About screen properties

A set of screen properties appears in the Screen Profile Editor. These properties define the physical and functional characteristics of each screen in a profile. Assigning a value to each property is required to configure a screen.

Name Property

Each screen defined in a screen profile must be uniquely named. The border of the Name field turns red if you enter an invalid screen name.

Orientation Property

The orientation of a screen can be either landscape or portrait. A screen's width is greater than its height when oriented in landscape mode. In portrait mode, screen height is greater than its width.

Changing a screen's orientation changes the width and height values shown in the Resolution property field. For example, when the resolution is 1920 w x 1080 h, changing the orientation from Landscape to Portrait changes the resolution to 1080 w x 1920 h.

Resolution Property

The Resolution property field shows common screen resolutions in a drop-down list. The ratio of the width of a screen by its height in pixels is the aspect ratio. Changing orientation reverses width and height values shown in a screen resolution.

Aspect Ratio

The Aspect Ratio property is an automatically calculated ratio of a screen's width to height by pixel counts. The Screen Profile Editor shows the aspect ratio of a screen in the form of a well known value. If an aspect ratio does not fall in a range of a well known value, then the aspect ratio is represented by a double data type rounded to two decimal points

Has Task Bar

The Has Taskbar property indicates whether the selected screen shows a task bar or not. Task bar information is considered when adjusting the size of a layout to fit a maximized screen. As task bar can differ in size based on themes or physical size and is only an approximation.

If you select the Taskbar property then the Taskbar Position field appears with options to position the taskbar at the Top, Bottom, Left or Right of a screen border.

Is Touchscreen

A screen touch lock determines how screen touch gestures are supported while a ViewApp is running.

A touch lock can be configured to:

• Support all touch interactions of a ViewApp.

• Prevent users from interacting with machinery while interacting with related controls on touch screens. The risk of accidentally entering a machinery command with a touch gesture is reduced by forcing the user to keep the touch lock active by pressing the lock icon continuously while operating screen controls.

• Restrict access to a subset of supported touch gestures to prevent accidental interactions with a ViewApp.

  Touch Lock Configuration

You can set three Touch Lock properties when configuring a screen profile.

• Is Touchscreen

  • Disabled

    Disabled is the default. No touch lock appears on the screen while a view application is running. You can interact with a ViewApp or its contents using all supported touch gestures.

  • Enabled

    A touch lock appears on the screen and restricts the usage of touch gestures to protect a ViewApp.

• Touch Lock Level

  The Touch Lock Level property becomes accessible only when the Is Touchscreen property is enabled.

  • None

    The touch lock is disabled and users can interact with a view application or its contents to the full extent to which touch is supported. None is the default and no touch lock icon appears on the screen of a running ViewApp.

  • Commands Locked

    In Commands Locked mode, all touch gestures are blocked when the touch lock is active. A touch lock icon is green to indicate the touch lock is active or in a locked state. Mouse or keyboard interactions are still possible.

    Pressing the touch lock icon during runtime deactivates or unlocks the touch lock to enable you to interact with a view application using all supported touch gestures. A touch lock icon turns red to indicate the touch lock is in an unlocked state.

    Commands Locked mode does not block writes to I/O in any way, shape, or form.

  • Two Handed Operation

    In Two Handed Operation mode, single finger content selection gestures are blocked by the touch lock, but two and three finger pane level gestures are permissible. Pressing on the touch lock icon deactivates the touch lock enabling you to interact with a view application using all touch gestures including single finger content gestures.

• Touch Lock Position:

  Touch Lock Position specifies the placement of the touch lock icon on the screen. This property is enabled only if the Touch Lock Level property is set to Commands Locked or Two Handed Operation.

  Touch Lock Position provides options to place the Touch Lock icon at the bottom left or bottom right of a screen.

  Scope of a Touch Lock During Runtime

• One Touch Lock can be configured for each screen assigned to a ViewApp.

• When Touch Lock is present during runtime, the possible touch gestures are specified by the configuration of that screen.

• When Touch Lock is absent or deactivated, a user can perform all supported touch actions on the corresponding touch screen.

• If there are multiple layouts per screen, then touch interactions on all layouts depend on the state of Touch Lock.

• If there are layouts that span multiple touch screens, the configuration of the Touch Lock on the primary screen of the layout determines touch functionality for other screens.