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//
// Demonstrate using the Fl_Progress widget in an application - erco 05/02/2005
//
// Copyright 2005,2012 Greg Ercolano.
// Copyright 1998-2017 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 <FL/Fl.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_Button.H>
#include <FL/Fl_Progress.H>
#ifdef _WIN32
// WINDOWS
#include <windows.h>
#define usleep(v) Sleep(v/1000)
#else /* _WIN32 */
// UNIX
#include <unistd.h> // usleep
#endif /* _WIN32 */
// Button callback
void butt_cb(Fl_Widget *butt, void *data) {
// Deactivate the button
butt->deactivate(); // prevent button from being pressed again
Fl::check(); // give fltk some cpu to gray out button
// Make the progress bar
Fl_Window *w = (Fl_Window*)data; // access parent window
w->begin(); // add progress bar to it..
Fl_Progress *progress = new Fl_Progress(10,50,200,30);
progress->minimum(0); // set progress range to be 0.0 ~ 1.0
progress->maximum(1);
progress->color(0x88888800); // background color
progress->selection_color(0x4444ff00); // progress bar color
progress->labelcolor(FL_WHITE); // percent text color
w->end(); // end adding to window
// Computation loop..
for ( int t=1; t<=500; t++ ) {
progress->value(t/500.0); // update progress bar with 0.0 ~ 1.0 value
char percent[10];
sprintf(percent, "%d%%", int((t/500.0)*100.0));
progress->label(percent); // update progress bar's label
Fl::check(); // give fltk some cpu to update the screen
usleep(1000); // 'your stuff' that's compute intensive
}
// Cleanup
w->remove(progress); // remove progress bar from window
delete(progress); // deallocate it
butt->activate(); // reactivate button
w->redraw(); // tell window to redraw now that progress removed
}
// Main
int main() {
Fl_Window win(220,90);
Fl_Button butt(10,10,100,25,"Press");
butt.callback(butt_cb, &win);
win.resizable(win);
win.show();
return(Fl::run());
}
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