highslide.js

幻灯片 幻灯片 幻灯片 幻灯片 幻灯片 幻灯片 幻灯片

		
		} else { // first img within anchor
			for (i = 0; i < a.childNodes.length; i++) {
				if (a.childNodes[i].tagName && a.childNodes[i].tagName == 'IMG') {
					var el = a.childNodes[i];
					break;
				}			
			}
		}
		if (!el) el = a;
		
		// cancel other instances
		for (i = 0; i < hs.expanders.length; i++) {
			if (hs.expanders[i] && hs.expanders[i].thumb != el && !hs.expanders[i].onLoadStarted) {
				hs.expanders[i].cancelLoading();
			}
		}
		
		// check if already open
		for (i = 0; i < hs.expanders.length; i++) {
			if (hs.expanders[i] && hs.expanders[i].thumb == el) {
				hs.expanders[i].focus();
				return false;
			}
		}
		
		this.key = hs.expandedImagesCounter++;
		hs.expanders[this.key] = this;
		if (contentType == 'html') {
			this.isHtml = true;
			this.contentType = 'html';
		} else {
			this.isImage = true;
			this.contentType = 'image';
		}
		this.a = a;
		
		
		// override inline parameters
		for (i = 0; i < hs.overrides.length; i++) {
			var name = hs.overrides[i];
			if (params && params[name] != undefined) this[name] = params[name];
			else this[name] = hs[name];
		}
		
		// check slideshowGroup
		if (hs.toggleImagesGroup != null && hs.toggleImagesGroup != this.slideshowGroup) {
			hs.toggleImagesGroup = null;
			hs.expanders[this.key] = null;
			return;
		}
		
		
		this.thumbsUserSetId = el.id || a.id;
		this.thumb = el;		
		
		this.overlays = new Array();

		var pos = hs.position(el); 
				
		// instanciate the wrapper
		this.wrapper = hs.createElement(
			'div',
			{
				id: 'highslide-wrapper-'+ this.key,
				className: this.wrapperClassName
			},
			{
				visibility: 'hidden',
				position: 'absolute',
				zIndex: hs.zIndexCounter++
			}
		);
		
		// store properties of the thumbnail
		this.thumbWidth = el.width ? el.width : el.offsetWidth;		
		this.thumbHeight = el.height ? el.height : el.offsetHeight;
		this.thumbLeft = pos.x;
		this.thumbTop = pos.y;
		this.thumbClass = el.className;
		
		// thumb borders
		this.thumbOffsetBorderW = (this.thumb.offsetWidth - this.thumbWidth) / 2;
		this.thumbOffsetBorderH = (this.thumb.offsetHeight - this.thumbHeight) / 2;
		
		if (this.isImage) this.imageCreate();
	
		return false;
	
	} catch(e) {
		return true;
	}
	
};

HsExpander.prototype.displayLoading = function() {
	if (this.onLoadStarted) return;
		
	this.originalCursor = this.a.style.cursor;
	this.a.style.cursor = 'wait';
	
	this.loading = hs.createElement('a',
		{
			className: 'highslide-loading',
			title: hs.loadingTitle,
			href: 'javascript:hs.expanders['+ this.key +'].cancelLoading()',
			innerHTML: hs.loadingText			
		},
		{
			position: 'absolute',
			visibility: 'hidden'
		}, hs.container);
		
	if (hs.ie) this.loading.style.filter = 'alpha(opacity='+ (100*hs.loadingOpacity) +')';
	else this.loading.style.opacity = hs.loadingOpacity;
	
	this.loading.style.left = (this.thumbLeft + this.thumbOffsetBorderW 
		+ (this.thumbWidth - this.loading.offsetWidth) / 2) +'px';
	this.loading.style.top = (this.thumbTop 
		+ (this.thumbHeight - this.loading.offsetHeight) / 2) +'px';
	setTimeout(
		"if (hs.expanders["+ this.key +"] && hs.expanders["+ this.key +"].loading) "
		+ "hs.expanders["+ this.key +"].loading.style.visibility = 'visible';", 
		100
	);
};

HsExpander.prototype.imageCreate = function() {
	var img = document.createElement('img');
	var key = this.key;

	var img = document.createElement('img');
    this.content = img;
    img.onload = function () { if (hs.expanders[key]) hs.expanders[key].onLoad();  };
    img.className = 'highslide-image '+ this.thumbClass;
    img.style.visibility = 'hidden'; // prevent flickering in IE
    img.style.display = 'block';
	img.style.position = 'absolute';
    img.style.zIndex = 3;
    img.title = hs.restoreTitle;
    img.onmouseover = function () { 
    	if (hs.expanders[key]) hs.expanders[key].onMouseOver(); 
    };
    img.onmouseout = function (e) { 
    	var rel = e ? e.relatedTarget : event.toElement;
		if (hs.expanders[key]) hs.expanders[key].onMouseOut(rel);
	};
    if (hs.safari) hs.container.appendChild(img);
	img.src = unescape(hs.getSrc(this.a));//获得图片的URL地址并对编码后的中文进行解码。将中文解码后JS可以正常的访问中文文件。
	
	this.displayLoading();
};

HsExpander.prototype.onLoad = function() {	
	try { 
	
		if (!this.content) return;
		// prevent looping on certain Gecko engines:
		if (this.onLoadStarted) return;
		else this.onLoadStarted = true;
		
			   
		if (this.loading) {
			hs.container.removeChild(this.loading);
			this.loading = null;
			this.a.style.cursor = this.originalCursor || '';
		}
		
		if (this.isImage) {
			this.newWidth = this.content.width;
			this.newHeight = this.content.height;
			this.fullExpandWidth = this.newWidth;
			this.fullExpandHeight = this.newHeight;
			this.content.width = this.thumbWidth;
			this.content.height = this.thumbHeight;
		}
		
		// identify caption div
		var modMarginBottom = hs.marginBottom;
		if (this.captionId && hs.$(this.captionId)) {
			this.caption = hs.$(this.captionId).cloneNode(true);
		} else if (this.thumbsUserSetId && hs.$('caption-for-'+ this.thumbsUserSetId)) {
			this.caption = hs.$('caption-for-'+ this.thumbsUserSetId).cloneNode(true);
		}
		if (this.caption) {
			modMarginBottom += this.spaceForCaption;
			this.caption.id = null;
		}
		
		this.wrapper.appendChild(this.content);
		this.content.style.position = 'relative'; // Saf
		if (this.caption) this.wrapper.appendChild(this.caption);
		this.wrapper.style.left = this.thumbLeft +'px';
		this.wrapper.style.top = this.thumbTop +'px';
		hs.container.appendChild(this.wrapper);
		if (this.swfObject) this.swfObject.write(this.flashContainerId);
		
		// correct for borders
		this.offsetBorderW = (this.wrapper.offsetWidth - this.thumbWidth) / 2;
		this.offsetBorderH = (this.wrapper.offsetHeight - this.thumbHeight) / 2;
		var modMarginRight = hs.marginRight + 2 * this.offsetBorderW;
		modMarginBottom += 2 * this.offsetBorderH;
		
		var ratio = this.newWidth / this.newHeight;
		var minWidth = this.allowSizeReduction ? this.minWidth : this.newWidth;
		var minHeight = this.allowSizeReduction ? this.minHeight : this.newHeight;
		
		var justify = { x: 'auto', y: 'auto' };
		if (this.align == 'center') {
			justify.x = 'center';
			justify.y = 'center';
		} else {
			if (this.anchor.match(/^top/)) justify.y = null;
			if (this.anchor.match(/right$/)) justify.x = 'max';
			if (this.anchor.match(/^bottom/)) justify.y = 'max';
			if (this.anchor.match(/left$/)) justify.x = null;
		}
		
		client = new hs.clientInfo();
		
		
		// justify
		this.x = { 
			min: parseInt(this.thumbLeft) - this.offsetBorderW + this.thumbOffsetBorderW,
			span: this.newWidth,
			minSpan: this.newWidth < minWidth ? this.newWidth : minWidth,
			justify: justify.x, 
			marginMin: hs.marginLeft, 
			marginMax: modMarginRight,
			scroll: client.scrollLeft,
			clientSpan: client.width,
			thumbSpan: this.thumbWidth
		};
		var oldRight = this.x.min + parseInt(this.thumbWidth);
		this.x = this.justify(this.x);

		this.y = { 
			min: parseInt(this.thumbTop) - this.offsetBorderH + this.thumbOffsetBorderH,
			span: this.newHeight,
			minSpan: this.newHeight < minHeight ? this.newHeight : minHeight,
			justify: justify.y, 
			marginMin: hs.marginTop, 
			marginMax: modMarginBottom, 
			scroll: client.scrollTop,
			clientSpan: client.height,
			thumbSpan: this.thumbHeight
		};
		var oldBottom = this.y.min + parseInt(this.thumbHeight);        
		this.y = this.justify(this.y);

		if (this.isHtml) this.htmlSizeOperations();


		// correct ratio
		if (this.isImage) this.correctRatio(ratio);

		var x = this.x;
		var y = this.y;
	

		// Selectbox bug
		var imgPos = {x: x.min - 20, y: y.min - 20, w: x.span + 40, h: y.span + 40 + this.spaceForCaption};
		hs.hideSelects = (hs.ie && hs.ieVersion() < 7);
		if (hs.hideSelects) this.showHideElements('SELECT', 'hidden', imgPos);
		// Iframes bug
		hs.hideIframes = (window.opera || navigator.vendor == 'KDE' || (hs.ie && hs.ieVersion() < 5.5));
		if (hs.hideIframes) this.showHideElements('IFRAME', 'hidden', imgPos);
		
		// Apply size change
		
		this.changeSize(
			this.thumbLeft + this.thumbOffsetBorderW - this.offsetBorderW,
			this.thumbTop + this.thumbOffsetBorderH - this.offsetBorderH,
			this.thumbWidth,
			this.thumbHeight,
			x.min,
			y.min,
			x.span,
			y.span, 
			hs.expandDuration,
			hs.expandSteps
		);			
		
		setTimeout(
			"if (hs.expanders["+ this.key +"])"
			+ "hs.expanders["+ this.key +"].onExpanded()",
			hs.expandDuration
		);

	} catch(e) {
		if (hs.expanders[this.key] && hs.expanders[this.key].a) 
			window.location.href = hs.getSrc(hs.expanders[this.key].a);
	}
};

HsExpander.prototype.changeSize = function(x1, y1, w1, h1, x2, y2, w2, h2, dur, steps) {
	dW = (w2 - w1) / steps;
	dH = (h2 - h1) / steps;
	dX = (x2 - x1) / steps;
	dY = (y2 - y1) / steps;
	
	for (i = 1; i < hs.expandSteps; i++) {
		w1 += dW;
		h1 += dH;
		x1 += dX;
		y1 += dY;
		
		setTimeout(
			"if (hs.expanders["+ this.key +"]) "
			+ "hs.expanders["+ this.key +"]."+ this.contentType +"SetSize("
			+ w1 +", "+ h1 +", "+ x1 +", "+ y1 +")", 
			Math.round(i * (dur / steps))
		);
	}
};

HsExpander.prototype.imageSetSize = function (width, height, left, top) {
	try {
		this.content.width = width;
		this.content.height = height;
		
		hs.setStyles ( this.wrapper,
			{
				'visibility': 'visible',
				'left': left +'px',
				'top': top +'px'
			}
		);
		this.content.style.visibility = 'visible';
		if (this.thumb.tagName == 'IMG') this.thumb.style.visibility = 'hidden';
		
	} catch(e) {
		window.location.href = hs.getSrc(hs.expanders[this.key].a);
	}
};

HsExpander.prototype.onExpanded = function() {
	this[this.contentType +'SetSize'](this.x.span, this.y.span, this.x.min, this.y.min);
	this.isExpanded = true;
	this.focus();
	this.createCustomOverlays();
	if (hs.showCredits) this.writeCredits();
	
	if (this.caption) this.writeCaption();
	//else if (this.outlineType) this.writeOutline();
	if (!this.caption || !hs.slideInOutline && this.outlineType) this.writeOutline();
	
	if (this.fullExpandWidth > this.x.span) this.createFullExpand();
	
	if (!this.caption && !this.outlineType) this.onDisplayFinished();
};

HsExpander.prototype.onDisplayFinished = function() {
	// preload next
	var nextA = hs.getAdjacentAnchor(this.key, 1);
	if (nextA) {
		var img = document.createElement('img');
		img.src = hs.getSrc(nextA);
	}
};

HsExpander.prototype.justify = function (p) {
	if (p.justify == 'auto' || p.justify == 'center') {
		var hasMovedMin = false;
		var allowReduce = true;
		// calculate p.min
		if (p.justify == 'center') p.min = Math.round(p.scroll + (p.clientSpan - p.span - p.marginMax) / 2);
		else p.min = Math.round(p.min - ((p.span - p.thumbSpan) / 2)); // auto
		if (p.min < p.scroll + p.marginMin) {
			p.min = p.scroll + p.marginMin;
			hasMovedMin = true;		
		}
		
		if (p.span < p.minSpan) {
			p.span = p.minSpan;
			allowReduce = false;
		}
		// calculate right/newWidth
		if (p.min + p.span > p.scroll + p.clientSpan - p.marginMax) {
			if (hasMovedMin && allowReduce) p.span = p.clientSpan - p.marginMin - p.marginMax; // can't expand more
			else if (p.span < p.clientSpan - p.marginMin - p.marginMax) { // move newTop up
				p.min = p.scroll + p.clientSpan - p.span - p.marginMin - p.marginMax;
			} else { // image larger than client
				p.min = p.scroll + p.marginMin;
				if (allowReduce) p.span = p.clientSpan - p.marginMin - p.marginMax;
			}
			
		}
		
		if (p.span < p.minSpan) {
			p.span = p.minSpan;
			allowReduce = false;
		}
		
	} else if (p.justify == 'max') {
		p.min = Math.floor(p.min - p.span + p.thumbSpan);
	}
	
	if (p.min < p.marginMin) {
		tmpMin = p.min;
		p.min = p.marginMin; 
		if (allowReduce) p.span = p.span - (p.min - tmpMin);
	}
	return p;
};

HsExpander.prototype.correctRatio = function(ratio) {
	var x = this.x;
	var y = this.y;
	var changed = false;
	if (x.span / y.span > ratio) { // width greater
		var tmpWidth = x.span;
		x.span = y.span * ratio;
		if (x.span < x.minSpan) { // below minWidth
			x.span = x.minSpan;	
			y.span = x.span / ratio;
		}
		changed = true;
	
	} else if (x.span / y.span < ratio) { // height greater
		var tmpHeight = y.span;
		y.span = x.span / ratio;
		changed = true;
	}
	
	if (changed) {
		x.min = parseInt(this.thumbLeft) - this.offsetBorderW + this.thumbOffsetBorderW;
		x.minSpan = x.span;
		this.x = this.justify(x);
		
		y.min = parseInt(this.thumbTop) - this.offsetBorderH + this.thumbOffsetBorderH;
		y.minSpan = y.span;
		this.y = this.justify(y);
	}
};

HsExpander.prototype.cancelLoading = function() {
	this.a.style.cursor = this.originalCursor;
	
	if (this.loading) {
		hs.container.removeChild(this.loading);
		this.loading = null;
	}
		
	hs.expanders[this.key] = null;
};

HsExpander.prototype.writeCredits = function () {
	var credits = hs.createElement('a',
		{
			href: hs.creditsHref,
			className: 'highslide-credits',
			innerHTML: hs.creditsText,
			title: hs.creditsTitle