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gtk2/gdk/x11/gdkfont-x11.c
Owen Taylor 425b9886c9 Start of integration of Erwann Chenede's multihead work from the 
Thu Apr 25 16:51:40 2002  Owen Taylor  <otaylor@redhat.com>

        Start of integration of Erwann Chenede's multihead work
        from the gtk-multihead branch.

        * gdk/gdkdisplay.[ch] gdk/gdkscreen.[ch]
        gdk/x11/gdkdisplay-x11.[ch] gdk/x11/gdkscreen-x11.[ch]
        New classes representing a set of screens with attached
        input devices and a single contiguous area, respectively.

        * gdk/gdk.[ch] gdk/gdkinternals.h gdk/x11/gdkmain-x11.c:
        gdk/x11/gdkprivate-x11.h: Make the initialization interface
        simple _gdk_windowing_init() and do the rest in
        gdk_open_display() calls.

        * gdk/gdk.[ch]: Add gdk_parse_args() which can be used
        to do the display-independent part of initialization
        instead of gdk_init_[check].

        * gdk/gdkcursor.h gdk/gdkfont.h gdk/gdkkeys.h gdk/gdkpixmap.h
        gdk/gdkproperty.h gdk/gdkselection.h gdk/gdkwindow.h:
        Add multihead variants (_for_display(), for_screen()) of functions
        getting information specific to a particular screen screen or
        display.

        * gdk/gdkscreen.[ch]: Add gdk_screen__* variants of functions
        like gdk_rgb_get_colormap() that used to get/list global
        objects.

        * gdk/x11/gdkx.h: Add functions for converting GdkScreen
        and GdkDisplay into the X equivalents.

        * gdk/x11/gdkwindow-x11.c: Removed gdk_window_xid_at_coords()
        not in the headers and unused.

        * configure.in gdk/x11/{gxid.c,gxid_lib.[ch],gdkinput-gxi.c}:
        Remove gxid support ... has not been tested for a long time...
        "xfree" support is more portable to non XFree86.

        * gdk/**.h: Add a GDK_MULTIHEAD_SAFE define that can be
        used to turn off functions that are inherently non-multihead
        safe.

        * gdk/**.c: add GDK_NOTE(multihead, ...) calls when functions
        are used in non-multihead-safe ways.

        * gdk/*.c gdk/x11/*.c: Changes to make the internals of GDK
        multihead safe.
2002-04-25 22:29:14 +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 Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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 1997-2000. 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 <X11/Xlib.h>
#include <X11/Xos.h>
#include <locale.h>
#include <pango/pangox.h>
#include "gdkx.h"
#include "gdkfont.h"
#include "gdkprivate-x11.h"
#include "gdkinternals.h"
#include "gdkdisplay-x11.h"
#include "gdkscreen-x11.h"
typedef struct _GdkFontPrivateX GdkFontPrivateX;
struct _GdkFontPrivateX
{
GdkFontPrivate base;
/* XFontStruct *xfont; */
/* generic pointer point to XFontStruct or XFontSet */
gpointer xfont;
GdkDisplay *display;
GSList *names;
};
static GHashTable *
gdk_font_name_hash_get (GdkDisplay *display)
{
GHashTable *result;
static GQuark font_name_quark = 0;
if (!font_name_quark)
font_name_quark = g_quark_from_static_string ("gdk-font-hash");
result = g_object_get_qdata (G_OBJECT (display), font_name_quark);
if (!result)
{
result = g_hash_table_new (g_str_hash, g_str_equal);
g_object_set_qdata (G_OBJECT (display), font_name_quark, result);
}
return result;
}
static GHashTable *
gdk_fontset_name_hash_get (GdkDisplay *display)
{
GHashTable *result;
static GQuark fontset_name_quark = 0;
if (!fontset_name_quark)
fontset_name_quark = g_quark_from_static_string ("gdk-fontset-hash");
result = g_object_get_qdata (G_OBJECT (display), fontset_name_quark);
if (!result)
{
result = g_hash_table_new (g_str_hash, g_str_equal);
g_object_set_qdata (G_OBJECT (display), fontset_name_quark, result);
}
return result;
}
/**
* gdk_font_get_display:
* @font: the #GdkFont.
*
* Returns the #GdkDisplay for @font.
*
* Returns : the corresponding #GdkDisplay.
**/
GdkDisplay*
gdk_font_get_display (GdkFont* font)
{
return ((GdkFontPrivateX *)font)->display;
}
static void
gdk_font_hash_insert (GdkFontType type,
GdkFont *font,
const gchar *font_name)
{
GdkFontPrivateX *private = (GdkFontPrivateX *)font;
GHashTable *hash = (type == GDK_FONT_FONT) ?
gdk_font_name_hash_get (private->display) : gdk_fontset_name_hash_get (private->display);
private->names = g_slist_prepend (private->names, g_strdup (font_name));
g_hash_table_insert (hash, private->names->data, font);
}
static void
gdk_font_hash_remove (GdkFontType type,
GdkFont *font)
{
GdkFontPrivateX *private = (GdkFontPrivateX *)font;
GSList *tmp_list;
GHashTable *hash = (type == GDK_FONT_FONT) ?
gdk_font_name_hash_get (private->display) : gdk_fontset_name_hash_get (private->display);
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 (GdkDisplay *display,
GdkFontType type,
const gchar *font_name)
{
GdkFont *result;
GHashTable *hash;
g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
hash = (type == GDK_FONT_FONT) ? gdk_font_name_hash_get (display) :
gdk_fontset_name_hash_get (display);
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_for_display (GdkDisplay *display,
const gchar *font_name)
{
GdkFont *font;
GdkFontPrivateX *private;
XFontStruct *xfont;
g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
g_return_val_if_fail (font_name != NULL, NULL);
font = gdk_font_hash_lookup (display, GDK_FONT_FONT, font_name);
if (font)
return font;
xfont = XLoadQueryFont (GDK_DISPLAY_XDISPLAY (display), font_name);
if (xfont == NULL)
return NULL;
font = gdk_font_lookup_for_display (display, xfont->fid);
if (font != NULL)
{
private = (GdkFontPrivateX *) font;
if (xfont != private->xfont)
XFreeFont (GDK_DISPLAY_XDISPLAY (display), xfont);
gdk_font_ref (font);
}
else
{
private = g_new (GdkFontPrivateX, 1);
private->display = display;
private->xfont = xfont;
private->base.ref_count = 1;
private->names = NULL;
font = (GdkFont*) private;
font->type = GDK_FONT_FONT;
font->ascent = xfont->ascent;
font->descent = xfont->descent;
_gdk_xid_table_insert (display, &xfont->fid, font);
}
gdk_font_hash_insert (GDK_FONT_FONT, font, font_name);
return font;
}
GdkFont*
gdk_font_load (const gchar *font_name)
{
return gdk_font_load_for_display (gdk_get_default_display(), font_name);
}
static char *
gdk_font_charset_for_locale (void)
{
static char *charset_map[][2] = {
{ "ANSI_X3.4-1968", "iso8859-1" },
{ "US-ASCII", "iso8859-1" },
{ "ISO-8859-1", "iso8859-1" },
{ "ISO-8859-2", "iso8859-2" },
{ "ISO-8859-3", "iso8859-3" },
{ "ISO-8859-4", "iso8859-4" },
{ "ISO-8859-5", "iso8859-5" },
{ "ISO-8859-6", "iso8859-6" },
{ "ISO-8859-7", "iso8859-7" },
{ "ISO-8859-8", "iso8859-8" },
{ "ISO-8859-9", "iso8859-9" },
{ "UTF-8", "iso8859-1" }
};
const char *codeset;
char *result = NULL;
int i;
g_get_charset (&codeset);
for (i=0; i < G_N_ELEMENTS (charset_map); i++)
if (strcmp (charset_map[i][0], codeset) == 0)
{
result = charset_map[i][1];
break;
}
if (result)
return g_strdup (result);
else
return g_strdup ("iso8859-1");
};
GdkFont *
gdk_font_from_description_for_display (GdkDisplay *display,
PangoFontDescription *font_desc)
{
PangoFontMap *font_map;
PangoFont *font;
GdkFont *result = NULL;
g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
g_return_val_if_fail (font_desc != NULL, NULL);
font_map = pango_x_font_map_for_display (GDK_DISPLAY_XDISPLAY (display));
font = pango_font_map_load_font (font_map, NULL, font_desc);
if (font)
{
gchar *charset = gdk_font_charset_for_locale ();
gint n_subfonts;
PangoXSubfont *subfont_ids;
gint *subfont_charsets;
n_subfonts = pango_x_list_subfonts (font, &charset, 1,
&subfont_ids, &subfont_charsets);
if (n_subfonts > 0)
{
gchar *xlfd = pango_x_font_subfont_xlfd (font, subfont_ids[0]);
result = gdk_font_load_for_display (display, xlfd);
g_free (xlfd);
}
g_free (subfont_ids);
g_free (subfont_charsets);
g_free (charset);
g_object_unref (G_OBJECT (font));
}
return result;
}
/**
* gdk_font_from_description:
* @font_desc: a #PangoFontDescription.
*
* Load a #GdkFont based on a Pango font description. This font will
* only be an approximation of the Pango font, and
* internationalization will not be handled correctly. This function
* should only be used for legacy code that cannot be easily converted
* to use Pango. Using Pango directly will produce better results.
*
* Return value: the newly loaded font, or %NULL if the font
* cannot be loaded.
**/
GdkFont*
gdk_font_from_description (PangoFontDescription *font_desc)
{
return gdk_font_from_description_for_display (gdk_get_default_display (),font_desc);
}
GdkFont *
gdk_fontset_load_for_display (GdkDisplay *display,
const gchar *fontset_name)
{
GdkFont *font;
GdkFontPrivateX *private;
XFontSet fontset;
gint missing_charset_count;
gchar **missing_charset_list;
gchar *def_string;
g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
font = gdk_font_hash_lookup (display, GDK_FONT_FONTSET, fontset_name);
if (font)
return font;
private = g_new (GdkFontPrivateX, 1);
font = (GdkFont*) private;
private->display = display;
fontset = XCreateFontSet (GDK_DISPLAY_XDISPLAY (display), fontset_name,
&missing_charset_list, &missing_charset_count,
&def_string);
if (missing_charset_count)
{
gint i;
g_printerr ("The font \"%s\" does not support all the required character sets for the current locale \"%s\"\n",
fontset_name, setlocale (LC_ALL, NULL));
for (i=0;i<missing_charset_count;i++)
g_printerr (" (Missing character set \"%s\")\n",
missing_charset_list[i]);
XFreeStringList (missing_charset_list);
}
private->base.ref_count = 1;
if (!fontset)
{
g_free (font);
return NULL;
}
else
{
gint num_fonts;
gint i;
XFontStruct **font_structs;
gchar **font_names;
private->xfont = fontset;
font->type = GDK_FONT_FONTSET;
num_fonts = XFontsOfFontSet (fontset, &font_structs, &font_names);
font->ascent = font->descent = 0;
for (i = 0; i < num_fonts; i++)
{
font->ascent = MAX (font->ascent, font_structs[i]->ascent);
font->descent = MAX (font->descent, font_structs[i]->descent);
}
private->names = NULL;
gdk_font_hash_insert (GDK_FONT_FONTSET, font, fontset_name);
return font;
}
}
GdkFont*
gdk_fontset_load (const gchar *fontset_name)
{
return gdk_fontset_load_for_display (gdk_get_default_display (), fontset_name);
}
void
_gdk_font_destroy (GdkFont *font)
{
GdkFontPrivateX *private = (GdkFontPrivateX *)font;
gdk_font_hash_remove (font->type, font);
switch (font->type)
{
case GDK_FONT_FONT:
_gdk_xid_table_remove (private->display, ((XFontStruct *) private->xfont)->fid);
XFreeFont (GDK_DISPLAY_XDISPLAY (private->display),
(XFontStruct *) private->xfont);
break;
case GDK_FONT_FONTSET:
XFreeFontSet (GDK_DISPLAY_XDISPLAY (private->display),
(XFontSet) private->xfont);
break;
default:
g_error ("unknown font type.");
break;
}
g_free (font);
}
gint
_gdk_font_strlen (GdkFont *font,
const gchar *str)
{
GdkFontPrivateX *font_private;
gint length = 0;
g_return_val_if_fail (font != NULL, -1);
g_return_val_if_fail (str != NULL, -1);
font_private = (GdkFontPrivateX*) font;
if (font->type == GDK_FONT_FONT)
{
XFontStruct *xfont = (XFontStruct *) font_private->xfont;
if ((xfont->min_byte1 == 0) && (xfont->max_byte1 == 0))
{
length = strlen (str);
}
else
{
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 GdkFontPrivateX *font_private;
g_return_val_if_fail (font != NULL, 0);
font_private = (const GdkFontPrivateX*) font;
if (font->type == GDK_FONT_FONT)
{
return ((XFontStruct *) font_private->xfont)->fid;
}
else
{
return 0;
}
}
gboolean
gdk_font_equal (const GdkFont *fonta,
const GdkFont *fontb)
{
const GdkFontPrivateX *privatea;
const GdkFontPrivateX *privateb;
g_return_val_if_fail (fonta != NULL, FALSE);
g_return_val_if_fail (fontb != NULL, FALSE);
privatea = (const GdkFontPrivateX*) fonta;
privateb = (const GdkFontPrivateX*) fontb;
if (fonta->type == GDK_FONT_FONT && fontb->type == GDK_FONT_FONT)
{
return (((XFontStruct *) privatea->xfont)->fid ==
((XFontStruct *) privateb->xfont)->fid);
}
else if (fonta->type == GDK_FONT_FONTSET && fontb->type == GDK_FONT_FONTSET)
{
gchar *namea, *nameb;
namea = XBaseFontNameListOfFontSet((XFontSet) privatea->xfont);
nameb = XBaseFontNameListOfFontSet((XFontSet) privateb->xfont);
return (strcmp(namea, nameb) == 0);
}
else
/* fontset != font */
return 0;
}
gint
gdk_text_width (GdkFont *font,
const gchar *text,
gint text_length)
{
GdkFontPrivateX *private;
gint width;
XFontStruct *xfont;
XFontSet fontset;
g_return_val_if_fail (font != NULL, -1);
g_return_val_if_fail (text != NULL, -1);
private = (GdkFontPrivateX*) font;
switch (font->type)
{
case GDK_FONT_FONT:
xfont = (XFontStruct *) private->xfont;
if ((xfont->min_byte1 == 0) && (xfont->max_byte1 == 0))
{
width = XTextWidth (xfont, text, text_length);
}
else
{
width = XTextWidth16 (xfont, (XChar2b *) text, text_length / 2);
}
break;
case GDK_FONT_FONTSET:
fontset = (XFontSet) private->xfont;
width = XmbTextEscapement (fontset, text, text_length);
break;
default:
width = 0;
}
return width;
}
gint
gdk_text_width_wc (GdkFont *font,
const GdkWChar *text,
gint text_length)
{
GdkFontPrivateX *private;
gint width;
XFontStruct *xfont;
XFontSet fontset;
g_return_val_if_fail (font != NULL, -1);
g_return_val_if_fail (text != NULL, -1);
private = (GdkFontPrivateX*) font;
switch (font->type)
{
case GDK_FONT_FONT:
xfont = (XFontStruct *) private->xfont;
if ((xfont->min_byte1 == 0) && (xfont->max_byte1 == 0))
{
gchar *text_8bit;
gint i;
text_8bit = g_new (gchar, text_length);
for (i=0; i<text_length; i++) text_8bit[i] = text[i];
width = XTextWidth (xfont, text_8bit, text_length);
g_free (text_8bit);
}
else
{
width = 0;
}
break;
case GDK_FONT_FONTSET:
if (sizeof(GdkWChar) == sizeof(wchar_t))
{
fontset = (XFontSet) private->xfont;
width = XwcTextEscapement (fontset, (wchar_t *)text, text_length);
}
else
{
wchar_t *text_wchar;
gint i;
fontset = (XFontSet) private->xfont;
text_wchar = g_new(wchar_t, text_length);
for (i=0; i<text_length; i++) text_wchar[i] = text[i];
width = XwcTextEscapement (fontset, text_wchar, text_length);
g_free (text_wchar);
}
break;
default:
width = 0;
}
return width;
}
void
gdk_text_extents (GdkFont *font,
const gchar *text,
gint text_length,
gint *lbearing,
gint *rbearing,
gint *width,
gint *ascent,
gint *descent)
{
GdkFontPrivateX *private;
XCharStruct overall;
XFontStruct *xfont;
XFontSet fontset;
XRectangle ink, logical;
int direction;
int font_ascent;
int font_descent;
g_return_if_fail (font != NULL);
g_return_if_fail (text != NULL);
private = (GdkFontPrivateX*) font;
switch (font->type)
{
case GDK_FONT_FONT:
xfont = (XFontStruct *) private->xfont;
if ((xfont->min_byte1 == 0) && (xfont->max_byte1 == 0))
{
XTextExtents (xfont, text, text_length,
&direction, &font_ascent, &font_descent,
&overall);
}
else
{
XTextExtents16 (xfont, (XChar2b *) text, text_length / 2,
&direction, &font_ascent, &font_descent,
&overall);
}
if (lbearing)
*lbearing = overall.lbearing;
if (rbearing)
*rbearing = overall.rbearing;
if (width)
*width = overall.width;
if (ascent)
*ascent = overall.ascent;
if (descent)
*descent = overall.descent;
break;
case GDK_FONT_FONTSET:
fontset = (XFontSet) private->xfont;
XmbTextExtents (fontset, text, text_length, &ink, &logical);
if (lbearing)
*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;
}
}
void
gdk_text_extents_wc (GdkFont *font,
const GdkWChar *text,
gint text_length,
gint *lbearing,
gint *rbearing,
gint *width,
gint *ascent,
gint *descent)
{
GdkFontPrivateX *private;
XCharStruct overall;
XFontStruct *xfont;
XFontSet fontset;
XRectangle ink, logical;
int direction;
int font_ascent;
int font_descent;
g_return_if_fail (font != NULL);
g_return_if_fail (text != NULL);
private = (GdkFontPrivateX*) font;
switch (font->type)
{
case GDK_FONT_FONT:
{
gchar *text_8bit;
gint i;
xfont = (XFontStruct *) private->xfont;
g_return_if_fail ((xfont->min_byte1 == 0) && (xfont->max_byte1 == 0));
text_8bit = g_new (gchar, text_length);
for (i=0; i<text_length; i++)
text_8bit[i] = text[i];
XTextExtents (xfont, text_8bit, text_length,
&direction, &font_ascent, &font_descent,
&overall);
g_free (text_8bit);
if (lbearing)
*lbearing = overall.lbearing;
if (rbearing)
*rbearing = overall.rbearing;
if (width)
*width = overall.width;
if (ascent)
*ascent = overall.ascent;
if (descent)
*descent = overall.descent;
break;
}
case GDK_FONT_FONTSET:
fontset = (XFontSet) private->xfont;
if (sizeof(GdkWChar) == sizeof(wchar_t))
XwcTextExtents (fontset, (wchar_t *)text, text_length, &ink, &logical);
else
{
wchar_t *text_wchar;
gint i;
text_wchar = g_new (wchar_t, text_length);
for (i = 0; i < text_length; i++)
text_wchar[i] = text[i];
XwcTextExtents (fontset, text_wchar, text_length, &ink, &logical);
g_free (text_wchar);
}
if (lbearing)
*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;
}
}
Display *
gdk_x11_font_get_xdisplay (GdkFont *font)
{
g_return_val_if_fail (font != NULL, NULL);
return GDK_DISPLAY_XDISPLAY (((GdkFontPrivateX *)font)->display);
}
gpointer
gdk_x11_font_get_xfont (GdkFont *font)
{
g_return_val_if_fail (font != NULL, NULL);
return ((GdkFontPrivateX *)font)->xfont;
}
/**
* gdk_x11_font_get_name:
* @font: a #GdkFont.
*
* Return the X Logical Font Description (for font->type == GDK_FONT_FONT)
* or comma separated list of XLFDs (for font->type == GDK_FONT_FONTSET)
* that was used to load the font. If the same font was loaded
* via multiple names, which name is returned is undefined.
*
* Return value: the name of the font. This string is owned
* by GDK and must not be modified or freed.
**/
G_CONST_RETURN char *
gdk_x11_font_get_name (GdkFont *font)
{
GdkFontPrivateX *private = (GdkFontPrivateX *)font;
g_return_val_if_fail (font != NULL, NULL);
g_assert (private->names);
return private->names->data;
}
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