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gtk/gdk/mir/gdkmirkeymap.c
Robert Ancell 0f26b26f1d Gdk: add an experimental backend for mir 
This is disabled by default.  Enable with --enable-mir-backend.

This backend is a combined work of Robert Ancell and Ryan Lortie.
2014-10-22 11:17:15 -05:00

467 lines
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/*
* Copyright © 2014 Canonical Ltd
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <xkbcommon/xkbcommon.h>
#include "gdkkeysprivate.h"
typedef struct GdkMirKeymap GdkMirKeymap;
typedef struct GdkMirKeymapClass GdkMirKeymapClass;
#define GDK_TYPE_MIR_KEYMAP (gdk_mir_keymap_get_type ())
#define GDK_MIR_KEYMAP(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_MIR_KEYMAP, GdkMirKeymap))
#define GDK_MIR_KEYMAP_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_MIR_KEYMAP, GdkMirKeymapClass))
#define GDK_IS_MIR_KEYMAP(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_MIR_KEYMAP))
#define GDK_IS_MIR_KEYMAP_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_MIR_KEYMAP))
#define GDK_MIR_KEYMAP_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_MIR_KEYMAP, GdkMirKeymapClass))
struct GdkMirKeymap
{
GdkKeymap parent_instance;
struct xkb_keymap *xkb_keymap;
struct xkb_state *xkb_state;
PangoDirection *direction;
gboolean bidi;
};
struct GdkMirKeymapClass
{
GdkKeymapClass parent_class;
};
G_DEFINE_TYPE (GdkMirKeymap, gdk_mir_keymap, GDK_TYPE_KEYMAP)
GdkKeymap *
_gdk_mir_keymap_new (void)
{
return g_object_new (GDK_TYPE_MIR_KEYMAP, NULL);
}
static PangoDirection
gdk_mir_keymap_get_direction (GdkKeymap *keymap)
{
//g_printerr ("gdk_mir_keymap_get_direction\n");
GdkMirKeymap *mir_keymap = GDK_MIR_KEYMAP (keymap);
gint i;
for (i = 0; i < xkb_keymap_num_layouts (mir_keymap->xkb_keymap); i++)
{
if (xkb_state_layout_index_is_active (mir_keymap->xkb_state, i, XKB_STATE_LAYOUT_EFFECTIVE))
return mir_keymap->direction[i];
}
return PANGO_DIRECTION_NEUTRAL;
}
static gboolean
gdk_mir_keymap_have_bidi_layouts (GdkKeymap *keymap)
{
//g_printerr ("gdk_mir_keymap_have_bidi_layouts\n");
return FALSE;
}
static gboolean
gdk_mir_keymap_get_caps_lock_state (GdkKeymap *keymap)
{
//g_printerr ("gdk_mir_keymap_get_caps_lock_state\n");
return xkb_state_led_name_is_active (GDK_MIR_KEYMAP (keymap)->xkb_state, XKB_LED_NAME_CAPS);
}
static gboolean
gdk_mir_keymap_get_num_lock_state (GdkKeymap *keymap)
{
//g_printerr ("gdk_mir_keymap_get_num_lock_state\n");
return xkb_state_led_name_is_active (GDK_MIR_KEYMAP (keymap)->xkb_state, XKB_LED_NAME_NUM);
}
static gboolean
gdk_mir_keymap_get_entries_for_keyval (GdkKeymap *keymap,
guint keyval,
GdkKeymapKey **keys,
gint *n_keys)
{
//g_printerr ("gdk_mir_keymap_get_entries_for_keyval\n");
GdkMirKeymap *mir_keymap = GDK_MIR_KEYMAP (keymap);
GArray *key_array;
guint keycode;
key_array = g_array_new (FALSE, FALSE, sizeof (GdkKeymapKey));
for (keycode = 8; keycode < 255; keycode++) /* FIXME: min/max keycode */
{
gint num_layouts, layout;
num_layouts = xkb_keymap_num_layouts_for_key (mir_keymap->xkb_keymap, keycode);
for (layout = 0; layout < num_layouts; layout++)
{
gint num_levels, level;
num_levels = xkb_keymap_num_levels_for_key (mir_keymap->xkb_keymap, keycode, layout);
for (level = 0; level < num_levels; level++)
{
const xkb_keysym_t *syms;
gint num_syms, sym;
num_syms = xkb_keymap_key_get_syms_by_level (mir_keymap->xkb_keymap, keycode, layout, level, &syms);
for (sym = 0; sym < num_syms; sym++)
{
if (syms[sym] == keyval)
{
GdkKeymapKey key;
key.keycode = keycode;
key.group = layout;
key.level = level;
g_array_append_val (key_array, key);
}
}
}
}
}
*n_keys = key_array->len;
*keys = (GdkKeymapKey*) g_array_free (key_array, FALSE);
return TRUE;
}
static gboolean
gdk_mir_keymap_get_entries_for_keycode (GdkKeymap *keymap,
guint hardware_keycode,
GdkKeymapKey **keys,
guint **keyvals,
gint *n_entries)
{
//g_printerr ("gdk_mir_keymap_get_entries_for_keycode\n");
GdkMirKeymap *mir_keymap = GDK_MIR_KEYMAP (keymap);
gint num_layouts, layout;
gint num_entries;
gint i;
num_layouts = xkb_keymap_num_layouts_for_key (mir_keymap->xkb_keymap, hardware_keycode);
num_entries = 0;
for (layout = 0; layout < num_layouts; layout++)
num_entries += xkb_keymap_num_levels_for_key (mir_keymap->xkb_keymap, hardware_keycode, layout);
if (n_entries)
*n_entries = num_entries;
if (keys)
*keys = g_new0 (GdkKeymapKey, num_entries);
if (keyvals)
*keyvals = g_new0 (guint, num_entries);
i = 0;
for (layout = 0; layout < num_layouts; layout++)
{
gint num_levels, level;
num_levels = xkb_keymap_num_levels_for_key (mir_keymap->xkb_keymap, hardware_keycode, layout);
for (level = 0; level < num_levels; level++)
{
const xkb_keysym_t *syms;
int num_syms;
num_syms = xkb_keymap_key_get_syms_by_level (mir_keymap->xkb_keymap, hardware_keycode, layout, 0, &syms);
if (keys)
{
(*keys)[i].keycode = hardware_keycode;
(*keys)[i].group = layout;
(*keys)[i].level = level;
}
if (keyvals && num_syms > 0)
(*keyvals)[i] = syms[0];
i++;
}
}
return num_entries > 0;
}
static guint
gdk_mir_keymap_lookup_key (GdkKeymap *keymap,
const GdkKeymapKey *key)
{
//g_printerr ("gdk_mir_keymap_lookup_key\n");
GdkMirKeymap *mir_keymap = GDK_MIR_KEYMAP (keymap);
const xkb_keysym_t *syms;
int num_syms;
num_syms = xkb_keymap_key_get_syms_by_level (mir_keymap->xkb_keymap,
key->keycode,
key->group,
key->level,
&syms);
if (num_syms > 0)
return syms[0];
else
return XKB_KEY_NoSymbol;
}
static guint32
get_xkb_modifiers (struct xkb_keymap *xkb_keymap,
GdkModifierType state)
{
guint32 mods = 0;
if (state & GDK_SHIFT_MASK)
mods |= 1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_SHIFT);
if (state & GDK_LOCK_MASK)
mods |= 1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_CAPS);
if (state & GDK_CONTROL_MASK)
mods |= 1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_CTRL);
if (state & GDK_MOD1_MASK)
mods |= 1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_ALT);
if (state & GDK_MOD2_MASK)
mods |= 1 << xkb_keymap_mod_get_index (xkb_keymap, "Mod2");
if (state & GDK_MOD3_MASK)
mods |= 1 << xkb_keymap_mod_get_index (xkb_keymap, "Mod3");
if (state & GDK_MOD4_MASK)
mods |= 1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_LOGO);
if (state & GDK_MOD5_MASK)
mods |= 1 << xkb_keymap_mod_get_index (xkb_keymap, "Mod5");
return mods;
}
static GdkModifierType
get_gdk_modifiers (struct xkb_keymap *xkb_keymap,
guint32 mods)
{
GdkModifierType state = 0;
if (mods & (1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_SHIFT)))
state |= GDK_SHIFT_MASK;
if (mods & (1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_CAPS)))
state |= GDK_LOCK_MASK;
if (mods & (1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_CTRL)))
state |= GDK_CONTROL_MASK;
if (mods & (1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_ALT)))
state |= GDK_MOD1_MASK;
if (mods & (1 << xkb_keymap_mod_get_index (xkb_keymap, "Mod2")))
state |= GDK_MOD2_MASK;
if (mods & (1 << xkb_keymap_mod_get_index (xkb_keymap, "Mod3")))
state |= GDK_MOD3_MASK;
if (mods & (1 << xkb_keymap_mod_get_index (xkb_keymap, XKB_MOD_NAME_LOGO)))
state |= GDK_MOD4_MASK;
if (mods & (1 << xkb_keymap_mod_get_index (xkb_keymap, "Mod5")))
state |= GDK_MOD5_MASK;
return state;
}
static gboolean
gdk_mir_keymap_translate_keyboard_state (GdkKeymap *keymap,
guint hardware_keycode,
GdkModifierType state,
gint group,
guint *keyval,
gint *effective_group,
gint *effective_level,
GdkModifierType *consumed_modifiers)
{
//g_printerr ("gdk_mir_keymap_translate_keyboard_state\n");
GdkMirKeymap *mir_keymap = GDK_MIR_KEYMAP (keymap);
struct xkb_state *xkb_state;
guint32 modifiers;
guint32 consumed;
xkb_layout_index_t layout;
xkb_level_index_t level;
xkb_keysym_t sym;
modifiers = get_xkb_modifiers (mir_keymap->xkb_keymap, state);
xkb_state = xkb_state_new (mir_keymap->xkb_keymap);
xkb_state_update_mask (xkb_state, modifiers, 0, 0, group, 0, 0);
layout = xkb_state_key_get_layout (xkb_state, hardware_keycode);
level = xkb_state_key_get_level (xkb_state, hardware_keycode, layout);
sym = xkb_state_key_get_one_sym (xkb_state, hardware_keycode);
consumed = modifiers & ~xkb_state_mod_mask_remove_consumed (xkb_state, hardware_keycode, modifiers);
xkb_state_unref (xkb_state);
if (keyval)
*keyval = sym;
if (effective_group)
*effective_group = layout;
if (effective_level)
*effective_level = level;
if (consumed_modifiers)
*consumed_modifiers = get_gdk_modifiers (mir_keymap->xkb_keymap, consumed);
return TRUE;
}
static void
gdk_mir_keymap_add_virtual_modifiers (GdkKeymap *keymap,
GdkModifierType *state)
{
//g_printerr ("gdk_mir_keymap_add_virtual_modifiers\n");
// FIXME: What is this?
}
static gboolean
gdk_mir_keymap_map_virtual_modifiers (GdkKeymap *keymap,
GdkModifierType *state)
{
//g_printerr ("gdk_mir_keymap_map_virtual_modifiers\n");
// FIXME: What is this?
return TRUE;
}
static guint
gdk_mir_keymap_get_modifier_state (GdkKeymap *keymap)
{
//g_printerr ("gdk_mir_keymap_get_modifier_state\n");
GdkMirKeymap *mir_keymap = GDK_MIR_KEYMAP (keymap);
xkb_mod_mask_t mods;
mods = xkb_state_serialize_mods (mir_keymap->xkb_state, XKB_STATE_MODS_EFFECTIVE);
return get_gdk_modifiers (mir_keymap->xkb_keymap, mods);
}
static void
update_direction (GdkMirKeymap *keymap)
{
gint num_layouts;
gint *rtl;
guint key;
gboolean have_rtl, have_ltr;
gint i;
num_layouts = xkb_keymap_num_layouts (keymap->xkb_keymap);
g_free (keymap->direction);
keymap->direction = g_new0 (PangoDirection, num_layouts);
rtl = g_new0 (gint, num_layouts);
for (key = 8; key < 255; key++) /* FIXME: min/max keycode */
{
gint layouts;
gint layout;
layouts = xkb_keymap_num_layouts_for_key (keymap->xkb_keymap, key);
for (layout = 0; layout < layouts; layout++)
{
const xkb_keysym_t *syms;
gint num_syms;
gint sym;
num_syms = xkb_keymap_key_get_syms_by_level (keymap->xkb_keymap, key, layout, 0, &syms);
for (sym = 0; sym < num_syms; sym++)
{
PangoDirection dir;
dir = pango_unichar_direction (xkb_keysym_to_utf32 (syms[sym]));
switch (dir)
{
case PANGO_DIRECTION_RTL:
rtl[layout]++;
break;
case PANGO_DIRECTION_LTR:
rtl[layout]--;
break;
default:
break;
}
}
}
}
have_rtl = have_ltr = FALSE;
for (i = 0; i < num_layouts; i++)
{
if (rtl[i] > 0)
{
keymap->direction[i] = PANGO_DIRECTION_RTL;
have_rtl = TRUE;
}
else
{
keymap->direction[i] = PANGO_DIRECTION_LTR;
have_ltr = TRUE;
}
}
if (have_rtl && have_ltr)
keymap->bidi = TRUE;
g_free (rtl);
}
static void
gdk_mir_keymap_init (GdkMirKeymap *keymap)
{
struct xkb_context *context;
struct xkb_rule_names names;
context = xkb_context_new (0);
names.rules = "evdev";
names.model = "pc105";
names.layout = "us";
names.variant = "";
names.options = "";
keymap->xkb_keymap = xkb_keymap_new_from_names (context, &names, 0);
keymap->xkb_state = xkb_state_new (keymap->xkb_keymap);
xkb_context_unref (context);
update_direction (keymap);
}
static void
gdk_mir_keymap_finalize (GObject *object)
{
GdkMirKeymap *keymap = GDK_MIR_KEYMAP (object);
xkb_keymap_unref (keymap->xkb_keymap);
xkb_state_unref (keymap->xkb_state);
g_free (keymap->direction);
G_OBJECT_CLASS (gdk_mir_keymap_parent_class)->finalize (object);
}
static void
gdk_mir_keymap_class_init (GdkMirKeymapClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GdkKeymapClass *keymap_class = GDK_KEYMAP_CLASS (klass);
object_class->finalize = gdk_mir_keymap_finalize;
keymap_class->get_direction = gdk_mir_keymap_get_direction;
keymap_class->have_bidi_layouts = gdk_mir_keymap_have_bidi_layouts;
keymap_class->get_caps_lock_state = gdk_mir_keymap_get_caps_lock_state;
keymap_class->get_num_lock_state = gdk_mir_keymap_get_num_lock_state;
keymap_class->get_entries_for_keyval = gdk_mir_keymap_get_entries_for_keyval;
keymap_class->get_entries_for_keycode = gdk_mir_keymap_get_entries_for_keycode;
keymap_class->lookup_key = gdk_mir_keymap_lookup_key;
keymap_class->translate_keyboard_state = gdk_mir_keymap_translate_keyboard_state;
keymap_class->add_virtual_modifiers = gdk_mir_keymap_add_virtual_modifiers;
keymap_class->map_virtual_modifiers = gdk_mir_keymap_map_virtual_modifiers;
keymap_class->get_modifier_state = gdk_mir_keymap_get_modifier_state;
}
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