Publisher Context Considerations

When you display a canvas app inside the publisher, the context information you receive from the signed request or from a getContext() call contains information specific to the publisher:

• Location—If the canvas app is in the publisher, then the Environment.displayLocation field contains the value Publisher.

• Size—The Environment.Dimensions object contains information about the size of the canvas app.

  • The canvas app height will be the height you specify in the quick action that you created.

  • If you selected Create Actions Automatically when you created the canvas app, the canvas app height defaults to 200 pixels.

  • The canvas app width defaults to 521 pixels, which is the same as the maximum width of a canvas app in the publisher.

  • The maximum height of a canvas app in the publisher is 500 pixels.

  • The maximum width of a canvas app in the publisher is 521 pixels.

  • This code snippet shows the default size values of a canvas app in the publisher:

  • The publisher is a fixed width of 521 pixels. For example, if you resize your canvas app to be 400 pixels, the publisher width remains 521 pixels.

  • You can use the resize() method in the Canvas SDK to change the values of your canvas app up to the maxHeight and maxWidth.

See Also

• Create the Action Manually
• Environment
• Dimensions
• Resizing a Canvas App
• Publisher Canvas App Access Considerations
• Canvas Apps in the Chatter Feed