305 lines
7.2 KiB
Plaintext
305 lines
7.2 KiB
Plaintext
.ds xT X Toolkit Intrinsics \- C Language Interface
|
|
.ds xW Athena X Widgets \- C Language X Toolkit Interface
|
|
.ds xL Xlib \- C Language X Interface
|
|
.ds xC Inter-Client Communication Conventions Manual
|
|
.na
|
|
.de Ds
|
|
.nf
|
|
.\\$1D \\$2 \\$1
|
|
.ft 1
|
|
.\".ps \\n(PS
|
|
.\".if \\n(VS>=40 .vs \\n(VSu
|
|
.\".if \\n(VS<=39 .vs \\n(VSp
|
|
..
|
|
.de De
|
|
.ce 0
|
|
.if \\n(BD .DF
|
|
.nr BD 0
|
|
.in \\n(OIu
|
|
.if \\n(TM .ls 2
|
|
.sp \\n(DDu
|
|
.fi
|
|
..
|
|
.de FD
|
|
.LP
|
|
.KS
|
|
.TA .5i 3i
|
|
.ta .5i 3i
|
|
.nf
|
|
..
|
|
.de FN
|
|
.fi
|
|
.KE
|
|
.LP
|
|
..
|
|
.de IN \" send an index entry to the stderr
|
|
..
|
|
.de C{
|
|
.KS
|
|
.nf
|
|
.D
|
|
.\"
|
|
.\" choose appropriate monospace font
|
|
.\" the imagen conditional, 480,
|
|
.\" may be changed to L if LB is too
|
|
.\" heavy for your eyes...
|
|
.\"
|
|
.ie "\\*(.T"480" .ft L
|
|
.el .ie "\\*(.T"300" .ft L
|
|
.el .ie "\\*(.T"202" .ft PO
|
|
.el .ie "\\*(.T"aps" .ft CW
|
|
.el .ft R
|
|
.ps \\n(PS
|
|
.ie \\n(VS>40 .vs \\n(VSu
|
|
.el .vs \\n(VSp
|
|
..
|
|
.de C}
|
|
.DE
|
|
.R
|
|
..
|
|
.de Pn
|
|
.ie t \\$1\fB\^\\$2\^\fR\\$3
|
|
.el \\$1\fI\^\\$2\^\fP\\$3
|
|
..
|
|
.de ZN
|
|
.ie t \fB\^\\$1\^\fR\\$2
|
|
.el \fI\^\\$1\^\fP\\$2
|
|
..
|
|
.de NT
|
|
.ne 7
|
|
.ds NO Note
|
|
.if \\n(.$>$1 .if !'\\$2'C' .ds NO \\$2
|
|
.if \\n(.$ .if !'\\$1'C' .ds NO \\$1
|
|
.ie n .sp
|
|
.el .sp 10p
|
|
.TB
|
|
.ce
|
|
\\*(NO
|
|
.ie n .sp
|
|
.el .sp 5p
|
|
.if '\\$1'C' .ce 99
|
|
.if '\\$2'C' .ce 99
|
|
.in +5n
|
|
.ll -5n
|
|
.R
|
|
..
|
|
. \" Note End -- doug kraft 3/85
|
|
.de NE
|
|
.ce 0
|
|
.in -5n
|
|
.ll +5n
|
|
.ie n .sp
|
|
.el .sp 10p
|
|
..
|
|
.ny0
|
|
.TH XDrawLine 3X11 "Release 5" "X Version 11" "XLIB FUNCTIONS"
|
|
.SH NAME
|
|
XDrawLine, XDrawLines, XDrawSegments, XSegment \- draw lines, polygons, and line structure
|
|
.SH SYNTAX
|
|
.\" $Header: XLine.f,v 1.1 88/02/26 09:58:43 mento Exp $
|
|
XDrawLine\^(\^\fIdisplay\fP, \fId\fP\^, \fIgc\fP\^, \fIx1\fP\^, \fIy1\fP\^, \fIx2\fP\^, \fIy2\fP\^)
|
|
.br
|
|
Display *\fIdisplay\fP\^;
|
|
.br
|
|
Drawable \fId\fP\^;
|
|
.br
|
|
GC \fIgc\fP\^;
|
|
.br
|
|
int \fIx1\fP\^, \fIy1\fP\^, \fIx2\fP\^, \fIy2\fP\^;
|
|
.LP
|
|
.\" $Header: XLines.f,v 1.1 88/02/26 10:01:21 mento Exp $
|
|
XDrawLines\^(\^\fIdisplay\fP, \fId\fP\^, \fIgc\fP\^, \fIpoints\fP\^, \fInpoints\fP\^, \fImode\fP\^)
|
|
.br
|
|
Display *\fIdisplay\fP\^;
|
|
.br
|
|
Drawable \fId\fP\^;
|
|
.br
|
|
GC \fIgc\fP\^;
|
|
.br
|
|
XPoint *\fIpoints\fP\^;
|
|
.br
|
|
int \fInpoints\fP\^;
|
|
.br
|
|
int \fImode\fP\^;
|
|
.LP
|
|
.\" $Header: XSegments.f,v 1.1 88/02/26 10:02:52 mento Exp $
|
|
XDrawSegments\^(\^\fIdisplay\fP, \fId\fP\^, \fIgc\fP\^, \fIsegments\fP\^, \fInsegments\fP\^)
|
|
.br
|
|
Display *\fIdisplay\fP\^;
|
|
.br
|
|
Drawable \fId\fP\^;
|
|
.br
|
|
GC \fIgc\fP\^;
|
|
.br
|
|
XSegment *\fIsegments\fP\^;
|
|
.br
|
|
int \fInsegments\fP\^;
|
|
.SH ARGUMENTS
|
|
.\" $Header: d.a,v 1.1 88/02/26 10:04:25 mento Exp $
|
|
.IP \fId\fP 1i
|
|
Specifies the drawable.
|
|
.\" $Header: display.a,v 1.1 88/02/26 10:26:29 mento Exp $
|
|
.IP \fIdisplay\fP 1i
|
|
Specifies the connection to the X server.
|
|
.\" $Header: gc.a,v 1.2 88/05/09 11:20:34 mento Exp $
|
|
.IP \fIgc\fP 1i
|
|
Specifies the GC.
|
|
.\" $Header: mode.a,v 1.4 88/05/18 07:53:37 mento Exp $
|
|
.IP \fImode\fP 1i
|
|
Specifies the coordinate mode.
|
|
You can pass
|
|
.ZN CoordModeOrigin
|
|
or
|
|
.ZN CoordModePrevious .
|
|
.\" $Header: npoints.a,v 1.1 88/02/26 10:29:46 mento Exp $
|
|
.IP \fInpoints\fP 1i
|
|
Specifies the number of points in the array.
|
|
.\" $Header: nsegments.a,v 1.1 88/02/26 10:29:48 mento Exp $
|
|
.IP \fInsegments\fP 1i
|
|
Specifies the number of segments in the array.
|
|
.\" $Header: points.a,v 1.1 88/02/26 10:30:33 mento Exp $
|
|
.IP \fIpoints\fP 1i
|
|
Specifies an array of points.
|
|
.\" $Header: segments.a,v 1.1 88/02/26 10:31:10 mento Exp $
|
|
.IP \fIsegments\fP 1i
|
|
Specifies an array of segments.
|
|
.\" $Header: x1y1x2y2.a,v 1.3 88/05/13 08:17:23 mento Exp $
|
|
.IP \fIx1\fP 1i
|
|
.br
|
|
.ns
|
|
.IP \fIy1\fP 1i
|
|
.br
|
|
.ns
|
|
.IP \fIx2\fP 1i
|
|
.br
|
|
.ns
|
|
.IP \fIy2\fP 1i
|
|
Specify the points (x1, y1) and (x2, y2) to be connected.
|
|
.SH DESCRIPTION
|
|
The
|
|
.ZN XDrawLine
|
|
function uses the components of the specified GC to
|
|
draw a line between the specified set of points (x1, y1) and (x2, y2).
|
|
It does not perform joining at coincident endpoints.
|
|
For any given line,
|
|
.ZN XDrawLine
|
|
does not draw a pixel more than once.
|
|
If lines intersect, the intersecting pixels are drawn multiple times.
|
|
.LP
|
|
The
|
|
.ZN XDrawLines
|
|
function uses the components of the specified GC to draw
|
|
npoints\-1 lines between each pair of points (point[i], point[i+1])
|
|
in the array of
|
|
.ZN XPoint
|
|
structures.
|
|
It draws the lines in the order listed in the array.
|
|
The lines join correctly at all intermediate points, and if the first and last
|
|
points coincide, the first and last lines also join correctly.
|
|
For any given line,
|
|
.ZN XDrawLines
|
|
does not draw a pixel more than once.
|
|
If thin (zero line-width) lines intersect,
|
|
the intersecting pixels are drawn multiple times.
|
|
If wide lines intersect, the intersecting pixels are drawn only once, as though
|
|
the entire
|
|
.ZN PolyLine
|
|
protocol request were a single, filled shape.
|
|
.ZN CoordModeOrigin
|
|
treats all coordinates as relative to the origin,
|
|
and
|
|
.ZN CoordModePrevious
|
|
treats all coordinates after the first as relative to the previous point.
|
|
.LP
|
|
The
|
|
.ZN XDrawSegments
|
|
function draws multiple, unconnected lines.
|
|
For each segment,
|
|
.ZN XDrawSegments
|
|
draws a
|
|
line between (x1, y1) and (x2, y2).
|
|
It draws the lines in the order listed in the array of
|
|
.ZN XSegment
|
|
structures and does not perform joining at coincident endpoints.
|
|
For any given line,
|
|
.ZN XDrawSegments
|
|
does not draw a pixel more than once.
|
|
If lines intersect, the intersecting pixels are drawn multiple times.
|
|
.LP
|
|
All three functions use these GC components:
|
|
function, plane-mask, line-width,
|
|
line-style, cap-style, fill-style, subwindow-mode,
|
|
clip-x-origin, clip-y-origin, and clip-mask.
|
|
The
|
|
.ZN XDrawLines
|
|
function also uses the join-style GC component.
|
|
All three functions also use these GC mode-dependent components:
|
|
foreground, background, tile, stipple, tile-stipple-x-origin,
|
|
tile-stipple-y-origin, dash-offset, and dash-list.
|
|
.LP
|
|
.ZN XDrawLine ,
|
|
.ZN XDrawLines ,
|
|
and
|
|
.ZN XDrawSegments
|
|
can generate
|
|
.ZN BadDrawable ,
|
|
.ZN BadGC ,
|
|
and
|
|
.ZN BadMatch
|
|
errors.
|
|
.ZN XDrawLines
|
|
can also generate a
|
|
.ZN BadValue
|
|
error.
|
|
.SH STRUCTURES
|
|
The
|
|
.ZN XSegment
|
|
structure contains:
|
|
.LP
|
|
.Ds 0
|
|
.TA .5i
|
|
.ta .5i
|
|
typedef struct {
|
|
short x1, y1, x2, y2;
|
|
} XSegment;
|
|
.De
|
|
.LP
|
|
All x and y members are signed integers.
|
|
The width and height members are 16-bit unsigned integers.
|
|
You should be careful not to generate coordinates and sizes
|
|
out of the 16-bit ranges, because the protocol only has 16-bit fields
|
|
for these values.
|
|
.SH DIAGNOSTICS
|
|
.\" $Header: baddrawable.e,v 1.1 87/09/04 08:22:59 mento Exp $
|
|
.TP 1i
|
|
.ZN BadDrawable
|
|
A value for a Drawable argument does not name a defined Window or Pixmap.
|
|
.\" $Header: badgc.e,v 1.1 87/09/04 08:23:02 mento Locked $
|
|
.TP 1i
|
|
.ZN BadGC
|
|
A value for a GContext argument does not name a defined GContext.
|
|
.\" $Header: badmatch1.e,v 1.3 87/09/09 18:18:54 mento Exp $
|
|
.TP 1i
|
|
.ZN BadMatch
|
|
An
|
|
.ZN InputOnly
|
|
window is used as a Drawable.
|
|
.\" $Header: badmatch2.e,v 1.3 87/09/11 11:53:42 mento Exp $
|
|
.TP 1i
|
|
.ZN 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.
|
|
.\" $Header: badvalue.e,v 1.1 87/09/04 08:23:19 mento Exp $
|
|
.TP 1i
|
|
.ZN 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.
|
|
.SH "SEE ALSO"
|
|
XDrawArc(3X11),
|
|
XDrawPoint(3X11),
|
|
XDrawRectangle(3X11)
|
|
.br
|
|
\fI\*(xL\fP
|