Add a control that displays a digital signature in Screens.
The Signature control allows the Request participant to sign and her or his signature in a Screen. The entered signature automatically saves, but is not committed until the signer submits the Screen. The signer may undo the entered signature prior to submitting the Screen. The submitted signature is recorded as a PNG image that may be referenced from an Image control by referencing the Signature control's Variable Name setting value.
This control is only available for Form-type Screens. See Screen Types.
To add a Signature control to a Screen, the Signature package must be installed.
Your user account or group membership must have the following permissions to design a Screen unless your user account has the Make this user a Super Admin setting selected:
Screens: Edit Screens
Screens: View Screens
See the Screens permissions or ask your Administrator for assistance.
A ProcessMaker Platform package is required to do this.
Permissions are required to do this.
Follow these steps to add this control to the Screen:
View the Screen page to which to add the control.
Drag the Signature icon into the Screen Builder canvas. Existing controls on the Screen Builder canvas adjust positioning based on where you drag the control.
Place into the Screen Builder canvas where you want the control to display on the Screen.
Configure the Image control. See Settings.
Validate that the control is configured correctly. See Validate Your Screen.
Below is a digital Signature added in Preview mode.
See Move a Control on the Page.
Copying a control also copies the current settings of that control. The copied control displays below other controls placed on that Screen page.
Follow these steps to copy a control:
Select the control to be copied.
As a best practice, after copying a control, change the Variable Name setting value for the copied control to its own unique variable value. Otherwise, in-progress Requests that use this Screen read from and send data to both controls.
Deleting a control also deletes configuration for that control. If you add another control, it will have default settings.
Follow these steps to delete a control from a Screen page:
Select the control to be deleted.
The Signature control has the following panels that contains settings:
Click the control while in Design mode, and then click the Variable panel that is on the right-side of the Screen Builder canvas.
Below are settings for the Signature control in the Variable panel:
​Required
Enter the alphanumeric name that identifies this Screen. This field is required.
Use the Variable Name setting value in the following ways:
Reference this control's value in a different Screen Builder control. To do so, use mustache syntax and reference this control's Variable Name value in the target control. Example: {{ SignatureControl }}
.
Reference this value in Visibility Rule setting expressions.
See best practices when editing a Request variable name.
Select the Required setting to clarify that the signature is required to submit the form.
Click the control while in Design mode, and then click the Configuration panel that is on the right-side of the Screen Builder canvas.
Below is the setting for the Signature control in the Configuration panel:
The height may be set in any of the following units:
em unit, based upon the relative font-size of the parent font size (em)
inches (in)
percentage (%)
pixels (px)
relative to the viewpoint's height (vh)
relative to the viewpoint's width (vw)
rem unit, based upon the font-size value of the root element (rem)
100px is the default height setting.
If the entered value is not in the correct format, the following validation error displays: The Pad Height format is invalid..
Click the control while in Design mode, and then click the Advanced panel that is on the right-side of the Screen Builder canvas.
Below are the settings for the Signature control in the Advanced panel:
Note the following regarding how to use visibility rules:
To make this control hidden until another control contains a value, enter the Variable Name setting value of that control to this control's Visibility Rule setting.
Select on which device types this control displays:
Desktop: The control displays only on desktop devices. Enable the Show for Desktop toggle key.
Mobile: The control displays only on mobile devices. Enable the Show for Mobile toggle key.
See the following best practices regarding custom CSS in Screens:
Expand the Input Fields category to the left of the Screen Builder canvas, and then locate the Signature icon.
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Click the Duplicate Control button. The control copies with its current settings, and then displays below other controls placed on that page.
Click the Delete button. The control deletes. Other controls on that Screen page adjust their locations automatically.
Reference this control by its Variable Name setting's value. The Data Preview panel in Preview mode corresponds the Signature control's textual content with that Textarea control's Variable Name value. In the example below, SignatureControl
is the Variable Name setting's value.
Set the vertical spacing of the Signature control's pad: the space into which the signature is entered.
Specify an expression that indicates the condition(s) under which this control displays. See Expression Syntax Components. If this setting does not have an expression, then this control displays by default.
Both: The control displays on both desktop and mobile devices. Both toggle keys are enabled by default.
Enter the value to represent this control in custom CSS syntax when in Custom CSS mode. As a best practice, use the same CSS Selector Name value on different controls of the same type to apply the same custom CSS style to all those controls.