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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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27
hw/input/ps2.c
View file

@ -182,10 +182,11 @@ static void ps2_keyboard_event(DeviceState *dev, QemuConsole *src,
{
PS2KbdState *s = (PS2KbdState *)dev;
int scancodes[3], i, count;
InputKeyEvent *key = evt->u.key;
qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER);
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++) {
ps2_put_keycode(s, scancodes[i]);
@ -389,6 +390,8 @@ static void ps2_mouse_event(DeviceState *dev, QemuConsole *src,
[INPUT_BUTTON_RIGHT] = MOUSE_EVENT_RBUTTON,
};
PS2MouseState *s = (PS2MouseState *)dev;
InputMoveEvent *move;
InputBtnEvent *btn;
/* check if deltas are recorded when disabled */
if (!(s->mouse_status & MOUSE_STATUS_ENABLED))
@ -396,23 +399,25 @@ static void ps2_mouse_event(DeviceState *dev, QemuConsole *src,
switch (evt->type) {
case INPUT_EVENT_KIND_REL:
if (evt->u.rel->axis == INPUT_AXIS_X) {
s->mouse_dx += evt->u.rel->value;
} else if (evt->u.rel->axis == INPUT_AXIS_Y) {
s->mouse_dy -= evt->u.rel->value;
move = evt->u.rel;
if (move->axis == INPUT_AXIS_X) {
s->mouse_dx += move->value;
} else if (move->axis == INPUT_AXIS_Y) {
s->mouse_dy -= move->value;
}
break;
case INPUT_EVENT_KIND_BTN:
if (evt->u.btn->down) {
s->mouse_buttons |= bmap[evt->u.btn->button];
if (evt->u.btn->button == INPUT_BUTTON_WHEEL_UP) {
btn = evt->u.btn;
if (btn->down) {
s->mouse_buttons |= bmap[btn->button];
if (btn->button == INPUT_BUTTON_WHEEL_UP) {
s->mouse_dz--;
} else if (evt->u.btn->button == INPUT_BUTTON_WHEEL_DOWN) {
} else if (btn->button == INPUT_BUTTON_WHEEL_DOWN) {
s->mouse_dz++;
}
} else {
s->mouse_buttons &= ~bmap[evt->u.btn->button];
s->mouse_buttons &= ~bmap[btn->button];
}
break;