XSetClipOrigin(3X11)XSetClipOrigin(3X11)NAME
XSetClipOrigin, XSetClipMask, XSetClipRectangles - GC convenience rou‐
tines
SYNOPSIS
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, rectan‐
gles, n, ordering)
Display *display;
GC gc;
int clip_x_origin, clip_y_origin;
XRectangle rectangles[];
int n;
int ordering;
ARGUMENTS
Specifies the connection to the X server. Specify the x and y coordi‐
nates of the clip-mask origin. Specifies the GC. Specifies the number
of rectangles. Specifies the ordering relations on the rectangles. You
can pass Unsorted, YSorted, YXSorted, or YXBanded. Specifies the
pixmap or None. 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 specified GC to the
specified pixmap. If the clip-mask is set to None, the pixels 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 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 provide faster operation
by the server. If an incorrect 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 nonde‐
creasing 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
The server failed to allocate the requested resource or server memory.
A value for a GContext argument does not name a defined GContext. Some
argument or pair of arguments has the correct type and range but fails
to match in some other way required by the request. 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 generate this error.
SEE ALSOXCreateGC(3X11), XDrawRectangle(3X11), XQueryBestSize(3X11), XSetArc‐
Mode(3X11), XSetFillStyle(3X11), XSetFont(3X11), XSetLineAt‐
tributes(3X11), XSetState(3X11), XSetTile(3X11)
Xlib -- C Language X Interface
XSetClipOrigin(3X11)
