ref: 54bac038f411c10a596adf84c06df32f8c7c4c53
dir: /appl/examples/minitel/swkeyb.b/
###
### This data and information is not to be used as the basis of manufacture,
### or be reproduced or copied, or be distributed to another party, in whole
### or in part, without the prior written consent of Lucent Technologies.
###
### (C) Copyright 1997 Lucent Technologies
###
### Written by N. W. Knauft
###
#
# Revisions Copyright © 1998 Vita Nuova Limited.
implement Keyboard;
include "sys.m";
sys: Sys;
include "draw.m";
draw: Draw;
include "tk.m";
tk: Tk;
include "tkclient.m";
tkclient: Tkclient;
include "swkeyb.m";
#Icon path
ICPATH: con "keybd/";
#Font
FONT: con "/fonts/lucidasans/latin1.7.font";
SPECFONT: con "/fonts/lucidasans/latin1.6.font";
# Dimension constants
KBDWIDTH: con 360;
KBDHEIGHT: con 120;
KEYSIZE: con "19";
KEYSPACE: con 5;
KEYBORDER: con 1;
KEYGAP: con KEYSPACE - (2 * KEYBORDER);
ENDGAP: con 2 - KEYBORDER;
# Row size constants (cumulative)
ROW1: con 14;
ROW2: con 28;
ROW3: con 41;
ROW4: con 53;
NKEYS: con 63;
#Special key number constants
DELKEY: con 13;
TABKEY: con 14;
BACKSLASHKEY: con 27;
CAPSLOCKKEY: con 28 ;
RETURNKEY: con 40;
LSHIFTKEY: con 41;
RSHIFTKEY: con 52;
ESCKEY: con 53;
CTRLKEY: con 54;
METAKEY: con 55;
ALTKEY: con 56;
SPACEKEY: con 57;
ENTERKEY: con 58;
LEFTKEY: con 59;
RIGHTKEY: con 60;
DOWNKEY: con 61;
UPKEY: con 62;
#Special key code constants
CAPSLOCK: con -1 ;
SHIFT: con -2;
CTRL: con -3;
ALT: con -4;
META: con -5;
MAGIC_PREFIX: con 256;
ARROW_OFFSET: con 57344;
ARROW_PREFIX: con ARROW_OFFSET + 18;
#Special key width constants
DELSIZE: con 44;
TABSIZE: con 32;
BACKSLASHSIZE: con 31;
CAPSLOCKSIZE: con 44;
RETURNSIZE: con 43;
LSHIFTSIZE: con 56;
RSHIFTSIZE: con 55;
ESCSIZE: con 21;
CTRLSIZE: con 23;
METASIZE: con 38;
ALTSIZE: con 22;
SPACESIZE: con 100;
ENTERSIZE: con 31;
#Arrow key code constants
UP: con ARROW_PREFIX;
DOWN: con ARROW_PREFIX + 1;
LEFT: con ARROW_PREFIX + 2;
RIGHT: con ARROW_PREFIX + 3;
direction:= array[] of {"up", "down", "left", "right"};
row_dimensions:= array[] of {0, ROW1, ROW2, ROW3, ROW4, NKEYS};
special_keys:= array[] of {
(DELKEY, DELSIZE),
(TABKEY, TABSIZE),
(BACKSLASHKEY, BACKSLASHSIZE),
(CAPSLOCKKEY, CAPSLOCKSIZE),
(RETURNKEY, RETURNSIZE),
(LSHIFTKEY, LSHIFTSIZE),
(RSHIFTKEY, RSHIFTSIZE),
(ESCKEY, ESCSIZE),
(CTRLKEY, CTRLSIZE),
(METAKEY, METASIZE),
(ALTKEY, ALTSIZE),
(SPACEKEY, SPACESIZE),
(ENTERKEY, ENTERSIZE),
};
keys:= array[] of {
# Unshifted
"`", "1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "-", "=", "Delete",
"Tab", "q", "w", "e", "r", "t", "y", "u", "i", "o", "p", "[", "]", "\\\\",
"CapLoc", "a", "s", "d", "f", "g", "h", "j", "k", "l", ";", "\'", "Return",
"Shift", "z", "x", "c", "v", "b", "n", "m", ",", ".", "/", "Shift",
"Esc", "Ctrl", " ", "Alt", " ", "Enter", "<-", "->", "v", "^",
# Shifted
"~", "!", "@", "#", "$", "%", "^", "&", "*", "(", ")", "_", "+", "Delete",
"Tab", "Q", "W", "E", "R", "T", "Y", "U", "I", "O", "P", "\\{", "\\}", "|",
"CapLoc", "A", "S", "D", "F", "G", "H", "J", "K", "L", ":", "\"", "Return",
"Shift", "Z", "X", "C", "V", "B", "N", "M", "<", ">", "?", "Shift",
"Esc", "Ctrl", " ", "Alt", " ", "Enter", "<-", "->", "v", "^",
};
keyvals:= array[] of {
# Unshifted
'`', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', '\b',
'\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\\',
CAPSLOCK, 'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'', '\n',
SHIFT, 'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/', SHIFT,
27, CTRL, META, ALT, 32, '\n', LEFT, RIGHT, DOWN, UP,
# Shifted
'~', '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+', '\b',
'\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '|',
CAPSLOCK, 'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"', '\n',
SHIFT, 'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?', SHIFT,
27, CTRL, META, ALT, 32, '\n', LEFT, RIGHT, DOWN, UP,
};
rowlayout := array[] of {
"frame .f1",
"frame .f2",
"frame .f3",
"frame .f4",
"frame .f5",
"frame .dummy0 -height " + string (ENDGAP),
"frame .dummy1 -height " + string KEYGAP,
"frame .dummy2 -height " + string KEYGAP,
"frame .dummy3 -height " + string KEYGAP,
"frame .dummy4 -height " + string KEYGAP,
"frame .dummy5 -height " + string (ENDGAP + 1),
};
# Move key flags
move_key_enabled := 0;
meta_active := 0;
# Create keyboard widget, spawn keystroke handler
initialize(t: ref Tk->Toplevel, ctxt : ref Draw->Context, dot: string): chan of string
{
return chaninit(t, ctxt, dot, chan of string);
}
chaninit(t: ref Tk->Toplevel, ctxt : ref Draw->Context, dot: string, rc: chan of string): chan of string
{
sys = load Sys Sys->PATH;
draw = load Draw Draw->PATH;
tk = load Tk Tk->PATH;
tkclient = load Tkclient Tkclient->PATH;
tkclient->init();
tk->cmd(t, "frame " + dot + " -bd 2 -relief raised -width " + string KBDWIDTH
+ " -height " + string KBDHEIGHT);
tkcmds(t, rowlayout);
for(i := 0; i < NKEYS; i++) {
tk->cmd(t, "button .b" + string i + " -font " + FONT + " -width " + KEYSIZE
+ " -height " + KEYSIZE + " -bd " + string KEYBORDER);
tk->cmd(t, ".b" + string i + " configure -text {" + keys[i] +
"} -command 'send keypress " + string keyvals[i]);
}
for(i = 0; i < len special_keys; i++) {
(keynum, keysize) := special_keys[i];
tk->cmd(t, ".b" + string keynum + " configure -font " + SPECFONT + " -width " + string keysize);
}
tk->cmd(t, "image create bitmap Capslock_on -file " + ICPATH + "capson.bit -maskfile " + ICPATH + "capson.bit");
tk->cmd(t, "image create bitmap Capslock_off -file " + ICPATH + "capsoff.bit -maskfile " + ICPATH + "capsoff.bit");
tk->cmd(t, "image create bitmap Left_arrow -file " + ICPATH + "larrow.bit -maskfile " + ICPATH + "larrow.bit");
tk->cmd(t, "image create bitmap Right_arrow -file " + ICPATH + "rarrow.bit -maskfile " + ICPATH + "rarrow.bit");
tk->cmd(t, "image create bitmap Down_arrow -file " + ICPATH + "darrow.bit -maskfile " + ICPATH + "darrow.bit");
tk->cmd(t, "image create bitmap Up_arrow -file " + ICPATH + "uarrow.bit -maskfile " + ICPATH + "uarrow.bit");
tk->cmd(t, "image create bitmap Move_on -file " + ICPATH + "moveon.bit -maskfile " + ICPATH + "moveon.bit");
tk->cmd(t, "image create bitmap Move_off -file " + ICPATH + "moveoff.bit -maskfile " + ICPATH + "moveoff.bit");
tk->cmd(t, "image create bitmap None -file " + ICPATH + "none.bit -maskfile " + ICPATH + "none.bit");
tk->cmd(t, ".b" + string CAPSLOCKKEY + " configure -image Capslock_off");
tk->cmd(t, ".b" + string LEFTKEY + " configure -image Left_arrow");
tk->cmd(t, ".b" + string RIGHTKEY + " configure -image Right_arrow");
tk->cmd(t, ".b" + string DOWNKEY + " configure -image Down_arrow");
tk->cmd(t, ".b" + string UPKEY + " configure -image Up_arrow");
for(j:=1; j < len row_dimensions; j++) {
rowstart := row_dimensions[j-1];
rowend := row_dimensions[j];
for(i=rowstart; i<rowend; i++) {
if (i == rowstart) {
tk->cmd(t, "frame .f" + string j + ".dummy -width " + string ENDGAP);
tk->cmd(t, "pack .f" + string j + ".dummy -side left");
}
tk->cmd(t, "pack .b" + string i + " -in .f" + string j + " -side left");
if (i == rowend-1)
tk->cmd(t, "frame .f" + string j + ".dummy" + string i + " -width " + string ENDGAP);
else
tk->cmd(t, "frame .f" + string j + ".dummy" + string i + " -width " + string KEYGAP);
tk->cmd(t, "pack .f" + string j + ".dummy" + string i + " -side left");
}
}
tk->cmd(t, "pack .dummy0 .f1 .dummy1 .f2 .dummy2 .f3 .dummy3 .f4 .dummy4 .f5 .dummy5 -in " + dot);
tk->cmd(t,"update");
key := chan of string;
spawn handle_keyclicks(t, ctxt, key, rc);
return key;
}
tkcmds(t: ref Tk->Toplevel, cmds: array of string)
{
for(i := 0; i < len cmds; i++)
tk->cmd(t, cmds[i]);
}
# Process key clicks and hand keycodes off to Tk
handle_keyclicks(t: ref Tk->Toplevel, ctxt : ref Draw->Context, sc, rc: chan of string)
{
keypress := chan of string;
tk->namechan(t, keypress, "keypress");
minitel := 0;
caps_locked := 0;
shifted := 0;
ctrl_active := 0;
alt_active := 0;
Work:
for(;;){
alt {
k := <-keypress =>
(n, cmdstr) := sys->tokenize(k, " \t\n");
keycode := int hd cmdstr;
case keycode {
CAPSLOCK =>
redisplay_keyboard(t, minitel, caps_locked ^= 1, caps_locked);
shifted = 0;
ctrl_active = 0;
alt_active = 0;
SHIFT =>
redisplay_keyboard(t, minitel, (shifted ^= 1) ^ caps_locked, caps_locked);
CTRL =>
ctrl_active ^= 1;
if (shifted) {
redisplay_keyboard(t, minitel, caps_locked, caps_locked);
shifted = 0;
}
alt_active = 0;
ALT =>
alt_active ^= 1;
if (shifted) {
redisplay_keyboard(t, minitel, caps_locked, caps_locked);
shifted = 0;
}
ctrl_active = 0;
META =>
if (move_key_enabled) {
if (meta_active ^= 1)
tk->cmd(t, ".b" + string METAKEY + " configure -image Move_on");
else
tk->cmd(t, ".b" + string METAKEY + " configure -image Move_off");
}
redisplay_keyboard(t, minitel, caps_locked, caps_locked);
shifted = 0;
ctrl_active = 0;
alt_active = 0;
* =>
if (ctrl_active) {
keycode &= 16r1F;
ctrl_active = 0;
} else if (alt_active) {
keycode += MAGIC_PREFIX;
alt_active = 0;
}
if (meta_active && UP <= keycode && keycode <= RIGHT) {
spawn send_move_msg(direction[keycode - ARROW_PREFIX], sc);
} else
tk->keyboard(t, keycode);
if (shifted) {
redisplay_keyboard(t, minitel, caps_locked, caps_locked);
shifted = 0;
}
}
s := <-rc =>
case s {
"kill" =>
break Work;
"minitel" =>
if (!minitel) {
minitel = 1;
redisplay_keyboard(t, minitel, shifted, caps_locked);
}
"standard" =>
if (minitel) {
minitel = 0;
redisplay_keyboard(t, minitel, shifted, caps_locked);
}
}
}
}
}
send_move_msg(dir: string, ch: chan of string)
{
ch <-= dir;
}
# Redisplay keyboard to reflect current state (shifted or unshifted)
redisplay_keyboard(t: ref Tk->Toplevel, minitel, shifted, caps_locked: int)
{
base: int;
if (shifted)
base = NKEYS;
else
base = 0;
for(i:=0; i<NKEYS; i++) {
n := base + i;
val := keyvals[n];
key := keys[n];
if (minitel) {
if (val >= int 'A' && val <= int 'Z') {
key = keys[n-NKEYS];
} else if (val >= int 'a' && val <= int 'z') {
key = keys[n+NKEYS];
}
}
tk->cmd(t, ".b" + string i + " configure -text {" + key
+ "} -command 'send keypress " + string val);
}
if (caps_locked)
tk->cmd(t, ".b" + string CAPSLOCKKEY + " configure -image Capslock_on");
else
tk->cmd(t, ".b" + string CAPSLOCKKEY + " configure -image Capslock_off");
tk->cmd(t, "update");
}