1 /* GDK - The GIMP Drawing Kit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GTK+ Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
30 #include <pango/pangox.h>
33 #include "gdkprivate-x11.h"
35 typedef struct _GdkFontPrivateX GdkFontPrivateX;
37 struct _GdkFontPrivateX
40 /* XFontStruct *xfont; */
41 /* generic pointer point to XFontStruct or XFontSet */
48 static GHashTable *font_name_hash = NULL;
49 static GHashTable *fontset_name_hash = NULL;
52 gdk_font_hash_insert (GdkFontType type, GdkFont *font, const gchar *font_name)
54 GdkFontPrivateX *private = (GdkFontPrivateX *)font;
55 GHashTable **hashp = (type == GDK_FONT_FONT) ?
56 &font_name_hash : &fontset_name_hash;
59 *hashp = g_hash_table_new (g_str_hash, g_str_equal);
61 private->names = g_slist_prepend (private->names, g_strdup (font_name));
62 g_hash_table_insert (*hashp, private->names->data, font);
66 gdk_font_hash_remove (GdkFontType type, GdkFont *font)
68 GdkFontPrivateX *private = (GdkFontPrivateX *)font;
70 GHashTable *hash = (type == GDK_FONT_FONT) ?
71 font_name_hash : fontset_name_hash;
73 tmp_list = private->names;
76 g_hash_table_remove (hash, tmp_list->data);
77 g_free (tmp_list->data);
79 tmp_list = tmp_list->next;
82 g_slist_free (private->names);
83 private->names = NULL;
87 gdk_font_hash_lookup (GdkFontType type, const gchar *font_name)
90 GHashTable *hash = (type == GDK_FONT_FONT) ?
91 font_name_hash : fontset_name_hash;
97 result = g_hash_table_lookup (hash, font_name);
99 gdk_font_ref (result);
106 gdk_font_load (const gchar *font_name)
109 GdkFontPrivateX *private;
112 g_return_val_if_fail (font_name != NULL, NULL);
114 font = gdk_font_hash_lookup (GDK_FONT_FONT, font_name);
118 xfont = XLoadQueryFont (gdk_display, font_name);
122 font = gdk_font_lookup (xfont->fid);
125 private = (GdkFontPrivateX *) font;
126 if (xfont != private->xfont)
127 XFreeFont (gdk_display, xfont);
133 private = g_new (GdkFontPrivateX, 1);
134 private->xdisplay = gdk_display;
135 private->xfont = xfont;
136 private->base.ref_count = 1;
137 private->names = NULL;
139 font = (GdkFont*) private;
140 font->type = GDK_FONT_FONT;
141 font->ascent = xfont->ascent;
142 font->descent = xfont->descent;
144 gdk_xid_table_insert (&xfont->fid, font);
147 gdk_font_hash_insert (GDK_FONT_FONT, font, font_name);
153 gdk_font_charset_for_locale (void)
155 static char *charset_map[][2] = {
156 { "ANSI_X3.4-1968", "iso8859-1" },
157 { "US-ASCII", "iso8859-1" },
158 { "ISO-8859-1", "iso8859-1" },
159 { "ISO-8859-2", "iso8859-2" },
160 { "ISO-8859-3", "iso8859-3" },
161 { "ISO-8859-4", "iso8859-4" },
162 { "ISO-8859-5", "iso8859-5" },
163 { "ISO-8859-6", "iso8859-6" },
164 { "ISO-8859-7", "iso8859-7" },
165 { "ISO-8859-8", "iso8859-8" },
166 { "ISO-8859-9", "iso8859-9" },
167 { "UTF-8", "iso8859-1" }
174 g_get_charset (&codeset);
176 for (i=0; i < G_N_ELEMENTS (charset_map); i++)
177 if (strcmp (charset_map[i][0], codeset) == 0)
179 result = charset_map[i][1];
184 return g_strdup (result);
186 return g_strdup ("iso8859-1");
190 * gdk_font_from_description:
191 * @font_desc: a #PangoFontDescription.
193 * Load a #GdkFont based on a Pango font description. This font will
194 * only be an approximation of the Pango font, and
195 * internationalization will not be handled correctly. This function
196 * should only be used for legacy code that cannot be easily converted
197 * to use Pango. Using Pango directly will produce better results.
199 * Return value: the newly loaded font, or %NULL if the font
203 gdk_font_from_description (PangoFontDescription *font_desc)
205 PangoFontMap *font_map;
207 GdkFont *result = NULL;
209 g_return_val_if_fail (font_desc != NULL, NULL);
211 font_map = pango_x_font_map_for_display (GDK_DISPLAY ());
212 font = pango_font_map_load_font (font_map, font_desc);
216 gchar *charset = gdk_font_charset_for_locale ();
218 PangoXSubfont *subfont_ids;
219 gint *subfont_charsets;
221 n_subfonts = pango_x_list_subfonts (font, &charset, 1,
222 &subfont_ids, &subfont_charsets);
225 gchar *xlfd = pango_x_font_subfont_xlfd (font, subfont_ids[0]);
226 result = gdk_font_load (xlfd);
231 g_free (subfont_ids);
232 g_free (subfont_charsets);
235 g_object_unref (G_OBJECT (font));
242 gdk_fontset_load (const gchar *fontset_name)
245 GdkFontPrivateX *private;
247 gint missing_charset_count;
248 gchar **missing_charset_list;
251 font = gdk_font_hash_lookup (GDK_FONT_FONTSET, fontset_name);
255 private = g_new (GdkFontPrivateX, 1);
256 font = (GdkFont*) private;
258 private->xdisplay = gdk_display;
259 fontset = XCreateFontSet (gdk_display, fontset_name,
260 &missing_charset_list, &missing_charset_count,
263 if (missing_charset_count)
266 g_warning ("Missing charsets in FontSet creation\n");
267 for (i=0;i<missing_charset_count;i++)
268 g_warning (" %s\n", missing_charset_list[i]);
269 XFreeStringList (missing_charset_list);
272 private->base.ref_count = 1;
283 XFontStruct **font_structs;
286 private->xfont = fontset;
287 font->type = GDK_FONT_FONTSET;
288 num_fonts = XFontsOfFontSet (fontset, &font_structs, &font_names);
290 font->ascent = font->descent = 0;
292 for (i = 0; i < num_fonts; i++)
294 font->ascent = MAX (font->ascent, font_structs[i]->ascent);
295 font->descent = MAX (font->descent, font_structs[i]->descent);
298 private->names = NULL;
299 gdk_font_hash_insert (GDK_FONT_FONTSET, font, fontset_name);
306 _gdk_font_destroy (GdkFont *font)
308 GdkFontPrivateX *private = (GdkFontPrivateX *)font;
310 gdk_font_hash_remove (font->type, font);
315 gdk_xid_table_remove (((XFontStruct *) private->xfont)->fid);
316 XFreeFont (private->xdisplay, (XFontStruct *) private->xfont);
318 case GDK_FONT_FONTSET:
319 XFreeFontSet (private->xdisplay, (XFontSet) private->xfont);
322 g_error ("unknown font type.");
329 _gdk_font_strlen (GdkFont *font,
332 GdkFontPrivateX *font_private;
335 g_return_val_if_fail (font != NULL, -1);
336 g_return_val_if_fail (str != NULL, -1);
338 font_private = (GdkFontPrivateX*) font;
340 if (font->type == GDK_FONT_FONT)
342 XFontStruct *xfont = (XFontStruct *) font_private->xfont;
343 if ((xfont->min_byte1 == 0) && (xfont->max_byte1 == 0))
345 length = strlen (str);
349 guint16 *string_2b = (guint16 *)str;
351 while (*(string_2b++))
355 else if (font->type == GDK_FONT_FONTSET)
357 length = strlen (str);
360 g_error("undefined font type\n");
366 gdk_font_id (const GdkFont *font)
368 const GdkFontPrivateX *font_private;
370 g_return_val_if_fail (font != NULL, 0);
372 font_private = (const GdkFontPrivateX*) font;
374 if (font->type == GDK_FONT_FONT)
376 return ((XFontStruct *) font_private->xfont)->fid;
385 gdk_font_equal (const GdkFont *fonta,
386 const GdkFont *fontb)
388 const GdkFontPrivateX *privatea;
389 const GdkFontPrivateX *privateb;
391 g_return_val_if_fail (fonta != NULL, FALSE);
392 g_return_val_if_fail (fontb != NULL, FALSE);
394 privatea = (const GdkFontPrivateX*) fonta;
395 privateb = (const GdkFontPrivateX*) fontb;
397 if (fonta->type == GDK_FONT_FONT && fontb->type == GDK_FONT_FONT)
399 return (((XFontStruct *) privatea->xfont)->fid ==
400 ((XFontStruct *) privateb->xfont)->fid);
402 else if (fonta->type == GDK_FONT_FONTSET && fontb->type == GDK_FONT_FONTSET)
404 gchar *namea, *nameb;
406 namea = XBaseFontNameListOfFontSet((XFontSet) privatea->xfont);
407 nameb = XBaseFontNameListOfFontSet((XFontSet) privateb->xfont);
409 return (strcmp(namea, nameb) == 0);
412 /* fontset != font */
417 gdk_text_width (GdkFont *font,
421 GdkFontPrivateX *private;
426 g_return_val_if_fail (font != NULL, -1);
427 g_return_val_if_fail (text != NULL, -1);
429 private = (GdkFontPrivateX*) font;
434 xfont = (XFontStruct *) private->xfont;
435 if ((xfont->min_byte1 == 0) && (xfont->max_byte1 == 0))
437 width = XTextWidth (xfont, text, text_length);
441 width = XTextWidth16 (xfont, (XChar2b *) text, text_length / 2);
444 case GDK_FONT_FONTSET:
445 fontset = (XFontSet) private->xfont;
446 width = XmbTextEscapement (fontset, text, text_length);
455 gdk_text_width_wc (GdkFont *font,
456 const GdkWChar *text,
459 GdkFontPrivateX *private;
464 g_return_val_if_fail (font != NULL, -1);
465 g_return_val_if_fail (text != NULL, -1);
467 private = (GdkFontPrivateX*) font;
472 xfont = (XFontStruct *) private->xfont;
473 if ((xfont->min_byte1 == 0) && (xfont->max_byte1 == 0))
477 text_8bit = g_new (gchar, text_length);
478 for (i=0; i<text_length; i++) text_8bit[i] = text[i];
479 width = XTextWidth (xfont, text_8bit, text_length);
487 case GDK_FONT_FONTSET:
488 if (sizeof(GdkWChar) == sizeof(wchar_t))
490 fontset = (XFontSet) private->xfont;
491 width = XwcTextEscapement (fontset, (wchar_t *)text, text_length);
497 fontset = (XFontSet) private->xfont;
498 text_wchar = g_new(wchar_t, text_length);
499 for (i=0; i<text_length; i++) text_wchar[i] = text[i];
500 width = XwcTextEscapement (fontset, text_wchar, text_length);
511 gdk_text_extents (GdkFont *font,
520 GdkFontPrivateX *private;
524 XRectangle ink, logical;
529 g_return_if_fail (font != NULL);
530 g_return_if_fail (text != NULL);
532 private = (GdkFontPrivateX*) font;
537 xfont = (XFontStruct *) private->xfont;
538 if ((xfont->min_byte1 == 0) && (xfont->max_byte1 == 0))
540 XTextExtents (xfont, text, text_length,
541 &direction, &font_ascent, &font_descent,
546 XTextExtents16 (xfont, (XChar2b *) text, text_length / 2,
547 &direction, &font_ascent, &font_descent,
551 *lbearing = overall.lbearing;
553 *rbearing = overall.rbearing;
555 *width = overall.width;
557 *ascent = overall.ascent;
559 *descent = overall.descent;
561 case GDK_FONT_FONTSET:
562 fontset = (XFontSet) private->xfont;
563 XmbTextExtents (fontset, text, text_length, &ink, &logical);
567 *rbearing = ink.x + ink.width;
569 *width = logical.width;
573 *descent = ink.y + ink.height;
580 gdk_text_extents_wc (GdkFont *font,
581 const GdkWChar *text,
589 GdkFontPrivateX *private;
593 XRectangle ink, logical;
598 g_return_if_fail (font != NULL);
599 g_return_if_fail (text != NULL);
601 private = (GdkFontPrivateX*) font;
610 xfont = (XFontStruct *) private->xfont;
611 g_return_if_fail ((xfont->min_byte1 == 0) && (xfont->max_byte1 == 0));
613 text_8bit = g_new (gchar, text_length);
614 for (i=0; i<text_length; i++)
615 text_8bit[i] = text[i];
617 XTextExtents (xfont, text_8bit, text_length,
618 &direction, &font_ascent, &font_descent,
623 *lbearing = overall.lbearing;
625 *rbearing = overall.rbearing;
627 *width = overall.width;
629 *ascent = overall.ascent;
631 *descent = overall.descent;
634 case GDK_FONT_FONTSET:
635 fontset = (XFontSet) private->xfont;
637 if (sizeof(GdkWChar) == sizeof(wchar_t))
638 XwcTextExtents (fontset, (wchar_t *)text, text_length, &ink, &logical);
644 text_wchar = g_new (wchar_t, text_length);
645 for (i = 0; i < text_length; i++)
646 text_wchar[i] = text[i];
647 XwcTextExtents (fontset, text_wchar, text_length, &ink, &logical);
653 *rbearing = ink.x + ink.width;
655 *width = logical.width;
659 *descent = ink.y + ink.height;
666 gdk_x11_font_get_xdisplay (GdkFont *font)
668 g_return_val_if_fail (font != NULL, NULL);
670 return ((GdkFontPrivateX *)font)->xdisplay;
674 gdk_x11_font_get_xfont (GdkFont *font)
676 g_return_val_if_fail (font != NULL, NULL);
678 return ((GdkFontPrivateX *)font)->xfont;
682 * gdk_x11_font_get_name:
685 * Return the X Logical Font Description (for font->type == GDK_FONT_FONT)
686 * or comma separated list of XLFDs (for font->type == GDK_FONT_FONTSET)
687 * that was used to load the font. If the same font was loaded
688 * via multiple names, which name is returned is undefined.
690 * Return value: the name of the font. This string is owned
691 * by GDK and must not be modified or freed.
693 G_CONST_RETURN char *
694 gdk_x11_font_get_name (GdkFont *font)
696 GdkFontPrivateX *private = (GdkFontPrivateX *)font;
698 g_return_val_if_fail (font != NULL, NULL);
700 g_assert (private->names);
702 return private->names->data;