spacedeck-open/public/javascripts/helper.js

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JavaScript
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2017-04-07 01:29:05 +02:00
function validateEmail(email) {
var re = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
return re.test(email);
}
function zero_pad(num) {
zero = 2 - num.toString().length + 1;
return Array(+(zero > 0 && zero)).join("0") + num;
}
function format_time(seconds) {
if (isNaN(seconds)) seconds = 0;
return zero_pad(parseInt(seconds/60)) + ":" + zero_pad(parseInt(seconds%60));
}
var url_to_links_rx = /(^|[\s\n]|>)((?:https?|ftp):\/\/[\-A-Z0-9+\u0026\u2019@#\/%?=()~_|!:,.;]*[\-A-Z0-9+\u0026@#\/%=~()_|])/gi;
function urls_to_links(text) {
return text.replace(url_to_links_rx, "$1<a target='_blank' href='$2'>$2</a>");
}
// http://stackoverflow.com/questions/901115/how-can-i-get-query-string-values-in-javascript
function get_query_param(name) {
name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
results = regex.exec(location.search);
return results == null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
}
// http://stackoverflow.com/questions/1349404/generate-a-string-of-5-random-characters-in-javascript
function random_string(len) {
var text = "";
var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!-_";
for (var i=0; i < len; i++) {
text += possible.charAt(Math.floor(Math.random() * possible.length));
}
return text;
}
function fixup_touches(evt) {
// convert touch events
var e = evt;
if (evt.originalEvent) e = evt.originalEvent;
evt = {
pageX: evt.pageX,
pageY: evt.pageY,
offsetX: evt.offsetX,
offsetY: evt.offsetY,
clientX: evt.clientX,
clientY: evt.clientY,
layerX: evt.layerX,
layerY: evt.layerY,
target: evt.target,
currentTarget: evt.currentTarget
};
if (e.changedTouches && e.changedTouches.length) {
evt.pageX = e.changedTouches[0].pageX;
evt.pageY = e.changedTouches[0].pageY;
} else if (e.touches && e.touches.length) {
evt.pageX = e.touches[0].pageX;
evt.pageY = e.touches[0].pageY;
}
return evt;
}
function rgb_to_hex(r, g, b) {
return ((1 << 24) + (parseInt(r) << 16) + (parseInt(g) << 8) + parseInt(b)).toString(16).slice(1);
}
function hex_to_rgba(color) {
if (!color || color == "transparent") {
return {r:0,g:0,b:0,a:0};
}
if (color.match("rgb\\(")) {
color = color.replace("rgb(","").replace(")","").split(",");
return {
r: color[0],
g: color[1],
b: color[2],
a: 255
};
}
if (color.match("rgba\\(")) {
color = color.replace("rgba(","").replace(")","").split(",");
return {
r: color[0],
g: color[1],
b: color[2],
a: color[3]*255
};
}
var r = parseInt(color.substr(1,2), 16);
var g = parseInt(color.substr(3,2), 16);
var b = parseInt(color.substr(5,2), 16);
var a = 255;
if (color.length>7) {
a = parseInt(color.substr(7,2), 16);
}
return {r:r,g:g,b:b,a:a};
}
function rgb_to_hsv () {
var rr, gg, bb,
r = arguments[0] / 255,
g = arguments[1] / 255,
b = arguments[2] / 255,
h, s,
v = Math.max(r, g, b),
diff = v - Math.min(r, g, b),
diffc = function(c) {
return (v - c) / 6 / diff + 1 / 2;
};
if (diff == 0) {
h = s = 0;
} else {
s = diff / v;
rr = diffc(r);
gg = diffc(g);
bb = diffc(b);
if (r === v) {
h = bb - gg;
} else if (g === v) {
h = (1 / 3) + rr - bb;
} else if (b === v) {
h = (2 / 3) + gg - rr;
}
if (h < 0) {
h += 1;
} else if (h > 1) {
h -= 1;
}
}
return {
h: h || 0,
s: s || 0,
v: v || 0
};
}
// values?
function hsv_to_rgb(h, s, v) {
var r, g, b, i, f, p, q, t;
if (h && s === undefined && v === undefined) {
s = h.s, v = h.v, h = h.h;
}
i = Math.floor(h * 6);
f = h * 6 - i;
p = v * (1 - s);
q = v * (1 - f * s);
t = v * (1 - (1 - f) * s);
switch (i % 6) {
case 0: r = v, g = t, b = p; break;
case 1: r = q, g = v, b = p; break;
case 2: r = p, g = v, b = t; break;
case 3: r = p, g = q, b = v; break;
case 4: r = t, g = p, b = v; break;
case 5: r = v, g = p, b = q; break;
}
return {
r: Math.round(r * 255),
g: Math.round(g * 255),
b: Math.round(b * 255)
};
}
temp_grid_canvas = document.createElement("canvas");
function render_grid(w,h,divisions) {
temp_grid_canvas.width = w;
temp_grid_canvas.height = h;
var step = w / divisions;
var ctx = temp_grid_canvas.getContext('2d');
ctx.strokeStyle = "#f0f0f0";
ctx.lineWidth = 1;
var gc1 = "rgba(60,60,60,0.125)";
var gc2 = "rgba(60,60,60,0.075)";
for (var y=0; y<h; y+=step) {
if (y==0) {
ctx.fillStyle = gc1;
} else {
ctx.fillStyle = gc2;
}
ctx.fillRect(0,y,w,1);
}
for (var x=0; x<h; x+=step) {
if (x==0) {
ctx.fillStyle = gc1;
} else {
ctx.fillStyle = gc2;
}
ctx.fillRect(x,0,1,h);
}
var data_url = temp_grid_canvas.toDataURL()
return data_url;
}
function focus_contenteditable(el, end) {
range = document.createRange();
if (!range || !el) return;
var p = $(el).find("p");
if (!p.length) return;
// get last paragraph
p = p[p.length-1];
range.selectNodeContents(p);
selection = window.getSelection();
selection.removeAllRanges();
if (range.toString()!="Text") {
// move cursor to the end
range.collapse(false);
}
selection.addRange(range);
el.focus();
}
function setup_exclusive_audio_video_playback() {
document.addEventListener('play', function(e) {
var tags = ["audio","video"];
for (var i=0; i<tags.length; i++) {
var tag = tags[i];
var players = document.getElementsByTagName(tag);
for (var i = 0, len = players.length; i < len; i++) {
if (players[i] != e.target) {
players[i].pause();
}
}
}
}, true);
}