VirtualKeyboard/keyboard.html at master · cantrell/VirtualKeyboard · GitHub

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<!DOCTYPE html>

<html>
    <head>

        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
        <title>Keyboard</title>
        <meta name="apple-mobile-web-app-capable" content="yes" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"/>

        <style>

            body {
                padding: 0;
                margin: 0;
                overflow: hidden;
                background-color: #000;
            }

            #tray {
                position: absolute;
                top: 0;
                left: 0;
            }

            .keycap {
                color: #000;
                text-align: center;
                position: absolute;
                font-family: Verdana;
                border-radius: 5px;
                display: table;
            }

            .keycap:touch {
                color: red;
            }

            .keycap p {
                display: table-cell;
                vertical-align: middle;
            }

            .letterKey {
                font-size: 6mm;
            }

            .multiLetterKey {
                font-size: 5.0mm;
            }

            .nonLetterKey {
                font-size: 3.5mm;
            }

            .spacer {
                position: absolute;
            }

            .fadable {
                -webkit-transition: opacity .25s ease-in;
                -moz-transition: opacity .25s ease-in;
            }

        </style>

        <script src="/socket.io/socket.io.js"></script>
        <script src="keys.js" type="text/javascript"></script>

        <script type="text/javascript">

            //var SERVER_HOST = 'seeker.corp.adobe.com:8000';
            var SERVER_HOST = 'shorty.home:8000';

            // 132, 264
            var DPI = 132;

            //var KEY_GAP    = 3;
            var KEY_GAP    = 1;
            var KEY_HEIGHT = 18;

            var LEFT_MARGIN = 10;
            var TOP_MARGIN = 100;

            var KEY_COLOR = '#2abcdf';
            var KEY_BORDER_COLOR = '#2fe8fd';

            var ppm;
            var mode;
            var winW, winH;
            var shift;
            var socket;
            var enabled;

            function init() {
                socket = io.connect(SERVER_HOST);
                socket.on('enable', onEnable);
                var modes = getModesFromUrl();
                if (modes == null || modes.length == 0) return;
                mode = modes[0];
                if (modes.length > 1) DPI = modes[1];
                socket.emit(mode, null);
                enabled = true;
                shift = false;
                ppm = mmToPixels(1, DPI);
                //window.addEventListener('devicemotion', onDeviceModtion);
                window.addEventListener('resize', doLayout);
                doLayout();
            }

            function doLayout(event) {
                removeAllChildren(id('tray'));

                winW = window.innerWidth;
                winH = window.innerHeight;

                var keys = KEYBOARD;
                var x = 0;
                var y = 0;
                for (var i = 0; i < keys.length; ++i) {
                    var row = keys[i];
                    var side = 'left';
                    for (var j = 0; j < row.length; ++j) {
                        var keyData = row[j];
                        if (keyData == null) {
                            side = 'right';
                            continue;
                        }
                        if ((mode == side || mode == 'both') && keyData.labels != null) {
                            var key = getKey(keyData);
                            //key.setAttribute('style', 'width:'+(keyData.size*ppm)+'px;height:'+(KEY_HEIGHT*ppm)+'px;top:'+y+'px;left:'+x+'px;background-color:'+KEY_COLOR+';border:2px solid '+KEY_BORDER_COLOR);
                            key.style.width = (keyData.size * ppm) + 'px';
                            key.style.height = (KEY_HEIGHT * ppm) + 'px';
                            key.style.top = y + 'px';
                            key.style.left = x + 'px';
                            key.style['background-color'] = KEY_COLOR;
                            //key.style.border = '2px solid ' + KEY_BORDER_COLOR;
                            //key.style.padding = ((KEY_GAP) * ppm) + 'px';
                            //key.style.['padding-bottom'] = (KEY_GAP / 2) + 'px';
                            if (keyData.code) {
                                key.setAttribute('data-code', keyData.code);
                            } else {
                                if (keyData.labels.length == 1) {
                                    key.setAttribute('data-code', keyData.labels[0].toLowerCase().charCodeAt(0));
                                    key.setAttribute('data-meta-code', keyData.labels[0].toUpperCase().charCodeAt(0));
                                } else {
                                    key.setAttribute('data-code', keyData.labels[1].charCodeAt(0));
                                    key.setAttribute('data-meta-code', keyData.labels[0].charCodeAt(0));
                                }
                            }
                            if (keyData.id) key.setAttribute('id', keyData.id);
                            key.addEventListener('touchstart', onKeyDown);
                            key.addEventListener('touchend', onKeyUp);
                            id('tray').appendChild(key);
                        }
                        x += (keyData.size * ppm) + (KEY_GAP * ppm);
                    }
                    y += (KEY_HEIGHT * ppm) + (KEY_GAP * ppm);
                    x = 0;
                }
                var xPos = 0;
                if (mode == 'left') {
                    var bKey = id('key_b');
                    xPos = winW - (rmUnits(bKey.style.left) + rmUnits(bKey.style.width));
                    xPos -= LEFT_MARGIN;
                } else if (mode == 'right') {
                    var yKey = id('key_y');
                    xPos = rmUnits(yKey.style.left) * -1;
                    xPos += LEFT_MARGIN;
                }
                id('tray').style.left = xPos + 'px';
                var keyboardHeight = ((KEYBOARD.length * KEY_HEIGHT) + ((KEYBOARD.length - 1) * KEY_GAP)) * ppm;
                //id('tray').style.top = ((winH/2) - (keyboardHeight/2)) + 'px';
                id('tray').style.top = ((winH/1) - (keyboardHeight/1)) + 'px';
            }

            function getKey(keyData) {

                var labels = keyData.labels;

                var keycap = document.createElement('div');
                keycap.setAttribute('class', 'keycap');

                var p = document.createElement('p');
                keycap.appendChild(p);

                if (keyData.size == SIZES.LETTER) {
                    if (labels.length > 1) {
                        p.setAttribute('class', 'multiLetterKey');
                    } else {
                        p.setAttribute('class', 'letterKey');
                    }
                } else {
                    p.setAttribute('class', 'nonLetterKey');
                }

                var text = '';
                for (var i = 0; i < labels.length; ++i) {
                    if (i != 0) text += '<br/>';
                    text += labels[i];
                }

                p.innerHTML = text;
                return keycap;
            }

            function onKeyDown(event) {
                //if (!keystroke) return;
                if (event.currentTarget.getAttribute('data-code') == 20) {
                    socket.emit('enable', !enabled);
                    var capKey = id('key_caps');
                    capKey.innerHTML = (enabled) ? '<p>off</p>' : '<p>on</p' ;
                    return;
                }
                if (!enabled) return;
                var key = event.currentTarget;
                key.style['background-color'] = KEY_BORDER_COLOR;
                //key.style.border = '2px solid ' + KEY_COLOR;
                if (event.currentTarget.getAttribute('data-code') == 16) { shift = true; return };
                var code = (!shift) ? event.currentTarget.getAttribute('data-code') : event.currentTarget.getAttribute('data-meta-code');
                socket.emit('keystroke', code);
            }

            function onKeyUp(event) {
                var key = event.currentTarget;
                key.style['background-color'] = KEY_COLOR;
                //key.style.border = '2px solid ' + KEY_BORDER_COLOR;
                if (event.currentTarget.getAttribute('data-code') == 16) { shift = false; return };
            }

            function onEnable(data) {
                console.log(data);
                enabled = data;
            }

            var zAcceleration = 0;
            var keystroke = false;

            function onDeviceModtion(event) {
                var delta = zAcceleration - event.acceleration.z;
                zAcceleration = event.acceleration.z;
                keystroke = (delta > .09);
            }

            function getModesFromUrl() {
                var loc = document.location.href;
                if (loc.indexOf('#') != -1) {
                    var argsStr = loc.substr(loc.indexOf('#')+1, loc.length);
                    var args = argsStr.split(',');
                    if (args.length && args.length != 0) { return args; }
                }
                return null;
            }

            function removeAllChildren(element) { while (element.hasChildNodes()) { element.removeChild(element.firstChild);} };
            function id(name) { return document.getElementById(name); }
            function rmUnits(val) { return parseInt(val.substring(0, val.length - 2)) };
            function mmToPixels(mm, dpi) { return dpi * (mm / 25.4) };

            window.onload = init;

        </script>

    </head>
    <body>
        <div id="tray"></div>
    </body>
</html>