/*ARGSUSED*/
static void
XawScrollbarRedisplay(Widget gw, XEvent *event, Region region)
{
ScrollbarWidget w = (ScrollbarWidget)gw;
int x, y;
unsigned int width, height;
if (Superclass->core_class.expose)
(*Superclass->core_class.expose)(gw, event, region);
if (w->scrollbar.orientation == XtorientHorizontal) {
x = w->scrollbar.topLoc;
y = 1;
width = w->scrollbar.shownLength;
height = XtHeight(w) - 2;
}
else {
x = 1;
y = w->scrollbar.topLoc;
width = XtWidth(w) - 2;
height = w->scrollbar.shownLength;
}
if (region == NULL ||
XRectInRegion(region, x, y, width, height) != RectangleOut) {
/* Forces entire thumb to be painted */
w->scrollbar.topLoc = -(w->scrollbar.length + 1);
PaintThumb(w);
}
}
void CScrollBarUI::DoPaint(HDC hDC, const RECT& rcPaint)
{
if( !::IntersectRect(&m_rcPaint, &rcPaint, &m_rcItem) ) return;
PaintBk(hDC);
PaintButton1(hDC);
PaintButton2(hDC);
PaintThumb(hDC);
PaintRail(hDC);
}
/* Set the scroll bar to the given location. */
void
XawScrollbarSetThumb(Widget gw,
#if NeedWidePrototypes
double top, double shown
#else
float top, float shown
#endif
)
{
ScrollbarWidget w = (ScrollbarWidget)gw;
if (w->scrollbar.direction == 'c') /* if still thumbing */
return;
w->scrollbar.top = top > 1.0 ? 1.0 : top >= 0.0 ? top : w->scrollbar.top;
w->scrollbar.shown = shown > 1.0 ? 1.0 : shown >= 0.0 ?
shown : w->scrollbar.shown;
PaintThumb(w);
}
/*ARGSUSED*/
static void
NotifyThumb(Widget gw, XEvent *event, String *params, Cardinal *num_params)
{
ScrollbarWidget w = (ScrollbarWidget)gw;
union {
XtPointer xtp;
float xtf;
} xtpf;
if (w->scrollbar.direction == 0) /* if no StartScroll */
return;
if (LookAhead(gw, event))
return;
/* thumbProc is not pretty, but is necessary for backwards
compatibility on those architectures for which it work{s,ed};
the intent is to pass a (truncated) float by value. */
xtpf.xtf = w->scrollbar.top;
XtCallCallbacks(gw, XtNthumbProc, xtpf.xtp);
XtCallCallbacks(gw, XtNjumpProc, (XtPointer)&w->scrollbar.top);
PaintThumb(w);
}
