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Build complications in Watch Face Studio

Watch Face Studio (WFS) helps you to create and customize watch face complications that display additional information on a watch face.

Complications display data from a data source. This lets you display additional information on your watch face without needing to use extra code.

Adding complications

To create a complication, select a complication slot from the Add Component button in WFS. You can allow users to customize the displayed data for each slot, as long as the data provider supports the data that the complication displays.

Figure 1. Complication slots

A complication slot consists of complication components and a slot bound. The components implement the layout, and the slot bound a cut-out through which the complication component appears, in a similar way to masking.

The following table lists the available complication slots, their slot bound shapes, and the supported layout types for the shapes.

Complication slot

Slot bound shape

Supported layout types

Circle Circle
  • Short text
  • Range value
  • Small image
  • Icon
Line Rectangle
  • Short text
Small box Rectangle
  • Short text
  • Range value
  • Small image
  • Icon
Large box Rectangle
  • Long text
  • Range value
  • Small image
Table 1. Complication slots and their slot bound shapes

Figure 2. Slot bound shapes

Configuring complications

You can configure various settings for a complication:

  • Editable or fixeded
    To allow the user to customize the complication data and provider, select Editable. To limit the complication data and provider to the values you define, select Fixed.

Figure 3. Editable complication setting

  • Supported types
    Select the layout types you want to show in the Default Provider list for your design. All layout types are selected by default.

If you select multiple complication layout types, you can reorder the list by priority. In the following figure, Short text is at the highest priority, so if an application provides ranged value and short text data, the complication slot shows the short text.

Figure 4. Example of supported types and default provider for a circle complication slot

  • Default provider
    The default provider defines which data is to be displayed in the complication slot when the watch face is installed. It uses the selected layout type.

Managing complication layouts

When you add a complication slot to your project, it contains 1 or more predefined layouts. The predefined layouts are optimized for the slot type, but you can modify them to suit your design needs. The supported layout types you define for the complication slot affect the available layouts.

Figure 5. Predefined layouts for each layout type

Testing complication designs

To check the size and placement of the data elements in your complication design, you can define test content, such as text or images, for each component in the complication. This test content is dummy content that is not shown on the actual watch face when you publish it.

Figure 6. Test content for complication design