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dix: add aux. functions for button_is_down, set_button_down, set_button_up.

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Same as the matching key functions. Buttons, like keys, can have two states
for down/up - one posted, one processed. Posted is set during event
generation (usually in the signal handler). Processed is set during event
processing when the event queue is emptied and events are being delivered to
the client.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
This commit is contained in:
Peter Hutterer 2010-07-06 09:16:42 +10:00
commit a1afe17255
3 changed files with 46 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

35
dix/getevents.c
View file

@ -90,6 +90,37 @@ GetMotionHistorySize(void)
return MOTION_HISTORY_SIZE;
}
void
set_button_down(DeviceIntPtr pDev, int button, int type)
{
if (type == BUTTON_PROCESSED)
SetBit(pDev->button->down, button);
else
SetBit(pDev->button->postdown, button);
}
void
set_button_up(DeviceIntPtr pDev, int button, int type)
{
if (type == BUTTON_PROCESSED)
ClearBit(pDev->button->down, button);
else
ClearBit(pDev->button->postdown, button);
}
Bool
button_is_down(DeviceIntPtr pDev, int button, int type)
{
int ret = 0;
if (type & BUTTON_PROCESSED)
ret |= !!BitIsOn(pDev->button->down, button);
if (type & BUTTON_POSTED)
ret |= !!BitIsOn(pDev->button->postdown, button);
return ret;
}
void
set_key_down(DeviceIntPtr pDev, int key_code, int type)
{
@ -1123,11 +1154,11 @@ GetPointerEvents(EventList *events, DeviceIntPtr pDev, int type, int buttons,
else {
if (type == ButtonPress) {
event->type = ET_ButtonPress;
pDev->button->postdown[buttons >> 3] |= (1 << (buttons & 7));
set_button_down(pDev, buttons, BUTTON_POSTED);
}
else if (type == ButtonRelease) {
event->type = ET_ButtonRelease;
pDev->button->postdown[buttons >> 3] &= ~(1 << (buttons & 7));
set_button_up(pDev, buttons, BUTTON_POSTED);
}
event->detail.button = buttons;
}