/* ARGSUSED */
static void draw_it (
XtPointer client_data,
XtIntervalId *id) /* unused */
{
EyesWidget w = (EyesWidget)client_data;
Window rep_root, rep_child;
int rep_rootx, rep_rooty;
unsigned int rep_mask;
int dx, dy;
TPoint mouse;
Display *dpy = XtDisplay (w);
Window win = XtWindow (w);
TPoint newpupil[2];
XPoint xnewpupil, xpupil;
if (XtIsRealized((Widget)w)) {
XQueryPointer (dpy, win, &rep_root, &rep_child,
&rep_rootx, &rep_rooty, &dx, &dy, &rep_mask);
mouse.x = Tx(dx, dy, &w->eyes.t);
mouse.y = Ty(dx, dy, &w->eyes.t);
if (!TPointEqual (mouse, w->eyes.mouse)) {
computePupils (mouse, newpupil);
xpupil.x = Xx(w->eyes.pupil[0].x, w->eyes.pupil[0].y, &w->eyes.t);
xpupil.y = Xy(w->eyes.pupil[0].x, w->eyes.pupil[0].y, &w->eyes.t);
xnewpupil.x = Xx(newpupil[0].x, newpupil[0].y, &w->eyes.t);
xnewpupil.y = Xy(newpupil[0].x, newpupil[0].y, &w->eyes.t);
if (!XPointEqual (xpupil, xnewpupil)) {
if (w->eyes.pupil[0].x != -1000 || w->eyes.pupil[0].y != -1000)
eyeBall (w, w->eyes.centerGC, 0);
w->eyes.pupil[0] = newpupil[0];
eyeBall (w, w->eyes.pupGC, 0);
}
xpupil.x = Xx(w->eyes.pupil[1].x, w->eyes.pupil[1].y, &w->eyes.t);
xpupil.y = Xy(w->eyes.pupil[1].x, w->eyes.pupil[1].y, &w->eyes.t);
xnewpupil.x = Xx(newpupil[1].x, newpupil[1].y, &w->eyes.t);
xnewpupil.y = Xy(newpupil[1].x, newpupil[1].y, &w->eyes.t);
if (!XPointEqual (xpupil, xnewpupil)) {
if (w->eyes.pupil[1].x != -1 || w->eyes.pupil[1].y != -1)
eyeBall (w, w->eyes.centerGC, 1);
w->eyes.pupil[1] = newpupil[1];
eyeBall (w, w->eyes.pupGC, 1);
}
w->eyes.mouse = mouse;
w->eyes.update = 0;
} else {
if (delays[w->eyes.update + 1] != 0)
++w->eyes.update;
}
}
w->eyes.interval_id =
XtAppAddTimeOut(XtWidgetToApplicationContext((Widget) w),
delays[w->eyes.update], draw_it, (XtPointer)w);
} /* draw_it */
static void
TFillArc(register Display * dpy, Drawable d, GC gc, Transform * t, double x, double y, double width, double height, int angle1, int angle2, XRectangle * rect)
{
int xx, xy, xw, xh;
xx = Xx(x, y, t);
xy = Xy(x, y, t);
xw = Xwidth(width, height, t);
xh = Xheight(width, height, t);
if (xw < 0) {
xx += xw;
xw = -xw;
}
if (xh < 0) {
xy += xh;
xh = -xh;
}
XFillArc(dpy, d, gc, xx, xy, xw, xh, angle1, angle2);
if (rect != NULL) {
rect->x = xx;
rect->y = xy;
rect->width = xw;
rect->height = xh;
}
}
static void
drawEye(EyesWidget w, TPoint newpupil, int num)
{
XPoint xnewpupil, xpupil;
xpupil.x = Xx(w->eyes.pupil[num].x, w->eyes.pupil[num].y, &w->eyes.t);
xpupil.y = Xy(w->eyes.pupil[num].x, w->eyes.pupil[num].y, &w->eyes.t);
xnewpupil.x = Xx(newpupil.x, newpupil.y, &w->eyes.t);
xnewpupil.y = Xy(newpupil.x, newpupil.y, &w->eyes.t);
if (
!XPointEqual(xpupil, xnewpupil)) {
TPoint oldpupil = w->eyes.pupil[num];
w->eyes.pupil[num] = newpupil;
eyeBall (w, TRUE, &oldpupil, num);
}
}
static void
FillArc(Display *dpy, Drawable d, GC gc, Transform *t, double x, double y,
double width, double height, int angle1, int angle2)
{
int xx, xy, xw, xh;
xx = Xx(x,y,t);
xy = Xy(x,y,t);
xw = Xwidth (width, height, t);
xh = Xheight (width, height, t);
if (xw < 0)
{
xx += xw;
xw = -xw;
}
if (xh < 0)
{
xy += xh;
xh = -xh;
}
XFillArc(dpy, d, gc, xx, xy, xw, xh, angle1, angle2);
}
