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timeliner.js
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timeliner.js
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(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({"/Users/joshua/dev/gits/timeliner/node_modules/do.js/do.js":[function(require,module,exports){
function Do(parent) {
var listeners = [];
this.do = function(callback) {
listeners.push(callback);
};
this.undo = function(callback) {
listeners.splice(listeners.indexOf(callback), 1);
};
this.fire = function() {
for (var v = 0; v < listeners.length; v++) {
listeners[v].apply(parent, arguments);
}
};
}
if (typeof(module) === 'object') module.exports = Do;
},{}],"/Users/joshua/dev/gits/timeliner/package.json":[function(require,module,exports){
module.exports={
"name": "timeliner",
"version": "1.4.0",
"description": "simple js animation timeline library",
"main": "timeliner.js",
"scripts": {
"build": "browserify src/*.js --full-path=false -o timeliner.js",
"mini": "browserify src/*.js -g uglifyify --full-path=false -o timeliner.min.js",
"watch": "watchify src/*.js -o timeliner.js -v",
"start": "npm run watch",
"test": "echo \"Error: no tests :(\" && exit 1"
},
"repository": {
"type": "git",
"url": "https://github.com/zz85/timeliner.git"
},
"keywords": [
"timeline",
"animation",
"keyframe",
"tween",
"ease",
"controls",
"gui"
],
"author": "joshua koo",
"license": "MIT",
"bugs": {
"url": "https://github.com/zz85/timeliner/issues"
},
"homepage": "https://github.com/zz85/timeliner",
"devDependencies": {
"uglifyify": "^2.6.0"
}
}
},{}],"/Users/joshua/dev/gits/timeliner/src/datastore.js":[function(require,module,exports){
var package_json = require('../package.json'),
Do = require('do.js');
// Data Store with a source of truth
function DataStore() {
this.DELIMITER = ':';
this.blank();
this.onOpen = new Do();
this.onSave = new Do();
}
DataStore.prototype.blank = function() {
var data = {};
data.version = package_json.version;
data.modified = new Date().toString();
data.title = 'Untitled';
data.layers = [];
this.data = data;
};
DataStore.prototype.update = function() {
var data = this.data;
data.version = package_json.version;
data.modified = new Date().toString();
};
DataStore.prototype.setJSONString = function(data) {
this.data = JSON.parse(data);
};
DataStore.prototype.setJSON = function(data) {
this.data = data;
};
DataStore.prototype.getJSONString = function(format) {
return JSON.stringify(this.data, null, format);
};
DataStore.prototype.getValue = function(paths) {
var descend = paths.split(this.DELIMITER);
var reference = this.data;
for (var i = 0, il = descend.length; i < il; i++) {
var path = descend[i];
if (reference[path] === undefined) {
console.warn('Cant find ' + paths);
return;
}
reference = reference[path];
}
return reference;
};
DataStore.prototype.setValue = function(paths, value) {
var descend = paths.split(this.DELIMITER);
var reference = this.data;
for (var i = 0, il = descend.length - 1; path = descend[i], i < il ; i++) {
reference = reference[path];
}
reference[path] = value;
};
DataStore.prototype.get = function(path, suffix) {
if (suffix) path = suffix + this.DELIMITER + path;
return new DataProx(this, path);
};
function DataProx(store, path) {
this.path = path;
this.store = store;
}
DataProx.prototype = {
get value() {
return this.store.getValue(this.path);
},
set value(val) {
this.store.setValue(this.path, val);
}
};
DataProx.prototype.get = function(path) {
return this.store.get(path, this.path);
};
module.exports = DataStore;
},{"../package.json":"/Users/joshua/dev/gits/timeliner/package.json","do.js":"/Users/joshua/dev/gits/timeliner/node_modules/do.js/do.js"}],"/Users/joshua/dev/gits/timeliner/src/dispatcher.js":[function(require,module,exports){
/**************************/
// Dispatcher
/**************************/
function Dispatcher() {
var event_listeners = {
};
function on(type, listener) {
if (!(type in event_listeners)) {
event_listeners[type] = [];
}
var listeners = event_listeners[type];
listeners.push(listener);
}
function fire(type) {
var args = Array.prototype.slice.call(arguments);
args.shift();
var listeners = event_listeners[type];
if (!listeners) return;
for (var i = 0; i < listeners.length; i++) {
var listener = listeners[i];
listener.apply(listener, args);
}
}
this.on = on;
this.fire = fire;
}
module.exports = Dispatcher;
},{}],"/Users/joshua/dev/gits/timeliner/src/font.json":[function(require,module,exports){
module.exports=module.exports=module.exports=module.exports=module.exports=module.exports=module.exports=module.exports=module.exports=module.exports=module.exports=module.exports=module.exports=module.exports=module.exports=module.exports=module.exports=module.exports=module.exports=module.exports=module.exports=module.exports=module.exports=module.exports=module.exports=module.exports={
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"fonts": {
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},
"minus": {
"advanceWidth": 1408,
"commands": "M,1408,800 C,1408,853,1365,896,1312,896 L,96,896 C,43,896,0,853,0,800 L,0,608 C,0,555,43,512,96,512 L,1312,512 C,1365,512,1408,555,1408,608 Z"
},
"ok": {
"advanceWidth": 1792,
"commands": "M,1671,970 C,1671,995,1661,1020,1643,1038 L,1507,1174 C,1489,1192,1464,1202,1439,1202 C,1414,1202,1389,1192,1371,1174 L,715,517 L,421,812 C,403,830,378,840,353,840 C,328,840,303,830,285,812 L,149,676 C,131,658,121,633,121,608 C,121,583,131,558,149,540 L,511,178 L,647,42 C,665,24,690,14,715,14 C,740,14,765,24,783,42 L,919,178 L,1643,902 C,1661,920,1671,945,1671,970 Z"
},
"remove": {
"advanceWidth": 1408,
"commands": "M,1298,214 C,1298,239,1288,264,1270,282 L,976,576 L,1270,870 C,1288,888,1298,913,1298,938 C,1298,963,1288,988,1270,1006 L,1134,1142 C,1116,1160,1091,1170,1066,1170 C,1041,1170,1016,1160,998,1142 L,704,848 L,410,1142 C,392,1160,367,1170,342,1170 C,317,1170,292,1160,274,1142 L,138,1006 C,120,988,110,963,110,938 C,110,913,120,888,138,870 L,432,576 L,138,282 C,120,264,110,239,110,214 C,110,189,120,164,138,146 L,274,10 C,292,-8,317,-18,342,-18 C,367,-18,392,-8,410,10 L,704,304 L,998,10 C,1016,-8,1041,-18,1066,-18 C,1091,-18,1116,-8,1134,10 L,1270,146 C,1288,164,1298,189,1298,214 Z"
},
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},
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"commands": "M,1024,736 C,1024,753,1009,768,992,768 L,416,768 C,399,768,384,753,384,736 L,384,672 C,384,655,399,640,416,640 L,992,640 C,1009,640,1024,655,1024,672 M,1152,704 C,1152,457,951,256,704,256 C,457,256,256,457,256,704 C,256,951,457,1152,704,1152 C,951,1152,1152,951,1152,704 M,1664,-128 C,1664,-94,1650,-61,1627,-38 L,1284,305 C,1365,422,1408,562,1408,704 C,1408,1093,1093,1408,704,1408 C,315,1408,0,1093,0,704 C,0,315,315,0,704,0 C,846,0,986,43,1103,124 L,1446,-218 C,1469,-242,1502,-256,1536,-256 C,1607,-256,1664,-199,1664,-128 Z"
},
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},{}],"/Users/joshua/dev/gits/timeliner/src/handle_drag.js":[function(require,module,exports){
function handleDrag(element, ondown, onmove, onup, down_criteria) {
var pointer = null;
var bounds = element.getBoundingClientRect();
element.addEventListener('mousedown', onMouseDown);
function onMouseDown(e) {
handleStart(e);
if (down_criteria && !down_criteria(pointer)) {
pointer = null;
return;
}
document.addEventListener('mousemove', onMouseMove);
document.addEventListener('mouseup', onMouseUp);
ondown(pointer);
e.preventDefault();
}
function onMouseMove(e) {
handleMove(e);
pointer.moved = true;
onmove(pointer);
}
function handleStart(e) {
bounds = element.getBoundingClientRect();
var currentx = e.clientX, currenty = e.clientY;
pointer = {
startx: currentx,
starty: currenty,
x: currentx,
y: currenty,
dx: 0,
dy: 0,
offsetx: currentx - bounds.left,
offsety: currenty - bounds.top,
moved: false
};
}
function handleMove(e) {
bounds = element.getBoundingClientRect();
var currentx = e.clientX,
currenty = e.clientY,
offsetx = currentx - bounds.left,
offsety = currenty - bounds.top;
pointer.x = currentx;
pointer.y = currenty;
pointer.dx = e.clientX - pointer.startx;
pointer.dy = e.clientY - pointer.starty;
pointer.offsetx = offsetx;
pointer.offsety = offsety;
}
function onMouseUp(e) {
handleMove(e);
onup(pointer);
pointer = null;
document.removeEventListener('mousemove', onMouseMove);
document.removeEventListener('mouseup', onMouseUp);
}
element.addEventListener('touchstart', onTouchStart);
function onTouchStart(te) {
if (te.touches.length == 1) {
var e = te.touches[0];
if (down_criteria && !down_criteria(e)) return;
te.preventDefault();
handleStart(e);
ondown(pointer);
}
element.addEventListener('touchmove', onTouchMove);
element.addEventListener('touchend', onTouchEnd);
}
function onTouchMove(te) {
var e = te.touches[0];
onMouseMove(e);
}
function onTouchEnd(e) {
// var e = e.touches[0];
onMouseUp(e);
element.removeEventListener('touchmove', onTouchMove);
element.removeEventListener('touchend', onTouchEnd);
}
this.release = function() {
element.removeEventListener('mousedown', onMouseDown);
element.removeEventListener('touchstart', onTouchStart);
};
}
module.exports = handleDrag;
},{}],"/Users/joshua/dev/gits/timeliner/src/icon_button.js":[function(require,module,exports){
var font = require('./font.json'),
Theme = require('./theme'),
style = require('./utils').style;
var dp;
function IconButton(size, icon, tooltip, dp) {
var iconStyle = {
padding: '0.2em 0.4em',
margin: '0em',
background: 'none',
outline: 'none',
fontSize: '16px',
border: 'none',
borderRadius: '0.2em',
};
var button = document.createElement('button');
style(button, iconStyle);
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
button.appendChild(canvas);
this.ctx = ctx;
this.dom = button;
this.canvas = canvas;
var me = this;
this.size = size;
this.resize = function() {
var dpr = window.devicePixelRatio;
var height = size;
var glyph = font.fonts[icon];
canvas.height = height * dpr;
canvas.style.height = height + 'px';
var scale = height / font.unitsPerEm;
var width = glyph.advanceWidth * scale + 0.5 | 0;
width += 2;
height += 2;
canvas.width = width * dpr;
canvas.style.width = width + 'px';
ctx.fillStyle = Theme.c;
me.draw();
};
if (dp) dp.on('resize', this.resize);
this.setSize = function(s) {
size = s;
this.resize();
};
this.setIcon = function(icon) {
me.icon = icon;
if (!font.fonts[icon]) console.warn('Font icon not found!');
this.resize();
};
this.onClick = function(e) {
button.addEventListener('click', e);
};
var LONG_HOLD_DURATION = 500;
var longHoldTimer;
this.onLongHold = function(f) {
// not most elagent but oh wells.
function startHold(e) {
e.preventDefault();
e.stopPropagation();
longHoldTimer = setTimeout(function() {
if (longHoldTimer) {
console.log('LONG HOLD-ED!');
f();
}
}, LONG_HOLD_DURATION);
}
function clearLongHoldTimer() {
clearTimeout(longHoldTimer);
}
button.addEventListener('mousedown', startHold);
button.addEventListener('touchstart', startHold);
button.addEventListener('mouseup', clearLongHoldTimer);
button.addEventListener('mouseout', clearLongHoldTimer);
button.addEventListener('touchend', clearLongHoldTimer);
};
this.setTip = function(tip) {
tooltip = tip;
};
var borders = {
border: '1px solid ' + Theme.b,
// boxShadow: Theme.b + ' 1px 1px'
};
var no_borders = {
border: '1px solid transparent',
// boxShadow: 'none'
};
var normal = 'none'; // Theme.b;
var up = Theme.c;
var down = Theme.b;
button.style.background = normal;
style(button, no_borders);
button.addEventListener('mouseover', function() {
// button.style.background = up;
style(button, borders);
ctx.fillStyle = Theme.d;
me.dropshadow = true;
me.draw();
if (tooltip && dp) dp.fire('status', 'button: ' + tooltip);
});
button.addEventListener('mousedown', function() {
button.style.background = down;
// ctx.fillStyle = Theme.b;
// me.draw();
});
button.addEventListener('mouseup', function() {
// ctx.fillStyle = Theme.d;
button.style.background = normal;
style(button, borders);
// me.draw();
});
button.addEventListener('mouseout', function() {
// ctx.fillStyle = Theme.c;
button.style.background = normal;
style(button, no_borders);
me.dropshadow = false;
ctx.fillStyle = Theme.c;
me.draw();
});
if (icon) this.setIcon(icon);
}
IconButton.prototype.CMD_MAP = {
M: 'moveTo',
L: 'lineTo',
Q: 'quadraticCurveTo',
C: 'bezierCurveTo',
Z: 'closePath'
};
IconButton.prototype.draw = function() {
if (!this.icon) return;
var ctx = this.ctx;
var glyph = font.fonts[this.icon];
var height = this.size;
var dpr = window.devicePixelRatio;
var scale = height / font.unitsPerEm * dpr;
var path_commands = glyph.commands.split(' ');
ctx.save();
ctx.clearRect(0, 0, this.canvas.width * dpr, this.canvas.height * dpr);
if (this.dropshadow) {
ctx.save();
ctx.fillStyle = Theme.b;
ctx.translate(1.5 * dpr, 1.5 * dpr);
ctx.scale(scale, -scale);
ctx.translate(0 , -font.ascender);
ctx.beginPath();
for (var i = 0, il = path_commands.length; i < il; i++) {
var cmds = path_commands[i].split(',');
var params = cmds.slice(1);
ctx[this.CMD_MAP[cmds[0]]].apply(ctx, params);
}
ctx.fill();
ctx.restore();
}
ctx.scale(scale, -scale);
ctx.translate(0, -font.ascender);
ctx.beginPath();
for (var i = 0, il = path_commands.length; i < il; i++) {
var cmds = path_commands[i].split(',');
var params = cmds.slice(1);
ctx[this.CMD_MAP[cmds[0]]].apply(ctx, params);
}
ctx.fill();
ctx.restore();
/*
var triangle = height / 3 * dpr;
ctx.save();
// ctx.translate(dpr * 2, 0);
// ctx.fillRect(this.canvas.width - triangle, this.canvas.height - triangle, triangle, triangle);
ctx.beginPath();
ctx.moveTo(this.canvas.width - triangle, this.canvas.height - triangle / 2);
ctx.lineTo(this.canvas.width, this.canvas.height - triangle / 2);
ctx.lineTo(this.canvas.width - triangle / 2, this.canvas.height);
ctx.fill();
ctx.restore();
*/
};
module.exports = IconButton;
},{"./font.json":"/Users/joshua/dev/gits/timeliner/src/font.json","./theme":"/Users/joshua/dev/gits/timeliner/src/theme.js","./utils":"/Users/joshua/dev/gits/timeliner/src/utils.js"}],"/Users/joshua/dev/gits/timeliner/src/layer_cabinet.js":[function(require,module,exports){
var Settings = require('./settings'),
LayerUI = require('./ui/layer_view'),
IconButton = require('./icon_button'),
style = require('./utils').style,
Theme = require('./theme'),
STORAGE_PREFIX = require('./utils').STORAGE_PREFIX,
NumberUI = require('./ui/number')
;
function LayerCabinet(data, dispatcher) {
var layer_store = data.get('layers');
var div = document.createElement('div');
var top = document.createElement('div');
top.style.cssText = 'margin: 0px; top: 0; left: 0; height: ' + Settings.MARKER_TRACK_HEIGHT + 'px';
// top.style.textAlign = 'right';
var layer_scroll = document.createElement('div');
style(layer_scroll, {
position: 'absolute',
top: Settings.MARKER_TRACK_HEIGHT + 'px',
// height: (Settings.height - Settings.MARKER_TRACK_HEIGHT) + 'px'
left: 0,
right: 0,
bottom: 0,
overflow: 'hidden'
});
div.appendChild(layer_scroll);
var playing = false;
var play_button = new IconButton(16, 'play', 'play', dispatcher);
play_button.onClick(function(e) {
e.preventDefault();
dispatcher.fire('controls.toggle_play');
});
var stop_button = new IconButton(16, 'stop', 'stop', dispatcher);
stop_button.onClick(function(e) {
dispatcher.fire('controls.stop');
});
var undo_button = new IconButton(16, 'undo', 'undo', dispatcher);
undo_button.onClick(function() {
dispatcher.fire('controls.undo');
});
var redo_button = new IconButton(16, 'repeat', 'redo', dispatcher);
redo_button.onClick(function() {
dispatcher.fire('controls.redo');
});
var range = document.createElement('input');
range.type = "range";
range.min = 1;
range.value = Settings.time_scale;
range.max = 600;
range.step = 1;
style(range, {
width: '70px'
});
var draggingRange = 0;
range.addEventListener('mousedown', function() {
draggingRange = 1;
});
range.addEventListener('mouseup', function() {
draggingRange = 0;
changeRange();
});
range.addEventListener('mousemove', function() {
if (!draggingRange) return;
changeRange();
});
div.appendChild(top);
var time_options = {
min: 0,
step: 0.01
};
var currentTime = new NumberUI(time_options);
var totalTime = new NumberUI(time_options);
var currentTimeStore = data.get('ui:currentTime');
var totalTimeStore = data.get('ui:totalTime');
// UI2StoreBind(view, datastore) {
// view.onChange.do(function(v) {
// datastore.value = view;
// })
// datastore.onChange.do(function(v) {
// view.setValue = v;
// })
// }
currentTime.onChange.do(function(value, done) {
dispatcher.fire('time.update', value);
// repaint();
});
totalTime.onChange.do(function(value, done) {
totalTimeStore.value = value;
// repaint();
});
// Play Controls
top.appendChild(currentTime.dom);
top.appendChild(document.createTextNode('/')); // 0:00:00 / 0:10:00
top.appendChild(totalTime.dom)
top.appendChild(play_button.dom);
top.appendChild(stop_button.dom);
top.appendChild(range);
var operations_div = document.createElement('div');
style(operations_div, {
marginTop: '4px',
// borderBottom: '1px solid ' + Theme.b
});
top.appendChild(operations_div);
// top.appendChild(document.createElement('br'));
// open _alt
var file_open = new IconButton(16, 'folder_open_alt', 'Open', dispatcher);
operations_div.appendChild(file_open.dom);
function populateOpen() {
while (dropdown.length) {
dropdown.remove(0);
}
var option;
option = document.createElement('option');
option.text = 'New';
option.value = '*new*';
dropdown.add(option);
option = document.createElement('option');
option.text = 'Import JSON';
option.value = '*import*';
dropdown.add(option);
// Doesn't work
// option = document.createElement('option');
// option.text = 'Select File';
// option.value = '*select*';
// dropdown.add(option);
option = document.createElement('option');
option.text = '==Open==';
option.disabled = true;
option.selected = true;
dropdown.add(option);
var regex = new RegExp(STORAGE_PREFIX + '(.*)');
for (var key in localStorage) {
// console.log(key);
var match = regex.exec(key);
if (match) {
option = document.createElement('option');
option.text = match[1];
dropdown.add(option);
}
}
}
// listen on other tabs
window.addEventListener('storage', function(e) {
var regex = new RegExp(STORAGE_PREFIX + '(.*)');
if (regex.exec(e.key)) {
populateOpen();
}
});
dispatcher.on('save:done', populateOpen);
var dropdown = document.createElement('select');
style(dropdown, {
position: 'absolute',
// right: 0,
// margin: 0,
opacity: 0,
width: '16px',
height: '16px',
// zIndex: 1,
});
dropdown.addEventListener('change', function(e) {
// console.log('changed', dropdown.length, dropdown.value);
switch (dropdown.value) {
case '*new*':
dispatcher.fire('new');
break;
case '*import*':
dispatcher.fire('import');
break;
case '*select*':
dispatcher.fire('openfile');
break;
default:
dispatcher.fire('open', dropdown.value);
break;
}
});
file_open.dom.insertBefore(dropdown, file_open.dom.firstChild);
populateOpen();
// // json import
// var import_json = new IconButton(16, 'signin', 'Import JSON', dispatcher);
// operations_div.appendChild(import_json.dom);
// import_json.onClick(function() {
// dispatcher.fire('import');
// });
// // new
// var file_alt = new IconButton(16, 'file_alt', 'New', dispatcher);
// operations_div.appendChild(file_alt.dom);
// save
var save = new IconButton(16, 'save', 'Save', dispatcher);
operations_div.appendChild(save.dom);
save.onClick(function() {
dispatcher.fire('save');
});
// save as
var save_as = new IconButton(16, 'paste', 'Save as', dispatcher);
operations_div.appendChild(save_as.dom);
save_as.onClick(function() {
dispatcher.fire('save_as');
});
// download json (export)
var download_alt = new IconButton(16, 'download_alt', 'Download / Export JSON to file', dispatcher);
operations_div.appendChild(download_alt.dom);
download_alt.onClick(function() {
dispatcher.fire('export');
});
var upload_alt = new IconButton(16, 'upload_alt', 'Load from file', dispatcher);
operations_div.appendChild(upload_alt.dom);
upload_alt.onClick(function() {
dispatcher.fire('openfile');
});
var span = document.createElement('span');
span.style.width = '20px';
span.style.display = 'inline-block';
operations_div.appendChild(span);
operations_div.appendChild(undo_button.dom);
operations_div.appendChild(redo_button.dom);
operations_div.appendChild(document.createElement('br'));
// Cloud Download / Upload edit pencil
/*
// // show layer
// var eye_open = new IconButton(16, 'eye_open', 'eye_open', dispatcher);
// operations_div.appendChild(eye_open.dom);
// // hide / disable layer
// var eye_close = new IconButton(16, 'eye_close', 'eye_close', dispatcher);
// operations_div.appendChild(eye_close.dom);
// remove layer
var minus = new IconButton(16, 'minus', 'minus', dispatcher);
operations_div.appendChild(minus.dom);
// check
var ok = new IconButton(16, 'ok', 'ok', dispatcher);
operations_div.appendChild(ok.dom);
// cross
var remove = new IconButton(16, 'remove', 'remove', dispatcher);
operations_div.appendChild(remove.dom);
*/
// range.addEventListener('change', changeRange);
function changeRange() {
// var v = range.max - range.value;
var v = range.value;
dispatcher.fire('update.scale', v);
}
var layer_uis = [], visible_layers = 0;
var unused_layers = [];
this.layers = layer_uis;
this.setControlStatus = function(v) {
playing = v;
if (playing) {
play_button.setIcon('pause');
play_button.setTip('pause');
}
else {
play_button.setIcon('play');
play_button.setTip('play');
}
};
this.setState = function(state) {
layer_store = state;
layers = layer_store.value;
// layers = state;
console.log(layer_uis.length, layers);
var i, layer;
for (i = 0; i < layers.length; i++) {
layer = layers[i];
if (!layer_uis[i]) {
var layer_ui;
if (unused_layers.length) {
layer_ui = unused_layers.pop();
layer_ui.dom.style.display = 'block';
} else {
// new
layer_ui = new LayerUI(layer, dispatcher);
layer_scroll.appendChild(layer_ui.dom);
}
layer_uis.push(layer_ui);
}
// layer_uis[i].setState(layer);
}
console.log('Total layers (view, hidden, total)', layer_uis.length, unused_layers.length,
layer_uis.length + unused_layers.length);
};
function repaint(s) {
s = currentTimeStore.value;
currentTime.setValue(s);
totalTime.setValue(totalTimeStore.value);
currentTime.paint();
totalTime.paint();
var i;
s = s || 0;
for (i = layer_uis.length; i-- > 0;) {
// quick hack
if (i >= layers.length) {
layer_uis[i].dom.style.display = 'none';