<TabBar>("TabBar").TabClosePressed += GetNode<TabBar>("TabBar").RemoveTab;

tab_hovered ( int tab )

Emitted when a tab is hovered by the mouse.

tab_rmb_clicked ( int tab )

Emitted when a tab is right-clicked. select_with_rmb must be enabled.

tab_selected ( int tab )

Emitted when a tab is selected via click, directional input, or script, even if it is the current tab.

Enumerations

enum AlignmentMode:

AlignmentMode ALIGNMENT_LEFT = 0

Places tabs to the left.

AlignmentMode ALIGNMENT_CENTER = 1

Places tabs in the middle.

AlignmentMode ALIGNMENT_RIGHT = 2

Places tabs to the right.

AlignmentMode ALIGNMENT_MAX = 3

Represents the size of the AlignmentMode enum.

enum CloseButtonDisplayPolicy:

CloseButtonDisplayPolicy CLOSE_BUTTON_SHOW_NEVER = 0

Never show the close buttons.

CloseButtonDisplayPolicy CLOSE_BUTTON_SHOW_ACTIVE_ONLY = 1

Only show the close button on the currently active tab.

CloseButtonDisplayPolicy CLOSE_BUTTON_SHOW_ALWAYS = 2

Show the close button on all tabs.

CloseButtonDisplayPolicy CLOSE_BUTTON_MAX = 3

Represents the size of the CloseButtonDisplayPolicy enum.

Property Descriptions

bool clip_tabs = true

• void set_clip_tabs ( bool value )
• bool get_clip_tabs ( )

If true, tabs overflowing this node's width will be hidden, displaying two navigation buttons instead. Otherwise, this node's minimum size is updated so that all tabs are visible.

int current_tab = 0

• void set_current_tab ( int value )
• int get_current_tab ( )

Select tab at index tab_idx.

bool drag_to_rearrange_enabled = false

• void set_drag_to_rearrange_enabled ( bool value )
• bool get_drag_to_rearrange_enabled ( )

If true, tabs can be rearranged with mouse drag.

int max_tab_width = 0

• void set_max_tab_width ( int value )
• int get_max_tab_width ( )

Sets the maximum width which all tabs should be limited to. Unlimited if set to 0.

bool scroll_to_selected = true

• void set_scroll_to_selected ( bool value )
• bool get_scroll_to_selected ( )

If true, the tab offset will be changed to keep the currently selected tab visible.

bool scrolling_enabled = true

• void set_scrolling_enabled ( bool value )
• bool get_scrolling_enabled ( )

if true, the mouse's scroll wheel can be used to navigate the scroll view.

bool select_with_rmb = false

• void set_select_with_rmb ( bool value )
• bool get_select_with_rmb ( )

If true, enables selecting a tab with the right mouse button.

AlignmentMode tab_alignment = 0

• void set_tab_alignment ( AlignmentMode value )
• AlignmentMode get_tab_alignment ( )

Sets the position at which tabs will be placed. See AlignmentMode for details.

CloseButtonDisplayPolicy tab_close_display_policy = 0

• void set_tab_close_display_policy ( CloseButtonDisplayPolicy value )
• CloseButtonDisplayPolicy get_tab_close_display_policy ( )

Sets when the close button will appear on the tabs. See CloseButtonDisplayPolicy for details.

int tab_count = 0

• void set_tab_count ( int value )
• int get_tab_count ( )

The number of tabs currently in the bar.

int tabs_rearrange_group = -1

• void set_tabs_rearrange_group ( int value )
• int get_tabs_rearrange_group ( )

TabBars with the same rearrange group ID will allow dragging the tabs between them. Enable drag with drag_to_rearrange_enabled.

Setting this to -1 will disable rearranging between TabBars.

Method Descriptions

void add_tab ( String title="", Texture2D icon=null )

Adds a new tab.

void clear_tabs ( )

Clears all tabs.

void ensure_tab_visible ( int idx )

Moves the scroll view to make the tab visible.

bool get_offset_buttons_visible ( ) const

Returns true if the offset buttons (the ones that appear when there's not enough space for all tabs) are visible.

int get_previous_tab ( ) const

Returns the previously active tab index.

Texture2D get_tab_button_icon ( int tab_idx ) const

Returns the icon for the right button of the tab at index tab_idx or null if the right button has no icon.

Texture2D get_tab_icon ( int tab_idx ) const

Returns the icon for the tab at index tab_idx or null if the tab has no icon.

int get_tab_icon_max_width ( int tab_idx ) const

Returns the maximum allowed width of the icon for the tab at index tab_idx.

int get_tab_idx_at_point ( Vector2 point ) const

Returns the index of the tab at local coordinates point. Returns -1 if the point is outside the control boundaries or if there's no tab at the queried position.

String get_tab_language ( int tab_idx ) const

Returns tab title language code.

Variant get_tab_metadata ( int tab_idx ) const

Returns the metadata value set to the tab at index tab_idx using set_tab_metadata. If no metadata was previously set, returns null by default.

int get_tab_offset ( ) const

Returns the number of hidden tabs offsetted to the left.

Rect2 get_tab_rect ( int tab_idx ) const

Returns tab Rect2 with local position and size.

TextDirection get_tab_text_direction ( int tab_idx ) const

Returns tab title text base writing direction.

String get_tab_title ( int tab_idx ) const

Returns the title of the tab at index tab_idx.

bool is_tab_disabled ( int tab_idx ) const

Returns true if the tab at index tab_idx is disabled.

bool is_tab_hidden ( int tab_idx ) const

Returns true if the tab at index tab_idx is hidden.

void move_tab ( int from, int to )

Moves a tab from from to to.

void remove_tab ( int tab_idx )

Removes the tab at index tab_idx.

bool select_next_available ( )

Selects the first available tab with greater index than the currently selected. Returns true if tab selection changed.

bool select_previous_available ( )

Selects the first available tab with lower index than the currently selected. Returns true if tab selection changed.

void set_tab_button_icon ( int tab_idx, Texture2D icon )

Sets an icon for the button of the tab at index tab_idx (located to the right, before the close button), making it visible and clickable (See tab_button_pressed). Giving it a null value will hide the button.

void set_tab_disabled ( int tab_idx, bool disabled )

If disabled is true, disables the tab at index tab_idx, making it non-interactable.

void set_tab_hidden ( int tab_idx, bool hidden )

If hidden is true, hides the tab at index tab_idx, making it disappear from the tab area.

void set_tab_icon ( int tab_idx, Texture2D icon )

Sets an icon for the tab at index tab_idx.

void set_tab_icon_max_width ( int tab_idx, int width )

Sets the maximum allowed width of the icon for the tab at index tab_idx. This limit is applied on top of the default size of the icon and on top of icon_max_width. The height is adjusted according to the icon's ratio.

void set_tab_language ( int tab_idx, String language )

Sets language code of tab title used for line-breaking and text shaping algorithms, if left empty current locale is used instead.

void set_tab_metadata ( int tab_idx, Variant metadata )

Sets the metadata value for the tab at index tab_idx, which can be retrieved later using get_tab_metadata.

void set_tab_text_direction ( int tab_idx, TextDirection direction )

Sets tab title base writing direction.

void set_tab_title ( int tab_idx, String title )

Sets a title for the tab at index tab_idx.

Theme Property Descriptions

Color drop_mark_color = Color(1, 1, 1, 1)

Modulation color for the drop_mark icon.

Color font_disabled_color = Color(0.875, 0.875, 0.875, 0.5)

Font color of disabled tabs.

Color font_hovered_color = Color(0.95, 0.95, 0.95, 1)

Font color of the currently hovered tab. Does not apply to the selected tab.

Color font_outline_color = Color(1, 1, 1, 1)

The tint of text outline of the tab name.

Color font_selected_color = Color(0.95, 0.95, 0.95, 1)

Font color of the currently selected tab.

Color font_unselected_color = Color(0.7, 0.7, 0.7, 1)

Font color of the other, unselected tabs.

int h_separation = 4

The horizontal separation between the elements inside tabs.

int icon_max_width = 0

The maximum allowed width of the tab's icon. This limit is applied on top of the default size of the icon, but before the value set with set_tab_icon_max_width. The height is adjusted according to the icon's ratio.

int outline_size = 0

The size of the tab text outline.

Note: If using a font with FontFile.multichannel_signed_distance_field enabled, its FontFile.msdf_pixel_range must be set to at least twice the value of outline_size for outline rendering to look correct. Otherwise, the outline may appear to be cut off earlier than intended.

Font font

The font used to draw tab names.

int font_size

Font size of the tab names.

Texture2D close

The icon for the close button (see tab_close_display_policy).

Texture2D decrement

Icon for the left arrow button that appears when there are too many tabs to fit in the container width. When the button is disabled (i.e. the first tab is visible), it appears semi-transparent.

Texture2D decrement_highlight

Icon for the left arrow button that appears when there are too many tabs to fit in the container width. Used when the button is being hovered with the cursor.

Texture2D drop_mark

Icon shown to indicate where a dragged tab is gonna be dropped (see drag_to_rearrange_enabled).

Texture2D increment

Icon for the right arrow button that appears when there are too many tabs to fit in the container width. When the button is disabled (i.e. the last tab is visible) it appears semi-transparent.

Texture2D increment_highlight

Icon for the right arrow button that appears when there are too many tabs to fit in the container width. Used when the button is being hovered with the cursor.

StyleBox button_highlight

Background of the tab and close buttons when they're being hovered with the cursor.

StyleBox button_pressed

Background of the tab and close buttons when it's being pressed.

StyleBox tab_disabled

The style of disabled tabs.

StyleBox tab_focus

StyleBox used when the TabBar is focused. The tab_focus StyleBox is displayed over the base StyleBox of the selected tab, so a partially transparent StyleBox should be used to ensure the base StyleBox remains visible. A StyleBox that represents an outline or an underline works well for this purpose. To disable the focus visual effect, assign a StyleBoxEmpty resource. Note that disabling the focus visual effect will harm keyboard/controller navigation usability, so this is not recommended for accessibility reasons.

StyleBox tab_hovered

The style of the currently hovered tab. Does not apply to the selected tab.

Note: This style will be drawn with the same width as tab_unselected at minimum.

StyleBox tab_selected

The style of the currently selected tab.

StyleBox tab_unselected

The style of the other, unselected tabs.