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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
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Checked in the following released items:
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+.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1994, 1996 X Consortium
+.\" Copyright \(co 2000 The XFree86 Project, Inc.
+.\"
+.\" Permission is hereby granted, free of charge, to any person obtaining
+.\" a copy of this software and associated documentation files (the
+.\" "Software"), to deal in the Software without restriction, including
+.\" without limitation the rights to use, copy, modify, merge, publish,
+.\" distribute, sublicense, and/or sell copies of the Software, and to
+.\" permit persons to whom the Software is furnished to do so, subject to
+.\" the following conditions:
+.\"
+.\" The above copyright notice and this permission notice shall be included
+.\" in all copies or substantial portions of the Software.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+.\" IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
+.\" OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+.\" ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+.\" OTHER DEALINGS IN THE SOFTWARE.
+.\"
+.\" Except as contained in this notice, the name of the X Consortium shall
+.\" not be used in advertising or otherwise to promote the sale, use or
+.\" other dealings in this Software without prior written authorization
+.\" from the X Consortium.
+.\"
+.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991 by
+.\" Digital Equipment Corporation
+.\"
+.\" Portions Copyright \(co 1990, 1991 by
+.\" Tektronix, Inc.
+.\"
+.\" Permission to use, copy, modify and distribute this documentation for
+.\" any purpose and without fee is hereby granted, provided that the above
+.\" copyright notice appears in all copies and that both that copyright notice
+.\" and this permission notice appear in all copies, and that the names of
+.\" Digital and Tektronix not be used in in advertising or publicity pertaining
+.\" to this documentation without specific, written prior permission.
+.\" Digital and Tektronix makes no representations about the suitability
+.\" of this documentation for any purpose.
+.\" It is provided ``as is'' without express or implied warranty.
+.\"
+.\" $XFree86: xc/doc/man/X11/XmbTExt.man,v 1.4 2001/01/27 18:20:08 dawes Exp $
+.\"
+.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 hN
+.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 XmbTextExtents __libmansuffix__ __xorgversion__ "XLIB FUNCTIONS"
+.SH NAME
+XmbTextExtents, XwcTextExtents, Xutf8TextExtents \- compute text extents
+.SH SYNTAX
+.HP
+int XmbTextExtents\^(\^XFontSet \fIfont_set\fP\^, char *\fIstring\fP\^, int
+\fInum_bytes\fP\^, XRectangle *\fIoverall_ink_return\fP\^, XRectangle
+*\fIoverall_logical_return\fP\^);
+.HP
+int XwcTextExtents\^(\^XFontSet \fIfont_set\fP\^, wchar_t *\fIstring\fP\^, int
+\fInum_wchars\fP\^, XRectangle *\fIoverall_ink_return\fP\^, XRectangle
+*\fIoverall_logical_return\fP\^);
+.HP
+int Xutf8TextExtents\^(\^XFontSet \fIfont_set\fP\^, char *\fIstring\fP\^, int
+\fInum_bytes\fP\^, XRectangle *\fIoverall_ink_return\fP\^, XRectangle
+*\fIoverall_logical_return\fP\^);
+.SH ARGUMENTS
+.IP \fIfont_set\fP 1i
+Specifies the font set.
+.IP \fInum_bytes\fP 1i
+Specifies the number of bytes in the string argument.
+.IP \fInum_wchars\fP 1i
+Specifies the number of characters in the string argument.
+.ds Ov dimensions
+.IP \fIoverall_ink_return\fP 1i
+Returns the overall ink \*(Ov.
+.IP \fIoverall_logical_return\fP 1i
+Returns the overall logical \*(Ov.
+.IP \fIstring\fP 1i
+Specifies the character string.
+.SH DESCRIPTION
+The
+.ZN XmbTextExtents ,
+.ZN XwcTextExtents
+and
+.ZN Xutf8TextExtents
+functions set the components of the specified overall_ink_return and
+overall_logical_return
+arguments to the overall bounding box of the string's image
+and a logical bounding box for spacing purposes, respectively.
+They return the value returned by
+.ZN XmbTextEscapement ,
+.ZN XwcTextEscapement
+or
+.ZN Xutf8TextEscapement .
+These metrics are relative to the drawing origin of the string,
+using the fonts loaded for the specified font set.
+.LP
+If the overall_ink_return argument is non-NULL,
+it is set to the bounding box of the string's character ink.
+The overall_ink_return for a nondescending, horizontally drawn
+Latin character is conventionally entirely above the baseline;
+that is, overall_ink_return.height <= \-overall_ink_return.y.
+The overall_ink_return for a nonkerned character
+is entirely at, and to the right of, the origin;
+that is, overall_ink_return.x >= 0.
+A character consisting of a single pixel at the origin would set
+overall_ink_return fields y = 0, x = 0, width = 1, and height = 1.
+.LP
+If the overall_logical_return argument is non-NULL,
+it is set to the bounding box that provides minimum spacing
+to other graphical features for the string.
+Other graphical features, for example, a border surrounding the text,
+should not intersect this rectangle.
+.LP
+When the
+.ZN XFontSet
+has missing charsets,
+metrics for each unavailable character are taken
+from the default string returned by
+.ZN XCreateFontSet
+so that the metrics represent the text as it will actually be drawn.
+The behavior for an invalid codepoint is undefined.
+.LP
+The function
+.ZN Xutf8TextExtents
+is an extension introduced by The XFree86 Project, Inc. in their 4.0.2
+release. Its presence is
+indicated by the macro
+.ZN X_HAVE_UTF8_STRING .
+.SH "SEE ALSO"
+XmbTextEscapement(3X11),
+XmbTextPerCharExtents(3X11)
+\fI\*(xL\fP