void ArrowInteractor::Redraw (Coord, Coord, Coord, Coord) {
const char* none = "None";
Coord x[3], y[3];
if (canvas != nil) {
output->ClearRect(canvas, 0, 0, xmax, ymax);
if (_brush->None()) {
const Font* f = output->GetFont();
int width = f->Width(none);
int height = f->Height();
output->MoveTo((xmax - width + 1)/2, (ymax - height + 1)/2);
output->Text(canvas, none);
} else {
const Color* origfg = output->GetFgColor();
const Color* origbg = output->GetBgColor();
Resource::ref(origfg);
Resource::ref(origbg);
output->SetBrush(_brush);
output->SetColors(_fg, _bg);
#if __GNUC__>=2 && __GNUC_MINOR__>=5 || __GNUC__>=3
#undef Line
output->Line(canvas, HPAD, ymax/2, xmax-HPAD, ymax/2);
#define Line _lib_iv(Line)
#else
output->Line(canvas, HPAD, ymax/2, xmax-HPAD, ymax/2);
#endif /* Line */
/* remove the dashing for the arrowheads */
if (_head || _tail)
if (_brush->dashed())
output->SetBrush(new PSBrush(0, _brush->Width()));
if (_head) {
x[2] = x[0] = xmax-ARROWX;
y[0] = ymax/2 - ARROWY;
x[1] = xmax-HPAD;
y[1] = ymax/2;
y[2] = ymax/2 + ARROWY;
#if __GNUC__>=2 && __GNUC_MINOR__>=5 || __GNUC__>=3
#undef MultiLine
output->MultiLine(canvas, x, y, 3);
#define MultiLine _lib_iv(MultiLine)
#else
output->MultiLine(canvas, x, y, 3);
#endif /* MultiLine */
}
if (_tail) {
x[2] = x[0] = ARROWX;
y[0] = ymax/2 - ARROWY;
x[1] = HPAD;
y[1] = ymax/2;
y[2] = ymax/2 + ARROWY;
#if __GNUC__>=2 && __GNUC_MINOR__>=5 || __GNUC__>=3
#undef MultiLine
output->MultiLine(canvas, x, y, 3);
#define MultiLine _lib_iv(MultiLine)
#else
output->MultiLine(canvas, x, y, 3);
#endif /* MultiLine */
}
if (_brush->Width() == 0) {
CenterText("0", output, xmax, ymax);
output->Text(canvas, "0");
}
output->SetColors(origfg, origbg);
Resource::unref(origfg);
Resource::unref(origbg);
}
}
}
