mirror of https://github.com/fltk/fltk
73 lines
2.7 KiB
C++
73 lines
2.7 KiB
C++
//
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// Demonstrate using the Fl_Progress widget in an application - erco 05/02/2005
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//
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// Copyright 2005,2012 Greg Ercolano.
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// Copyright 1998-2017 by Bill Spitzak and others.
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//
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// This library is free software. Distribution and use rights are outlined in
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// the file "COPYING" which should have been included with this file. If this
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// file is missing or damaged, see the license at:
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//
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// https://www.fltk.org/COPYING.php
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//
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// Please see the following page on how to report bugs and issues:
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//
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// https://www.fltk.org/bugs.php
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//
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#include <stdio.h>
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#include <FL/Fl.H>
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#include <FL/Fl_Window.H>
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#include <FL/Fl_Button.H>
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#include <FL/Fl_Progress.H>
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#ifdef _WIN32
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// WINDOWS
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#include <windows.h>
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#define usleep(v) Sleep(v/1000)
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#else /* _WIN32 */
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// UNIX
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#include <unistd.h> // usleep
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#endif /* _WIN32 */
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// Button callback
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void butt_cb(Fl_Widget *butt, void *data) {
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// Deactivate the button
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butt->deactivate(); // prevent button from being pressed again
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Fl::check(); // give fltk some cpu to gray out button
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// Make the progress bar
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Fl_Window *w = (Fl_Window*)data; // access parent window
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w->begin(); // add progress bar to it..
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Fl_Progress *progress = new Fl_Progress(10,50,200,30);
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progress->minimum(0); // set progress range to be 0.0 ~ 1.0
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progress->maximum(1);
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progress->color(0x88888800); // background color
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progress->selection_color(0x4444ff00); // progress bar color
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progress->labelcolor(FL_WHITE); // percent text color
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w->end(); // end adding to window
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// Computation loop..
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for ( int t=1; t<=500; t++ ) {
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progress->value(float(t/500.0)); // update progress bar with 0.0 ~ 1.0 value
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char percent[10];
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sprintf(percent, "%d%%", int((t/500.0)*100.0));
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progress->label(percent); // update progress bar's label
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Fl::check(); // give fltk some cpu to update the screen
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usleep(1000); // 'your stuff' that's compute intensive
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}
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// Cleanup
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w->remove(progress); // remove progress bar from window
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delete(progress); // deallocate it
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butt->activate(); // reactivate button
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w->redraw(); // tell window to redraw now that progress removed
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}
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// Main
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int main() {
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Fl_Window win(220,90);
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Fl_Button butt(10,10,100,25,"Press");
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butt.callback(butt_cb, &win);
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win.resizable(win);
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win.show();
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return(Fl::run());
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}
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