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input: mouse: add helpers functions to core

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Likewise a bunch of helper functions to manage mouse button
and movement events, again to make life easier for the ui code.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2013-11-27 18:24:29 +01:00
parent cd10032888
commit 43579403a3
2 changed files with 85 additions and 0 deletions
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71
ui/input.c
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@ -116,3 +116,74 @@ void qemu_input_event_send_key_qcode(QemuConsole *src, QKeyCode q, bool down)
key->qcode = q;
qemu_input_event_send_key(src, key, down);
}
InputEvent *qemu_input_event_new_btn(InputButton btn, bool down)
{
InputEvent *evt = g_new0(InputEvent, 1);
evt->btn = g_new0(InputBtnEvent, 1);
evt->kind = INPUT_EVENT_KIND_BTN;
evt->btn->button = btn;
evt->btn->down = down;
return evt;
}
void qemu_input_queue_btn(QemuConsole *src, InputButton btn, bool down)
{
InputEvent *evt;
evt = qemu_input_event_new_btn(btn, down);
qemu_input_event_send(src, evt);
qapi_free_InputEvent(evt);
}
void qemu_input_update_buttons(QemuConsole *src, uint32_t *button_map,
uint32_t button_old, uint32_t button_new)
{
InputButton btn;
uint32_t mask;
for (btn = 0; btn < INPUT_BUTTON_MAX; btn++) {
mask = button_map[btn];
if ((button_old & mask) == (button_new & mask)) {
continue;
}
qemu_input_queue_btn(src, btn, button_new & mask);
}
}
int qemu_input_scale_axis(int value, int size_in, int size_out)
{
if (size_in < 2) {
return size_out / 2;
}
return (int64_t)value * (size_out - 1) / (size_in - 1);
}
InputEvent *qemu_input_event_new_move(InputEventKind kind,
InputAxis axis, int value)
{
InputEvent *evt = g_new0(InputEvent, 1);
InputMoveEvent *move = g_new0(InputMoveEvent, 1);
evt->kind = kind;
evt->data = move;
move->axis = axis;
move->value = value;
return evt;
}
void qemu_input_queue_rel(QemuConsole *src, InputAxis axis, int value)
{
InputEvent *evt;
evt = qemu_input_event_new_move(INPUT_EVENT_KIND_REL, axis, value);
qemu_input_event_send(src, evt);
qapi_free_InputEvent(evt);
}
void qemu_input_queue_abs(QemuConsole *src, InputAxis axis, int value, int size)
{
InputEvent *evt;
int scaled = qemu_input_scale_axis(value, size, INPUT_EVENT_ABS_SIZE);
evt = qemu_input_event_new_move(INPUT_EVENT_KIND_ABS, axis, scaled);
qemu_input_event_send(src, evt);
qapi_free_InputEvent(evt);
}