// Draw a RegionGraphNode
void RegionGraphNode::draw(Widget w,
const BoxRegion& exposed,
const GraphGC& gc) const
{
const BoxRegion& r = region(gc);
// if not exposed or invisible, return
if (!(r <= exposed) || r.space(X) == 0 || r.space(Y) == 0)
return;
Display *display = XtDisplay(w);
Window window = XtWindow(w);
// clear the area
XFillRectangle(display, window, gc.clearGC,
r.origin(X), r.origin(Y),
r.space(X), r.space(Y));
// draw contents
forceDraw(w, exposed, gc);
// if selected, invert area
if (selected())
{
const BoxRegion& h = highlightRegion(gc);
XFillRectangle(display, window, gc.invertGC,
h.origin(X), h.origin(Y),
h.space(X), h.space(Y));
}
}
// Draw a BoxGraphNode
void BoxGraphNode::forceDraw(Widget w,
const BoxRegion& /* exposed */,
const GraphGC& gc) const
{
assert(box() != 0);
// assert(box()->OK());
// We do not check for exposures here --
// boxes are usually small and partial display
// doesn't work well with scrolling
static BoxRegion exposed(BoxPoint(0, 0), BoxSize(INT_MAX, INT_MAX));
if (selected() && highlight())
{
box()->draw(w, region(gc), exposed, gc.nodeGC, false);
bool use_color = ColorBox::use_color;
ColorBox::use_color = false;
BoxRegion r = highlightRegion(gc);
if (r <= exposed)
{
XFillRectangle(XtDisplay(w), XtWindow(w), gc.clearGC,
r.origin(X), r.origin(Y),
r.space(X), r.space(Y));
highlight()->draw(w, r, r, gc.nodeGC, false);
}
ColorBox::use_color = use_color;
}
else if (selected())
{
bool use_color = ColorBox::use_color;
ColorBox::use_color = false;
box()->draw(w, region(gc), exposed, gc.nodeGC, false);
ColorBox::use_color = use_color;
}
else
{
box()->draw(w, region(gc), exposed, gc.nodeGC, false);
}
}
