static void
queryTabletPos(GLUTwindow * window)
{
#if !defined(WIN32)
XDeviceState *state;
XInputClass *any;
XValuatorState *v;
int i;
state = XQueryDeviceState(__glutDisplay, __glutTablet);
any = state->data;
for (i = 0; i < state->num_classes; i++) {
switch (any->class) {
case ValuatorClass:
v = (XValuatorState *) any;
if (v->num_valuators < 2)
goto end;
if (window->tabletPos[0] == -1)
window->tabletPos[0] = normalizeTabletPos(0, v->valuators[0]);
if (window->tabletPos[1] == -1)
window->tabletPos[1] = normalizeTabletPos(1, v->valuators[1]);
}
any = (XInputClass *) ((char *) any + any->length);
}
end:
XFreeDeviceState(state);
#endif /* !WIN32 */
}
static void
queryTabletPos(GLUTwindow * window)
{
XDeviceState *state;
XInputClass *any;
XValuatorState *v;
int i;
state = XQueryDeviceState(__glutDisplay, __glutTablet);
any = state->data;
for (i = 0; i < state->num_classes; i++) {
#if defined(__cplusplus) || defined(c_plusplus)
switch (any->c_class) {
#else
switch (any->class) {
#endif
case ValuatorClass:
v = (XValuatorState *) any;
if (v->num_valuators < 2)
goto end;
if (window->tabletPos[0] == -1)
window->tabletPos[0] = normalizeTabletPos(0, v->valuators[0]);
if (window->tabletPos[1] == -1)
window->tabletPos[1] = normalizeTabletPos(1, v->valuators[1]);
}
any = (XInputClass *) ((char *) any + any->length);
}
end:
XFreeDeviceState(state);
}
static void
tabletPosChange(GLUTwindow * window, int first, int count, int *data)
{
int i, value, genEvent = 0;
for (i = first; i < first + count; i++) {
switch (i) {
case 0: /* X axis */
case 1: /* Y axis */
value = normalizeTabletPos(i, data[i - first]);
if (value != window->tabletPos[i]) {
window->tabletPos[i] = value;
genEvent = 1;
}
break;
}
}
if (window->tabletPos[0] == -1 || window->tabletPos[1] == -1)
queryTabletPos(window);
if (genEvent)
window->tabletMotion(window->tabletPos[0], window->tabletPos[1]);
}
static void
tabletPosChange(GLUTwindow * window, int first, int count, int *data)
{
int i, value, genEvent = 0;
for (i = first; i < first + count; i++) {
switch (i) {
case 0: /* X axis */
case 1: /* Y axis */
value = normalizeTabletPos(i, data[i - first]);
if (value != window->tabletPos[i]) {
window->tabletPos[i] = value;
genEvent = 1;
}
break;
}
}
if (window->tabletPos[0] == -1 || window->tabletPos[1] == -1)
queryTabletPos(window);
if (genEvent)
window->tabletMotion(window->tabletPos[0], window->tabletPos[1]);
}