From 2389d66da849798f8d4ec5f10e3b07c11da49185 Mon Sep 17 00:00:00 2001
From: Michael Francis <edude03@gmail.com>
Date: Sat, 28 May 2011 13:28:16 -0400
Subject: Initial Commit

---
 webroot/js/dd_belatedpng.js | 328 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 328 insertions(+)
 create mode 100755 webroot/js/dd_belatedpng.js

(limited to 'webroot/js/dd_belatedpng.js')

diff --git a/webroot/js/dd_belatedpng.js b/webroot/js/dd_belatedpng.js
new file mode 100755
index 0000000..7e38cc3
--- /dev/null
+++ b/webroot/js/dd_belatedpng.js
@@ -0,0 +1,328 @@
+/**
+* DD_belatedPNG: Adds IE6 support: PNG images for CSS background-image and HTML <IMG/>.
+* Author: Drew Diller
+* Email: drew.diller@gmail.com
+* URL: http://www.dillerdesign.com/experiment/DD_belatedPNG/
+* Version: 0.0.8a
+* Licensed under the MIT License: http://dillerdesign.com/experiment/DD_belatedPNG/#license
+*
+* Example usage:
+* DD_belatedPNG.fix('.png_bg'); // argument is a CSS selector
+* DD_belatedPNG.fixPng( someNode ); // argument is an HTMLDomElement
+**/
+
+/*
+PLEASE READ:
+Absolutely everything in this script is SILLY.  I know this.  IE's rendering of certain pixels doesn't make sense, so neither does this code!
+*/
+
+var DD_belatedPNG = {
+	ns: 'DD_belatedPNG',
+	imgSize: {},
+	delay: 10,
+	nodesFixed: 0,
+	createVmlNameSpace: function () { /* enable VML */
+		if (document.namespaces && !document.namespaces[this.ns]) {
+			document.namespaces.add(this.ns, 'urn:schemas-microsoft-com:vml');
+		}
+	},
+	createVmlStyleSheet: function () { /* style VML, enable behaviors */
+		/*
+			Just in case lots of other developers have added
+			lots of other stylesheets using document.createStyleSheet
+			and hit the 31-limit mark, let's not use that method!
+			further reading: http://msdn.microsoft.com/en-us/library/ms531194(VS.85).aspx
+		*/
+		var screenStyleSheet, printStyleSheet;
+		screenStyleSheet = document.createElement('style');
+		screenStyleSheet.setAttribute('media', 'screen');
+		document.documentElement.firstChild.insertBefore(screenStyleSheet, document.documentElement.firstChild.firstChild);
+		if (screenStyleSheet.styleSheet) {
+			screenStyleSheet = screenStyleSheet.styleSheet;
+			screenStyleSheet.addRule(this.ns + '\\:*', '{behavior:url(#default#VML)}');
+			screenStyleSheet.addRule(this.ns + '\\:shape', 'position:absolute;');
+			screenStyleSheet.addRule('img.' + this.ns + '_sizeFinder', 'behavior:none; border:none; position:absolute; z-index:-1; top:-10000px; visibility:hidden;'); /* large negative top value for avoiding vertical scrollbars for large images, suggested by James O'Brien, http://www.thanatopsic.org/hendrik/ */
+			this.screenStyleSheet = screenStyleSheet;
+			
+			/* Add a print-media stylesheet, for preventing VML artifacts from showing up in print (including preview). */
+			/* Thanks to Rémi Prévost for automating this! */
+			printStyleSheet = document.createElement('style');
+			printStyleSheet.setAttribute('media', 'print');
+			document.documentElement.firstChild.insertBefore(printStyleSheet, document.documentElement.firstChild.firstChild);
+			printStyleSheet = printStyleSheet.styleSheet;
+			printStyleSheet.addRule(this.ns + '\\:*', '{display: none !important;}');
+			printStyleSheet.addRule('img.' + this.ns + '_sizeFinder', '{display: none !important;}');
+		}
+	},
+	readPropertyChange: function () {
+		var el, display, v;
+		el = event.srcElement;
+		if (!el.vmlInitiated) {
+			return;
+		}
+		if (event.propertyName.search('background') != -1 || event.propertyName.search('border') != -1) {
+			DD_belatedPNG.applyVML(el);
+		}
+		if (event.propertyName == 'style.display') {
+			display = (el.currentStyle.display == 'none') ? 'none' : 'block';
+			for (v in el.vml) {
+				if (el.vml.hasOwnProperty(v)) {
+					el.vml[v].shape.style.display = display;
+				}
+			}
+		}
+		if (event.propertyName.search('filter') != -1) {
+			DD_belatedPNG.vmlOpacity(el);
+		}
+	},
+	vmlOpacity: function (el) {
+		if (el.currentStyle.filter.search('lpha') != -1) {
+			var trans = el.currentStyle.filter;
+			trans = parseInt(trans.substring(trans.lastIndexOf('=')+1, trans.lastIndexOf(')')), 10)/100;
+			el.vml.color.shape.style.filter = el.currentStyle.filter; /* complete guesswork */
+			el.vml.image.fill.opacity = trans; /* complete guesswork */
+		}
+	},
+	handlePseudoHover: function (el) {
+		setTimeout(function () { /* wouldn't work as intended without setTimeout */
+			DD_belatedPNG.applyVML(el);
+		}, 1);
+	},
+	/**
+	* This is the method to use in a document.
+	* @param {String} selector - REQUIRED - a CSS selector, such as '#doc .container'
+	**/
+	fix: function (selector) {
+		if (this.screenStyleSheet) {
+			var selectors, i;
+			selectors = selector.split(','); /* multiple selectors supported, no need for multiple calls to this anymore */
+			for (i=0; i<selectors.length; i++) {
+				this.screenStyleSheet.addRule(selectors[i], 'behavior:expression(DD_belatedPNG.fixPng(this))'); /* seems to execute the function without adding it to the stylesheet - interesting... */
+			}
+		}
+	},
+	applyVML: function (el) {
+		el.runtimeStyle.cssText = '';
+		this.vmlFill(el);
+		this.vmlOffsets(el);
+		this.vmlOpacity(el);
+		if (el.isImg) {
+			this.copyImageBorders(el);
+		}
+	},
+	attachHandlers: function (el) {
+		var self, handlers, handler, moreForAs, a, h;
+		self = this;
+		handlers = {resize: 'vmlOffsets', move: 'vmlOffsets'};
+		if (el.nodeName == 'A') {
+			moreForAs = {mouseleave: 'handlePseudoHover', mouseenter: 'handlePseudoHover', focus: 'handlePseudoHover', blur: 'handlePseudoHover'};
+			for (a in moreForAs) {			
+				if (moreForAs.hasOwnProperty(a)) {
+					handlers[a] = moreForAs[a];
+				}
+			}
+		}
+		for (h in handlers) {
+			if (handlers.hasOwnProperty(h)) {
+				handler = function () {
+					self[handlers[h]](el);
+				};
+				el.attachEvent('on' + h, handler);
+			}
+		}
+		el.attachEvent('onpropertychange', this.readPropertyChange);
+	},
+	giveLayout: function (el) {
+		el.style.zoom = 1;
+		if (el.currentStyle.position == 'static') {
+			el.style.position = 'relative';
+		}
+	},
+	copyImageBorders: function (el) {
+		var styles, s;
+		styles = {'borderStyle':true, 'borderWidth':true, 'borderColor':true};
+		for (s in styles) {
+			if (styles.hasOwnProperty(s)) {
+				el.vml.color.shape.style[s] = el.currentStyle[s];
+			}
+		}
+	},
+	vmlFill: function (el) {
+		if (!el.currentStyle) {
+			return;
+		} else {
+			var elStyle, noImg, lib, v, img, imgLoaded;
+			elStyle = el.currentStyle;
+		}
+		for (v in el.vml) {
+			if (el.vml.hasOwnProperty(v)) {
+				el.vml[v].shape.style.zIndex = elStyle.zIndex;
+			}
+		}
+		el.runtimeStyle.backgroundColor = '';
+		el.runtimeStyle.backgroundImage = '';
+		noImg = true;
+		if (elStyle.backgroundImage != 'none' || el.isImg) {
+			if (!el.isImg) {
+				el.vmlBg = elStyle.backgroundImage;
+				el.vmlBg = el.vmlBg.substr(5, el.vmlBg.lastIndexOf('")')-5);
+			}
+			else {
+				el.vmlBg = el.src;
+			}
+			lib = this;
+			if (!lib.imgSize[el.vmlBg]) { /* determine size of loaded image */
+				img = document.createElement('img');
+				lib.imgSize[el.vmlBg] = img;
+				img.className = lib.ns + '_sizeFinder';
+				img.runtimeStyle.cssText = 'behavior:none; position:absolute; left:-10000px; top:-10000px; border:none; margin:0; padding:0;'; /* make sure to set behavior to none to prevent accidental matching of the helper elements! */
+				imgLoaded = function () {
+					this.width = this.offsetWidth; /* weird cache-busting requirement! */
+					this.height = this.offsetHeight;
+					lib.vmlOffsets(el);
+				};
+				img.attachEvent('onload', imgLoaded);
+				img.src = el.vmlBg;
+				img.removeAttribute('width');
+				img.removeAttribute('height');
+				document.body.insertBefore(img, document.body.firstChild);
+			}
+			el.vml.image.fill.src = el.vmlBg;
+			noImg = false;
+		}
+		el.vml.image.fill.on = !noImg;
+		el.vml.image.fill.color = 'none';
+		el.vml.color.shape.style.backgroundColor = elStyle.backgroundColor;
+		el.runtimeStyle.backgroundImage = 'none';
+		el.runtimeStyle.backgroundColor = 'transparent';
+	},
+	/* IE can't figure out what do when the offsetLeft and the clientLeft add up to 1, and the VML ends up getting fuzzy... so we have to push/enlarge things by 1 pixel and then clip off the excess */
+	vmlOffsets: function (el) {
+		var thisStyle, size, fudge, makeVisible, bg, bgR, dC, altC, b, c, v;
+		thisStyle = el.currentStyle;
+		size = {'W':el.clientWidth+1, 'H':el.clientHeight+1, 'w':this.imgSize[el.vmlBg].width, 'h':this.imgSize[el.vmlBg].height, 'L':el.offsetLeft, 'T':el.offsetTop, 'bLW':el.clientLeft, 'bTW':el.clientTop};
+		fudge = (size.L + size.bLW == 1) ? 1 : 0;
+		/* vml shape, left, top, width, height, origin */
+		makeVisible = function (vml, l, t, w, h, o) {
+			vml.coordsize = w+','+h;
+			vml.coordorigin = o+','+o;
+			vml.path = 'm0,0l'+w+',0l'+w+','+h+'l0,'+h+' xe';
+			vml.style.width = w + 'px';
+			vml.style.height = h + 'px';
+			vml.style.left = l + 'px';
+			vml.style.top = t + 'px';
+		};
+		makeVisible(el.vml.color.shape, (size.L + (el.isImg ? 0 : size.bLW)), (size.T + (el.isImg ? 0 : size.bTW)), (size.W-1), (size.H-1), 0);
+		makeVisible(el.vml.image.shape, (size.L + size.bLW), (size.T + size.bTW), (size.W), (size.H), 1 );
+		bg = {'X':0, 'Y':0};
+		if (el.isImg) {
+			bg.X = parseInt(thisStyle.paddingLeft, 10) + 1;
+			bg.Y = parseInt(thisStyle.paddingTop, 10) + 1;
+		}
+		else {
+			for (b in bg) {
+				if (bg.hasOwnProperty(b)) {
+					this.figurePercentage(bg, size, b, thisStyle['backgroundPosition'+b]);
+				}
+			}
+		}
+		el.vml.image.fill.position = (bg.X/size.W) + ',' + (bg.Y/size.H);
+		bgR = thisStyle.backgroundRepeat;
+		dC = {'T':1, 'R':size.W+fudge, 'B':size.H, 'L':1+fudge}; /* these are defaults for repeat of any kind */
+		altC = { 'X': {'b1': 'L', 'b2': 'R', 'd': 'W'}, 'Y': {'b1': 'T', 'b2': 'B', 'd': 'H'} };
+		if (bgR != 'repeat' || el.isImg) {
+			c = {'T':(bg.Y), 'R':(bg.X+size.w), 'B':(bg.Y+size.h), 'L':(bg.X)}; /* these are defaults for no-repeat - clips down to the image location */
+			if (bgR.search('repeat-') != -1) { /* now let's revert to dC for repeat-x or repeat-y */
+				v = bgR.split('repeat-')[1].toUpperCase();
+				c[altC[v].b1] = 1;
+				c[altC[v].b2] = size[altC[v].d];
+			}
+			if (c.B > size.H) {
+				c.B = size.H;
+			}
+			el.vml.image.shape.style.clip = 'rect('+c.T+'px '+(c.R+fudge)+'px '+c.B+'px '+(c.L+fudge)+'px)';
+		}
+		else {
+			el.vml.image.shape.style.clip = 'rect('+dC.T+'px '+dC.R+'px '+dC.B+'px '+dC.L+'px)';
+		}
+	},
+	figurePercentage: function (bg, size, axis, position) {
+		var horizontal, fraction;
+		fraction = true;
+		horizontal = (axis == 'X');
+		switch(position) {
+			case 'left':
+			case 'top':
+				bg[axis] = 0;
+				break;
+			case 'center':
+				bg[axis] = 0.5;
+				break;
+			case 'right':
+			case 'bottom':
+				bg[axis] = 1;
+				break;
+			default:
+				if (position.search('%') != -1) {
+					bg[axis] = parseInt(position, 10) / 100;
+				}
+				else {
+					fraction = false;
+				}
+		}
+		bg[axis] = Math.ceil(  fraction ? ( (size[horizontal?'W': 'H'] * bg[axis]) - (size[horizontal?'w': 'h'] * bg[axis]) ) : parseInt(position, 10)  );
+		if (bg[axis] % 2 === 0) {
+			bg[axis]++;
+		}
+		return bg[axis];
+	},
+	fixPng: function (el) {
+		el.style.behavior = 'none';
+		var lib, els, nodeStr, v, e;
+		if (el.nodeName == 'BODY' || el.nodeName == 'TD' || el.nodeName == 'TR') { /* elements not supported yet */
+			return;
+		}
+		el.isImg = false;
+		if (el.nodeName == 'IMG') {
+			if(el.src.toLowerCase().search(/\.png$/) != -1) {
+				el.isImg = true;
+				el.style.visibility = 'hidden';
+			}
+			else {
+				return;
+			}
+		}
+		else if (el.currentStyle.backgroundImage.toLowerCase().search('.png') == -1) {
+			return;
+		}
+		lib = DD_belatedPNG;
+		el.vml = {color: {}, image: {}};
+		els = {shape: {}, fill: {}};
+		for (v in el.vml) {
+			if (el.vml.hasOwnProperty(v)) {
+				for (e in els) {
+					if (els.hasOwnProperty(e)) {
+						nodeStr = lib.ns + ':' + e;
+						el.vml[v][e] = document.createElement(nodeStr);
+					}
+				}
+				el.vml[v].shape.stroked = false;
+				el.vml[v].shape.appendChild(el.vml[v].fill);
+				el.parentNode.insertBefore(el.vml[v].shape, el);
+			}
+		}
+		el.vml.image.shape.fillcolor = 'none'; /* Don't show blank white shapeangle when waiting for image to load. */
+		el.vml.image.fill.type = 'tile'; /* Makes image show up. */
+		el.vml.color.fill.on = false; /* Actually going to apply vml element's style.backgroundColor, so hide the whiteness. */
+		lib.attachHandlers(el);
+		lib.giveLayout(el);
+		lib.giveLayout(el.offsetParent);
+		el.vmlInitiated = true;
+		lib.applyVML(el); /* Render! */
+	}
+};
+try {
+	document.execCommand("BackgroundImageCache", false, true); /* TredoSoft Multiple IE doesn't like this, so try{} it */
+} catch(r) {}
+DD_belatedPNG.createVmlNameSpace();
+DD_belatedPNG.createVmlStyleSheet();
\ No newline at end of file
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