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//
// Fl_Pack or Fl_Flex test program for the Fast Light Tool Kit (FLTK).
//
// Rather crude test of the Fl_Pack or Fl_Flex class.
// Changing the type() of an Fl_Pack after it is displayed is not supported
// so I have to do a lot of resizing of things before that.
//
// Copyright 1998-2022 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 <FL/Fl.H>
#include <FL/Fl_Button.H>
#include <FL/Fl_Light_Button.H>
#include <FL/Fl_Double_Window.H>
#include <FL/Fl_Scroll.H>
#include <FL/Fl_Value_Slider.H>
#include <FL/Fl_Pack.H>
#include <FL/Fl_Flex.H>
// This test program can be modified by two #define's below to test Fl_Flex
// as a drop-in replacement of Fl_Pack. The committed code should always use
// the default settings documented below.
//
// Edit the following 2 #define's to modify the test scenario:
#define USE_FLEX 0 // default 0 = use Fl_Pack, 1 = use Fl_Flex
#define USE_SCROLL 1 // default 1 = put Fl_Pack or Fl_Flex inside Fl_Scroll
// Do not edit #define's below
#if USE_FLEX
#define CONTAINER Fl_Flex
#define USE_PACK 0
#else
#define CONTAINER Fl_Pack
#define USE_PACK 1
#endif
CONTAINER *pack; // either Fl_Pack or Fl_Flex
#if USE_SCROLL
Fl_Scroll *scroll;
#endif
void type_cb(Fl_Light_Button *, long v) {
for (int i = 0; i < pack->children(); i++) {
Fl_Widget *o = pack->child(i);
o->resize(0, 0, 25, 25);
}
pack->type(uchar(v));
#if USE_SCROLL
pack->resize(scroll->x(), scroll->y(), scroll->w(), scroll->h());
#endif
#if USE_FLEX
pack->layout();
#else
pack->parent()->redraw();
pack->redraw();
#endif
}
void spacing_cb(Fl_Value_Slider *o, long) {
int s = int(o->value());
pack->spacing(s);
#if USE_FLEX
if (s > 4)
pack->margin(4);
else
pack->margin(s);
pack->layout();
#else
pack->parent()->redraw();
#endif
}
int main(int argc, char **argv) {
Fl_Double_Window *w = new Fl_Double_Window(360, 370);
#if USE_SCROLL
scroll = new Fl_Scroll(10, 10, 340, 285);
#endif
int nbuttons = 24;
pack = new CONTAINER(10, 10, 340, 285);
#if (USE_FLEX)
pack->box(FL_DOWN_BOX);
nbuttons = 12;
#else
pack->box(FL_DOWN_FRAME);
#endif
// create buttons: position (xx, xx) will be "fixed" by Fl_Pack/Fl_Flex
int xx = 35;
for (int i = 0; i < nbuttons; i++) {
char ltxt[8];
snprintf(ltxt, 8, "b%d", i + 1);
Fl_Button *b = new Fl_Button(xx, xx, 25, 25);
b->copy_label(ltxt);
xx += 10;
}
pack->end();
w->resizable(pack);
#if USE_SCROLL
scroll->end();
#endif
{
Fl_Light_Button *o = new Fl_Light_Button(10, 305, 165, 25, "HORIZONTAL");
o->type(FL_RADIO_BUTTON);
o->callback((Fl_Callback *)type_cb, (void *)(CONTAINER::HORIZONTAL));
}
{
Fl_Light_Button *o = new Fl_Light_Button(185, 305, 165, 25, "VERTICAL");
o->type(FL_RADIO_BUTTON);
o->value(1);
o->callback((Fl_Callback *)type_cb, (void *)(CONTAINER::VERTICAL));
}
{
Fl_Value_Slider *o = new Fl_Value_Slider(100, 335, 250, 25, "Spacing: ");
o->align(FL_ALIGN_LEFT);
o->type(FL_HORIZONTAL);
o->range(0, 30);
o->step(1);
o->callback((Fl_Callback *)spacing_cb);
}
w->end();
w->size_range(300, 300);
w->show(argc, argv);
return Fl::run();
}
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