//

// "$Id: navigation.cxx 8864 2011-07-19 04:49:30Z greg.ercolano $"

//

// Navigation test program for the Fast Light Tool Kit (FLTK).

//

// Silly test of navigation keys. This is not a recommended method of

// laying out your panels!

//

// Copyright 1998-2010 by Bill Spitzak and others.

//

// This library is free software. Distribution and use rights are outlined in

// the file "COPYING" which should have been included with this file.  If this

// file is missing or damaged, see the license at:

//

//     http://www.fltk.org/COPYING.php

//

// Please report all bugs and problems on the following page:

//

//     http://www.fltk.org/str.php

//

#include <stdio.h>

#include <stdlib.h>

#include <FL/Fl.H>

#include <FL/Fl_Window.H>

#include <FL/Fl_Input.H>

#include <FL/Fl_Light_Button.H>

#define WIDTH 600

#define HEIGHT 300

#define GRID 25

void ToggleArrowFocus_CB(Fl_Widget *w, void*) {

  Fl_Light_Button *b = (Fl_Light_Button*)w;

  Fl::option(Fl::OPTION_ARROW_FOCUS, b->value() ? true : false);

}

int main(int argc, char **argv) {

  if (argc > 1) srand(atoi(argv[1]));

  Fl_Window window(WIDTH,HEIGHT+40,argv[0]);

    // Include a toggle button to control arrow focus

    Fl_Light_Button arrowfocus_butt(10,HEIGHT+10,130,20," Arrow Focus");

    arrowfocus_butt.callback(ToggleArrowFocus_CB);

    arrowfocus_butt.value(Fl::option(Fl::OPTION_ARROW_FOCUS) ? 1 : 0);	// use default

    arrowfocus_butt.tooltip("Control horizontal arrow key focus navigation behavior.\n"

                            "e.g. Fl::OPTION_ARROW_FOCUS");

  window.end(); // don't auto-add children

  for (int i = 0; i<10000; i++) {

    // make up a random size of widget:

    int x = rand()%(WIDTH/GRID+1) * GRID;

    int y = rand()%(HEIGHT/GRID+1) * GRID;

    int w = rand()%(WIDTH/GRID+1) * GRID;

    if (w < x) {w = x-w; x-=w;} else {w = w-x;}

    int h = rand()%(HEIGHT/GRID+1) * GRID;

    if (h < y) {h = y-h; y-=h;} else {h = h-y;}

    if (w < GRID || h < GRID || w < h) continue;

    // find where to insert it and see if it intersects something:

    Fl_Widget *j = 0;

    int n; for (n=0; n < window.children(); n++) {

      Fl_Widget *o = window.child(n);

      if (x<o->x()+o->w() && x+w>o->x() &&

	  y<o->y()+o->h() && y+h>o->y()) break;

      if ( !j && ( y<o->y() || (y==o->y() && x<o->x()) ) ) j = o;

    }

    // skip if intersection:

    if (n < window.children()) continue;

    window.insert(*(new Fl_Input(x,y,w,h)),j);

  }

  window.show(argc, argv);

  return Fl::run();

}

//

// End of "$Id: navigation.cxx 8864 2011-07-19 04:49:30Z greg.ercolano $".

//