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19c1b9fd3d
It is possible that the modifier state on keyup is different from the
modifier state on keydown. In that case the keycode lookup can end up
with different keys in case multiple keysym -> keycode mappings exist,
because it picks the mapping depending on modifier state.
To fix that change the lookup logic for keyup events. Instead of
looking at the modifier state check the key state and prefer a keycodes
where the key is in "down" state right now.
Fixes: abb4f2c965 keymap: consider modifier state when picking a mapping
Buglink: https://bugs.launchpad.net/bugs/1738283
Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1658676
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20190122092814.14919-9-kraxel@redhat.com
63 lines
2.2 KiB
C
63 lines
2.2 KiB
C
/*
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* QEMU keysym to keycode conversion using rdesktop keymaps
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*
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* Copyright (c) 2004 Johannes Schindelin
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef QEMU_KEYMAPS_H
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#define QEMU_KEYMAPS_H
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#include "qemu-common.h"
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#include "ui/kbd-state.h"
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typedef struct {
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const char* name;
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int keysym;
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} name2keysym_t;
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/* scancode without modifiers */
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#define SCANCODE_KEYMASK 0xff
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/* scancode without grey or up bit */
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#define SCANCODE_KEYCODEMASK 0x7f
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/* "grey" keys will usually need a 0xe0 prefix */
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#define SCANCODE_GREY 0x80
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#define SCANCODE_EMUL0 0xE0
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#define SCANCODE_EMUL1 0xE1
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/* "up" flag */
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#define SCANCODE_UP 0x80
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/* Additional modifiers to use if not catched another way. */
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#define SCANCODE_SHIFT 0x100
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#define SCANCODE_CTRL 0x200
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#define SCANCODE_ALT 0x400
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#define SCANCODE_ALTGR 0x800
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typedef struct kbd_layout_t kbd_layout_t;
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kbd_layout_t *init_keyboard_layout(const name2keysym_t *table,
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const char *language, Error **errp);
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int keysym2scancode(kbd_layout_t *k, int keysym,
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QKbdState *kbd, bool down);
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int keycode_is_keypad(kbd_layout_t *k, int keycode);
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int keysym_is_numlock(kbd_layout_t *k, int keysym);
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#endif /* QEMU_KEYMAPS_H */
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