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gtk/gdk/linux-fb/gdkfont-fb.c
Elliot Lee dd7510dccb *** empty log message ***
2000-06-20 20:20:38 +00:00

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/* GDK - The GIMP Drawing Kit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-1999. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include <math.h>
#include <stdlib.h>
#include "gdkfont.h"
#include "gdkprivate-fb.h"
#include "gdkpango.h"
#include <pango/pango.h>
#include <freetype/freetype.h>
#if !defined(FREETYPE_MAJOR) || FREETYPE_MAJOR != 2
#error "We need Freetype 2.0 (beta?)"
#endif
GdkFont*
gdk_font_from_description (PangoFontDescription *font_desc)
{
GdkFont *font;
GdkFontPrivateFB *private;
g_return_val_if_fail(font_desc, NULL);
private = g_new0(GdkFontPrivateFB, 1);
font = (GdkFont *)private;
private->base.ref_count = 1;
return font;
}
/* ********************* */
#if 0
static GHashTable *font_name_hash = NULL;
static GHashTable *fontset_name_hash = NULL;
static void
gdk_font_hash_insert (GdkFontType type, GdkFont *font, const gchar *font_name)
{
GdkFontPrivateFB *private = (GdkFontPrivateFB *)font;
GHashTable **hashp = (type == GDK_FONT_FONT) ?
&font_name_hash : &fontset_name_hash;
if (!*hashp)
*hashp = g_hash_table_new (g_str_hash, g_str_equal);
private->names = g_slist_prepend (private->names, g_strdup (font_name));
g_hash_table_insert (*hashp, private->names->data, font);
}
static void
gdk_font_hash_remove (GdkFontType type, GdkFont *font)
{
GdkFontPrivateFB *private = (GdkFontPrivateFB *)font;
GSList *tmp_list;
GHashTable *hash = (type == GDK_FONT_FONT) ?
font_name_hash : fontset_name_hash;
tmp_list = private->names;
while (tmp_list)
{
g_hash_table_remove (hash, tmp_list->data);
g_free (tmp_list->data);
tmp_list = tmp_list->next;
}
g_slist_free (private->names);
private->names = NULL;
}
static GdkFont *
gdk_font_hash_lookup (GdkFontType type, const gchar *font_name)
{
GdkFont *result;
GHashTable *hash = (type == GDK_FONT_FONT) ?
font_name_hash : fontset_name_hash;
if (!hash)
return NULL;
else
{
result = g_hash_table_lookup (hash, font_name);
if (result)
gdk_font_ref (result);
return result;
}
}
GdkFont*
gdk_font_load (const gchar *font_name)
{
GdkFont *font;
GdkFontPrivateFB *private;
g_return_val_if_fail (font_name != NULL, NULL);
font = gdk_font_hash_lookup (GDK_FONT_FONTSET, font_name);
if (font)
return font;
{
char **pieces;
BBox bb;
private = g_new0 (GdkFontPrivateFB, 1);
private->base.ref_count = 1;
private->names = NULL;
pieces = g_strsplit(font_name, "-", 2);
if(pieces[1])
{
private->size = atof(pieces[1]);
private->t1_font_id = T1_AddFont(pieces[0]);
}
else
private->t1_font_id = T1_AddFont((char *)font_name);
g_strfreev(pieces);
T1_LoadFont(private->t1_font_id);
CreateNewFontSize(private->t1_font_id, private->size, FALSE);
font = (GdkFont*) private;
font->type = GDK_FONT_FONTSET;
bb = T1_GetFontBBox(private->t1_font_id);
font->ascent = ((double)bb.ury) / 1000.0 * private->size;
font->descent = ((double)bb.lly) / -1000.0 * private->size;
}
gdk_font_hash_insert (GDK_FONT_FONTSET, font, font_name);
return font;
}
GdkFont*
gdk_fontset_load (const gchar *fontset_name)
{
return gdk_font_load(fontset_name);
}
#endif
void
_gdk_font_destroy (GdkFont *font)
{
#if 0
gdk_font_hash_remove (font->type, font);
#endif
switch (font->type)
{
case GDK_FONT_FONT:
break;
case GDK_FONT_FONTSET:
break;
default:
g_error ("unknown font type.");
break;
}
g_free (font);
}
gint
_gdk_font_strlen (GdkFont *font,
const gchar *str)
{
GdkFontPrivateFB *font_private;
gint length = 0;
g_return_val_if_fail (font != NULL, -1);
g_return_val_if_fail (str != NULL, -1);
font_private = (GdkFontPrivateFB*) font;
if (font->type == GDK_FONT_FONT)
{
guint16 *string_2b = (guint16 *)str;
while (*(string_2b++))
length++;
}
else if (font->type == GDK_FONT_FONTSET)
{
length = strlen (str);
}
else
g_error("undefined font type\n");
return length;
}
gint
gdk_font_id (const GdkFont *font)
{
const GdkFontPrivateFB *font_private;
g_return_val_if_fail (font != NULL, 0);
font_private = (const GdkFontPrivateFB*) font;
if (font->type == GDK_FONT_FONT)
{
return -1;
}
else
{
return 0;
}
}
gint
gdk_font_equal (const GdkFont *fonta,
const GdkFont *fontb)
{
const GdkFontPrivateFB *privatea;
const GdkFontPrivateFB *privateb;
g_return_val_if_fail (fonta != NULL, FALSE);
g_return_val_if_fail (fontb != NULL, FALSE);
privatea = (const GdkFontPrivateFB*) fonta;
privateb = (const GdkFontPrivateFB*) fontb;
if(fonta == fontb)
return TRUE;
#if 0
if(privatea->t1_font_id == privateb->t1_font_id
&& privatea->size == privateb->size)
return TRUE;
#endif
return FALSE;
}
gint
gdk_text_width (GdkFont *font,
const gchar *text,
gint text_length)
{
#if 0
GdkFontPrivateFB *private;
gint width;
double n;
g_return_val_if_fail (font != NULL, -1);
g_return_val_if_fail (text != NULL, -1);
private = (GdkFontPrivateFB*) font;
switch (font->type)
{
case GDK_FONT_FONT:
case GDK_FONT_FONTSET:
n = private->size / 1000.0;
n *= T1_GetStringWidth(private->t1_font_id, (char *)text, text_length, 0, T1_KERNING);
width = ceil(n);
break;
default:
width = 0;
break;
}
return width;
#else
return 0;
#endif
}
gint
gdk_text_width_wc (GdkFont *font,
const GdkWChar *text,
gint text_length)
{
#if 0
char *realstr;
int i;
realstr = alloca(text_length + 1);
for(i = 0; i < text_length; i++)
realstr[i] = text[i];
realstr[i] = '\0';
return gdk_text_width(font, realstr, text_length);
#else
return 0;
#endif
}
void
gdk_text_extents (GdkFont *font,
const gchar *text,
gint text_length,
gint *lbearing,
gint *rbearing,
gint *width,
gint *ascent,
gint *descent)
{
#if 0
GdkFontPrivateFB *private;
METRICSINFO mi;
g_return_if_fail (font != NULL);
g_return_if_fail (text != NULL);
private = (GdkFontPrivateFB*) font;
mi = T1_GetMetricsInfo(private->t1_font_id, (char *)text, text_length, 0, T1_KERNING);
if(ascent)
*ascent = ((double)mi.bbox.ury) / 1000.0 * private->size;
if(descent)
*descent = ((double)mi.bbox.lly) / -1000.0 * private->size;
if(width)
*width = ((double)mi.width) / 1000.0 * private->size;
if(lbearing)
*lbearing = ((double)mi.bbox.llx) / 1000.0 * private->size;
if(rbearing)
*rbearing = ((double)mi.bbox.urx) / 1000.0 * private->size;
#else
if(ascent)
*ascent = 0;
if(descent)
*descent = 0;
if(width)
*width = 0;
if(lbearing)
*lbearing = 0;
if(rbearing)
*rbearing = 0;
#endif
}
void
gdk_text_extents_wc (GdkFont *font,
const GdkWChar *text,
gint text_length,
gint *lbearing,
gint *rbearing,
gint *width,
gint *ascent,
gint *descent)
{
char *realstr;
int i;
realstr = alloca(text_length + 1);
for(i = 0; i < text_length; i++)
realstr[i] = text[i];
realstr[i] = '\0';
return gdk_text_extents(font, realstr, text_length, lbearing, rbearing, width, ascent, descent);
}
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