/* Functions for handle font changes dynamically.
- Copyright (C) 2009
+ Copyright (C) 2009, 2010
Free Software Foundation, Inc.
This file is part of GNU Emacs.
#include "xterm.h"
#include "xsettings.h"
#include "frame.h"
+#include "keyboard.h"
#include "blockinput.h"
#include "termhooks.h"
#include "termopts.h"
static struct x_display_info *first_dpyinfo;
static Lisp_Object Qfont_name, Qfont_render;
static int use_system_font;
+static Lisp_Object Vxft_settings;
+
#ifdef HAVE_GCONF
static GConfClient *gconf_client;
XUngrabServer (dpy);
}
+enum {
+ SEEN_AA = 0x01,
+ SEEN_HINTING = 0x02,
+ SEEN_RGBA = 0x04,
+ SEEN_LCDFILTER = 0x08,
+ SEEN_HINTSTYLE = 0x10,
+ SEEN_DPI = 0x20,
+};
struct xsettings
{
FcBool aa, hinting;
int rgba, lcdfilter, hintstyle;
double dpi;
+
+ unsigned seen;
};
#define SWAP32(nr) (((nr) << 24) | (((nr) << 8) & 0xff0000) \
2 CARD16 green
2 CARD16 alpha
+ Returns non-zero if some Xft settings was seen, zero otherwise.
*/
static int
{
++settings_seen;
if (strcmp (name, "Xft/Antialias") == 0)
- settings->aa = ival != 0;
+ {
+ settings->seen |= SEEN_AA;
+ settings->aa = ival != 0;
+ }
else if (strcmp (name, "Xft/Hinting") == 0)
- settings->hinting = ival != 0;
+ {
+ settings->seen |= SEEN_HINTING;
+ settings->hinting = ival != 0;
+ }
else if (strcmp (name, "Xft/HintStyle") == 0)
{
+ settings->seen |= SEEN_HINTSTYLE;
if (strcmp (sval, "hintnone") == 0)
settings->hintstyle = FC_HINT_NONE;
else if (strcmp (sval, "hintslight") == 0)
settings->hintstyle = FC_HINT_MEDIUM;
else if (strcmp (sval, "hintfull") == 0)
settings->hintstyle = FC_HINT_FULL;
+ else
+ settings->seen &= ~SEEN_HINTSTYLE;
}
else if (strcmp (name, "Xft/RGBA") == 0)
{
+ settings->seen |= SEEN_RGBA;
if (strcmp (sval, "none") == 0)
settings->rgba = FC_RGBA_NONE;
else if (strcmp (sval, "rgb") == 0)
settings->rgba = FC_RGBA_VRGB;
else if (strcmp (sval, "vbgr") == 0)
settings->rgba = FC_RGBA_VBGR;
+ else
+ settings->seen &= ~SEEN_RGBA;
}
else if (strcmp (name, "Xft/DPI") == 0)
- settings->dpi = (double)ival/1024.0;
+ {
+ settings->seen |= SEEN_DPI;
+ settings->dpi = (double)ival/1024.0;
+ }
else if (strcmp (name, "Xft/lcdfilter") == 0)
{
+ settings->seen |= SEEN_LCDFILTER;
if (strcmp (sval, "none") == 0)
settings->lcdfilter = FC_LCD_NONE;
else if (strcmp (sval, "lcddefault") == 0)
settings->lcdfilter = FC_LCD_DEFAULT;
+ else
+ settings->seen &= ~SEEN_LCDFILTER;
}
}
}
- return Success;
+ return settings_seen;
}
static int
x_uncatch_errors ();
- return rc == Success;
+ return rc != 0;
}
FcPattern *pat;
struct xsettings settings, oldsettings;
int changed = 0;
+ char buf[256];
if (!read_xft_settings (dpyinfo, &settings))
return;
memset (&oldsettings, 0, sizeof (oldsettings));
-
+ buf[0] = '\0';
pat = FcPatternCreate ();
XftDefaultSubstitute (dpyinfo->display,
XScreenNumberOfScreen (dpyinfo->screen),
FcPatternGetInteger (pat, FC_RGBA, 0, &oldsettings.rgba);
FcPatternGetDouble (pat, FC_DPI, 0, &oldsettings.dpi);
- if (oldsettings.aa != settings.aa)
+ if ((settings.seen & SEEN_AA) != 0 && oldsettings.aa != settings.aa)
{
FcPatternDel (pat, FC_ANTIALIAS);
FcPatternAddBool (pat, FC_ANTIALIAS, settings.aa);
++changed;
+ oldsettings.aa = settings.aa;
}
- if (oldsettings.hinting != settings.hinting)
+ sprintf (buf, "Antialias: %d", oldsettings.aa);
+
+ if ((settings.seen & SEEN_HINTING) != 0
+ && oldsettings.hinting != settings.hinting)
{
FcPatternDel (pat, FC_HINTING);
FcPatternAddBool (pat, FC_HINTING, settings.hinting);
++changed;
+ oldsettings.hinting = settings.hinting;
}
- if (oldsettings.rgba != settings.rgba)
+ if (strlen (buf) > 0) strcat (buf, ", ");
+ sprintf (buf+strlen (buf), "Hinting: %d", oldsettings.hinting);
+ if ((settings.seen & SEEN_RGBA) != 0 && oldsettings.rgba != settings.rgba)
{
FcPatternDel (pat, FC_RGBA);
FcPatternAddInteger (pat, FC_RGBA, settings.rgba);
+ oldsettings.rgba = settings.rgba;
++changed;
}
+ if (strlen (buf) > 0) strcat (buf, ", ");
+ sprintf (buf+strlen (buf), "RGBA: %d", oldsettings.rgba);
+
/* Older fontconfig versions don't have FC_LCD_FILTER. */
- if (oldsettings.lcdfilter != settings.lcdfilter)
+ if ((settings.seen & SEEN_LCDFILTER) != 0
+ && oldsettings.lcdfilter != settings.lcdfilter)
{
FcPatternDel (pat, FC_LCD_FILTER);
FcPatternAddInteger (pat, FC_LCD_FILTER, settings.lcdfilter);
++changed;
+ oldsettings.lcdfilter = settings.lcdfilter;
}
- if (oldsettings.hintstyle != settings.hintstyle)
+ if (strlen (buf) > 0) strcat (buf, ", ");
+ sprintf (buf+strlen (buf), "LCDFilter: %d", oldsettings.lcdfilter);
+
+ if ((settings.seen & SEEN_HINTSTYLE) != 0
+ && oldsettings.hintstyle != settings.hintstyle)
{
FcPatternDel (pat, FC_HINT_STYLE);
FcPatternAddInteger (pat, FC_HINT_STYLE, settings.hintstyle);
++changed;
+ oldsettings.hintstyle = settings.hintstyle;
}
- if (oldsettings.dpi != settings.dpi)
+ if (strlen (buf) > 0) strcat (buf, ", ");
+ sprintf (buf+strlen (buf), "Hintstyle: %d", oldsettings.hintstyle);
+
+ if ((settings.seen & SEEN_DPI) != 0 && oldsettings.dpi != settings.dpi
+ && settings.dpi > 0)
{
Lisp_Object frame, tail;
FcPatternDel (pat, FC_DPI);
FcPatternAddDouble (pat, FC_DPI, settings.dpi);
++changed;
-
+ oldsettings.dpi = settings.dpi;
+
/* Change the DPI on this display and all frames on the display. */
dpyinfo->resy = dpyinfo->resx = settings.dpi;
FOR_EACH_FRAME (tail, frame)
XFRAME (frame)->resy = XFRAME (frame)->resx = settings.dpi;
}
+ if (strlen (buf) > 0) strcat (buf, ", ");
+ sprintf (buf+strlen (buf), "DPI: %lf", oldsettings.dpi);
+
if (changed)
{
XftDefaultSet (dpyinfo->display, pat);
if (send_event_p)
store_font_changed_event (Qfont_render,
XCAR (dpyinfo->name_list_element));
+ Vxft_settings = make_string (buf, strlen (buf));
}
else
FcPatternDestroy (pat);
doc: /* *Non-nil means to use the system defined font. */);
use_system_font = 0;
+ DEFVAR_LISP ("xft-settings", &Vxft_settings,
+ doc: /* Font settings applied to Xft. */);
+ Vxft_settings = make_string ("", 0);
+
#ifdef HAVE_XFT
Fprovide (intern_c_string ("font-render-setting"), Qnil);
#ifdef HAVE_GCONF