| 1 | /* |
| 2 | * Unified font management for GTK. |
| 3 | * |
| 4 | * PuTTY is willing to use both old-style X server-side bitmap |
| 5 | * fonts _and_ GTK2/Pango client-side fonts. This requires us to |
| 6 | * do a bit of work to wrap the two wildly different APIs into |
| 7 | * forms the rest of the code can switch between seamlessly, and |
| 8 | * also requires a custom font selector capable of handling both |
| 9 | * types of font. |
| 10 | */ |
| 11 | |
| 12 | #include <assert.h> |
| 13 | #include <stdlib.h> |
| 14 | #include <string.h> |
| 15 | #include <gtk/gtk.h> |
| 16 | #include <gdk/gdkkeysyms.h> |
| 17 | #include <gdk/gdkx.h> |
| 18 | #include <X11/Xlib.h> |
| 19 | #include <X11/Xutil.h> |
| 20 | #include <X11/Xatom.h> |
| 21 | |
| 22 | #include "putty.h" |
| 23 | #include "gtkfont.h" |
| 24 | #include "tree234.h" |
| 25 | |
| 26 | /* |
| 27 | * Future work: |
| 28 | * |
| 29 | * - it would be nice to have a display of the current font name, |
| 30 | * and in particular whether it's client- or server-side, |
| 31 | * during the progress of the font selector. |
| 32 | * |
| 33 | * - it would be nice if we could move the processing of |
| 34 | * underline and VT100 double width into this module, so that |
| 35 | * instead of using the ghastly pixmap-stretching technique |
| 36 | * everywhere we could tell the Pango backend to scale its |
| 37 | * fonts to double size properly and at full resolution. |
| 38 | * However, this requires me to learn how to make Pango stretch |
| 39 | * text to an arbitrary aspect ratio (for double-width only |
| 40 | * text, which perversely is harder than DW+DH), and right now |
| 41 | * I haven't the energy. |
| 42 | */ |
| 43 | |
| 44 | #if !GLIB_CHECK_VERSION(1,3,7) |
| 45 | #define g_ascii_strcasecmp g_strcasecmp |
| 46 | #define g_ascii_strncasecmp g_strncasecmp |
| 47 | #endif |
| 48 | |
| 49 | /* |
| 50 | * Ad-hoc vtable mechanism to allow font structures to be |
| 51 | * polymorphic. |
| 52 | * |
| 53 | * Any instance of `unifont' used in the vtable functions will |
| 54 | * actually be the first element of a larger structure containing |
| 55 | * data specific to the subtype. This is permitted by the ISO C |
| 56 | * provision that one may safely cast between a pointer to a |
| 57 | * structure and a pointer to its first element. |
| 58 | */ |
| 59 | |
| 60 | #define FONTFLAG_CLIENTSIDE 0x0001 |
| 61 | #define FONTFLAG_SERVERSIDE 0x0002 |
| 62 | #define FONTFLAG_SERVERALIAS 0x0004 |
| 63 | #define FONTFLAG_NONMONOSPACED 0x0008 |
| 64 | |
| 65 | #define FONTFLAG_SORT_MASK 0x0007 /* used to disambiguate font families */ |
| 66 | |
| 67 | typedef void (*fontsel_add_entry)(void *ctx, const char *realfontname, |
| 68 | const char *family, const char *charset, |
| 69 | const char *style, const char *stylekey, |
| 70 | int size, int flags, |
| 71 | const struct unifont_vtable *fontclass); |
| 72 | |
| 73 | struct unifont_vtable { |
| 74 | /* |
| 75 | * `Methods' of the `class'. |
| 76 | */ |
| 77 | unifont *(*create)(GtkWidget *widget, const char *name, int wide, int bold, |
| 78 | int shadowoffset, int shadowalways); |
| 79 | unifont *(*create_fallback)(GtkWidget *widget, int height, int wide, |
| 80 | int bold, int shadowoffset, int shadowalways); |
| 81 | void (*destroy)(unifont *font); |
| 82 | int (*has_glyph)(unifont *font, wchar_t glyph); |
| 83 | void (*draw_text)(GdkDrawable *target, GdkGC *gc, unifont *font, |
| 84 | int x, int y, const wchar_t *string, int len, int wide, |
| 85 | int bold, int cellwidth); |
| 86 | void (*enum_fonts)(GtkWidget *widget, |
| 87 | fontsel_add_entry callback, void *callback_ctx); |
| 88 | char *(*canonify_fontname)(GtkWidget *widget, const char *name, int *size, |
| 89 | int *flags, int resolve_aliases); |
| 90 | char *(*scale_fontname)(GtkWidget *widget, const char *name, int size); |
| 91 | |
| 92 | /* |
| 93 | * `Static data members' of the `class'. |
| 94 | */ |
| 95 | const char *prefix; |
| 96 | }; |
| 97 | |
| 98 | /* ---------------------------------------------------------------------- |
| 99 | * X11 font implementation, directly using Xlib calls. |
| 100 | */ |
| 101 | |
| 102 | static int x11font_has_glyph(unifont *font, wchar_t glyph); |
| 103 | static void x11font_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font, |
| 104 | int x, int y, const wchar_t *string, int len, |
| 105 | int wide, int bold, int cellwidth); |
| 106 | static unifont *x11font_create(GtkWidget *widget, const char *name, |
| 107 | int wide, int bold, |
| 108 | int shadowoffset, int shadowalways); |
| 109 | static void x11font_destroy(unifont *font); |
| 110 | static void x11font_enum_fonts(GtkWidget *widget, |
| 111 | fontsel_add_entry callback, void *callback_ctx); |
| 112 | static char *x11font_canonify_fontname(GtkWidget *widget, const char *name, |
| 113 | int *size, int *flags, |
| 114 | int resolve_aliases); |
| 115 | static char *x11font_scale_fontname(GtkWidget *widget, const char *name, |
| 116 | int size); |
| 117 | |
| 118 | struct x11font { |
| 119 | struct unifont u; |
| 120 | /* |
| 121 | * Actual font objects. We store a number of these, for |
| 122 | * automatically guessed bold and wide variants. |
| 123 | * |
| 124 | * The parallel array `allocated' indicates whether we've |
| 125 | * tried to fetch a subfont already (thus distinguishing NULL |
| 126 | * because we haven't tried yet from NULL because we tried and |
| 127 | * failed, so that we don't keep trying and failing |
| 128 | * subsequently). |
| 129 | */ |
| 130 | XFontStruct *fonts[4]; |
| 131 | int allocated[4]; |
| 132 | /* |
| 133 | * `sixteen_bit' is true iff the font object is indexed by |
| 134 | * values larger than a byte. That is, this flag tells us |
| 135 | * whether we use XDrawString or XDrawString16, etc. |
| 136 | */ |
| 137 | int sixteen_bit; |
| 138 | /* |
| 139 | * `variable' is true iff the font is non-fixed-pitch. This |
| 140 | * enables some code which takes greater care over character |
| 141 | * positioning during text drawing. |
| 142 | */ |
| 143 | int variable; |
| 144 | /* |
| 145 | * real_charset is the charset used when translating text into the |
| 146 | * font's internal encoding inside draw_text(). This need not be |
| 147 | * the same as the public_charset provided to the client; for |
| 148 | * example, public_charset might be CS_ISO8859_1 while |
| 149 | * real_charset is CS_ISO8859_1_X11. |
| 150 | */ |
| 151 | int real_charset; |
| 152 | /* |
| 153 | * Data passed in to unifont_create(). |
| 154 | */ |
| 155 | int wide, bold, shadowoffset, shadowalways; |
| 156 | }; |
| 157 | |
| 158 | static const struct unifont_vtable x11font_vtable = { |
| 159 | x11font_create, |
| 160 | NULL, /* no fallback fonts in X11 */ |
| 161 | x11font_destroy, |
| 162 | x11font_has_glyph, |
| 163 | x11font_draw_text, |
| 164 | x11font_enum_fonts, |
| 165 | x11font_canonify_fontname, |
| 166 | x11font_scale_fontname, |
| 167 | "server", |
| 168 | }; |
| 169 | |
| 170 | static char *x11_guess_derived_font_name(XFontStruct *xfs, int bold, int wide) |
| 171 | { |
| 172 | Display *disp = GDK_DISPLAY(); |
| 173 | Atom fontprop = XInternAtom(disp, "FONT", False); |
| 174 | unsigned long ret; |
| 175 | if (XGetFontProperty(xfs, fontprop, &ret)) { |
| 176 | char *name = XGetAtomName(disp, (Atom)ret); |
| 177 | if (name && name[0] == '-') { |
| 178 | char *strings[13]; |
| 179 | char *dupname, *extrafree = NULL, *ret; |
| 180 | char *p, *q; |
| 181 | int nstr; |
| 182 | |
| 183 | p = q = dupname = dupstr(name); /* skip initial minus */ |
| 184 | nstr = 0; |
| 185 | |
| 186 | while (*p && nstr < lenof(strings)) { |
| 187 | if (*p == '-') { |
| 188 | *p = '\0'; |
| 189 | strings[nstr++] = p+1; |
| 190 | } |
| 191 | p++; |
| 192 | } |
| 193 | |
| 194 | if (nstr < lenof(strings)) |
| 195 | return NULL; /* XLFD was malformed */ |
| 196 | |
| 197 | if (bold) |
| 198 | strings[2] = "bold"; |
| 199 | |
| 200 | if (wide) { |
| 201 | /* 4 is `wideness', which obviously may have changed. */ |
| 202 | /* 5 is additional style, which may be e.g. `ja' or `ko'. */ |
| 203 | strings[4] = strings[5] = "*"; |
| 204 | strings[11] = extrafree = dupprintf("%d", 2*atoi(strings[11])); |
| 205 | } |
| 206 | |
| 207 | ret = dupcat("-", strings[ 0], "-", strings[ 1], "-", strings[ 2], |
| 208 | "-", strings[ 3], "-", strings[ 4], "-", strings[ 5], |
| 209 | "-", strings[ 6], "-", strings[ 7], "-", strings[ 8], |
| 210 | "-", strings[ 9], "-", strings[10], "-", strings[11], |
| 211 | "-", strings[12], NULL); |
| 212 | sfree(extrafree); |
| 213 | sfree(dupname); |
| 214 | |
| 215 | return ret; |
| 216 | } |
| 217 | } |
| 218 | return NULL; |
| 219 | } |
| 220 | |
| 221 | static int x11_font_width(XFontStruct *xfs, int sixteen_bit) |
| 222 | { |
| 223 | if (sixteen_bit) { |
| 224 | XChar2b space; |
| 225 | space.byte1 = 0; |
| 226 | space.byte2 = '0'; |
| 227 | return XTextWidth16(xfs, &space, 1); |
| 228 | } else { |
| 229 | return XTextWidth(xfs, "0", 1); |
| 230 | } |
| 231 | } |
| 232 | |
| 233 | static int x11_font_has_glyph(XFontStruct *xfs, int byte1, int byte2) |
| 234 | { |
| 235 | int index; |
| 236 | |
| 237 | /* |
| 238 | * Not to be confused with x11font_has_glyph, which is a method of |
| 239 | * the x11font 'class' and hence takes a unifont as argument. This |
| 240 | * is the low-level function which grubs about in an actual |
| 241 | * XFontStruct to see if a given glyph exists. |
| 242 | * |
| 243 | * We must do this ourselves rather than letting Xlib's |
| 244 | * XTextExtents16 do the job, because XTextExtents will helpfully |
| 245 | * substitute the font's default_char for any missing glyph and |
| 246 | * not tell us it did so, which precisely won't help us find out |
| 247 | * which glyphs _are_ missing. |
| 248 | * |
| 249 | * The man page for XQueryFont is rather confusing about how the |
| 250 | * per_char array in the XFontStruct is laid out, because it gives |
| 251 | * formulae for determining the two-byte X character code _from_ |
| 252 | * an index into the per_char array. Going the other way, it's |
| 253 | * rather simpler: |
| 254 | * |
| 255 | * The valid character codes have byte1 between min_byte1 and |
| 256 | * max_byte1 inclusive, and byte2 between min_char_or_byte2 and |
| 257 | * max_char_or_byte2 inclusive. This gives a rectangle of size |
| 258 | * (max_byte2-min_byte1+1) by |
| 259 | * (max_char_or_byte2-min_char_or_byte2+1), which is precisely the |
| 260 | * rectangle encoded in the per_char array. Hence, given a |
| 261 | * character code which is valid in the sense that it falls |
| 262 | * somewhere in that rectangle, its index in per_char is given by |
| 263 | * setting |
| 264 | * |
| 265 | * x = byte2 - min_char_or_byte2 |
| 266 | * y = byte1 - min_byte1 |
| 267 | * index = y * (max_char_or_byte2-min_char_or_byte2+1) + x |
| 268 | * |
| 269 | * If min_byte1 and min_byte2 are both zero, that's a special case |
| 270 | * which can be treated as if min_byte2 was 1 instead, i.e. the |
| 271 | * per_char array just runs from min_char_or_byte2 to |
| 272 | * max_char_or_byte2 inclusive, and byte1 should always be zero. |
| 273 | */ |
| 274 | |
| 275 | if (byte2 < xfs->min_char_or_byte2 || byte2 > xfs->max_char_or_byte2) |
| 276 | return FALSE; |
| 277 | |
| 278 | if (xfs->min_byte1 == 0 && xfs->max_byte1 == 0) { |
| 279 | index = byte2 - xfs->min_char_or_byte2; |
| 280 | } else { |
| 281 | if (byte1 < xfs->min_byte1 || byte1 > xfs->max_byte1) |
| 282 | return FALSE; |
| 283 | index = ((byte2 - xfs->min_char_or_byte2) + |
| 284 | ((byte1 - xfs->min_byte1) * |
| 285 | (xfs->max_char_or_byte2 - xfs->min_char_or_byte2 + 1))); |
| 286 | } |
| 287 | |
| 288 | if (!xfs->per_char) /* per_char NULL => everything in range exists */ |
| 289 | return TRUE; |
| 290 | |
| 291 | return (xfs->per_char[index].ascent + xfs->per_char[index].descent > 0 || |
| 292 | xfs->per_char[index].width > 0); |
| 293 | } |
| 294 | |
| 295 | static unifont *x11font_create(GtkWidget *widget, const char *name, |
| 296 | int wide, int bold, |
| 297 | int shadowoffset, int shadowalways) |
| 298 | { |
| 299 | struct x11font *xfont; |
| 300 | XFontStruct *xfs; |
| 301 | Display *disp = GDK_DISPLAY(); |
| 302 | Atom charset_registry, charset_encoding, spacing; |
| 303 | unsigned long registry_ret, encoding_ret, spacing_ret; |
| 304 | int pubcs, realcs, sixteen_bit, variable; |
| 305 | int i; |
| 306 | |
| 307 | xfs = XLoadQueryFont(disp, name); |
| 308 | if (!xfs) |
| 309 | return NULL; |
| 310 | |
| 311 | charset_registry = XInternAtom(disp, "CHARSET_REGISTRY", False); |
| 312 | charset_encoding = XInternAtom(disp, "CHARSET_ENCODING", False); |
| 313 | |
| 314 | pubcs = realcs = CS_NONE; |
| 315 | sixteen_bit = FALSE; |
| 316 | variable = TRUE; |
| 317 | |
| 318 | if (XGetFontProperty(xfs, charset_registry, ®istry_ret) && |
| 319 | XGetFontProperty(xfs, charset_encoding, &encoding_ret)) { |
| 320 | char *reg, *enc; |
| 321 | reg = XGetAtomName(disp, (Atom)registry_ret); |
| 322 | enc = XGetAtomName(disp, (Atom)encoding_ret); |
| 323 | if (reg && enc) { |
| 324 | char *encoding = dupcat(reg, "-", enc, NULL); |
| 325 | pubcs = realcs = charset_from_xenc(encoding); |
| 326 | |
| 327 | /* |
| 328 | * iso10646-1 is the only wide font encoding we |
| 329 | * support. In this case, we expect clients to give us |
| 330 | * UTF-8, which this module must internally convert |
| 331 | * into 16-bit Unicode. |
| 332 | */ |
| 333 | if (!strcasecmp(encoding, "iso10646-1")) { |
| 334 | sixteen_bit = TRUE; |
| 335 | pubcs = realcs = CS_UTF8; |
| 336 | } |
| 337 | |
| 338 | /* |
| 339 | * Hack for X line-drawing characters: if the primary font |
| 340 | * is encoded as ISO-8859-1, and has valid glyphs in the |
| 341 | * low character positions, it is assumed that those |
| 342 | * glyphs are the VT100 line-drawing character set. |
| 343 | */ |
| 344 | if (pubcs == CS_ISO8859_1) { |
| 345 | int ch; |
| 346 | for (ch = 1; ch < 32; ch++) |
| 347 | if (!x11_font_has_glyph(xfs, 0, ch)) |
| 348 | break; |
| 349 | if (ch == 32) |
| 350 | realcs = CS_ISO8859_1_X11; |
| 351 | } |
| 352 | |
| 353 | sfree(encoding); |
| 354 | } |
| 355 | } |
| 356 | |
| 357 | spacing = XInternAtom(disp, "SPACING", False); |
| 358 | if (XGetFontProperty(xfs, spacing, &spacing_ret)) { |
| 359 | char *spc; |
| 360 | spc = XGetAtomName(disp, (Atom)spacing_ret); |
| 361 | |
| 362 | if (spc && strchr("CcMm", spc[0])) |
| 363 | variable = FALSE; |
| 364 | } |
| 365 | |
| 366 | xfont = snew(struct x11font); |
| 367 | xfont->u.vt = &x11font_vtable; |
| 368 | xfont->u.width = x11_font_width(xfs, sixteen_bit); |
| 369 | xfont->u.ascent = xfs->ascent; |
| 370 | xfont->u.descent = xfs->descent; |
| 371 | xfont->u.height = xfont->u.ascent + xfont->u.descent; |
| 372 | xfont->u.public_charset = pubcs; |
| 373 | xfont->u.want_fallback = TRUE; |
| 374 | xfont->real_charset = realcs; |
| 375 | xfont->fonts[0] = xfs; |
| 376 | xfont->allocated[0] = TRUE; |
| 377 | xfont->sixteen_bit = sixteen_bit; |
| 378 | xfont->variable = variable; |
| 379 | xfont->wide = wide; |
| 380 | xfont->bold = bold; |
| 381 | xfont->shadowoffset = shadowoffset; |
| 382 | xfont->shadowalways = shadowalways; |
| 383 | |
| 384 | for (i = 1; i < lenof(xfont->fonts); i++) { |
| 385 | xfont->fonts[i] = NULL; |
| 386 | xfont->allocated[i] = FALSE; |
| 387 | } |
| 388 | |
| 389 | return (unifont *)xfont; |
| 390 | } |
| 391 | |
| 392 | static void x11font_destroy(unifont *font) |
| 393 | { |
| 394 | Display *disp = GDK_DISPLAY(); |
| 395 | struct x11font *xfont = (struct x11font *)font; |
| 396 | int i; |
| 397 | |
| 398 | for (i = 0; i < lenof(xfont->fonts); i++) |
| 399 | if (xfont->fonts[i]) |
| 400 | XFreeFont(disp, xfont->fonts[i]); |
| 401 | sfree(font); |
| 402 | } |
| 403 | |
| 404 | static void x11_alloc_subfont(struct x11font *xfont, int sfid) |
| 405 | { |
| 406 | Display *disp = GDK_DISPLAY(); |
| 407 | char *derived_name = x11_guess_derived_font_name |
| 408 | (xfont->fonts[0], sfid & 1, !!(sfid & 2)); |
| 409 | xfont->fonts[sfid] = XLoadQueryFont(disp, derived_name); |
| 410 | xfont->allocated[sfid] = TRUE; |
| 411 | sfree(derived_name); |
| 412 | /* Note that xfont->fonts[sfid] may still be NULL, if XLQF failed. */ |
| 413 | } |
| 414 | |
| 415 | static int x11font_has_glyph(unifont *font, wchar_t glyph) |
| 416 | { |
| 417 | struct x11font *xfont = (struct x11font *)font; |
| 418 | |
| 419 | if (xfont->sixteen_bit) { |
| 420 | /* |
| 421 | * This X font has 16-bit character indices, which means |
| 422 | * we can directly use our Unicode input value. |
| 423 | */ |
| 424 | return x11_font_has_glyph(xfont->fonts[0], glyph >> 8, glyph & 0xFF); |
| 425 | } else { |
| 426 | /* |
| 427 | * This X font has 8-bit indices, so we must convert to the |
| 428 | * appropriate character set. |
| 429 | */ |
| 430 | char sbstring[2]; |
| 431 | int sblen = wc_to_mb(xfont->real_charset, 0, &glyph, 1, |
| 432 | sbstring, 2, "", NULL, NULL); |
| 433 | if (sblen == 0 || !sbstring[0]) |
| 434 | return FALSE; /* not even in the charset */ |
| 435 | |
| 436 | return x11_font_has_glyph(xfont->fonts[0], 0, |
| 437 | (unsigned char)sbstring[0]); |
| 438 | } |
| 439 | } |
| 440 | |
| 441 | #if !GTK_CHECK_VERSION(2,0,0) |
| 442 | #define GDK_DRAWABLE_XID(d) GDK_WINDOW_XWINDOW(d) /* GTK1's name for this */ |
| 443 | #endif |
| 444 | |
| 445 | static void x11font_really_draw_text_16(GdkDrawable *target, XFontStruct *xfs, |
| 446 | GC gc, int x, int y, |
| 447 | const XChar2b *string, int nchars, |
| 448 | int shadowoffset, |
| 449 | int fontvariable, int cellwidth) |
| 450 | { |
| 451 | Display *disp = GDK_DISPLAY(); |
| 452 | int step, nsteps, centre; |
| 453 | |
| 454 | if (fontvariable) { |
| 455 | /* |
| 456 | * In a variable-pitch font, we draw one character at a |
| 457 | * time, and centre it in the character cell. |
| 458 | */ |
| 459 | step = 1; |
| 460 | nsteps = nchars; |
| 461 | centre = TRUE; |
| 462 | } else { |
| 463 | /* |
| 464 | * In a fixed-pitch font, we can draw the whole lot in one go. |
| 465 | */ |
| 466 | step = nchars; |
| 467 | nsteps = 1; |
| 468 | centre = FALSE; |
| 469 | } |
| 470 | |
| 471 | while (nsteps-- > 0) { |
| 472 | int X = x; |
| 473 | if (centre) |
| 474 | X += (cellwidth - XTextWidth16(xfs, string, step)) / 2; |
| 475 | |
| 476 | XDrawString16(disp, GDK_DRAWABLE_XID(target), gc, |
| 477 | X, y, string, step); |
| 478 | if (shadowoffset) |
| 479 | XDrawString16(disp, GDK_DRAWABLE_XID(target), gc, |
| 480 | X + shadowoffset, y, string, step); |
| 481 | |
| 482 | x += cellwidth; |
| 483 | string += step; |
| 484 | } |
| 485 | } |
| 486 | |
| 487 | static void x11font_really_draw_text(GdkDrawable *target, XFontStruct *xfs, |
| 488 | GC gc, int x, int y, |
| 489 | const char *string, int nchars, |
| 490 | int shadowoffset, |
| 491 | int fontvariable, int cellwidth) |
| 492 | { |
| 493 | Display *disp = GDK_DISPLAY(); |
| 494 | int step, nsteps, centre; |
| 495 | |
| 496 | if (fontvariable) { |
| 497 | /* |
| 498 | * In a variable-pitch font, we draw one character at a |
| 499 | * time, and centre it in the character cell. |
| 500 | */ |
| 501 | step = 1; |
| 502 | nsteps = nchars; |
| 503 | centre = TRUE; |
| 504 | } else { |
| 505 | /* |
| 506 | * In a fixed-pitch font, we can draw the whole lot in one go. |
| 507 | */ |
| 508 | step = nchars; |
| 509 | nsteps = 1; |
| 510 | centre = FALSE; |
| 511 | } |
| 512 | |
| 513 | while (nsteps-- > 0) { |
| 514 | int X = x; |
| 515 | if (centre) |
| 516 | X += (cellwidth - XTextWidth(xfs, string, step)) / 2; |
| 517 | |
| 518 | XDrawString(disp, GDK_DRAWABLE_XID(target), gc, |
| 519 | X, y, string, step); |
| 520 | if (shadowoffset) |
| 521 | XDrawString(disp, GDK_DRAWABLE_XID(target), gc, |
| 522 | X + shadowoffset, y, string, step); |
| 523 | |
| 524 | x += cellwidth; |
| 525 | string += step; |
| 526 | } |
| 527 | } |
| 528 | |
| 529 | static void x11font_draw_text(GdkDrawable *target, GdkGC *gdkgc, unifont *font, |
| 530 | int x, int y, const wchar_t *string, int len, |
| 531 | int wide, int bold, int cellwidth) |
| 532 | { |
| 533 | Display *disp = GDK_DISPLAY(); |
| 534 | struct x11font *xfont = (struct x11font *)font; |
| 535 | GC gc = GDK_GC_XGC(gdkgc); |
| 536 | int sfid; |
| 537 | int shadowoffset = 0; |
| 538 | int mult = (wide ? 2 : 1); |
| 539 | |
| 540 | wide -= xfont->wide; |
| 541 | bold -= xfont->bold; |
| 542 | |
| 543 | /* |
| 544 | * Decide which subfont we're using, and whether we have to |
| 545 | * use shadow bold. |
| 546 | */ |
| 547 | if (xfont->shadowalways && bold) { |
| 548 | shadowoffset = xfont->shadowoffset; |
| 549 | bold = 0; |
| 550 | } |
| 551 | sfid = 2 * wide + bold; |
| 552 | if (!xfont->allocated[sfid]) |
| 553 | x11_alloc_subfont(xfont, sfid); |
| 554 | if (bold && !xfont->fonts[sfid]) { |
| 555 | bold = 0; |
| 556 | shadowoffset = xfont->shadowoffset; |
| 557 | sfid = 2 * wide + bold; |
| 558 | if (!xfont->allocated[sfid]) |
| 559 | x11_alloc_subfont(xfont, sfid); |
| 560 | } |
| 561 | |
| 562 | if (!xfont->fonts[sfid]) |
| 563 | return; /* we've tried our best, but no luck */ |
| 564 | |
| 565 | XSetFont(disp, gc, xfont->fonts[sfid]->fid); |
| 566 | |
| 567 | if (xfont->sixteen_bit) { |
| 568 | /* |
| 569 | * This X font has 16-bit character indices, which means |
| 570 | * we can directly use our Unicode input string. |
| 571 | */ |
| 572 | XChar2b *xcs; |
| 573 | int i; |
| 574 | |
| 575 | xcs = snewn(len, XChar2b); |
| 576 | for (i = 0; i < len; i++) { |
| 577 | xcs[i].byte1 = string[i] >> 8; |
| 578 | xcs[i].byte2 = string[i]; |
| 579 | } |
| 580 | |
| 581 | x11font_really_draw_text_16(target, xfont->fonts[sfid], gc, x, y, |
| 582 | xcs, len, shadowoffset, |
| 583 | xfont->variable, cellwidth * mult); |
| 584 | sfree(xcs); |
| 585 | } else { |
| 586 | /* |
| 587 | * This X font has 8-bit indices, so we must convert to the |
| 588 | * appropriate character set. |
| 589 | */ |
| 590 | char *sbstring = snewn(len+1, char); |
| 591 | int sblen = wc_to_mb(xfont->real_charset, 0, string, len, |
| 592 | sbstring, len+1, ".", NULL, NULL); |
| 593 | x11font_really_draw_text(target, xfont->fonts[sfid], gc, x, y, |
| 594 | sbstring, sblen, shadowoffset, |
| 595 | xfont->variable, cellwidth * mult); |
| 596 | sfree(sbstring); |
| 597 | } |
| 598 | } |
| 599 | |
| 600 | static void x11font_enum_fonts(GtkWidget *widget, |
| 601 | fontsel_add_entry callback, void *callback_ctx) |
| 602 | { |
| 603 | char **fontnames; |
| 604 | char *tmp = NULL; |
| 605 | int nnames, i, max, tmpsize; |
| 606 | |
| 607 | max = 32768; |
| 608 | while (1) { |
| 609 | fontnames = XListFonts(GDK_DISPLAY(), "*", max, &nnames); |
| 610 | if (nnames >= max) { |
| 611 | XFreeFontNames(fontnames); |
| 612 | max *= 2; |
| 613 | } else |
| 614 | break; |
| 615 | } |
| 616 | |
| 617 | tmpsize = 0; |
| 618 | |
| 619 | for (i = 0; i < nnames; i++) { |
| 620 | if (fontnames[i][0] == '-') { |
| 621 | /* |
| 622 | * Dismember an XLFD and convert it into the format |
| 623 | * we'll be using in the font selector. |
| 624 | */ |
| 625 | char *components[14]; |
| 626 | char *p, *font, *style, *stylekey, *charset; |
| 627 | int j, weightkey, slantkey, setwidthkey; |
| 628 | int thistmpsize, fontsize, flags; |
| 629 | |
| 630 | thistmpsize = 4 * strlen(fontnames[i]) + 256; |
| 631 | if (tmpsize < thistmpsize) { |
| 632 | tmpsize = thistmpsize; |
| 633 | tmp = sresize(tmp, tmpsize, char); |
| 634 | } |
| 635 | strcpy(tmp, fontnames[i]); |
| 636 | |
| 637 | p = tmp; |
| 638 | for (j = 0; j < 14; j++) { |
| 639 | if (*p) |
| 640 | *p++ = '\0'; |
| 641 | components[j] = p; |
| 642 | while (*p && *p != '-') |
| 643 | p++; |
| 644 | } |
| 645 | *p++ = '\0'; |
| 646 | |
| 647 | /* |
| 648 | * Font name is made up of fields 0 and 1, in reverse |
| 649 | * order with parentheses. (This is what the GTK 1.2 X |
| 650 | * font selector does, and it seems to come out |
| 651 | * looking reasonably sensible.) |
| 652 | */ |
| 653 | font = p; |
| 654 | p += 1 + sprintf(p, "%s (%s)", components[1], components[0]); |
| 655 | |
| 656 | /* |
| 657 | * Charset is made up of fields 12 and 13. |
| 658 | */ |
| 659 | charset = p; |
| 660 | p += 1 + sprintf(p, "%s-%s", components[12], components[13]); |
| 661 | |
| 662 | /* |
| 663 | * Style is a mixture of quite a lot of the fields, |
| 664 | * with some strange formatting. |
| 665 | */ |
| 666 | style = p; |
| 667 | p += sprintf(p, "%s", components[2][0] ? components[2] : |
| 668 | "regular"); |
| 669 | if (!g_ascii_strcasecmp(components[3], "i")) |
| 670 | p += sprintf(p, " italic"); |
| 671 | else if (!g_ascii_strcasecmp(components[3], "o")) |
| 672 | p += sprintf(p, " oblique"); |
| 673 | else if (!g_ascii_strcasecmp(components[3], "ri")) |
| 674 | p += sprintf(p, " reverse italic"); |
| 675 | else if (!g_ascii_strcasecmp(components[3], "ro")) |
| 676 | p += sprintf(p, " reverse oblique"); |
| 677 | else if (!g_ascii_strcasecmp(components[3], "ot")) |
| 678 | p += sprintf(p, " other-slant"); |
| 679 | if (components[4][0] && g_ascii_strcasecmp(components[4], "normal")) |
| 680 | p += sprintf(p, " %s", components[4]); |
| 681 | if (!g_ascii_strcasecmp(components[10], "m")) |
| 682 | p += sprintf(p, " [M]"); |
| 683 | if (!g_ascii_strcasecmp(components[10], "c")) |
| 684 | p += sprintf(p, " [C]"); |
| 685 | if (components[5][0]) |
| 686 | p += sprintf(p, " %s", components[5]); |
| 687 | |
| 688 | /* |
| 689 | * Style key is the same stuff as above, but with a |
| 690 | * couple of transformations done on it to make it |
| 691 | * sort more sensibly. |
| 692 | */ |
| 693 | p++; |
| 694 | stylekey = p; |
| 695 | if (!g_ascii_strcasecmp(components[2], "medium") || |
| 696 | !g_ascii_strcasecmp(components[2], "regular") || |
| 697 | !g_ascii_strcasecmp(components[2], "normal") || |
| 698 | !g_ascii_strcasecmp(components[2], "book")) |
| 699 | weightkey = 0; |
| 700 | else if (!g_ascii_strncasecmp(components[2], "demi", 4) || |
| 701 | !g_ascii_strncasecmp(components[2], "semi", 4)) |
| 702 | weightkey = 1; |
| 703 | else |
| 704 | weightkey = 2; |
| 705 | if (!g_ascii_strcasecmp(components[3], "r")) |
| 706 | slantkey = 0; |
| 707 | else if (!g_ascii_strncasecmp(components[3], "r", 1)) |
| 708 | slantkey = 2; |
| 709 | else |
| 710 | slantkey = 1; |
| 711 | if (!g_ascii_strcasecmp(components[4], "normal")) |
| 712 | setwidthkey = 0; |
| 713 | else |
| 714 | setwidthkey = 1; |
| 715 | |
| 716 | p += sprintf(p, "%04d%04d%s%04d%04d%s%04d%04d%s%04d%s%04d%s", |
| 717 | weightkey, |
| 718 | (int)strlen(components[2]), components[2], |
| 719 | slantkey, |
| 720 | (int)strlen(components[3]), components[3], |
| 721 | setwidthkey, |
| 722 | (int)strlen(components[4]), components[4], |
| 723 | (int)strlen(components[10]), components[10], |
| 724 | (int)strlen(components[5]), components[5]); |
| 725 | |
| 726 | assert(p - tmp < thistmpsize); |
| 727 | |
| 728 | /* |
| 729 | * Size is in pixels, for our application, so we |
| 730 | * derive it directly from the pixel size field, |
| 731 | * number 6. |
| 732 | */ |
| 733 | fontsize = atoi(components[6]); |
| 734 | |
| 735 | /* |
| 736 | * Flags: we need to know whether this is a monospaced |
| 737 | * font, which we do by examining the spacing field |
| 738 | * again. |
| 739 | */ |
| 740 | flags = FONTFLAG_SERVERSIDE; |
| 741 | if (!strchr("CcMm", components[10][0])) |
| 742 | flags |= FONTFLAG_NONMONOSPACED; |
| 743 | |
| 744 | /* |
| 745 | * Not sure why, but sometimes the X server will |
| 746 | * deliver dummy font types in which fontsize comes |
| 747 | * out as zero. Filter those out. |
| 748 | */ |
| 749 | if (fontsize) |
| 750 | callback(callback_ctx, fontnames[i], font, charset, |
| 751 | style, stylekey, fontsize, flags, &x11font_vtable); |
| 752 | } else { |
| 753 | /* |
| 754 | * This isn't an XLFD, so it must be an alias. |
| 755 | * Transmit it with mostly null data. |
| 756 | * |
| 757 | * It would be nice to work out if it's monospaced |
| 758 | * here, but at the moment I can't see that being |
| 759 | * anything but computationally hideous. Ah well. |
| 760 | */ |
| 761 | callback(callback_ctx, fontnames[i], fontnames[i], NULL, |
| 762 | NULL, NULL, 0, FONTFLAG_SERVERALIAS, &x11font_vtable); |
| 763 | } |
| 764 | } |
| 765 | XFreeFontNames(fontnames); |
| 766 | } |
| 767 | |
| 768 | static char *x11font_canonify_fontname(GtkWidget *widget, const char *name, |
| 769 | int *size, int *flags, |
| 770 | int resolve_aliases) |
| 771 | { |
| 772 | /* |
| 773 | * When given an X11 font name to try to make sense of for a |
| 774 | * font selector, we must attempt to load it (to see if it |
| 775 | * exists), and then canonify it by extracting its FONT |
| 776 | * property, which should give its full XLFD even if what we |
| 777 | * originally had was a wildcard. |
| 778 | * |
| 779 | * However, we must carefully avoid canonifying font |
| 780 | * _aliases_, unless specifically asked to, because the font |
| 781 | * selector treats them as worthwhile in their own right. |
| 782 | */ |
| 783 | XFontStruct *xfs; |
| 784 | Display *disp = GDK_DISPLAY(); |
| 785 | Atom fontprop, fontprop2; |
| 786 | unsigned long ret; |
| 787 | |
| 788 | xfs = XLoadQueryFont(disp, name); |
| 789 | |
| 790 | if (!xfs) |
| 791 | return NULL; /* didn't make sense to us, sorry */ |
| 792 | |
| 793 | fontprop = XInternAtom(disp, "FONT", False); |
| 794 | |
| 795 | if (XGetFontProperty(xfs, fontprop, &ret)) { |
| 796 | char *newname = XGetAtomName(disp, (Atom)ret); |
| 797 | if (newname) { |
| 798 | unsigned long fsize = 12; |
| 799 | |
| 800 | fontprop2 = XInternAtom(disp, "PIXEL_SIZE", False); |
| 801 | if (XGetFontProperty(xfs, fontprop2, &fsize) && fsize > 0) { |
| 802 | *size = fsize; |
| 803 | XFreeFont(disp, xfs); |
| 804 | if (flags) { |
| 805 | if (name[0] == '-' || resolve_aliases) |
| 806 | *flags = FONTFLAG_SERVERSIDE; |
| 807 | else |
| 808 | *flags = FONTFLAG_SERVERALIAS; |
| 809 | } |
| 810 | return dupstr(name[0] == '-' || resolve_aliases ? |
| 811 | newname : name); |
| 812 | } |
| 813 | } |
| 814 | } |
| 815 | |
| 816 | XFreeFont(disp, xfs); |
| 817 | |
| 818 | return NULL; /* something went wrong */ |
| 819 | } |
| 820 | |
| 821 | static char *x11font_scale_fontname(GtkWidget *widget, const char *name, |
| 822 | int size) |
| 823 | { |
| 824 | return NULL; /* shan't */ |
| 825 | } |
| 826 | |
| 827 | #if GTK_CHECK_VERSION(2,0,0) |
| 828 | |
| 829 | /* ---------------------------------------------------------------------- |
| 830 | * Pango font implementation (for GTK 2 only). |
| 831 | */ |
| 832 | |
| 833 | #if defined PANGO_PRE_1POINT4 && !defined PANGO_PRE_1POINT6 |
| 834 | #define PANGO_PRE_1POINT6 /* make life easier for pre-1.4 folk */ |
| 835 | #endif |
| 836 | |
| 837 | static int pangofont_has_glyph(unifont *font, wchar_t glyph); |
| 838 | static void pangofont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font, |
| 839 | int x, int y, const wchar_t *string, int len, |
| 840 | int wide, int bold, int cellwidth); |
| 841 | static unifont *pangofont_create(GtkWidget *widget, const char *name, |
| 842 | int wide, int bold, |
| 843 | int shadowoffset, int shadowalways); |
| 844 | static unifont *pangofont_create_fallback(GtkWidget *widget, int height, |
| 845 | int wide, int bold, |
| 846 | int shadowoffset, int shadowalways); |
| 847 | static void pangofont_destroy(unifont *font); |
| 848 | static void pangofont_enum_fonts(GtkWidget *widget, fontsel_add_entry callback, |
| 849 | void *callback_ctx); |
| 850 | static char *pangofont_canonify_fontname(GtkWidget *widget, const char *name, |
| 851 | int *size, int *flags, |
| 852 | int resolve_aliases); |
| 853 | static char *pangofont_scale_fontname(GtkWidget *widget, const char *name, |
| 854 | int size); |
| 855 | |
| 856 | struct pangofont { |
| 857 | struct unifont u; |
| 858 | /* |
| 859 | * Pango objects. |
| 860 | */ |
| 861 | PangoFontDescription *desc; |
| 862 | PangoFontset *fset; |
| 863 | /* |
| 864 | * The containing widget. |
| 865 | */ |
| 866 | GtkWidget *widget; |
| 867 | /* |
| 868 | * Data passed in to unifont_create(). |
| 869 | */ |
| 870 | int bold, shadowoffset, shadowalways; |
| 871 | }; |
| 872 | |
| 873 | static const struct unifont_vtable pangofont_vtable = { |
| 874 | pangofont_create, |
| 875 | pangofont_create_fallback, |
| 876 | pangofont_destroy, |
| 877 | pangofont_has_glyph, |
| 878 | pangofont_draw_text, |
| 879 | pangofont_enum_fonts, |
| 880 | pangofont_canonify_fontname, |
| 881 | pangofont_scale_fontname, |
| 882 | "client", |
| 883 | }; |
| 884 | |
| 885 | /* |
| 886 | * This function is used to rigorously validate a |
| 887 | * PangoFontDescription. Later versions of Pango have a nasty |
| 888 | * habit of accepting _any_ old string as input to |
| 889 | * pango_font_description_from_string and returning a font |
| 890 | * description which can actually be used to display text, even if |
| 891 | * they have to do it by falling back to their most default font. |
| 892 | * This is doubtless helpful in some situations, but not here, |
| 893 | * because we need to know if a Pango font string actually _makes |
| 894 | * sense_ in order to fall back to treating it as an X font name |
| 895 | * if it doesn't. So we check that the font family is actually one |
| 896 | * supported by Pango. |
| 897 | */ |
| 898 | static int pangofont_check_desc_makes_sense(PangoContext *ctx, |
| 899 | PangoFontDescription *desc) |
| 900 | { |
| 901 | #ifndef PANGO_PRE_1POINT6 |
| 902 | PangoFontMap *map; |
| 903 | #endif |
| 904 | PangoFontFamily **families; |
| 905 | int i, nfamilies, matched; |
| 906 | |
| 907 | /* |
| 908 | * Ask Pango for a list of font families, and iterate through |
| 909 | * them to see if one of them matches the family in the |
| 910 | * PangoFontDescription. |
| 911 | */ |
| 912 | #ifndef PANGO_PRE_1POINT6 |
| 913 | map = pango_context_get_font_map(ctx); |
| 914 | if (!map) |
| 915 | return FALSE; |
| 916 | pango_font_map_list_families(map, &families, &nfamilies); |
| 917 | #else |
| 918 | pango_context_list_families(ctx, &families, &nfamilies); |
| 919 | #endif |
| 920 | |
| 921 | matched = FALSE; |
| 922 | for (i = 0; i < nfamilies; i++) { |
| 923 | if (!g_ascii_strcasecmp(pango_font_family_get_name(families[i]), |
| 924 | pango_font_description_get_family(desc))) { |
| 925 | matched = TRUE; |
| 926 | break; |
| 927 | } |
| 928 | } |
| 929 | g_free(families); |
| 930 | |
| 931 | return matched; |
| 932 | } |
| 933 | |
| 934 | static unifont *pangofont_create_internal(GtkWidget *widget, |
| 935 | PangoContext *ctx, |
| 936 | PangoFontDescription *desc, |
| 937 | int wide, int bold, |
| 938 | int shadowoffset, int shadowalways) |
| 939 | { |
| 940 | struct pangofont *pfont; |
| 941 | #ifndef PANGO_PRE_1POINT6 |
| 942 | PangoFontMap *map; |
| 943 | #endif |
| 944 | PangoFontset *fset; |
| 945 | PangoFontMetrics *metrics; |
| 946 | |
| 947 | #ifndef PANGO_PRE_1POINT6 |
| 948 | map = pango_context_get_font_map(ctx); |
| 949 | if (!map) { |
| 950 | pango_font_description_free(desc); |
| 951 | return NULL; |
| 952 | } |
| 953 | fset = pango_font_map_load_fontset(map, ctx, desc, |
| 954 | pango_context_get_language(ctx)); |
| 955 | #else |
| 956 | fset = pango_context_load_fontset(ctx, desc, |
| 957 | pango_context_get_language(ctx)); |
| 958 | #endif |
| 959 | if (!fset) { |
| 960 | pango_font_description_free(desc); |
| 961 | return NULL; |
| 962 | } |
| 963 | metrics = pango_fontset_get_metrics(fset); |
| 964 | if (!metrics || |
| 965 | pango_font_metrics_get_approximate_digit_width(metrics) == 0) { |
| 966 | pango_font_description_free(desc); |
| 967 | g_object_unref(fset); |
| 968 | return NULL; |
| 969 | } |
| 970 | |
| 971 | pfont = snew(struct pangofont); |
| 972 | pfont->u.vt = &pangofont_vtable; |
| 973 | pfont->u.width = |
| 974 | PANGO_PIXELS(pango_font_metrics_get_approximate_digit_width(metrics)); |
| 975 | pfont->u.ascent = PANGO_PIXELS(pango_font_metrics_get_ascent(metrics)); |
| 976 | pfont->u.descent = PANGO_PIXELS(pango_font_metrics_get_descent(metrics)); |
| 977 | pfont->u.height = pfont->u.ascent + pfont->u.descent; |
| 978 | pfont->u.want_fallback = FALSE; |
| 979 | /* The Pango API is hardwired to UTF-8 */ |
| 980 | pfont->u.public_charset = CS_UTF8; |
| 981 | pfont->desc = desc; |
| 982 | pfont->fset = fset; |
| 983 | pfont->widget = widget; |
| 984 | pfont->bold = bold; |
| 985 | pfont->shadowoffset = shadowoffset; |
| 986 | pfont->shadowalways = shadowalways; |
| 987 | |
| 988 | pango_font_metrics_unref(metrics); |
| 989 | |
| 990 | return (unifont *)pfont; |
| 991 | } |
| 992 | |
| 993 | static unifont *pangofont_create(GtkWidget *widget, const char *name, |
| 994 | int wide, int bold, |
| 995 | int shadowoffset, int shadowalways) |
| 996 | { |
| 997 | PangoContext *ctx; |
| 998 | PangoFontDescription *desc; |
| 999 | |
| 1000 | desc = pango_font_description_from_string(name); |
| 1001 | if (!desc) |
| 1002 | return NULL; |
| 1003 | ctx = gtk_widget_get_pango_context(widget); |
| 1004 | if (!ctx) { |
| 1005 | pango_font_description_free(desc); |
| 1006 | return NULL; |
| 1007 | } |
| 1008 | if (!pangofont_check_desc_makes_sense(ctx, desc)) { |
| 1009 | pango_font_description_free(desc); |
| 1010 | return NULL; |
| 1011 | } |
| 1012 | return pangofont_create_internal(widget, ctx, desc, wide, bold, |
| 1013 | shadowoffset, shadowalways); |
| 1014 | } |
| 1015 | |
| 1016 | static unifont *pangofont_create_fallback(GtkWidget *widget, int height, |
| 1017 | int wide, int bold, |
| 1018 | int shadowoffset, int shadowalways) |
| 1019 | { |
| 1020 | PangoContext *ctx; |
| 1021 | PangoFontDescription *desc; |
| 1022 | |
| 1023 | desc = pango_font_description_from_string("Monospace"); |
| 1024 | if (!desc) |
| 1025 | return NULL; |
| 1026 | ctx = gtk_widget_get_pango_context(widget); |
| 1027 | if (!ctx) { |
| 1028 | pango_font_description_free(desc); |
| 1029 | return NULL; |
| 1030 | } |
| 1031 | pango_font_description_set_absolute_size(desc, height * PANGO_SCALE); |
| 1032 | return pangofont_create_internal(widget, ctx, desc, wide, bold, |
| 1033 | shadowoffset, shadowalways); |
| 1034 | } |
| 1035 | |
| 1036 | static void pangofont_destroy(unifont *font) |
| 1037 | { |
| 1038 | struct pangofont *pfont = (struct pangofont *)font; |
| 1039 | pango_font_description_free(pfont->desc); |
| 1040 | g_object_unref(pfont->fset); |
| 1041 | sfree(font); |
| 1042 | } |
| 1043 | |
| 1044 | static int pangofont_has_glyph(unifont *font, wchar_t glyph) |
| 1045 | { |
| 1046 | /* Pango implements font fallback, so assume it has everything */ |
| 1047 | return TRUE; |
| 1048 | } |
| 1049 | |
| 1050 | static void pangofont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font, |
| 1051 | int x, int y, const wchar_t *string, int len, |
| 1052 | int wide, int bold, int cellwidth) |
| 1053 | { |
| 1054 | struct pangofont *pfont = (struct pangofont *)font; |
| 1055 | PangoLayout *layout; |
| 1056 | PangoRectangle rect; |
| 1057 | char *utfstring, *utfptr; |
| 1058 | int utflen; |
| 1059 | int shadowbold = FALSE; |
| 1060 | |
| 1061 | if (wide) |
| 1062 | cellwidth *= 2; |
| 1063 | |
| 1064 | y -= pfont->u.ascent; |
| 1065 | |
| 1066 | layout = pango_layout_new(gtk_widget_get_pango_context(pfont->widget)); |
| 1067 | pango_layout_set_font_description(layout, pfont->desc); |
| 1068 | if (bold > pfont->bold) { |
| 1069 | if (pfont->shadowalways) |
| 1070 | shadowbold = TRUE; |
| 1071 | else { |
| 1072 | PangoFontDescription *desc2 = |
| 1073 | pango_font_description_copy_static(pfont->desc); |
| 1074 | pango_font_description_set_weight(desc2, PANGO_WEIGHT_BOLD); |
| 1075 | pango_layout_set_font_description(layout, desc2); |
| 1076 | } |
| 1077 | } |
| 1078 | |
| 1079 | /* |
| 1080 | * Pango always expects UTF-8, so convert the input wide character |
| 1081 | * string to UTF-8. |
| 1082 | */ |
| 1083 | utfstring = snewn(len*6+1, char); /* UTF-8 has max 6 bytes/char */ |
| 1084 | utflen = wc_to_mb(CS_UTF8, 0, string, len, |
| 1085 | utfstring, len*6+1, ".", NULL, NULL); |
| 1086 | |
| 1087 | utfptr = utfstring; |
| 1088 | while (utflen > 0) { |
| 1089 | int clen, n; |
| 1090 | |
| 1091 | /* |
| 1092 | * We want to display every character from this string in |
| 1093 | * the centre of its own character cell. In the worst case, |
| 1094 | * this requires a separate text-drawing call for each |
| 1095 | * character; but in the common case where the font is |
| 1096 | * properly fixed-width, we can draw many characters in one |
| 1097 | * go which is much faster. |
| 1098 | * |
| 1099 | * This still isn't really ideal. If you look at what |
| 1100 | * happens in the X protocol as a result of all of this, you |
| 1101 | * find - naturally enough - that each call to |
| 1102 | * gdk_draw_layout() generates a separate set of X RENDER |
| 1103 | * operations involving creating a picture, setting a clip |
| 1104 | * rectangle, doing some drawing and undoing the whole lot. |
| 1105 | * In an ideal world, we should _always_ be able to turn the |
| 1106 | * contents of this loop into a single RenderCompositeGlyphs |
| 1107 | * operation which internally specifies inter-character |
| 1108 | * deltas to get the spacing right, which would give us full |
| 1109 | * speed _even_ in the worst case of a non-fixed-width font. |
| 1110 | * However, Pango's architecture and documentation are so |
| 1111 | * unhelpful that I have no idea how if at all to persuade |
| 1112 | * them to do that. |
| 1113 | */ |
| 1114 | |
| 1115 | /* |
| 1116 | * Start by extracting a single UTF-8 character from the |
| 1117 | * string. |
| 1118 | */ |
| 1119 | clen = 1; |
| 1120 | while (clen < utflen && |
| 1121 | (unsigned char)utfptr[clen] >= 0x80 && |
| 1122 | (unsigned char)utfptr[clen] < 0xC0) |
| 1123 | clen++; |
| 1124 | n = 1; |
| 1125 | |
| 1126 | /* |
| 1127 | * If it's a right-to-left character, we must display it on |
| 1128 | * its own, to stop Pango helpfully re-reversing our already |
| 1129 | * reversed text. |
| 1130 | */ |
| 1131 | if (!is_rtl(string[0])) { |
| 1132 | |
| 1133 | /* |
| 1134 | * See if that character has the width we expect. |
| 1135 | */ |
| 1136 | pango_layout_set_text(layout, utfptr, clen); |
| 1137 | pango_layout_get_pixel_extents(layout, NULL, &rect); |
| 1138 | |
| 1139 | if (rect.width == cellwidth) { |
| 1140 | /* |
| 1141 | * Try extracting more characters, for as long as they |
| 1142 | * stay well-behaved. |
| 1143 | */ |
| 1144 | while (clen < utflen) { |
| 1145 | int oldclen = clen; |
| 1146 | clen++; /* skip UTF-8 introducer byte */ |
| 1147 | while (clen < utflen && |
| 1148 | (unsigned char)utfptr[clen] >= 0x80 && |
| 1149 | (unsigned char)utfptr[clen] < 0xC0) |
| 1150 | clen++; |
| 1151 | n++; |
| 1152 | pango_layout_set_text(layout, utfptr, clen); |
| 1153 | pango_layout_get_pixel_extents(layout, NULL, &rect); |
| 1154 | if (rect.width != n * cellwidth) { |
| 1155 | clen = oldclen; |
| 1156 | n--; |
| 1157 | break; |
| 1158 | } |
| 1159 | } |
| 1160 | } |
| 1161 | } |
| 1162 | |
| 1163 | pango_layout_set_text(layout, utfptr, clen); |
| 1164 | pango_layout_get_pixel_extents(layout, NULL, &rect); |
| 1165 | gdk_draw_layout(target, gc, x + (n*cellwidth - rect.width)/2, |
| 1166 | y + (pfont->u.height - rect.height)/2, layout); |
| 1167 | if (shadowbold) |
| 1168 | gdk_draw_layout(target, gc, x + (n*cellwidth - rect.width)/2 + pfont->shadowoffset, |
| 1169 | y + (pfont->u.height - rect.height)/2, layout); |
| 1170 | |
| 1171 | utflen -= clen; |
| 1172 | utfptr += clen; |
| 1173 | string += n; |
| 1174 | x += n * cellwidth; |
| 1175 | } |
| 1176 | |
| 1177 | sfree(utfstring); |
| 1178 | |
| 1179 | g_object_unref(layout); |
| 1180 | } |
| 1181 | |
| 1182 | /* |
| 1183 | * Dummy size value to be used when converting a |
| 1184 | * PangoFontDescription of a scalable font to a string for |
| 1185 | * internal use. |
| 1186 | */ |
| 1187 | #define PANGO_DUMMY_SIZE 12 |
| 1188 | |
| 1189 | static void pangofont_enum_fonts(GtkWidget *widget, fontsel_add_entry callback, |
| 1190 | void *callback_ctx) |
| 1191 | { |
| 1192 | PangoContext *ctx; |
| 1193 | #ifndef PANGO_PRE_1POINT6 |
| 1194 | PangoFontMap *map; |
| 1195 | #endif |
| 1196 | PangoFontFamily **families; |
| 1197 | int i, nfamilies; |
| 1198 | |
| 1199 | ctx = gtk_widget_get_pango_context(widget); |
| 1200 | if (!ctx) |
| 1201 | return; |
| 1202 | |
| 1203 | /* |
| 1204 | * Ask Pango for a list of font families, and iterate through |
| 1205 | * them. |
| 1206 | */ |
| 1207 | #ifndef PANGO_PRE_1POINT6 |
| 1208 | map = pango_context_get_font_map(ctx); |
| 1209 | if (!map) |
| 1210 | return; |
| 1211 | pango_font_map_list_families(map, &families, &nfamilies); |
| 1212 | #else |
| 1213 | pango_context_list_families(ctx, &families, &nfamilies); |
| 1214 | #endif |
| 1215 | for (i = 0; i < nfamilies; i++) { |
| 1216 | PangoFontFamily *family = families[i]; |
| 1217 | const char *familyname; |
| 1218 | int flags; |
| 1219 | PangoFontFace **faces; |
| 1220 | int j, nfaces; |
| 1221 | |
| 1222 | /* |
| 1223 | * Set up our flags for this font family, and get the name |
| 1224 | * string. |
| 1225 | */ |
| 1226 | flags = FONTFLAG_CLIENTSIDE; |
| 1227 | #ifndef PANGO_PRE_1POINT4 |
| 1228 | /* |
| 1229 | * In very early versions of Pango, we can't tell |
| 1230 | * monospaced fonts from non-monospaced. |
| 1231 | */ |
| 1232 | if (!pango_font_family_is_monospace(family)) |
| 1233 | flags |= FONTFLAG_NONMONOSPACED; |
| 1234 | #endif |
| 1235 | familyname = pango_font_family_get_name(family); |
| 1236 | |
| 1237 | /* |
| 1238 | * Go through the available font faces in this family. |
| 1239 | */ |
| 1240 | pango_font_family_list_faces(family, &faces, &nfaces); |
| 1241 | for (j = 0; j < nfaces; j++) { |
| 1242 | PangoFontFace *face = faces[j]; |
| 1243 | PangoFontDescription *desc; |
| 1244 | const char *facename; |
| 1245 | int *sizes; |
| 1246 | int k, nsizes, dummysize; |
| 1247 | |
| 1248 | /* |
| 1249 | * Get the face name string. |
| 1250 | */ |
| 1251 | facename = pango_font_face_get_face_name(face); |
| 1252 | |
| 1253 | /* |
| 1254 | * Set up a font description with what we've got so |
| 1255 | * far. We'll fill in the size field manually and then |
| 1256 | * call pango_font_description_to_string() to give the |
| 1257 | * full real name of the specific font. |
| 1258 | */ |
| 1259 | desc = pango_font_face_describe(face); |
| 1260 | |
| 1261 | /* |
| 1262 | * See if this font has a list of specific sizes. |
| 1263 | */ |
| 1264 | #ifndef PANGO_PRE_1POINT4 |
| 1265 | pango_font_face_list_sizes(face, &sizes, &nsizes); |
| 1266 | #else |
| 1267 | /* |
| 1268 | * In early versions of Pango, that call wasn't |
| 1269 | * supported; we just have to assume everything is |
| 1270 | * scalable. |
| 1271 | */ |
| 1272 | sizes = NULL; |
| 1273 | #endif |
| 1274 | if (!sizes) { |
| 1275 | /* |
| 1276 | * Write a single entry with a dummy size. |
| 1277 | */ |
| 1278 | dummysize = PANGO_DUMMY_SIZE * PANGO_SCALE; |
| 1279 | sizes = &dummysize; |
| 1280 | nsizes = 1; |
| 1281 | } |
| 1282 | |
| 1283 | /* |
| 1284 | * If so, go through them one by one. |
| 1285 | */ |
| 1286 | for (k = 0; k < nsizes; k++) { |
| 1287 | char *fullname; |
| 1288 | char stylekey[128]; |
| 1289 | |
| 1290 | pango_font_description_set_size(desc, sizes[k]); |
| 1291 | |
| 1292 | fullname = pango_font_description_to_string(desc); |
| 1293 | |
| 1294 | /* |
| 1295 | * Construct the sorting key for font styles. |
| 1296 | */ |
| 1297 | { |
| 1298 | char *p = stylekey; |
| 1299 | int n; |
| 1300 | |
| 1301 | n = pango_font_description_get_weight(desc); |
| 1302 | /* Weight: normal, then lighter, then bolder */ |
| 1303 | if (n <= PANGO_WEIGHT_NORMAL) |
| 1304 | n = PANGO_WEIGHT_NORMAL - n; |
| 1305 | p += sprintf(p, "%4d", n); |
| 1306 | |
| 1307 | n = pango_font_description_get_style(desc); |
| 1308 | p += sprintf(p, " %2d", n); |
| 1309 | |
| 1310 | n = pango_font_description_get_stretch(desc); |
| 1311 | /* Stretch: closer to normal sorts earlier */ |
| 1312 | n = 2 * abs(PANGO_STRETCH_NORMAL - n) + |
| 1313 | (n < PANGO_STRETCH_NORMAL); |
| 1314 | p += sprintf(p, " %2d", n); |
| 1315 | |
| 1316 | n = pango_font_description_get_variant(desc); |
| 1317 | p += sprintf(p, " %2d", n); |
| 1318 | |
| 1319 | } |
| 1320 | |
| 1321 | /* |
| 1322 | * Got everything. Hand off to the callback. |
| 1323 | * (The charset string is NULL, because only |
| 1324 | * server-side X fonts use it.) |
| 1325 | */ |
| 1326 | callback(callback_ctx, fullname, familyname, NULL, facename, |
| 1327 | stylekey, |
| 1328 | (sizes == &dummysize ? 0 : PANGO_PIXELS(sizes[k])), |
| 1329 | flags, &pangofont_vtable); |
| 1330 | |
| 1331 | g_free(fullname); |
| 1332 | } |
| 1333 | if (sizes != &dummysize) |
| 1334 | g_free(sizes); |
| 1335 | |
| 1336 | pango_font_description_free(desc); |
| 1337 | } |
| 1338 | g_free(faces); |
| 1339 | } |
| 1340 | g_free(families); |
| 1341 | } |
| 1342 | |
| 1343 | static char *pangofont_canonify_fontname(GtkWidget *widget, const char *name, |
| 1344 | int *size, int *flags, |
| 1345 | int resolve_aliases) |
| 1346 | { |
| 1347 | /* |
| 1348 | * When given a Pango font name to try to make sense of for a |
| 1349 | * font selector, we must normalise it to PANGO_DUMMY_SIZE and |
| 1350 | * extract its original size (in pixels) into the `size' field. |
| 1351 | */ |
| 1352 | PangoContext *ctx; |
| 1353 | #ifndef PANGO_PRE_1POINT6 |
| 1354 | PangoFontMap *map; |
| 1355 | #endif |
| 1356 | PangoFontDescription *desc; |
| 1357 | PangoFontset *fset; |
| 1358 | PangoFontMetrics *metrics; |
| 1359 | char *newname, *retname; |
| 1360 | |
| 1361 | desc = pango_font_description_from_string(name); |
| 1362 | if (!desc) |
| 1363 | return NULL; |
| 1364 | ctx = gtk_widget_get_pango_context(widget); |
| 1365 | if (!ctx) { |
| 1366 | pango_font_description_free(desc); |
| 1367 | return NULL; |
| 1368 | } |
| 1369 | if (!pangofont_check_desc_makes_sense(ctx, desc)) { |
| 1370 | pango_font_description_free(desc); |
| 1371 | return NULL; |
| 1372 | } |
| 1373 | #ifndef PANGO_PRE_1POINT6 |
| 1374 | map = pango_context_get_font_map(ctx); |
| 1375 | if (!map) { |
| 1376 | pango_font_description_free(desc); |
| 1377 | return NULL; |
| 1378 | } |
| 1379 | fset = pango_font_map_load_fontset(map, ctx, desc, |
| 1380 | pango_context_get_language(ctx)); |
| 1381 | #else |
| 1382 | fset = pango_context_load_fontset(ctx, desc, |
| 1383 | pango_context_get_language(ctx)); |
| 1384 | #endif |
| 1385 | if (!fset) { |
| 1386 | pango_font_description_free(desc); |
| 1387 | return NULL; |
| 1388 | } |
| 1389 | metrics = pango_fontset_get_metrics(fset); |
| 1390 | if (!metrics || |
| 1391 | pango_font_metrics_get_approximate_digit_width(metrics) == 0) { |
| 1392 | pango_font_description_free(desc); |
| 1393 | g_object_unref(fset); |
| 1394 | return NULL; |
| 1395 | } |
| 1396 | |
| 1397 | *size = PANGO_PIXELS(pango_font_description_get_size(desc)); |
| 1398 | *flags = FONTFLAG_CLIENTSIDE; |
| 1399 | pango_font_description_set_size(desc, PANGO_DUMMY_SIZE * PANGO_SCALE); |
| 1400 | newname = pango_font_description_to_string(desc); |
| 1401 | retname = dupstr(newname); |
| 1402 | g_free(newname); |
| 1403 | |
| 1404 | pango_font_metrics_unref(metrics); |
| 1405 | pango_font_description_free(desc); |
| 1406 | g_object_unref(fset); |
| 1407 | |
| 1408 | return retname; |
| 1409 | } |
| 1410 | |
| 1411 | static char *pangofont_scale_fontname(GtkWidget *widget, const char *name, |
| 1412 | int size) |
| 1413 | { |
| 1414 | PangoFontDescription *desc; |
| 1415 | char *newname, *retname; |
| 1416 | |
| 1417 | desc = pango_font_description_from_string(name); |
| 1418 | if (!desc) |
| 1419 | return NULL; |
| 1420 | pango_font_description_set_size(desc, size * PANGO_SCALE); |
| 1421 | newname = pango_font_description_to_string(desc); |
| 1422 | retname = dupstr(newname); |
| 1423 | g_free(newname); |
| 1424 | pango_font_description_free(desc); |
| 1425 | |
| 1426 | return retname; |
| 1427 | } |
| 1428 | |
| 1429 | #endif /* GTK_CHECK_VERSION(2,0,0) */ |
| 1430 | |
| 1431 | /* ---------------------------------------------------------------------- |
| 1432 | * Outermost functions which do the vtable dispatch. |
| 1433 | */ |
| 1434 | |
| 1435 | /* |
| 1436 | * Complete list of font-type subclasses. Listed in preference |
| 1437 | * order for unifont_create(). (That is, in the extremely unlikely |
| 1438 | * event that the same font name is valid as both a Pango and an |
| 1439 | * X11 font, it will be interpreted as the former in the absence |
| 1440 | * of an explicit type-disambiguating prefix.) |
| 1441 | * |
| 1442 | * The 'multifont' subclass is omitted here, as discussed above. |
| 1443 | */ |
| 1444 | static const struct unifont_vtable *unifont_types[] = { |
| 1445 | #if GTK_CHECK_VERSION(2,0,0) |
| 1446 | &pangofont_vtable, |
| 1447 | #endif |
| 1448 | &x11font_vtable, |
| 1449 | }; |
| 1450 | |
| 1451 | /* |
| 1452 | * Function which takes a font name and processes the optional |
| 1453 | * scheme prefix. Returns the tail of the font name suitable for |
| 1454 | * passing to individual font scheme functions, and also provides |
| 1455 | * a subrange of the unifont_types[] array above. |
| 1456 | * |
| 1457 | * The return values `start' and `end' denote a half-open interval |
| 1458 | * in unifont_types[]; that is, the correct way to iterate over |
| 1459 | * them is |
| 1460 | * |
| 1461 | * for (i = start; i < end; i++) {...} |
| 1462 | */ |
| 1463 | static const char *unifont_do_prefix(const char *name, int *start, int *end) |
| 1464 | { |
| 1465 | int colonpos = strcspn(name, ":"); |
| 1466 | int i; |
| 1467 | |
| 1468 | if (name[colonpos]) { |
| 1469 | /* |
| 1470 | * There's a colon prefix on the font name. Use it to work |
| 1471 | * out which subclass to use. |
| 1472 | */ |
| 1473 | for (i = 0; i < lenof(unifont_types); i++) { |
| 1474 | if (strlen(unifont_types[i]->prefix) == colonpos && |
| 1475 | !strncmp(unifont_types[i]->prefix, name, colonpos)) { |
| 1476 | *start = i; |
| 1477 | *end = i+1; |
| 1478 | return name + colonpos + 1; |
| 1479 | } |
| 1480 | } |
| 1481 | /* |
| 1482 | * None matched, so return an empty scheme list to prevent |
| 1483 | * any scheme from being called at all. |
| 1484 | */ |
| 1485 | *start = *end = 0; |
| 1486 | return name + colonpos + 1; |
| 1487 | } else { |
| 1488 | /* |
| 1489 | * No colon prefix, so just use all the subclasses. |
| 1490 | */ |
| 1491 | *start = 0; |
| 1492 | *end = lenof(unifont_types); |
| 1493 | return name; |
| 1494 | } |
| 1495 | } |
| 1496 | |
| 1497 | unifont *unifont_create(GtkWidget *widget, const char *name, int wide, |
| 1498 | int bold, int shadowoffset, int shadowalways) |
| 1499 | { |
| 1500 | int i, start, end; |
| 1501 | |
| 1502 | name = unifont_do_prefix(name, &start, &end); |
| 1503 | |
| 1504 | for (i = start; i < end; i++) { |
| 1505 | unifont *ret = unifont_types[i]->create(widget, name, wide, bold, |
| 1506 | shadowoffset, shadowalways); |
| 1507 | if (ret) |
| 1508 | return ret; |
| 1509 | } |
| 1510 | return NULL; /* font not found in any scheme */ |
| 1511 | } |
| 1512 | |
| 1513 | void unifont_destroy(unifont *font) |
| 1514 | { |
| 1515 | font->vt->destroy(font); |
| 1516 | } |
| 1517 | |
| 1518 | void unifont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font, |
| 1519 | int x, int y, const wchar_t *string, int len, |
| 1520 | int wide, int bold, int cellwidth) |
| 1521 | { |
| 1522 | font->vt->draw_text(target, gc, font, x, y, string, len, |
| 1523 | wide, bold, cellwidth); |
| 1524 | } |
| 1525 | |
| 1526 | /* ---------------------------------------------------------------------- |
| 1527 | * Multiple-font wrapper. This is a type of unifont which encapsulates |
| 1528 | * up to two other unifonts, permitting missing glyphs in the main |
| 1529 | * font to be filled in by a fallback font. |
| 1530 | * |
| 1531 | * This is a type of unifont just like the previous two, but it has a |
| 1532 | * separate constructor which is manually called by the client, so it |
| 1533 | * doesn't appear in the list of available font types enumerated by |
| 1534 | * unifont_create. This means it's not used by unifontsel either, so |
| 1535 | * it doesn't need to support any methods except draw_text and |
| 1536 | * destroy. |
| 1537 | */ |
| 1538 | |
| 1539 | static void multifont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font, |
| 1540 | int x, int y, const wchar_t *string, int len, |
| 1541 | int wide, int bold, int cellwidth); |
| 1542 | static void multifont_destroy(unifont *font); |
| 1543 | |
| 1544 | struct multifont { |
| 1545 | struct unifont u; |
| 1546 | unifont *main; |
| 1547 | unifont *fallback; |
| 1548 | }; |
| 1549 | |
| 1550 | static const struct unifont_vtable multifont_vtable = { |
| 1551 | NULL, /* creation is done specially */ |
| 1552 | NULL, |
| 1553 | multifont_destroy, |
| 1554 | NULL, |
| 1555 | multifont_draw_text, |
| 1556 | NULL, |
| 1557 | NULL, |
| 1558 | NULL, |
| 1559 | "client", |
| 1560 | }; |
| 1561 | |
| 1562 | unifont *multifont_create(GtkWidget *widget, const char *name, |
| 1563 | int wide, int bold, |
| 1564 | int shadowoffset, int shadowalways) |
| 1565 | { |
| 1566 | int i; |
| 1567 | unifont *font, *fallback; |
| 1568 | struct multifont *mfont; |
| 1569 | |
| 1570 | font = unifont_create(widget, name, wide, bold, |
| 1571 | shadowoffset, shadowalways); |
| 1572 | if (!font) |
| 1573 | return NULL; |
| 1574 | |
| 1575 | fallback = NULL; |
| 1576 | if (font->want_fallback) { |
| 1577 | for (i = 0; i < lenof(unifont_types); i++) { |
| 1578 | if (unifont_types[i]->create_fallback) { |
| 1579 | fallback = unifont_types[i]->create_fallback |
| 1580 | (widget, font->height, wide, bold, |
| 1581 | shadowoffset, shadowalways); |
| 1582 | if (fallback) |
| 1583 | break; |
| 1584 | } |
| 1585 | } |
| 1586 | } |
| 1587 | |
| 1588 | /* |
| 1589 | * Construct our multifont. Public members are all copied from the |
| 1590 | * primary font we're wrapping. |
| 1591 | */ |
| 1592 | mfont = snew(struct multifont); |
| 1593 | mfont->u.vt = &multifont_vtable; |
| 1594 | mfont->u.width = font->width; |
| 1595 | mfont->u.ascent = font->ascent; |
| 1596 | mfont->u.descent = font->descent; |
| 1597 | mfont->u.height = font->height; |
| 1598 | mfont->u.public_charset = font->public_charset; |
| 1599 | mfont->u.want_fallback = FALSE; /* shouldn't be needed, but just in case */ |
| 1600 | mfont->main = font; |
| 1601 | mfont->fallback = fallback; |
| 1602 | |
| 1603 | return (unifont *)mfont; |
| 1604 | } |
| 1605 | |
| 1606 | static void multifont_destroy(unifont *font) |
| 1607 | { |
| 1608 | struct multifont *mfont = (struct multifont *)font; |
| 1609 | unifont_destroy(mfont->main); |
| 1610 | if (mfont->fallback) |
| 1611 | unifont_destroy(mfont->fallback); |
| 1612 | sfree(font); |
| 1613 | } |
| 1614 | |
| 1615 | static void multifont_draw_text(GdkDrawable *target, GdkGC *gc, unifont *font, |
| 1616 | int x, int y, const wchar_t *string, int len, |
| 1617 | int wide, int bold, int cellwidth) |
| 1618 | { |
| 1619 | struct multifont *mfont = (struct multifont *)font; |
| 1620 | int ok, i; |
| 1621 | |
| 1622 | while (len > 0) { |
| 1623 | /* |
| 1624 | * Find a maximal sequence of characters which are, or are |
| 1625 | * not, supported by our main font. |
| 1626 | */ |
| 1627 | ok = mfont->main->vt->has_glyph(mfont->main, string[0]); |
| 1628 | for (i = 1; |
| 1629 | i < len && |
| 1630 | !mfont->main->vt->has_glyph(mfont->main, string[i]) == !ok; |
| 1631 | i++); |
| 1632 | |
| 1633 | /* |
| 1634 | * Now display it. |
| 1635 | */ |
| 1636 | unifont_draw_text(target, gc, ok ? mfont->main : mfont->fallback, |
| 1637 | x, y, string, i, wide, bold, cellwidth); |
| 1638 | string += i; |
| 1639 | len -= i; |
| 1640 | x += i * cellwidth; |
| 1641 | } |
| 1642 | } |
| 1643 | |
| 1644 | #if GTK_CHECK_VERSION(2,0,0) |
| 1645 | |
| 1646 | /* ---------------------------------------------------------------------- |
| 1647 | * Implementation of a unified font selector. Used on GTK 2 only; |
| 1648 | * for GTK 1 we still use the standard font selector. |
| 1649 | */ |
| 1650 | |
| 1651 | typedef struct fontinfo fontinfo; |
| 1652 | |
| 1653 | typedef struct unifontsel_internal { |
| 1654 | /* This must be the structure's first element, for cross-casting */ |
| 1655 | unifontsel u; |
| 1656 | GtkListStore *family_model, *style_model, *size_model; |
| 1657 | GtkWidget *family_list, *style_list, *size_entry, *size_list; |
| 1658 | GtkWidget *filter_buttons[4]; |
| 1659 | GtkWidget *preview_area; |
| 1660 | GdkPixmap *preview_pixmap; |
| 1661 | int preview_width, preview_height; |
| 1662 | GdkColor preview_fg, preview_bg; |
| 1663 | int filter_flags; |
| 1664 | tree234 *fonts_by_realname, *fonts_by_selorder; |
| 1665 | fontinfo *selected; |
| 1666 | int selsize, intendedsize; |
| 1667 | int inhibit_response; /* inhibit callbacks when we change GUI controls */ |
| 1668 | } unifontsel_internal; |
| 1669 | |
| 1670 | /* |
| 1671 | * The structure held in the tree234s. All the string members are |
| 1672 | * part of the same allocated area, so don't need freeing |
| 1673 | * separately. |
| 1674 | */ |
| 1675 | struct fontinfo { |
| 1676 | char *realname; |
| 1677 | char *family, *charset, *style, *stylekey; |
| 1678 | int size, flags; |
| 1679 | /* |
| 1680 | * Fallback sorting key, to permit multiple identical entries |
| 1681 | * to exist in the selorder tree. |
| 1682 | */ |
| 1683 | int index; |
| 1684 | /* |
| 1685 | * Indices mapping fontinfo structures to indices in the list |
| 1686 | * boxes. sizeindex is irrelevant if the font is scalable |
| 1687 | * (size==0). |
| 1688 | */ |
| 1689 | int familyindex, styleindex, sizeindex; |
| 1690 | /* |
| 1691 | * The class of font. |
| 1692 | */ |
| 1693 | const struct unifont_vtable *fontclass; |
| 1694 | }; |
| 1695 | |
| 1696 | struct fontinfo_realname_find { |
| 1697 | const char *realname; |
| 1698 | int flags; |
| 1699 | }; |
| 1700 | |
| 1701 | static int strnullcasecmp(const char *a, const char *b) |
| 1702 | { |
| 1703 | int i; |
| 1704 | |
| 1705 | /* |
| 1706 | * If exactly one of the inputs is NULL, it compares before |
| 1707 | * the other one. |
| 1708 | */ |
| 1709 | if ((i = (!b) - (!a)) != 0) |
| 1710 | return i; |
| 1711 | |
| 1712 | /* |
| 1713 | * NULL compares equal. |
| 1714 | */ |
| 1715 | if (!a) |
| 1716 | return 0; |
| 1717 | |
| 1718 | /* |
| 1719 | * Otherwise, ordinary strcasecmp. |
| 1720 | */ |
| 1721 | return g_ascii_strcasecmp(a, b); |
| 1722 | } |
| 1723 | |
| 1724 | static int fontinfo_realname_compare(void *av, void *bv) |
| 1725 | { |
| 1726 | fontinfo *a = (fontinfo *)av; |
| 1727 | fontinfo *b = (fontinfo *)bv; |
| 1728 | int i; |
| 1729 | |
| 1730 | if ((i = strnullcasecmp(a->realname, b->realname)) != 0) |
| 1731 | return i; |
| 1732 | if ((a->flags & FONTFLAG_SORT_MASK) != (b->flags & FONTFLAG_SORT_MASK)) |
| 1733 | return ((a->flags & FONTFLAG_SORT_MASK) < |
| 1734 | (b->flags & FONTFLAG_SORT_MASK) ? -1 : +1); |
| 1735 | return 0; |
| 1736 | } |
| 1737 | |
| 1738 | static int fontinfo_realname_find(void *av, void *bv) |
| 1739 | { |
| 1740 | struct fontinfo_realname_find *a = (struct fontinfo_realname_find *)av; |
| 1741 | fontinfo *b = (fontinfo *)bv; |
| 1742 | int i; |
| 1743 | |
| 1744 | if ((i = strnullcasecmp(a->realname, b->realname)) != 0) |
| 1745 | return i; |
| 1746 | if ((a->flags & FONTFLAG_SORT_MASK) != (b->flags & FONTFLAG_SORT_MASK)) |
| 1747 | return ((a->flags & FONTFLAG_SORT_MASK) < |
| 1748 | (b->flags & FONTFLAG_SORT_MASK) ? -1 : +1); |
| 1749 | return 0; |
| 1750 | } |
| 1751 | |
| 1752 | static int fontinfo_selorder_compare(void *av, void *bv) |
| 1753 | { |
| 1754 | fontinfo *a = (fontinfo *)av; |
| 1755 | fontinfo *b = (fontinfo *)bv; |
| 1756 | int i; |
| 1757 | if ((i = strnullcasecmp(a->family, b->family)) != 0) |
| 1758 | return i; |
| 1759 | /* |
| 1760 | * Font class comes immediately after family, so that fonts |
| 1761 | * from different classes with the same family |
| 1762 | */ |
| 1763 | if ((a->flags & FONTFLAG_SORT_MASK) != (b->flags & FONTFLAG_SORT_MASK)) |
| 1764 | return ((a->flags & FONTFLAG_SORT_MASK) < |
| 1765 | (b->flags & FONTFLAG_SORT_MASK) ? -1 : +1); |
| 1766 | if ((i = strnullcasecmp(a->charset, b->charset)) != 0) |
| 1767 | return i; |
| 1768 | if ((i = strnullcasecmp(a->stylekey, b->stylekey)) != 0) |
| 1769 | return i; |
| 1770 | if ((i = strnullcasecmp(a->style, b->style)) != 0) |
| 1771 | return i; |
| 1772 | if (a->size != b->size) |
| 1773 | return (a->size < b->size ? -1 : +1); |
| 1774 | if (a->index != b->index) |
| 1775 | return (a->index < b->index ? -1 : +1); |
| 1776 | return 0; |
| 1777 | } |
| 1778 | |
| 1779 | static void unifontsel_deselect(unifontsel_internal *fs) |
| 1780 | { |
| 1781 | fs->selected = NULL; |
| 1782 | gtk_list_store_clear(fs->style_model); |
| 1783 | gtk_list_store_clear(fs->size_model); |
| 1784 | gtk_widget_set_sensitive(fs->u.ok_button, FALSE); |
| 1785 | gtk_widget_set_sensitive(fs->size_entry, FALSE); |
| 1786 | } |
| 1787 | |
| 1788 | static void unifontsel_setup_familylist(unifontsel_internal *fs) |
| 1789 | { |
| 1790 | GtkTreeIter iter; |
| 1791 | int i, listindex, minpos = -1, maxpos = -1; |
| 1792 | char *currfamily = NULL; |
| 1793 | int currflags = -1; |
| 1794 | fontinfo *info; |
| 1795 | |
| 1796 | gtk_list_store_clear(fs->family_model); |
| 1797 | listindex = 0; |
| 1798 | |
| 1799 | /* |
| 1800 | * Search through the font tree for anything matching our |
| 1801 | * current filter criteria. When we find one, add its font |
| 1802 | * name to the list box. |
| 1803 | */ |
| 1804 | for (i = 0 ;; i++) { |
| 1805 | info = (fontinfo *)index234(fs->fonts_by_selorder, i); |
| 1806 | /* |
| 1807 | * info may be NULL if we've just run off the end of the |
| 1808 | * tree. We must still do a processing pass in that |
| 1809 | * situation, in case we had an unfinished font record in |
| 1810 | * progress. |
| 1811 | */ |
| 1812 | if (info && (info->flags &~ fs->filter_flags)) { |
| 1813 | info->familyindex = -1; |
| 1814 | continue; /* we're filtering out this font */ |
| 1815 | } |
| 1816 | if (!info || strnullcasecmp(currfamily, info->family) || |
| 1817 | currflags != (info->flags & FONTFLAG_SORT_MASK)) { |
| 1818 | /* |
| 1819 | * We've either finished a family, or started a new |
| 1820 | * one, or both. |
| 1821 | */ |
| 1822 | if (currfamily) { |
| 1823 | gtk_list_store_append(fs->family_model, &iter); |
| 1824 | gtk_list_store_set(fs->family_model, &iter, |
| 1825 | 0, currfamily, 1, minpos, 2, maxpos+1, -1); |
| 1826 | listindex++; |
| 1827 | } |
| 1828 | if (info) { |
| 1829 | minpos = i; |
| 1830 | currfamily = info->family; |
| 1831 | currflags = info->flags & FONTFLAG_SORT_MASK; |
| 1832 | } |
| 1833 | } |
| 1834 | if (!info) |
| 1835 | break; /* now we're done */ |
| 1836 | info->familyindex = listindex; |
| 1837 | maxpos = i; |
| 1838 | } |
| 1839 | |
| 1840 | /* |
| 1841 | * If we've just filtered out the previously selected font, |
| 1842 | * deselect it thoroughly. |
| 1843 | */ |
| 1844 | if (fs->selected && fs->selected->familyindex < 0) |
| 1845 | unifontsel_deselect(fs); |
| 1846 | } |
| 1847 | |
| 1848 | static void unifontsel_setup_stylelist(unifontsel_internal *fs, |
| 1849 | int start, int end) |
| 1850 | { |
| 1851 | GtkTreeIter iter; |
| 1852 | int i, listindex, minpos = -1, maxpos = -1, started = FALSE; |
| 1853 | char *currcs = NULL, *currstyle = NULL; |
| 1854 | fontinfo *info; |
| 1855 | |
| 1856 | gtk_list_store_clear(fs->style_model); |
| 1857 | listindex = 0; |
| 1858 | started = FALSE; |
| 1859 | |
| 1860 | /* |
| 1861 | * Search through the font tree for anything matching our |
| 1862 | * current filter criteria. When we find one, add its charset |
| 1863 | * and/or style name to the list box. |
| 1864 | */ |
| 1865 | for (i = start; i <= end; i++) { |
| 1866 | if (i == end) |
| 1867 | info = NULL; |
| 1868 | else |
| 1869 | info = (fontinfo *)index234(fs->fonts_by_selorder, i); |
| 1870 | /* |
| 1871 | * info may be NULL if we've just run off the end of the |
| 1872 | * relevant data. We must still do a processing pass in |
| 1873 | * that situation, in case we had an unfinished font |
| 1874 | * record in progress. |
| 1875 | */ |
| 1876 | if (info && (info->flags &~ fs->filter_flags)) { |
| 1877 | info->styleindex = -1; |
| 1878 | continue; /* we're filtering out this font */ |
| 1879 | } |
| 1880 | if (!info || !started || strnullcasecmp(currcs, info->charset) || |
| 1881 | strnullcasecmp(currstyle, info->style)) { |
| 1882 | /* |
| 1883 | * We've either finished a style/charset, or started a |
| 1884 | * new one, or both. |
| 1885 | */ |
| 1886 | started = TRUE; |
| 1887 | if (currstyle) { |
| 1888 | gtk_list_store_append(fs->style_model, &iter); |
| 1889 | gtk_list_store_set(fs->style_model, &iter, |
| 1890 | 0, currstyle, 1, minpos, 2, maxpos+1, |
| 1891 | 3, TRUE, -1); |
| 1892 | listindex++; |
| 1893 | } |
| 1894 | if (info) { |
| 1895 | minpos = i; |
| 1896 | if (info->charset && strnullcasecmp(currcs, info->charset)) { |
| 1897 | gtk_list_store_append(fs->style_model, &iter); |
| 1898 | gtk_list_store_set(fs->style_model, &iter, |
| 1899 | 0, info->charset, 1, -1, 2, -1, |
| 1900 | 3, FALSE, -1); |
| 1901 | listindex++; |
| 1902 | } |
| 1903 | currcs = info->charset; |
| 1904 | currstyle = info->style; |
| 1905 | } |
| 1906 | } |
| 1907 | if (!info) |
| 1908 | break; /* now we're done */ |
| 1909 | info->styleindex = listindex; |
| 1910 | maxpos = i; |
| 1911 | } |
| 1912 | } |
| 1913 | |
| 1914 | static const int unifontsel_default_sizes[] = { 10, 12, 14, 16, 20, 24, 32 }; |
| 1915 | |
| 1916 | static void unifontsel_setup_sizelist(unifontsel_internal *fs, |
| 1917 | int start, int end) |
| 1918 | { |
| 1919 | GtkTreeIter iter; |
| 1920 | int i, listindex; |
| 1921 | char sizetext[40]; |
| 1922 | fontinfo *info; |
| 1923 | |
| 1924 | gtk_list_store_clear(fs->size_model); |
| 1925 | listindex = 0; |
| 1926 | |
| 1927 | /* |
| 1928 | * Search through the font tree for anything matching our |
| 1929 | * current filter criteria. When we find one, add its font |
| 1930 | * name to the list box. |
| 1931 | */ |
| 1932 | for (i = start; i < end; i++) { |
| 1933 | info = (fontinfo *)index234(fs->fonts_by_selorder, i); |
| 1934 | if (info->flags &~ fs->filter_flags) { |
| 1935 | info->sizeindex = -1; |
| 1936 | continue; /* we're filtering out this font */ |
| 1937 | } |
| 1938 | if (info->size) { |
| 1939 | sprintf(sizetext, "%d", info->size); |
| 1940 | info->sizeindex = listindex; |
| 1941 | gtk_list_store_append(fs->size_model, &iter); |
| 1942 | gtk_list_store_set(fs->size_model, &iter, |
| 1943 | 0, sizetext, 1, i, 2, info->size, -1); |
| 1944 | listindex++; |
| 1945 | } else { |
| 1946 | int j; |
| 1947 | |
| 1948 | assert(i == start); |
| 1949 | assert(i+1 == end); |
| 1950 | |
| 1951 | for (j = 0; j < lenof(unifontsel_default_sizes); j++) { |
| 1952 | sprintf(sizetext, "%d", unifontsel_default_sizes[j]); |
| 1953 | gtk_list_store_append(fs->size_model, &iter); |
| 1954 | gtk_list_store_set(fs->size_model, &iter, 0, sizetext, 1, i, |
| 1955 | 2, unifontsel_default_sizes[j], -1); |
| 1956 | listindex++; |
| 1957 | } |
| 1958 | } |
| 1959 | } |
| 1960 | } |
| 1961 | |
| 1962 | static void unifontsel_set_filter_buttons(unifontsel_internal *fs) |
| 1963 | { |
| 1964 | int i; |
| 1965 | |
| 1966 | for (i = 0; i < lenof(fs->filter_buttons); i++) { |
| 1967 | int flagbit = GPOINTER_TO_INT(gtk_object_get_data |
| 1968 | (GTK_OBJECT(fs->filter_buttons[i]), |
| 1969 | "user-data")); |
| 1970 | gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(fs->filter_buttons[i]), |
| 1971 | !!(fs->filter_flags & flagbit)); |
| 1972 | } |
| 1973 | } |
| 1974 | |
| 1975 | static void unifontsel_draw_preview_text(unifontsel_internal *fs) |
| 1976 | { |
| 1977 | unifont *font; |
| 1978 | char *sizename = NULL; |
| 1979 | fontinfo *info = fs->selected; |
| 1980 | |
| 1981 | if (info) { |
| 1982 | sizename = info->fontclass->scale_fontname |
| 1983 | (GTK_WIDGET(fs->u.window), info->realname, fs->selsize); |
| 1984 | font = info->fontclass->create(GTK_WIDGET(fs->u.window), |
| 1985 | sizename ? sizename : info->realname, |
| 1986 | FALSE, FALSE, 0, 0); |
| 1987 | } else |
| 1988 | font = NULL; |
| 1989 | |
| 1990 | if (fs->preview_pixmap) { |
| 1991 | GdkGC *gc = gdk_gc_new(fs->preview_pixmap); |
| 1992 | gdk_gc_set_foreground(gc, &fs->preview_bg); |
| 1993 | gdk_draw_rectangle(fs->preview_pixmap, gc, 1, 0, 0, |
| 1994 | fs->preview_width, fs->preview_height); |
| 1995 | gdk_gc_set_foreground(gc, &fs->preview_fg); |
| 1996 | if (font) { |
| 1997 | /* |
| 1998 | * The pangram used here is rather carefully |
| 1999 | * constructed: it contains a sequence of very narrow |
| 2000 | * letters (`jil') and a pair of adjacent very wide |
| 2001 | * letters (`wm'). |
| 2002 | * |
| 2003 | * If the user selects a proportional font, it will be |
| 2004 | * coerced into fixed-width character cells when used |
| 2005 | * in the actual terminal window. We therefore display |
| 2006 | * it the same way in the preview pane, so as to show |
| 2007 | * it the way it will actually be displayed - and we |
| 2008 | * deliberately pick a pangram which will show the |
| 2009 | * resulting miskerning at its worst. |
| 2010 | * |
| 2011 | * We aren't trying to sell people these fonts; we're |
| 2012 | * trying to let them make an informed choice. Better |
| 2013 | * that they find out the problems with using |
| 2014 | * proportional fonts in terminal windows here than |
| 2015 | * that they go to the effort of selecting their font |
| 2016 | * and _then_ realise it was a mistake. |
| 2017 | */ |
| 2018 | info->fontclass->draw_text(fs->preview_pixmap, gc, font, |
| 2019 | 0, font->ascent, |
| 2020 | L"bankrupt jilted showmen quiz convex fogey", |
| 2021 | 41, FALSE, FALSE, font->width); |
| 2022 | info->fontclass->draw_text(fs->preview_pixmap, gc, font, |
| 2023 | 0, font->ascent + font->height, |
| 2024 | L"BANKRUPT JILTED SHOWMEN QUIZ CONVEX FOGEY", |
| 2025 | 41, FALSE, FALSE, font->width); |
| 2026 | /* |
| 2027 | * The ordering of punctuation here is also selected |
| 2028 | * with some specific aims in mind. I put ` and ' |
| 2029 | * together because some software (and people) still |
| 2030 | * use them as matched quotes no matter what Unicode |
| 2031 | * might say on the matter, so people can quickly |
| 2032 | * check whether they look silly in a candidate font. |
| 2033 | * The sequence #_@ is there to let people judge the |
| 2034 | * suitability of the underscore as an effectively |
| 2035 | * alphabetic character (since that's how it's often |
| 2036 | * used in practice, at least by programmers). |
| 2037 | */ |
| 2038 | info->fontclass->draw_text(fs->preview_pixmap, gc, font, |
| 2039 | 0, font->ascent + font->height * 2, |
| 2040 | L"0123456789!?,.:;<>()[]{}\\/`'\"+*-=~#_@|%&^$", |
| 2041 | 42, FALSE, FALSE, font->width); |
| 2042 | } |
| 2043 | gdk_gc_unref(gc); |
| 2044 | gdk_window_invalidate_rect(fs->preview_area->window, NULL, FALSE); |
| 2045 | } |
| 2046 | if (font) |
| 2047 | info->fontclass->destroy(font); |
| 2048 | |
| 2049 | sfree(sizename); |
| 2050 | } |
| 2051 | |
| 2052 | static void unifontsel_select_font(unifontsel_internal *fs, |
| 2053 | fontinfo *info, int size, int leftlist, |
| 2054 | int size_is_explicit) |
| 2055 | { |
| 2056 | int index; |
| 2057 | int minval, maxval; |
| 2058 | GtkTreePath *treepath; |
| 2059 | GtkTreeIter iter; |
| 2060 | |
| 2061 | fs->inhibit_response = TRUE; |
| 2062 | |
| 2063 | fs->selected = info; |
| 2064 | fs->selsize = size; |
| 2065 | if (size_is_explicit) |
| 2066 | fs->intendedsize = size; |
| 2067 | |
| 2068 | gtk_widget_set_sensitive(fs->u.ok_button, TRUE); |
| 2069 | |
| 2070 | /* |
| 2071 | * Find the index of this fontinfo in the selorder list. |
| 2072 | */ |
| 2073 | index = -1; |
| 2074 | findpos234(fs->fonts_by_selorder, info, NULL, &index); |
| 2075 | assert(index >= 0); |
| 2076 | |
| 2077 | /* |
| 2078 | * Adjust the font selector flags and redo the font family |
| 2079 | * list box, if necessary. |
| 2080 | */ |
| 2081 | if (leftlist <= 0 && |
| 2082 | (fs->filter_flags | info->flags) != fs->filter_flags) { |
| 2083 | fs->filter_flags |= info->flags; |
| 2084 | unifontsel_set_filter_buttons(fs); |
| 2085 | unifontsel_setup_familylist(fs); |
| 2086 | } |
| 2087 | |
| 2088 | /* |
| 2089 | * Find the appropriate family name and select it in the list. |
| 2090 | */ |
| 2091 | assert(info->familyindex >= 0); |
| 2092 | treepath = gtk_tree_path_new_from_indices(info->familyindex, -1); |
| 2093 | gtk_tree_selection_select_path |
| 2094 | (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->family_list)), |
| 2095 | treepath); |
| 2096 | gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->family_list), |
| 2097 | treepath, NULL, FALSE, 0.0, 0.0); |
| 2098 | gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->family_model), &iter, treepath); |
| 2099 | gtk_tree_path_free(treepath); |
| 2100 | |
| 2101 | /* |
| 2102 | * Now set up the font style list. |
| 2103 | */ |
| 2104 | gtk_tree_model_get(GTK_TREE_MODEL(fs->family_model), &iter, |
| 2105 | 1, &minval, 2, &maxval, -1); |
| 2106 | if (leftlist <= 1) |
| 2107 | unifontsel_setup_stylelist(fs, minval, maxval); |
| 2108 | |
| 2109 | /* |
| 2110 | * Find the appropriate style name and select it in the list. |
| 2111 | */ |
| 2112 | if (info->style) { |
| 2113 | assert(info->styleindex >= 0); |
| 2114 | treepath = gtk_tree_path_new_from_indices(info->styleindex, -1); |
| 2115 | gtk_tree_selection_select_path |
| 2116 | (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->style_list)), |
| 2117 | treepath); |
| 2118 | gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->style_list), |
| 2119 | treepath, NULL, FALSE, 0.0, 0.0); |
| 2120 | gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->style_model), |
| 2121 | &iter, treepath); |
| 2122 | gtk_tree_path_free(treepath); |
| 2123 | |
| 2124 | /* |
| 2125 | * And set up the size list. |
| 2126 | */ |
| 2127 | gtk_tree_model_get(GTK_TREE_MODEL(fs->style_model), &iter, |
| 2128 | 1, &minval, 2, &maxval, -1); |
| 2129 | if (leftlist <= 2) |
| 2130 | unifontsel_setup_sizelist(fs, minval, maxval); |
| 2131 | |
| 2132 | /* |
| 2133 | * Find the appropriate size, and select it in the list. |
| 2134 | */ |
| 2135 | if (info->size) { |
| 2136 | assert(info->sizeindex >= 0); |
| 2137 | treepath = gtk_tree_path_new_from_indices(info->sizeindex, -1); |
| 2138 | gtk_tree_selection_select_path |
| 2139 | (gtk_tree_view_get_selection(GTK_TREE_VIEW(fs->size_list)), |
| 2140 | treepath); |
| 2141 | gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->size_list), |
| 2142 | treepath, NULL, FALSE, 0.0, 0.0); |
| 2143 | gtk_tree_path_free(treepath); |
| 2144 | size = info->size; |
| 2145 | } else { |
| 2146 | int j; |
| 2147 | for (j = 0; j < lenof(unifontsel_default_sizes); j++) |
| 2148 | if (unifontsel_default_sizes[j] == size) { |
| 2149 | treepath = gtk_tree_path_new_from_indices(j, -1); |
| 2150 | gtk_tree_view_set_cursor(GTK_TREE_VIEW(fs->size_list), |
| 2151 | treepath, NULL, FALSE); |
| 2152 | gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(fs->size_list), |
| 2153 | treepath, NULL, FALSE, 0.0, |
| 2154 | 0.0); |
| 2155 | gtk_tree_path_free(treepath); |
| 2156 | } |
| 2157 | } |
| 2158 | |
| 2159 | /* |
| 2160 | * And set up the font size text entry box. |
| 2161 | */ |
| 2162 | { |
| 2163 | char sizetext[40]; |
| 2164 | sprintf(sizetext, "%d", size); |
| 2165 | gtk_entry_set_text(GTK_ENTRY(fs->size_entry), sizetext); |
| 2166 | } |
| 2167 | } else { |
| 2168 | if (leftlist <= 2) |
| 2169 | unifontsel_setup_sizelist(fs, 0, 0); |
| 2170 | gtk_entry_set_text(GTK_ENTRY(fs->size_entry), ""); |
| 2171 | } |
| 2172 | |
| 2173 | /* |
| 2174 | * Grey out the font size edit box if we're not using a |
| 2175 | * scalable font. |
| 2176 | */ |
| 2177 | gtk_entry_set_editable(GTK_ENTRY(fs->size_entry), fs->selected->size == 0); |
| 2178 | gtk_widget_set_sensitive(fs->size_entry, fs->selected->size == 0); |
| 2179 | |
| 2180 | unifontsel_draw_preview_text(fs); |
| 2181 | |
| 2182 | fs->inhibit_response = FALSE; |
| 2183 | } |
| 2184 | |
| 2185 | static void unifontsel_button_toggled(GtkToggleButton *tb, gpointer data) |
| 2186 | { |
| 2187 | unifontsel_internal *fs = (unifontsel_internal *)data; |
| 2188 | int newstate = gtk_toggle_button_get_active(tb); |
| 2189 | int newflags; |
| 2190 | int flagbit = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(tb), |
| 2191 | "user-data")); |
| 2192 | |
| 2193 | if (newstate) |
| 2194 | newflags = fs->filter_flags | flagbit; |
| 2195 | else |
| 2196 | newflags = fs->filter_flags & ~flagbit; |
| 2197 | |
| 2198 | if (fs->filter_flags != newflags) { |
| 2199 | fs->filter_flags = newflags; |
| 2200 | unifontsel_setup_familylist(fs); |
| 2201 | } |
| 2202 | } |
| 2203 | |
| 2204 | static void unifontsel_add_entry(void *ctx, const char *realfontname, |
| 2205 | const char *family, const char *charset, |
| 2206 | const char *style, const char *stylekey, |
| 2207 | int size, int flags, |
| 2208 | const struct unifont_vtable *fontclass) |
| 2209 | { |
| 2210 | unifontsel_internal *fs = (unifontsel_internal *)ctx; |
| 2211 | fontinfo *info; |
| 2212 | int totalsize; |
| 2213 | char *p; |
| 2214 | |
| 2215 | totalsize = sizeof(fontinfo) + strlen(realfontname) + |
| 2216 | (family ? strlen(family) : 0) + (charset ? strlen(charset) : 0) + |
| 2217 | (style ? strlen(style) : 0) + (stylekey ? strlen(stylekey) : 0) + 10; |
| 2218 | info = (fontinfo *)smalloc(totalsize); |
| 2219 | info->fontclass = fontclass; |
| 2220 | p = (char *)info + sizeof(fontinfo); |
| 2221 | info->realname = p; |
| 2222 | strcpy(p, realfontname); |
| 2223 | p += 1+strlen(p); |
| 2224 | if (family) { |
| 2225 | info->family = p; |
| 2226 | strcpy(p, family); |
| 2227 | p += 1+strlen(p); |
| 2228 | } else |
| 2229 | info->family = NULL; |
| 2230 | if (charset) { |
| 2231 | info->charset = p; |
| 2232 | strcpy(p, charset); |
| 2233 | p += 1+strlen(p); |
| 2234 | } else |
| 2235 | info->charset = NULL; |
| 2236 | if (style) { |
| 2237 | info->style = p; |
| 2238 | strcpy(p, style); |
| 2239 | p += 1+strlen(p); |
| 2240 | } else |
| 2241 | info->style = NULL; |
| 2242 | if (stylekey) { |
| 2243 | info->stylekey = p; |
| 2244 | strcpy(p, stylekey); |
| 2245 | p += 1+strlen(p); |
| 2246 | } else |
| 2247 | info->stylekey = NULL; |
| 2248 | assert(p - (char *)info <= totalsize); |
| 2249 | info->size = size; |
| 2250 | info->flags = flags; |
| 2251 | info->index = count234(fs->fonts_by_selorder); |
| 2252 | |
| 2253 | /* |
| 2254 | * It's just conceivable that a misbehaving font enumerator |
| 2255 | * might tell us about the same font real name more than once, |
| 2256 | * in which case we should silently drop the new one. |
| 2257 | */ |
| 2258 | if (add234(fs->fonts_by_realname, info) != info) { |
| 2259 | sfree(info); |
| 2260 | return; |
| 2261 | } |
| 2262 | /* |
| 2263 | * However, we should never get a duplicate key in the |
| 2264 | * selorder tree, because the index field carefully |
| 2265 | * disambiguates otherwise identical records. |
| 2266 | */ |
| 2267 | add234(fs->fonts_by_selorder, info); |
| 2268 | } |
| 2269 | |
| 2270 | static fontinfo *update_for_intended_size(unifontsel_internal *fs, |
| 2271 | fontinfo *info) |
| 2272 | { |
| 2273 | fontinfo info2, *below, *above; |
| 2274 | int pos; |
| 2275 | |
| 2276 | /* |
| 2277 | * Copy the info structure. This doesn't copy its dynamic |
| 2278 | * string fields, but that's unimportant because all we're |
| 2279 | * going to do is to adjust the size field and use it in one |
| 2280 | * tree search. |
| 2281 | */ |
| 2282 | info2 = *info; |
| 2283 | info2.size = fs->intendedsize; |
| 2284 | |
| 2285 | /* |
| 2286 | * Search in the tree to find the fontinfo structure which |
| 2287 | * best approximates the size the user last requested. |
| 2288 | */ |
| 2289 | below = findrelpos234(fs->fonts_by_selorder, &info2, NULL, |
| 2290 | REL234_LE, &pos); |
| 2291 | above = index234(fs->fonts_by_selorder, pos+1); |
| 2292 | |
| 2293 | /* |
| 2294 | * See if we've found it exactly, which is an easy special |
| 2295 | * case. If we have, it'll be in `below' and not `above', |
| 2296 | * because we did a REL234_LE rather than REL234_LT search. |
| 2297 | */ |
| 2298 | if (!fontinfo_selorder_compare(&info2, below)) |
| 2299 | return below; |
| 2300 | |
| 2301 | /* |
| 2302 | * Now we've either found two suitable fonts, one smaller and |
| 2303 | * one larger, or we're at one or other extreme end of the |
| 2304 | * scale. Find out which, by NULLing out either of below and |
| 2305 | * above if it differs from this one in any respect but size |
| 2306 | * (and the disambiguating index field). Bear in mind, also, |
| 2307 | * that either one might _already_ be NULL if we're at the |
| 2308 | * extreme ends of the font list. |
| 2309 | */ |
| 2310 | if (below) { |
| 2311 | info2.size = below->size; |
| 2312 | info2.index = below->index; |
| 2313 | if (fontinfo_selorder_compare(&info2, below)) |
| 2314 | below = NULL; |
| 2315 | } |
| 2316 | if (above) { |
| 2317 | info2.size = above->size; |
| 2318 | info2.index = above->index; |
| 2319 | if (fontinfo_selorder_compare(&info2, above)) |
| 2320 | above = NULL; |
| 2321 | } |
| 2322 | |
| 2323 | /* |
| 2324 | * Now return whichever of above and below is non-NULL, if |
| 2325 | * that's unambiguous. |
| 2326 | */ |
| 2327 | if (!above) |
| 2328 | return below; |
| 2329 | if (!below) |
| 2330 | return above; |
| 2331 | |
| 2332 | /* |
| 2333 | * And now we really do have to make a choice about whether to |
| 2334 | * round up or down. We'll do it by rounding to nearest, |
| 2335 | * breaking ties by rounding up. |
| 2336 | */ |
| 2337 | if (above->size - fs->intendedsize <= fs->intendedsize - below->size) |
| 2338 | return above; |
| 2339 | else |
| 2340 | return below; |
| 2341 | } |
| 2342 | |
| 2343 | static void family_changed(GtkTreeSelection *treeselection, gpointer data) |
| 2344 | { |
| 2345 | unifontsel_internal *fs = (unifontsel_internal *)data; |
| 2346 | GtkTreeModel *treemodel; |
| 2347 | GtkTreeIter treeiter; |
| 2348 | int minval; |
| 2349 | fontinfo *info; |
| 2350 | |
| 2351 | if (fs->inhibit_response) /* we made this change ourselves */ |
| 2352 | return; |
| 2353 | |
| 2354 | if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter)) |
| 2355 | return; |
| 2356 | |
| 2357 | gtk_tree_model_get(treemodel, &treeiter, 1, &minval, -1); |
| 2358 | info = (fontinfo *)index234(fs->fonts_by_selorder, minval); |
| 2359 | info = update_for_intended_size(fs, info); |
| 2360 | if (!info) |
| 2361 | return; /* _shouldn't_ happen unless font list is completely funted */ |
| 2362 | if (!info->size) |
| 2363 | fs->selsize = fs->intendedsize; /* font is scalable */ |
| 2364 | unifontsel_select_font(fs, info, info->size ? info->size : fs->selsize, |
| 2365 | 1, FALSE); |
| 2366 | } |
| 2367 | |
| 2368 | static void style_changed(GtkTreeSelection *treeselection, gpointer data) |
| 2369 | { |
| 2370 | unifontsel_internal *fs = (unifontsel_internal *)data; |
| 2371 | GtkTreeModel *treemodel; |
| 2372 | GtkTreeIter treeiter; |
| 2373 | int minval; |
| 2374 | fontinfo *info; |
| 2375 | |
| 2376 | if (fs->inhibit_response) /* we made this change ourselves */ |
| 2377 | return; |
| 2378 | |
| 2379 | if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter)) |
| 2380 | return; |
| 2381 | |
| 2382 | gtk_tree_model_get(treemodel, &treeiter, 1, &minval, -1); |
| 2383 | if (minval < 0) |
| 2384 | return; /* somehow a charset heading got clicked */ |
| 2385 | info = (fontinfo *)index234(fs->fonts_by_selorder, minval); |
| 2386 | info = update_for_intended_size(fs, info); |
| 2387 | if (!info) |
| 2388 | return; /* _shouldn't_ happen unless font list is completely funted */ |
| 2389 | if (!info->size) |
| 2390 | fs->selsize = fs->intendedsize; /* font is scalable */ |
| 2391 | unifontsel_select_font(fs, info, info->size ? info->size : fs->selsize, |
| 2392 | 2, FALSE); |
| 2393 | } |
| 2394 | |
| 2395 | static void size_changed(GtkTreeSelection *treeselection, gpointer data) |
| 2396 | { |
| 2397 | unifontsel_internal *fs = (unifontsel_internal *)data; |
| 2398 | GtkTreeModel *treemodel; |
| 2399 | GtkTreeIter treeiter; |
| 2400 | int minval, size; |
| 2401 | fontinfo *info; |
| 2402 | |
| 2403 | if (fs->inhibit_response) /* we made this change ourselves */ |
| 2404 | return; |
| 2405 | |
| 2406 | if (!gtk_tree_selection_get_selected(treeselection, &treemodel, &treeiter)) |
| 2407 | return; |
| 2408 | |
| 2409 | gtk_tree_model_get(treemodel, &treeiter, 1, &minval, 2, &size, -1); |
| 2410 | info = (fontinfo *)index234(fs->fonts_by_selorder, minval); |
| 2411 | unifontsel_select_font(fs, info, info->size ? info->size : size, 3, TRUE); |
| 2412 | } |
| 2413 | |
| 2414 | static void size_entry_changed(GtkEditable *ed, gpointer data) |
| 2415 | { |
| 2416 | unifontsel_internal *fs = (unifontsel_internal *)data; |
| 2417 | const char *text; |
| 2418 | int size; |
| 2419 | |
| 2420 | if (fs->inhibit_response) /* we made this change ourselves */ |
| 2421 | return; |
| 2422 | |
| 2423 | text = gtk_entry_get_text(GTK_ENTRY(ed)); |
| 2424 | size = atoi(text); |
| 2425 | |
| 2426 | if (size > 0) { |
| 2427 | assert(fs->selected->size == 0); |
| 2428 | unifontsel_select_font(fs, fs->selected, size, 3, TRUE); |
| 2429 | } |
| 2430 | } |
| 2431 | |
| 2432 | static void alias_resolve(GtkTreeView *treeview, GtkTreePath *path, |
| 2433 | GtkTreeViewColumn *column, gpointer data) |
| 2434 | { |
| 2435 | unifontsel_internal *fs = (unifontsel_internal *)data; |
| 2436 | GtkTreeIter iter; |
| 2437 | int minval, newsize; |
| 2438 | fontinfo *info, *newinfo; |
| 2439 | char *newname; |
| 2440 | |
| 2441 | if (fs->inhibit_response) /* we made this change ourselves */ |
| 2442 | return; |
| 2443 | |
| 2444 | gtk_tree_model_get_iter(GTK_TREE_MODEL(fs->family_model), &iter, path); |
| 2445 | gtk_tree_model_get(GTK_TREE_MODEL(fs->family_model), &iter, 1,&minval, -1); |
| 2446 | info = (fontinfo *)index234(fs->fonts_by_selorder, minval); |
| 2447 | if (info) { |
| 2448 | int flags; |
| 2449 | struct fontinfo_realname_find f; |
| 2450 | |
| 2451 | newname = info->fontclass->canonify_fontname |
| 2452 | (GTK_WIDGET(fs->u.window), info->realname, &newsize, &flags, TRUE); |
| 2453 | |
| 2454 | f.realname = newname; |
| 2455 | f.flags = flags; |
| 2456 | newinfo = find234(fs->fonts_by_realname, &f, fontinfo_realname_find); |
| 2457 | |
| 2458 | sfree(newname); |
| 2459 | if (!newinfo) |
| 2460 | return; /* font name not in our index */ |
| 2461 | if (newinfo == info) |
| 2462 | return; /* didn't change under canonification => not an alias */ |
| 2463 | unifontsel_select_font(fs, newinfo, |
| 2464 | newinfo->size ? newinfo->size : newsize, |
| 2465 | 1, TRUE); |
| 2466 | } |
| 2467 | } |
| 2468 | |
| 2469 | static gint unifontsel_expose_area(GtkWidget *widget, GdkEventExpose *event, |
| 2470 | gpointer data) |
| 2471 | { |
| 2472 | unifontsel_internal *fs = (unifontsel_internal *)data; |
| 2473 | |
| 2474 | if (fs->preview_pixmap) { |
| 2475 | gdk_draw_pixmap(widget->window, |
| 2476 | widget->style->fg_gc[GTK_WIDGET_STATE(widget)], |
| 2477 | fs->preview_pixmap, |
| 2478 | event->area.x, event->area.y, |
| 2479 | event->area.x, event->area.y, |
| 2480 | event->area.width, event->area.height); |
| 2481 | } |
| 2482 | return TRUE; |
| 2483 | } |
| 2484 | |
| 2485 | static gint unifontsel_configure_area(GtkWidget *widget, |
| 2486 | GdkEventConfigure *event, gpointer data) |
| 2487 | { |
| 2488 | unifontsel_internal *fs = (unifontsel_internal *)data; |
| 2489 | int ox, oy, nx, ny, x, y; |
| 2490 | |
| 2491 | /* |
| 2492 | * Enlarge the pixmap, but never shrink it. |
| 2493 | */ |
| 2494 | ox = fs->preview_width; |
| 2495 | oy = fs->preview_height; |
| 2496 | x = event->width; |
| 2497 | y = event->height; |
| 2498 | if (x > ox || y > oy) { |
| 2499 | if (fs->preview_pixmap) |
| 2500 | gdk_pixmap_unref(fs->preview_pixmap); |
| 2501 | |
| 2502 | nx = (x > ox ? x : ox); |
| 2503 | ny = (y > oy ? y : oy); |
| 2504 | fs->preview_pixmap = gdk_pixmap_new(widget->window, nx, ny, -1); |
| 2505 | fs->preview_width = nx; |
| 2506 | fs->preview_height = ny; |
| 2507 | |
| 2508 | unifontsel_draw_preview_text(fs); |
| 2509 | } |
| 2510 | |
| 2511 | gdk_window_invalidate_rect(widget->window, NULL, FALSE); |
| 2512 | |
| 2513 | return TRUE; |
| 2514 | } |
| 2515 | |
| 2516 | unifontsel *unifontsel_new(const char *wintitle) |
| 2517 | { |
| 2518 | unifontsel_internal *fs = snew(unifontsel_internal); |
| 2519 | GtkWidget *table, *label, *w, *ww, *scroll; |
| 2520 | GtkListStore *model; |
| 2521 | GtkTreeViewColumn *column; |
| 2522 | int lists_height, preview_height, font_width, style_width, size_width; |
| 2523 | int i; |
| 2524 | |
| 2525 | fs->inhibit_response = FALSE; |
| 2526 | fs->selected = NULL; |
| 2527 | |
| 2528 | { |
| 2529 | /* |
| 2530 | * Invent some magic size constants. |
| 2531 | */ |
| 2532 | GtkRequisition req; |
| 2533 | label = gtk_label_new("Quite Long Font Name (Foundry)"); |
| 2534 | gtk_widget_size_request(label, &req); |
| 2535 | font_width = req.width; |
| 2536 | lists_height = 14 * req.height; |
| 2537 | preview_height = 5 * req.height; |
| 2538 | gtk_label_set_text(GTK_LABEL(label), "Italic Extra Condensed"); |
| 2539 | gtk_widget_size_request(label, &req); |
| 2540 | style_width = req.width; |
| 2541 | gtk_label_set_text(GTK_LABEL(label), "48000"); |
| 2542 | gtk_widget_size_request(label, &req); |
| 2543 | size_width = req.width; |
| 2544 | #if GTK_CHECK_VERSION(2,10,0) |
| 2545 | g_object_ref_sink(label); |
| 2546 | g_object_unref(label); |
| 2547 | #else |
| 2548 | gtk_object_sink(GTK_OBJECT(label)); |
| 2549 | #endif |
| 2550 | } |
| 2551 | |
| 2552 | /* |
| 2553 | * Create the dialog box and initialise the user-visible |
| 2554 | * fields in the returned structure. |
| 2555 | */ |
| 2556 | fs->u.user_data = NULL; |
| 2557 | fs->u.window = GTK_WINDOW(gtk_dialog_new()); |
| 2558 | gtk_window_set_title(fs->u.window, wintitle); |
| 2559 | fs->u.cancel_button = gtk_dialog_add_button |
| 2560 | (GTK_DIALOG(fs->u.window), GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL); |
| 2561 | fs->u.ok_button = gtk_dialog_add_button |
| 2562 | (GTK_DIALOG(fs->u.window), GTK_STOCK_OK, GTK_RESPONSE_OK); |
| 2563 | gtk_widget_grab_default(fs->u.ok_button); |
| 2564 | |
| 2565 | /* |
| 2566 | * Now set up the internal fields, including in particular all |
| 2567 | * the controls that actually allow the user to select fonts. |
| 2568 | */ |
| 2569 | table = gtk_table_new(8, 3, FALSE); |
| 2570 | gtk_widget_show(table); |
| 2571 | gtk_table_set_col_spacings(GTK_TABLE(table), 8); |
| 2572 | #if GTK_CHECK_VERSION(2,4,0) |
| 2573 | /* GtkAlignment seems to be the simplest way to put padding round things */ |
| 2574 | w = gtk_alignment_new(0, 0, 1, 1); |
| 2575 | gtk_alignment_set_padding(GTK_ALIGNMENT(w), 8, 8, 8, 8); |
| 2576 | gtk_container_add(GTK_CONTAINER(w), table); |
| 2577 | gtk_widget_show(w); |
| 2578 | #else |
| 2579 | w = table; |
| 2580 | #endif |
| 2581 | gtk_box_pack_start(GTK_BOX(GTK_DIALOG(fs->u.window)->vbox), |
| 2582 | w, TRUE, TRUE, 0); |
| 2583 | |
| 2584 | label = gtk_label_new_with_mnemonic("_Font:"); |
| 2585 | gtk_widget_show(label); |
| 2586 | gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0); |
| 2587 | gtk_table_attach(GTK_TABLE(table), label, 0, 1, 0, 1, GTK_FILL, 0, 0, 0); |
| 2588 | |
| 2589 | /* |
| 2590 | * The Font list box displays only a string, but additionally |
| 2591 | * stores two integers which give the limits within the |
| 2592 | * tree234 of the font entries covered by this list entry. |
| 2593 | */ |
| 2594 | model = gtk_list_store_new(3, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT); |
| 2595 | w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model)); |
| 2596 | gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE); |
| 2597 | gtk_label_set_mnemonic_widget(GTK_LABEL(label), w); |
| 2598 | gtk_widget_show(w); |
| 2599 | column = gtk_tree_view_column_new_with_attributes |
| 2600 | ("Font", gtk_cell_renderer_text_new(), |
| 2601 | "text", 0, (char *)NULL); |
| 2602 | gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE); |
| 2603 | gtk_tree_view_append_column(GTK_TREE_VIEW(w), column); |
| 2604 | g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))), |
| 2605 | "changed", G_CALLBACK(family_changed), fs); |
| 2606 | g_signal_connect(G_OBJECT(w), "row-activated", |
| 2607 | G_CALLBACK(alias_resolve), fs); |
| 2608 | |
| 2609 | scroll = gtk_scrolled_window_new(NULL, NULL); |
| 2610 | gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll), |
| 2611 | GTK_SHADOW_IN); |
| 2612 | gtk_container_add(GTK_CONTAINER(scroll), w); |
| 2613 | gtk_widget_show(scroll); |
| 2614 | gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll), |
| 2615 | GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS); |
| 2616 | gtk_widget_set_size_request(scroll, font_width, lists_height); |
| 2617 | gtk_table_attach(GTK_TABLE(table), scroll, 0, 1, 1, 3, GTK_FILL, |
| 2618 | GTK_EXPAND | GTK_FILL, 0, 0); |
| 2619 | fs->family_model = model; |
| 2620 | fs->family_list = w; |
| 2621 | |
| 2622 | label = gtk_label_new_with_mnemonic("_Style:"); |
| 2623 | gtk_widget_show(label); |
| 2624 | gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0); |
| 2625 | gtk_table_attach(GTK_TABLE(table), label, 1, 2, 0, 1, GTK_FILL, 0, 0, 0); |
| 2626 | |
| 2627 | /* |
| 2628 | * The Style list box can contain insensitive elements |
| 2629 | * (character set headings for server-side fonts), so we add |
| 2630 | * an extra column to the list store to hold that information. |
| 2631 | */ |
| 2632 | model = gtk_list_store_new(4, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT, |
| 2633 | G_TYPE_BOOLEAN); |
| 2634 | w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model)); |
| 2635 | gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE); |
| 2636 | gtk_label_set_mnemonic_widget(GTK_LABEL(label), w); |
| 2637 | gtk_widget_show(w); |
| 2638 | column = gtk_tree_view_column_new_with_attributes |
| 2639 | ("Style", gtk_cell_renderer_text_new(), |
| 2640 | "text", 0, "sensitive", 3, (char *)NULL); |
| 2641 | gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE); |
| 2642 | gtk_tree_view_append_column(GTK_TREE_VIEW(w), column); |
| 2643 | g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))), |
| 2644 | "changed", G_CALLBACK(style_changed), fs); |
| 2645 | |
| 2646 | scroll = gtk_scrolled_window_new(NULL, NULL); |
| 2647 | gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll), |
| 2648 | GTK_SHADOW_IN); |
| 2649 | gtk_container_add(GTK_CONTAINER(scroll), w); |
| 2650 | gtk_widget_show(scroll); |
| 2651 | gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll), |
| 2652 | GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS); |
| 2653 | gtk_widget_set_size_request(scroll, style_width, lists_height); |
| 2654 | gtk_table_attach(GTK_TABLE(table), scroll, 1, 2, 1, 3, GTK_FILL, |
| 2655 | GTK_EXPAND | GTK_FILL, 0, 0); |
| 2656 | fs->style_model = model; |
| 2657 | fs->style_list = w; |
| 2658 | |
| 2659 | label = gtk_label_new_with_mnemonic("Si_ze:"); |
| 2660 | gtk_widget_show(label); |
| 2661 | gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0); |
| 2662 | gtk_table_attach(GTK_TABLE(table), label, 2, 3, 0, 1, GTK_FILL, 0, 0, 0); |
| 2663 | |
| 2664 | /* |
| 2665 | * The Size label attaches primarily to a text input box so |
| 2666 | * that the user can select a size of their choice. The list |
| 2667 | * of available sizes is secondary. |
| 2668 | */ |
| 2669 | fs->size_entry = w = gtk_entry_new(); |
| 2670 | gtk_label_set_mnemonic_widget(GTK_LABEL(label), w); |
| 2671 | gtk_widget_set_size_request(w, size_width, -1); |
| 2672 | gtk_widget_show(w); |
| 2673 | gtk_table_attach(GTK_TABLE(table), w, 2, 3, 1, 2, GTK_FILL, 0, 0, 0); |
| 2674 | g_signal_connect(G_OBJECT(w), "changed", G_CALLBACK(size_entry_changed), |
| 2675 | fs); |
| 2676 | |
| 2677 | model = gtk_list_store_new(3, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT); |
| 2678 | w = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model)); |
| 2679 | gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(w), FALSE); |
| 2680 | gtk_widget_show(w); |
| 2681 | column = gtk_tree_view_column_new_with_attributes |
| 2682 | ("Size", gtk_cell_renderer_text_new(), |
| 2683 | "text", 0, (char *)NULL); |
| 2684 | gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE); |
| 2685 | gtk_tree_view_append_column(GTK_TREE_VIEW(w), column); |
| 2686 | g_signal_connect(G_OBJECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(w))), |
| 2687 | "changed", G_CALLBACK(size_changed), fs); |
| 2688 | |
| 2689 | scroll = gtk_scrolled_window_new(NULL, NULL); |
| 2690 | gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scroll), |
| 2691 | GTK_SHADOW_IN); |
| 2692 | gtk_container_add(GTK_CONTAINER(scroll), w); |
| 2693 | gtk_widget_show(scroll); |
| 2694 | gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll), |
| 2695 | GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS); |
| 2696 | gtk_table_attach(GTK_TABLE(table), scroll, 2, 3, 2, 3, GTK_FILL, |
| 2697 | GTK_EXPAND | GTK_FILL, 0, 0); |
| 2698 | fs->size_model = model; |
| 2699 | fs->size_list = w; |
| 2700 | |
| 2701 | /* |
| 2702 | * Preview widget. |
| 2703 | */ |
| 2704 | fs->preview_area = gtk_drawing_area_new(); |
| 2705 | fs->preview_pixmap = NULL; |
| 2706 | fs->preview_width = 0; |
| 2707 | fs->preview_height = 0; |
| 2708 | fs->preview_fg.pixel = fs->preview_bg.pixel = 0; |
| 2709 | fs->preview_fg.red = fs->preview_fg.green = fs->preview_fg.blue = 0x0000; |
| 2710 | fs->preview_bg.red = fs->preview_bg.green = fs->preview_bg.blue = 0xFFFF; |
| 2711 | gdk_colormap_alloc_color(gdk_colormap_get_system(), &fs->preview_fg, |
| 2712 | FALSE, FALSE); |
| 2713 | gdk_colormap_alloc_color(gdk_colormap_get_system(), &fs->preview_bg, |
| 2714 | FALSE, FALSE); |
| 2715 | gtk_signal_connect(GTK_OBJECT(fs->preview_area), "expose_event", |
| 2716 | GTK_SIGNAL_FUNC(unifontsel_expose_area), fs); |
| 2717 | gtk_signal_connect(GTK_OBJECT(fs->preview_area), "configure_event", |
| 2718 | GTK_SIGNAL_FUNC(unifontsel_configure_area), fs); |
| 2719 | gtk_widget_set_size_request(fs->preview_area, 1, preview_height); |
| 2720 | gtk_widget_show(fs->preview_area); |
| 2721 | ww = fs->preview_area; |
| 2722 | w = gtk_frame_new(NULL); |
| 2723 | gtk_container_add(GTK_CONTAINER(w), ww); |
| 2724 | gtk_widget_show(w); |
| 2725 | #if GTK_CHECK_VERSION(2,4,0) |
| 2726 | ww = w; |
| 2727 | /* GtkAlignment seems to be the simplest way to put padding round things */ |
| 2728 | w = gtk_alignment_new(0, 0, 1, 1); |
| 2729 | gtk_alignment_set_padding(GTK_ALIGNMENT(w), 8, 8, 8, 8); |
| 2730 | gtk_container_add(GTK_CONTAINER(w), ww); |
| 2731 | gtk_widget_show(w); |
| 2732 | #endif |
| 2733 | ww = w; |
| 2734 | w = gtk_frame_new("Preview of font"); |
| 2735 | gtk_container_add(GTK_CONTAINER(w), ww); |
| 2736 | gtk_widget_show(w); |
| 2737 | gtk_table_attach(GTK_TABLE(table), w, 0, 3, 3, 4, |
| 2738 | GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 8); |
| 2739 | |
| 2740 | i = 0; |
| 2741 | w = gtk_check_button_new_with_label("Show client-side fonts"); |
| 2742 | gtk_object_set_data(GTK_OBJECT(w), "user-data", |
| 2743 | GINT_TO_POINTER(FONTFLAG_CLIENTSIDE)); |
| 2744 | gtk_signal_connect(GTK_OBJECT(w), "toggled", |
| 2745 | GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs); |
| 2746 | gtk_widget_show(w); |
| 2747 | fs->filter_buttons[i++] = w; |
| 2748 | gtk_table_attach(GTK_TABLE(table), w, 0, 3, 4, 5, GTK_FILL, 0, 0, 0); |
| 2749 | w = gtk_check_button_new_with_label("Show server-side fonts"); |
| 2750 | gtk_object_set_data(GTK_OBJECT(w), "user-data", |
| 2751 | GINT_TO_POINTER(FONTFLAG_SERVERSIDE)); |
| 2752 | gtk_signal_connect(GTK_OBJECT(w), "toggled", |
| 2753 | GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs); |
| 2754 | gtk_widget_show(w); |
| 2755 | fs->filter_buttons[i++] = w; |
| 2756 | gtk_table_attach(GTK_TABLE(table), w, 0, 3, 5, 6, GTK_FILL, 0, 0, 0); |
| 2757 | w = gtk_check_button_new_with_label("Show server-side font aliases"); |
| 2758 | gtk_object_set_data(GTK_OBJECT(w), "user-data", |
| 2759 | GINT_TO_POINTER(FONTFLAG_SERVERALIAS)); |
| 2760 | gtk_signal_connect(GTK_OBJECT(w), "toggled", |
| 2761 | GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs); |
| 2762 | gtk_widget_show(w); |
| 2763 | fs->filter_buttons[i++] = w; |
| 2764 | gtk_table_attach(GTK_TABLE(table), w, 0, 3, 6, 7, GTK_FILL, 0, 0, 0); |
| 2765 | w = gtk_check_button_new_with_label("Show non-monospaced fonts"); |
| 2766 | gtk_object_set_data(GTK_OBJECT(w), "user-data", |
| 2767 | GINT_TO_POINTER(FONTFLAG_NONMONOSPACED)); |
| 2768 | gtk_signal_connect(GTK_OBJECT(w), "toggled", |
| 2769 | GTK_SIGNAL_FUNC(unifontsel_button_toggled), fs); |
| 2770 | gtk_widget_show(w); |
| 2771 | fs->filter_buttons[i++] = w; |
| 2772 | gtk_table_attach(GTK_TABLE(table), w, 0, 3, 7, 8, GTK_FILL, 0, 0, 0); |
| 2773 | |
| 2774 | assert(i == lenof(fs->filter_buttons)); |
| 2775 | fs->filter_flags = FONTFLAG_CLIENTSIDE | FONTFLAG_SERVERSIDE | |
| 2776 | FONTFLAG_SERVERALIAS; |
| 2777 | unifontsel_set_filter_buttons(fs); |
| 2778 | |
| 2779 | /* |
| 2780 | * Go and find all the font names, and set up our master font |
| 2781 | * list. |
| 2782 | */ |
| 2783 | fs->fonts_by_realname = newtree234(fontinfo_realname_compare); |
| 2784 | fs->fonts_by_selorder = newtree234(fontinfo_selorder_compare); |
| 2785 | for (i = 0; i < lenof(unifont_types); i++) |
| 2786 | unifont_types[i]->enum_fonts(GTK_WIDGET(fs->u.window), |
| 2787 | unifontsel_add_entry, fs); |
| 2788 | |
| 2789 | /* |
| 2790 | * And set up the initial font names list. |
| 2791 | */ |
| 2792 | unifontsel_setup_familylist(fs); |
| 2793 | |
| 2794 | fs->selsize = fs->intendedsize = 13; /* random default */ |
| 2795 | gtk_widget_set_sensitive(fs->u.ok_button, FALSE); |
| 2796 | |
| 2797 | return (unifontsel *)fs; |
| 2798 | } |
| 2799 | |
| 2800 | void unifontsel_destroy(unifontsel *fontsel) |
| 2801 | { |
| 2802 | unifontsel_internal *fs = (unifontsel_internal *)fontsel; |
| 2803 | fontinfo *info; |
| 2804 | |
| 2805 | if (fs->preview_pixmap) |
| 2806 | gdk_pixmap_unref(fs->preview_pixmap); |
| 2807 | |
| 2808 | freetree234(fs->fonts_by_selorder); |
| 2809 | while ((info = delpos234(fs->fonts_by_realname, 0)) != NULL) |
| 2810 | sfree(info); |
| 2811 | freetree234(fs->fonts_by_realname); |
| 2812 | |
| 2813 | gtk_widget_destroy(GTK_WIDGET(fs->u.window)); |
| 2814 | sfree(fs); |
| 2815 | } |
| 2816 | |
| 2817 | void unifontsel_set_name(unifontsel *fontsel, const char *fontname) |
| 2818 | { |
| 2819 | unifontsel_internal *fs = (unifontsel_internal *)fontsel; |
| 2820 | int i, start, end, size, flags; |
| 2821 | const char *fontname2 = NULL; |
| 2822 | fontinfo *info; |
| 2823 | |
| 2824 | /* |
| 2825 | * Provide a default if given an empty or null font name. |
| 2826 | */ |
| 2827 | if (!fontname || !*fontname) |
| 2828 | fontname = "server:fixed"; |
| 2829 | |
| 2830 | /* |
| 2831 | * Call the canonify_fontname function. |
| 2832 | */ |
| 2833 | fontname = unifont_do_prefix(fontname, &start, &end); |
| 2834 | for (i = start; i < end; i++) { |
| 2835 | fontname2 = unifont_types[i]->canonify_fontname |
| 2836 | (GTK_WIDGET(fs->u.window), fontname, &size, &flags, FALSE); |
| 2837 | if (fontname2) |
| 2838 | break; |
| 2839 | } |
| 2840 | if (i == end) |
| 2841 | return; /* font name not recognised */ |
| 2842 | |
| 2843 | /* |
| 2844 | * Now look up the canonified font name in our index. |
| 2845 | */ |
| 2846 | { |
| 2847 | struct fontinfo_realname_find f; |
| 2848 | f.realname = fontname2; |
| 2849 | f.flags = flags; |
| 2850 | info = find234(fs->fonts_by_realname, &f, fontinfo_realname_find); |
| 2851 | } |
| 2852 | |
| 2853 | /* |
| 2854 | * If we've found the font, and its size field is either |
| 2855 | * correct or zero (the latter indicating a scalable font), |
| 2856 | * then we're done. Otherwise, try looking up the original |
| 2857 | * font name instead. |
| 2858 | */ |
| 2859 | if (!info || (info->size != size && info->size != 0)) { |
| 2860 | struct fontinfo_realname_find f; |
| 2861 | f.realname = fontname; |
| 2862 | f.flags = flags; |
| 2863 | |
| 2864 | info = find234(fs->fonts_by_realname, &f, fontinfo_realname_find); |
| 2865 | if (!info || info->size != size) |
| 2866 | return; /* font name not in our index */ |
| 2867 | } |
| 2868 | |
| 2869 | /* |
| 2870 | * Now we've got a fontinfo structure and a font size, so we |
| 2871 | * know everything we need to fill in all the fields in the |
| 2872 | * dialog. |
| 2873 | */ |
| 2874 | unifontsel_select_font(fs, info, size, 0, TRUE); |
| 2875 | } |
| 2876 | |
| 2877 | char *unifontsel_get_name(unifontsel *fontsel) |
| 2878 | { |
| 2879 | unifontsel_internal *fs = (unifontsel_internal *)fontsel; |
| 2880 | char *name; |
| 2881 | |
| 2882 | if (!fs->selected) |
| 2883 | return NULL; |
| 2884 | |
| 2885 | if (fs->selected->size == 0) { |
| 2886 | name = fs->selected->fontclass->scale_fontname |
| 2887 | (GTK_WIDGET(fs->u.window), fs->selected->realname, fs->selsize); |
| 2888 | if (name) { |
| 2889 | char *ret = dupcat(fs->selected->fontclass->prefix, ":", |
| 2890 | name, NULL); |
| 2891 | sfree(name); |
| 2892 | return ret; |
| 2893 | } |
| 2894 | } |
| 2895 | |
| 2896 | return dupcat(fs->selected->fontclass->prefix, ":", |
| 2897 | fs->selected->realname, NULL); |
| 2898 | } |
| 2899 | |
| 2900 | #endif /* GTK_CHECK_VERSION(2,0,0) */ |