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All evdev devices are slave devices, which means that xkb state and pointer position must be shared by emulating a core keyboard and a core pointer. Also, we must make sure to add all modifier state (keyboard and button) to our events. https://bugzilla.gnome.org/show_bug.cgi?id=705710
145 lines
4.1 KiB
C
145 lines
4.1 KiB
C
/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Copyright (C) 2010 Intel Corporation.
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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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* Authors:
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* Kristian Høgsberg
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* Damien Lespiau <damien.lespiau@intel.com>
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*/
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#include "clutter-keysyms.h"
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#include "clutter-xkb-utils.h"
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/*
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* _clutter_event_new_from_evdev: Create a new Clutter ClutterKeyEvent
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* @device: a ClutterInputDevice
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* @stage: the stage the event should be delivered to
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* @xkb: XKB rules to translate the event
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* @_time: timestamp of the event
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* @key: a key code coming from a Linux input device
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* @state: TRUE if a press event, FALSE if a release event
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* @modifer_state: in/out
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*
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* Translate @key to a #ClutterKeyEvent using rules from xbbcommon.
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*
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* Return value: the new #ClutterEvent
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*/
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ClutterEvent *
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_clutter_key_event_new_from_evdev (ClutterInputDevice *device,
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ClutterInputDevice *core_device,
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ClutterStage *stage,
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struct xkb_state *xkb_state,
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uint32_t button_state,
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uint32_t _time,
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xkb_keycode_t key,
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uint32_t state)
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{
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ClutterEvent *event;
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xkb_keysym_t sym;
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const xkb_keysym_t *syms;
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char buffer[8];
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int n;
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if (state)
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event = clutter_event_new (CLUTTER_KEY_PRESS);
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else
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event = clutter_event_new (CLUTTER_KEY_RELEASE);
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/* We use a fixed offset of 8 because evdev starts KEY_* numbering from
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* 0, whereas X11's minimum keycode, for really stupid reasons, is 8.
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* So the evdev XKB rules are based on the keycodes all being shifted
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* upwards by 8. */
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key += 8;
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n = xkb_key_get_syms (xkb_state, key, &syms);
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if (n == 1)
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sym = syms[0];
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else
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sym = XKB_KEY_NoSymbol;
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event->key.device = core_device;
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event->key.stage = stage;
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event->key.time = _time;
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event->key.modifier_state =
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xkb_state_serialize_mods (xkb_state, XKB_STATE_EFFECTIVE);
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event->key.modifier_state |= button_state;
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event->key.hardware_keycode = key;
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event->key.keyval = sym;
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clutter_event_set_source_device (event, device);
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n = xkb_keysym_to_utf8 (sym, buffer, sizeof (buffer));
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if (n == 0)
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{
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/* not printable */
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event->key.unicode_value = (gunichar) '\0';
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}
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else
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{
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event->key.unicode_value = g_utf8_get_char_validated (buffer, n);
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if (event->key.unicode_value == -1 || event->key.unicode_value == -2)
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event->key.unicode_value = (gunichar) '\0';
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}
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return event;
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}
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/*
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* _clutter_xkb_state_new:
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*
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* Create a new xkbcommon keymap and state object.
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*
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* FIXME: We need a way to override the layout here, a fixed or runtime
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* detected layout is provided by the backend calling _clutter_xkb_state_new();
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*/
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struct xkb_state *
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_clutter_xkb_state_new (const gchar *model,
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const gchar *layout,
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const gchar *variant,
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const gchar *options)
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{
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struct xkb_context *ctx;
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struct xkb_keymap *keymap;
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struct xkb_state *state;
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struct xkb_rule_names names;
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ctx = xkb_context_new(0);
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if (!ctx)
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return NULL;
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names.rules = "evdev";
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if (model)
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names.model = model;
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else
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names.model = "pc105";
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names.layout = layout;
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names.variant = variant;
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names.options = options;
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keymap = xkb_map_new_from_names(ctx, &names, 0);
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xkb_context_unref(ctx);
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if (!keymap)
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return NULL;
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state = xkb_state_new(keymap);
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xkb_map_unref(keymap);
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return state;
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}
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