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1 | '\" |
2 | '\" Copyright (c) 1996 Sun Microsystems, Inc. | |
3 | '\" | |
4 | '\" See the file "license.terms" for information on usage and redistribution | |
5 | '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. | |
6 | '\" | |
7 | '\" RCS: @(#) $Id: font.n,v 1.3.8.1 2004/10/28 10:19:29 dkf Exp $ | |
8 | '\" | |
9 | '\" The definitions below are for supplemental macros used in Tcl/Tk | |
10 | '\" manual entries. | |
11 | '\" | |
12 | '\" .AP type name in/out ?indent? | |
13 | '\" Start paragraph describing an argument to a library procedure. | |
14 | '\" type is type of argument (int, etc.), in/out is either "in", "out", | |
15 | '\" or "in/out" to describe whether procedure reads or modifies arg, | |
16 | '\" and indent is equivalent to second arg of .IP (shouldn't ever be | |
17 | '\" needed; use .AS below instead) | |
18 | '\" | |
19 | '\" .AS ?type? ?name? | |
20 | '\" Give maximum sizes of arguments for setting tab stops. Type and | |
21 | '\" name are examples of largest possible arguments that will be passed | |
22 | '\" to .AP later. If args are omitted, default tab stops are used. | |
23 | '\" | |
24 | '\" .BS | |
25 | '\" Start box enclosure. From here until next .BE, everything will be | |
26 | '\" enclosed in one large box. | |
27 | '\" | |
28 | '\" .BE | |
29 | '\" End of box enclosure. | |
30 | '\" | |
31 | '\" .CS | |
32 | '\" Begin code excerpt. | |
33 | '\" | |
34 | '\" .CE | |
35 | '\" End code excerpt. | |
36 | '\" | |
37 | '\" .VS ?version? ?br? | |
38 | '\" Begin vertical sidebar, for use in marking newly-changed parts | |
39 | '\" of man pages. The first argument is ignored and used for recording | |
40 | '\" the version when the .VS was added, so that the sidebars can be | |
41 | '\" found and removed when they reach a certain age. If another argument | |
42 | '\" is present, then a line break is forced before starting the sidebar. | |
43 | '\" | |
44 | '\" .VE | |
45 | '\" End of vertical sidebar. | |
46 | '\" | |
47 | '\" .DS | |
48 | '\" Begin an indented unfilled display. | |
49 | '\" | |
50 | '\" .DE | |
51 | '\" End of indented unfilled display. | |
52 | '\" | |
53 | '\" .SO | |
54 | '\" Start of list of standard options for a Tk widget. The | |
55 | '\" options follow on successive lines, in four columns separated | |
56 | '\" by tabs. | |
57 | '\" | |
58 | '\" .SE | |
59 | '\" End of list of standard options for a Tk widget. | |
60 | '\" | |
61 | '\" .OP cmdName dbName dbClass | |
62 | '\" Start of description of a specific option. cmdName gives the | |
63 | '\" option's name as specified in the class command, dbName gives | |
64 | '\" the option's name in the option database, and dbClass gives | |
65 | '\" the option's class in the option database. | |
66 | '\" | |
67 | '\" .UL arg1 arg2 | |
68 | '\" Print arg1 underlined, then print arg2 normally. | |
69 | '\" | |
70 | '\" RCS: @(#) $Id: man.macros,v 1.4 2000/08/25 06:18:32 ericm Exp $ | |
71 | '\" | |
72 | '\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages. | |
73 | .if t .wh -1.3i ^B | |
74 | .nr ^l \n(.l | |
75 | .ad b | |
76 | '\" # Start an argument description | |
77 | .de AP | |
78 | .ie !"\\$4"" .TP \\$4 | |
79 | .el \{\ | |
80 | . ie !"\\$2"" .TP \\n()Cu | |
81 | . el .TP 15 | |
82 | .\} | |
83 | .ta \\n()Au \\n()Bu | |
84 | .ie !"\\$3"" \{\ | |
85 | \&\\$1 \\fI\\$2\\fP (\\$3) | |
86 | .\".b | |
87 | .\} | |
88 | .el \{\ | |
89 | .br | |
90 | .ie !"\\$2"" \{\ | |
91 | \&\\$1 \\fI\\$2\\fP | |
92 | .\} | |
93 | .el \{\ | |
94 | \&\\fI\\$1\\fP | |
95 | .\} | |
96 | .\} | |
97 | .. | |
98 | '\" # define tabbing values for .AP | |
99 | .de AS | |
100 | .nr )A 10n | |
101 | .if !"\\$1"" .nr )A \\w'\\$1'u+3n | |
102 | .nr )B \\n()Au+15n | |
103 | .\" | |
104 | .if !"\\$2"" .nr )B \\w'\\$2'u+\\n()Au+3n | |
105 | .nr )C \\n()Bu+\\w'(in/out)'u+2n | |
106 | .. | |
107 | .AS Tcl_Interp Tcl_CreateInterp in/out | |
108 | '\" # BS - start boxed text | |
109 | '\" # ^y = starting y location | |
110 | '\" # ^b = 1 | |
111 | .de BS | |
112 | .br | |
113 | .mk ^y | |
114 | .nr ^b 1u | |
115 | .if n .nf | |
116 | .if n .ti 0 | |
117 | .if n \l'\\n(.lu\(ul' | |
118 | .if n .fi | |
119 | .. | |
120 | '\" # BE - end boxed text (draw box now) | |
121 | .de BE | |
122 | .nf | |
123 | .ti 0 | |
124 | .mk ^t | |
125 | .ie n \l'\\n(^lu\(ul' | |
126 | .el \{\ | |
127 | .\" Draw four-sided box normally, but don't draw top of | |
128 | .\" box if the box started on an earlier page. | |
129 | .ie !\\n(^b-1 \{\ | |
130 | \h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul' | |
131 | .\} | |
132 | .el \}\ | |
133 | \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul' | |
134 | .\} | |
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136 | .fi | |
137 | .br | |
138 | .nr ^b 0 | |
139 | .. | |
140 | '\" # VS - start vertical sidebar | |
141 | '\" # ^Y = starting y location | |
142 | '\" # ^v = 1 (for troff; for nroff this doesn't matter) | |
143 | .de VS | |
144 | .if !"\\$2"" .br | |
145 | .mk ^Y | |
146 | .ie n 'mc \s12\(br\s0 | |
147 | .el .nr ^v 1u | |
148 | .. | |
149 | '\" # VE - end of vertical sidebar | |
150 | .de VE | |
151 | .ie n 'mc | |
152 | .el \{\ | |
153 | .ev 2 | |
154 | .nf | |
155 | .ti 0 | |
156 | .mk ^t | |
157 | \h'|\\n(^lu+3n'\L'|\\n(^Yu-1v\(bv'\v'\\n(^tu+1v-\\n(^Yu'\h'-|\\n(^lu+3n' | |
158 | .sp -1 | |
159 | .fi | |
160 | .ev | |
161 | .\} | |
162 | .nr ^v 0 | |
163 | .. | |
164 | '\" # Special macro to handle page bottom: finish off current | |
165 | '\" # box/sidebar if in box/sidebar mode, then invoked standard | |
166 | '\" # page bottom macro. | |
167 | .de ^B | |
168 | .ev 2 | |
169 | 'ti 0 | |
170 | 'nf | |
171 | .mk ^t | |
172 | .if \\n(^b \{\ | |
173 | .\" Draw three-sided box if this is the box's first page, | |
174 | .\" draw two sides but no top otherwise. | |
175 | .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 | |
176 | .el \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c | |
177 | .\} | |
178 | .if \\n(^v \{\ | |
179 | .nr ^x \\n(^tu+1v-\\n(^Yu | |
180 | \kx\h'-\\nxu'\h'|\\n(^lu+3n'\ky\L'-\\n(^xu'\v'\\n(^xu'\h'|0u'\c | |
181 | .\} | |
182 | .bp | |
183 | 'fi | |
184 | .ev | |
185 | .if \\n(^b \{\ | |
186 | .mk ^y | |
187 | .nr ^b 2 | |
188 | .\} | |
189 | .if \\n(^v \{\ | |
190 | .mk ^Y | |
191 | .\} | |
192 | .. | |
193 | '\" # DS - begin display | |
194 | .de DS | |
195 | .RS | |
196 | .nf | |
197 | .sp | |
198 | .. | |
199 | '\" # DE - end display | |
200 | .de DE | |
201 | .fi | |
202 | .RE | |
203 | .sp | |
204 | .. | |
205 | '\" # SO - start of list of standard options | |
206 | .de SO | |
207 | .SH "STANDARD OPTIONS" | |
208 | .LP | |
209 | .nf | |
210 | .ta 5.5c 11c | |
211 | .ft B | |
212 | .. | |
213 | '\" # SE - end of list of standard options | |
214 | .de SE | |
215 | .fi | |
216 | .ft R | |
217 | .LP | |
218 | See the \\fBoptions\\fR manual entry for details on the standard options. | |
219 | .. | |
220 | '\" # OP - start of full description for a single option | |
221 | .de OP | |
222 | .LP | |
223 | .nf | |
224 | .ta 4c | |
225 | Command-Line Name: \\fB\\$1\\fR | |
226 | Database Name: \\fB\\$2\\fR | |
227 | Database Class: \\fB\\$3\\fR | |
228 | .fi | |
229 | .IP | |
230 | .. | |
231 | '\" # CS - begin code excerpt | |
232 | .de CS | |
233 | .RS | |
234 | .nf | |
235 | .ta .25i .5i .75i 1i | |
236 | .. | |
237 | '\" # CE - end code excerpt | |
238 | .de CE | |
239 | .fi | |
240 | .RE | |
241 | .. | |
242 | .de UL | |
243 | \\$1\l'|0\(ul'\\$2 | |
244 | .. | |
245 | .TH font n 8.0 Tk "Tk Built-In Commands" | |
246 | .BS | |
247 | '\" Note: do not modify the .SH NAME line immediately below! | |
248 | .SH NAME | |
249 | font \- Create and inspect fonts. | |
250 | .SH SYNOPSIS | |
251 | \fBfont\fI option \fR?\fIarg arg ...\fR? | |
252 | .BE | |
253 | .SH DESCRIPTION | |
254 | .PP | |
255 | The \fBfont\fR command provides several facilities for dealing with | |
256 | fonts, such as defining named fonts and inspecting the actual attributes of | |
257 | a font. The command has several different forms, determined by the | |
258 | first argument. The following forms are currently supported: | |
259 | .TP | |
260 | \fBfont actual \fIfont\fR ?\fB\-displayof \fIwindow\fR? ?\fIoption\fR? | |
261 | . | |
262 | Returns information about the actual attributes that are obtained when | |
263 | \fIfont\fR is used on \fIwindow\fR's display; the actual attributes obtained | |
264 | may differ from the attributes requested due to platform-dependant | |
265 | limitations, such as the availability of font families and pointsizes. | |
266 | \fIfont\fR is a font description; see FONT DESCRIPTIONS below. If the | |
267 | \fIwindow\fR argument is omitted, it defaults to the main window. If | |
268 | \fIoption\fR is specified, returns the value of that attribute; if it is | |
269 | omitted, the return value is a list of all the attributes and their values. | |
270 | See FONT OPTIONS below for a list of the possible attributes. | |
271 | .TP | |
272 | \fBfont configure \fIfontname\fR ?\fIoption\fR? ?\fIvalue option value ...\fR? | |
273 | . | |
274 | Query or modify the desired attributes for the named font called | |
275 | \fIfontname\fR. If no \fIoption\fR is specified, returns a list describing | |
276 | all the options and their values for \fIfontname\fR. If a single \fIoption\fR | |
277 | is specified with no \fIvalue\fR, then returns the current value of that | |
278 | attribute. If one or more \fIoption\fR\-\fIvalue\fR pairs are specified, | |
279 | then the command modifies the given named font to have the given values; in | |
280 | this case, all widgets using that font will redisplay themselves using the | |
281 | new attributes for the font. See FONT OPTIONS below for a list of the | |
282 | possible attributes. | |
283 | .TP | |
284 | \fBfont create\fR ?\fIfontname\fR? ?\fIoption value ...\fR? | |
285 | . | |
286 | Creates a new named font and returns its name. \fIfontname\fR specifies the | |
287 | name for the font; if it is omitted, then Tk generates a new name of the | |
288 | form \fBfont\fIx\fR, where \fIx\fR is an integer. There may be any number | |
289 | of \fIoption\fR\-\fIvalue\fR pairs, which provide the desired attributes for | |
290 | the new named font. See FONT OPTIONS below for a list of the possible | |
291 | attributes. | |
292 | .TP | |
293 | \fBfont delete\fR \fIfontname\fR ?\fIfontname ...\fR? | |
294 | . | |
295 | Delete the specified named fonts. If there are widgets using the named font, | |
296 | the named font won't actually be deleted until all the instances are | |
297 | released. Those widgets will continue to display using the last known values | |
298 | for the named font. If a deleted named font is subsequently recreated with | |
299 | another call to \fBfont create\fR, the widgets will use the new named font | |
300 | and redisplay themselves using the new attributes of that font. | |
301 | .TP | |
302 | \fBfont families\fR ?\fB\-displayof \fIwindow\fR? | |
303 | . | |
304 | The return value is a list of the case-insensitive names of all font families | |
305 | that exist on \fIwindow\fR's display. If the \fIwindow\fR argument is | |
306 | omitted, it defaults to the main window. | |
307 | .TP | |
308 | \fBfont measure \fIfont\fR ?\fB\-displayof \fIwindow\fR? \fItext\fR | |
309 | . | |
310 | Measures the amount of space the string \fItext\fR would use in the given | |
311 | \fIfont\fR when displayed in \fIwindow\fR. \fIfont\fR is a font description; | |
312 | see FONT DESCRIPTIONS below. If the \fIwindow\fR argument is omitted, it | |
313 | defaults to the main window. The return value is the total width in pixels | |
314 | of \fItext\fR, not including the extra pixels used by highly exaggerated | |
315 | characters such as cursive ``f''. If the string contains newlines or tabs, | |
316 | those characters are not expanded or treated specially when measuring the | |
317 | string. | |
318 | .TP | |
319 | \fBfont metrics \fIfont\fR ?\fB\-displayof \fIwindow\fR? ?\fIoption\fR? | |
320 | . | |
321 | Returns information about the metrics (the font-specific data), for | |
322 | \fIfont\fR when it is used on \fIwindow\fR's display. \fIfont\fR is a font | |
323 | description; see FONT DESCRIPTIONS below. If the \fIwindow\fR argument is | |
324 | omitted, it defaults to the main window. If \fIoption\fR is specified, | |
325 | returns the value of that metric; if it is omitted, the return value is a | |
326 | list of all the metrics and their values. See FONT METRICS below for a list | |
327 | of the possible metrics. | |
328 | .TP | |
329 | \fBfont names\fR | |
330 | The return value is a list of all the named fonts that are currently defined. | |
331 | .SH "FONT DESCRIPTION" | |
332 | .PP | |
333 | The following formats are accepted as a font description anywhere | |
334 | \fIfont\fR is specified as an argument above; these same forms are also | |
335 | permitted when specifying the \fB\-font\fR option for widgets. | |
336 | .TP | |
337 | [1] \fIfontname\fR | |
338 | . | |
339 | The name of a named font, created using the \fBfont create\fR command. When | |
340 | a widget uses a named font, it is guaranteed that this will never cause an | |
341 | error, as long as the named font exists, no matter what potentially invalid | |
342 | or meaningless set of attributes the named font has. If the named font | |
343 | cannot be displayed with exactly the specified attributes, some other close | |
344 | font will be substituted automatically. | |
345 | .TP | |
346 | [2] \fIsystemfont\fR | |
347 | . | |
348 | The platform-specific name of a font, interpreted by the graphics server. | |
349 | This also includes, under X, an XLFD (see [4]) for which a single ``\fB*\fR'' | |
350 | character was used to elide more than one field in the middle of the | |
351 | name. See PLATFORM-SPECIFIC issues for a list of the system fonts. | |
352 | .VS 8.0 br | |
353 | .TP | |
354 | [3] \fIfamily \fR?\fIsize\fR? ?\fIstyle\fR? ?\fIstyle ...\fR? | |
355 | . | |
356 | A properly formed list whose first element is the desired font | |
357 | \fIfamily\fR and whose optional second element is the desired \fIsize\fR. | |
358 | The interpretation of the \fIsize\fR attribute follows the same rules | |
359 | described for \fB\-size\fR in FONT OPTIONS below. Any additional optional | |
360 | arguments following the \fIsize\fR are font \fIstyle\fRs. Possible values | |
361 | for the \fIstyle\fR arguments are as follows: | |
362 | .RS | |
363 | .DS | |
364 | .ta 3c 6c 9c | |
365 | \fBnormal bold roman italic | |
366 | underline overstrike\fR | |
367 | .DE | |
368 | .RE | |
369 | .TP | |
370 | [4] X-font names (XLFD) | |
371 | . | |
372 | A Unix-centric font name of the form | |
373 | \fI-foundry-family-weight-slant-setwidth-addstyle-pixel-point-resx-resy-spacing-width-charset-encoding\fR. | |
374 | The ``\fB*\fR'' character may be used to skip individual fields that the | |
375 | user does not care about. There must be exactly one ``\fB*\fR'' for each | |
376 | field skipped, except that a ``\fB*\fR'' at the end of the XLFD skips any | |
377 | remaining fields; the shortest valid XLFD is simply ``\fB*\fR'', signifying | |
378 | all fields as defaults. Any fields that were skipped are given default | |
379 | values. For compatibility, an XLFD always chooses a font of the specified | |
380 | pixel size (not point size); although this interpretation is not strictly | |
381 | correct, all existing applications using XLFDs assumed that one ``point'' | |
382 | was in fact one pixel and would display incorrectly (generally larger) if | |
383 | the correct size font were actually used. | |
384 | .VE | |
385 | .TP | |
386 | [5] \fIoption value \fR?\fIoption value ...\fR? | |
387 | . | |
388 | A properly formed list of \fIoption\fR\-\fIvalue\fR pairs that specify | |
389 | the desired attributes of the font, in the same format used when defining | |
390 | a named font; see FONT OPTIONS below. | |
391 | .LP | |
392 | When font description \fIfont\fR is used, the system attempts to parse the | |
393 | description according to each of the above five rules, in the order specified. | |
394 | Cases [1] and [2] must match the name of an existing named font or of a | |
395 | system font. Cases [3], [4], and [5] are accepted on all | |
396 | platforms and the closest available font will be used. In some situations | |
397 | it may not be possible to find any close font (e.g., the font family was | |
398 | a garbage value); in that case, some system-dependant default font is | |
399 | chosen. If the font description does not match any of the above patterns, | |
400 | an error is generated. | |
401 | .SH "FONT METRICS" | |
402 | . | |
403 | The following options are used by the \fBfont metrics\fR command to query | |
404 | font-specific data determined when the font was created. These properties are | |
405 | for the whole font itself and not for individual characters drawn in that | |
406 | font. In the following definitions, the ``baseline'' of a font is the | |
407 | horizontal line where the bottom of most letters line up; certain letters, | |
408 | such as lower-case ``g'' stick below the baseline. | |
409 | .TP | |
410 | \fB\-ascent \0\fR | |
411 | . | |
412 | The amount in pixels that the tallest letter sticks up above the baseline of | |
413 | the font, plus any extra blank space added by the designer of the font. | |
414 | .TP | |
415 | \fB\-descent \0\fR | |
416 | . | |
417 | The largest amount in pixels that any letter sticks down below the baseline | |
418 | of the font, plus any extra blank space added by the designer of the font. | |
419 | .TP | |
420 | \fB\-linespace\fR | |
421 | . | |
422 | Returns how far apart vertically in pixels two lines of text using the same | |
423 | font should be placed so that none of the characters in one line overlap any | |
424 | of the characters in the other line. This is generally the sum of the ascent | |
425 | above the baseline line plus the descent below the baseline. | |
426 | .TP | |
427 | \fB\-fixed \0\fR | |
428 | . | |
429 | Returns a boolean flag that is ``\fB1\fR'' if this is a fixed-width font, | |
430 | where each normal character is the same width as all the other | |
431 | characters, or is ``\fB0\fR'' if this is a proportionally-spaced font, where | |
432 | individual characters have different widths. The widths of control | |
433 | characters, tab characters, and other non-printing characters are not | |
434 | included when calculating this value. | |
435 | .SH "FONT OPTIONS" | |
436 | The following options are supported on all platforms, and are used when | |
437 | constructing a named font or when specifying a font using style [5] as | |
438 | above: | |
439 | .TP | |
440 | \fB\-family \fIname\fR | |
441 | . | |
442 | The case-insensitive font family name. Tk guarantees to support the font | |
443 | families named \fBCourier\fR (a monospaced ``typewriter'' font), \fBTimes\fR | |
444 | (a serifed ``newspaper'' font), and \fBHelvetica\fR (a sans-serif | |
445 | ``European'' font). The most closely matching native font family will | |
446 | automatically be substituted when one of the above font families is used. | |
447 | The \fIname\fR may also be the name of a native, platform-specific font | |
448 | family; in that case it will work as desired on one platform but may not | |
449 | display correctly on other platforms. If the family is unspecified or | |
450 | unrecognized, a platform-specific default font will be chosen. | |
451 | .VS | |
452 | .TP | |
453 | \fB\-size \fIsize\fR | |
454 | . | |
455 | The desired size of the font. If the \fIsize\fR argument is a positive | |
456 | number, it is interpreted as a size in points. If \fIsize\fR is a negative | |
457 | number, its absolute value is interpreted as a size in pixels. If a | |
458 | font cannot be displayed at the specified size, a nearby size will be | |
459 | chosen. If \fIsize\fR is unspecified or zero, a platform-dependent default | |
460 | size will be chosen. | |
461 | .RS | |
462 | .PP | |
463 | Sizes should normally be specified in points so the application will remain | |
464 | the same ruler size on the screen, even when changing screen resolutions or | |
465 | moving scripts across platforms. However, specifying pixels is useful in | |
466 | certain circumstances such as when a piece of text must line up with respect | |
467 | to a fixed-size bitmap. The mapping between points and pixels is set when | |
468 | the application starts, based on properties of the installed monitor, but it | |
469 | can be overridden by calling the \fBtk scaling\fR command. | |
470 | .RE | |
471 | .VE | |
472 | .TP | |
473 | \fB\-weight \fIweight\fR | |
474 | . | |
475 | The nominal thickness of the characters in the font. The value | |
476 | \fBnormal\fR specifies a normal weight font, while \fBbold\fR specifies a | |
477 | bold font. The closest available weight to the one specified will | |
478 | be chosen. The default weight is \fBnormal\fR. | |
479 | .TP | |
480 | \fB\-slant \fIslant\fR | |
481 | The amount the characters in the font are slanted away from the | |
482 | vertical. Valid values for slant are \fBroman\fR and \fBitalic\fR. | |
483 | A roman font is the normal, upright appearance of a font, while | |
484 | an italic font is one that is tilted some number of degrees from upright. | |
485 | The closest available slant to the one specified will be chosen. | |
486 | The default slant is \fBroman\fR. | |
487 | .TP | |
488 | \fB\-underline \fIboolean\fR | |
489 | The value is a boolean flag that specifies whether characters in this | |
490 | font should be underlined. The default value for underline is \fBfalse\fR. | |
491 | .TP | |
492 | \fB\-overstrike \fIboolean\fR | |
493 | The value is a boolean flag that specifies whether a horizontal line should | |
494 | be drawn through the middle of characters in this font. The default value | |
495 | for overstrike is \fBfalse\fR. | |
496 | .SH "PLATFORM-SPECIFIC ISSUES" | |
497 | .LP | |
498 | The following named system fonts are supported: | |
499 | .RS | |
500 | .TP | |
501 | X Windows: | |
502 | All valid X font names, including those listed by xlsfonts(1), are available. | |
503 | .TP | |
504 | MS Windows: | |
505 | .DS | |
506 | .ta 3c 6c | |
507 | \fBsystem ansi device | |
508 | systemfixed ansifixed oemfixed\fR | |
509 | .DE | |
510 | .TP | |
511 | Macintosh: | |
512 | .DS | |
513 | .ta 3c 6c | |
514 | \fBsystem application\fR | |
515 | .DE | |
516 | .RE | |
517 | .SH EXAMPLE | |
518 | Fill a text widget with lots of font demonstrators, one for every font | |
519 | family installed on your system: | |
520 | .CS | |
521 | pack [text .t -wrap none] -fill both -expand 1 | |
522 | set count 0 | |
523 | set tabwidth 0 | |
524 | foreach family [lsort -dictionary [\fBfont families\fR]] { | |
525 | .t tag configure f[incr count] -font [list $family 10] | |
526 | .t insert end ${family}:\\t {} \\ | |
527 | "This is a simple sampler\\n" f$count | |
528 | set w [\fBfont measure\fR [.t cget -font] ${family}:] | |
529 | if {$w+5 > $tabwidth} { | |
530 | set tabwidth [expr {$w+5}] | |
531 | .t configure -tabs $tabwidth | |
532 | } | |
533 | } | |
534 | .CE | |
535 | ||
536 | .SH "SEE ALSO" | |
537 | options(n) | |
538 | ||
539 | .SH KEYWORDS | |
540 | font |