XFillRectangle(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 rela-
tive to the start of the arc, in units of
degrees * 64.
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 rela-
tive 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 rect-
angle:
[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
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-depen-
dent 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 coordi-
nates 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-inter-
sect, but the shape is not wholly convex. If known
by the client, specifying Nonconvex instead of Com-
plex may improve performance. If you specify Noncon-
vex 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-ori-
gin, 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 by the infinitely thin path described by the speci-
fied 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 end-
points 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 inter-
secting 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 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
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