forked from AuroraMiddleware/gtk
559 lines
13 KiB
C
559 lines
13 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-1999. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include <X11/Xlib.h>
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#include <X11/Xos.h>
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#include "gdkfont.h"
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#include "gdkprivate-x11.h"
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static GHashTable *font_name_hash = NULL;
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static GHashTable *fontset_name_hash = NULL;
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static void
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gdk_font_hash_insert (GdkFontType type, GdkFont *font, const gchar *font_name)
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{
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GdkFontPrivateX *private = (GdkFontPrivateX *)font;
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GHashTable **hashp = (type == GDK_FONT_FONT) ?
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&font_name_hash : &fontset_name_hash;
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if (!*hashp)
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*hashp = g_hash_table_new (g_str_hash, g_str_equal);
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private->names = g_slist_prepend (private->names, g_strdup (font_name));
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g_hash_table_insert (*hashp, private->names->data, font);
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}
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static void
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gdk_font_hash_remove (GdkFontType type, GdkFont *font)
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{
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GdkFontPrivateX *private = (GdkFontPrivateX *)font;
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GSList *tmp_list;
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GHashTable *hash = (type == GDK_FONT_FONT) ?
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font_name_hash : fontset_name_hash;
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tmp_list = private->names;
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while (tmp_list)
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{
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g_hash_table_remove (hash, tmp_list->data);
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g_free (tmp_list->data);
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tmp_list = tmp_list->next;
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}
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g_slist_free (private->names);
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private->names = NULL;
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}
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static GdkFont *
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gdk_font_hash_lookup (GdkFontType type, const gchar *font_name)
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{
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GdkFont *result;
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GHashTable *hash = (type == GDK_FONT_FONT) ?
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font_name_hash : fontset_name_hash;
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if (!hash)
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return NULL;
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else
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{
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result = g_hash_table_lookup (hash, font_name);
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if (result)
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gdk_font_ref (result);
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return result;
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}
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}
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GdkFont*
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gdk_font_load (const gchar *font_name)
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{
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GdkFont *font;
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GdkFontPrivateX *private;
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XFontStruct *xfont;
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g_return_val_if_fail (font_name != NULL, NULL);
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font = gdk_font_hash_lookup (GDK_FONT_FONT, font_name);
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if (font)
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return font;
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xfont = XLoadQueryFont (gdk_display, font_name);
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if (xfont == NULL)
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return NULL;
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font = gdk_font_lookup (xfont->fid);
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if (font != NULL)
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{
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private = (GdkFontPrivateX *) font;
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if (xfont != private->xfont)
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XFreeFont (gdk_display, xfont);
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gdk_font_ref (font);
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}
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else
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{
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private = g_new (GdkFontPrivateX, 1);
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private->xdisplay = gdk_display;
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private->xfont = xfont;
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private->base.ref_count = 1;
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private->names = NULL;
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font = (GdkFont*) private;
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font->type = GDK_FONT_FONT;
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font->ascent = xfont->ascent;
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font->descent = xfont->descent;
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gdk_xid_table_insert (&xfont->fid, font);
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}
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gdk_font_hash_insert (GDK_FONT_FONT, font, font_name);
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return font;
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}
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GdkFont*
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gdk_fontset_load (const gchar *fontset_name)
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{
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GdkFont *font;
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GdkFontPrivateX *private;
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XFontSet fontset;
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gint missing_charset_count;
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gchar **missing_charset_list;
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gchar *def_string;
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font = gdk_font_hash_lookup (GDK_FONT_FONTSET, fontset_name);
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if (font)
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return font;
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private = g_new (GdkFontPrivateX, 1);
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font = (GdkFont*) private;
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private->xdisplay = gdk_display;
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fontset = XCreateFontSet (gdk_display, fontset_name,
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&missing_charset_list, &missing_charset_count,
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&def_string);
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if (missing_charset_count)
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{
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gint i;
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g_warning ("Missing charsets in FontSet creation\n");
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for (i=0;i<missing_charset_count;i++)
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g_warning (" %s\n", missing_charset_list[i]);
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XFreeStringList (missing_charset_list);
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}
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private->base.ref_count = 1;
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if (!fontset)
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{
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g_free (font);
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return NULL;
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}
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else
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{
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gint num_fonts;
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gint i;
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XFontStruct **font_structs;
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gchar **font_names;
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private->xfont = fontset;
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font->type = GDK_FONT_FONTSET;
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num_fonts = XFontsOfFontSet (fontset, &font_structs, &font_names);
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font->ascent = font->descent = 0;
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for (i = 0; i < num_fonts; i++)
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{
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font->ascent = MAX (font->ascent, font_structs[i]->ascent);
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font->descent = MAX (font->descent, font_structs[i]->descent);
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}
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private->names = NULL;
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gdk_font_hash_insert (GDK_FONT_FONTSET, font, fontset_name);
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return font;
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}
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}
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void
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_gdk_font_destroy (GdkFont *font)
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{
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GdkFontPrivateX *private = (GdkFontPrivateX *)font;
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gdk_font_hash_remove (font->type, font);
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switch (font->type)
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{
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case GDK_FONT_FONT:
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gdk_xid_table_remove (((XFontStruct *) private->xfont)->fid);
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XFreeFont (private->xdisplay, (XFontStruct *) private->xfont);
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break;
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case GDK_FONT_FONTSET:
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XFreeFontSet (private->xdisplay, (XFontSet) private->xfont);
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break;
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default:
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g_error ("unknown font type.");
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break;
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}
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g_free (font);
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}
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gint
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_gdk_font_strlen (GdkFont *font,
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const gchar *str)
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{
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GdkFontPrivateX *font_private;
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gint length = 0;
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g_return_val_if_fail (font != NULL, -1);
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g_return_val_if_fail (str != NULL, -1);
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font_private = (GdkFontPrivateX*) font;
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if (font->type == GDK_FONT_FONT)
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{
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XFontStruct *xfont = (XFontStruct *) font_private->xfont;
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if ((xfont->min_byte1 == 0) && (xfont->max_byte1 == 0))
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{
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length = strlen (str);
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}
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else
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{
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guint16 *string_2b = (guint16 *)str;
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while (*(string_2b++))
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length++;
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}
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}
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else if (font->type == GDK_FONT_FONTSET)
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{
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length = strlen (str);
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}
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else
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g_error("undefined font type\n");
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return length;
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}
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gint
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gdk_font_id (const GdkFont *font)
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{
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const GdkFontPrivateX *font_private;
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g_return_val_if_fail (font != NULL, 0);
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font_private = (const GdkFontPrivateX*) font;
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if (font->type == GDK_FONT_FONT)
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{
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return ((XFontStruct *) font_private->xfont)->fid;
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}
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else
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{
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return 0;
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}
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}
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gboolean
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gdk_font_equal (const GdkFont *fonta,
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const GdkFont *fontb)
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{
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const GdkFontPrivateX *privatea;
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const GdkFontPrivateX *privateb;
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g_return_val_if_fail (fonta != NULL, FALSE);
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g_return_val_if_fail (fontb != NULL, FALSE);
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privatea = (const GdkFontPrivateX*) fonta;
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privateb = (const GdkFontPrivateX*) fontb;
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if (fonta->type == GDK_FONT_FONT && fontb->type == GDK_FONT_FONT)
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{
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return (((XFontStruct *) privatea->xfont)->fid ==
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((XFontStruct *) privateb->xfont)->fid);
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}
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else if (fonta->type == GDK_FONT_FONTSET && fontb->type == GDK_FONT_FONTSET)
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{
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gchar *namea, *nameb;
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namea = XBaseFontNameListOfFontSet((XFontSet) privatea->xfont);
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nameb = XBaseFontNameListOfFontSet((XFontSet) privateb->xfont);
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return (strcmp(namea, nameb) == 0);
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}
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else
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/* fontset != font */
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return 0;
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}
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gint
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gdk_text_width (GdkFont *font,
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const gchar *text,
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gint text_length)
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{
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GdkFontPrivateX *private;
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gint width;
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XFontStruct *xfont;
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XFontSet fontset;
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g_return_val_if_fail (font != NULL, -1);
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g_return_val_if_fail (text != NULL, -1);
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private = (GdkFontPrivateX*) font;
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switch (font->type)
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{
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case GDK_FONT_FONT:
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xfont = (XFontStruct *) private->xfont;
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if ((xfont->min_byte1 == 0) && (xfont->max_byte1 == 0))
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{
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width = XTextWidth (xfont, text, text_length);
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}
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else
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{
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width = XTextWidth16 (xfont, (XChar2b *) text, text_length / 2);
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}
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break;
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case GDK_FONT_FONTSET:
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fontset = (XFontSet) private->xfont;
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width = XmbTextEscapement (fontset, text, text_length);
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break;
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default:
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width = 0;
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}
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return width;
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}
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gint
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gdk_text_width_wc (GdkFont *font,
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const GdkWChar *text,
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gint text_length)
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{
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GdkFontPrivateX *private;
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gint width;
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XFontStruct *xfont;
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XFontSet fontset;
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g_return_val_if_fail (font != NULL, -1);
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g_return_val_if_fail (text != NULL, -1);
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private = (GdkFontPrivateX*) font;
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switch (font->type)
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{
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case GDK_FONT_FONT:
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xfont = (XFontStruct *) private->xfont;
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if ((xfont->min_byte1 == 0) && (xfont->max_byte1 == 0))
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{
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gchar *text_8bit;
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gint i;
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text_8bit = g_new (gchar, text_length);
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for (i=0; i<text_length; i++) text_8bit[i] = text[i];
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width = XTextWidth (xfont, text_8bit, text_length);
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g_free (text_8bit);
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}
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else
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{
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width = 0;
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}
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break;
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case GDK_FONT_FONTSET:
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if (sizeof(GdkWChar) == sizeof(wchar_t))
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{
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fontset = (XFontSet) private->xfont;
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width = XwcTextEscapement (fontset, (wchar_t *)text, text_length);
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}
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else
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{
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wchar_t *text_wchar;
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gint i;
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fontset = (XFontSet) private->xfont;
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text_wchar = g_new(wchar_t, text_length);
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for (i=0; i<text_length; i++) text_wchar[i] = text[i];
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width = XwcTextEscapement (fontset, text_wchar, text_length);
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g_free (text_wchar);
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}
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break;
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default:
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width = 0;
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}
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return width;
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}
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void
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gdk_text_extents (GdkFont *font,
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const gchar *text,
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gint text_length,
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gint *lbearing,
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gint *rbearing,
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gint *width,
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gint *ascent,
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gint *descent)
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{
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GdkFontPrivateX *private;
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XCharStruct overall;
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XFontStruct *xfont;
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XFontSet fontset;
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XRectangle ink, logical;
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int direction;
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int font_ascent;
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int font_descent;
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g_return_if_fail (font != NULL);
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g_return_if_fail (text != NULL);
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private = (GdkFontPrivateX*) font;
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switch (font->type)
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{
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case GDK_FONT_FONT:
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xfont = (XFontStruct *) private->xfont;
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if ((xfont->min_byte1 == 0) && (xfont->max_byte1 == 0))
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{
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XTextExtents (xfont, text, text_length,
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&direction, &font_ascent, &font_descent,
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&overall);
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}
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else
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{
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XTextExtents16 (xfont, (XChar2b *) text, text_length / 2,
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&direction, &font_ascent, &font_descent,
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&overall);
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}
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if (lbearing)
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*lbearing = overall.lbearing;
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if (rbearing)
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*rbearing = overall.rbearing;
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if (width)
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*width = overall.width;
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if (ascent)
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*ascent = overall.ascent;
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if (descent)
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*descent = overall.descent;
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break;
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case GDK_FONT_FONTSET:
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fontset = (XFontSet) private->xfont;
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XmbTextExtents (fontset, text, text_length, &ink, &logical);
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if (lbearing)
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*lbearing = ink.x;
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if (rbearing)
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*rbearing = ink.x + ink.width;
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if (width)
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*width = logical.width;
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if (ascent)
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*ascent = -ink.y;
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if (descent)
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*descent = ink.y + ink.height;
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break;
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}
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}
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void
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gdk_text_extents_wc (GdkFont *font,
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const GdkWChar *text,
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gint text_length,
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gint *lbearing,
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gint *rbearing,
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gint *width,
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gint *ascent,
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gint *descent)
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{
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GdkFontPrivateX *private;
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XCharStruct overall;
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XFontStruct *xfont;
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XFontSet fontset;
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XRectangle ink, logical;
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int direction;
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int font_ascent;
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int font_descent;
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g_return_if_fail (font != NULL);
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g_return_if_fail (text != NULL);
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private = (GdkFontPrivateX*) font;
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switch (font->type)
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{
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case GDK_FONT_FONT:
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{
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gchar *text_8bit;
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gint i;
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xfont = (XFontStruct *) private->xfont;
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g_return_if_fail ((xfont->min_byte1 == 0) && (xfont->max_byte1 == 0));
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text_8bit = g_new (gchar, text_length);
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for (i=0; i<text_length; i++)
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text_8bit[i] = text[i];
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XTextExtents (xfont, text_8bit, text_length,
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&direction, &font_ascent, &font_descent,
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&overall);
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g_free (text_8bit);
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if (lbearing)
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*lbearing = overall.lbearing;
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if (rbearing)
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*rbearing = overall.rbearing;
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if (width)
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*width = overall.width;
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if (ascent)
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*ascent = overall.ascent;
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if (descent)
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*descent = overall.descent;
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break;
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}
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case GDK_FONT_FONTSET:
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fontset = (XFontSet) private->xfont;
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if (sizeof(GdkWChar) == sizeof(wchar_t))
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XwcTextExtents (fontset, (wchar_t *)text, text_length, &ink, &logical);
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else
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{
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wchar_t *text_wchar;
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gint i;
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text_wchar = g_new (wchar_t, text_length);
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for (i = 0; i < text_length; i++)
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text_wchar[i] = text[i];
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XwcTextExtents (fontset, text_wchar, text_length, &ink, &logical);
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g_free (text_wchar);
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}
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if (lbearing)
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*lbearing = ink.x;
|
|
if (rbearing)
|
|
*rbearing = ink.x + ink.width;
|
|
if (width)
|
|
*width = logical.width;
|
|
if (ascent)
|
|
*ascent = -ink.y;
|
|
if (descent)
|
|
*descent = ink.y + ink.height;
|
|
break;
|
|
}
|
|
|
|
}
|