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work around for bug with mouse driver on lombard powerbook.

This commit is contained in:
crs 2002-06-20 09:19:55 +00:00
parent a16e7217ce
commit 4f418e015e
1 changed files with 14 additions and 2 deletions
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16
server/CXWindowsPrimaryScreen.cpp
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@ -187,8 +187,20 @@ CXWindowsPrimaryScreen::run()
} while (!xevent.xmotion.send_event);
}
// warp mouse back to center
if (x != 0 || y != 0) {
// warp mouse back to center. my lombard (powerbook
// g3) using the adbmouse driver has two problems:
// first, the driver only sends motions of +/-2
// pixels and, second, it seems to discard some
// physical input after a warp. the former isn't a
// big deal (we're just limited to every other
// pixel) but the latter is a PITA. to work around
// it we only warp when the mouse has moved more
// than s_size pixels from the center.
static const SInt32 s_size = 32;
if (xevent.xmotion.x_root - m_xCenter < -s_size ||
xevent.xmotion.x_root - m_xCenter > s_size ||
xevent.xmotion.y_root - m_yCenter < -s_size ||
xevent.xmotion.y_root - m_yCenter > s_size) {
CDisplayLock display(this);
// send an event that we can recognize before
// the mouse warp.