255 lines
6.3 KiB
Plaintext
255 lines
6.3 KiB
Plaintext
.ds xT X Toolkit Intrinsics \- C Language Interface
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.ds xW Athena X Widgets \- C Language X Toolkit Interface
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.ds xL Xlib \- C Language X Interface
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.ds xC Inter-Client Communication Conventions Manual
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.ny0
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.TH XSetLineAttributes 3X11 "Release 5" "X Version 11" "XLIB FUNCTIONS"
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.SH NAME
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XSetLineAttributes, XSetDashes \- GC convenience routines
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.SH SYNTAX
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.\" $Header: XSetLnStle.f,v 1.1 88/02/26 10:03:22 mento Exp $
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XSetLineAttributes\^(\^\fIdisplay\fP, \fIgc\fP\^, \fIline_width\fP\^, \fIline_style\fP\^, \fIcap_style\fP\^, \fIjoin_style\fP\^)
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.br
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Display *\fIdisplay\fP\^;
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.br
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GC \fIgc\fP\^;
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.br
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unsigned int \fIline_width\fP\^;
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.br
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int \fIline_style\fP\^;
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.br
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int \fIcap_style\fP\^;
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.br
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int \fIjoin_style\fP\^;
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.LP
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.\" $Header: XSetDashes.f,v 1.1 88/02/26 10:03:06 mento Exp $
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XSetDashes\^(\^\fIdisplay\fP, \fIgc\fP\^, \fIdash_offset\fP\^, \fIdash_list\fP\^, \fIn\fP\^)
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.br
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Display *\fIdisplay\fP\^;
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.br
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GC \fIgc\fP\^;
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.br
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int \fIdash_offset\fP\^;
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.br
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char \fIdash_list\fP[]\^;
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.br
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int \fIn\fP\^;
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.SH ARGUMENTS
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.\" $Header: cap_style.a,v 1.2 88/05/09 11:44:16 mento Exp $
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.IP \fIcap_style\fP 1i
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Specifies the line-style and cap-style you want to set for the specified GC.
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You can pass
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.ZN CapNotLast ,
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.ZN CapButt ,
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.ZN CapRound ,
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or
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.ZN CapProjecting .
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.\" $Header: dashlist.a,v 1.2 88/05/09 11:47:52 mento Exp $
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.IP \fIdash_list\fP 1i
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Specifies the dash-list for the dashed line-style
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you want to set for the specified GC.
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.\" $Header: dashoff.a,v 1.2 88/05/09 11:46:56 mento Exp $
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.IP \fIdash_offset\fP 1i
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Specifies the phase of the pattern for the dashed line-style you want to set
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for the specified GC.
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.\" $Header: display.a,v 1.1 88/02/26 10:26:29 mento Exp $
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.IP \fIdisplay\fP 1i
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Specifies the connection to the X server.
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.\" $Header: gc.a,v 1.2 88/05/09 11:20:34 mento Exp $
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.IP \fIgc\fP 1i
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Specifies the GC.
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.\" $Header: join_style.a,v 1.3 88/05/09 14:18:01 mento Exp $
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.IP \fIjoin_style\fP 1i
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Specifies the line join-style you want to set for the specified GC.
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You can pass
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.ZN JoinMiter ,
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.ZN JoinRound ,
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or
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.ZN JoinBevel .
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.\" $Header: line_style.a,v 1.2 88/05/09 11:43:02 mento Exp $
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.IP \fIline_style\fP 1i
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Specifies the line-style you want to set for the specified GC.
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You can pass
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.ZN LineSolid ,
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.ZN LineOnOffDash ,
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or
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.ZN LineDoubleDash .
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.\" $Header: line_width.a,v 1.2 88/05/09 11:40:12 mento Exp $
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.IP \fIline_width\fP 1i
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Specifies the line-width you want to set for the specified GC.
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.\" $Header: n3.a,v 1.2 88/05/11 11:38:49 mento Exp $
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.IP \fIn\fP 1i
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Specifies the number of elements in dash_list.
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.SH DESCRIPTION
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.\" $Header: XSetLnStle.d,v 1.2 88/06/11 07:53:24 mento Exp $
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The
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.ZN XSetLineAttributes
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function sets the line drawing components in the specified GC.
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.LP
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.ZN XSetLineAttributes
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can generate
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.ZN BadAlloc ,
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.ZN BadGC ,
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and
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.ZN BadValue
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errors.
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.LP
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.\" $Header: XSetDashes.d,v 1.4 88/08/18 08:11:08 mento Exp $
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The
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.ZN XSetDashes
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function sets the dash-offset and dash-list attributes for dashed line styles
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in the specified GC.
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There must be at least one element in the specified dash_list,
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or a
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.ZN BadValue
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error results.
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The initial and alternating elements (second, fourth, and so on)
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of the dash_list are the even dashes, and
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the others are the odd dashes.
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Each element specifies a dash length in pixels.
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All of the elements must be nonzero,
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or a
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.ZN BadValue
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error results.
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Specifying an odd-length list is equivalent to specifying the same list
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concatenated with itself to produce an even-length list.
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.LP
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The dash-offset defines the phase of the pattern,
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specifying how many pixels into the dash-list the pattern
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should actually begin in any single graphics request.
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Dashing is continuous through path elements combined with a join-style
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but is reset to the dash-offset between each sequence of joined lines.
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.LP
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The unit of measure for dashes is the same for the ordinary coordinate system.
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Ideally, a dash length is measured along the slope of the line, but implementations
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are only required to match this ideal for horizontal and vertical lines.
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Failing the ideal semantics, it is suggested that the length be measured along the
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major axis of the line.
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The major axis is defined as the x axis for lines drawn at an angle of between
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\-45 and +45 degrees or between 135 and 225 degrees from the x axis.
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For all other lines, the major axis is the y axis.
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.LP
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.ZN XSetDashes
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can generate
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.ZN BadAlloc ,
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.ZN BadGC ,
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and
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.ZN BadValue
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errors.
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.SH DIAGNOSTICS
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.\" $Header: badalloc.e,v 1.3 87/09/11 11:17:14 mento Exp $
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.TP 1i
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.ZN BadAlloc
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The server failed to allocate the requested resource or server memory.
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.\" $Header: badgc.e,v 1.1 87/09/04 08:23:02 mento Locked $
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.TP 1i
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.ZN BadGC
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A value for a GContext argument does not name a defined GContext.
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.\" $Header: badvalue.e,v 1.1 87/09/04 08:23:19 mento Exp $
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.TP 1i
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.ZN BadValue
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Some numeric value falls outside the range of values accepted by the request.
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Unless a specific range is specified for an argument, the full range defined
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by the argument's type is accepted. Any argument defined as a set of
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alternatives can generate this error.
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.SH "SEE ALSO"
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XCreateGC(3X11),
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XQueryBestSize(3X11),
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XSetArcMode(3X11),
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XSetClipOrigin(3X11),
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XSetFillStyle(3X11),
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XSetFont(3X11),
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XSetState(3X11),
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XSetTile(3X11)
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.br
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\fI\*(xL\fP
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