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ui: Shorten references into InputEvent

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An upcoming patch will alter how simple unions, like InputEvent, are
laid out, which will impact all lines of the form 'evt->u.XXX'
(expanding it to the longer 'evt->u.XXX.data').  For better
legibility in that patch, and less need for line wrapping, it's better
to use a temporary variable to reduce the effect of a layout change to
just the variable initializations, rather than every reference within
an InputEvent.

There was one instance in hid.c:hid_pointer_event() where the code
was referring to evt->u.rel inside the case label where evt->u.abs
is the correct name; thankfully, both members of the union have the
same type, so it happened to work, but it is now cleaner.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1457021813-10704-8-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Eric Blake 2016-03-03 09:16:49 -07:00 • committed by Markus Armbruster
parent 0399293e5b
commit b5a1b44318
7 changed files with 129 additions and 89 deletions
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31
replay/replay-input.c
View file

@ -47,20 +47,24 @@ static InputEvent *qapi_clone_InputEvent(InputEvent *src)
void replay_save_input_event(InputEvent *evt)
{
InputKeyEvent *key;
InputBtnEvent *btn;
InputMoveEvent *move;
replay_put_dword(evt->type);
switch (evt->type) {
case INPUT_EVENT_KIND_KEY:
replay_put_dword(evt->u.key->key->type);
key = evt->u.key;
replay_put_dword(key->key->type);
switch (evt->u.key->key->type) {
switch (key->key->type) {
case KEY_VALUE_KIND_NUMBER:
replay_put_qword(evt->u.key->key->u.number);
replay_put_byte(evt->u.key->down);
replay_put_qword(key->key->u.number);
replay_put_byte(key->down);
break;
case KEY_VALUE_KIND_QCODE:
replay_put_dword(evt->u.key->key->u.qcode);
replay_put_byte(evt->u.key->down);
replay_put_dword(key->key->u.qcode);
replay_put_byte(key->down);
break;
case KEY_VALUE_KIND__MAX:
/* keep gcc happy */
@ -68,16 +72,19 @@ void replay_save_input_event(InputEvent *evt)
}
break;
case INPUT_EVENT_KIND_BTN:
replay_put_dword(evt->u.btn->button);
replay_put_byte(evt->u.btn->down);
btn = evt->u.btn;
replay_put_dword(btn->button);
replay_put_byte(btn->down);
break;
case INPUT_EVENT_KIND_REL:
replay_put_dword(evt->u.rel->axis);
replay_put_qword(evt->u.rel->value);
move = evt->u.rel;
replay_put_dword(move->axis);
replay_put_qword(move->value);
break;
case INPUT_EVENT_KIND_ABS:
replay_put_dword(evt->u.abs->axis);
replay_put_qword(evt->u.abs->value);
move = evt->u.abs;
replay_put_dword(move->axis);
replay_put_qword(move->value);
break;
case INPUT_EVENT_KIND__MAX:
/* keep gcc happy */