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LineEdit¶
Inherits: Control < CanvasItem < Node < Object
An input field for single-line text.
描述¶
LineEdit provides an input field for editing a single line of text. It features many built-in shortcuts that are always available (Ctrl here maps to Cmd on macOS):
Ctrl + C: Copy
Ctrl + X: Cut
Ctrl + V or Ctrl + Y: Paste/"yank"
Ctrl + Z: Undo
Ctrl + ~: Swap input direction.
Ctrl + Shift + Z: Redo
Ctrl + U: Delete text from the caret position to the beginning of the line
Ctrl + K: Delete text from the caret position to the end of the line
Ctrl + A: Select all text
Up Arrow/Down Arrow: Move the caret to the beginning/end of the line
On macOS, some extra keyboard shortcuts are available:
Cmd + F: Same as Right Arrow, move the caret one character right
Cmd + B: Same as Left Arrow, move the caret one character left
Cmd + P: Same as Up Arrow, move the caret to the previous line
Cmd + N: Same as Down Arrow, move the caret to the next line
Cmd + D: Same as Delete, delete the character on the right side of caret
Cmd + H: Same as Backspace, delete the character on the left side of the caret
Cmd + A: Same as Home, move the caret to the beginning of the line
Cmd + E: Same as End, move the caret to the end of the line
Cmd + Left Arrow: Same as Home, move the caret to the beginning of the line
Cmd + Right Arrow: Same as End, move the caret to the end of the line
属性¶
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focus_mode |
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mouse_default_cursor_shape |
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Methods¶
void |
clear ( ) |
void |
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void |
delete_text ( int from_column, int to_column ) |
void |
deselect ( ) |
get_menu ( ) const |
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get_scroll_offset ( ) const |
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get_selection_from_column ( ) const |
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get_selection_to_column ( ) const |
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has_selection ( ) const |
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void |
insert_text_at_caret ( String text ) |
is_menu_visible ( ) const |
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void |
menu_option ( int option ) |
void |
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void |
select_all ( ) |
Theme Properties¶
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信号¶
text_change_rejected ( String rejected_substring )
Emitted when appending text that overflows the max_length. The appended text is truncated to fit max_length, and the part that couldn't fit is passed as the rejected_substring argument.
text_changed ( String new_text )
Emitted when the text changes.
text_submitted ( String new_text )
Emitted when the user presses @GlobalScope.KEY_ENTER on the LineEdit.
Enumerations¶
Cuts (copies and clears) the selected text.
Copies the selected text.
Pastes the clipboard text over the selected text (or at the caret's position).
Non-printable escape characters are automatically stripped from the OS clipboard via String.strip_escapes.
Erases the whole LineEdit text.
Selects the whole LineEdit text.
Undoes the previous action.
Reverse the last undo action.
ID of "Text Writing Direction" submenu.
Sets text direction to inherited.
Sets text direction to automatic.
Sets text direction to left-to-right.
Sets text direction to right-to-left.
Toggles control character display.
ID of "Insert Control Character" submenu.
Inserts left-to-right mark (LRM) character.
Inserts right-to-left mark (RLM) character.
Inserts start of left-to-right embedding (LRE) character.
Inserts start of right-to-left embedding (RLE) character.
Inserts start of left-to-right override (LRO) character.
Inserts start of right-to-left override (RLO) character.
Inserts pop direction formatting (PDF) character.
Inserts Arabic letter mark (ALM) character.
Inserts left-to-right isolate (LRI) character.
Inserts right-to-left isolate (RLI) character.
Inserts first strong isolate (FSI) character.
Inserts pop direction isolate (PDI) character.
Inserts zero width joiner (ZWJ) character.
Inserts zero width non-joiner (ZWNJ) character.
Inserts word joiner (WJ) character.
Inserts soft hyphen (SHY) character.
Represents the size of the MenuItems enum.
enum VirtualKeyboardType:
VirtualKeyboardType KEYBOARD_TYPE_DEFAULT = 0
Default text virtual keyboard.
VirtualKeyboardType KEYBOARD_TYPE_MULTILINE = 1
Multiline virtual keyboard.
VirtualKeyboardType KEYBOARD_TYPE_NUMBER = 2
Virtual number keypad, useful for PIN entry.
VirtualKeyboardType KEYBOARD_TYPE_NUMBER_DECIMAL = 3
Virtual number keypad, useful for entering fractional numbers.
VirtualKeyboardType KEYBOARD_TYPE_PHONE = 4
Virtual phone number keypad.
VirtualKeyboardType KEYBOARD_TYPE_EMAIL_ADDRESS = 5
Virtual keyboard with additional keys to assist with typing email addresses.
VirtualKeyboardType KEYBOARD_TYPE_PASSWORD = 6
Virtual keyboard for entering a password. On most platforms, this should disable autocomplete and autocapitalization.
Note: This is not supported on Web. Instead, this behaves identically to KEYBOARD_TYPE_DEFAULT.
VirtualKeyboardType KEYBOARD_TYPE_URL = 7
Virtual keyboard with additional keys to assist with typing URLs.
Property Descriptions¶
HorizontalAlignment alignment = 0
void set_horizontal_alignment ( HorizontalAlignment value )
HorizontalAlignment get_horizontal_alignment ( )
Text alignment as defined in the HorizontalAlignment enum.
bool caret_blink = false
If true, makes the caret blink.
float caret_blink_interval = 0.65
The interval at which the caret blinks (in seconds).
int caret_column = 0
The caret's column position inside the LineEdit. When set, the text may scroll to accommodate it.
bool caret_force_displayed = false
If true, the LineEdit will always show the caret, even if focus is lost.
bool caret_mid_grapheme = false
Allow moving caret, selecting and removing the individual composite character components.
Note: Backspace is always removing individual composite character components.
bool clear_button_enabled = false
If true, the LineEdit will show a clear button if text is not empty, which can be used to clear the text quickly.
If true, the context menu will appear when right-clicked.
bool deselect_on_focus_loss_enabled = true
If true, the selected text will be deselected when focus is lost.
bool drag_and_drop_selection_enabled = true
If true, allow drag and drop of selected text.
bool draw_control_chars = false
If true, control characters are displayed.
bool editable = true
If false, existing text cannot be modified and new text cannot be added.
bool expand_to_text_length = false
If true, the LineEdit width will increase to stay longer than the text. It will not compress if the text is shortened.
bool flat = false
If true, the LineEdit doesn't display decoration.
String language = ""
Language code used for line-breaking and text shaping algorithms. If left empty, current locale is used instead.
int max_length = 0
Maximum number of characters that can be entered inside the LineEdit. If 0, there is no limit.
When a limit is defined, characters that would exceed max_length are truncated. This happens both for existing text contents when setting the max length, or for new text inserted in the LineEdit, including pasting. If any input text is truncated, the text_change_rejected signal is emitted with the truncated substring as parameter.
Example:
text = "Hello world"
max_length = 5
# `text` becomes "Hello".
max_length = 10
text += " goodbye"
# `text` becomes "Hello good".
# `text_change_rejected` is emitted with "bye" as parameter.
Text = "Hello world";
MaxLength = 5;
// `Text` becomes "Hello".
MaxLength = 10;
Text += " goodbye";
// `Text` becomes "Hello good".
// `text_change_rejected` is emitted with "bye" as parameter.
bool middle_mouse_paste_enabled = true
If false, using middle mouse button to paste clipboard will be disabled.
Note: This method is only implemented on Linux.
String placeholder_text = ""
Text shown when the LineEdit is empty. It is not the LineEdit's default value (see text).
Texture2D right_icon
Sets the icon that will appear in the right end of the LineEdit if there's no text, or always, if clear_button_enabled is set to false.
bool secret = false
If true, every character is replaced with the secret character (see secret_character).
String secret_character = "•"
The character to use to mask secret input (defaults to "•"). Only a single character can be used as the secret character.
bool select_all_on_focus = false
If true, the LineEdit will select the whole text when it gains focus.
bool selecting_enabled = true
If false, it's impossible to select the text using mouse nor keyboard.
bool shortcut_keys_enabled = true
If false, using shortcuts will be disabled.
StructuredTextParser structured_text_bidi_override = 0
void set_structured_text_bidi_override ( StructuredTextParser value )
StructuredTextParser get_structured_text_bidi_override ( )
Set BiDi algorithm override for the structured text.
Array structured_text_bidi_override_options = []
void set_structured_text_bidi_override_options ( Array value )
Array get_structured_text_bidi_override_options ( )
Set additional options for BiDi override.
String text = ""
String value of the LineEdit.
Note: Changing text using this property won't emit the text_changed signal.
TextDirection text_direction = 0
void set_text_direction ( TextDirection value )
TextDirection get_text_direction ( )
Base text writing direction.
bool virtual_keyboard_enabled = true
If true, the native virtual keyboard is shown when focused on platforms that support it.
VirtualKeyboardType virtual_keyboard_type = 0
void set_virtual_keyboard_type ( VirtualKeyboardType value )
VirtualKeyboardType get_virtual_keyboard_type ( )
Specifies the type of virtual keyboard to show.
Method Descriptions¶
void clear ( )
Erases the LineEdit's text.
void delete_char_at_caret ( )
Deletes one character at the caret's current position (equivalent to pressing Delete).
void delete_text ( int from_column, int to_column )
Deletes a section of the text going from position from_column to to_column. Both parameters should be within the text's length.
void deselect ( )
Clears the current selection.
Returns the PopupMenu of this LineEdit. By default, this menu is displayed when right-clicking on the LineEdit.
You can add custom menu items or remove standard ones. Make sure your IDs don't conflict with the standard ones (see MenuItems). For example:
func _ready():
var menu = get_menu()
# Remove all items after "Redo".
menu.item_count = menu.get_item_index(MENU_REDO) + 1
# Add custom items.
menu.add_separator()
menu.add_item("Insert Date", MENU_MAX + 1)
# Connect callback.
menu.id_pressed.connect(_on_item_pressed)
func _on_item_pressed(id):
if id == MENU_MAX + 1:
insert_text_at_caret(Time.get_date_string_from_system())
public override void _Ready()
{
var menu = GetMenu();
// Remove all items after "Redo".
menu.ItemCount = menu.GetItemIndex(LineEdit.MenuItems.Redo) + 1;
// Add custom items.
menu.AddSeparator();
menu.AddItem("Insert Date", LineEdit.MenuItems.Max + 1);
// Add event handler.
menu.IdPressed += OnItemPressed;
}
public void OnItemPressed(int id)
{
if (id == LineEdit.MenuItems.Max + 1)
{
InsertTextAtCaret(Time.GetDateStringFromSystem());
}
}
Warning: This is a required internal node, removing and freeing it may cause a crash. If you wish to hide it or any of its children, use their Window.visible property.
float get_scroll_offset ( ) const
Returns the scroll offset due to caret_column, as a number of characters.
String get_selected_text ( )
Returns the text inside the selection.
int get_selection_from_column ( ) const
Returns the selection begin column.
int get_selection_to_column ( ) const
Returns the selection end column.
bool has_selection ( ) const
Returns true if the user has selected text.
void insert_text_at_caret ( String text )
Inserts text at the caret. If the resulting value is longer than max_length, nothing happens.
Returns whether the menu is visible. Use this instead of get_menu().visible to improve performance (so the creation of the menu is avoided).
Executes a given action as defined in the MenuItems enum.
void select ( int from=0, int to=-1 )
Selects characters inside LineEdit between from and to. By default, from is at the beginning and to at the end.
text = "Welcome"
select() # Will select "Welcome".
select(4) # Will select "ome".
select(2, 5) # Will select "lco".
Text = "Welcome";
Select(); // Will select "Welcome".
Select(4); // Will select "ome".
Select(2, 5); // Will select "lco".
void select_all ( )
Selects the whole String.
Theme Property Descriptions¶
Color caret_color = Color(0.95, 0.95, 0.95, 1)
Color of the LineEdit's caret (text cursor). This can be set to a fully transparent color to hide the caret entirely.
Color clear_button_color = Color(0.875, 0.875, 0.875, 1)
Color used as default tint for the clear button.
Color clear_button_color_pressed = Color(1, 1, 1, 1)
Color used for the clear button when it's pressed.
Color font_color = Color(0.875, 0.875, 0.875, 1)
Default font color.
Color font_outline_color = Color(1, 1, 1, 1)
The tint of text outline of the LineEdit.
Color font_placeholder_color = Color(0.875, 0.875, 0.875, 0.6)
Font color for placeholder_text.
Color font_selected_color = Color(1, 1, 1, 1)
Font color for selected text (inside the selection rectangle).
Color font_uneditable_color = Color(0.875, 0.875, 0.875, 0.5)
Font color when editing is disabled.
Color selection_color = Color(0.5, 0.5, 0.5, 1)
Color of the selection rectangle.
int caret_width = 1
The caret's width in pixels. Greater values can be used to improve accessibility by ensuring the caret is easily visible, or to ensure consistency with a large font size.
int minimum_character_width = 4
Minimum horizontal space for the text (not counting the clear button and content margins). This value is measured in count of 'M' characters (i.e. this number of 'M' characters can be displayed without scrolling).
int outline_size = 0
The size of the 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
Font used for the text.
int font_size
Font size of the LineEdit's text.
Texture2D clear
Texture for the clear button. See clear_button_enabled.
StyleBox focus
Background used when LineEdit has GUI focus. The focus StyleBox is displayed over the base StyleBox, 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 normal
Default background for the LineEdit.
StyleBox read_only
Background used when LineEdit is in read-only mode (editable is set to false).