| 摘要 |
A method of and system for implementing dynamic translucent windows in a graphical user interface. Each translucent window has associated therewith a foreground buffer and a background buffer. Whenever a translucent window is updated, the system, starting with the lowest z-order updated translucent window, combines the updated translucent window's foreground and background buffers into a translucent image. If the translucent image is in a clip region, the system displays the portion of the translucent image in the clip region and turns off the update marker. If the translucent image is in a deferred clip region, the system copies the portion of the translucent image in any deferred clip region into the background buffer or buffers of the translucent window or windows that define the deferred clip region and marks the translucent window updated. The system then goes to the next lowest z-order updated translucent window and repeats the process until the topmost window is reached, thereby to propagate the translucency effect up through the stack of windows.
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