forked from AuroraMiddleware/gtk
353 lines
7.8 KiB
C
353 lines
7.8 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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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 Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <ctype.h>
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#include "gtkaccelerator.h"
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#include "gtksignal.h"
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#include "gtkwidget.h"
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typedef struct _GtkAcceleratorEntry GtkAcceleratorEntry;
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struct _GtkAcceleratorEntry
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{
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guint8 modifiers;
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GtkObject *object;
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gint signal_num;
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};
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static void gtk_accelerator_table_init (GtkAcceleratorTable *table);
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static void gtk_accelerator_table_clean (GtkAcceleratorTable *table);
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static GtkAcceleratorTable *default_table = NULL;
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static GSList *tables = NULL;
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static guint8 gtk_accelerator_table_default_mod_mask = ~0;
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GtkAcceleratorTable*
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gtk_accelerator_table_new ()
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{
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GtkAcceleratorTable *table;
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table = g_new (GtkAcceleratorTable, 1);
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gtk_accelerator_table_init (table);
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tables = g_slist_prepend (tables, table);
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return table;
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}
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GtkAcceleratorTable*
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gtk_accelerator_table_find (GtkObject *object,
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const gchar *signal_name,
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guchar accelerator_key,
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guint8 accelerator_mods)
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{
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GtkAcceleratorTable *table;
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GtkAcceleratorEntry *entry;
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GSList *tmp_list;
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GList *entries;
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gint signal_num;
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guint hash;
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g_return_val_if_fail (object != NULL, NULL);
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g_return_val_if_fail (signal_name != NULL, NULL);
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signal_num = gtk_signal_lookup (signal_name, GTK_OBJECT_TYPE (object));
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hash = (guint) accelerator_key;
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tmp_list = tables;
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while (tmp_list)
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{
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table = tmp_list->data;
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tmp_list = tmp_list->next;
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entries = table->entries[hash];
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while (entries)
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{
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entry = entries->data;
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entries = entries->next;
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if ((entry->object == object) &&
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(entry->signal_num == signal_num) &&
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((entry->modifiers & table->modifier_mask) ==
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(accelerator_mods & table->modifier_mask)))
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return table;
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}
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}
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return NULL;
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}
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void
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gtk_accelerator_table_destroy (GtkAcceleratorTable *table)
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{
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g_return_if_fail (table != NULL);
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g_return_if_fail (table->ref_count <= 0);
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tables = g_slist_remove (tables, table);
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gtk_accelerator_table_clean (table);
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g_free (table);
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}
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GtkAcceleratorTable*
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gtk_accelerator_table_ref (GtkAcceleratorTable *table)
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{
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g_return_val_if_fail (table != NULL, NULL);
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table->ref_count += 1;
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return table;
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}
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void
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gtk_accelerator_table_unref (GtkAcceleratorTable *table)
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{
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g_return_if_fail (table != NULL);
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table->ref_count -= 1;
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if (table->ref_count <= 0)
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gtk_accelerator_table_destroy (table);
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}
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void
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gtk_accelerator_table_install (GtkAcceleratorTable *table,
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GtkObject *object,
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const gchar *signal_name,
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guchar accelerator_key,
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guint8 accelerator_mods)
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{
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GtkAcceleratorEntry *entry;
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GList *entries;
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gchar *signame;
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gint signal_num;
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guint hash;
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g_return_if_fail (object != NULL);
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if (!table)
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{
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if (!default_table)
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default_table = gtk_accelerator_table_new ();
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table = default_table;
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}
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signal_num = gtk_signal_lookup (signal_name, GTK_OBJECT_TYPE (object));
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g_return_if_fail (signal_num != 0);
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hash = (guint) accelerator_key;
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entries = table->entries[hash];
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while (entries)
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{
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entry = entries->data;
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if ((entry->modifiers & table->modifier_mask) ==
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(accelerator_mods & table->modifier_mask))
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{
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if (GTK_IS_WIDGET (entry->object))
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{
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signame = gtk_signal_name (entry->signal_num);
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gtk_signal_emit_by_name (entry->object,
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"remove_accelerator",
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signame);
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}
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entry->modifiers = accelerator_mods;
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entry->object = object;
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entry->signal_num = signal_num;
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return;
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}
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entries = entries->next;
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}
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entry = g_new (GtkAcceleratorEntry, 1);
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entry->modifiers = accelerator_mods;
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entry->object = object;
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entry->signal_num = signal_num;
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table->entries[hash] = g_list_prepend (table->entries[hash], entry);
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}
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void
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gtk_accelerator_table_remove (GtkAcceleratorTable *table,
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GtkObject *object,
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const gchar *signal_name)
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{
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GtkAcceleratorEntry *entry;
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GList *entries;
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GList *temp_list;
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gint signal_num;
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gint i;
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g_return_if_fail (object != NULL);
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if (!table)
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{
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if (!default_table)
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default_table = gtk_accelerator_table_new ();
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table = default_table;
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}
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signal_num = gtk_signal_lookup (signal_name, GTK_OBJECT_TYPE (object));
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g_return_if_fail (signal_num != 0);
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for (i = 0; i < 256; i++)
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{
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entries = table->entries[i];
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while (entries)
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{
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entry = entries->data;
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if ((entry->object == object) && (entry->signal_num == signal_num))
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{
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g_free (entry);
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temp_list = entries;
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if (entries->next)
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entries->next->prev = entries->prev;
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if (entries->prev)
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entries->prev->next = entries->next;
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if (table->entries[i] == entries)
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table->entries[i] = entries->next;
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temp_list->next = NULL;
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temp_list->prev = NULL;
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g_list_free (temp_list);
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return;
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}
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entries = entries->next;
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}
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}
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}
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gint
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gtk_accelerator_table_check (GtkAcceleratorTable *table,
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const guchar accelerator_key,
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guint8 accelerator_mods)
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{
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GtkAcceleratorEntry *entry;
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GList *entries;
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guint hash;
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if (!table)
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{
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if (!default_table)
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default_table = gtk_accelerator_table_new ();
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table = default_table;
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}
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hash = (guint) accelerator_key;
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entries = table->entries[hash];
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while (entries)
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{
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entry = entries->data;
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if ((entry->modifiers & table->modifier_mask) ==
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(accelerator_mods & table->modifier_mask))
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{
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gtk_signal_emit (entry->object, entry->signal_num);
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return TRUE;
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}
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entries = entries->next;
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}
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if (!isupper (hash))
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{
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hash = toupper (hash);
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entries = table->entries[hash];
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while (entries)
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{
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entry = entries->data;
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if (((entry->modifiers & table->modifier_mask) ==
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(accelerator_mods & table->modifier_mask)) &&
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(GTK_IS_WIDGET (entry->object) &&
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GTK_WIDGET_SENSITIVE (entry->object)))
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{
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gtk_signal_emit (entry->object, entry->signal_num);
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return TRUE;
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}
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entries = entries->next;
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}
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}
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return FALSE;
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}
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void
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gtk_accelerator_table_set_mod_mask (GtkAcceleratorTable *table,
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guint8 modifier_mask)
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{
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if (table == NULL)
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{
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gtk_accelerator_table_default_mod_mask = modifier_mask;
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}
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else
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{
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table->modifier_mask = modifier_mask;
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}
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}
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static void
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gtk_accelerator_table_init (GtkAcceleratorTable *table)
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{
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gint i;
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g_return_if_fail (table != NULL);
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for (i = 0; i < 256; i++)
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table->entries[i] = NULL;
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table->ref_count = 0;
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table->modifier_mask = gtk_accelerator_table_default_mod_mask;
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}
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static void
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gtk_accelerator_table_clean (GtkAcceleratorTable *table)
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{
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GtkAcceleratorEntry *entry;
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GList *entries;
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gint i;
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g_return_if_fail (table != NULL);
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for (i = 0; i < 256; i++)
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{
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entries = table->entries[i];
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while (entries)
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{
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entry = entries->data;
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entries = entries->next;
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g_free (entry);
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}
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g_list_free (table->entries[i]);
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table->entries[i] = NULL;
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}
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}
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