kc/src/libcmpp/fltk/Fl_Vert_Progress.cpp

//| Copyright: (C) 2019-2020 Kevin Larke <contact AT larke DOT org> 
//| License: GNU GPL version 3.0 or above. See the accompanying LICENSE file.
#include <FL/Fl.H>
#include <FL/fl_draw.H>
#include <Fl/Fl_Progress.H>
#include "Fl_Vert_Progress.h"

Fl_Vert_Progress::Fl_Vert_Progress(int x, int y, int w, int h, const char* l)
  : Fl_Progress(x,y,w,h)
{
}

// This member function is a slight variation on a verbatim
// copy of Fl_Progress.cxx from the FLTK source library.
void Fl_Vert_Progress::draw()
{
  int	progress;                 // Size of progress bar...
  int	bx, by, bw, bh;           // Box areas...
  int	tx, tw;                   // Temporary X + width

  // Get the box borders...
  bx = Fl::box_dx(box());
  by = Fl::box_dy(box());
  bw = Fl::box_dw(box());
  bh = Fl::box_dh(box());

  tx = x() + bx;
  tw = w() - bw;

  // Draw the progress bar...
  if (maximum() > minimum())
    progress = (int)(h() * (value() - minimum()) / (maximum() - minimum()) + 0.5f);
  else
    progress = 0;

  // Draw the box and label...
  if (progress > 0) 
  {
    Fl_Color c = labelcolor();
    labelcolor(fl_contrast(labelcolor(), selection_color()));

    fl_push_clip(x(), y() + h() - (progress + by), w(), progress + by);

    draw_box(box(), x(), y(), w(), h(), active_r() ? selection_color() : fl_inactive(selection_color()));

    draw_label(tx, y() + by, tw, h() - bh);

    fl_pop_clip();

    labelcolor(c);

    if (progress<h()) 
    {
      fl_push_clip(x(), y(), w(), h()-progress);

      draw_box(box(), x(), y(), w(), h(), active_r() ? color() : fl_inactive(color()));

      draw_label(tx, y() + by, tw, h() - bh);

      fl_pop_clip();
    }
  } 
  else 
  {
    draw_box(box(), x(), y(), w(), h(), active_r() ? color() : fl_inactive(color()));
    draw_label(tx, y() + by, tw, h() - bh);
  }
}