void Plot2DAxes::_gradColorButtonCB(Fl_Widget * W)
{
unsigned char R = _gradColor.R;
unsigned char G = _gradColor.G;
unsigned char B = _gradColor.B;
if (fl_color_chooser("Axes Color", R, G, B, 1) != 0) { graduations(RGBc(R, G, B)); }
}
void Plot2DAxes::_numColorButtonCB(Fl_Widget * W)
{
unsigned char R = _numColor.R;
unsigned char G = _numColor.G;
unsigned char B = _numColor.B;
if (fl_color_chooser("Numbers Color", R, G, B, 1) != 0) { numbers(RGBc(R, G, B)); }
}
/**
* The getColor function associated with the image.
*
* @param pos The position
*
* @return The color of the pixel at that position.
**/
inline RGBc getColor(iVec2 pos)
{
if (_im == nullptr) return RGBc::c_Transparent;
const int64 lx = _im->width();
const int64 ly = _im->height();
int64 x = pos.X();
int64 y = pos.Y();
if (_typepos == TYPECENTER) { x += lx/2; y += ly/2; }
if ((x <0)||(y < 0)||(x >= lx)||(y >= ly)) return RGBc::c_Transparent;
y = ly - 1 - y;
const int64 lxy = lx*ly;
int64 off = x + lx*y;
const unsigned char * p = _im->data();
const char r = *(p + off);
const char g = *(p + off + lxy);
const char b = *(p + off + 2*lxy);
const char a = ((_im->spectrum() < 4) ? (const char)255 : (*(p + off + 3*lxy)));
return RGBc(r, g, b, a);
}
void Plotter2DObj::setNameWidgetColor()
{
if (!isFltkThread()) // run the method in FLTK if not in it
{
IndirectMemberProc<Plotter2DObj> proxy(*this, &Plotter2DObj::setNameWidgetColor); // registers the call
runInFltkThread(proxy);
return;
}
if ((pnot)_ownercb == nullptr) return; // return if not inserted
RGBc coul = nameWidgetColor();
if (coul.isTransparent()) { return; }
_nameBox->color(toFlColor(coul));
if ((int)coul.comp.R + (int)coul.comp.G + (int)coul.comp.B < 300)
{
_nameBox->labelcolor(toFlColor(RGBc(230, 230, 230)));
}
else
{
_nameBox->labelcolor(toFlColor(RGBc::c_Black));
}
_nameBox->redraw();
refresh();
yieldFocus();
}