XSetClipMask man page on BSDOS

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XSetClipOrigin(3X11)	XLIB FUNCTIONS	   XSetClipOrigin(3X11)

NAME
       XSetClipOrigin, XSetClipMask, XSetClipRectangles - GC con-
       venience routines

SYNTAX
       XSetClipOrigin(display, gc, clip_x_origin, clip_y_origin)
	     Display *display;
	     GC gc;
	     int clip_x_origin, clip_y_origin;

       XSetClipMask(display, gc, pixmap)
	     Display *display;
	     GC gc;
	     Pixmap pixmap;

       XSetClipRectangles(display, gc, clip_x_origin,
       clip_y_origin, rectangles, n, ordering)
	     Display *display;
	     GC gc;
	     int clip_x_origin, clip_y_origin;
	     XRectangle rectangles[];
	     int n;
	     int ordering;

ARGUMENTS
       display	Specifies the connection to the X server.

       clip_x_origin
       clip_y_origin
		 Specify the x and y coordinates of the clip-mask
		 origin.

       gc	Specifies the GC.

       n	 Specifies the number of rectangles.

       ordering Specifies the ordering relations on the rectan-
		 gles.	You can pass Unsorted, YSorted, YXSorted,
		 or YXBanded.

       pixmap	Specifies the pixmap or None.

       rectangles
		 Specifies an array of rectangles that define the
		 clip-mask.

DESCRIPTION
       The XSetClipOrigin function sets the clip origin in the
       specified GC.  The clip-mask origin is interpreted rela-
       tive to the origin of whatever destination drawable is
       specified in the graphics request.

       XSetClipOrigin can generate BadAlloc and BadGC errors.

X Version 11		Release 6.4				1

XSetClipOrigin(3X11)	XLIB FUNCTIONS	   XSetClipOrigin(3X11)

       The XSetClipMask function sets the clip-mask in the speci-
       fied GC to the specified pixmap. If the clip-mask is set
       to None, the pixels are are always drawn (regardless of
       the clip-origin).

       XSetClipMask can generate BadAlloc, BadGC, BadMatch, and
       BadValue errors.

       The XSetClipRectangles function changes the clip-mask in
       the specified GC to the specified list of rectangles and
       sets the clip origin.  The output is clipped to remain
       contained within the rectangles. The clip-origin is
       interpreted relative to the origin of whatever destination
       drawable is specified in a graphics request.  The rectan-
       gle coordinates are interpreted relative to the clip-ori-
       gin.  The rectangles should be nonintersecting, or the
       graphics results will be undefined.  Note that the list of
       rectangles can be empty, which effectively disables out-
       put.  This is the opposite of passing None as the clip-
       mask in XCreateGC, XChangeGC, and XSetClipMask.

       If known by the client, ordering relations on the rectan-
       gles can be specified with the ordering argument.  This
       may provide faster operation by the server.  If an incor-
       rect ordering is specified, the X server may generate a
       BadMatch error, but it is not required to do so. If no
       error is generated, the graphics results are undefined.
       Unsorted means the rectangles are in arbitrary order.
       YSorted means that the rectangles are nondecreasing in
       their Y origin.	YXSorted additionally constrains YSorted
       order in that all rectangles with an equal Y origin are
       nondecreasing in their X origin. YXBanded additionally
       constrains YXSorted by requiring that, for every possible
       Y scanline, all rectangles that include that scanline have
       an identical Y origins and Y extents.

       XSetClipRectangles can generate BadAlloc, BadGC, BadMatch,
       and BadValue errors.

DIAGNOSTICS
       BadAlloc The server failed to allocate the requested
		 resource or server memory.

       BadGC	A value for a GContext argument does not name a
		 defined GContext.

       BadMatch Some argument or pair of arguments has the cor-
		 rect type and range but fails to match in some
		 other way required by the request.

       BadValue Some numeric value falls outside the range of
		 values accepted by the request.  Unless a spe-
		 cific range is specified for an argument, the
		 full range defined by the argument's type is

X Version 11		Release 6.4				2

XSetClipOrigin(3X11)	XLIB FUNCTIONS	   XSetClipOrigin(3X11)

		 accepted.  Any argument defined as a set of
		 alternatives can generate this error.

SEE ALSO
       XCreateGC(3X11), XDrawRectangle(3X11), XQueryBest-
       Size(3X11), XSetArcMode(3X11), XSetFillStyle(3X11), XSet-
       Font(3X11), XSetLineAttributes(3X11), XSetState(3X11),
       XSetTile(3X11)
       Xlib - C Language X Interface

X Version 11		Release 6.4				3

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