| 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 | .\} |
| 135 | .\} |
| 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 |