diff options
Diffstat (limited to 'plugins/jetpack/modules/holiday-snow/snowstorm.js')
-rw-r--r-- | plugins/jetpack/modules/holiday-snow/snowstorm.js | 541 |
1 files changed, 0 insertions, 541 deletions
diff --git a/plugins/jetpack/modules/holiday-snow/snowstorm.js b/plugins/jetpack/modules/holiday-snow/snowstorm.js deleted file mode 100644 index 2ff6320e..00000000 --- a/plugins/jetpack/modules/holiday-snow/snowstorm.js +++ /dev/null @@ -1,541 +0,0 @@ -/** @license - * DHTML Snowstorm! JavaScript-based Snow for web pages - * -------------------------------------------------------- - * Version 1.43.20111201 (Previous rev: 1.42.20111120) - * Copyright (c) 2007, Scott Schiller. All rights reserved. - * Code provided under the BSD License: - * http://schillmania.com/projects/snowstorm/license.txt - */ - -/*global window, document, navigator, clearInterval, setInterval */ -/*jslint white: false, onevar: true, plusplus: false, undef: true, nomen: true, eqeqeq: true, bitwise: true, regexp: true, newcap: true, immed: true */ - -var snowStorm = (function(window, document) { - - // --- common properties --- - - this.autoStart = true; // Whether the snow should start automatically or not. - this.flakesMax = 60; // Limit total amount of snow made (falling + sticking) - this.flakesMaxActive = 60; // Limit amount of snow falling at once (less = lower CPU use) - this.animationInterval = 40; // Theoretical "miliseconds per frame" measurement. 20 = fast + smooth, but high CPU use. 50 = more conservative, but slower - this.excludeMobile = true; // Snow is likely to be bad news for mobile phones' CPUs (and batteries.) By default, be nice. - this.flakeBottom = null; // Integer for Y axis snow limit, 0 or null for "full-screen" snow effect - this.followMouse = true; // Snow movement can respond to the user's mouse - this.snowColor = '#fff'; // Don't eat (or use?) yellow snow. - this.snowCharacter = '•'; // • = bullet, · is square on some systems etc. - this.snowStick = false; // Whether or not snow should "stick" at the bottom. When off, will never collect. - this.targetElement = null; // element which snow will be appended to (null = document.body) - can be an element ID eg. 'myDiv', or a DOM node reference - this.useMeltEffect = true; // When recycling fallen snow (or rarely, when falling), have it "melt" and fade out if browser supports it - this.useTwinkleEffect = false; // Allow snow to randomly "flicker" in and out of view while falling - this.usePositionFixed = false; // true = snow does not shift vertically when scrolling. May increase CPU load, disabled by default - if enabled, used only where supported - - // --- less-used bits --- - - this.freezeOnBlur = true; // Only snow when the window is in focus (foreground.) Saves CPU. - this.flakeLeftOffset = 0; // Left margin/gutter space on edge of container (eg. browser window.) Bump up these values if seeing horizontal scrollbars. - this.flakeRightOffset = 0; // Right margin/gutter space on edge of container - this.flakeWidth = 5; // Max pixel width reserved for snow element - this.flakeHeight = 5; // Max pixel height reserved for snow element - this.vMaxX = 2.5; // Maximum X velocity range for snow - this.vMaxY = 2.5; // Maximum Y velocity range for snow - this.zIndex = 100000; // CSS stacking order applied to each snowflake - - // --- End of user section --- - - var s = this, storm = this, i, - // UA sniffing and backCompat rendering mode checks for fixed position, etc. - isIE = navigator.userAgent.match(/msie/i), - isIE6 = navigator.userAgent.match(/msie 6/i), - isWin98 = navigator.appVersion.match(/windows 98/i), - isMobile = navigator.userAgent.match(/mobile|opera m(ob|in)/i), - isBackCompatIE = (isIE && document.compatMode === 'BackCompat'), - noFixed = (isMobile || isBackCompatIE || isIE6), - screenX = null, screenX2 = null, screenY = null, scrollY = null, vRndX = null, vRndY = null, - windOffset = 1, - windMultiplier = 2, - flakeTypes = 6, - fixedForEverything = false, - opacitySupported = (function(){ - try { - document.createElement('div').style.opacity = '0.5'; - } catch(e) { - return false; - } - return true; - }()), - didInit = false, - docFrag = document.createDocumentFragment(); - - this.timers = []; - this.flakes = []; - this.disabled = false; - this.active = false; - this.meltFrameCount = 20; - this.meltFrames = []; - - this.events = (function() { - - var old = (!window.addEventListener && window.attachEvent), slice = Array.prototype.slice, - evt = { - add: (old?'attachEvent':'addEventListener'), - remove: (old?'detachEvent':'removeEventListener') - }; - - function getArgs(oArgs) { - var args = slice.call(oArgs), len = args.length; - if (old) { - args[1] = 'on' + args[1]; // prefix - if (len > 3) { - args.pop(); // no capture - } - } else if (len === 3) { - args.push(false); - } - return args; - } - - function apply(args, sType) { - var element = args.shift(), - method = [evt[sType]]; - if (old) { - element[method](args[0], args[1]); - } else { - element[method].apply(element, args); - } - } - - function addEvent() { - apply(getArgs(arguments), 'add'); - } - - function removeEvent() { - apply(getArgs(arguments), 'remove'); - } - - return { - add: addEvent, - remove: removeEvent - }; - - }()); - - function rnd(n,min) { - if (isNaN(min)) { - min = 0; - } - return (Math.random()*n)+min; - } - - function plusMinus(n) { - return (parseInt(rnd(2),10)===1?n*-1:n); - } - - this.randomizeWind = function() { - var i; - vRndX = plusMinus(rnd(s.vMaxX,0.2)); - vRndY = rnd(s.vMaxY,0.2); - if (this.flakes) { - for (i=0; i<this.flakes.length; i++) { - if (this.flakes[i].active) { - this.flakes[i].setVelocities(); - } - } - } - }; - - this.scrollHandler = function() { - var i; - // "attach" snowflakes to bottom of window if no absolute bottom value was given - scrollY = (s.flakeBottom?0:parseInt(window.scrollY||document.documentElement.scrollTop||document.body.scrollTop,10)); - if (isNaN(scrollY)) { - scrollY = 0; // Netscape 6 scroll fix - } - if (!fixedForEverything && !s.flakeBottom && s.flakes) { - for (i=s.flakes.length; i--;) { - if (s.flakes[i].active === 0) { - s.flakes[i].stick(); - } - } - } - }; - - this.resizeHandler = function() { - if (window.innerWidth || window.innerHeight) { - screenX = window.innerWidth-16-s.flakeRightOffset; - screenY = (s.flakeBottom?s.flakeBottom:window.innerHeight); - } else { - screenX = (document.documentElement.clientWidth||document.body.clientWidth||document.body.scrollWidth)-(!isIE?8:0)-s.flakeRightOffset; - screenY = s.flakeBottom?s.flakeBottom:(document.documentElement.clientHeight||document.body.clientHeight||document.body.scrollHeight); - } - screenX2 = parseInt(screenX/2,10); - }; - - this.resizeHandlerAlt = function() { - screenX = s.targetElement.offsetLeft+s.targetElement.offsetWidth-s.flakeRightOffset; - screenY = s.flakeBottom?s.flakeBottom:s.targetElement.offsetTop+s.targetElement.offsetHeight; - screenX2 = parseInt(screenX/2,10); - }; - - this.freeze = function() { - // pause animation - var i; - if (!s.disabled) { - s.disabled = 1; - } else { - return false; - } - for (i=s.timers.length; i--;) { - clearInterval(s.timers[i]); - } - }; - - this.resume = function() { - if (s.disabled) { - s.disabled = 0; - } else { - return false; - } - s.timerInit(); - }; - - this.toggleSnow = function() { - if (!s.flakes.length) { - // first run - s.start(); - } else { - s.active = !s.active; - if (s.active) { - s.show(); - s.resume(); - } else { - s.stop(); - s.freeze(); - } - } - }; - - this.stop = function() { - var i; - this.freeze(); - for (i=this.flakes.length; i--;) { - this.flakes[i].o.style.display = 'none'; - } - s.events.remove(window,'scroll',s.scrollHandler); - s.events.remove(window,'resize',s.resizeHandler); - if (s.freezeOnBlur) { - if (isIE) { - s.events.remove(document,'focusout',s.freeze); - s.events.remove(document,'focusin',s.resume); - } else { - s.events.remove(window,'blur',s.freeze); - s.events.remove(window,'focus',s.resume); - } - } - }; - - this.show = function() { - var i; - for (i=this.flakes.length; i--;) { - this.flakes[i].o.style.display = 'block'; - } - }; - - this.SnowFlake = function(parent,type,x,y) { - var s = this, storm = parent; - this.type = type; - this.x = x||parseInt(rnd(screenX-20),10); - this.y = (!isNaN(y)?y:-rnd(screenY)-12); - this.vX = null; - this.vY = null; - this.vAmpTypes = [1,1.2,1.4,1.6,1.8]; // "amplification" for vX/vY (based on flake size/type) - this.vAmp = this.vAmpTypes[this.type]; - this.melting = false; - this.meltFrameCount = storm.meltFrameCount; - this.meltFrames = storm.meltFrames; - this.meltFrame = 0; - this.twinkleFrame = 0; - this.active = 1; - this.fontSize = (10+(this.type/5)*10); - this.o = document.createElement('div'); - this.o.setAttribute('aria-hidden', 'true'); - this.o.setAttribute('role', 'presentation'); - this.o.innerHTML = storm.snowCharacter; - this.o.style.color = storm.snowColor; - this.o.style.position = (fixedForEverything?'fixed':'absolute'); - this.o.style.width = storm.flakeWidth+'px'; - this.o.style.height = storm.flakeHeight+'px'; - this.o.style.fontFamily = 'arial,verdana'; - this.o.style.cursor = 'default'; - this.o.style.overflow = 'hidden'; - this.o.style.fontWeight = 'normal'; - this.o.style.zIndex = storm.zIndex; - docFrag.appendChild(this.o); - - this.refresh = function() { - if (isNaN(s.x) || isNaN(s.y)) { - // safety check - return false; - } - s.o.style.left = s.x+'px'; - s.o.style.top = s.y+'px'; - }; - - this.stick = function() { - if (noFixed || (storm.targetElement !== document.documentElement && storm.targetElement !== document.body)) { - s.o.style.top = (screenY+scrollY-storm.flakeHeight)+'px'; - } else if (storm.flakeBottom) { - s.o.style.top = storm.flakeBottom+'px'; - } else { - s.o.style.display = 'none'; - s.o.style.top = 'auto'; - s.o.style.bottom = '0px'; - s.o.style.position = 'fixed'; - s.o.style.display = 'block'; - } - }; - - this.vCheck = function() { - if (s.vX>=0 && s.vX<0.2) { - s.vX = 0.2; - } else if (s.vX<0 && s.vX>-0.2) { - s.vX = -0.2; - } - if (s.vY>=0 && s.vY<0.2) { - s.vY = 0.2; - } - }; - - this.move = function() { - var vX = s.vX*windOffset, yDiff; - s.x += vX; - s.y += (s.vY*s.vAmp); - if (s.x >= screenX || screenX-s.x < storm.flakeWidth) { // X-axis scroll check - s.x = 0; - } else if (vX < 0 && s.x-storm.flakeLeftOffset < -storm.flakeWidth) { - s.x = screenX-storm.flakeWidth-1; // flakeWidth; - } - s.refresh(); - yDiff = screenY+scrollY-s.y; - if (yDiff<storm.flakeHeight) { - s.active = 0; - if (storm.snowStick) { - s.stick(); - } else { - s.recycle(); - } - } else { - if (storm.useMeltEffect && s.active && s.type < 3 && !s.melting && Math.random()>0.998) { - // ~1/1000 chance of melting mid-air, with each frame - s.melting = true; - s.melt(); - // only incrementally melt one frame - // s.melting = false; - } - if (storm.useTwinkleEffect) { - if (!s.twinkleFrame) { - if (Math.random()>0.9) { - s.twinkleFrame = parseInt(Math.random()*20,10); - } - } else { - s.twinkleFrame--; - s.o.style.visibility = (s.twinkleFrame && s.twinkleFrame%2===0?'hidden':'visible'); - } - } - } - }; - - this.animate = function() { - // main animation loop - // move, check status, die etc. - s.move(); - }; - - this.setVelocities = function() { - s.vX = vRndX+rnd(storm.vMaxX*0.12,0.1); - s.vY = vRndY+rnd(storm.vMaxY*0.12,0.1); - }; - - this.setOpacity = function(o,opacity) { - if (!opacitySupported) { - return false; - } - o.style.opacity = opacity; - }; - - this.melt = function() { - if (!storm.useMeltEffect || !s.melting) { - s.recycle(); - } else { - if (s.meltFrame < s.meltFrameCount) { - s.setOpacity(s.o,s.meltFrames[s.meltFrame]); - s.o.style.fontSize = s.fontSize-(s.fontSize*(s.meltFrame/s.meltFrameCount))+'px'; - s.o.style.lineHeight = storm.flakeHeight+2+(storm.flakeHeight*0.75*(s.meltFrame/s.meltFrameCount))+'px'; - s.meltFrame++; - } else { - s.recycle(); - } - } - }; - - this.recycle = function() { - s.o.style.display = 'none'; - s.o.style.position = (fixedForEverything?'fixed':'absolute'); - s.o.style.bottom = 'auto'; - s.setVelocities(); - s.vCheck(); - s.meltFrame = 0; - s.melting = false; - s.setOpacity(s.o,1); - s.o.style.padding = '0px'; - s.o.style.margin = '0px'; - s.o.style.fontSize = s.fontSize+'px'; - s.o.style.lineHeight = (storm.flakeHeight+2)+'px'; - s.o.style.textAlign = 'center'; - s.o.style.verticalAlign = 'baseline'; - s.x = parseInt(rnd(screenX-storm.flakeWidth-20),10); - s.y = parseInt(rnd(screenY)*-1,10)-storm.flakeHeight; - s.refresh(); - s.o.style.display = 'block'; - s.active = 1; - }; - - this.recycle(); // set up x/y coords etc. - this.refresh(); - - }; - - this.snow = function() { - var active = 0, used = 0, waiting = 0, flake = null, i; - for (i=s.flakes.length; i--;) { - if (s.flakes[i].active === 1) { - s.flakes[i].move(); - active++; - } else if (s.flakes[i].active === 0) { - used++; - } else { - waiting++; - } - if (s.flakes[i].melting) { - s.flakes[i].melt(); - } - } - if (active<s.flakesMaxActive) { - flake = s.flakes[parseInt(rnd(s.flakes.length),10)]; - if (flake.active === 0) { - flake.melting = true; - } - } - }; - - this.mouseMove = function(e) { - if (!s.followMouse) { - return true; - } - var x = parseInt(e.clientX,10); - if (x<screenX2) { - windOffset = -windMultiplier+(x/screenX2*windMultiplier); - } else { - x -= screenX2; - windOffset = (x/screenX2)*windMultiplier; - } - }; - - this.createSnow = function(limit,allowInactive) { - var i; - for (i=0; i<limit; i++) { - s.flakes[s.flakes.length] = new s.SnowFlake(s,parseInt(rnd(flakeTypes),10)); - if (allowInactive || i>s.flakesMaxActive) { - s.flakes[s.flakes.length-1].active = -1; - } - } - storm.targetElement.appendChild(docFrag); - }; - - this.timerInit = function() { - s.timers = (!isWin98?[setInterval(s.snow,s.animationInterval)]:[setInterval(s.snow,s.animationInterval*3),setInterval(s.snow,s.animationInterval)]); - }; - - this.init = function() { - var i; - for (i=0; i<s.meltFrameCount; i++) { - s.meltFrames.push(1-(i/s.meltFrameCount)); - } - s.randomizeWind(); - s.createSnow(s.flakesMax); // create initial batch - s.events.add(window,'resize',s.resizeHandler); - s.events.add(window,'scroll',s.scrollHandler); - if (s.freezeOnBlur) { - if (isIE) { - s.events.add(document,'focusout',s.freeze); - s.events.add(document,'focusin',s.resume); - } else { - s.events.add(window,'blur',s.freeze); - s.events.add(window,'focus',s.resume); - } - } - s.resizeHandler(); - s.scrollHandler(); - if (s.followMouse) { - s.events.add(isIE?document:window,'mousemove',s.mouseMove); - } - s.animationInterval = Math.max(20,s.animationInterval); - s.timerInit(); - }; - - this.start = function(bFromOnLoad) { - if (!didInit) { - didInit = true; - } else if (bFromOnLoad) { - // already loaded and running - return true; - } - if (typeof s.targetElement === 'string') { - var targetID = s.targetElement; - s.targetElement = document.getElementById(targetID); - if (!s.targetElement) { - throw new Error('Snowstorm: Unable to get targetElement "'+targetID+'"'); - } - } - if (!s.targetElement) { - s.targetElement = (!isIE?(document.documentElement?document.documentElement:document.body):document.body); - } - if (s.targetElement !== document.documentElement && s.targetElement !== document.body) { - s.resizeHandler = s.resizeHandlerAlt; // re-map handler to get element instead of screen dimensions - } - s.resizeHandler(); // get bounding box elements - s.usePositionFixed = (s.usePositionFixed && !noFixed); // whether or not position:fixed is supported - fixedForEverything = s.usePositionFixed; - if (screenX && screenY && !s.disabled) { - s.init(); - s.active = true; - } - }; - - function doDelayedStart() { - window.setTimeout(function() { - s.start(true); - }, 20); - // event cleanup - s.events.remove(isIE?document:window,'mousemove',doDelayedStart); - } - - function doStart() { - if (!s.excludeMobile || !isMobile) { - if (s.freezeOnBlur) { - s.events.add(isIE?document:window,'mousemove',doDelayedStart); - } else { - doDelayedStart(); - } - } - // event cleanup - s.events.remove(window, 'load', doStart); - } - - // hooks for starting the snow - if (s.autoStart) { - s.events.add(window, 'load', doStart, false); - } - - return this; - -}(window, document)); |