//// "$Id: navigation.cxx,v 1.1.1.1 2003/08/07 21:18:42 jasonk Exp $"//// 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 1998-1999 by Bill Spitzak and others.//// This library is free software; you can redistribute it and/or// modify it under the terms of the GNU Library General Public// License as published by the Free Software Foundation; either// version 2 of the License, or (at your option) any later version.//// This library is distributed in the hope that it will be useful,// but WITHOUT ANY WARRANTY; without even the implied warranty of// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU// Library General Public License for more details.//// You should have received a copy of the GNU Library General Public// License along with this library; if not, write to the Free Software// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307// USA.//// Please report all bugs and problems to "fltk-bugs@easysw.com".//#include <stdio.h>#include <stdlib.h>#include <FL/Fl.H>#include <FL/Fl_Window.H>#include <FL/Fl_Input.H>#define WIDTH 600#define HEIGHT 300#define GRID 25int main(int argc, char **argv) {  if (argc > 1) srand(atoi(argv[1]));  Fl_Window window(WIDTH,HEIGHT,argv[0]);  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();  return Fl::run();}//// End of "$Id: navigation.cxx,v 1.1.1.1 2003/08/07 21:18:42 jasonk Exp $".//