Checkbox input component

The checkbox is an input component that allows writing one of two numeric values, depending on the checked state of the component.

Features

Configuration

This section controls the behavior of the checkbox:

Checked value - the value that will be written when the checkbox is checked.

Unchecked value - the value that will be written when the checkbox is not checked.

note

Only numeric values are supported for checked and unchecked value properties.

Target variable - the input variable to which the value will be written.

Style

The style properties define the default look and feel of the component (i.e. no state is active or defined).

Background color - the background color of the component. A hex value can be input in one the formats:

• #RRGGBB
• #RRGGBBAA
• #RGB
• #RGBA

Where:

• R=red color component
• G=green color component
• B=blue color component
• A=alpha (transparency) component

Alternatively, the integrated color picker can be used to visually pick a color:

Checked color - the checkbox background color used to show the checked state.

Label color - the color used for the checkbox text.

Check mark color - the color used to show the check symbol.

Border color - the color used for the component border.

Shadow - allows specifying a component shadow using the built-in shadow editor:

• X offset - the shadow horizontal offset in pixels (can be negative)
• Y offset - the shadow vertical offset in pixels (can be negative)
• Blur - the shadow blur radius. A higher value results in a blurrier shadow, while a lower value will result in a more sharp shadow.
• Color picker - the shadow color

Opacity - controls the transparency of the component.

States

This section allows defining condition-based visual states. These can be used to alter the look of the component based on external factors.

States variable - the runtime variable which is used to evaluate the state. The value of this variable is compared against the value of each state to decide which is the active state. If no match is found, the component will be displayed using its default values.

Test value - this is a test value that can be used to change the active state at design time. It simulates receiving the test value as the state variable value.

States - the list of defined states. Use the green button to add a new state:

State properties

Trigger - Chooses the trigger value for the state. If set to Value, the HMI will compare the value received through the States variable against the provided numeric value. If set to Variable, it will evaluate the variable value and compare it against the States variable value. If the two values are equal, the compoent will switch to this state.

Background color - the background color of the component. A hex value can be input in one the formats:

• #RRGGBB
• #RRGGBBAA
• #RGB
• #RGBA

Where:

• R=red color component
• G=green color component
• B=blue color component
• A=alpha (transparency) component

Alternatively, the integrated color picker can be used to visually pick a color:

Checked color - the checkbox background color used to show the checked state.

Label color - the color used for the checkbox text.

Check mark color - the color used to show the check symbol.

Border color - the color used for the component border.

Shadow - allows specifying a component shadow using the built-in shadow editor:

• X offset - the shadow horizontal offset in pixels (can be negative)
• Y offset - the shadow vertical offset in pixels (can be negative)
• Blur - the shadow blur radius. A higher value results in a blurrier shadow, while a lower value will result in a more sharp shadow.
• Color picker - the shadow color

Opacity - controls the transparency of the component.

note

The opacity and background alpha component both affect the transparency of the component, but have different behaviors. The opacity affects the whole component, while the background alpha affects only the background transparency.

Behavior - allows special behavior in the specified state:

• none - no special behavior (component is rendered normally)
• blink - the component will blink periodically
• disabled - the component is rendered as disabled and will not respond to mouse or keyboard interaction
• hide - the component is completely hidden

note

The hide behavior is different than using an opacity of 0. A hidden component will not receive any mouse or keyboard interaction, instead any component below it will receive them. On the contrary, a component with 0 opacity (fully transparent) still exists on the layout and will receive mouse or keyboard interactions.

Typography

The typography section contains properties that affect the label text:

Text - the text of the label

Font size - the size of the font used for the label text

Layout

Checkbox size - the size of the checkbox square.

Border width - controls the width of the border on each side. Values can be manually input as:

• <top>px <right>px <bottom>px <left>px
• <top_bottom>px <left_right>px
• <all>px

Alternatively, the built-in border editor can be used for a visual input:

Border radius: Border radius for the border corners. Values can be manually input as:

• <top-left>px <top-right>px <bottom-left>px <bottom-right>px
• <left>px <right>px
• <all>px

Alternatively, the built-in border radius editor can be used for a visual input:

Position

The position section contains properties which affect the position and size of the component. These can be changed by dragging and resizing the component with the mouse, or directly, by manually entering the values:

Left - distance from the left edge in pixels

Top - distance from the top edge in pixels

Width - component width in pixels

Height - component height in pixels