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	Chapters
	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 A, B, C, D, E

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CHAPTER 8. SHEET PROTOCOLS


8.4.1 Repaint Protocol Functions

=> dispatch-repaint sheet region [Generic Function]
Requests a repaint of the region region within the sheet sheet. The region is given in sheet
coordinates. Depending on the class of the sheet, this may cause queue-repaint or handle-
repaint to be invoked.

All CLIM implementations must support repainting for regions that are rectangles or region sets
composed entirely of rectangles.

=> queue-repaint sheet region [Generic Function]
Requests that a repaint event for the region region be placed in the input queue of the sheet
sheet. A program that reads events out of the queue will be expected to call handle-event
for the repaint region; the method for that generic function on repaint events will generally call
repaint-sheet.

=> handle-repaint sheet medium region [Generic Function]
Recursively causes repainting of the sheet sheet and any of its children that overlap the region
region. medium is the medium to use for the repainting; if it is nil, handle-repaint will allocate
a medium and associate it with the sheet. handle-repaint will call repaint-sheet on sheet,
and then call handle-repaint on all of the children of sheet.

=> repaint-sheet sheet region [Generic Function]
Implements repainting for a given sheet class. It may only be called on a sheet that has an
associated medium. sheet and region are as for dispatch-repaint.

8.4.2 Repaint Protocol Classes

=> standard-repainting-mixin [Class]
Defines a dispatch-repaint method that calls queue-repaint.

=> immediate-repainting-mixin [Class]
Defines a dispatch-repaint method that calls handle-repaint.

=> mute-repainting-mixin [Class]
Defines a dispatch-repaint method that calls queue-repaint, and a method on repaint-
sheet that does nothing. This means that its children will be recursively repainted when the
repaint event is handled.

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Page 66	Table of Contents	Index	Page 68
	Chapters
	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 A, B, C, D, E