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//
// Library version test program for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2024 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
//
// This program is work in progress and may not be "perfect".
#include <FL/Fl.H>
#include <FL/platform.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_Grid.H>
#include <FL/Fl_Box.H>
#include <FL/fl_ask.H>
#include <stdio.h>
static const int ww = 640, mw = 750; // initial, max. window width
static const int wh = 200, mh = 300; // initial, max. window height
// Function to determine the platform (system and backend).
// Note: the display must have been opened before this is called.
// Returns a string describing the system/platform and backend.
static const char *get_platform() {
#if defined(_WIN32)
return "Windows";
#elif defined(FLTK_USE_X11) || defined(FLTK_USE_WAYLAND)
# if defined(FLTK_USE_X11)
if (fl_x11_display())
return "Unix/Linux (X11)";
# endif
# if defined(FLTK_USE_WAYLAND)
if (fl_wl_display())
return "Unix/Linux (Wayland)";
# endif
return "X11 or Wayland (backend unknown or display not opened)";
#elif defined(__APPLE__)
return "macOS (native)";
#endif
return "platform unknown, unsupported, or display not opened";
}
// set box attributes and optionally set a background color (debug mode)
static void set_attributes(Fl_Widget *w, Fl_Color col) {
w->labelfont(FL_COURIER);
w->labelsize(16);
w->align(FL_ALIGN_CENTER | FL_ALIGN_INSIDE);
#if (0) // 1 = debug: set a background color for a box (widget)
w->box(FL_FLAT_BOX);
w->color(col);
#endif
}
static char version[9][80];
static Fl_Box *box[9];
// Optional: uncomment next line to disable wayland backend
// FL_EXPORT bool fl_disable_wayland = true;
int main(int argc, char **argv) {
int versions = 0;
fl_open_display();
const char *platform = get_platform();
printf("System/platform = %s\n", platform);
// Version comparison results (Unicode check marks in comments are experimental)
const char *YES = "OK"; // "🗹"; // "✓";
const char *NO = "FAIL"; // "🗷"; // "❌";
sprintf(version[versions++], "FL_VERSION = %6.4f", FL_VERSION);
sprintf(version[versions++], "Fl::version() = %6.4f", Fl::version());
sprintf(version[versions++], "%s", (FL_VERSION == Fl::version()) ? YES : NO);
sprintf(version[versions++], "FL_API_VERSION = %6d", FL_API_VERSION);
sprintf(version[versions++], "Fl::api_version() = %6d", Fl::api_version());
sprintf(version[versions++], "%s", (FL_API_VERSION == Fl::api_version()) ? YES : NO);
sprintf(version[versions++], "FL_ABI_VERSION = %6d", FL_ABI_VERSION);
sprintf(version[versions++], "Fl::abi_version() = %6d", Fl::abi_version());
sprintf(version[versions++], "%s", (FL_ABI_VERSION == Fl::abi_version()) ? YES : NO);
for (int i = 0; i < versions; i++) {
if (i % 3 == 1) // 2nd line followed by check mark or text
printf("%s ", version[i]);
else // 1st and 3rd line
printf("%s\n", version[i]);
}
fflush(stdout);
#ifdef FL_ABI_VERSION
if (FL_ABI_VERSION != Fl::abi_version()) {
printf("*** FLTK ABI version mismatch: headers = %d, lib = %d ***\n",
FL_ABI_VERSION, Fl::abi_version());
fflush(stdout);
fl_message("*** FLTK ABI version mismatch: headers = %d, lib = %d ***",
FL_ABI_VERSION, Fl::abi_version());
}
#endif
Fl_Window *window = new Fl_Window(ww, wh);
Fl_Grid *grid = new Fl_Grid(0, 0, ww, wh);
grid->layout(4, 3, 20, 5);
Fl_Box *title = new Fl_Box(0, 0, 0, 0, platform);
set_attributes(title, FL_YELLOW);
title->labelfont(FL_HELVETICA_BOLD);
grid->widget(title, 0, 0, 1, 3);
grid->row_height(0, 40);
title->labelsize(20);
for (int i = 0; i < 3; i += 1) {
box[3 * i ] = new Fl_Box(0, 0, 270, 0, version[3 * i]);
box[3 * i + 1] = new Fl_Box(0, 0, 270, 0, version[3 * i + 1]);
box[3 * i + 2] = new Fl_Box(0, 0, 40, 0, version[3 * i + 2]);
grid->widget(box[3 * i], i + 1, 0);
grid->widget(box[3 * i + 1], i + 1, 1);
grid->widget(box[3 * i + 2], i + 1, 2);
grid->row_height(i + 1, 30);
}
for (int i = 0; i < 9; i++)
set_attributes(box[i], FL_GREEN);
window->end();
window->resizable(grid);
window->size_range(ww, wh, mw, mh);
window->show(argc, argv);
return Fl::run();
}
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