XFillRectangle(3X11)X Version 11 (Release 6.6XFillRectangle(3X11)
NAME
XFillRectangle, XFillRectangles, XFillPolygon, XFillArc,
XFillArcs - fill rectangles, polygons, or arcs
SYNTAX
XFillRectangle(display, d, gc, x, y, width, height)
Display *display;
Drawable d;
GC gc;
int x, y;
unsigned int width, height;
XFillRectangles(display, d, gc, rectangles, nrectangles)
Display *display;
Drawable d;
GC gc;
XRectangle *rectangles;
int nrectangles;
XFillPolygon(display, d, gc, points, npoints, shape, mode)
Display *display;
Drawable d;
GC gc;
XPoint *points;
int npoints;
int shape;
int mode;
XFillArc(display, d, gc, x, y, width, height, angle1,
angle2)
Display *display;
Drawable d;
GC gc;
int x, y;
unsigned int width, height;
int angle1, angle2;
XFillArcs(display, d, gc, arcs, narcs)
Display *display;
Drawable d;
GC gc;
XArc *arcs;
int narcs;
ARGUMENTS
angle1 Specifies the start of the arc relative to the
three-o'clock position from the center, in units
of degrees * 64.
angle2 Specifies the path and extent of the arc relative
to the start of the arc, in units of degrees * 64.
Page 1 (printed 7/20/06)
XFillRectangle(3X11)X Version 11 (Release 6.6XFillRectangle(3X11)
arcs Specifies an array of arcs.
d Specifies the drawable.
display Specifies the connection to the X server.
gc Specifies the GC.
mode Specifies the coordinate mode. You can pass
CoordModeOrigin or CoordModePrevious.
narcs Specifies the number of arcs in the array.
npoints Specifies the number of points in the array.
nrectangles
Specifies the number of rectangles in the array.
points Specifies an array of points.
rectangles
Specifies an array of rectangles.
shape Specifies a shape that helps the server to improve
performance. You can pass Complex, Convex, or
Nonconvex.
width
height Specify the width and height, which are the
dimensions of the rectangle to be filled or the
major and minor axes of the arc.
x
y Specify the x and y coordinates, which are
relative to the origin of the drawable and specify
the upper-left corner of the rectangle.
DESCRIPTION
The XFillRectangle and XFillRectangles functions fill the
specified rectangle or rectangles as if a four-point
FillPolygon protocol request were specified for each
rectangle:
[x,y] [x+width,y] [x+width,y+height] [x,y+height]
Each function uses the x and y coordinates, width and height
dimensions, and GC you specify.
XFillRectangles fills the rectangles in the order listed in
the array. For any given rectangle, XFillRectangle and
XFillRectangles do not draw a pixel more than once. If
rectangles intersect, the intersecting pixels are drawn
Page 2 (printed 7/20/06)
XFillRectangle(3X11)X Version 11 (Release 6.6XFillRectangle(3X11)
multiple times.
Both functions use these GC components: function, plane-
mask, fill-style, subwindow-mode, clip-x-origin, clip-y-
origin, and clip-mask. They also use these GC mode-
dependent components: foreground, background, tile, stipple,
tile-stipple-x-origin, and tile-stipple-y-origin.
XFillRectangle and XFillRectangles can generate BadDrawable,
BadGC, and BadMatch errors.
XFillPolygon fills the region closed by the specified path.
The path is closed automatically if the last point in the
list does not coincide with the first point. XFillPolygon
does not draw a pixel of the region more than once.
CoordModeOrigin treats all coordinates as relative to the
origin, and CoordModePrevious treats all coordinates after
the first as relative to the previous point.
Depending on the specified shape, the following occurs:
o If shape is Complex, the path may self-intersect. Note
that contiguous coincident points in the path are not
treated as self-intersection.
o If shape is Convex, for every pair of points inside the
polygon, the line segment connecting them does not
intersect the path. If known by the client, specifying
Convex can improve performance. If you specify Convex
for a path that is not convex, the graphics results are
undefined.
o If shape is Nonconvex, the path does not self-
intersect, but the shape is not wholly convex. If known
by the client, specifying Nonconvex instead of Complex
may improve performance. If you specify Nonconvex for a
self-intersecting path, the graphics results are
undefined.
The fill-rule of the GC controls the filling behavior of
self-intersecting polygons.
This function uses these GC components: function, plane-
mask, fill-style, fill-rule, subwindow-mode, clip-x-origin,
clip-y-origin, and clip-mask. It also uses these GC mode-
dependent components: foreground, background, tile, stipple,
tile-stipple-x-origin, and tile-stipple-y-origin.
XFillPolygon can generate BadDrawable, BadGC, BadMatch, and
BadValue errors.
For each arc, XFillArc or XFillArcs fills the region closed
Page 3 (printed 7/20/06)
XFillRectangle(3X11)X Version 11 (Release 6.6XFillRectangle(3X11)
by the infinitely thin path described by the specified arc
and, depending on the arc-mode specified in the GC, one or
two line segments. For ArcChord, the single line segment
joining the endpoints of the arc is used. For ArcPieSlice,
the two line segments joining the endpoints of the arc with
the center point are used. XFillArcs fills the arcs in the
order listed in the array. For any given arc, XFillArc and
XFillArcs do not draw a pixel more than once. If regions
intersect, the intersecting pixels are drawn multiple times.
Both functions use these GC components: function, plane-
mask, fill-style, arc-mode, subwindow-mode, clip-x-origin,
clip-y-origin, and clip-mask. They also use these GC mode-
dependent components: foreground, background, tile, stipple,
tile-stipple-x-origin, and tile-stipple-y-origin.
XFillArc and XFillArcs can generate BadDrawable, BadGC, and
BadMatch errors.
DIAGNOSTICS
BadDrawable
A value for a Drawable argument does not name a
defined Window or Pixmap.
BadGC A value for a GContext argument does not name a
defined GContext.
BadMatch An InputOnly window is used as a Drawable.
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
generate this error.
SEE ALSO
XDrawArc(3X11), XDrawPoint(3X11), XDrawRectangle(3X11)
Xlib - C Language X Interface
Page 4 (printed 7/20/06)
