| 摘要 |
An electronic device for displaying a cursor with a trail is provided. The user may control electronic device operations by navigating the cursor on a display. To assist the user in identifying the current location of the cursor, the electronic device may define and display a trail indicating the prior positions of the cursor. For example, the electronic device may identify previous cursor positions and draw a curve, for example a spline, connecting the previous cursor positions and the current cursor position. The curve may have a varying width, thus forming a trail for which the wider portion is adjacent the cursor, and for which the narrower portion is adjacent the tip of the curve. The electronic device may instead or in addition modify the opacity of the curve, for example based on the instantaneous speed of the cursor. In some embodiments, other trail characteristics (e.g., size, color, opacity, path) may be modified based on prior cursor movements or cursor speed.
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