880fc26857
Warning was: "implicit conversion from 'int' to 'float' changes value from 2147483647 to 2147483648" Not a big deal in this context, but anyway.
76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
//
|
|
// Simple Fl_Tree custom (numeric) sort example. - erco 12/16/2013
|
|
// Demonstrates custom sorting of Fl_Tree items.
|
|
//
|
|
// Copyright 2013 Greg Ercolano.
|
|
// 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:
|
|
//
|
|
// https://www.fltk.org/COPYING.php
|
|
//
|
|
// Please see the following page on how to report bugs and issues:
|
|
//
|
|
// https://www.fltk.org/bugs.php
|
|
//
|
|
#include <stdio.h>
|
|
#include <stdlib.h> /* qsort(3), srand(3).. */
|
|
#include <time.h> /* time(2) */
|
|
#include <FL/Fl.H>
|
|
#include <FL/Fl_Double_Window.H>
|
|
#include <FL/Fl_Tree.H>
|
|
#include <FL/Fl_Button.H>
|
|
|
|
Fl_Tree *G_tree = 0;
|
|
|
|
// Resort the tree
|
|
void MySortCallback(Fl_Widget*, void *data) {
|
|
int dir = int(fl_intptr_t(data)); // forward or reverse
|
|
Fl_Tree_Item *i = G_tree->root();
|
|
// Bubble sort
|
|
for ( int ax=0; ax<i->children(); ax++ ) {
|
|
for ( int bx=ax+1; bx<i->children(); bx++ ) {
|
|
long a; sscanf(i->child(ax)->label(), "%ld", &a);
|
|
long b; sscanf(i->child(bx)->label(), "%ld", &b);
|
|
switch ( dir ) {
|
|
case 1: if ( a > b ) { i->swap_children(ax, bx); } break; // fwd
|
|
case -1: if ( a < b ) { i->swap_children(ax, bx); } break; // rev
|
|
}
|
|
}
|
|
}
|
|
G_tree->redraw();
|
|
}
|
|
|
|
int main(int argc, char *argv[]) {
|
|
// Randomize the random number generator
|
|
time_t tval; time(&tval);
|
|
srand((unsigned)tval);
|
|
|
|
// Create window with tree
|
|
Fl::scheme("gtk+");
|
|
Fl_Double_Window *win = new Fl_Double_Window(250, 600, "Numeric Sort Tree");
|
|
win->begin();
|
|
{
|
|
G_tree = new Fl_Tree(10, 10, win->w()-20, win->h()-60);
|
|
G_tree->showroot(0);
|
|
|
|
// Add 200 random numbers to the tree
|
|
char word[50];
|
|
for ( int t=0; t<200; t++ ) {
|
|
sprintf(word, "%ld", long((double(rand()) / double(RAND_MAX)) * 1000000));
|
|
G_tree->add(word);
|
|
}
|
|
|
|
// Add some sort buttons
|
|
Fl_Button *but;
|
|
but = new Fl_Button(10, win->h()-40,80,20,"Fwd"); but->callback(MySortCallback, (void*) 1);
|
|
but = new Fl_Button(20+80,win->h()-40,80,20,"Rev"); but->callback(MySortCallback, (void*)-1);
|
|
}
|
|
win->end();
|
|
win->resizable(win);
|
|
win->show(argc, argv);
|
|
return(Fl::run());
|
|
}
|