Интерактивная система просмотра системных руководств (man-ов)
XFillRectangle (3)
>> XFillRectangle (3) ( Разные man: Библиотечные вызовы )
NAME
XFillRectangle, XFillRectangles, XFillPolygon, XFillArc, XFillArcs - fill rectangles, polygons, or arcs
SYNTAX
int XFillRectangle(Display *display, Drawable d, GC
gc, int x, int y, unsigned int width, unsigned
int height);
int XFillRectangles(Display *display, Drawable d, GC
gc, XRectangle *rectangles, int nrectangles);
int XFillPolygon(Display *display, Drawable d, GC
gc, XPoint *points, int npoints, int shape,
int mode);
int XFillArc(Display *display, Drawable d, GC gc,
int x, int y, unsigned int width, unsigned int
height, int angle1, int angle2);
int XFillArcs(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.
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 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:
*
If shape is
Complex,
the path may self-intersect.
Note that contiguous coincident points in the path are not treated
as self-intersection.
*
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.
*
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 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.
