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mutter/src/eggaccelerators.c
Elijah Newren 32d4bd6b63 Patch from Kjartan Maraas to fix a lot of tiny issues (unused variable 
2006-01-20  Elijah Newren  <newren gmail com>

	* src/async-getprop.c:
	* src/common.h:
	* src/display.c:
	* src/eggaccelerators.c:
	* src/frames.c:
	* src/gradient.c:
	* src/iconcache.c:
	* src/keybindings.c:
	* src/metaaccellabel.c:
	* src/place.c:
	* src/prefs.c:
	* src/preview-widget.c:
	* src/screen.c:
	* src/session.c:
	* src/stack.c:
	* src/tabpopup.c:
	* src/theme-viewer.c:
	* src/theme.c:
	* src/window-props.c:
	* src/window.c:
	* src/workspace.c:
	* src/tools/metacity-window-demo.c:
	* src/wm-tester/test-gravity.c:
	* src/wm-tester/test-resizing.c:
	* src/wm-tester/test-size-hints.c:
	Patch from Kjartan Maraas to fix a lot of tiny issues (unused
	variable removal, making unused variables used again, correction
	of types passed/declared for printf arguments, removal of unneeded
	breaks and returns, dead code removal, dead code revival, renaming
	to prevent shadowed variables, declaring unexported functions as
	static) spotted by the intel compiler.  #321439
2006-01-20 22:03:56 +00:00

658 lines
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/* eggaccelerators.c
* Copyright (C) 2002 Red Hat, Inc.; Copyright 1998, 2001 Tim Janik
* Developed by Havoc Pennington, Tim Janik
*
* 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.
*/
#include "eggaccelerators.h"
#include <string.h>
#include <gdk/gdkx.h>
#include <gdk/gdkkeysyms.h>
enum
{
EGG_MODMAP_ENTRY_SHIFT = 0,
EGG_MODMAP_ENTRY_LOCK = 1,
EGG_MODMAP_ENTRY_CONTROL = 2,
EGG_MODMAP_ENTRY_MOD1 = 3,
EGG_MODMAP_ENTRY_MOD2 = 4,
EGG_MODMAP_ENTRY_MOD3 = 5,
EGG_MODMAP_ENTRY_MOD4 = 6,
EGG_MODMAP_ENTRY_MOD5 = 7,
EGG_MODMAP_ENTRY_LAST = 8
};
#define MODMAP_ENTRY_TO_MODIFIER(x) (1 << (x))
typedef struct
{
EggVirtualModifierType mapping[EGG_MODMAP_ENTRY_LAST];
} EggModmap;
static const EggModmap* egg_keymap_get_modmap (GdkKeymap *keymap);
static inline gboolean
is_alt (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 'a' || string[1] == 'A') &&
(string[2] == 'l' || string[2] == 'L') &&
(string[3] == 't' || string[3] == 'T') &&
(string[4] == '>'));
}
static inline gboolean
is_ctl (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 'c' || string[1] == 'C') &&
(string[2] == 't' || string[2] == 'T') &&
(string[3] == 'l' || string[3] == 'L') &&
(string[4] == '>'));
}
static inline gboolean
is_modx (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 'm' || string[1] == 'M') &&
(string[2] == 'o' || string[2] == 'O') &&
(string[3] == 'd' || string[3] == 'D') &&
(string[4] >= '1' && string[4] <= '5') &&
(string[5] == '>'));
}
static inline gboolean
is_ctrl (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 'c' || string[1] == 'C') &&
(string[2] == 't' || string[2] == 'T') &&
(string[3] == 'r' || string[3] == 'R') &&
(string[4] == 'l' || string[4] == 'L') &&
(string[5] == '>'));
}
static inline gboolean
is_shft (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 's' || string[1] == 'S') &&
(string[2] == 'h' || string[2] == 'H') &&
(string[3] == 'f' || string[3] == 'F') &&
(string[4] == 't' || string[4] == 'T') &&
(string[5] == '>'));
}
static inline gboolean
is_shift (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 's' || string[1] == 'S') &&
(string[2] == 'h' || string[2] == 'H') &&
(string[3] == 'i' || string[3] == 'I') &&
(string[4] == 'f' || string[4] == 'F') &&
(string[5] == 't' || string[5] == 'T') &&
(string[6] == '>'));
}
static inline gboolean
is_control (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 'c' || string[1] == 'C') &&
(string[2] == 'o' || string[2] == 'O') &&
(string[3] == 'n' || string[3] == 'N') &&
(string[4] == 't' || string[4] == 'T') &&
(string[5] == 'r' || string[5] == 'R') &&
(string[6] == 'o' || string[6] == 'O') &&
(string[7] == 'l' || string[7] == 'L') &&
(string[8] == '>'));
}
static inline gboolean
is_release (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 'r' || string[1] == 'R') &&
(string[2] == 'e' || string[2] == 'E') &&
(string[3] == 'l' || string[3] == 'L') &&
(string[4] == 'e' || string[4] == 'E') &&
(string[5] == 'a' || string[5] == 'A') &&
(string[6] == 's' || string[6] == 'S') &&
(string[7] == 'e' || string[7] == 'E') &&
(string[8] == '>'));
}
static inline gboolean
is_meta (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 'm' || string[1] == 'M') &&
(string[2] == 'e' || string[2] == 'E') &&
(string[3] == 't' || string[3] == 'T') &&
(string[4] == 'a' || string[4] == 'A') &&
(string[5] == '>'));
}
static inline gboolean
is_super (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 's' || string[1] == 'S') &&
(string[2] == 'u' || string[2] == 'U') &&
(string[3] == 'p' || string[3] == 'P') &&
(string[4] == 'e' || string[4] == 'E') &&
(string[5] == 'r' || string[5] == 'R') &&
(string[6] == '>'));
}
static inline gboolean
is_hyper (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 'h' || string[1] == 'H') &&
(string[2] == 'y' || string[2] == 'Y') &&
(string[3] == 'p' || string[3] == 'P') &&
(string[4] == 'e' || string[4] == 'E') &&
(string[5] == 'r' || string[5] == 'R') &&
(string[6] == '>'));
}
/**
* egg_accelerator_parse_virtual:
* @accelerator: string representing an accelerator
* @accelerator_key: return location for accelerator keyval
* @accelerator_mods: return location for accelerator modifier mask
*
* Parses a string representing a virtual accelerator. The format
* looks like "&lt;Control&gt;a" or "&lt;Shift&gt;&lt;Alt&gt;F1" or
* "&lt;Release&gt;z" (the last one is for key release). The parser
* is fairly liberal and allows lower or upper case, and also
* abbreviations such as "&lt;Ctl&gt;" and "&lt;Ctrl&gt;".
*
* If the parse fails, @accelerator_key and @accelerator_mods will
* be set to 0 (zero) and %FALSE will be returned. If the string contains
* only modifiers, @accelerator_key will be set to 0 but %TRUE will be
* returned.
*
* The virtual vs. concrete accelerator distinction is a relic of
* how the X Window System works; there are modifiers Mod2-Mod5 that
* can represent various keyboard keys (numlock, meta, hyper, etc.),
* the virtual modifier represents the keyboard key, the concrete
* modifier the actual Mod2-Mod5 bits in the key press event.
*
* Returns: %TRUE on success.
*/
gboolean
egg_accelerator_parse_virtual (const gchar *accelerator,
guint *accelerator_key,
EggVirtualModifierType *accelerator_mods)
{
guint keyval;
GdkModifierType mods;
gint len;
gboolean bad_keyval;
if (accelerator_key)
*accelerator_key = 0;
if (accelerator_mods)
*accelerator_mods = 0;
g_return_val_if_fail (accelerator != NULL, FALSE);
bad_keyval = FALSE;
keyval = 0;
mods = 0;
len = strlen (accelerator);
while (len)
{
if (*accelerator == '<')
{
if (len >= 9 && is_release (accelerator))
{
accelerator += 9;
len -= 9;
mods |= EGG_VIRTUAL_RELEASE_MASK;
}
else if (len >= 9 && is_control (accelerator))
{
accelerator += 9;
len -= 9;
mods |= EGG_VIRTUAL_CONTROL_MASK;
}
else if (len >= 7 && is_shift (accelerator))
{
accelerator += 7;
len -= 7;
mods |= EGG_VIRTUAL_SHIFT_MASK;
}
else if (len >= 6 && is_shft (accelerator))
{
accelerator += 6;
len -= 6;
mods |= EGG_VIRTUAL_SHIFT_MASK;
}
else if (len >= 6 && is_ctrl (accelerator))
{
accelerator += 6;
len -= 6;
mods |= EGG_VIRTUAL_CONTROL_MASK;
}
else if (len >= 6 && is_modx (accelerator))
{
static const guint mod_vals[] = {
EGG_VIRTUAL_ALT_MASK, EGG_VIRTUAL_MOD2_MASK, EGG_VIRTUAL_MOD3_MASK,
EGG_VIRTUAL_MOD4_MASK, EGG_VIRTUAL_MOD5_MASK
};
len -= 6;
accelerator += 4;
mods |= mod_vals[*accelerator - '1'];
accelerator += 2;
}
else if (len >= 5 && is_ctl (accelerator))
{
accelerator += 5;
len -= 5;
mods |= EGG_VIRTUAL_CONTROL_MASK;
}
else if (len >= 5 && is_alt (accelerator))
{
accelerator += 5;
len -= 5;
mods |= EGG_VIRTUAL_ALT_MASK;
}
else if (len >= 6 && is_meta (accelerator))
{
accelerator += 6;
len -= 6;
mods |= EGG_VIRTUAL_META_MASK;
}
else if (len >= 7 && is_hyper (accelerator))
{
accelerator += 7;
len -= 7;
mods |= EGG_VIRTUAL_HYPER_MASK;
}
else if (len >= 7 && is_super (accelerator))
{
accelerator += 7;
len -= 7;
mods |= EGG_VIRTUAL_SUPER_MASK;
}
else
{
gchar last_ch;
last_ch = *accelerator;
while (last_ch && last_ch != '>')
{
last_ch = *accelerator;
accelerator += 1;
len -= 1;
}
}
}
else
{
keyval = gdk_keyval_from_name (accelerator);
if (keyval == 0)
bad_keyval = TRUE;
accelerator += len;
len -= len;
}
}
if (accelerator_key)
*accelerator_key = gdk_keyval_to_lower (keyval);
if (accelerator_mods)
*accelerator_mods = mods;
return !bad_keyval;
}
/**
* egg_virtual_accelerator_name:
* @accelerator_key: accelerator keyval
* @accelerator_mods: accelerator modifier mask
* @returns: a newly-allocated accelerator name
*
* Converts an accelerator keyval and modifier mask
* into a string parseable by egg_accelerator_parse_virtual().
* For example, if you pass in #GDK_q and #EGG_VIRTUAL_CONTROL_MASK,
* this function returns "&lt;Control&gt;q".
*
* The caller of this function must free the returned string.
*/
gchar*
egg_virtual_accelerator_name (guint accelerator_key,
EggVirtualModifierType accelerator_mods)
{
static const gchar text_release[] = "<Release>";
static const gchar text_shift[] = "<Shift>";
static const gchar text_control[] = "<Control>";
static const gchar text_mod1[] = "<Alt>";
static const gchar text_mod2[] = "<Mod2>";
static const gchar text_mod3[] = "<Mod3>";
static const gchar text_mod4[] = "<Mod4>";
static const gchar text_mod5[] = "<Mod5>";
static const gchar text_meta[] = "<Meta>";
static const gchar text_super[] = "<Super>";
static const gchar text_hyper[] = "<Hyper>";
guint l;
gchar *keyval_name;
gchar *accelerator;
accelerator_mods &= EGG_VIRTUAL_MODIFIER_MASK;
keyval_name = gdk_keyval_name (gdk_keyval_to_lower (accelerator_key));
if (!keyval_name)
keyval_name = "";
l = 0;
if (accelerator_mods & EGG_VIRTUAL_RELEASE_MASK)
l += sizeof (text_release) - 1;
if (accelerator_mods & EGG_VIRTUAL_SHIFT_MASK)
l += sizeof (text_shift) - 1;
if (accelerator_mods & EGG_VIRTUAL_CONTROL_MASK)
l += sizeof (text_control) - 1;
if (accelerator_mods & EGG_VIRTUAL_ALT_MASK)
l += sizeof (text_mod1) - 1;
if (accelerator_mods & EGG_VIRTUAL_MOD2_MASK)
l += sizeof (text_mod2) - 1;
if (accelerator_mods & EGG_VIRTUAL_MOD3_MASK)
l += sizeof (text_mod3) - 1;
if (accelerator_mods & EGG_VIRTUAL_MOD4_MASK)
l += sizeof (text_mod4) - 1;
if (accelerator_mods & EGG_VIRTUAL_MOD5_MASK)
l += sizeof (text_mod5) - 1;
if (accelerator_mods & EGG_VIRTUAL_META_MASK)
l += sizeof (text_meta) - 1;
if (accelerator_mods & EGG_VIRTUAL_HYPER_MASK)
l += sizeof (text_hyper) - 1;
if (accelerator_mods & EGG_VIRTUAL_SUPER_MASK)
l += sizeof (text_super) - 1;
l += strlen (keyval_name);
accelerator = g_new (gchar, l + 1);
l = 0;
accelerator[l] = 0;
if (accelerator_mods & EGG_VIRTUAL_RELEASE_MASK)
{
strcpy (accelerator + l, text_release);
l += sizeof (text_release) - 1;
}
if (accelerator_mods & EGG_VIRTUAL_SHIFT_MASK)
{
strcpy (accelerator + l, text_shift);
l += sizeof (text_shift) - 1;
}
if (accelerator_mods & EGG_VIRTUAL_CONTROL_MASK)
{
strcpy (accelerator + l, text_control);
l += sizeof (text_control) - 1;
}
if (accelerator_mods & EGG_VIRTUAL_ALT_MASK)
{
strcpy (accelerator + l, text_mod1);
l += sizeof (text_mod1) - 1;
}
if (accelerator_mods & EGG_VIRTUAL_MOD2_MASK)
{
strcpy (accelerator + l, text_mod2);
l += sizeof (text_mod2) - 1;
}
if (accelerator_mods & EGG_VIRTUAL_MOD3_MASK)
{
strcpy (accelerator + l, text_mod3);
l += sizeof (text_mod3) - 1;
}
if (accelerator_mods & EGG_VIRTUAL_MOD4_MASK)
{
strcpy (accelerator + l, text_mod4);
l += sizeof (text_mod4) - 1;
}
if (accelerator_mods & EGG_VIRTUAL_MOD5_MASK)
{
strcpy (accelerator + l, text_mod5);
l += sizeof (text_mod5) - 1;
}
if (accelerator_mods & EGG_VIRTUAL_META_MASK)
{
strcpy (accelerator + l, text_meta);
l += sizeof (text_meta) - 1;
}
if (accelerator_mods & EGG_VIRTUAL_HYPER_MASK)
{
strcpy (accelerator + l, text_hyper);
l += sizeof (text_hyper) - 1;
}
if (accelerator_mods & EGG_VIRTUAL_SUPER_MASK)
{
strcpy (accelerator + l, text_super);
l += sizeof (text_super) - 1;
}
strcpy (accelerator + l, keyval_name);
return accelerator;
}
void
egg_keymap_resolve_virtual_modifiers (GdkKeymap *keymap,
EggVirtualModifierType virtual_mods,
GdkModifierType *concrete_mods)
{
GdkModifierType concrete;
int i;
const EggModmap *modmap;
g_return_if_fail (GDK_IS_KEYMAP (keymap));
g_return_if_fail (concrete_mods != NULL);
modmap = egg_keymap_get_modmap (keymap);
/* Not so sure about this algorithm. */
concrete = 0;
i = 0;
while (i < EGG_MODMAP_ENTRY_LAST)
{
if (modmap->mapping[i] & virtual_mods)
concrete |= (1 << i);
++i;
}
*concrete_mods = concrete;
}
void
egg_keymap_virtualize_modifiers (GdkKeymap *keymap,
GdkModifierType concrete_mods,
EggVirtualModifierType *virtual_mods)
{
GdkModifierType virtual;
int i;
const EggModmap *modmap;
g_return_if_fail (GDK_IS_KEYMAP (keymap));
g_return_if_fail (virtual_mods != NULL);
modmap = egg_keymap_get_modmap (keymap);
/* Not so sure about this algorithm. */
virtual = 0;
i = 0;
while (i < EGG_MODMAP_ENTRY_LAST)
{
if ((1 << i) & concrete_mods)
{
EggVirtualModifierType cleaned;
cleaned = modmap->mapping[i] & ~(EGG_VIRTUAL_MOD2_MASK |
EGG_VIRTUAL_MOD3_MASK |
EGG_VIRTUAL_MOD4_MASK |
EGG_VIRTUAL_MOD5_MASK);
if (cleaned != 0)
{
virtual |= cleaned;
}
else
{
/* Rather than dropping mod2->mod5 if not bound,
* go ahead and use the concrete names
*/
virtual |= modmap->mapping[i];
}
}
++i;
}
*virtual_mods = virtual;
}
static void
reload_modmap (GdkKeymap *keymap,
EggModmap *modmap)
{
XModifierKeymap *xmodmap;
int map_size;
int i;
/* FIXME multihead */
xmodmap = XGetModifierMapping (gdk_x11_get_default_xdisplay ());
memset (modmap->mapping, 0, sizeof (modmap->mapping));
/* there are 8 modifiers, and the first 3 are shift, shift lock,
* and control
*/
map_size = 8 * xmodmap->max_keypermod;
i = 3 * xmodmap->max_keypermod;
while (i < map_size)
{
/* get the key code at this point in the map,
* see if its keysym is one we're interested in
*/
int keycode = xmodmap->modifiermap[i];
GdkKeymapKey *keys;
guint *keyvals;
int n_entries;
int j;
EggVirtualModifierType mask;
keys = NULL;
keyvals = NULL;
n_entries = 0;
gdk_keymap_get_entries_for_keycode (keymap,
keycode,
&keys, &keyvals, &n_entries);
mask = 0;
j = 0;
while (j < n_entries)
{
if (keyvals[j] == GDK_Num_Lock)
mask |= EGG_VIRTUAL_NUM_LOCK_MASK;
else if (keyvals[j] == GDK_Scroll_Lock)
mask |= EGG_VIRTUAL_SCROLL_LOCK_MASK;
else if (keyvals[j] == GDK_Meta_L ||
keyvals[j] == GDK_Meta_R)
mask |= EGG_VIRTUAL_META_MASK;
else if (keyvals[j] == GDK_Hyper_L ||
keyvals[j] == GDK_Hyper_R)
mask |= EGG_VIRTUAL_HYPER_MASK;
else if (keyvals[j] == GDK_Super_L ||
keyvals[j] == GDK_Super_R)
mask |= EGG_VIRTUAL_SUPER_MASK;
else if (keyvals[j] == GDK_Mode_switch)
mask |= EGG_VIRTUAL_MODE_SWITCH_MASK;
++j;
}
/* Mod1Mask is 1 << 3 for example, i.e. the
* fourth modifier, i / keyspermod is the modifier
* index
*/
modmap->mapping[i/xmodmap->max_keypermod] |= mask;
g_free (keyvals);
g_free (keys);
++i;
}
/* Add in the not-really-virtual fixed entries */
modmap->mapping[EGG_MODMAP_ENTRY_SHIFT] |= EGG_VIRTUAL_SHIFT_MASK;
modmap->mapping[EGG_MODMAP_ENTRY_CONTROL] |= EGG_VIRTUAL_CONTROL_MASK;
modmap->mapping[EGG_MODMAP_ENTRY_LOCK] |= EGG_VIRTUAL_LOCK_MASK;
modmap->mapping[EGG_MODMAP_ENTRY_MOD1] |= EGG_VIRTUAL_ALT_MASK;
modmap->mapping[EGG_MODMAP_ENTRY_MOD2] |= EGG_VIRTUAL_MOD2_MASK;
modmap->mapping[EGG_MODMAP_ENTRY_MOD3] |= EGG_VIRTUAL_MOD3_MASK;
modmap->mapping[EGG_MODMAP_ENTRY_MOD4] |= EGG_VIRTUAL_MOD4_MASK;
modmap->mapping[EGG_MODMAP_ENTRY_MOD5] |= EGG_VIRTUAL_MOD5_MASK;
XFreeModifiermap (xmodmap);
}
const EggModmap*
egg_keymap_get_modmap (GdkKeymap *keymap)
{
EggModmap *modmap;
/* This is all a hack, much simpler when we can just
* modify GDK directly.
*/
modmap = g_object_get_data (G_OBJECT (keymap),
"egg-modmap");
if (modmap == NULL)
{
modmap = g_new0 (EggModmap, 1);
/* FIXME modify keymap change events with an event filter
* and force a reload if we get one
*/
reload_modmap (keymap, modmap);
g_object_set_data_full (G_OBJECT (keymap),
"egg-modmap",
modmap,
g_free);
}
g_assert (modmap != NULL);
return modmap;
}
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