1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
//
// Fl_Grid demo program for the Fast Light Tool Kit (FLTK).
//
// Copyright 2021 by Albrecht Schlosser
// Copyright 2022-2023 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_Double_Window.H>
#include <FL/Fl_Grid.H>
#include <FL/Fl_Button.H>
#include <FL/Fl_Input.H>
#include <FL/Fl_Box.H>
int main(int argc, char **argv) {
Fl_Double_Window *win = new Fl_Double_Window(480, 200, "Fl_Grid \"Login\" Layout");
// Fl_Grid of 6 x 6 cells, margin 2 and gap 2
Fl_Grid *grid = new Fl_Grid(5, 5, 470, 190);
grid->layout(6, 6, 2, 2); // 6 rows, 6 columns, margin 2, gap 2
// image (150x200) in left column
Fl_Box *ibox = new Fl_Box(0, 0, 150, 200, "Image");
ibox->box(FL_BORDER_BOX);
ibox->color(fl_rgb_color(0, 200, 0));
grid->widget(ibox, 1, 1, 4, 1, FL_GRID_CENTER);
// the title spans 2 columns (3 - 4)
Fl_Box *title = new Fl_Box(0, 0, 200, 60);
title->label("Welcome to Fl_Grid");
title->align(FL_ALIGN_CENTER);
title->labelfont(FL_BOLD + FL_ITALIC);
title->labelsize(16);
grid->widget(title, 1, 3, 1, 2, FL_GRID_HORIZONTAL | FL_GRID_CENTER);
grid->col_width(2, 90); // placeholder for labels
// input widgets with fixed height and horizontal stretching
Fl_Input *i1 = new Fl_Input(0, 0, 150, 30, "Username:");
grid->widget(i1, 2, 3, 1, 2, FL_GRID_HORIZONTAL);
grid->row_gap(2, 10); // gap below username
Fl_Input *i2 = new Fl_Input(0, 0, 150, 30, "Password:");
grid->widget(i2, 3, 3, 1, 2, FL_GRID_HORIZONTAL);
grid->row_gap(3, 10); // gap below password
// register and login buttons
Fl_Button *btr = new Fl_Button(0, 0, 80, 30, "Register");
grid->widget(btr, 4, 3, 1, 1, FL_GRID_HORIZONTAL);
grid->col_gap(3, 20); // gap right of the register button
Fl_Button *btl = new Fl_Button(0, 0, 80, 30, "Login");
grid->widget(btl, 4, 4, 1, 1, FL_GRID_HORIZONTAL);
// set column and row weights for resizing behavior (optional)
int cw[] = { 20, 0, 0, 10, 10, 20}; // column weights
int rw[] = { 10, 0, 0, 0, 0, 10}; // row weights
grid->col_weight(cw, 6);
grid->row_weight(rw, 6);
grid->end();
grid->layout();
// grid->debug(1);
// grid->show_grid(1); // enable to display grid helper lines
win->end();
grid->color(fl_rgb_color(250, 250, 250));
win->color(fl_rgb_color(250, 250, 250));
win->resizable(grid);
win->resize(0, 0, 600, 300); // same size as flex_login
win->size_range(550, 250);
win->show(argc, argv);
int ret = Fl::run();
delete win; // not necessary but useful to test for memory leaks
return ret;
}
|
