Abstract: A computer system displays a first object that includes at least a first portion of the first object and a second portion of the first object and detects a first gaze input that meets first criteria, wherein the first criteria require that the first gaze input is directed to the first portion of the first object in order for the first criteria to be met. In response, the computer system displays a first control element that corresponds to a first operation associated with the first object, wherein the first control element was not displayed prior to detecting that the first gaze input met the first criteria, and detects a first user input directed to the first control element. In response to detecting the first user input directed to the first control element, the computer system performs the first operation with respect to the first object.

Abstract: A computer system concurrently displays a view of a physical environment; and a computer-generated user interface element overlaid on the view of the physical environment. An appearance of the computer-generated user interface element is based on an appearance of the view of the physical environment on which the computer-generated user interface element is overlaid. In response to an appearance of the physical environment changing, the appearance of the computer-generated user interface element is updated at a first time based on a graphical composition of the appearance of one or more portions of the physical environment at different times prior to the first time, including: an appearance of a first portion of the physical environment at a second time that is before the first time; and an appearance of a second portion of the physical environment at a third time that is before the second time.

Abstract: A computer system displays an alert at a first position relative to the three-dimensional environment, the alert at least partially overlapping a first object in a first view. The first position has a respective spatial relationship to the user. The computer system detects movement of the user from a first viewpoint to a second viewpoint. At the second viewpoint, the computer system, in accordance with a determination that the alert is a first type of alert, displays the alert at a second position in the three-dimensional environment, the second position having the respective spatial relationship to the user and in accordance with a determination that the alert is a second type of alert, displays the three-dimensional environment from the second viewpoint without displaying the alert with the respective spatial relationship to the user.

Abstract: An electronic device displays an application user interface that includes a representation of a field of view of one or more cameras. The representation of the field of view is updated over time based on changes to current visual data detected by the one or more cameras, and the field of view includes a physical object in a three-dimensional space. While the device is a first distance from the physical object, the device displays a representation of a measurement that corresponds to the physical object. After the device has moved to a second distance from the physical object, the device displays, a second representation of the measurement that includes one or more scale markers along at least a portion of the second representation of the measurement that were not displayed with the first representation of the measurement.

Abstract: A method includes: while displaying a wake screen with a first media item as a background and foreground objects displayed over the first media item, detecting first user input that corresponds to a request to display a media gallery; in response to detecting the first user input, ceasing display of the foreground objects; detecting a second user input that corresponds to a request to navigate through media items in the media gallery; in response to detecting the second user input, replacing the first media item with a second media item in the media gallery; detecting a third input that corresponds to a request to dismiss the media gallery; and, in response to detecting the third user input, redisplaying the foreground objects on the display device over a media item from the media gallery that is selected as the background for the wake screen.