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-rwxr-xr-xjaws/src/assets.js537
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-var jaws = (function(jaws) {
- /**
- * @fileOverview jaws.assets properties and functions
- *
- * Loads and processes image, sound, video, and json assets
- * (Used internally by JawsJS to create <b>jaws.assets</b>)
- *
- * @class Jaws.Assets
- * @constructor
- * @property {boolean} bust_cache Add a random argument-string to assets-urls when loading to bypass any cache
- * @property {boolean} fuchia_to_transparent Convert the color fuchia to transparent when loading .bmp-files
- * @property {boolean} image_to_canvas Convert all image assets to canvas internally
- * @property {string} root Rootdir from where all assets are loaded
- * @property {array} file_type Listing of file postfixes and their associated types
- * @property {array} can_play Listing of postfixes and (during runtime) populated booleans
- */
- jaws.Assets = function Assets() {
- if (!(this instanceof arguments.callee))
- return new arguments.callee();
-
- var self = this;
-
- self.loaded = [];
- self.loading = [];
- self.src_list = [];
- self.data = [];
-
- self.bust_cache = false;
- self.image_to_canvas = true;
- self.fuchia_to_transparent = true;
- self.root = "";
-
- self.file_type = {};
- self.file_type["json"] = "json";
- self.file_type["wav"] = "audio";
- self.file_type["mp3"] = "audio";
- self.file_type["ogg"] = "audio";
- self.file_type['m4a'] = "audio";
- self.file_type['weba'] = "audio";
- self.file_type['aac'] = "audio";
- self.file_type['mka'] = "audio";
- self.file_type['flac'] = "audio";
- self.file_type["png"] = "image";
- self.file_type["jpg"] = "image";
- self.file_type["jpeg"] = "image";
- self.file_type["gif"] = "image";
- self.file_type["bmp"] = "image";
- self.file_type["tiff"] = "image";
- self.file_type['mp4'] = "video";
- self.file_type['webm'] = "video";
- self.file_type['ogv'] = "video";
- self.file_type['mkv'] = "video";
-
- self.can_play = {};
-
- try {
- var audioTest = new Audio();
- self.can_play["wav"] = !!audioTest.canPlayType('audio/wav; codecs="1"').replace(/^no$/, '');
- self.can_play["ogg"] = !!audioTest.canPlayType('audio/ogg; codecs="vorbis"').replace(/^no$/, '');
- self.can_play["mp3"] = !!audioTest.canPlayType('audio/mpeg;').replace(/^no$/, '');
- self.can_play["m4a"] = !!(audioTest.canPlayType('audio/x-m4a;') || audioTest.canPlayType('audio/aac;')).replace(/^no$/, '');
- self.can_play["weba"] = !!audioTest.canPlayType('audio/webm; codecs="vorbis"').replace(/^no$/, '');
- self.can_play["aac"] = !!audioTest.canPlayType('audio/aac;').replace(/^no$/, '');
- self.can_play["mka"] = !!audioTest.canPlayType('audio/x-matroska;').replace(/^no$/, '');
- self.can_play["flac"] = !!audioTest.canPlayType('audio/x-flac;').replace(/^no$/, '');
- }
- catch(e) {
- }
-
- try {
- var videoTest = document.createElement('video');
- self.can_play["mp4"] = !!videoTest.canPlayType('video/mp4;').replace(/^no$/, '');
- self.can_play["webm"] = !!videoTest.canPlayType('video/webm; codecs="vorbis"').replace(/^no$/, '');
- self.can_play["ogv"] = !!videoTest.canPlayType('video/ogg; codecs="vorbis"').replace(/^no$/, '');
- self.can_play["mkv"] = !!videoTest.canPlayType('video/x-matroska;').replace(/^no$/, '');
- }
- catch(e) {
- }
-
- /**
- * Returns the length of the resource list
- * @public
- * @returns {number} The length of the resource list
- */
- self.length = function() {
- return self.src_list.length;
- };
-
- /**
- * Set root prefix-path to all assets
- *
- * @example
- * jaws.assets.setRoot("music/").add(["music.mp3", "music.ogg"]).loadAll()
- *
- * @public
- * @param {string} path-prefix for all following assets
- * @returns {object} self
- */
- self.setRoot = function(path) {
- self.root = path
- return self
- }
-
- /**
- * Get one or more resources from their URLs. Supports simple wildcard (you can end a string with "*").
- *
- * @example
- * jaws.assets.add(["song.mp3", "song.ogg"])
- * jaws.assets.get("song.*") // -> Will return song.ogg in firefox and song.mp3 in IE
- *
- * @public
- * @param {string|array} src The resource(s) to retrieve
- * @returns {array|object} Array or single resource if found in cache. Undefined otherwise.
- */
- self.get = function(src) {
- if (jaws.isArray(src)) {
- return src.map(function(i) {
- return self.data[i];
- });
- }
- else if (jaws.isString(src)) {
- // Wildcard? song.*, match against asset-srcs, make sure it's loaded and return content of first match.
- if(src[src.length-1] === "*") {
- var needle = src.replace("*", "")
- for(var i=0; i < self.src_list.length; i++) {
- if(self.src_list[i].indexOf(needle) == 0 && self.data[self.src_list[i]])
- return self.data[self.src_list[i]];
- }
- }
-
- // TODO: self.loaded[src] is false for supported files for some odd reason.
- if (self.data[src]) { return self.data[src]; }
- else { jaws.log.warn("No such asset: " + src, true); }
- }
- else {
- jaws.log.error("jaws.get: Neither String nor Array. Incorrect URL resource " + src);
- return;
- }
- };
-
- /**
- * Returns if specified resource is currently loading or not
- * @public
- * @param {string} src Resource URL
- * @return {boolean|undefined} If resource is currently loading. Otherwise, undefined.
- */
- self.isLoading = function(src) {
- if (jaws.isString(src)) {
- return self.loading[src];
- } else {
- jaws.log.error("jaws.isLoading: Argument not a String with " + src);
- }
- };
-
- /**
- * Returns if specified resource is loaded or not
- * @param src Source URL
- * @return {boolean|undefined} If specified resource is loaded or not. Otherwise, undefined.
- */
- self.isLoaded = function(src) {
- if (jaws.isString(src)) {
- return self.loaded[src];
- } else {
- jaws.log.error("jaws.isLoaded: Argument not a String with " + src);
- }
- };
-
- /**
- * Returns lowercase postfix of specified resource
- * @public
- * @param {string} src Resource URL
- * @returns {string} Lowercase postfix of resource
- */
- self.getPostfix = function(src) {
- if (jaws.isString(src)) {
- return src.toLowerCase().match(/.+\.([^?]+)(\?|$)/)[1];
- } else {
- jaws.log.error("jaws.assets.getPostfix: Argument not a String with " + src);
- }
- };
-
- /**
- * Determine type of file (Image, Audio, or Video) from its postfix
- * @private
- * @param {string} src Resource URL
- * @returns {string} Matching type {Image, Audio, Video} or the postfix itself
- */
- function getType(src) {
- if (jaws.isString(src)) {
- var postfix = self.getPostfix(src);
- return (self.file_type[postfix] ? self.file_type[postfix] : postfix);
- } else {
- jaws.log.error("jaws.assets.getType: Argument not a String with " + src);
- }
- }
-
- /**
- * Add URL(s) to asset listing for later loading
- * @public
- * @param {string|array|arguments} src The resource URL(s) to add to the asset listing
- * @example
- * jaws.assets.add("player.png")
- * jaws.assets.add(["media/bullet1.png", "media/bullet2.png"])
- * jaws.assets.add("foo.png", "bar.png")
- * jaws.assets.loadAll({onload: start_game})
- */
- self.add = function(src) {
- var list = arguments;
- if(list.length == 1 && jaws.isArray(list[0])) list = list[0];
-
- for(var i=0; i < list.length; i++) {
- if(jaws.isArray(list[i])) {
- self.add(list[i]);
- }
- else {
- if(jaws.isString(list[i])) { self.src_list.push(list[i]) }
- else { jaws.log.error("jaws.assets.add: Neither String nor Array. Incorrect URL resource " + src) }
- }
- }
-
- return self;
- };
-
- /**
- * Iterate through the list of resource URL(s) and load each in turn.
- * @public
- * @param {Object} options Object-literal of callback functions
- * @config {function} [options.onprogress] The function to be called on progress (when one assets of many is loaded)
- * @config {function} [options.onerror] The function to be called if an error occurs
- * @config {function} [options.onload] The function to be called when finished
- */
- self.loadAll = function(options) {
- self.load_count = 0;
- self.error_count = 0;
-
- if (options.onprogress && jaws.isFunction(options.onprogress))
- self.onprogress = options.onprogress;
-
- if (options.onerror && jaws.isFunction(options.onerror))
- self.onerror = options.onerror;
-
- if (options.onload && jaws.isFunction(options.onload))
- self.onload = options.onload;
-
- self.src_list.forEach(function(item) {
- self.load(item);
- });
-
- return self;
- };
-
- /**
- * Loads a single resource from its given URL
- * Will attempt to match a resource to known MIME types.
- * If unknown, loads the file as a blob-object.
- *
- * @public
- * @param {string} src Resource URL
- * @param {Object} options Object-literal of callback functions
- * @config {function} [options.onload] Function to be called when assets has loaded
- * @config {function} [options.onerror] Function to be called if an error occurs
- * @example
- * jaws.load("media/foo.png")
- * jaws.load("http://place.tld/foo.png")
- */
- self.load = function(src, options) {
- if(!options) options = {};
-
- if (!jaws.isString(src)) {
- jaws.log.error("jaws.assets.load: Argument not a String with " + src);
- return;
- }
-
- var asset = {};
- var resolved_src = "";
- asset.src = src;
- asset.onload = options.onload;
- asset.onerror = options.onerror;
- self.loading[src] = true;
- var parser = RegExp('^((f|ht)tp(s)?:)?//');
- if (parser.test(src)) {
- resolved_src = asset.src;
- } else {
- resolved_src = self.root + asset.src;
- }
- if (self.bust_cache) {
- resolved_src += "?" + parseInt(Math.random() * 10000000);
- }
-
- var type = getType(asset.src);
- if (type === "image") {
- try {
- asset.image = new Image();
- asset.image.asset = asset;
- asset.image.addEventListener('load', assetLoaded);
- asset.image.addEventListener('error', assetError);
- asset.image.src = resolved_src;
- } catch (e) {
- jaws.log.error("Cannot load Image resource " + resolved_src +
- " (Message: " + e.message + ", Name: " + e.name + ")");
- }
- }
- else if (self.can_play[self.getPostfix(asset.src)]) {
- if (type === "audio") {
- try {
- asset.audio = new Audio();
- asset.audio.asset = asset;
- asset.audio.addEventListener('error', assetError);
- asset.audio.addEventListener('canplay', assetLoaded); // NOTE: assetLoaded can be called several times during loading.
- self.data[asset.src] = asset.audio;
- asset.audio.src = resolved_src;
- asset.audio.load();
- } catch (e) {
- jaws.log.error("Cannot load Audio resource " + resolved_src +
- " (Message: " + e.message + ", Name: " + e.name + ")");
- }
- }
- else if (type === "video") {
- try {
- asset.video = document.createElement('video');
- asset.video.asset = asset;
- self.data[asset.src] = asset.video;
- asset.video.setAttribute("style", "display:none;");
- asset.video.addEventListener('error', assetError);
- asset.video.addEventListener('canplay', assetLoaded);
- document.body.appendChild(asset.video);
- asset.video.src = resolved_src;
- asset.video.load();
- } catch (e) {
- jaws.log.error("Cannot load Video resource " + resolved_src +
- " (Message: " + e.message + ", Name: " + e.name + ")");
- }
- }
- }
-
- //Load everything else as raw blobs...
- else {
- // ... But don't load un-supported audio-files.
- if(type === "audio" && !self.can_play[self.getPostfix(asset.src)]) {
- assetSkipped(asset);
- return self;
- }
-
- try {
- var req = new XMLHttpRequest();
- req.asset = asset;
- req.onreadystatechange = assetLoaded;
- req.onerror = assetError;
- req.open('GET', resolved_src, true);
- if (type !== "json")
- req.responseType = "blob";
- req.send(null);
- } catch (e) {
- jaws.log.error("Cannot load " + resolved_src +
- " (Message: " + e.message + ", Name: " + e.name + ")");
- }
- }
-
- return self;
- };
-
- /**
- * Initial loading callback for all assets for parsing specific filetypes or
- * optionally converting images to canvas-objects.
- * @private
- * @param {EventObject} event The EventObject populated by the calling event
- * @see processCallbacks()
- */
- function assetLoaded(event) {
- var asset = this.asset;
- var src = asset.src;
- var filetype = getType(asset.src);
-
- try {
- if (filetype === "json") {
- if (this.readyState !== 4) {
- return;
- }
- self.data[asset.src] = JSON.parse(this.responseText);
- }
- else if (filetype === "image") {
- var new_image = self.image_to_canvas ? jaws.imageToCanvas(asset.image) : asset.image;
- if (self.fuchia_to_transparent && self.getPostfix(asset.src) === "bmp") {
- new_image = fuchiaToTransparent(new_image);
- }
- self.data[asset.src] = new_image;
- }
- else if (filetype === "audio" && self.can_play[self.getPostfix(asset.src)]) {
- self.data[asset.src] = asset.audio;
- }
- else if (filetype === "video" && self.can_play[self.getPostfix(asset.src)]) {
- self.data[asset.src] = asset.video;
- } else {
- self.data[asset.src] = this.response;
- }
- } catch (e) {
- jaws.log.error("Cannot process " + src +
- " (Message: " + e.message + ", Name: " + e.name + ")");
- self.data[asset.src] = null;
- }
-
- /*
- * Only increment load_count ONCE per unique asset.
- * This is needed cause assetLoaded-callback can in certain cases be called several for a single asset...
- * ..and not only Once when it's loaded.
- */
- if( !self.loaded[src]) self.load_count++;
-
- self.loaded[src] = true;
- self.loading[src] = false;
-
- processCallbacks(asset, true, event);
- }
-
- /**
- * Called when jaws asset-handler decides that an asset shouldn't be loaded
- * For example, an unsupported audio-format won't be loaded.
- *
- * @private
- */
- function assetSkipped(asset) {
- self.loaded[asset.src] = true;
- self.loading[asset.src] = false;
- self.load_count++;
- processCallbacks(asset, true);
- }
-
- /**
- * Increases the error count and calls processCallbacks with false flag set
- * @see processCallbacks()
- * @private
- * @param {EventObject} event The EventObject populated by the calling event
- */
- function assetError(event) {
- var asset = this.asset;
- self.error_count++;
- processCallbacks(asset, false, event);
- }
-
- /**
- * Processes (if set) the callbacks per resource
- * @private
- * @param {object} asset The asset to be processed
- * @param {boolean} ok If an error has occured with the asset loading
- * @param {EventObject} event The EventObject populated by the calling event
- * @see jaws.start() in core.js
- */
- function processCallbacks(asset, ok, event) {
- var percent = parseInt((self.load_count + self.error_count) / self.src_list.length * 100);
-
- if (ok) {
- if(self.onprogress)
- self.onprogress(asset.src, percent);
- if(asset.onprogress && event !== undefined)
- asset.onprogress(event);
- }
- else {
- if(self.onerror)
- self.onerror(asset.src, percent);
- if(asset.onerror && event !== undefined)
- asset.onerror(event);
- }
-
- if (percent === 100) {
- if(self.onload) self.onload();
-
- self.onprogress = null;
- self.onerror = null;
- self.onload = null;
- }
- }
-
- /**
- * Displays the progress of asset handling as an overall percentage of all loading
- * (Can be overridden as jaws.assets.displayProgress = function(percent_done) {})
- * @public
- * @param {number} percent_done The overall percentage done across all resource handling
- */
- self.displayProgress = function(percent_done) {
-
- if (!jaws.isNumber(percent_done))
- return;
-
- if (!jaws.context)
- return;
-
- jaws.context.save();
- jaws.context.fillStyle = "black";
- jaws.context.fillRect(0, 0, jaws.width, jaws.height);
-
- jaws.context.fillStyle = "white";
- jaws.context.strokeStyle = "white";
- jaws.context.textAlign = "center";
-
- jaws.context.strokeRect(50 - 1, (jaws.height / 2) - 30 - 1, jaws.width - 100 + 2, 60 + 2);
- jaws.context.fillRect(50, (jaws.height / 2) - 30, ((jaws.width - 100) / 100) * percent_done, 60);
-
- jaws.context.font = "11px verdana";
- jaws.context.fillText("Loading... " + percent_done + "%", jaws.width / 2, jaws.height / 2 - 35);
-
- jaws.context.font = "11px verdana";
- jaws.context.fillStyle = "#ccc";
- jaws.context.textBaseline = "bottom";
- jaws.context.fillText("powered by www.jawsjs.com", jaws.width / 2, jaws.height - 1);
-
- jaws.context.restore();
- };
- };
-
- /**
- * Make Fuchia (0xFF00FF) transparent (BMPs ONLY)
- * @private
- * @param {HTMLImageElement} image The Bitmap Image to convert
- * @returns {CanvasElement} canvas The translated CanvasElement
- */
- function fuchiaToTransparent(image) {
- if (!jaws.isDrawable(image))
- return;
-
- var canvas = jaws.isImage(image) ? jaws.imageToCanvas(image) : image;
- var context = canvas.getContext("2d");
- var img_data = context.getImageData(0, 0, canvas.width, canvas.height);
- var pixels = img_data.data;
- for (var i = 0; i < pixels.length; i += 4) {
- if (pixels[i] === 255 && pixels[i + 1] === 0 && pixels[i + 2] === 255) { // Color: Fuchia
- pixels[i + 3] = 0; // Set total see-through transparency
- }
- }
-
- context.putImageData(img_data, 0, 0);
- return canvas;
- }
-
- jaws.assets = new jaws.Assets();
- return jaws;
-})(jaws || {});
-
generated by cgit v0.10.2 at 2026-01-08 11:41:01 (GMT)