a5b9cc888b
This new feature demonstrates that Fl_Flex can be used (almost) as a drop-in replacement of Fl_Pack. Add missing file to examples/.gitignore.
143 lines
3.4 KiB
C++
143 lines
3.4 KiB
C++
//
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// Fl_Pack or Fl_Flex test program for the Fast Light Tool Kit (FLTK).
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//
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// Rather crude test of the Fl_Pack or Fl_Flex class.
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// Changing the type() of an Fl_Pack after it is displayed is not supported
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// so I have to do a lot of resizing of things before that.
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//
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// Copyright 1998-2022 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 <FL/Fl.H>
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#include <FL/Fl_Button.H>
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#include <FL/Fl_Light_Button.H>
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#include <FL/Fl_Double_Window.H>
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#include <FL/Fl_Scroll.H>
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#include <FL/Fl_Value_Slider.H>
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#include <FL/Fl_Pack.H>
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#include <FL/Fl_Flex.H>
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// This test program can be modified by two #define's below to test Fl_Flex
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// as a drop-in replacement of Fl_Pack. The committed code should always use
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// the default settings documented below.
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//
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// Edit the following 2 #define's to modify the test scenario:
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#define USE_FLEX 0 // default 0 = use Fl_Pack, 1 = use Fl_Flex
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#define USE_SCROLL 1 // default 1 = put Fl_Pack or Fl_Flex inside Fl_Scroll
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// Do not edit #define's below
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#if USE_FLEX
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#define CONTAINER Fl_Flex
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#define USE_PACK 0
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#else
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#define CONTAINER Fl_Pack
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#define USE_PACK 1
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#endif
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CONTAINER *pack; // either Fl_Pack or Fl_Flex
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#if USE_SCROLL
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Fl_Scroll *scroll;
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#endif
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void type_cb(Fl_Light_Button *, long v) {
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for (int i = 0; i < pack->children(); i++) {
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Fl_Widget *o = pack->child(i);
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o->resize(0, 0, 25, 25);
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}
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pack->type(uchar(v));
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#if USE_SCROLL
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pack->resize(scroll->x(), scroll->y(), scroll->w(), scroll->h());
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#endif
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#if USE_FLEX
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pack->layout();
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#else
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pack->parent()->redraw();
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pack->redraw();
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#endif
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}
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void spacing_cb(Fl_Value_Slider *o, long) {
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int s = int(o->value());
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pack->spacing(s);
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#if USE_FLEX
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if (s > 4)
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pack->margin(4);
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else
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pack->margin(s);
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pack->layout();
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#else
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pack->parent()->redraw();
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#endif
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}
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int main(int argc, char **argv) {
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Fl_Double_Window *w = new Fl_Double_Window(360, 370);
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#if USE_SCROLL
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scroll = new Fl_Scroll(10, 10, 340, 285);
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#endif
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int nbuttons = 24;
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pack = new CONTAINER(10, 10, 340, 285);
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#if (USE_FLEX)
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pack->box(FL_DOWN_BOX);
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nbuttons = 12;
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#else
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pack->box(FL_DOWN_FRAME);
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#endif
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// create buttons: position (xx, xx) will be "fixed" by Fl_Pack/Fl_Flex
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int xx = 35;
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for (int i = 0; i < nbuttons; i++) {
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char ltxt[8];
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sprintf(ltxt, "b%d", i + 1);
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Fl_Button *b = new Fl_Button(xx, xx, 25, 25);
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b->copy_label(ltxt);
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xx += 10;
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}
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pack->end();
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w->resizable(pack);
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#if USE_SCROLL
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scroll->end();
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#endif
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{
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Fl_Light_Button *o = new Fl_Light_Button(10, 305, 165, 25, "HORIZONTAL");
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o->type(FL_RADIO_BUTTON);
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o->callback((Fl_Callback *)type_cb, (void *)(CONTAINER::HORIZONTAL));
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}
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{
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Fl_Light_Button *o = new Fl_Light_Button(185, 305, 165, 25, "VERTICAL");
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o->type(FL_RADIO_BUTTON);
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o->value(1);
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o->callback((Fl_Callback *)type_cb, (void *)(CONTAINER::VERTICAL));
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}
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{
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Fl_Value_Slider *o = new Fl_Value_Slider(100, 335, 250, 25, "Spacing: ");
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o->align(FL_ALIGN_LEFT);
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o->type(FL_HORIZONTAL);
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o->range(0, 30);
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o->step(1);
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o->callback((Fl_Callback *)spacing_cb);
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}
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w->end();
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w->size_range(300, 300);
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w->show(argc, argv);
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return Fl::run();
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}
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