/* Functions for handling font and other changes dynamically.
-Copyright (C) 2009-2013 Free Software Foundation, Inc.
+Copyright (C) 2009-2015 Free Software Foundation, Inc.
This file is part of GNU Emacs.
#include <float.h>
#include <limits.h>
#include <fcntl.h>
+
+#include <byteswap.h>
+
#include "lisp.h"
#include "xterm.h"
#include "xsettings.h"
static char *current_mono_font;
static char *current_font;
static struct x_display_info *first_dpyinfo;
-static Lisp_Object Qmonospace_font_name, Qfont_name, Qfont_render,
- Qtool_bar_style;
static Lisp_Object current_tool_bar_style;
/* Store an config changed event in to the event queue. */
kbd_buffer_store_event (&event);
}
-/* Return non-zero if DPYINFO is still valid. */
-static int
+/* Return true if DPYINFO is still valid. */
+static bool
dpyinfo_valid (struct x_display_info *dpyinfo)
{
- int found = 0;
+ bool found = false;
if (dpyinfo != NULL)
{
struct x_display_info *d;
if (current_mono_font != NULL && strcmp (newfont, current_mono_font) == 0)
return; /* No change. */
- xfree (current_mono_font);
- current_mono_font = xstrdup (newfont);
+ dupstring (¤t_mono_font, newfont);
if (dpyinfo_valid (first_dpyinfo) && use_system_font)
{
if (current_font != NULL && strcmp (newfont, current_font) == 0)
return; /* No change. */
- xfree (current_font);
- current_font = xstrdup (newfont);
+ dupstring (¤t_font, newfont);
if (dpyinfo_valid (first_dpyinfo))
{
SEEN_HINTSTYLE = 0x10,
SEEN_DPI = 0x20,
SEEN_FONT = 0x40,
- SEEN_TB_STYLE = 0x80,
+ SEEN_TB_STYLE = 0x80
};
struct xsettings
{
XUngrabServer (dpy);
}
-#define SWAP32(nr) (((nr) << 24) | (((nr) << 8) & 0xff0000) \
- | (((nr) >> 8) & 0xff00) | ((nr) >> 24))
-#define SWAP16(nr) (((nr) << 8) | ((nr) >> 8))
#define PAD(nr) (((nr) + 3) & ~3)
/* Parse xsettings and extract those that deal with Xft.
static int
parse_settings (unsigned char *prop,
- long unsigned int bytes,
+ unsigned long bytes,
struct xsettings *settings)
{
Lisp_Object byteorder = Fbyteorder ();
/* First 4 bytes is a serial number, skip that. */
- if (bytes < 12) return BadLength;
+ if (bytes < 12) return settings_seen;
memcpy (&n_settings, prop+8, 4);
- if (my_bo != that_bo) n_settings = SWAP32 (n_settings);
+ if (my_bo != that_bo) n_settings = bswap_32 (n_settings);
bytes_parsed = 12;
memset (settings, 0, sizeof (*settings));
CARD32 vlen, ival = 0;
char name[128]; /* The names we are looking for are not this long. */
char sval[128]; /* The values we are looking for are not this long. */
- int want_this;
+ bool want_this;
int to_cpy;
sval[0] = '\0';
memcpy (&nlen, prop+bytes_parsed, 2);
bytes_parsed += 2;
- if (my_bo != that_bo) nlen = SWAP16 (nlen);
- if (bytes_parsed+nlen > bytes) return BadLength;
- to_cpy = nlen > 127 ? 127 : nlen;
+ if (my_bo != that_bo) nlen = bswap_16 (nlen);
+ if (bytes_parsed + nlen > bytes) return settings_seen;
+ to_cpy = min (nlen, sizeof name - 1);
memcpy (name, prop+bytes_parsed, to_cpy);
name[to_cpy] = '\0';
bytes_parsed = PAD (bytes_parsed);
bytes_parsed += 4; /* Skip serial for this value */
- if (bytes_parsed > bytes) return BadLength;
+ if (bytes_parsed > bytes) return settings_seen;
- want_this =
+ want_this = strcmp (XSETTINGS_TOOL_BAR_STYLE, name) == 0;
#ifdef HAVE_XFT
- (nlen > 6 && strncmp (name, "Xft/", 4) == 0)
- || strcmp (XSETTINGS_FONT_NAME, name) == 0
- ||
+ if ((nlen > 6 && memcmp (name, "Xft/", 4) == 0)
+ || strcmp (XSETTINGS_FONT_NAME, name) == 0)
+ want_this = true;
#endif
- strcmp (XSETTINGS_TOOL_BAR_STYLE, name) == 0;
switch (type)
{
case 0: /* Integer */
- if (bytes_parsed+4 > bytes) return BadLength;
+ if (bytes_parsed + 4 > bytes) return settings_seen;
if (want_this)
{
memcpy (&ival, prop+bytes_parsed, 4);
- if (my_bo != that_bo) ival = SWAP32 (ival);
+ if (my_bo != that_bo) ival = bswap_32 (ival);
}
bytes_parsed += 4;
break;
case 1: /* String */
- if (bytes_parsed+4 > bytes) return BadLength;
+ if (bytes_parsed + 4 > bytes) return settings_seen;
memcpy (&vlen, prop+bytes_parsed, 4);
bytes_parsed += 4;
- if (my_bo != that_bo) vlen = SWAP32 (vlen);
+ if (my_bo != that_bo) vlen = bswap_32 (vlen);
if (want_this)
{
- to_cpy = vlen > 127 ? 127 : vlen;
+ to_cpy = min (vlen, sizeof sval - 1);
memcpy (sval, prop+bytes_parsed, to_cpy);
sval[to_cpy] = '\0';
}
case 2: /* RGB value */
/* No need to parse this */
- if (bytes_parsed+8 > bytes) return BadLength;
+ if (bytes_parsed + 8 > bytes) return settings_seen;
bytes_parsed += 8; /* 4 values (r, b, g, alpha), 2 bytes each. */
break;
default: /* Parse Error */
- return BadValue;
+ return settings_seen;
}
if (want_this)
{
- ++settings_seen;
if (strcmp (name, XSETTINGS_TOOL_BAR_STYLE) == 0)
{
- settings->tb_style = xstrdup (sval);
+ dupstring (&settings->tb_style, sval);
settings->seen |= SEEN_TB_STYLE;
}
#ifdef HAVE_XFT
else if (strcmp (name, XSETTINGS_FONT_NAME) == 0)
{
- settings->font = xstrdup (sval);
+ dupstring (&settings->font, sval);
settings->seen |= SEEN_FONT;
}
else if (strcmp (name, "Xft/Antialias") == 0)
settings->seen &= ~SEEN_LCDFILTER;
}
#endif /* HAVE_XFT */
+ else
+ want_this = false;
+ settings_seen += want_this;
}
}
/* Read settings from the XSettings property window on display for DPYINFO.
Store settings read in SETTINGS.
- Return non-zero if successful, zero if not. */
+ Return true iff successful. */
-static int
+static bool
read_settings (struct x_display_info *dpyinfo, struct xsettings *settings)
{
Atom act_type;
unsigned char *prop = NULL;
Display *dpy = dpyinfo->display;
int rc;
+ bool got_settings = false;
x_catch_errors (dpy);
rc = XGetWindowProperty (dpy,
if (rc == Success && prop != NULL && act_form == 8 && nitems > 0
&& act_type == dpyinfo->Xatom_xsettings_prop)
- rc = parse_settings (prop, nitems, settings);
+ got_settings = parse_settings (prop, nitems, settings) != 0;
XFree (prop);
x_uncatch_errors ();
- return rc != 0;
+ return got_settings;
}
/* Apply Xft settings in SETTINGS to the Xft library.
- If SEND_EVENT_P is non-zero store a Lisp event that Xft settings changed. */
+ Store a Lisp event that Xft settings changed. */
static void
apply_xft_settings (struct x_display_info *dpyinfo,
- int send_event_p,
struct xsettings *settings)
{
#ifdef HAVE_XFT
FcPattern *pat;
struct xsettings oldsettings;
- int changed = 0;
+ bool changed = false;
memset (&oldsettings, 0, sizeof (oldsettings));
pat = FcPatternCreate ();
{
FcPatternDel (pat, FC_ANTIALIAS);
FcPatternAddBool (pat, FC_ANTIALIAS, settings->aa);
- ++changed;
+ changed = true;
oldsettings.aa = settings->aa;
}
{
FcPatternDel (pat, FC_HINTING);
FcPatternAddBool (pat, FC_HINTING, settings->hinting);
- ++changed;
+ changed = true;
oldsettings.hinting = settings->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;
+ changed = true;
}
/* Older fontconfig versions don't have FC_LCD_FILTER. */
{
FcPatternDel (pat, FC_LCD_FILTER);
FcPatternAddInteger (pat, FC_LCD_FILTER, settings->lcdfilter);
- ++changed;
+ changed = true;
oldsettings.lcdfilter = settings->lcdfilter;
}
{
FcPatternDel (pat, FC_HINT_STYLE);
FcPatternAddInteger (pat, FC_HINT_STYLE, settings->hintstyle);
- ++changed;
+ changed = true;
oldsettings.hintstyle = settings->hintstyle;
}
#endif
{
FcPatternDel (pat, FC_DPI);
FcPatternAddDouble (pat, FC_DPI, settings->dpi);
- ++changed;
+ changed = true;
oldsettings.dpi = settings->dpi;
/* Changing the DPI on this display affects all frames on it.
{
static char const format[] =
"Antialias: %d, Hinting: %d, RGBA: %d, LCDFilter: %d, "
- "Hintstyle: %d, DPI: %lf";
+ "Hintstyle: %d, DPI: %f";
enum
{
d_formats = 5,
max_f_integer_digits = DBL_MAX_10_EXP + 1,
f_precision = 6,
lf_growth = (sizeof "-." + max_f_integer_digits + f_precision
- - sizeof "%lf")
+ - sizeof "%f")
};
char buf[sizeof format + d_formats * d_growth + lf_formats * lf_growth];
XftDefaultSet (dpyinfo->display, pat);
- if (send_event_p)
- store_config_changed_event (Qfont_render,
- XCAR (dpyinfo->name_list_element));
+ store_config_changed_event (Qfont_render,
+ XCAR (dpyinfo->name_list_element));
Vxft_settings
= make_formatted_string (buf, format,
oldsettings.aa, oldsettings.hinting,
}
/* Read XSettings from the display for DPYINFO.
- If SEND_EVENT_P is non-zero store a Lisp event settings that changed. */
+ If SEND_EVENT_P store a Lisp event settings that changed. */
static void
-read_and_apply_settings (struct x_display_info *dpyinfo, int send_event_p)
+read_and_apply_settings (struct x_display_info *dpyinfo, bool send_event_p)
{
struct xsettings settings;
if (!read_settings (dpyinfo, &settings))
return;
- apply_xft_settings (dpyinfo, True, &settings);
+ apply_xft_settings (dpyinfo, &settings);
if (settings.seen & SEEN_TB_STYLE)
{
if (send_event_p)
if (send_event_p)
store_font_name_changed (settings.font);
else
- {
- xfree (current_font);
- current_font = xstrdup (settings.font);
- }
+ dupstring (¤t_font, settings.font);
xfree (settings.font);
}
#endif
/* Check if EVENT for the display in DPYINFO is XSettings related. */
void
-xft_settings_event (struct x_display_info *dpyinfo, XEvent *event)
+xft_settings_event (struct x_display_info *dpyinfo, const XEvent *event)
{
- int check_window_p = 0;
- int apply_settings = 0;
+ bool check_window_p = false, apply_settings_p = false;
switch (event->type)
{
case DestroyNotify:
if (dpyinfo->xsettings_window == event->xany.window)
- check_window_p = 1;
+ check_window_p = true;
break;
case ClientMessage:
if (event->xclient.message_type == dpyinfo->Xatom_xsettings_mgr
&& event->xclient.data.l[1] == dpyinfo->Xatom_xsettings_sel
&& event->xclient.window == dpyinfo->root_window)
- check_window_p = 1;
+ check_window_p = true;
break;
case PropertyNotify:
if (event->xproperty.window == dpyinfo->xsettings_window
&& event->xproperty.state == PropertyNewValue
&& event->xproperty.atom == dpyinfo->Xatom_xsettings_prop)
- apply_settings = 1;
+ apply_settings_p = true;
break;
}
dpyinfo->xsettings_window = None;
get_prop_window (dpyinfo);
if (dpyinfo->xsettings_window != None)
- apply_settings = 1;
+ apply_settings_p = true;
}
- if (apply_settings)
- read_and_apply_settings (dpyinfo, True);
+ if (apply_settings_p)
+ read_and_apply_settings (dpyinfo, true);
}
/* Initialize GSettings and read startup values. */
{
#ifdef HAVE_GSETTINGS
GVariant *val;
- const gchar *const *schemas;
- int schema_found = 0;
+ bool schema_found = false;
-#ifdef HAVE_G_TYPE_INIT
+#if ! GLIB_CHECK_VERSION (2, 36, 0)
g_type_init ();
#endif
- schemas = g_settings_list_schemas ();
- if (schemas == NULL) return;
- while (! schema_found && *schemas != NULL)
- schema_found = strcmp (*schemas++, GSETTINGS_SCHEMA) == 0;
+#if GLIB_CHECK_VERSION (2, 32, 0)
+ {
+ GSettingsSchema *sc = g_settings_schema_source_lookup
+ (g_settings_schema_source_get_default (),
+ GSETTINGS_SCHEMA,
+ true);
+ schema_found = sc != NULL;
+ if (sc) g_settings_schema_unref (sc);
+ }
+#else
+ {
+ const gchar *const *schemas = g_settings_list_schemas ();
+ if (schemas == NULL) return;
+ while (! schema_found && *schemas != NULL)
+ schema_found = strcmp (*schemas++, GSETTINGS_SCHEMA) == 0;
+ }
+#endif
if (!schema_found) return;
gsettings_client = g_settings_new (GSETTINGS_SCHEMA);
{
g_variant_ref_sink (val);
if (g_variant_is_of_type (val, G_VARIANT_TYPE_STRING))
- current_mono_font = xstrdup (g_variant_get_string (val, NULL));
+ dupstring (¤t_mono_font, g_variant_get_string (val, NULL));
g_variant_unref (val);
}
{
g_variant_ref_sink (val);
if (g_variant_is_of_type (val, G_VARIANT_TYPE_STRING))
- current_font = xstrdup (g_variant_get_string (val, NULL));
+ dupstring (¤t_font, g_variant_get_string (val, NULL));
g_variant_unref (val);
}
#endif /* HAVE_XFT */
#if defined (HAVE_GCONF)
char *s;
-#ifdef HAVE_G_TYPE_INIT
+#if ! GLIB_CHECK_VERSION (2, 36, 0)
g_type_init ();
#endif
s = gconf_client_get_string (gconf_client, GCONF_MONO_FONT, NULL);
if (s)
{
- current_mono_font = xstrdup (s);
+ dupstring (¤t_mono_font, s);
g_free (s);
}
s = gconf_client_get_string (gconf_client, GCONF_FONT_NAME, NULL);
if (s)
{
- current_font = xstrdup (s);
+ dupstring (¤t_font, s);
g_free (s);
}
gconf_client_add_dir (gconf_client,
get_prop_window (dpyinfo);
if (dpyinfo->xsettings_window != None)
- read_and_apply_settings (dpyinfo, False);
+ read_and_apply_settings (dpyinfo, false);
unblock_input ();
}
When this is non-nil and the system defined fixed width font changes, we
update frames dynamically.
If this variable is nil, Emacs ignores system font changes. */);
- use_system_font = 0;
+ use_system_font = false;
DEFVAR_LISP ("xft-settings", Vxft_settings,
doc: /* Font settings applied to Xft. */);