// When selecting: redraw all (for statistics)
static void SelectCB(Widget w, XtPointer, XtPointer)
{
XClearArea(XtDisplay(w), XtWindow(w), 0, 0, 0, 0, false);
redraw(w,
BoxRegion(BoxPoint(0,0), thebox->size()),
BoxRegion(BoxPoint(0,0), BoxSize(1000000, 1000000)));
}
// Draw
void LineBox::_draw(Widget w,
const BoxRegion& r,
const BoxRegion& exposed,
GC gc,
bool context_selected) const
{
XGCValues gcvalues;
// Set width and cap style; project beyond end point up to 1/2
// line thickness
gcvalues.line_width = _linethickness;
gcvalues.cap_style = CapProjecting;
XChangeGC(XtDisplay(w), gc, GCLineWidth | GCCapStyle, &gcvalues);
// Keep an empty frame of 1/2 line thickness around R (X may cross
// R's boundaries otherwise)
BoxPoint origin = r.origin();
BoxSize space = r.space();
origin += _linethickness / 2;
space -= _linethickness;
// Draw children
__draw(w, BoxRegion(origin, space), exposed, gc, context_selected);
// Attention: We leave LINE_WIDTH and CAP_STYLE changed!
// (Works within Box::draw(), but the used GC may be changed)
}
BoxRegion BoxEdgeAnnotation::region(const BoxPoint& p, const GraphGC& gc) const
{
// Center box horizontally 2 pixels above P
BoxPoint origin(p);
origin[X] -= size(gc)[X] / 2;
origin[Y] -= size(gc)[Y] + 2;
return BoxRegion(origin, size(gc));
}
// Expose Callback
static void ExposeCB(Widget w, XtPointer, XtPointer call_data)
{
// Set size
Arg arglist[10];
int a = 0;
XtSetArg(arglist[a], XtNwidth, thebox->size(X)); a++;
XtSetArg(arglist[a], XtNheight, thebox->size(Y)); a++;
XtSetValues(w, arglist, a);
// Get region
XExposeEvent* event = (XExposeEvent *)call_data;
BoxPoint expose_origin = BoxPoint(event->x, event->y);
BoxSize expose_space = BoxSize(event->width, event->height);
BoxRegion exposed(expose_origin, expose_space);
redraw(w, BoxRegion(BoxPoint(0,0), thebox->size()), exposed);
}
// Draw DiagBox
void DiagBox::_draw(Widget w,
const BoxRegion& r,
const BoxRegion& exposed, GC gc,
bool context_selected) const
{
const BoxSize space = r.space();
const BoxPoint origin = r.origin();
// Draw a 10-pixel-grid
BoxCoordinate i;
for (i = 0; i < space[X]; i += 10)
XDrawLine(XtDisplay(w), XtWindow(w), gc,
origin[X] + i, origin[Y], origin[X] + i, origin[Y] + space[Y]);
for (i = 0; i < space[Y]; i += 10)
XDrawLine(XtDisplay(w), XtWindow(w), gc,
origin[X], origin[Y] + i, origin[X] + space[X], origin[Y] + i);
// Make space info
std::ostringstream oss;
oss << space << '\0';
const string ss(oss);
// Draw it (centered)
StringBox *s = new StringBox(ss);
const BoxSize stringSize = s->size();
const BoxPoint stringOrigin = origin + space/2 - stringSize/2;
XClearArea(XtDisplay(w), XtWindow(w), stringOrigin[X], stringOrigin[Y],
stringSize[X], stringSize[Y], False);
s->draw(w, BoxRegion(stringOrigin, stringSize), exposed,
gc, context_selected);
s->unlink();
}
void ArcGraphEdge::_print(std::ostream& os,
const GraphGC& gc) const
{
makeLine(0, BoxRegion(), os, gc);
}
