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#define _E_FONT_C_
/*
* e-font
*
* Temporary wrappers around GdkFonts to get unicode displaying
*
* Author: Lauris Kaplinski <lauris@helixcode.com>
*
* Copyright (C) 2000 Helix Code, Inc.
*
*/
#include <string.h>
#include <gdk/gdkx.h>
#include <unicode.h>
#include "e-font.h"
struct _EFont {
GdkFont font;
};
EFont *
e_font_from_gdk_name (const gchar *name)
{
GdkFont *font;
font = gdk_fontset_load (name);
return (EFont *) font;
}
EFont *
e_font_from_gdk_font (GdkFont *font)
{
gdk_font_ref (font);
return (EFont *) font;
}
void
e_font_ref (EFont *font)
{
gdk_font_ref (&font->font);
}
void
e_font_unref (EFont *font)
{
gdk_font_unref (&font->font);
}
gint
e_font_ascent (EFont * font)
{
return font->font.ascent;
}
gint
e_font_descent (EFont * font)
{
return font->font.descent;
}
void
e_font_draw_utf8_text (GdkDrawable *drawable, EFont *font, EFontStyle style, GdkGC *gc, gint x, gint y, gchar *text, gint numbytes)
{
guchar *iso;
gchar *p;
gint uni, len;
g_return_if_fail (drawable != NULL);
g_return_if_fail (font != NULL);
g_return_if_fail (gc != NULL);
g_return_if_fail (text != NULL);
if (numbytes < 1) return;
iso = alloca (numbytes);
for (len = 0, p = text; p != NULL && p < (text + numbytes); len++, p = unicode_next_utf8 (p)) {
unicode_get_utf8 (p, &uni);
if ((uni < ' ') || (uni > 255)) uni = ' ';
iso[len] = uni;
}
gdk_draw_text (drawable, &font->font, gc, x, y, iso, len);
if (style & E_FONT_BOLD)
gdk_draw_text (drawable, &font->font, gc, x + 1, y, iso, len);
}
gint
e_font_utf8_text_width (EFont *font, EFontStyle style, char *text, int numbytes)
{
guchar *iso;
gchar *p;
gint uni, len;
g_return_val_if_fail (font != NULL, 0);
g_return_val_if_fail (text != NULL, 0);
iso = alloca (numbytes);
for (len = 0, p = text; p != NULL && p < (text + numbytes); len++, p = unicode_next_utf8 (p)) {
unicode_get_utf8 (p, &uni);
if ((uni < ' ') || (uni > 255)) uni = ' ';
iso[len] = uni;
}
return gdk_text_width (&font->font, iso, len);
}
gint
e_font_utf8_char_width (EFont *font, EFontStyle style, char *text)
{
unicode_char_t uni;
guchar iso;
g_return_val_if_fail (font != NULL, 0);
g_return_val_if_fail (text != NULL, 0);
if (!unicode_get_utf8 (text, &uni)) return 0;
if ((uni < ' ') || (uni > 255)) uni = ' ';
iso = uni;
return gdk_text_width (&font->font, &iso, 1);
}
static const gchar *
translate_encoding (const gchar *encoding)
{
static GHashTable *eh = NULL;
gchar e[64];
if (!eh) {
eh = g_hash_table_new (g_str_hash, g_str_equal);
g_hash_table_insert (eh, "iso8859-1", "iso-8859-1");
g_hash_table_insert (eh, "iso8859-2", "iso-8859-2");
g_hash_table_insert (eh, "iso8859-3", "iso-8859-3");
g_hash_table_insert (eh, "iso8859-4", "iso-8859-4");
g_hash_table_insert (eh, "iso8859-5", "iso-8859-5");
g_hash_table_insert (eh, "iso8859-6", "iso-8859-6");
g_hash_table_insert (eh, "iso8859-7", "iso-8859-7");
g_hash_table_insert (eh, "iso8859-8", "iso-8859-8");
g_hash_table_insert (eh, "iso8859-9", "iso-8859-9");
g_hash_table_insert (eh, "iso8859-10", "iso-8859-10");
g_hash_table_insert (eh, "iso8859-13", "iso-8859-13");
g_hash_table_insert (eh, "iso8859-14", "iso-8859-14");
g_hash_table_insert (eh, "iso8859-15", "iso-8859-15");
g_hash_table_insert (eh, "iso10646-1", "UCS2");
}
strncpy (e, encoding, 64);
g_strdown (e);
return g_hash_table_lookup (eh, e);
}
const gchar *
e_gdk_font_encoding (GdkFont *font)
{
Atom font_atom, atom;
Bool status;
char *name, *p;
const gchar *encoding;
gint i;
if (!font) return NULL;
font_atom = gdk_atom_intern ("FONT", FALSE);
if (font->type == GDK_FONT_FONTSET) {
XFontStruct **font_structs;
gint num_fonts;
gchar **font_names;
num_fonts = XFontsOfFontSet (GDK_FONT_XFONT (font),
&font_structs,
&font_names);
status = XGetFontProperty (font_structs[0],
font_atom,
&atom);
} else {
status = XGetFontProperty (GDK_FONT_XFONT (font),
font_atom,
&atom);
}
if (!status) return NULL;
name = p = gdk_atom_name (atom);
for (i = 0; i < 13; i++) {
/* Skip hyphen */
while (*p && (*p != '-')) p++;
if (*p) p++;
}
#if 0
p = strchr (name, '-'); /* Foundry */
p = strchr (p + 1, '-'); /* Family */
p = strchr (p + 1, '-'); /* Weight */
p = strchr (p + 1, '-'); /* Slant */
p = strchr (p + 1, '-'); /* Set Width */
p = strchr (p + 1, '-'); /* Add Style */
p = strchr (p + 1, '-'); /* Pixel Size */
p = strchr (p + 1, '-'); /* Point Size */
p = strchr (p + 1, '-'); /* Resolution X */
p = strchr (p + 1, '-'); /* Resolution Y */
p = strchr (p + 1, '-'); /* Spacing */
p = strchr (p + 1, '-'); /* Average Width */
p = strchr (p + 1, '-'); /* Charset */
encoding = translate_encoding (p + 1);
#else
if (!*p) return NULL;
encoding = translate_encoding (p);
#endif
g_free (name);
return encoding;
}
unicode_iconv_t
e_uiconv_from_gdk_font (GdkFont *font)
{
static GHashTable *uh = NULL;
const gchar *enc;
unicode_iconv_t uiconv;
if (!font) return (unicode_iconv_t) -1;
enc = e_gdk_font_encoding (font);
if (!enc) return (unicode_iconv_t) -1;
if (!uh) uh = g_hash_table_new (g_str_hash, g_str_equal);
uiconv = g_hash_table_lookup (uh, enc);
if (!uiconv) {
uiconv = unicode_iconv_open ("UTF-8", enc);
if (uiconv == (unicode_iconv_t) -1) return uiconv;
g_hash_table_insert (uh, (gpointer) enc, uiconv);
}
return uiconv;
}
unicode_iconv_t
e_uiconv_to_gdk_font (GdkFont *font)
{
static GHashTable *uh = NULL;
const gchar *enc;
unicode_iconv_t uiconv;
if (!font) return (unicode_iconv_t) -1;
enc = e_gdk_font_encoding (font);
if (!enc) return (unicode_iconv_t) -1;
if (!uh) uh = g_hash_table_new (g_str_hash, g_str_equal);
uiconv = g_hash_table_lookup (uh, enc);
if (!uiconv) {
uiconv = unicode_iconv_open (enc, "UTF-8");
if (uiconv == (unicode_iconv_t) -1) return uiconv;
g_hash_table_insert (uh, (gpointer) enc, uiconv);
}
return uiconv;
}
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