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keymap: consider modifier state when picking a mapping

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Pass the modifier state to the keymap lookup function.  In case multiple
keysym -> keycode mappings exist look at the modifier state and prefer
the mapping where the modifier state matches.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20180222070513.8740-6-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann 2018-02-22 08:05:13 +01:00
parent 23ad24e48c
commit abb4f2c965
5 changed files with 48 additions and 6 deletions
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3
ui/curses.c
View file

@ -271,7 +271,8 @@ static void curses_refresh(DisplayChangeListener *dcl)
keysym = chr;
}
keycode = keysym2scancode(kbd_layout, keysym & KEYSYM_MASK);
keycode = keysym2scancode(kbd_layout, keysym & KEYSYM_MASK,
false, false, false);
if (keycode == 0)
continue;

33
ui/keymaps.c
View file

@ -176,8 +176,12 @@ kbd_layout_t *init_keyboard_layout(const name2keysym_t *table,
}
int keysym2scancode(kbd_layout_t *k, int keysym)
int keysym2scancode(kbd_layout_t *k, int keysym,
bool shift, bool altgr, bool ctrl)
{
static const uint32_t mask =
SCANCODE_SHIFT | SCANCODE_ALTGR | SCANCODE_CTRL;
uint32_t mods, i;
struct keysym2code *keysym2code;
#ifdef XK_ISO_Left_Tab
@ -193,6 +197,33 @@ int keysym2scancode(kbd_layout_t *k, int keysym)
return 0;
}
if (keysym2code->count == 1) {
return keysym2code->keycodes[0];
}
/*
* We have multiple keysym -> keycode mappings.
*
* Check whenever we find one mapping where the modifier state of
* the mapping matches the current user interface modifier state.
* If so, prefer that one.
*/
mods = 0;
if (shift) {
mods |= SCANCODE_SHIFT;
}
if (altgr) {
mods |= SCANCODE_ALTGR;
}
if (ctrl) {
mods |= SCANCODE_CTRL;
}
for (i = 0; i < keysym2code->count; i++) {
if ((keysym2code->keycodes[i] & mask) == mods) {
return keysym2code->keycodes[i];
}
}
return keysym2code->keycodes[0];
}

3
ui/keymaps.h
View file

@ -54,7 +54,8 @@ typedef struct kbd_layout_t kbd_layout_t;
kbd_layout_t *init_keyboard_layout(const name2keysym_t *table,
const char *language);
int keysym2scancode(kbd_layout_t *k, int keysym);
int keysym2scancode(kbd_layout_t *k, int keysym,
bool shift, bool altgr, bool ctrl);
int keycode_is_keypad(kbd_layout_t *k, int keycode);
int keysym_is_numlock(kbd_layout_t *k, int keysym);

6
ui/sdl.c
View file

@ -201,6 +201,9 @@ static kbd_layout_t *kbd_layout = NULL;
static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
{
bool shift = modifiers_state[0x2a] || modifiers_state[0x36];
bool altgr = modifiers_state[0xb8];
bool ctrl = modifiers_state[0x1d] || modifiers_state[0x9d];
int keysym;
/* workaround for X11+SDL bug with AltGR */
keysym = ev->keysym.sym;
@ -210,7 +213,8 @@ static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
if (keysym == 92 && ev->keysym.scancode == 133) {
keysym = 0xa5;
}
return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
return keysym2scancode(kbd_layout, keysym,
shift, altgr, ctrl) & SCANCODE_KEYMASK;
}

9
ui/vnc.c
View file

@ -1734,7 +1734,8 @@ static void reset_keys(VncState *vs)
static void press_key(VncState *vs, int keysym)
{
int keycode = keysym2scancode(vs->vd->kbd_layout, keysym) & SCANCODE_KEYMASK;
int keycode = keysym2scancode(vs->vd->kbd_layout, keysym,
false, false, false) & SCANCODE_KEYMASK;
qemu_input_event_send_key_number(vs->vd->dcl.con, keycode, true);
qemu_input_event_send_key_delay(vs->vd->key_delay_ms);
qemu_input_event_send_key_number(vs->vd->dcl.con, keycode, false);
@ -1993,6 +1994,9 @@ static const char *code2name(int keycode)
static void key_event(VncState *vs, int down, uint32_t sym)
{
bool shift = vs->modifiers_state[0x2a] || vs->modifiers_state[0x36];
bool altgr = vs->modifiers_state[0xb8];
bool ctrl = vs->modifiers_state[0x1d] || vs->modifiers_state[0x9d];
int keycode;
int lsym = sym;
@ -2000,7 +2004,8 @@ static void key_event(VncState *vs, int down, uint32_t sym)
lsym = lsym - 'A' + 'a';
}
keycode = keysym2scancode(vs->vd->kbd_layout, lsym & 0xFFFF) & SCANCODE_KEYMASK;
keycode = keysym2scancode(vs->vd->kbd_layout, lsym & 0xFFFF,
shift, altgr, ctrl) & SCANCODE_KEYMASK;
trace_vnc_key_event_map(down, sym, keycode, code2name(keycode));
do_key_event(vs, down, keycode, sym);
}