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program form_test_3;
{$MODE OBJFPC}
uses
ncurses, form, libc;
function st_middle(scrlen, itemlen: Smallint): Smallint; inline;
begin
st_middle := (scrlen - itemlen) div 2;
end;
procedure draw;
function randomchar: chtype;
var
ch: Char = #0;
begin
while not (ch in ['0'..'9','A'..'Z','a'..'z']) do
ch := Char(Random(123));
randomchar := chtype(ch);
end;
function randompair: longint;
var
pair: longint = 0;
begin
while not (pair in [1..5]) do
pair := Random(6);
randompair := pair;
end;
var
y, x: Smallint;
begin
for y := 0 to LINES - 1 do
for x := 0 to COLS - 1 do
mvaddch(y, x, randomchar OR COLOR_PAIR(randompair));
end;
const
enumval: array[0..2] of PChar = ('one', 'two', 'three');
desc: array[0..5] of PChar =
(
'TYPE_ALPHA Char data, a min width 8',
'TYPE_ENUM one, two, three',
'TYPE_INTEGER -300 .. 300',
'TYPE_NUMERIC -30.0 .. 30.0',
'TYPE_REGEXP ^http://.+\.(ru|net|com)\s*$',
'TYPE_IPV4 An IP Version 4 address.'
);
var
my_bg: NC_FPC_COLOR = COLOR_BLACK;
form_win: PWINDOW;
pair: Smallint;
field: array[0..6] of PFIELD;
my_form: PFORM;
i, frows, fcols, ch: Longint;
begin
try
setlocale(LC_ALL, '');
(* Initialize curses *)
initscr();
cbreak();
noecho();
keypad(stdscr, TRUE);
(* Initialize colors *)
if has_colors() then
begin
start_color();
if (use_default_colors() = OK) then
my_bg := -1
else
my_bg := COLOR_BLACK;
init_pair(1, COLOR_YELLOW, my_bg);
init_pair(2, COLOR_MAGENTA, my_bg);
init_pair(3, COLOR_WHITE, my_bg);
init_pair(4, COLOR_CYAN, my_bg);
init_pair(5, COLOR_GREEN, my_bg);
init_pair(6, COLOR_WHITE, COLOR_BLUE);
init_pair(7, COLOR_BLACK, COLOR_CYAN);
end;
for i := 0 to 5 do
begin
field[i] := new_field(1, 30, 2 + i * 3, 10, 0, 0);
field_opts_off(field[i], O_AUTOSKIP);
if i AND 1 = 0 then
pair := 7
else
pair := 6;
set_field_fore(field[i], COLOR_PAIR(pair));
set_field_back(field[i], A_UNDERLINE OR COLOR_PAIR(pair));
//set_field_pad(field[i],chtype(' '));
end;
draw;
refresh();
field[6] := nil;
set_field_type(field[0],TYPE_ALPHA,8);
set_field_type(field[1],TYPE_ENUM,PPChar(enumval),0,0);
set_field_type(field[2],TYPE_INTEGER,3,-300,300);
set_field_type(field[3],TYPE_NUMERIC,8,-30.0,30.0);
set_field_type(field[4],TYPE_REGEXP,'^http://.+\.(ru|net|com)\s*$');
set_field_type(field[5],TYPE_IPV4);
my_form := new_form(field);
(* Calculate the area required for the form *)
scale_form(my_form, @frows, @fcols);
(* Create the window to be associated with the form *)
//form_win := newwin(rows + 4, cols + 4, 4, 4);
form_win := newwin(frows + 4, fcols + 4, st_middle(LINES,frows+4), st_middle(COLS,fcols+4));
keypad(form_win, TRUE);
(* Set main window and sub window *)
set_form_win(my_form, form_win);
set_form_sub(my_form, derwin(form_win, frows, fcols, 2, 2));
(* Print a border around the main window and print a title *)
box(form_win, 0, 0);
//print_in_middle(my_form_win, 1, 0, cols + 4, "My Form", COLOR_PAIR(1));
post_form(my_form);
wrefresh(form_win);
for i := 0 to 5 do
mvwaddstr(form_win, 3 + i * 3, 1,desc[i]);
wrefresh(form_win);
//set_field_buffer(field[0], 0, 'Test Field');
//refresh();
(* Loop through to get user requests *)
ch := wgetch(form_win);
while (ch <> KEY_F(1)) AND (ch <> 27) do
begin
case ch of
9: { TAB }
begin
if form_driver(my_form, REQ_NEXT_WORD) <> E_OK then
begin
form_driver(my_form, REQ_VALIDATION);
form_driver(my_form, REQ_NEXT_FIELD);
form_driver(my_form, REQ_END_LINE);
end;
end;
KEY_NPAGE:
(* Go to next field *)
begin
form_driver(my_form, REQ_VALIDATION);
form_driver(my_form, REQ_NEXT_FIELD);
{ Go to the end of the present buffer
Leaves nicely at the last character }
form_driver(my_form, REQ_END_LINE);
end;
KEY_PPAGE:
(* Go to previous field *)
begin
form_driver(my_form, REQ_VALIDATION);
form_driver(my_form, REQ_PREV_FIELD);
form_driver(my_form, REQ_END_LINE);
end;
KEY_DOWN:
if form_driver(my_form, REQ_DOWN_CHAR) <> E_OK then
begin
form_driver(my_form, REQ_VALIDATION);
form_driver(my_form, REQ_DOWN_FIELD);
end;
KEY_UP:
if form_driver(my_form, REQ_UP_CHAR) <> E_OK then
begin
form_driver(my_form, REQ_VALIDATION);
form_driver(my_form, REQ_UP_FIELD);
end;
KEY_LEFT:
if form_driver(my_form, REQ_LEFT_CHAR) <> E_OK then
begin
form_driver(my_form, REQ_VALIDATION);
form_driver(my_form, REQ_LEFT_FIELD);
form_driver(my_form, REQ_END_LINE);
end;
KEY_RIGHT:
if form_driver(my_form, REQ_RIGHT_CHAR) <> E_OK then
begin
form_driver(my_form, REQ_VALIDATION);
form_driver(my_form, REQ_RIGHT_FIELD);
end;
KEY_BACKSPACE: form_driver(my_form, REQ_DEL_PREV);
10: { ENTER }
begin
form_driver(my_form, 10);
if form_driver(my_form, REQ_NEXT_LINE) <> E_OK then
begin
form_driver(my_form, REQ_VALIDATION);
form_driver(my_form, REQ_NEXT_FIELD);
form_driver(my_form, REQ_END_LINE);
end;
end;
else
{ If this is a normal character, it gets
Printed }
form_driver(my_form, ch);
end;
ch := wgetch(form_win);
end;
finally
unpost_form(my_form);
free_form(my_form);
delwin(form_win);
endwin();
for i := 0 to 5 do
begin
if field_status(field[i]) then
begin
writeln;
writeln('Value ', i,':');
writeln(field_buffer(field[i], 0));
end;
free_field(field[i]);
end
end;
end.
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