MirOS Manual: XSetClipMask(3), XSetClipOrigin(3), XSetClipRectangles(3)


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

NAME

     XSetClipOrigin, XSetClipMask, XSetClipRectangles - GC con-
     venience routines

SYNTAX

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

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

     int XSetClipRectangles(Display *display, GC gc, int
          clip_x_origin, int clip_y_origin, XRectangle rectan-
          gles[], 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 relative
     to the origin of whatever destination drawable is specified
     in the graphics request.

     XSetClipOrigin can generate BadAlloc and BadGC errors.

     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.

XFree86                   Version 4.5.0                         1

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

     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 rela-
     tive to the origin of whatever destination drawable is
     specified in a graphics request. The rectangle coordinates
     are interpreted relative to the clip-origin. The rectangles
     should be nonintersecting, or the graphics results will be
     undefined. Note that the list of rectangles can be empty,
     which effectively disables output. 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 rectangles
     can be specified with the ordering argument. This may pro-
     vide faster operation by the server. If an incorrect order-
     ing is specified, the X server may generate a BadMatch
     error, but it is not required to do so. If no error is gen-
     erated, 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 correct
               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 specific
               range is specified for an argument, the full range
               defined by the argument's type is accepted.  Any
               argument defined as a set of alternatives can gen-
               erate this error.

SEE ALSO

     XCreateGC(3X11), XDrawRectangle(3X11), XQueryBestSize(3X11),
     XSetArcMode(3X11), XSetFillStyle(3X11), XSetFont(3X11),
     XSetLineAttributes(3X11), XSetState(3X11), XSetTile(3X11)

XFree86                   Version 4.5.0                         2

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

     Xlib - C Language X Interface

XFree86                   Version 4.5.0                         3

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