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99c3928cec
We currently calling gdk_display_map_keyval up to once per key event per shortcut trigger, and that function does an expensive loop over the entire keymap and allocates an array. Avoid this by caching the entries in a single array, and have a lookup table for finding the entries for a keyval. To do this, change the GdkKeymap.get_entries_for_keyval signature, and change the ::keys-changed signal to be RUN_FIRST, since we want to clear the cache in the class handler before running signal handlers. These changes are possible now, since keymaps are no longer public API.
127 lines
6.1 KiB
C
127 lines
6.1 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 2010 Red Hat, Inc
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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 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __GDK_KEYS_PRIVATE_H__
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#define __GDK_KEYS_PRIVATE_H__
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#include "gdkkeys.h"
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G_BEGIN_DECLS
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#define GDK_TYPE_KEYMAP (gdk_keymap_get_type ())
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#define GDK_KEYMAP(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_KEYMAP, GdkKeymap))
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#define GDK_IS_KEYMAP(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_KEYMAP))
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#define GDK_KEYMAP_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_KEYMAP, GdkKeymapClass))
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#define GDK_IS_KEYMAP_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_KEYMAP))
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#define GDK_KEYMAP_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_KEYMAP, GdkKeymapClass))
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typedef struct _GdkKeymap GdkKeymap;
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typedef struct _GdkKeymapClass GdkKeymapClass;
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struct _GdkKeymapClass
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{
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GObjectClass parent_class;
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PangoDirection (* get_direction) (GdkKeymap *keymap);
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gboolean (* have_bidi_layouts) (GdkKeymap *keymap);
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gboolean (* get_caps_lock_state) (GdkKeymap *keymap);
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gboolean (* get_num_lock_state) (GdkKeymap *keymap);
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gboolean (* get_scroll_lock_state) (GdkKeymap *keymap);
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gboolean (* get_entries_for_keyval) (GdkKeymap *keymap,
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guint keyval,
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GArray *array);
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gboolean (* get_entries_for_keycode) (GdkKeymap *keymap,
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guint hardware_keycode,
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GdkKeymapKey **keys,
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guint **keyvals,
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gint *n_entries);
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guint (* lookup_key) (GdkKeymap *keymap,
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const GdkKeymapKey *key);
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gboolean (* translate_keyboard_state) (GdkKeymap *keymap,
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guint hardware_keycode,
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GdkModifierType state,
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gint group,
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guint *keyval,
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gint *effective_group,
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gint *level,
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GdkModifierType *consumed_modifiers);
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guint (* get_modifier_state) (GdkKeymap *keymap);
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/* Signals */
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void (*direction_changed) (GdkKeymap *keymap);
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void (*keys_changed) (GdkKeymap *keymap);
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void (*state_changed) (GdkKeymap *keymap);
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};
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struct _GdkKeymap
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{
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GObject parent_instance;
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GdkDisplay *display;
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/* We cache an array of GdkKeymapKey entries for keyval -> keycode
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* lookup. Position 0 is unused.
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*
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* The hash table maps keyvals to values that have the number of keys
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* in the low 8 bits, and the position in the array in the rest.
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*
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* The cache is cleared before ::keys-changed is emitted.
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*/
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GArray *cached_keys;
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GHashTable *cache;
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};
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GType gdk_keymap_get_type (void) G_GNUC_CONST;
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GdkDisplay * gdk_keymap_get_display (GdkKeymap *keymap);
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guint gdk_keymap_lookup_key (GdkKeymap *keymap,
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const GdkKeymapKey *key);
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gboolean gdk_keymap_translate_keyboard_state (GdkKeymap *keymap,
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guint hardware_keycode,
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GdkModifierType state,
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gint group,
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guint *keyval,
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gint *effective_group,
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gint *level,
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GdkModifierType *consumed_modifiers);
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gboolean gdk_keymap_get_entries_for_keyval (GdkKeymap *keymap,
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guint keyval,
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GdkKeymapKey **keys,
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gint *n_keys);
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gboolean gdk_keymap_get_entries_for_keycode (GdkKeymap *keymap,
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guint hardware_keycode,
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GdkKeymapKey **keys,
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guint **keyvals,
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gint *n_entries);
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PangoDirection gdk_keymap_get_direction (GdkKeymap *keymap);
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gboolean gdk_keymap_have_bidi_layouts (GdkKeymap *keymap);
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gboolean gdk_keymap_get_caps_lock_state (GdkKeymap *keymap);
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gboolean gdk_keymap_get_num_lock_state (GdkKeymap *keymap);
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gboolean gdk_keymap_get_scroll_lock_state (GdkKeymap *keymap);
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guint gdk_keymap_get_modifier_state (GdkKeymap *keymap);
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void gdk_keymap_get_cached_entries_for_keyval (GdkKeymap *keymap,
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guint keyval,
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GdkKeymapKey **keys,
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guint *n_keys);
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G_END_DECLS
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#endif
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