394 lines
10 KiB
Forth
394 lines
10 KiB
Forth
\ Copyright 2022 Bradley D. Nelson
|
|
\
|
|
\ Licensed under the Apache License, Version 2.0 (the "License");
|
|
\ you may not use this file except in compliance with the License.
|
|
\ You may obtain a copy of the License at
|
|
\
|
|
\ http://www.apache.org/licenses/LICENSE-2.0
|
|
\
|
|
\ Unless required by applicable law or agreed to in writing, software
|
|
\ distributed under the License is distributed on an "AS IS" BASIS,
|
|
\ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
\ See the License for the specific language governing permissions and
|
|
\ limitations under the License.
|
|
|
|
vocabulary web web definitions
|
|
|
|
: jseval! ( a n index -- ) 0 call ;
|
|
|
|
r|
|
|
(function(sp) {
|
|
var n = i32[sp>>2]; sp -= 4;
|
|
var a = i32[sp>>2]; sp -= 4;
|
|
var text = GetString(a, n);
|
|
eval(text);
|
|
return sp;
|
|
})
|
|
| 1 jseval!
|
|
: jseval ( a n -- ) 1 call ;
|
|
|
|
r~
|
|
context.inbuffer = [];
|
|
context.outbuffer = '';
|
|
if (!globalObj.write) {
|
|
function AddMeta(name, content) {
|
|
var meta = document.createElement('meta');
|
|
meta.name = name;
|
|
meta.content = content;
|
|
document.head.appendChild(meta);
|
|
}
|
|
|
|
AddMeta('apple-mobile-web-app-capable', 'yes');
|
|
AddMeta('apple-mobile-web-app-status-bar-style', 'black-translucent');
|
|
AddMeta('viewport', 'width=device-width, initial-scale=1.0, ' +
|
|
'maximum-scale=1.0, user-scalable=no, minimal-ui');
|
|
|
|
context.screen = document.getElementById('ueforth');
|
|
if (context.screen === null) {
|
|
context.screen = document.createElement('div');
|
|
context.screen.style.width = '100%';
|
|
document.body.appendChild(context.screen);
|
|
}
|
|
context.filler = document.createElement('div');
|
|
document.body.insertBefore(context.filler, document.body.firstChild);
|
|
context.canvas = document.createElement('canvas');
|
|
context.canvas.width = 1000;
|
|
context.canvas.height = 1000;
|
|
context.canvas.style.width = '1px';
|
|
context.canvas.style.height = '1px';
|
|
context.canvas.style.top = 0;
|
|
context.canvas.style.left = 0;
|
|
context.canvas.style.position = 'fixed';
|
|
context.canvas.style.backgroundColor = '#000';
|
|
context.screen.appendChild(context.canvas);
|
|
context.ctx = context.canvas.getContext('2d');
|
|
context.terminal = document.createElement('pre');
|
|
context.terminal.style.width = '100%';
|
|
context.terminal.style.whiteSpace = 'pre-wrap';
|
|
context.screen.appendChild(context.terminal);
|
|
|
|
const TAB = ['⭾', '⭾', 9, 9, 45];
|
|
const PIPE = ['\\', String.fromCharCode(124), 92, 124, 45];
|
|
const ENTER = ['⏎', '⏎', 13, 13, 70];
|
|
const CTRL = ['ctrl', 'ctrl', 0, 0, 60];
|
|
const SHIFT = ['⇧', '⇧', 0, 0, 75];
|
|
const BACKSPACE = ['⌫', '⌫', 8, 8, 60];
|
|
const BACKTICK = [String.fromCharCode(96), String.fromCharCode(126), 96, 126];
|
|
const G15 = ['Gap', 15];
|
|
const G20 = ['Gap', 20];
|
|
const G35 = ['Gap', 35];
|
|
const KEYMAP = [
|
|
'1!', '2@', '3#', '4$', '5%', '6^', '7&', '8*', '9(', '0)', '-_', '=+', BACKSPACE, 'Newline',
|
|
G15, 'qQ', 'wW', 'eE', 'rR', 'tT', 'yY', 'uU', 'iI', 'oO', 'pP', '[{', ']}', PIPE, 'Newline',
|
|
G20, 'aA', 'sS', 'dD', 'fF', 'gG', 'hH', 'jJ', 'kK', 'lL', ';:', '\'"', ENTER, 'Newline',
|
|
G35, 'zZ', 'xX', 'cC', 'vV', 'bB', 'nN', 'mM', ',<', '.>', '/?', BACKTICK, 'Newline',
|
|
SHIFT, [' ', ' ', 32, 32, 9 * 30], SHIFT,
|
|
];
|
|
const KEY_COLOR = 'linear-gradient(to bottom right, #ccc, #999)';
|
|
const KEY_GOLD = 'linear-gradient(to bottom right, #fc4, #c91)';
|
|
context.keyboard = document.createElement('div');
|
|
var keys = [];
|
|
var shift = 0;
|
|
function UpdateKeys() {
|
|
for (var i = 0; i < keys.length; ++i) {
|
|
keys[i].update();
|
|
}
|
|
}
|
|
function AddKey(item) {
|
|
if (item === 'Newline') {
|
|
var k = document.createElement('br');
|
|
context.keyboard.appendChild(k);
|
|
return;
|
|
}
|
|
var k = document.createElement('button');
|
|
k.style.verticalAlign = 'middle';
|
|
k.style.border = 'none';
|
|
k.style.margin = '0';
|
|
k.style.padding = '0';
|
|
k.style.backgroundImage = 'linear-gradient(to bottom right, #ccc, #999)';
|
|
k.style.width = (100 / 15) + '%';
|
|
k.style.height = '30px';
|
|
if (item[0] === 'Gap') {
|
|
k.style.opacity = 0;
|
|
k.style.width = (100 / 15 * item[1] / 30) + '%';
|
|
context.keyboard.appendChild(k);
|
|
return;
|
|
}
|
|
if (item.length > 4) {
|
|
k.style.width = (100 / 15 * item[4] / 30) + '%';
|
|
}
|
|
if (item.length > 2) {
|
|
var keycodes = [item[2], item[3]];
|
|
} else {
|
|
var keycodes = [item[0].charCodeAt(0), item[1].charCodeAt(0)];
|
|
}
|
|
var labels = [item[0], item[1]];
|
|
k.onclick = function() {
|
|
if (item[0] === SHIFT[0]) {
|
|
shift = 1 - shift;
|
|
UpdateKeys();
|
|
} else {
|
|
context.inbuffer.push(keycodes[shift]);
|
|
}
|
|
};
|
|
k.update = function() {
|
|
if (item[0] === SHIFT[0]) {
|
|
k.style.backgroundImage = shift ? KEY_GOLD : KEY_COLOR;
|
|
}
|
|
k.innerHTML = labels[shift];
|
|
};
|
|
context.keyboard.appendChild(k);
|
|
keys.push(k);
|
|
}
|
|
for (var i = 0; i < KEYMAP.length; ++i) {
|
|
var item = KEYMAP[i];
|
|
AddKey(item);
|
|
}
|
|
UpdateKeys();
|
|
if (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)) {
|
|
context.screen.appendChild(context.keyboard);
|
|
}
|
|
|
|
context.text_fraction = 1667;
|
|
context.min_text_portion = 120;
|
|
context.mode = 1;
|
|
function setMode(mode) {
|
|
if (context.mode === mode) {
|
|
return ;
|
|
}
|
|
if (mode) {
|
|
context.filler.style.display = '';
|
|
context.canvas.style.display = '';
|
|
} else {
|
|
context.filler.style.display = 'none';
|
|
context.canvas.style.display = 'none';
|
|
}
|
|
context.mode = mode;
|
|
}
|
|
context.setMode = setMode;
|
|
function Resize() {
|
|
var width = window.innerWidth;
|
|
var theight = Math.max(context.min_text_portion,
|
|
Math.floor(window.innerHeight *
|
|
context.min_text_portion / 10000));
|
|
var height = window.innerHeight - theight;
|
|
if (width === context.width && height === context.height) {
|
|
return;
|
|
}
|
|
context.canvas.style.width = width + 'px';
|
|
context.canvas.style.height = height + 'px';
|
|
if (context.text_fraction == 0 &&
|
|
context.min_text_portion == 0) {
|
|
context.filler.style.width = '1px';
|
|
context.filler.style.height = '0px';
|
|
} else {
|
|
context.filler.style.width = '1px';
|
|
context.filler.style.height = height + 'px';
|
|
}
|
|
context.width = width;
|
|
context.height = height;
|
|
}
|
|
context.Resize = Resize;
|
|
function Clear() {
|
|
Resize();
|
|
context.ctx.fillStyle = '#000';
|
|
context.ctx.fillRect(0, 0, context.canvas.width, context.canvas.height);
|
|
}
|
|
context.Clear = Clear;
|
|
window.onresize = function(e) {
|
|
Resize();
|
|
};
|
|
function KeyPress(e) {
|
|
context.inbuffer.push(e.keyCode);
|
|
e.preventDefault();
|
|
return false;
|
|
}
|
|
window.onkeypress = KeyPress;
|
|
function KeyDown(e) {
|
|
if (e.keyCode == 8) {
|
|
context.inbuffer.push(e.keyCode);
|
|
e.preventDefault();
|
|
return false;
|
|
}
|
|
}
|
|
window.onkeydown = KeyDown;
|
|
context.Update = function(active) {
|
|
var cursor = String.fromCharCode(0x2592);
|
|
context.terminal.innerText = context.outbuffer + cursor;
|
|
};
|
|
setMode(0);
|
|
context.Clear();
|
|
}
|
|
~ jseval
|
|
|
|
r|
|
|
(function(sp) {
|
|
var n = i32[sp>>2]; sp -= 4;
|
|
var a = i32[sp>>2]; sp -= 4;
|
|
if (globalObj.write) {
|
|
var text = GetString(a, n);
|
|
write(text);
|
|
} else {
|
|
for (var i = 0; i < n; ++i) {
|
|
var ch = u8[a + i];
|
|
if (ch == 12) {
|
|
context.outbuffer = '';
|
|
} else if (ch == 8) {
|
|
context.outbuffer = context.outbuffer.slice(0, -1);
|
|
} else if (ch == 13) {
|
|
} else {
|
|
context.outbuffer += String.fromCharCode(ch);
|
|
}
|
|
}
|
|
context.Update();
|
|
window.scrollTo(0, document.body.scrollHeight);
|
|
}
|
|
return sp;
|
|
})
|
|
| 2 jseval!
|
|
: web-type ( a n -- ) 2 call yield ;
|
|
' web-type is type
|
|
|
|
r|
|
|
(function(sp) {
|
|
if (globalObj.readline && !context.inbuffer.length) {
|
|
var line = readline();
|
|
for (var i = 0; i < line.length; ++i) {
|
|
context.inbuffer.push(line.charCodeAt(i));
|
|
}
|
|
context.inbuffer.push(13);
|
|
}
|
|
if (context.inbuffer.length) {
|
|
sp += 4; i32[sp>>2] = context.inbuffer.shift();
|
|
} else {
|
|
sp += 4; i32[sp>>2] = 0;
|
|
}
|
|
return sp;
|
|
})
|
|
| 3 jseval!
|
|
: web-key ( -- n ) begin yield 3 call dup if exit then drop again ;
|
|
' web-key is key
|
|
|
|
r|
|
|
(function(sp) {
|
|
if (globalObj.readline) {
|
|
sp += 4; i32[sp>>2] = -1;
|
|
return sp;
|
|
}
|
|
sp += 4; i32[sp>>2] = context.inbuffer.length ? -1 : 0;
|
|
return sp;
|
|
})
|
|
| 4 jseval!
|
|
: web-key? ( -- f ) yield 4 call ;
|
|
' web-key? is key?
|
|
|
|
r|
|
|
(function(sp) {
|
|
var val = i32[sp>>2]; sp -= 4;
|
|
if (globalObj.quit) {
|
|
quit(val);
|
|
} else {
|
|
Init();
|
|
}
|
|
return sp;
|
|
})
|
|
| 5 jseval!
|
|
: terminate ( n -- ) 5 call ;
|
|
|
|
r|
|
|
(function(sp) {
|
|
if (globalObj.write) {
|
|
sp += 4; i32[sp>>2] = 0; // Disable echo.
|
|
} else {
|
|
sp += 4; i32[sp>>2] = -1; // Enable echo.
|
|
}
|
|
return sp;
|
|
})
|
|
| 6 jseval! 6 call echo !
|
|
|
|
r|
|
|
(function(sp) {
|
|
var mode = i32[sp>>2]; sp -= 4;
|
|
if (globalObj.write) {
|
|
return sp;
|
|
}
|
|
context.setMode(mode);
|
|
return sp;
|
|
})
|
|
| 7 jseval!
|
|
|
|
r|
|
|
(function(sp) {
|
|
var c = i32[sp>>2]; sp -= 4;
|
|
var h = i32[sp>>2]; sp -= 4;
|
|
var w = i32[sp>>2]; sp -= 4;
|
|
var y = i32[sp>>2]; sp -= 4;
|
|
var x = i32[sp>>2]; sp -= 4;
|
|
if (globalObj.write) {
|
|
return sp;
|
|
}
|
|
function HexDig(n) {
|
|
return ('0' + n.toString(16)).slice(-2);
|
|
}
|
|
context.ctx.fillStyle = '#' + HexDig((c >> 16) & 0xff) +
|
|
HexDig((c >> 8) & 0xff) +
|
|
HexDig(c & 0xff);
|
|
context.ctx.fillRect(x, y, w, h);
|
|
return sp;
|
|
})
|
|
| 8 jseval!
|
|
|
|
r|
|
|
(function(sp) {
|
|
var h = i32[sp>>2]; sp -= 4;
|
|
var w = i32[sp>>2]; sp -= 4;
|
|
if (globalObj.write) {
|
|
return sp;
|
|
}
|
|
context.canvas.width = w;
|
|
context.canvas.height = h;
|
|
return sp;
|
|
})
|
|
| 9 jseval!
|
|
|
|
r|
|
|
(function(sp) {
|
|
if (globalObj.write) {
|
|
sp += 4; i32[sp>>2] = 1;
|
|
sp += 4; i32[sp>>2] = 1;
|
|
return sp;
|
|
}
|
|
sp += 4; i32[sp>>2] = context.width;
|
|
sp += 4; i32[sp>>2] = context.height;
|
|
return sp;
|
|
})
|
|
| 10 jseval!
|
|
|
|
r|
|
|
(function(sp) {
|
|
var mp = i32[sp>>2]; sp -= 4;
|
|
var tf = i32[sp>>2]; sp -= 4;
|
|
if (globalObj.write) {
|
|
return sp;
|
|
}
|
|
context.text_fraction = tf;
|
|
context.min_text_portion = mp;
|
|
context.Resize();
|
|
return sp;
|
|
})
|
|
| 11 jseval!
|
|
|
|
forth definitions web
|
|
|
|
: bye 0 terminate ;
|
|
: page 12 emit ;
|
|
: gr 1 7 call ;
|
|
: text 0 7 call ;
|
|
$ffffff value color
|
|
: box ( x y w h -- ) color 8 call ;
|
|
: window ( w h -- ) 9 call ;
|
|
: viewport@ ( -- w h ) 10 call ;
|
|
: show-text ( f -- ) if 1667 120 else 0 0 then 11 call ;
|
|
|
|
forth definitions
|