A DoubleField lets users input a numerical double value into an application. It accepts and displays text input. You can set placeholder text to provide hints or instructions to the user on what to enter. You can also add validation functions to ensure that the entered data meets certain requirements.
Note: To align a DoubleField with other fields in an InspectorA Unity window that displays information about the currently selected GameObject, asset or project settings, allowing you to inspect and edit the values. More info
See in Glossary window, simply apply the .unity-base-field__aligned USS class to it. For more information, refer to BaseField.
You can create a DoubleField with UI(User Interface) Allows a user to interact with your application. Unity currently supports three UI systems. More info
See in Glossary Builder, UXML, and C#.
To create a DoubleField with C#, create a new instance of a DoubleField object. For example:
DoubleField myElement = new DoubleField("Label text");
You can set a placeholder text for the element. You can also hide the placeholder text on focus.
Note: The placeholder text won’t display if you set a value for the element. To unset a value in UI Builder, right-click the Value field in the element’s Inspector tab and select Unset.
In C#, use the placeholder and the hidePlaceholderOnFocus properties through textEdition:
myElement.textEdition.placeholder = "Enter your value here";
myElement.textEdition.hidePlaceholderOnFocus = true;
To style the placeholder text, use the .unity-base-text-field__input--placeholder USS selector.
Input text is selectable by default. You can customize the selection behaviors such as selectAllOnMouseUP and selectAllOnFocus.
In C#, set them through textSelection:
myElement.textSelection.selectAllOnMouseUp = false;
myElement.textSelection.selectAllOnFocus = false;
C# class: DoubleField
Namespace: UnityEngine.UIElements
Base class: TextValueField_1
This element inherits the following attributes from its base class:
| Name | Type | Description |
|---|---|---|
auto-correction |
boolean |
Determines if the touch screen keyboard auto correction is turned on or off. |
binding-path |
string |
Path of the target property to be bound. |
emoji-fallback-support |
boolean |
Specifies the order in which the system should look for Emoji characters when rendering text. If this setting is enabled, the global Emoji Fallback list will be searched first for characters defined as Emoji in the Unicode 14.0 standard. |
focusable |
boolean |
True if the element can be focused. |
hide-mobile-input |
boolean |
Hides or shows the mobile input field. |
is-delayed |
boolean |
If set to true, the value property isn’t updated until either the user presses Enter or the text field loses focus. |
keyboard-type |
TouchScreenKeyboardType |
The type of mobile keyboard that will be used. |
label |
string |
The string representing the label that will appear beside the field. |
max-length |
int |
Maximum number of characters for the field. |
select-all-on-focus |
boolean |
Controls whether the element’s content is selected upon receiving focus. |
select-all-on-mouse-up |
boolean |
Controls whether the element’s content is selected when you mouse up for the first time. |
tabindex |
int |
An integer used to sort focusables in the focus ring. Must be greater than or equal to zero. |
value |
double |
The value associated with the field. |
vertical-scroller-visibility |
UIElements.ScrollerVisibility |
Option for controlling the visibility of the vertical scroll bar in the TextInputBaseField_1. |
This element also inherits the following attributes from VisualElement:
| Name | Type | Description |
|---|---|---|
content-container |
string |
Child elements are added to it, usually this is the same as the element itself. |
data-source |
Object |
Assigns a data source to this VisualElement which overrides any inherited data source. This data source is inherited by all children. |
data-source-path |
string |
Path from the data source to the value. |
name |
string |
The name of this VisualElement. Use this property to write USS selectors that target a specific element. The standard practice is to give an element a unique name. |
picking-mode |
UIElements.PickingMode |
Determines if this element can be pick during mouseEvents or IPanel.Pick queries. |
style |
string |
Reference to the style object of this element. Contains data computed from USS files or inline styles written to this object in C#. |
tooltip |
string |
Text to display inside an information box after the user hovers the element for a small amount of time. This is only supported in the Editor UI. |
usage-hints |
UIElements.UsageHints |
A combination of hint values that specify high-level intended usage patterns for the VisualElement. This property can only be set when the VisualElement is not yet part of a Panel. Once part of a Panel, this property becomes effectively read-only, and attempts to change it will throw an exception. The specification of proper UsageHints drives the system to make better decisions on how to process or accelerate certain operations based on the anticipated usage pattern. Note that those hints do not affect behavioral or visual results, but only affect the overall performance of the panel and the elements within. It’s advised to always consider specifying the proper UsageHints, but keep in mind that some UsageHints might be internally ignored under certain conditions (e.g. due to hardware limitations on the target platform). |
view-data-key |
string |
Used for view data persistence (ie. tree expanded states, scroll position, zoom level). This is the key used to save/load the view data from the view data store. Not setting this key will disable persistence for this VisualElement. For further information on view data persistence, see the wiki:UIE-ViewData|Unity Manual. |
The following table lists all the C# public property names and their related USS selector.
| C# property | USS selector | Description |
|---|---|---|
ussClassName |
.unity-double-field |
USS class name of elements of this type. |
labelUssClassName |
.unity-double-field__label |
USS class name of labels in elements of this type. |
inputUssClassName |
.unity-double-field__input |
USS class name of input elements in elements of this type. |
ussClassName |
.unity-base-text-field |
USS class name of elements of this type. |
labelUssClassName |
.unity-base-text-field__label |
USS class name of labels in elements of this type. |
inputUssClassName |
.unity-base-text-field__input |
USS class name of input elements in elements of this type. |
singleLineInputUssClassName |
.unity-base-text-field__input--single-line |
USS class name of single line input elements in elements of this type. |
multilineInputUssClassName |
.unity-base-text-field__input--multiline |
USS class name of multiline input elements in elements of this type. |
placeholderUssClassName |
.unity-base-text-field__input--placeholder |
USS class name of input elements when placeholder text is shown |
ussClassName |
.unity-base-field |
USS class name of elements of this type. |
labelUssClassName |
.unity-base-field__label |
USS class name of labels in elements of this type. |
inputUssClassName |
.unity-base-field__input |
USS class name of input elements in elements of this type. |
noLabelVariantUssClassName |
.unity-base-field--no-label |
USS class name of elements of this type, when there is no label. |
labelDraggerVariantUssClassName |
.unity-base-field__label--with-dragger |
USS class name of labels in elements of this type, when there is a dragger attached on them. |
mixedValueLabelUssClassName |
.unity-base-field__label--mixed-value |
USS class name of elements that show mixed values |
alignedFieldUssClassName |
.unity-base-field__aligned |
USS class name of elements that are aligned in a inspector element |
disabledUssClassName |
.unity-disabled |
USS class name of local disabled elements. |
You can also use the Matching Selectors section in the Inspector or the UI Toolkit Debugger to see which USS selectors affect the components of the VisualElement at every level of its hierarchy.