553 lines
14 KiB
C
553 lines
14 KiB
C
/*
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* mooaccel.c
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*
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* Copyright (C) 2004-2007 by Yevgen Muntyan <muntyan@math.tamu.edu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* See COPYING file that comes with this distribution.
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*/
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#include "mooutils/mooaccel.h"
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#include "mooutils/mooprefs.h"
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#include <gdk/gdkkeysyms.h>
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#include <gtk/gtk.h>
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#include <string.h>
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#define MOO_ACCEL_PREFS_KEY "Shortcuts"
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static void accel_map_changed (GtkAccelMap *map,
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gchar *accel_path,
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guint accel_key,
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GdkModifierType accel_mods);
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static const char *get_accel (const char *accel_path);
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static void prefs_new_accel (const char *accel_path,
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const char *default_accel);
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static const char *prefs_get_accel (const char *accel_path);
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static void prefs_set_accel (const char *accel_path,
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const char *accel);
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static gboolean parse_accel (const char *accel,
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guint *key,
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GdkModifierType *mods);
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static char *_moo_accel_normalize (const char *accel);
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static GHashTable *moo_accel_map = NULL; /* char* -> char* */
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static GHashTable *moo_default_accel_map = NULL; /* char* -> char* */
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static void
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init_accel_map (void)
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{
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if (!moo_accel_map)
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{
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moo_accel_map =
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g_hash_table_new_full (g_str_hash, g_str_equal,
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(GDestroyNotify) g_free,
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(GDestroyNotify) g_free);
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moo_default_accel_map =
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g_hash_table_new_full (g_str_hash, g_str_equal,
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(GDestroyNotify) g_free,
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(GDestroyNotify) g_free);
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g_signal_connect (gtk_accel_map_get (), "changed",
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G_CALLBACK (accel_map_changed),
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NULL);
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}
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}
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static void
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accel_map_changed (G_GNUC_UNUSED GtkAccelMap *map,
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gchar *accel_path,
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guint accel_key,
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GdkModifierType accel_mods)
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{
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char *new_accel;
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if (accel_key && accel_mods)
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new_accel = gtk_accelerator_name (accel_key, accel_mods);
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else
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new_accel = NULL;
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_moo_modify_accel (accel_path, new_accel);
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g_free (new_accel);
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}
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static char *
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accel_path_to_prefs_key (const char *accel_path)
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{
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if (accel_path && accel_path[0] == '<')
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{
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accel_path = strchr (accel_path, '/');
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if (accel_path)
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accel_path++;
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}
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if (!accel_path || !accel_path[0])
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return NULL;
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return g_strdup_printf (MOO_ACCEL_PREFS_KEY "/%s", accel_path);
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}
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static void
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prefs_set_accel (const char *accel_path,
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const char *accel)
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{
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char *key;
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g_return_if_fail (accel != NULL);
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key = accel_path_to_prefs_key (accel_path);
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g_return_if_fail (key != NULL);
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g_return_if_fail (moo_prefs_key_registered (key));
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moo_prefs_set_string (key, accel);
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g_free (key);
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}
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static void
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prefs_new_accel (const char *accel_path,
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const char *default_accel)
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{
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char *key;
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g_return_if_fail (accel_path != NULL && default_accel != NULL);
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key = accel_path_to_prefs_key (accel_path);
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g_return_if_fail (key != NULL);
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if (!moo_prefs_key_registered (key))
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moo_prefs_new_key_string(key, default_accel);
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g_free (key);
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}
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static const char *
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prefs_get_accel (const char *accel_path)
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{
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const char *accel;
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char *key;
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key = accel_path_to_prefs_key (accel_path);
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g_return_val_if_fail (key != NULL, NULL);
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accel = moo_prefs_get_string (key);
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g_free (key);
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return accel;
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}
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static void
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set_accel (const char *accel_path,
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const char *accel)
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{
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guint accel_key = 0;
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GdkModifierType accel_mods = 0;
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const char *old_accel;
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g_return_if_fail (accel_path != NULL && accel != NULL);
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init_accel_map ();
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old_accel = get_accel (accel_path);
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if (old_accel && !strcmp (old_accel, accel))
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return;
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if (*accel)
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{
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gtk_accelerator_parse (accel, &accel_key, &accel_mods);
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if (accel_key || accel_mods)
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{
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g_hash_table_insert (moo_accel_map,
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g_strdup (accel_path),
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gtk_accelerator_name (accel_key, accel_mods));
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}
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else
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{
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g_warning ("could not parse accelerator '%s'", accel);
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g_hash_table_insert (moo_accel_map,
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g_strdup (accel_path),
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g_strdup (""));
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}
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}
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else
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{
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g_hash_table_insert (moo_accel_map,
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g_strdup (accel_path),
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g_strdup (""));
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}
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g_signal_handlers_block_by_func (gtk_accel_map_get (),
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(gpointer) accel_map_changed,
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NULL);
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if (!gtk_accel_map_change_entry (accel_path, accel_key, accel_mods, TRUE))
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g_warning ("could not set accel '%s' for accel_path '%s'",
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accel, accel_path);
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g_signal_handlers_unblock_by_func (gtk_accel_map_get (),
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(gpointer) accel_map_changed,
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NULL);
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}
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static const char *
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get_accel (const char *accel_path)
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{
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g_return_val_if_fail (accel_path != NULL, NULL);
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init_accel_map ();
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return g_hash_table_lookup (moo_accel_map, accel_path);
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}
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static const char *
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get_default_accel (const char *accel_path)
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{
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g_return_val_if_fail (accel_path != NULL, NULL);
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init_accel_map ();
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return g_hash_table_lookup (moo_default_accel_map, accel_path);
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}
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const char *
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_moo_get_accel (const char *accel_path)
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{
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const char *accel = get_accel (accel_path);
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g_return_val_if_fail (accel != NULL, "");
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return accel;
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}
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const char *
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_moo_get_default_accel (const char *accel_path)
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{
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const char *accel = get_default_accel (accel_path);
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g_return_val_if_fail (accel != NULL, "");
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return accel;
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}
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void
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_moo_accel_register (const char *accel_path,
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const char *default_accel)
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{
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char *freeme = NULL;
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g_return_if_fail (accel_path != NULL && default_accel != NULL);
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init_accel_map ();
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if (get_default_accel (accel_path))
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return;
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if (default_accel[0])
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{
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freeme = _moo_accel_normalize (default_accel);
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g_return_if_fail (freeme != NULL);
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default_accel = freeme;
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}
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if (default_accel[0])
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{
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guint accel_key = 0;
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GdkModifierType accel_mods = 0;
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gtk_accelerator_parse (default_accel, &accel_key, &accel_mods);
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if (accel_key || accel_mods)
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{
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g_hash_table_insert (moo_default_accel_map,
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g_strdup (accel_path),
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gtk_accelerator_name (accel_key, accel_mods));
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}
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else
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{
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g_warning ("could not parse accelerator '%s'", default_accel);
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}
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}
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else
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{
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g_hash_table_insert (moo_default_accel_map,
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g_strdup (accel_path),
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g_strdup (""));
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}
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prefs_new_accel (accel_path, default_accel);
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set_accel (accel_path, prefs_get_accel (accel_path));
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g_free (freeme);
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}
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void
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_moo_modify_accel (const char *accel_path,
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const char *new_accel)
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{
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char *freeme = NULL;
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g_return_if_fail (accel_path != NULL);
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g_return_if_fail (get_accel (accel_path) != NULL);
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if (!new_accel)
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new_accel = "";
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if (new_accel[0])
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{
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freeme = _moo_accel_normalize (new_accel);
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new_accel = freeme;
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g_return_if_fail (new_accel != NULL);
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}
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set_accel (accel_path, new_accel);
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prefs_set_accel (accel_path, new_accel);
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g_free (freeme);
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}
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char *
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_moo_get_accel_label (const char *accel)
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{
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guint key;
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GdkModifierType mods;
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g_return_val_if_fail (accel != NULL, g_strdup (""));
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init_accel_map ();
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if (*accel)
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{
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gtk_accelerator_parse (accel, &key, &mods);
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return gtk_accelerator_get_label (key, mods);
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}
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else
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{
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return g_strdup ("");
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}
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}
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/*****************************************************************************/
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/* Parsing accelerator strings
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*/
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/* TODO: multibyte symbols? */
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static guint
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keyval_from_symbol (char sym)
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{
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switch (sym)
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{
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case ' ': return GDK_space;
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case '!': return GDK_exclam;
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case '"': return GDK_quotedbl;
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case '#': return GDK_numbersign;
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case '$': return GDK_dollar;
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case '%': return GDK_percent;
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case '&': return GDK_ampersand;
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case '\'': return GDK_apostrophe;
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#if 0
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case '\'': return GDK_quoteright;
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#define GDK_asciicircum 0x05e
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#define GDK_grave 0x060
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#endif
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case '(': return GDK_parenleft;
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case ')': return GDK_parenright;
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case '*': return GDK_asterisk;
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case '+': return GDK_plus;
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case ',': return GDK_comma;
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case '-': return GDK_minus;
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case '.': return GDK_period;
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case '/': return GDK_slash;
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case ':': return GDK_colon;
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case ';': return GDK_semicolon;
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case '<': return GDK_less;
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case '=': return GDK_equal;
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case '>': return GDK_greater;
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case '?': return GDK_question;
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case '@': return GDK_at;
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case '[': return GDK_bracketleft;
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case '\\': return GDK_backslash;
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case ']': return GDK_bracketright;
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case '_': return GDK_underscore;
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case '`': return GDK_quoteleft;
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case '{': return GDK_braceleft;
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case '|': return GDK_bar;
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case '}': return GDK_braceright;
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case '~': return GDK_asciitilde;
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}
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return 0;
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}
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static guint
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parse_key (const char *string)
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{
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char *stripped = g_strstrip (g_strdup (string));
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guint key = gdk_keyval_from_name (stripped);
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if (!key)
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key = keyval_from_symbol (stripped[0]);
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g_free (stripped);
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return key;
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}
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static GdkModifierType
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parse_mod (const char *string)
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{
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GdkModifierType mod = 0;
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char *stripped;
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stripped = g_strstrip (g_ascii_strdown (string, -1));
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if (!strcmp (stripped, "alt"))
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mod = GDK_MOD1_MASK;
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else if (!strcmp (stripped, "ctl") ||
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!strcmp (stripped, "ctrl") ||
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!strcmp (stripped, "control"))
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mod = GDK_CONTROL_MASK;
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else if (!strncmp (stripped, "mod", 3) &&
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1 <= stripped[3] && stripped[3] <= 5 && !stripped[4])
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{
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switch (stripped[3])
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{
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case '1': mod = GDK_MOD1_MASK; break;
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case '2': mod = GDK_MOD2_MASK; break;
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case '3': mod = GDK_MOD3_MASK; break;
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case '4': mod = GDK_MOD4_MASK; break;
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case '5': mod = GDK_MOD5_MASK; break;
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}
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}
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else if (!strcmp (stripped, "shift") ||
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!strcmp (stripped, "shft"))
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mod = GDK_SHIFT_MASK;
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else if (!strcmp (stripped, "release"))
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mod = GDK_RELEASE_MASK;
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g_free (stripped);
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return mod;
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}
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static gboolean
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accel_parse_sep (const char *accel,
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const char *sep,
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guint *keyval,
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GdkModifierType *modifiers)
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{
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char **pieces;
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guint n_pieces, i;
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GdkModifierType mod = 0;
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guint key = 0;
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pieces = g_strsplit (accel, sep, 0);
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n_pieces = g_strv_length (pieces);
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g_return_val_if_fail (n_pieces > 1, FALSE);
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for (i = 0; i < n_pieces - 1; ++i)
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{
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GdkModifierType m = parse_mod (pieces[i]);
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if (!m)
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goto out;
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mod |= m;
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}
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key = parse_key (pieces[n_pieces-1]);
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out:
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g_strfreev (pieces);
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if (!key)
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mod = 0;
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if (keyval)
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*keyval = key;
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if (modifiers)
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*modifiers = mod;
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return key != 0;
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}
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static gboolean
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parse_accel (const char *accel,
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guint *keyval,
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GdkModifierType *modifiers)
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{
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guint key = 0;
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guint len;
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GdkModifierType mods = 0;
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char *p;
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g_return_val_if_fail (accel && accel[0], FALSE);
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len = strlen (accel);
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if (len == 1)
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{
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key = parse_key (accel);
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goto out;
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}
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if (accel[0] == '<')
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{
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gtk_accelerator_parse (accel, &key, &mods);
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goto out;
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}
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if ((p = strchr (accel, '+')) && p != accel + len - 1)
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return accel_parse_sep (accel, "+", keyval, modifiers);
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else if ((p = strchr (accel, '-')) && p != accel + len - 1)
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return accel_parse_sep (accel, "-", keyval, modifiers);
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key = parse_key (accel);
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out:
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if (keyval)
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*keyval = gdk_keyval_to_lower (key);
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if (modifiers)
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*modifiers = mods;
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return key != 0;
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}
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static char *
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_moo_accel_normalize (const char *accel)
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{
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guint key;
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GdkModifierType mods;
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if (!accel || !accel[0])
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return NULL;
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if (parse_accel (accel, &key, &mods))
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{
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return gtk_accelerator_name (key, mods);
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}
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else
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{
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g_warning ("could not parse accelerator '%s'", accel);
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return NULL;
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}
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}
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