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2194 lines
67 KiB
JavaScript
2194 lines
67 KiB
JavaScript
/*! p5.dom.js v0.3.1 Jan 3, 2017 */
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/**
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* <p>The web is much more than just canvas and p5.dom makes it easy to interact
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* with other HTML5 objects, including text, hyperlink, image, input, video,
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* audio, and webcam.</p>
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* <p>There is a set of creation methods, DOM manipulation methods, and
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* an extended p5.Element that supports a range of HTML elements. See the
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* <a href="https://github.com/processing/p5.js/wiki/Beyond-the-canvas">
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* beyond the canvas tutorial</a> for a full overview of how this addon works.
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*
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* <p>Methods and properties shown in black are part of the p5.js core, items in
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* blue are part of the p5.dom library. You will need to include an extra file
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* in order to access the blue functions. See the
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* <a href="http://p5js.org/libraries/#using-a-library">using a library</a>
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* section for information on how to include this library. p5.dom comes with
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* <a href="http://p5js.org/download">p5 complete</a> or you can download the single file
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* <a href="https://raw.githubusercontent.com/lmccart/p5.js/master/lib/addons/p5.dom.js">
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* here</a>.</p>
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* <p>See <a href="https://github.com/processing/p5.js/wiki/Beyond-the-canvas">tutorial: beyond the canvas</a>
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* for more info on how to use this libary.</a>
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*
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* @module p5.dom
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* @submodule p5.dom
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* @for p5.dom
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* @main
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*/
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(function (root, factory) {
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if (typeof define === 'function' && define.amd)
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define('p5.dom', ['p5'], function (p5) { (factory(p5));});
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else if (typeof exports === 'object')
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factory(require('../p5'));
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else
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factory(root['p5']);
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}(this, function (p5) {
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// =============================================================================
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// p5 additions
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// =============================================================================
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/**
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* Searches the page for an element with the given ID, class, or tag name (using the '#' or '.'
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* prefixes to specify an ID or class respectively, and none for a tag) and returns it as
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* a p5.Element. If a class or tag name is given with more than 1 element,
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* only the first element will be returned.
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* The DOM node itself can be accessed with .elt.
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* Returns null if none found. You can also specify a container to search within.
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*
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* @method select
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* @param {String} name id, class, or tag name of element to search for
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* @param {String} [container] id, p5.Element, or HTML element to search within
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* @return {Object/p5.Element|Null} p5.Element containing node found
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* @example
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* <div ><code class='norender'>
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* function setup() {
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* createCanvas(100,100);
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* //translates canvas 50px down
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* select('canvas').position(100, 100);
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* }
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* </code></div>
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* <div ><code class='norender'>
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* // these are all valid calls to select()
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* var a = select('#moo');
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* var b = select('#blah', '#myContainer');
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* var c = select('#foo', b);
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* var d = document.getElementById('beep');
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* var e = select('p', d);
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* </code></div>
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*
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*/
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p5.prototype.select = function (e, p) {
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var res = null;
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var container = getContainer(p);
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if (e[0] === '.'){
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e = e.slice(1);
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res = container.getElementsByClassName(e);
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if (res.length) {
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res = res[0];
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} else {
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res = null;
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}
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}else if (e[0] === '#'){
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e = e.slice(1);
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res = container.getElementById(e);
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}else {
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res = container.getElementsByTagName(e);
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if (res.length) {
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res = res[0];
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} else {
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res = null;
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}
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}
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if (res) {
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return wrapElement(res);
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} else {
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return null;
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}
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};
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/**
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* Searches the page for elements with the given class or tag name (using the '.' prefix
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* to specify a class and no prefix for a tag) and returns them as p5.Elements
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* in an array.
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* The DOM node itself can be accessed with .elt.
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* Returns an empty array if none found.
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* You can also specify a container to search within.
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*
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* @method selectAll
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* @param {String} name class or tag name of elements to search for
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* @param {String} [container] id, p5.Element, or HTML element to search within
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* @return {Array} Array of p5.Elements containing nodes found
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* @example
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* <div class='norender'><code>
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* function setup() {
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* createButton('btn');
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* createButton('2nd btn');
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* createButton('3rd btn');
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* var buttons = selectAll('button');
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*
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* for (var i = 0; i < buttons.length; i++){
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* buttons[i].size(100,100);
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* }
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* }
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* </code></div>
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* <div class='norender'><code>
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* // these are all valid calls to selectAll()
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* var a = selectAll('.moo');
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* var b = selectAll('div');
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* var c = selectAll('button', '#myContainer');
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* var d = select('#container');
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* var e = selectAll('p', d);
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* var f = document.getElementById('beep');
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* var g = select('.blah', f);
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* </code></div>
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*
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*/
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p5.prototype.selectAll = function (e, p) {
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var arr = [];
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var res;
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var container = getContainer(p);
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if (e[0] === '.'){
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e = e.slice(1);
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res = container.getElementsByClassName(e);
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} else {
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res = container.getElementsByTagName(e);
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}
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if (res) {
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for (var j = 0; j < res.length; j++) {
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var obj = wrapElement(res[j]);
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arr.push(obj);
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}
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}
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return arr;
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};
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/**
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* Helper function for select and selectAll
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*/
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function getContainer(p) {
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var container = document;
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if (typeof p === 'string' && p[0] === '#'){
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p = p.slice(1);
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container = document.getElementById(p) || document;
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} else if (p instanceof p5.Element){
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container = p.elt;
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} else if (p instanceof HTMLElement){
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container = p;
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}
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return container;
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}
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/**
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* Helper function for getElement and getElements.
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*/
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function wrapElement(elt) {
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if(elt.tagName === "INPUT" && elt.type === "checkbox") {
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var converted = new p5.Element(elt);
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converted.checked = function(){
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if (arguments.length === 0){
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return this.elt.checked;
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} else if(arguments[0]) {
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this.elt.checked = true;
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} else {
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this.elt.checked = false;
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}
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return this;
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};
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return converted;
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} else if (elt.tagName === "VIDEO" || elt.tagName === "AUDIO") {
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return new p5.MediaElement(elt);
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} else {
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return new p5.Element(elt);
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}
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}
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/**
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* Removes all elements created by p5, except any canvas / graphics
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* elements created by createCanvas or createGraphics.
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* Event handlers are removed, and element is removed from the DOM.
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* @method removeElements
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* @example
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* <div class='norender'><code>
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* function setup() {
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* createCanvas(100, 100);
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* createDiv('this is some text');
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* createP('this is a paragraph');
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* }
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* function mousePressed() {
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* removeElements(); // this will remove the div and p, not canvas
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* }
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* </code></div>
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*
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*/
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p5.prototype.removeElements = function (e) {
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for (var i=0; i<this._elements.length; i++) {
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if (!(this._elements[i].elt instanceof HTMLCanvasElement)) {
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this._elements[i].remove();
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}
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}
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};
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/**
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* Helpers for create methods.
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*/
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function addElement(elt, pInst, media) {
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var node = pInst._userNode ? pInst._userNode : document.body;
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node.appendChild(elt);
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var c = media ? new p5.MediaElement(elt) : new p5.Element(elt);
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pInst._elements.push(c);
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return c;
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}
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/**
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* Creates a <div></div> element in the DOM with given inner HTML.
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* Appends to the container node if one is specified, otherwise
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* appends to body.
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*
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* @method createDiv
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* @param {String} html inner HTML for element created
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* @return {Object/p5.Element} pointer to p5.Element holding created node
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* @example
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* <div class='norender'><code>
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* var myDiv;
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* function setup() {
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* myDiv = createDiv('this is some text');
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* }
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* </code></div>
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*/
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/**
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* Creates a <p></p> element in the DOM with given inner HTML. Used
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* for paragraph length text.
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* Appends to the container node if one is specified, otherwise
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* appends to body.
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*
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* @method createP
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* @param {String} html inner HTML for element created
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* @return {Object/p5.Element} pointer to p5.Element holding created node
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* @example
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* <div class='norender'><code>
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* var myP;
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* function setup() {
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* myP = createP('this is some text');
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* }
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* </code></div>
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*/
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/**
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* Creates a <span></span> element in the DOM with given inner HTML.
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* Appends to the container node if one is specified, otherwise
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* appends to body.
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*
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* @method createSpan
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* @param {String} html inner HTML for element created
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* @return {Object/p5.Element} pointer to p5.Element holding created node
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* @example
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* <div class='norender'><code>
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* var mySpan;
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* function setup() {
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* mySpan = createSpan('this is some text');
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* }
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* </code></div>
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*/
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var tags = ['div', 'p', 'span'];
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tags.forEach(function(tag) {
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var method = 'create' + tag.charAt(0).toUpperCase() + tag.slice(1);
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p5.prototype[method] = function(html) {
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var elt = document.createElement(tag);
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elt.innerHTML = typeof html === undefined ? "" : html;
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return addElement(elt, this);
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}
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});
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/**
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* Creates an <img> element in the DOM with given src and
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* alternate text.
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* Appends to the container node if one is specified, otherwise
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* appends to body.
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*
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* @method createImg
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* @param {String} src src path or url for image
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* @param {String} [alt] alternate text to be used if image does not load
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* @param {Function} [successCallback] callback to be called once image data is loaded
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* @return {Object/p5.Element} pointer to p5.Element holding created node
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* @example
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* <div class='norender'><code>
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* var img;
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* function setup() {
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* img = createImg('http://p5js.org/img/asterisk-01.png');
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* }
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* </code></div>
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*/
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p5.prototype.createImg = function() {
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var elt = document.createElement('img');
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var args = arguments;
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var self;
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var setAttrs = function(){
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self.width = elt.offsetWidth || elt.width;
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self.height = elt.offsetHeight || elt.height;
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if (args.length > 1 && typeof args[1] === 'function'){
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self.fn = args[1];
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self.fn();
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}else if (args.length > 1 && typeof args[2] === 'function'){
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self.fn = args[2];
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self.fn();
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}
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};
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elt.src = args[0];
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if (args.length > 1 && typeof args[1] === 'string'){
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elt.alt = args[1];
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}
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elt.onload = function(){
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setAttrs();
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}
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self = addElement(elt, this);
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return self;
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};
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/**
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* Creates an <a></a> element in the DOM for including a hyperlink.
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* Appends to the container node if one is specified, otherwise
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* appends to body.
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*
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* @method createA
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* @param {String} href url of page to link to
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* @param {String} html inner html of link element to display
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* @param {String} [target] target where new link should open,
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* could be _blank, _self, _parent, _top.
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* @return {Object/p5.Element} pointer to p5.Element holding created node
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* @example
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* <div class='norender'><code>
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* var myLink;
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* function setup() {
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* myLink = createA('http://p5js.org/', 'this is a link');
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* }
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* </code></div>
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*/
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p5.prototype.createA = function(href, html, target) {
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var elt = document.createElement('a');
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elt.href = href;
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elt.innerHTML = html;
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if (target) elt.target = target;
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return addElement(elt, this);
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};
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/** INPUT **/
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/**
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* Creates a slider <input></input> element in the DOM.
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* Use .size() to set the display length of the slider.
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* Appends to the container node if one is specified, otherwise
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* appends to body.
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*
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* @method createSlider
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* @param {Number} min minimum value of the slider
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* @param {Number} max maximum value of the slider
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* @param {Number} [value] default value of the slider
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* @param {Number} [step] step size for each tick of the slider (if step is set to 0, the slider will move continuously from the minimum to the maximum value)
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* @return {Object/p5.Element} pointer to p5.Element holding created node
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* @example
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* <div><code>
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* var slider;
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* function setup() {
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* slider = createSlider(0, 255, 100);
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* slider.position(10, 10);
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* slider.style('width', '80px');
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* }
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*
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* function draw() {
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* var val = slider.value();
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* background(val);
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* }
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* </code></div>
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*
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* <div><code>
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* var slider;
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* function setup() {
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* colorMode(HSB);
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* slider = createSlider(0, 360, 60, 40);
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* slider.position(10, 10);
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* slider.style('width', '80px');
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* }
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*
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* function draw() {
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* var val = slider.value();
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* background(val, 100, 100, 1);
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* }
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* </code></div>
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*/
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p5.prototype.createSlider = function(min, max, value, step) {
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var elt = document.createElement('input');
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elt.type = 'range';
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elt.min = min;
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elt.max = max;
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if (step === 0) {
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elt.step = .000000000000000001; // smallest valid step
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} else if (step) {
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elt.step = step;
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}
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if (typeof(value) === "number") elt.value = value;
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return addElement(elt, this);
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};
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/**
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* Creates a <button></button> element in the DOM.
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* Use .size() to set the display size of the button.
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* Use .mousePressed() to specify behavior on press.
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* Appends to the container node if one is specified, otherwise
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* appends to body.
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*
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* @method createButton
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* @param {String} label label displayed on the button
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* @param {String} [value] value of the button
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* @return {Object/p5.Element} pointer to p5.Element holding created node
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* @example
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* <div class='norender'><code>
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* var button;
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* function setup() {
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* createCanvas(100, 100);
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* background(0);
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* button = createButton('click me');
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* button.position(19, 19);
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* button.mousePressed(changeBG);
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* }
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*
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* function changeBG() {
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* var val = random(255);
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* background(val);
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* }
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* </code></div>
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*/
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p5.prototype.createButton = function(label, value) {
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var elt = document.createElement('button');
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elt.innerHTML = label;
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elt.value = value;
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if (value) elt.value = value;
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return addElement(elt, this);
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};
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/**
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* Creates a checkbox <input></input> element in the DOM.
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* Calling .checked() on a checkbox returns if it is checked or not
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|
*
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* @method createCheckbox
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* @param {String} [label] label displayed after checkbox
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* @param {boolean} [value] value of the checkbox; checked is true, unchecked is false.Unchecked if no value given
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* @return {Object/p5.Element} pointer to p5.Element holding created node
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|
* @example
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* <div class='norender'><code>
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* var checkbox;
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*
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* function setup() {
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* checkbox = createCheckbox('label', false);
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* checkbox.changed(myCheckedEvent);
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* }
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*
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* function myCheckedEvent() {
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* if (this.checked()) {
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* console.log("Checking!");
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* } else {
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* console.log("Unchecking!");
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* }
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* }
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* </code></div>
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*/
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p5.prototype.createCheckbox = function() {
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var elt = document.createElement('div');
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var checkbox = document.createElement('input');
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checkbox.type = 'checkbox';
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elt.appendChild(checkbox);
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//checkbox must be wrapped in p5.Element before label so that label appears after
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var self = addElement(elt, this);
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self.checked = function(){
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var cb = self.elt.getElementsByTagName('input')[0];
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if (cb) {
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if (arguments.length === 0){
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return cb.checked;
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}else if(arguments[0]){
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cb.checked = true;
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}else{
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cb.checked = false;
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}
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}
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return self;
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};
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this.value = function(val){
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self.value = val;
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return this;
|
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};
|
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if (arguments[0]){
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var ran = Math.random().toString(36).slice(2);
|
|
var label = document.createElement('label');
|
|
checkbox.setAttribute('id', ran);
|
|
label.htmlFor = ran;
|
|
self.value(arguments[0]);
|
|
label.appendChild(document.createTextNode(arguments[0]));
|
|
elt.appendChild(label);
|
|
}
|
|
if (arguments[1]){
|
|
checkbox.checked = true;
|
|
}
|
|
return self;
|
|
};
|
|
|
|
/**
|
|
* Creates a dropdown menu <select></select> element in the DOM.
|
|
* @method createSelect
|
|
* @param {boolean} [multiple] [true if dropdown should support multiple selections]
|
|
* @return {Object/p5.Element} pointer to p5.Element holding created node
|
|
* @example
|
|
* <div><code>
|
|
* var sel;
|
|
*
|
|
* function setup() {
|
|
* textAlign(CENTER);
|
|
* background(200);
|
|
* sel = createSelect();
|
|
* sel.position(10, 10);
|
|
* sel.option('pear');
|
|
* sel.option('kiwi');
|
|
* sel.option('grape');
|
|
* sel.changed(mySelectEvent);
|
|
* }
|
|
*
|
|
* function mySelectEvent() {
|
|
* var item = sel.value();
|
|
* background(200);
|
|
* text("it's a "+item+"!", 50, 50);
|
|
* }
|
|
* </code></div>
|
|
*/
|
|
p5.prototype.createSelect = function(mult) {
|
|
var elt = document.createElement('select');
|
|
if (mult){
|
|
elt.setAttribute('multiple', 'true');
|
|
}
|
|
var self = addElement(elt, this);
|
|
self.option = function(name, value){
|
|
var opt = document.createElement('option');
|
|
opt.innerHTML = name;
|
|
if (arguments.length > 1)
|
|
opt.value = value;
|
|
else
|
|
opt.value = name;
|
|
elt.appendChild(opt);
|
|
};
|
|
self.selected = function(value){
|
|
var arr = [];
|
|
if (arguments.length > 0){
|
|
for (var i = 0; i < this.elt.length; i++){
|
|
if (value.toString() === this.elt[i].value){
|
|
this.elt.selectedIndex = i;
|
|
}
|
|
}
|
|
return this;
|
|
}else{
|
|
if (mult){
|
|
for (var i = 0; i < this.elt.selectedOptions.length; i++){
|
|
arr.push(this.elt.selectedOptions[i].value);
|
|
}
|
|
return arr;
|
|
}else{
|
|
return this.elt.value;
|
|
}
|
|
}
|
|
};
|
|
return self;
|
|
};
|
|
|
|
/**
|
|
* Creates a radio button <input></input> element in the DOM.
|
|
* The .option() method can be used to set options for the radio after it is
|
|
* created. The .value() method will return the currently selected option.
|
|
*
|
|
* @method createRadio
|
|
* @param {String} [divId] the id and name of the created div and input field respectively
|
|
* @return {Object/p5.Element} pointer to p5.Element holding created node
|
|
* @example
|
|
* <div><code>
|
|
* var radio;
|
|
*
|
|
* function setup() {
|
|
* radio = createRadio();
|
|
* radio.option("black");
|
|
* radio.option("white");
|
|
* radio.option("gray");
|
|
* radio.style('width', '60px');
|
|
* textAlign(CENTER);
|
|
* fill(255, 0, 0);
|
|
* }
|
|
*
|
|
* function draw() {
|
|
* var val = radio.value();
|
|
* background(val);
|
|
* text(val, width/2, height/2);
|
|
* }
|
|
* </code></div>
|
|
* <div><code>
|
|
* var radio;
|
|
*
|
|
* function setup() {
|
|
* radio = createRadio();
|
|
* radio.option('apple', 1);
|
|
* radio.option('bread', 2);
|
|
* radio.option('juice', 3);
|
|
* radio.style('width', '60px');
|
|
* textAlign(CENTER);
|
|
* }
|
|
*
|
|
* function draw() {
|
|
* background(200);
|
|
* var val = radio.value();
|
|
* if (val) {
|
|
* text('item cost is $'+val, width/2, height/2);
|
|
* }
|
|
* }
|
|
* </code></div>
|
|
*/
|
|
p5.prototype.createRadio = function() {
|
|
var radios = document.querySelectorAll("input[type=radio]");
|
|
var count = 0;
|
|
if(radios.length > 1){
|
|
var length = radios.length;
|
|
var prev=radios[0].name;
|
|
var current = radios[1].name;
|
|
count = 1;
|
|
for(var i = 1; i < length; i++) {
|
|
current = radios[i].name;
|
|
if(prev != current){
|
|
count++;
|
|
}
|
|
prev = current;
|
|
}
|
|
}
|
|
else if (radios.length == 1){
|
|
count = 1;
|
|
}
|
|
var elt = document.createElement('div');
|
|
var self = addElement(elt, this);
|
|
var times = -1;
|
|
self.option = function(name, value){
|
|
var opt = document.createElement('input');
|
|
opt.type = 'radio';
|
|
opt.innerHTML = name;
|
|
if (arguments.length > 1)
|
|
opt.value = value;
|
|
else
|
|
opt.value = name;
|
|
opt.setAttribute('name',"defaultradio"+count);
|
|
elt.appendChild(opt);
|
|
if (name){
|
|
times++;
|
|
var ran = Math.random().toString(36).slice(2);
|
|
var label = document.createElement('label');
|
|
opt.setAttribute('id', "defaultradio"+count+"-"+times);
|
|
label.htmlFor = "defaultradio"+count+"-"+times;
|
|
label.appendChild(document.createTextNode(name));
|
|
elt.appendChild(label);
|
|
}
|
|
return opt;
|
|
};
|
|
self.selected = function(){
|
|
var length = this.elt.childNodes.length;
|
|
if(arguments.length == 1) {
|
|
for (var i = 0; i < length; i+=2){
|
|
if(this.elt.childNodes[i].value == arguments[0])
|
|
this.elt.childNodes[i].checked = true;
|
|
}
|
|
return this;
|
|
} else {
|
|
for (var i = 0; i < length; i+=2){
|
|
if(this.elt.childNodes[i].checked == true)
|
|
return this.elt.childNodes[i].value;
|
|
}
|
|
}
|
|
};
|
|
self.value = function(){
|
|
var length = this.elt.childNodes.length;
|
|
if(arguments.length == 1) {
|
|
for (var i = 0; i < length; i+=2){
|
|
if(this.elt.childNodes[i].value == arguments[0])
|
|
this.elt.childNodes[i].checked = true;
|
|
}
|
|
return this;
|
|
} else {
|
|
for (var i = 0; i < length; i+=2){
|
|
if(this.elt.childNodes[i].checked == true)
|
|
return this.elt.childNodes[i].value;
|
|
}
|
|
return "";
|
|
}
|
|
};
|
|
return self
|
|
};
|
|
|
|
/**
|
|
* Creates an <input></input> element in the DOM for text input.
|
|
* Use .size() to set the display length of the box.
|
|
* Appends to the container node if one is specified, otherwise
|
|
* appends to body.
|
|
*
|
|
* @method createInput
|
|
* @param {Number} [value] default value of the input box
|
|
* @param {String} [type] type of text, ie text, password etc. Defaults to text
|
|
* @return {Object/p5.Element} pointer to p5.Element holding created node
|
|
* @example
|
|
* <div class='norender'><code>
|
|
* function setup(){
|
|
* var inp = createInput('');
|
|
* inp.input(myInputEvent);
|
|
* }
|
|
*
|
|
* function myInputEvent(){
|
|
* console.log('you are typing: ', this.value());
|
|
* }
|
|
*
|
|
* </code></div>
|
|
*/
|
|
p5.prototype.createInput = function(value, type) {
|
|
var elt = document.createElement('input');
|
|
elt.type = type ? type : 'text';
|
|
if (value) elt.value = value;
|
|
return addElement(elt, this);
|
|
};
|
|
|
|
/**
|
|
* Creates an <input></input> element in the DOM of type 'file'.
|
|
* This allows users to select local files for use in a sketch.
|
|
*
|
|
* @method createFileInput
|
|
* @param {Function} [callback] callback function for when a file loaded
|
|
* @param {String} [multiple] optional to allow multiple files selected
|
|
* @return {Object/p5.Element} pointer to p5.Element holding created DOM element
|
|
* @example
|
|
* var input;
|
|
* var img;
|
|
*
|
|
* function setup() {
|
|
* input = createFileInput(handleFile);
|
|
* input.position(0, 0);
|
|
* }
|
|
*
|
|
* function draw() {
|
|
* if (img) {
|
|
* image(img, 0, 0, width, height);
|
|
* }
|
|
* }
|
|
*
|
|
* function handleFile(file) {
|
|
* print(file);
|
|
* if (file.type === 'image') {
|
|
* img = createImg(file.data);
|
|
* img.hide();
|
|
* }
|
|
* }
|
|
*/
|
|
p5.prototype.createFileInput = function(callback, multiple) {
|
|
|
|
// Is the file stuff supported?
|
|
if (window.File && window.FileReader && window.FileList && window.Blob) {
|
|
// Yup, we're ok and make an input file selector
|
|
var elt = document.createElement('input');
|
|
elt.type = 'file';
|
|
|
|
// If we get a second argument that evaluates to true
|
|
// then we are looking for multiple files
|
|
if (multiple) {
|
|
// Anything gets the job done
|
|
elt.multiple = 'multiple';
|
|
}
|
|
|
|
// Function to handle when a file is selected
|
|
// We're simplifying life and assuming that we always
|
|
// want to load every selected file
|
|
function handleFileSelect(evt) {
|
|
// These are the files
|
|
var files = evt.target.files;
|
|
// Load each one and trigger a callback
|
|
for (var i = 0; i < files.length; i++) {
|
|
var f = files[i];
|
|
var reader = new FileReader();
|
|
function makeLoader(theFile) {
|
|
// Making a p5.File object
|
|
var p5file = new p5.File(theFile);
|
|
return function(e) {
|
|
p5file.data = e.target.result;
|
|
callback(p5file);
|
|
};
|
|
};
|
|
reader.onload = makeLoader(f);
|
|
|
|
// Text or data?
|
|
// This should likely be improved
|
|
if (f.type.indexOf('text') > -1) {
|
|
reader.readAsText(f);
|
|
} else {
|
|
reader.readAsDataURL(f);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Now let's handle when a file was selected
|
|
elt.addEventListener('change', handleFileSelect, false);
|
|
return addElement(elt, this);
|
|
} else {
|
|
console.log('The File APIs are not fully supported in this browser. Cannot create element.');
|
|
}
|
|
};
|
|
|
|
|
|
/** VIDEO STUFF **/
|
|
|
|
function createMedia(pInst, type, src, callback) {
|
|
var elt = document.createElement(type);
|
|
|
|
// allow src to be empty
|
|
var src = src || '';
|
|
if (typeof src === 'string') {
|
|
src = [src];
|
|
}
|
|
for (var i=0; i<src.length; i++) {
|
|
var source = document.createElement('source');
|
|
source.src = src[i];
|
|
elt.appendChild(source);
|
|
}
|
|
if (typeof callback !== 'undefined') {
|
|
var callbackHandler = function() {
|
|
callback();
|
|
elt.removeEventListener('canplaythrough', callbackHandler);
|
|
}
|
|
elt.addEventListener('canplaythrough', callbackHandler);
|
|
}
|
|
|
|
var c = addElement(elt, pInst, true);
|
|
c.loadedmetadata = false;
|
|
// set width and height onload metadata
|
|
elt.addEventListener('loadedmetadata', function() {
|
|
c.width = elt.videoWidth;
|
|
c.height = elt.videoHeight;
|
|
// set elt width and height if not set
|
|
if (c.elt.width === 0) c.elt.width = elt.videoWidth;
|
|
if (c.elt.height === 0) c.elt.height = elt.videoHeight;
|
|
c.loadedmetadata = true;
|
|
});
|
|
|
|
return c;
|
|
}
|
|
/**
|
|
* Creates an HTML5 <video> element in the DOM for simple playback
|
|
* of audio/video. Shown by default, can be hidden with .hide()
|
|
* and drawn into canvas using video(). Appends to the container
|
|
* node if one is specified, otherwise appends to body. The first parameter
|
|
* can be either a single string path to a video file, or an array of string
|
|
* paths to different formats of the same video. This is useful for ensuring
|
|
* that your video can play across different browsers, as each supports
|
|
* different formats. See <a href="https://developer.mozilla.org/en-US/docs/Web/HTML/Supported_media_formats">this
|
|
* page</a> for further information about supported formats.
|
|
*
|
|
* @method createVideo
|
|
* @param {String|Array} src path to a video file, or array of paths for
|
|
* supporting different browsers
|
|
* @param {Object} [callback] callback function to be called upon
|
|
* 'canplaythrough' event fire, that is, when the
|
|
* browser can play the media, and estimates that
|
|
* enough data has been loaded to play the media
|
|
* up to its end without having to stop for
|
|
* further buffering of content
|
|
* @return {Object/p5.Element} pointer to video p5.Element
|
|
*/
|
|
p5.prototype.createVideo = function(src, callback) {
|
|
return createMedia(this, 'video', src, callback);
|
|
};
|
|
|
|
/** AUDIO STUFF **/
|
|
|
|
/**
|
|
* Creates a hidden HTML5 <audio> element in the DOM for simple audio
|
|
* playback. Appends to the container node if one is specified,
|
|
* otherwise appends to body. The first parameter
|
|
* can be either a single string path to a audio file, or an array of string
|
|
* paths to different formats of the same audio. This is useful for ensuring
|
|
* that your audio can play across different browsers, as each supports
|
|
* different formats. See <a href="https://developer.mozilla.org/en-US/docs/Web/HTML/Supported_media_formats">this
|
|
* page for further information about supported formats</a>.
|
|
*
|
|
* @method createAudio
|
|
* @param {String|Array} src path to an audio file, or array of paths for
|
|
* supporting different browsers
|
|
* @param {Object} [callback] callback function to be called upon
|
|
* 'canplaythrough' event fire, that is, when the
|
|
* browser can play the media, and estimates that
|
|
* enough data has been loaded to play the media
|
|
* up to its end without having to stop for
|
|
* further buffering of content
|
|
* @return {Object/p5.Element} pointer to audio p5.Element
|
|
*/
|
|
p5.prototype.createAudio = function(src, callback) {
|
|
return createMedia(this, 'audio', src, callback);
|
|
};
|
|
|
|
|
|
/** CAMERA STUFF **/
|
|
|
|
p5.prototype.VIDEO = 'video';
|
|
p5.prototype.AUDIO = 'audio';
|
|
|
|
navigator.getUserMedia = navigator.getUserMedia ||
|
|
navigator.webkitGetUserMedia ||
|
|
navigator.mozGetUserMedia ||
|
|
navigator.msGetUserMedia;
|
|
|
|
/**
|
|
* <p>Creates a new <video> element that contains the audio/video feed
|
|
* from a webcam. This can be drawn onto the canvas using video().</p>
|
|
* <p>More specific properties of the feed can be passing in a Constraints object.
|
|
* See the
|
|
* <a href="http://w3c.github.io/mediacapture-main/getusermedia.html#media-track-constraints"> W3C
|
|
* spec</a> for possible properties. Note that not all of these are supported
|
|
* by all browsers.</p>
|
|
* <p>Security note: A new browser security specification requires that getUserMedia,
|
|
* which is behind createCapture(), only works when you're running the code locally,
|
|
* or on HTTPS. Learn more <a href="http://stackoverflow.com/questions/34197653/getusermedia-in-chrome-47-without-using-https">here</a>
|
|
* and <a href="https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getUserMedia">here</a>.</p>
|
|
*
|
|
* @method createCapture
|
|
* @param {String|Constant|Object} type type of capture, either VIDEO or
|
|
* AUDIO if none specified, default both,
|
|
* or a Constraints object
|
|
* @param {Function} callback function to be called once
|
|
* stream has loaded
|
|
* @return {Object/p5.Element} capture video p5.Element
|
|
* @example
|
|
* <div class='norender'><code>
|
|
* var capture;
|
|
*
|
|
* function setup() {
|
|
* createCanvas(480, 120);
|
|
* capture = createCapture(VIDEO);
|
|
* }
|
|
*
|
|
* function draw() {
|
|
* image(capture, 0, 0, width, width*capture.height/capture.width);
|
|
* filter(INVERT);
|
|
* }
|
|
* </code></div>
|
|
* <div class='norender'><code>
|
|
* function setup() {
|
|
* createCanvas(480, 120);
|
|
* var constraints = {
|
|
* video: {
|
|
* mandatory: {
|
|
* minWidth: 1280,
|
|
* minHeight: 720
|
|
* },
|
|
* optional: [
|
|
* { maxFrameRate: 10 }
|
|
* ]
|
|
* },
|
|
* audio: true
|
|
* };
|
|
* createCapture(constraints, function(stream) {
|
|
* console.log(stream);
|
|
* });
|
|
* }
|
|
* </code></div>
|
|
*/
|
|
p5.prototype.createCapture = function() {
|
|
var useVideo = true;
|
|
var useAudio = true;
|
|
var constraints;
|
|
var cb;
|
|
for (var i=0; i<arguments.length; i++) {
|
|
if (arguments[i] === p5.prototype.VIDEO) {
|
|
useAudio = false;
|
|
} else if (arguments[i] === p5.prototype.AUDIO) {
|
|
useVideo = false;
|
|
} else if (typeof arguments[i] === 'object') {
|
|
constraints = arguments[i];
|
|
} else if (typeof arguments[i] === 'function') {
|
|
cb = arguments[i];
|
|
}
|
|
}
|
|
|
|
if (navigator.getUserMedia) {
|
|
var elt = document.createElement('video');
|
|
|
|
if (!constraints) {
|
|
constraints = {video: useVideo, audio: useAudio};
|
|
}
|
|
|
|
navigator.getUserMedia(constraints, function(stream) {
|
|
elt.src = window.URL.createObjectURL(stream);
|
|
if (cb) {
|
|
cb(stream);
|
|
}
|
|
}, function(e) { console.log(e); });
|
|
} else {
|
|
throw 'getUserMedia not supported in this browser';
|
|
}
|
|
var c = addElement(elt, this, true);
|
|
c.loadedmetadata = false;
|
|
// set width and height onload metadata
|
|
elt.addEventListener('loadedmetadata', function() {
|
|
elt.play();
|
|
if (elt.width) {
|
|
c.width = elt.videoWidth = elt.width;
|
|
c.height = elt.videoHeight = elt.height;
|
|
} else {
|
|
c.width = c.elt.width = elt.videoWidth;
|
|
c.height = c.elt.height = elt.videoHeight;
|
|
}
|
|
c.loadedmetadata = true;
|
|
});
|
|
return c;
|
|
};
|
|
|
|
/**
|
|
* Creates element with given tag in the DOM with given content.
|
|
* Appends to the container node if one is specified, otherwise
|
|
* appends to body.
|
|
*
|
|
* @method createElement
|
|
* @param {String} tag tag for the new element
|
|
* @param {String} [content] html content to be inserted into the element
|
|
* @return {Object/p5.Element} pointer to p5.Element holding created node
|
|
* @example
|
|
* <div class='norender'><code>
|
|
* var h2 = createElement('h2','im an h2 p5.element!');
|
|
* </code></div>
|
|
*/
|
|
p5.prototype.createElement = function(tag, content) {
|
|
var elt = document.createElement(tag);
|
|
if (typeof content !== 'undefined') {
|
|
elt.innerHTML = content;
|
|
}
|
|
return addElement(elt, this);
|
|
};
|
|
|
|
|
|
// =============================================================================
|
|
// p5.Element additions
|
|
// =============================================================================
|
|
/**
|
|
*
|
|
* Adds specified class to the element.
|
|
*
|
|
* @for p5.Element
|
|
* @method addClass
|
|
* @param {String} class name of class to add
|
|
* @return {Object/p5.Element}
|
|
* @example
|
|
* <div class='norender'><code>
|
|
* var div = createDiv('div');
|
|
* div.addClass('myClass');
|
|
* </code></div>
|
|
*/
|
|
p5.Element.prototype.addClass = function(c) {
|
|
if (this.elt.className) {
|
|
// PEND don't add class more than once
|
|
//var regex = new RegExp('[^a-zA-Z\d:]?'+c+'[^a-zA-Z\d:]?');
|
|
//if (this.elt.className.search(/[^a-zA-Z\d:]?hi[^a-zA-Z\d:]?/) === -1) {
|
|
this.elt.className = this.elt.className+' '+c;
|
|
//}
|
|
} else {
|
|
this.elt.className = c;
|
|
}
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* Removes specified class from the element.
|
|
*
|
|
* @method removeClass
|
|
* @param {String} class name of class to remove
|
|
* @return {Object/p5.Element}
|
|
*/
|
|
p5.Element.prototype.removeClass = function(c) {
|
|
var regex = new RegExp('(?:^|\\s)'+c+'(?!\\S)');
|
|
this.elt.className = this.elt.className.replace(regex, '');
|
|
this.elt.className = this.elt.className.replace(/^\s+|\s+$/g, ""); //prettify (optional)
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* Attaches the element as a child to the parent specified.
|
|
* Accepts either a string ID, DOM node, or p5.Element.
|
|
* If no argument is specified, an array of children DOM nodes is returned.
|
|
*
|
|
* @method child
|
|
* @param {String|Object|p5.Element} [child] the ID, DOM node, or p5.Element
|
|
* to add to the current element
|
|
* @return {p5.Element}
|
|
* @example
|
|
* <div class='norender'><code>
|
|
* var div0 = createDiv('this is the parent');
|
|
* var div1 = createDiv('this is the child');
|
|
* div0.child(div1); // use p5.Element
|
|
* </code></div>
|
|
* <div class='norender'><code>
|
|
* var div0 = createDiv('this is the parent');
|
|
* var div1 = createDiv('this is the child');
|
|
* div1.id('apples');
|
|
* div0.child('apples'); // use id
|
|
* </code></div>
|
|
* <div class='norender'><code>
|
|
* var div0 = createDiv('this is the parent');
|
|
* var elt = document.getElementById('myChildDiv');
|
|
* div0.child(elt); // use element from page
|
|
* </code></div>
|
|
*/
|
|
p5.Element.prototype.child = function(c) {
|
|
if (typeof c === 'undefined'){
|
|
return this.elt.childNodes
|
|
}
|
|
if (typeof c === 'string') {
|
|
if (c[0] === '#') {
|
|
c = c.substring(1);
|
|
}
|
|
c = document.getElementById(c);
|
|
} else if (c instanceof p5.Element) {
|
|
c = c.elt;
|
|
}
|
|
this.elt.appendChild(c);
|
|
return this;
|
|
};
|
|
|
|
/**
|
|
* Centers a p5 Element either vertically, horizontally,
|
|
* or both, relative to its parent or according to
|
|
* the body if the Element has no parent. If no argument is passed
|
|
* the Element is aligned both vertically and horizontally.
|
|
*
|
|
* @param {String} align passing 'vertical', 'horizontal' aligns element accordingly
|
|
* @return {Object/p5.Element} pointer to p5.Element
|
|
* @example
|
|
* <div><code>
|
|
* function setup() {
|
|
* var div = createDiv('').size(10,10);
|
|
* div.style('background-color','orange');
|
|
* div.center();
|
|
*
|
|
* }
|
|
* </code></div>
|
|
*/
|
|
p5.Element.prototype.center = function(align) {
|
|
var style = this.elt.style.display;
|
|
var hidden = this.elt.style.display === 'none';
|
|
var parentHidden = this.parent().style.display === 'none';
|
|
var pos = { x : this.elt.offsetLeft, y : this.elt.offsetTop };
|
|
|
|
if (hidden) this.show();
|
|
|
|
this.elt.style.display = 'block';
|
|
this.position(0,0);
|
|
|
|
if (parentHidden) this.parent().style.display = 'block';
|
|
|
|
var wOffset = Math.abs(this.parent().offsetWidth - this.elt.offsetWidth);
|
|
var hOffset = Math.abs(this.parent().offsetHeight - this.elt.offsetHeight);
|
|
var y = pos.y;
|
|
var x = pos.x;
|
|
|
|
if (align === 'both' || align === undefined){
|
|
this.position(wOffset/2, hOffset/2);
|
|
}else if (align === 'horizontal'){
|
|
this.position(wOffset/2, y);
|
|
}else if (align === 'vertical'){
|
|
this.position(x, hOffset/2);
|
|
}
|
|
|
|
this.style('display', style);
|
|
|
|
if (hidden) this.hide();
|
|
|
|
if (parentHidden) this.parent().style.display = 'none';
|
|
|
|
return this;
|
|
};
|
|
|
|
/**
|
|
*
|
|
* If an argument is given, sets the inner HTML of the element,
|
|
* replacing any existing html. If true is included as a second
|
|
* argument, html is appended instead of replacing existing html.
|
|
* If no arguments are given, returns
|
|
* the inner HTML of the element.
|
|
*
|
|
* @for p5.Element
|
|
* @method html
|
|
* @param {String} [html] the HTML to be placed inside the element
|
|
* @param {boolean} [append] whether to append HTML to existing
|
|
* @return {Object/p5.Element|String}
|
|
* @example
|
|
* <div class='norender'><code>
|
|
* var div = createDiv('').size(100,100);
|
|
* div.html('hi');
|
|
* </code></div>
|
|
* <div class='norender'><code>
|
|
* var div = createDiv('Hello ').size(100,100);
|
|
* div.html('World', true);
|
|
* </code></div>
|
|
*/
|
|
p5.Element.prototype.html = function() {
|
|
if (arguments.length === 0) {
|
|
return this.elt.innerHTML;
|
|
} else if (arguments[1]) {
|
|
this.elt.innerHTML += arguments[0];
|
|
return this;
|
|
} else {
|
|
this.elt.innerHTML = arguments[0];
|
|
return this;
|
|
}
|
|
};
|
|
|
|
/**
|
|
*
|
|
* Sets the position of the element relative to (0, 0) of the
|
|
* window. Essentially, sets position:absolute and left and top
|
|
* properties of style. If no arguments given returns the x and y position
|
|
* of the element in an object.
|
|
*
|
|
* @method position
|
|
* @param {Number} [x] x-position relative to upper left of window
|
|
* @param {Number} [y] y-position relative to upper left of window
|
|
* @return {Object/p5.Element}
|
|
* @example
|
|
* <div><code class='norender'>
|
|
* function setup() {
|
|
* var cnv = createCanvas(100, 100);
|
|
* // positions canvas 50px to the right and 100px
|
|
* // below upper left corner of the window
|
|
* cnv.position(50, 100);
|
|
* }
|
|
* </code></div>
|
|
*/
|
|
p5.Element.prototype.position = function() {
|
|
if (arguments.length === 0){
|
|
return { 'x' : this.elt.offsetLeft , 'y' : this.elt.offsetTop };
|
|
}else{
|
|
this.elt.style.position = 'absolute';
|
|
this.elt.style.left = arguments[0]+'px';
|
|
this.elt.style.top = arguments[1]+'px';
|
|
this.x = arguments[0];
|
|
this.y = arguments[1];
|
|
return this;
|
|
}
|
|
};
|
|
|
|
/* Helper method called by p5.Element.style() */
|
|
p5.Element.prototype._translate = function(){
|
|
this.elt.style.position = 'absolute';
|
|
// save out initial non-translate transform styling
|
|
var transform = '';
|
|
if (this.elt.style.transform) {
|
|
transform = this.elt.style.transform.replace(/translate3d\(.*\)/g, '');
|
|
transform = transform.replace(/translate[X-Z]?\(.*\)/g, '');
|
|
}
|
|
if (arguments.length === 2) {
|
|
this.elt.style.transform = 'translate('+arguments[0]+'px, '+arguments[1]+'px)';
|
|
} else if (arguments.length > 2) {
|
|
this.elt.style.transform = 'translate3d('+arguments[0]+'px,'+arguments[1]+'px,'+arguments[2]+'px)';
|
|
if (arguments.length === 3) {
|
|
this.elt.parentElement.style.perspective = '1000px';
|
|
} else {
|
|
this.elt.parentElement.style.perspective = arguments[3]+'px';
|
|
}
|
|
}
|
|
// add any extra transform styling back on end
|
|
this.elt.style.transform += transform;
|
|
return this;
|
|
};
|
|
|
|
/* Helper method called by p5.Element.style() */
|
|
p5.Element.prototype._rotate = function(){
|
|
// save out initial non-rotate transform styling
|
|
var transform = '';
|
|
if (this.elt.style.transform) {
|
|
var transform = this.elt.style.transform.replace(/rotate3d\(.*\)/g, '');
|
|
transform = transform.replace(/rotate[X-Z]?\(.*\)/g, '');
|
|
}
|
|
|
|
if (arguments.length === 1){
|
|
this.elt.style.transform = 'rotate('+arguments[0]+'deg)';
|
|
}else if (arguments.length === 2){
|
|
this.elt.style.transform = 'rotate('+arguments[0]+'deg, '+arguments[1]+'deg)';
|
|
}else if (arguments.length === 3){
|
|
this.elt.style.transform = 'rotateX('+arguments[0]+'deg)';
|
|
this.elt.style.transform += 'rotateY('+arguments[1]+'deg)';
|
|
this.elt.style.transform += 'rotateZ('+arguments[2]+'deg)';
|
|
}
|
|
// add remaining transform back on
|
|
this.elt.style.transform += transform;
|
|
return this;
|
|
};
|
|
|
|
/**
|
|
* Sets the given style (css) property (1st arg) of the element with the
|
|
* given value (2nd arg). If a single argument is given, .style()
|
|
* returns the value of the given property; however, if the single argument
|
|
* is given in css syntax ('text-align:center'), .style() sets the css
|
|
* appropriatly. .style() also handles 2d and 3d css transforms. If
|
|
* the 1st arg is 'rotate', 'translate', or 'position', the following arguments
|
|
* accept Numbers as values. ('translate', 10, 100, 50);
|
|
*
|
|
* @method style
|
|
* @param {String} property property to be set
|
|
* @param {String|Number|p5.Color} [value] value to assign to property
|
|
* @param {String|Number} [value] value to assign to property (rotate/translate)
|
|
* @param {String|Number} [value] value to assign to property (rotate/translate)
|
|
* @param {String|Number} [value] value to assign to property (translate)
|
|
* @return {String|Object/p5.Element} value of property, if no value is specified
|
|
* or p5.Element
|
|
* @example
|
|
* <div><code class="norender">
|
|
* var myDiv = createDiv("I like pandas.");
|
|
* myDiv.style("font-size", "18px");
|
|
* myDiv.style("color", "#ff0000");
|
|
* </code></div>
|
|
* <div><code class="norender">
|
|
* var col = color(25,23,200,50);
|
|
* var button = createButton("button");
|
|
* button.style("background-color", col);
|
|
* button.position(10, 10);
|
|
* </code></div>
|
|
* <div><code class="norender">
|
|
* var myDiv = createDiv("I like lizards.");
|
|
* myDiv.style("position", 20, 20);
|
|
* myDiv.style("rotate", 45);
|
|
* </code></div>
|
|
* <div><code class="norender">
|
|
* var myDiv;
|
|
* function setup() {
|
|
* background(200);
|
|
* myDiv = createDiv("I like gray.");
|
|
* myDiv.position(20, 20);
|
|
* }
|
|
*
|
|
* function draw() {
|
|
* myDiv.style("font-size", mouseX+"px");
|
|
* }
|
|
* </code></div>
|
|
*/
|
|
p5.Element.prototype.style = function(prop, val) {
|
|
var self = this;
|
|
|
|
if (val instanceof p5.Color) {
|
|
val = 'rgba(' + val.levels[0] + ',' + val.levels[1] + ',' + val.levels[2] + ',' + val.levels[3]/255 + ')'
|
|
}
|
|
|
|
if (typeof val === 'undefined') {
|
|
if (prop.indexOf(':') === -1) {
|
|
var styles = window.getComputedStyle(self.elt);
|
|
var style = styles.getPropertyValue(prop);
|
|
return style;
|
|
} else {
|
|
var attrs = prop.split(';');
|
|
for (var i = 0; i < attrs.length; i++) {
|
|
var parts = attrs[i].split(':');
|
|
if (parts[0] && parts[1]) {
|
|
this.elt.style[parts[0].trim()] = parts[1].trim();
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
if (prop === 'rotate' || prop === 'translate' || prop === 'position'){
|
|
var trans = Array.prototype.shift.apply(arguments);
|
|
var f = this[trans] || this['_'+trans];
|
|
f.apply(this, arguments);
|
|
} else {
|
|
this.elt.style[prop] = val;
|
|
if (prop === 'width' || prop === 'height' || prop === 'left' || prop === 'top') {
|
|
var numVal = val.replace(/\D+/g, '');
|
|
this[prop] = parseInt(numVal, 10); // pend: is this necessary?
|
|
}
|
|
}
|
|
}
|
|
return this;
|
|
};
|
|
|
|
|
|
/**
|
|
*
|
|
* Adds a new attribute or changes the value of an existing attribute
|
|
* on the specified element. If no value is specified, returns the
|
|
* value of the given attribute, or null if attribute is not set.
|
|
*
|
|
* @method attribute
|
|
* @param {String} attr attribute to set
|
|
* @param {String} [value] value to assign to attribute
|
|
* @return {String|Object/p5.Element} value of attribute, if no value is
|
|
* specified or p5.Element
|
|
* @example
|
|
* <div class="norender"><code>
|
|
* var myDiv = createDiv("I like pandas.");
|
|
* myDiv.attribute("align", "center");
|
|
* </code></div>
|
|
*/
|
|
p5.Element.prototype.attribute = function(attr, value) {
|
|
if (typeof value === 'undefined') {
|
|
return this.elt.getAttribute(attr);
|
|
} else {
|
|
this.elt.setAttribute(attr, value);
|
|
return this;
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
*
|
|
* Removes an attribute on the specified element.
|
|
*
|
|
* @method removeAttribute
|
|
* @param {String} attr attribute to remove
|
|
* @return {Object/p5.Element}
|
|
*
|
|
* @example
|
|
* <div><code>
|
|
* var button;
|
|
* var checkbox;
|
|
*
|
|
* function setup() {
|
|
* checkbox = createCheckbox('enable', true);
|
|
* checkbox.changed(enableButton);
|
|
* button = createButton('button');
|
|
* button.position(10, 10);
|
|
* }
|
|
*
|
|
* function enableButton() {
|
|
* if( this.checked() ) {
|
|
* // Re-enable the button
|
|
* button.removeAttribute('disabled');
|
|
* } else {
|
|
* // Disable the button
|
|
* button.attribute('disabled','');
|
|
* }
|
|
* }
|
|
* </code></div>
|
|
*/
|
|
p5.Element.prototype.removeAttribute = function(attr) {
|
|
this.elt.removeAttribute(attr);
|
|
return this;
|
|
};
|
|
|
|
|
|
/**
|
|
* Either returns the value of the element if no arguments
|
|
* given, or sets the value of the element.
|
|
*
|
|
* @method value
|
|
* @param {String|Number} [value]
|
|
* @return {String|Object/p5.Element} value of element if no value is specified or p5.Element
|
|
* @example
|
|
* <div class='norender'><code>
|
|
* // gets the value
|
|
* var inp;
|
|
* function setup() {
|
|
* inp = createInput('');
|
|
* }
|
|
*
|
|
* function mousePressed() {
|
|
* print(inp.value());
|
|
* }
|
|
* </code></div>
|
|
* <div class='norender'><code>
|
|
* // sets the value
|
|
* var inp;
|
|
* function setup() {
|
|
* inp = createInput('myValue');
|
|
* }
|
|
*
|
|
* function mousePressed() {
|
|
* inp.value("myValue");
|
|
* }
|
|
* </code></div>
|
|
*/
|
|
p5.Element.prototype.value = function() {
|
|
if (arguments.length > 0) {
|
|
this.elt.value = arguments[0];
|
|
return this;
|
|
} else {
|
|
if (this.elt.type === 'range') {
|
|
return parseFloat(this.elt.value);
|
|
}
|
|
else return this.elt.value;
|
|
}
|
|
};
|
|
|
|
/**
|
|
*
|
|
* Shows the current element. Essentially, setting display:block for the style.
|
|
*
|
|
* @method show
|
|
* @return {Object/p5.Element}
|
|
* @example
|
|
* <div class='norender'><code>
|
|
* var div = createDiv('div');
|
|
* div.style("display", "none");
|
|
* div.show(); // turns display to block
|
|
* </code></div>
|
|
*/
|
|
p5.Element.prototype.show = function() {
|
|
this.elt.style.display = 'block';
|
|
return this;
|
|
};
|
|
|
|
/**
|
|
* Hides the current element. Essentially, setting display:none for the style.
|
|
*
|
|
* @method hide
|
|
* @return {Object/p5.Element}
|
|
* @example
|
|
* <div class='norender'><code>
|
|
* var div = createDiv('this is a div');
|
|
* div.hide();
|
|
* </code></div>
|
|
*/
|
|
p5.Element.prototype.hide = function() {
|
|
this.elt.style.display = 'none';
|
|
return this;
|
|
};
|
|
|
|
/**
|
|
*
|
|
* Sets the width and height of the element. AUTO can be used to
|
|
* only adjust one dimension. If no arguments given returns the width and height
|
|
* of the element in an object.
|
|
*
|
|
* @method size
|
|
* @param {Number} [w] width of the element
|
|
* @param {Number} [h] height of the element
|
|
* @return {Object/p5.Element}
|
|
* @example
|
|
* <div class='norender'><code>
|
|
* var div = createDiv('this is a div');
|
|
* div.size(100, 100);
|
|
* </code></div>
|
|
*/
|
|
p5.Element.prototype.size = function(w, h) {
|
|
if (arguments.length === 0){
|
|
return { 'width' : this.elt.offsetWidth , 'height' : this.elt.offsetHeight };
|
|
}else{
|
|
var aW = w;
|
|
var aH = h;
|
|
var AUTO = p5.prototype.AUTO;
|
|
if (aW !== AUTO || aH !== AUTO) {
|
|
if (aW === AUTO) {
|
|
aW = h * this.width / this.height;
|
|
} else if (aH === AUTO) {
|
|
aH = w * this.height / this.width;
|
|
}
|
|
// set diff for cnv vs normal div
|
|
if (this.elt instanceof HTMLCanvasElement) {
|
|
var j = {};
|
|
var k = this.elt.getContext('2d');
|
|
for (var prop in k) {
|
|
j[prop] = k[prop];
|
|
}
|
|
this.elt.setAttribute('width', aW * this._pInst._pixelDensity);
|
|
this.elt.setAttribute('height', aH * this._pInst._pixelDensity);
|
|
this.elt.setAttribute('style', 'width:' + aW + 'px; height:' + aH + 'px');
|
|
this._pInst.scale(this._pInst._pixelDensity, this._pInst._pixelDensity);
|
|
for (var prop in j) {
|
|
this.elt.getContext('2d')[prop] = j[prop];
|
|
}
|
|
} else {
|
|
this.elt.style.width = aW+'px';
|
|
this.elt.style.height = aH+'px';
|
|
this.elt.width = aW;
|
|
this.elt.height = aH;
|
|
this.width = aW;
|
|
this.height = aH;
|
|
}
|
|
|
|
this.width = this.elt.offsetWidth;
|
|
this.height = this.elt.offsetHeight;
|
|
|
|
if (this._pInst) { // main canvas associated with p5 instance
|
|
if (this._pInst._curElement.elt === this.elt) {
|
|
this._pInst._setProperty('width', this.elt.offsetWidth);
|
|
this._pInst._setProperty('height', this.elt.offsetHeight);
|
|
}
|
|
}
|
|
}
|
|
return this;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Removes the element and deregisters all listeners.
|
|
* @method remove
|
|
* @example
|
|
* <div class='norender'><code>
|
|
* var myDiv = createDiv('this is some text');
|
|
* myDiv.remove();
|
|
* </code></div>
|
|
*/
|
|
p5.Element.prototype.remove = function() {
|
|
// deregister events
|
|
for (var ev in this._events) {
|
|
this.elt.removeEventListener(ev, this._events[ev]);
|
|
}
|
|
if (this.elt.parentNode) {
|
|
this.elt.parentNode.removeChild(this.elt);
|
|
}
|
|
delete(this);
|
|
};
|
|
|
|
|
|
|
|
// =============================================================================
|
|
// p5.MediaElement additions
|
|
// =============================================================================
|
|
|
|
|
|
/**
|
|
* Extends p5.Element to handle audio and video. In addition to the methods
|
|
* of p5.Element, it also contains methods for controlling media. It is not
|
|
* called directly, but p5.MediaElements are created by calling createVideo,
|
|
* createAudio, and createCapture.
|
|
*
|
|
* @class p5.MediaElement
|
|
* @constructor
|
|
* @param {String} elt DOM node that is wrapped
|
|
* @param {Object} [pInst] pointer to p5 instance
|
|
*/
|
|
p5.MediaElement = function(elt, pInst) {
|
|
p5.Element.call(this, elt, pInst);
|
|
|
|
var self = this;
|
|
this.elt.crossOrigin = 'anonymous';
|
|
|
|
this._prevTime = 0;
|
|
this._cueIDCounter = 0;
|
|
this._cues = [];
|
|
this._pixelDensity = 1;
|
|
|
|
/**
|
|
* Path to the media element source.
|
|
*
|
|
* @property src
|
|
* @return {String} src
|
|
*/
|
|
Object.defineProperty(self, 'src', {
|
|
get: function() {
|
|
var firstChildSrc = self.elt.children[0].src;
|
|
var srcVal = self.elt.src === window.location.href ? '' : self.elt.src;
|
|
var ret = firstChildSrc === window.location.href ? srcVal : firstChildSrc;
|
|
return ret;
|
|
},
|
|
set: function(newValue) {
|
|
for (var i = 0; i < self.elt.children.length; i++) {
|
|
self.elt.removeChild(self.elt.children[i]);
|
|
}
|
|
var source = document.createElement('source');
|
|
source.src = newValue;
|
|
elt.appendChild(source);
|
|
self.elt.src = newValue;
|
|
},
|
|
});
|
|
|
|
// private _onended callback, set by the method: onended(callback)
|
|
self._onended = function() {};
|
|
self.elt.onended = function() {
|
|
self._onended(self);
|
|
}
|
|
};
|
|
p5.MediaElement.prototype = Object.create(p5.Element.prototype);
|
|
|
|
|
|
|
|
|
|
/**
|
|
* Play an HTML5 media element.
|
|
*
|
|
* @method play
|
|
* @return {Object/p5.Element}
|
|
*/
|
|
p5.MediaElement.prototype.play = function() {
|
|
if (this.elt.currentTime === this.elt.duration) {
|
|
this.elt.currentTime = 0;
|
|
}
|
|
|
|
if (this.elt.readyState > 1) {
|
|
this.elt.play();
|
|
} else {
|
|
// in Chrome, playback cannot resume after being stopped and must reload
|
|
this.elt.load();
|
|
this.elt.play();
|
|
}
|
|
return this;
|
|
};
|
|
|
|
/**
|
|
* Stops an HTML5 media element (sets current time to zero).
|
|
*
|
|
* @method stop
|
|
* @return {Object/p5.Element}
|
|
*/
|
|
p5.MediaElement.prototype.stop = function() {
|
|
this.elt.pause();
|
|
this.elt.currentTime = 0;
|
|
return this;
|
|
};
|
|
|
|
/**
|
|
* Pauses an HTML5 media element.
|
|
*
|
|
* @method pause
|
|
* @return {Object/p5.Element}
|
|
*/
|
|
p5.MediaElement.prototype.pause = function() {
|
|
this.elt.pause();
|
|
return this;
|
|
};
|
|
|
|
/**
|
|
* Set 'loop' to true for an HTML5 media element, and starts playing.
|
|
*
|
|
* @method loop
|
|
* @return {Object/p5.Element}
|
|
*/
|
|
p5.MediaElement.prototype.loop = function() {
|
|
this.elt.setAttribute('loop', true);
|
|
this.play();
|
|
return this;
|
|
};
|
|
/**
|
|
* Set 'loop' to false for an HTML5 media element. Element will stop
|
|
* when it reaches the end.
|
|
*
|
|
* @method noLoop
|
|
* @return {Object/p5.Element}
|
|
*/
|
|
p5.MediaElement.prototype.noLoop = function() {
|
|
this.elt.setAttribute('loop', false);
|
|
return this;
|
|
};
|
|
|
|
|
|
/**
|
|
* Set HTML5 media element to autoplay or not.
|
|
*
|
|
* @method autoplay
|
|
* @param {Boolean} autoplay whether the element should autoplay
|
|
* @return {Object/p5.Element}
|
|
*/
|
|
p5.MediaElement.prototype.autoplay = function(val) {
|
|
this.elt.setAttribute('autoplay', val);
|
|
return this;
|
|
};
|
|
|
|
/**
|
|
* Sets volume for this HTML5 media element. If no argument is given,
|
|
* returns the current volume.
|
|
*
|
|
* @param {Number} [val] volume between 0.0 and 1.0
|
|
* @return {Number|p5.MediaElement} current volume or p5.MediaElement
|
|
* @method volume
|
|
*/
|
|
p5.MediaElement.prototype.volume = function(val) {
|
|
if (typeof val === 'undefined') {
|
|
return this.elt.volume;
|
|
} else {
|
|
this.elt.volume = val;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* If no arguments are given, returns the current playback speed of the
|
|
* element. The speed parameter sets the speed where 2.0 will play the
|
|
* element twice as fast, 0.5 will play at half the speed, and -1 will play
|
|
* the element in normal speed in reverse.(Note that not all browsers support
|
|
* backward playback and even if they do, playback might not be smooth.)
|
|
*
|
|
* @method speed
|
|
* @param {Number} [speed] speed multiplier for element playback
|
|
* @return {Number|Object/p5.MediaElement} current playback speed or p5.MediaElement
|
|
*/
|
|
p5.MediaElement.prototype.speed = function(val) {
|
|
if (typeof val === 'undefined') {
|
|
return this.elt.playbackRate;
|
|
} else {
|
|
this.elt.playbackRate = val;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* If no arguments are given, returns the current time of the element.
|
|
* If an argument is given the current time of the element is set to it.
|
|
*
|
|
* @method time
|
|
* @param {Number} [time] time to jump to (in seconds)
|
|
* @return {Number|Object/p5.MediaElement} current time (in seconds)
|
|
* or p5.MediaElement
|
|
*/
|
|
p5.MediaElement.prototype.time = function(val) {
|
|
if (typeof val === 'undefined') {
|
|
return this.elt.currentTime;
|
|
} else {
|
|
this.elt.currentTime = val;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Returns the duration of the HTML5 media element.
|
|
*
|
|
* @method duration
|
|
* @return {Number} duration
|
|
*/
|
|
p5.MediaElement.prototype.duration = function() {
|
|
return this.elt.duration;
|
|
};
|
|
p5.MediaElement.prototype.pixels = [];
|
|
p5.MediaElement.prototype.loadPixels = function() {
|
|
if (!this.canvas) {
|
|
this.canvas = document.createElement('canvas');
|
|
this.drawingContext = this.canvas.getContext('2d');
|
|
}
|
|
if (this.loadedmetadata) { // wait for metadata for w/h
|
|
if (this.canvas.width !== this.elt.width) {
|
|
this.canvas.width = this.elt.width;
|
|
this.canvas.height = this.elt.height;
|
|
this.width = this.canvas.width;
|
|
this.height = this.canvas.height;
|
|
}
|
|
this.drawingContext.drawImage(this.elt, 0, 0, this.canvas.width, this.canvas.height);
|
|
p5.Renderer2D.prototype.loadPixels.call(this);
|
|
}
|
|
return this;
|
|
}
|
|
p5.MediaElement.prototype.updatePixels = function(x, y, w, h){
|
|
if (this.loadedmetadata) { // wait for metadata
|
|
p5.Renderer2D.prototype.updatePixels.call(this, x, y, w, h);
|
|
}
|
|
return this;
|
|
}
|
|
p5.MediaElement.prototype.get = function(x, y, w, h){
|
|
if (this.loadedmetadata) { // wait for metadata
|
|
return p5.Renderer2D.prototype.get.call(this, x, y, w, h);
|
|
} else if (typeof x === 'undefined') {
|
|
return new p5.Image(1, 1);
|
|
} else if (w > 1) {
|
|
return new p5.Image(x, y, w, h);
|
|
} else {
|
|
return [0, 0, 0, 255];
|
|
}
|
|
};
|
|
p5.MediaElement.prototype.set = function(x, y, imgOrCol){
|
|
if (this.loadedmetadata) { // wait for metadata
|
|
p5.Renderer2D.prototype.set.call(this, x, y, imgOrCol);
|
|
}
|
|
};
|
|
p5.MediaElement.prototype.copy = function(){
|
|
p5.Renderer2D.prototype.copy.apply(this, arguments);
|
|
};
|
|
p5.MediaElement.prototype.mask = function(){
|
|
this.loadPixels();
|
|
p5.Image.prototype.mask.apply(this, arguments);
|
|
};
|
|
/**
|
|
* Schedule an event to be called when the audio or video
|
|
* element reaches the end. If the element is looping,
|
|
* this will not be called. The element is passed in
|
|
* as the argument to the onended callback.
|
|
*
|
|
* @method onended
|
|
* @param {Function} callback function to call when the
|
|
* soundfile has ended. The
|
|
* media element will be passed
|
|
* in as the argument to the
|
|
* callback.
|
|
* @return {Object/p5.MediaElement}
|
|
* @example
|
|
* <div><code>
|
|
* function setup() {
|
|
* audioEl = createAudio('assets/beat.mp3');
|
|
* audioEl.showControls(true);
|
|
* audioEl.onended(sayDone);
|
|
* }
|
|
*
|
|
* function sayDone(elt) {
|
|
* alert('done playing ' + elt.src );
|
|
* }
|
|
* </code></div>
|
|
*/
|
|
p5.MediaElement.prototype.onended = function(callback) {
|
|
this._onended = callback;
|
|
return this;
|
|
};
|
|
|
|
|
|
/*** CONNECT TO WEB AUDIO API / p5.sound.js ***/
|
|
|
|
/**
|
|
* Send the audio output of this element to a specified audioNode or
|
|
* p5.sound object. If no element is provided, connects to p5's master
|
|
* output. That connection is established when this method is first called.
|
|
* All connections are removed by the .disconnect() method.
|
|
*
|
|
* This method is meant to be used with the p5.sound.js addon library.
|
|
*
|
|
* @method connect
|
|
* @param {AudioNode|p5.sound object} audioNode AudioNode from the Web Audio API,
|
|
* or an object from the p5.sound library
|
|
*/
|
|
p5.MediaElement.prototype.connect = function(obj) {
|
|
var audioContext, masterOutput;
|
|
|
|
// if p5.sound exists, same audio context
|
|
if (typeof p5.prototype.getAudioContext === 'function') {
|
|
audioContext = p5.prototype.getAudioContext();
|
|
masterOutput = p5.soundOut.input;
|
|
} else {
|
|
try {
|
|
audioContext = obj.context;
|
|
masterOutput = audioContext.destination
|
|
} catch(e) {
|
|
throw 'connect() is meant to be used with Web Audio API or p5.sound.js'
|
|
}
|
|
}
|
|
|
|
// create a Web Audio MediaElementAudioSourceNode if none already exists
|
|
if (!this.audioSourceNode) {
|
|
this.audioSourceNode = audioContext.createMediaElementSource(this.elt);
|
|
|
|
// connect to master output when this method is first called
|
|
this.audioSourceNode.connect(masterOutput);
|
|
}
|
|
|
|
// connect to object if provided
|
|
if (obj) {
|
|
if (obj.input) {
|
|
this.audioSourceNode.connect(obj.input);
|
|
} else {
|
|
this.audioSourceNode.connect(obj);
|
|
}
|
|
}
|
|
|
|
// otherwise connect to master output of p5.sound / AudioContext
|
|
else {
|
|
this.audioSourceNode.connect(masterOutput);
|
|
}
|
|
|
|
};
|
|
|
|
/**
|
|
* Disconnect all Web Audio routing, including to master output.
|
|
* This is useful if you want to re-route the output through
|
|
* audio effects, for example.
|
|
*
|
|
* @method disconnect
|
|
*/
|
|
p5.MediaElement.prototype.disconnect = function() {
|
|
if (this.audioSourceNode) {
|
|
this.audioSourceNode.disconnect();
|
|
} else {
|
|
throw 'nothing to disconnect';
|
|
}
|
|
};
|
|
|
|
|
|
/*** SHOW / HIDE CONTROLS ***/
|
|
|
|
/**
|
|
* Show the default MediaElement controls, as determined by the web browser.
|
|
*
|
|
* @method showControls
|
|
*/
|
|
p5.MediaElement.prototype.showControls = function() {
|
|
// must set style for the element to show on the page
|
|
this.elt.style['text-align'] = 'inherit';
|
|
this.elt.controls = true;
|
|
};
|
|
|
|
/**
|
|
* Hide the default mediaElement controls.
|
|
*
|
|
* @method hideControls
|
|
*/
|
|
p5.MediaElement.prototype.hideControls = function() {
|
|
this.elt.controls = false;
|
|
};
|
|
|
|
/*** SCHEDULE EVENTS ***/
|
|
|
|
/**
|
|
* Schedule events to trigger every time a MediaElement
|
|
* (audio/video) reaches a playback cue point.
|
|
*
|
|
* Accepts a callback function, a time (in seconds) at which to trigger
|
|
* the callback, and an optional parameter for the callback.
|
|
*
|
|
* Time will be passed as the first parameter to the callback function,
|
|
* and param will be the second parameter.
|
|
*
|
|
*
|
|
* @method addCue
|
|
* @param {Number} time Time in seconds, relative to this media
|
|
* element's playback. For example, to trigger
|
|
* an event every time playback reaches two
|
|
* seconds, pass in the number 2. This will be
|
|
* passed as the first parameter to
|
|
* the callback function.
|
|
* @param {Function} callback Name of a function that will be
|
|
* called at the given time. The callback will
|
|
* receive time and (optionally) param as its
|
|
* two parameters.
|
|
* @param {Object} [value] An object to be passed as the
|
|
* second parameter to the
|
|
* callback function.
|
|
* @return {Number} id ID of this cue,
|
|
* useful for removeCue(id)
|
|
* @example
|
|
* <div><code>
|
|
* function setup() {
|
|
* background(255,255,255);
|
|
*
|
|
* audioEl = createAudio('assets/beat.mp3');
|
|
* audioEl.showControls();
|
|
*
|
|
* // schedule three calls to changeBackground
|
|
* audioEl.addCue(0.5, changeBackground, color(255,0,0) );
|
|
* audioEl.addCue(1.0, changeBackground, color(0,255,0) );
|
|
* audioEl.addCue(2.5, changeBackground, color(0,0,255) );
|
|
* audioEl.addCue(3.0, changeBackground, color(0,255,255) );
|
|
* audioEl.addCue(4.2, changeBackground, color(255,255,0) );
|
|
* audioEl.addCue(5.0, changeBackground, color(255,255,0) );
|
|
* }
|
|
*
|
|
* function changeBackground(val) {
|
|
* background(val);
|
|
* }
|
|
* </code></div>
|
|
*/
|
|
p5.MediaElement.prototype.addCue = function(time, callback, val) {
|
|
var id = this._cueIDCounter++;
|
|
|
|
var cue = new Cue(callback, time, id, val);
|
|
this._cues.push(cue);
|
|
|
|
if (!this.elt.ontimeupdate) {
|
|
this.elt.ontimeupdate = this._onTimeUpdate.bind(this);
|
|
}
|
|
|
|
return id;
|
|
};
|
|
|
|
/**
|
|
* Remove a callback based on its ID. The ID is returned by the
|
|
* addCue method.
|
|
*
|
|
* @method removeCue
|
|
* @param {Number} id ID of the cue, as returned by addCue
|
|
*/
|
|
p5.MediaElement.prototype.removeCue = function(id) {
|
|
for (var i = 0; i < this._cues.length; i++) {
|
|
var cue = this._cues[i];
|
|
if (cue.id === id) {
|
|
this.cues.splice(i, 1);
|
|
}
|
|
}
|
|
|
|
if (this._cues.length === 0) {
|
|
this.elt.ontimeupdate = null
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Remove all of the callbacks that had originally been scheduled
|
|
* via the addCue method.
|
|
*
|
|
* @method clearCues
|
|
*/
|
|
p5.MediaElement.prototype.clearCues = function() {
|
|
this._cues = [];
|
|
this.elt.ontimeupdate = null;
|
|
};
|
|
|
|
// private method that checks for cues to be fired if events
|
|
// have been scheduled using addCue(callback, time).
|
|
p5.MediaElement.prototype._onTimeUpdate = function() {
|
|
var playbackTime = this.time();
|
|
|
|
for (var i = 0 ; i < this._cues.length; i++) {
|
|
var callbackTime = this._cues[i].time;
|
|
var val = this._cues[i].val;
|
|
|
|
|
|
if (this._prevTime < callbackTime && callbackTime <= playbackTime) {
|
|
|
|
// pass the scheduled callbackTime as parameter to the callback
|
|
this._cues[i].callback(val);
|
|
}
|
|
|
|
}
|
|
|
|
this._prevTime = playbackTime;
|
|
};
|
|
|
|
|
|
// Cue inspired by JavaScript setTimeout, and the
|
|
// Tone.js Transport Timeline Event, MIT License Yotam Mann 2015 tonejs.org
|
|
var Cue = function(callback, time, id, val) {
|
|
this.callback = callback;
|
|
this.time = time;
|
|
this.id = id;
|
|
this.val = val;
|
|
};
|
|
|
|
// =============================================================================
|
|
// p5.File
|
|
// =============================================================================
|
|
|
|
|
|
/**
|
|
* Base class for a file
|
|
* Using this for createFileInput
|
|
*
|
|
* @class p5.File
|
|
* @constructor
|
|
* @param {File} file File that is wrapped
|
|
* @param {Object} [pInst] pointer to p5 instance
|
|
*/
|
|
p5.File = function(file, pInst) {
|
|
/**
|
|
* Underlying File object. All normal File methods can be called on this.
|
|
*
|
|
* @property file
|
|
*/
|
|
this.file = file;
|
|
|
|
this._pInst = pInst;
|
|
|
|
// Splitting out the file type into two components
|
|
// This makes determining if image or text etc simpler
|
|
var typeList = file.type.split('/');
|
|
/**
|
|
* File type (image, text, etc.)
|
|
*
|
|
* @property type
|
|
*/
|
|
this.type = typeList[0];
|
|
/**
|
|
* File subtype (usually the file extension jpg, png, xml, etc.)
|
|
*
|
|
* @property subtype
|
|
*/
|
|
this.subtype = typeList[1];
|
|
/**
|
|
* File name
|
|
*
|
|
* @property name
|
|
*/
|
|
this.name = file.name;
|
|
/**
|
|
* File size
|
|
*
|
|
* @property size
|
|
*/
|
|
this.size = file.size;
|
|
|
|
/**
|
|
* URL string containing image data.
|
|
*
|
|
* @property data
|
|
*/
|
|
this.data = undefined;
|
|
};
|
|
|
|
}));
|