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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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25
ui/input-legacy.c
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@ -110,12 +110,13 @@ static void legacy_kbd_event(DeviceState *dev, QemuConsole *src,
{
QEMUPutKbdEntry *entry = (QEMUPutKbdEntry *)dev;
int scancodes[3], i, count;
InputKeyEvent *key = evt->u.key;
if (!entry || !entry->put_kbd) {
return;
}
count = qemu_input_key_value_to_scancode(evt->u.key->key,
evt->u.key->down,
count = qemu_input_key_value_to_scancode(key->key,
key->down,
scancodes);
for (i = 0; i < count; i++) {
entry->put_kbd(entry->opaque, scancodes[i]);
@ -150,23 +151,25 @@ static void legacy_mouse_event(DeviceState *dev, QemuConsole *src,
[INPUT_BUTTON_RIGHT] = MOUSE_EVENT_RBUTTON,
};
QEMUPutMouseEntry *s = (QEMUPutMouseEntry *)dev;
InputBtnEvent *btn;
InputMoveEvent *move;
switch (evt->type) {
case INPUT_EVENT_KIND_BTN:
if (evt->u.btn->down) {
s->buttons |= bmap[evt->u.btn->button];
btn = evt->u.btn;
if (btn->down) {
s->buttons |= bmap[btn->button];
} else {
s->buttons &= ~bmap[evt->u.btn->button];
s->buttons &= ~bmap[btn->button];
}
if (evt->u.btn->down && evt->u.btn->button == INPUT_BUTTON_WHEEL_UP) {
if (btn->down && btn->button == INPUT_BUTTON_WHEEL_UP) {
s->qemu_put_mouse_event(s->qemu_put_mouse_event_opaque,
s->axis[INPUT_AXIS_X],
s->axis[INPUT_AXIS_Y],
-1,
s->buttons);
}
if (evt->u.btn->down &&
evt->u.btn->button == INPUT_BUTTON_WHEEL_DOWN) {
if (btn->down && btn->button == INPUT_BUTTON_WHEEL_DOWN) {
s->qemu_put_mouse_event(s->qemu_put_mouse_event_opaque,
s->axis[INPUT_AXIS_X],
s->axis[INPUT_AXIS_Y],
@ -175,10 +178,12 @@ static void legacy_mouse_event(DeviceState *dev, QemuConsole *src,
}
break;
case INPUT_EVENT_KIND_ABS:
s->axis[evt->u.abs->axis] = evt->u.abs->value;
move = evt->u.abs;
s->axis[move->axis] = move->value;
break;
case INPUT_EVENT_KIND_REL:
s->axis[evt->u.rel->axis] += evt->u.rel->value;
move = evt->u.rel;
s->axis[move->axis] += move->value;
break;
default:
break;