[OpenSPARC-T2-DV] / tools / src / nas,5.n2.os.2 / lib / python / man / man3 / Tk_GetMMFromObj.3

'\"
'\" Copyright (c) 1990 The Regents of the University of California.
'\" Copyright (c) 1994-1998 Sun Microsystems, Inc.
'\"
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\" 
'\" RCS: @(#) $Id: GetPixels.3,v 1.4 2002/01/25 21:09:36 dgp Exp $
'\" 
'\" The definitions below are for supplemental macros used in Tcl/Tk
'\" manual entries.
'\"
'\" .AP type name in/out ?indent?
'\"	Start paragraph describing an argument to a library procedure.
'\"	type is type of argument (int, etc.), in/out is either "in", "out",
'\"	or "in/out" to describe whether procedure reads or modifies arg,
'\"	and indent is equivalent to second arg of .IP (shouldn't ever be
'\"	needed;  use .AS below instead)
'\"
'\" .AS ?type? ?name?
'\"	Give maximum sizes of arguments for setting tab stops.  Type and
'\"	name are examples of largest possible arguments that will be passed
'\"	to .AP later.  If args are omitted, default tab stops are used.
'\"
'\" .BS
'\"	Start box enclosure.  From here until next .BE, everything will be
'\"	enclosed in one large box.
'\"
'\" .BE
'\"	End of box enclosure.
'\"
'\" .CS
'\"	Begin code excerpt.
'\"
'\" .CE
'\"	End code excerpt.
'\"
'\" .VS ?version? ?br?
'\"	Begin vertical sidebar, for use in marking newly-changed parts
'\"	of man pages.  The first argument is ignored and used for recording
'\"	the version when the .VS was added, so that the sidebars can be
'\"	found and removed when they reach a certain age.  If another argument
'\"	is present, then a line break is forced before starting the sidebar.
'\"
'\" .VE
'\"	End of vertical sidebar.
'\"
'\" .DS
'\"	Begin an indented unfilled display.
'\"
'\" .DE
'\"	End of indented unfilled display.
'\"
'\" .SO
'\"	Start of list of standard options for a Tk widget.  The
'\"	options follow on successive lines, in four columns separated
'\"	by tabs.
'\"
'\" .SE
'\"	End of list of standard options for a Tk widget.
'\"
'\" .OP cmdName dbName dbClass
'\"	Start of description of a specific option.  cmdName gives the
'\"	option's name as specified in the class command, dbName gives
'\"	the option's name in the option database, and dbClass gives
'\"	the option's class in the option database.
'\"
'\" .UL arg1 arg2
'\"	Print arg1 underlined, then print arg2 normally.
'\"
'\" RCS: @(#) $Id: man.macros,v 1.4 2000/08/25 06:18:32 ericm Exp $
'\"
'\"	# Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
.if t .wh -1.3i ^B
.nr ^l \n(.l
.ad b
'\"	# Start an argument description
.de AP
.ie !"\\$4"" .TP \\$4
.el \{\
.   ie !"\\$2"" .TP \\n()Cu
.   el          .TP 15
.\}
.ta \\n()Au \\n()Bu
.ie !"\\$3"" \{\
\&\\$1	\\fI\\$2\\fP	(\\$3)
.\".b
.\}
.el \{\
.br
.ie !"\\$2"" \{\
\&\\$1	\\fI\\$2\\fP
.\}
.el \{\
\&\\fI\\$1\\fP
.\}
.\}
..
'\"	# define tabbing values for .AP
.de AS
.nr )A 10n
.if !"\\$1"" .nr )A \\w'\\$1'u+3n
.nr )B \\n()Au+15n
.\"
.if !"\\$2"" .nr )B \\w'\\$2'u+\\n()Au+3n
.nr )C \\n()Bu+\\w'(in/out)'u+2n
..
.AS Tcl_Interp Tcl_CreateInterp in/out
'\"	# BS - start boxed text
'\"	# ^y = starting y location
'\"	# ^b = 1
.de BS
.br
.mk ^y
.nr ^b 1u
.if n .nf
.if n .ti 0
.if n \l'\\n(.lu\(ul'
.if n .fi
..
'\"	# BE - end boxed text (draw box now)
.de BE
.nf
.ti 0
.mk ^t
.ie n \l'\\n(^lu\(ul'
.el \{\
.\"	Draw four-sided box normally, but don't draw top of
.\"	box if the box started on an earlier page.
.ie !\\n(^b-1 \{\
\h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul'
.\}
.el \}\
\h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul'
.\}
.\}
.fi
.br
.nr ^b 0
..
'\"	# VS - start vertical sidebar
'\"	# ^Y = starting y location
'\"	# ^v = 1 (for troff;  for nroff this doesn't matter)
.de VS
.if !"\\$2"" .br
.mk ^Y
.ie n 'mc \s12\(br\s0
.el .nr ^v 1u
..
'\"	# VE - end of vertical sidebar
.de VE
.ie n 'mc
.el \{\
.ev 2
.nf
.ti 0
.mk ^t
\h'|\\n(^lu+3n'\L'|\\n(^Yu-1v\(bv'\v'\\n(^tu+1v-\\n(^Yu'\h'-|\\n(^lu+3n'
.sp -1
.fi
.ev
.\}
.nr ^v 0
..
'\"	# Special macro to handle page bottom:  finish off current
'\"	# box/sidebar if in box/sidebar mode, then invoked standard
'\"	# page bottom macro.
.de ^B
.ev 2
'ti 0
'nf
.mk ^t
.if \\n(^b \{\
.\"	Draw three-sided box if this is the box's first page,
.\"	draw two sides but no top otherwise.
.ie !\\n(^b-1 \h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c
.el \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c
.\}
.if \\n(^v \{\
.nr ^x \\n(^tu+1v-\\n(^Yu
\kx\h'-\\nxu'\h'|\\n(^lu+3n'\ky\L'-\\n(^xu'\v'\\n(^xu'\h'|0u'\c
.\}
.bp
'fi
.ev
.if \\n(^b \{\
.mk ^y
.nr ^b 2
.\}
.if \\n(^v \{\
.mk ^Y
.\}
..
'\"	# DS - begin display
.de DS
.RS
.nf
.sp
..
'\"	# DE - end display
.de DE
.fi
.RE
.sp
..
'\"	# SO - start of list of standard options
.de SO
.SH "STANDARD OPTIONS"
.LP
.nf
.ta 5.5c 11c
.ft B
..
'\"	# SE - end of list of standard options
.de SE
.fi
.ft R
.LP
See the \\fBoptions\\fR manual entry for details on the standard options.
..
'\"	# OP - start of full description for a single option
.de OP
.LP
.nf
.ta 4c
Command-Line Name:	\\fB\\$1\\fR
Database Name:	\\fB\\$2\\fR
Database Class:	\\fB\\$3\\fR
.fi
.IP
..
'\"	# CS - begin code excerpt
.de CS
.RS
.nf
.ta .25i .5i .75i 1i
..
'\"	# CE - end code excerpt
.de CE
.fi
.RE
..
.de UL
\\$1\l'|0\(ul'\\$2
..
.TH Tk_GetPixelsFromObj 3 8.1 Tk "Tk Library Procedures"
.BS
.SH NAME
Tk_GetPixelsFromObj, Tk_GetPixels, Tk_GetMMFromObj, Tk_GetScreenMM \- translate between strings and screen units
.SH SYNOPSIS
.nf
\fB#include <tk.h>\fR
.sp
.VS 8.1
int
\fBTk_GetPixelsFromObj(\fIinterp, tkwin, objPtr, intPtr\fB)\fR
.VE
.sp
int
\fBTk_GetPixels(\fIinterp, tkwin, string, intPtr\fB)\fR
.sp
.VS 8.1
int
\fBTk_GetMMFromObj(\fIinterp, tkwin, objPtr, doublePtr\fB)\fR
.VE
.sp
int
\fBTk_GetScreenMM(\fIinterp, tkwin, string, doublePtr\fB)\fR
.SH ARGUMENTS
.AS "Tcl_Interp" *joinPtr
.AP Tcl_Interp *interp in
Interpreter to use for error reporting.
.AP Tk_Window tkwin in
Window whose screen geometry determines the conversion between absolute
units and pixels.
.VS 8.1 br
.AP Tcl_Obj *objPtr in/out
String value specifies a distance on the screen;
internal rep will be modified to cache converted distance.
.AP "CONST char" *string in
Same as \fIobjPtr\fR except specification of distance is passed as
a string.
.VE
.AP int *intPtr out
Pointer to location in which to store converted distance in pixels.
.AP double *doublePtr out
Pointer to location in which to store converted distance in millimeters.
.BE

.SH DESCRIPTION
.PP
These procedures take as argument a specification of distance on
.VS 8.1
the screen (\fIobjPtr\fR or \fIstring\fR) and compute the
.VE
corresponding distance either in integer pixels or floating-point millimeters.
In either case,
.VS 8.1
\fIobjPtr\fR or \fIstring\fR
.VE
specifies a screen distance as a
floating-point number followed by one of the following characters
that indicates units:
.TP
<none>
The number specifies a distance in pixels.
.TP
\fBc\fR
The number specifies a distance in centimeters on the screen.
.TP
\fBi\fR
The number specifies a distance in inches on the screen.
.TP
\fBm\fR
The number specifies a distance in millimeters on the screen.
.TP
\fBp\fR
The number specifies a distance in printer's points (1/72 inch)
on the screen.
.PP
.VS 8.1
\fBTk_GetPixelsFromObj\fR converts the value of \fIobjPtr\fR to the
nearest even number of pixels and stores that value at \fI*intPtr\fR.
It returns \fBTCL_OK\fR under normal circumstances.
If an error occurs (e.g. \fIobjPtr\fR contains a number followed
by a character that isn't one of the ones above) then
\fBTCL_ERROR\fR is returned and an error message is left
in \fIinterp\fR's result if \fIinterp\fR isn't NULL.
\fBTk_GetPixelsFromObj\fR caches information about the return
value in \fIobjPtr\fR, which speeds up future calls to
\fBTk_GetPixelsFromObj\fR with the same \fIobjPtr\fR.
.PP
\fBTk_GetPixels\fR is identical to \fBTk_GetPixelsFromObj\fR except
that the screen distance is specified with a string instead
of an object.  This prevents \fBTk_GetPixels\fR from caching the
return value, so \fBTk_GetAnchor\fR is less efficient than
\fBTk_GetPixelsFromObj\fR.
.PP
\fBTk_GetMMFromObj\fR and \fBTk_GetScreenMM\fR are similar to
\fBTk_GetPixelsFromObj\fR and \fBTk_GetPixels\fR (respectively) except
that they convert the screen distance to millimeters and
store a double-precision floating-point result at \fI*doublePtr\fR.
.VE

.SH KEYWORDS
centimeters, convert, inches, millimeters, pixels, points, screen units
Commit	Line	Data
86530b38 AT	1	'\"
	2	'\" Copyright (c) 1990 The Regents of the University of California.
	3	'\" Copyright (c) 1994-1998 Sun Microsystems, Inc.
	4	'\"
	5	'\" See the file "license.terms" for information on usage and redistribution
	6	'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
	7	'\"
	8	'\" RCS: @(#) $Id: GetPixels.3,v 1.4 2002/01/25 21:09:36 dgp Exp $
	9	'\"
	10	'\" The definitions below are for supplemental macros used in Tcl/Tk
	11	'\" manual entries.
	12	'\"
	13	'\" .AP type name in/out ?indent?
	14	'\" Start paragraph describing an argument to a library procedure.
	15	'\" type is type of argument (int, etc.), in/out is either "in", "out",
	16	'\" or "in/out" to describe whether procedure reads or modifies arg,
	17	'\" and indent is equivalent to second arg of .IP (shouldn't ever be
	18	'\" needed; use .AS below instead)
	19	'\"
	20	'\" .AS ?type? ?name?
	21	'\" Give maximum sizes of arguments for setting tab stops. Type and
	22	'\" name are examples of largest possible arguments that will be passed
	23	'\" to .AP later. If args are omitted, default tab stops are used.
	24	'\"
	25	'\" .BS
	26	'\" Start box enclosure. From here until next .BE, everything will be
	27	'\" enclosed in one large box.
	28	'\"
	29	'\" .BE
	30	'\" End of box enclosure.
	31	'\"
	32	'\" .CS
	33	'\" Begin code excerpt.
	34	'\"
	35	'\" .CE
	36	'\" End code excerpt.
	37	'\"
	38	'\" .VS ?version? ?br?
	39	'\" Begin vertical sidebar, for use in marking newly-changed parts
	40	'\" of man pages. The first argument is ignored and used for recording
	41	'\" the version when the .VS was added, so that the sidebars can be
	42	'\" found and removed when they reach a certain age. If another argument
	43	'\" is present, then a line break is forced before starting the sidebar.
	44	'\"
	45	'\" .VE
	46	'\" End of vertical sidebar.
	47	'\"
	48	'\" .DS
	49	'\" Begin an indented unfilled display.
	50	'\"
	51	'\" .DE
	52	'\" End of indented unfilled display.
	53	'\"
	54	'\" .SO
	55	'\" Start of list of standard options for a Tk widget. The
	56	'\" options follow on successive lines, in four columns separated
	57	'\" by tabs.
	58	'\"
	59	'\" .SE
	60	'\" End of list of standard options for a Tk widget.
	61	'\"
	62	'\" .OP cmdName dbName dbClass
	63	'\" Start of description of a specific option. cmdName gives the
	64	'\" option's name as specified in the class command, dbName gives
65	'\" the option's name in the option database, and dbClass gives
66	'\" the option's class in the option database.
67	'\"
68	'\" .UL arg1 arg2
69	'\" Print arg1 underlined, then print arg2 normally.
70	'\"
71	'\" RCS: @(#) $Id: man.macros,v 1.4 2000/08/25 06:18:32 ericm Exp $
72	'\"
73	'\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
74	.if t .wh -1.3i ^B
75	.nr ^l \n(.l
76	.ad b
77	'\" # Start an argument description
78	.de AP
79	.ie !"\\$4"" .TP \\$4
80	.el \{\
81	. ie !"\\$2"" .TP \\n()Cu
82	. el .TP 15
83	.\}
84	.ta \\n()Au \\n()Bu
85	.ie !"\\$3"" \{\
86	\&\\$1 \\fI\\$2\\fP (\\$3)
87	.\".b
88	.\}
89	.el \{\
90	.br
91	.ie !"\\$2"" \{\
92	\&\\$1 \\fI\\$2\\fP
93	.\}
94	.el \{\
95	\&\\fI\\$1\\fP
96	.\}
97	.\}
98	..
99	'\" # define tabbing values for .AP
100	.de AS
101	.nr )A 10n
102	.if !"\\$1"" .nr )A \\w'\\$1'u+3n
103	.nr )B \\n()Au+15n
104	.\"
105	.if !"\\$2"" .nr )B \\w'\\$2'u+\\n()Au+3n
106	.nr )C \\n()Bu+\\w'(in/out)'u+2n
107	..
108	.AS Tcl_Interp Tcl_CreateInterp in/out
109	'\" # BS - start boxed text
110	'\" # ^y = starting y location
111	'\" # ^b = 1
112	.de BS
113	.br
114	.mk ^y
115	.nr ^b 1u
116	.if n .nf
117	.if n .ti 0
118	.if n \l'\\n(.lu\(ul'
119	.if n .fi
120	..
121	'\" # BE - end boxed text (draw box now)
122	.de BE
123	.nf
124	.ti 0
125	.mk ^t
126	.ie n \l'\\n(^lu\(ul'
127	.el \{\
128	.\" Draw four-sided box normally, but don't draw top of
129	.\" box if the box started on an earlier page.
130	.ie !\\n(^b-1 \{\
131	\h'-1.5n'\L'\|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\l'\|0u-1.5n\(ul'
132	.\}
133	.el \}\
134	\h'-1.5n'\L'\|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'\|0u-1.5n\(ul'
135	.\}
136	.\}
137	.fi
138	.br
139	.nr ^b 0
140	..
141	'\" # VS - start vertical sidebar
142	'\" # ^Y = starting y location
143	'\" # ^v = 1 (for troff; for nroff this doesn't matter)
144	.de VS
145	.if !"\\$2"" .br
146	.mk ^Y
147	.ie n 'mc \s12\(br\s0
148	.el .nr ^v 1u
149	..
150	'\" # VE - end of vertical sidebar
151	.de VE
152	.ie n 'mc
153	.el \{\
154	.ev 2
155	.nf
156	.ti 0
157	.mk ^t
158	\h'\|\\n(^lu+3n'\L'\|\\n(^Yu-1v\(bv'\v'\\n(^tu+1v-\\n(^Yu'\h'-\|\\n(^lu+3n'
159	.sp -1
160	.fi
161	.ev
162	.\}
163	.nr ^v 0
164	..
165	'\" # Special macro to handle page bottom: finish off current
166	'\" # box/sidebar if in box/sidebar mode, then invoked standard
167	'\" # page bottom macro.
168	.de ^B
169	.ev 2
170	'ti 0
171	'nf
172	.mk ^t
173	.if \\n(^b \{\
174	.\" Draw three-sided box if this is the box's first page,
175	.\" draw two sides but no top otherwise.
176	.ie !\\n(^b-1 \h'-1.5n'\L'\|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\h'\|0u'\c
177	.el \h'-1.5n'\L'\|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\h'\|0u'\c
178	.\}
179	.if \\n(^v \{\
180	.nr ^x \\n(^tu+1v-\\n(^Yu
181	\kx\h'-\\nxu'\h'\|\\n(^lu+3n'\ky\L'-\\n(^xu'\v'\\n(^xu'\h'\|0u'\c
182	.\}
183	.bp
184	'fi
185	.ev
186	.if \\n(^b \{\
187	.mk ^y
188	.nr ^b 2
189	.\}
190	.if \\n(^v \{\
191	.mk ^Y
192	.\}
193	..
194	'\" # DS - begin display
195	.de DS
196	.RS
197	.nf
198	.sp
199	..
200	'\" # DE - end display
201	.de DE
202	.fi
203	.RE
204	.sp
205	..
206	'\" # SO - start of list of standard options
207	.de SO
208	.SH "STANDARD OPTIONS"
209	.LP
210	.nf
211	.ta 5.5c 11c
212	.ft B
213	..
214	'\" # SE - end of list of standard options
215	.de SE
216	.fi
217	.ft R
218	.LP
219	See the \\fBoptions\\fR manual entry for details on the standard options.
220	..
221	'\" # OP - start of full description for a single option
222	.de OP
223	.LP
224	.nf
225	.ta 4c
226	Command-Line Name: \\fB\\$1\\fR
227	Database Name: \\fB\\$2\\fR
228	Database Class: \\fB\\$3\\fR
229	.fi
230	.IP
231	..
232	'\" # CS - begin code excerpt
233	.de CS
234	.RS
235	.nf
236	.ta .25i .5i .75i 1i
237	..
238	'\" # CE - end code excerpt
239	.de CE
240	.fi
241	.RE
242	..
243	.de UL
244	\\$1\l'\|0\(ul'\\$2
245	..
246	.TH Tk_GetPixelsFromObj 3 8.1 Tk "Tk Library Procedures"
247	.BS
248	.SH NAME
249	Tk_GetPixelsFromObj, Tk_GetPixels, Tk_GetMMFromObj, Tk_GetScreenMM \- translate between strings and screen units
250	.SH SYNOPSIS
251	.nf
252	\fB#include <tk.h>\fR
253	.sp
254	.VS 8.1
255	int
256	\fBTk_GetPixelsFromObj(\fIinterp, tkwin, objPtr, intPtr\fB)\fR
257	.VE
258	.sp
259	int
260	\fBTk_GetPixels(\fIinterp, tkwin, string, intPtr\fB)\fR
261	.sp
262	.VS 8.1
263	int
264	\fBTk_GetMMFromObj(\fIinterp, tkwin, objPtr, doublePtr\fB)\fR
265	.VE
266	.sp
267	int
268	\fBTk_GetScreenMM(\fIinterp, tkwin, string, doublePtr\fB)\fR
269	.SH ARGUMENTS
270	.AS "Tcl_Interp" *joinPtr
271	.AP Tcl_Interp *interp in
272	Interpreter to use for error reporting.
273	.AP Tk_Window tkwin in
274	Window whose screen geometry determines the conversion between absolute
275	units and pixels.
276	.VS 8.1 br
277	.AP Tcl_Obj *objPtr in/out
278	String value specifies a distance on the screen;
279	internal rep will be modified to cache converted distance.
280	.AP "CONST char" *string in
281	Same as \fIobjPtr\fR except specification of distance is passed as
282	a string.
283	.VE
284	.AP int *intPtr out
285	Pointer to location in which to store converted distance in pixels.
286	.AP double *doublePtr out
287	Pointer to location in which to store converted distance in millimeters.
288	.BE
289
290	.SH DESCRIPTION
291	.PP
292	These procedures take as argument a specification of distance on
293	.VS 8.1
294	the screen (\fIobjPtr\fR or \fIstring\fR) and compute the
295	.VE
296	corresponding distance either in integer pixels or floating-point millimeters.
297	In either case,
298	.VS 8.1
299	\fIobjPtr\fR or \fIstring\fR
300	.VE
301	specifies a screen distance as a
302	floating-point number followed by one of the following characters
303	that indicates units:
304	.TP
305	<none>
306	The number specifies a distance in pixels.
307	.TP
308	\fBc\fR
309	The number specifies a distance in centimeters on the screen.
310	.TP
311	\fBi\fR
312	The number specifies a distance in inches on the screen.
313	.TP
314	\fBm\fR
315	The number specifies a distance in millimeters on the screen.
316	.TP
317	\fBp\fR
318	The number specifies a distance in printer's points (1/72 inch)
319	on the screen.
320	.PP
321	.VS 8.1
322	\fBTk_GetPixelsFromObj\fR converts the value of \fIobjPtr\fR to the
323	nearest even number of pixels and stores that value at \fI*intPtr\fR.
324	It returns \fBTCL_OK\fR under normal circumstances.
325	If an error occurs (e.g. \fIobjPtr\fR contains a number followed
326	by a character that isn't one of the ones above) then
327	\fBTCL_ERROR\fR is returned and an error message is left
328	in \fIinterp\fR's result if \fIinterp\fR isn't NULL.
329	\fBTk_GetPixelsFromObj\fR caches information about the return
330	value in \fIobjPtr\fR, which speeds up future calls to
331	\fBTk_GetPixelsFromObj\fR with the same \fIobjPtr\fR.
332	.PP
333	\fBTk_GetPixels\fR is identical to \fBTk_GetPixelsFromObj\fR except
334	that the screen distance is specified with a string instead
335	of an object. This prevents \fBTk_GetPixels\fR from caching the
336	return value, so \fBTk_GetAnchor\fR is less efficient than
337	\fBTk_GetPixelsFromObj\fR.
338	.PP
339	\fBTk_GetMMFromObj\fR and \fBTk_GetScreenMM\fR are similar to
340	\fBTk_GetPixelsFromObj\fR and \fBTk_GetPixels\fR (respectively) except
341	that they convert the screen distance to millimeters and
342	store a double-precision floating-point result at \fI*doublePtr\fR.
343	.VE
344
345	.SH KEYWORDS
346	centimeters, convert, inches, millimeters, pixels, points, screen units