Magento product image vertical align middle /js/varien/product.js

product.js

/**
 * Magento
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Academic Free License (AFL 3.0)
 * that is bundled with this package in the file LICENSE_AFL.txt.
 * It is also available through the world-wide-web at this URL:
 * http://opensource.org/licenses/afl-3.0.php
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to [email protected] so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade Magento to newer
 * versions in the future. If you wish to customize Magento for your
 * needs please refer to http://www.magentocommerce.com for more information.
 *
 * @category    Varien
 * @package     js
 * @copyright   Copyright (c) 2011 Magento Inc. (http://www.magentocommerce.com)
 * @license     http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
 */
if(typeof Product=='undefined') {
    var Product = {};
}

/********************* IMAGE ZOOMER ***********************/

Product.Zoom = Class.create();
/**
 * Image zoom control
 *
 * @author      Magento Core Team <[email protected]>
 */
Product.Zoom.prototype = {
    initialize: function(imageEl, trackEl, handleEl, zoomInEl, zoomOutEl, hintEl){
        this.containerEl = $(imageEl).parentNode;
        this.imageEl = $(imageEl);
        this.handleEl = $(handleEl);
        this.trackEl = $(trackEl);
        this.hintEl = $(hintEl);

        this.containerDim = Element.getDimensions(this.containerEl);
        this.imageDim = Element.getDimensions(this.imageEl);

        this.imageDim.ratio = this.imageDim.width/this.imageDim.height;

        this.floorZoom = 1;

        if (this.imageDim.width > this.imageDim.height) {
            this.ceilingZoom = this.imageDim.width / this.containerDim.width;
        } else {
            this.ceilingZoom = this.imageDim.height / this.containerDim.height;
        }

        if (this.imageDim.width <= this.containerDim.width
            && this.imageDim.height <= this.containerDim.height) {
            this.trackEl.up().hide();
            this.hintEl.hide();
            this.containerEl.removeClassName('product-image-zoom');
            return;
        }

        this.imageX = 0;
        if (this.imageDim.width > this.containerDim.width) {
          myY = ((this.containerDim.width/this.imageDim.width)*this.imageDim.height)/2 - this.containerDim.height/2;
        } else { myY = 0; }
        this.imageY = '-' + myY;
        this.imageZoom = 1;

        this.sliderSpeed = 0;
        this.sliderAccel = 0;
        this.zoomBtnPressed = false;

        this.showFull = false;

        this.selects = document.getElementsByTagName('select');


        this.draggable = new Draggable(imageEl, {
            starteffect:false,
            reverteffect:false,
            endeffect:false,
            snap:this.contain.bind(this)
        });

        this.slider = new Control.Slider(handleEl, trackEl, {
            axis:'horizontal',
            minimum:0,
            maximum:Element.getDimensions(this.trackEl).width,
            alignX:0,
            increment:1,
            sliderValue:0,
            onSlide:this.scale.bind(this),
            onChange:this.scale.bind(this)
        });

        this.scale(0);

        Event.observe(this.imageEl, 'dblclick', this.toggleFull.bind(this));

        Event.observe($(zoomInEl), 'mousedown', this.startZoomIn.bind(this));
        Event.observe($(zoomInEl), 'mouseup', this.stopZooming.bind(this));
        Event.observe($(zoomInEl), 'mouseout', this.stopZooming.bind(this));

        Event.observe($(zoomOutEl), 'mousedown', this.startZoomOut.bind(this));
        Event.observe($(zoomOutEl), 'mouseup', this.stopZooming.bind(this));
        Event.observe($(zoomOutEl), 'mouseout', this.stopZooming.bind(this));
    },

    toggleFull: function () {
        this.showFull = !this.showFull;

        //Hide selects for IE6 only
        if (typeof document.body.style.maxHeight == "undefined")  {
            for (i=0; i<this.selects.length; i++) {
                this.selects[i].style.visibility = this.showFull ? 'hidden' : 'visible';
            }
        }
        val_scale = !this.showFull ? this.slider.value : 1;
        this.scale(val_scale);

        this.trackEl.style.visibility = this.showFull ? 'hidden' : 'visible';
        this.containerEl.style.overflow = this.showFull ? 'visible' : 'hidden';
        this.containerEl.style.zIndex = this.showFull ? '1000' : '9';

        return this;
    },

    scale: function (v) {
        var centerX  = (this.containerDim.width*(1-this.imageZoom)/2-this.imageX)/this.imageZoom;
        var centerY  = (this.containerDim.height*(1-this.imageZoom)/2-this.imageY)/this.imageZoom;
        var overSize = (this.imageDim.width > this.containerDim.width || this.imageDim.height > this.containerDim.height);

        this.imageZoom = this.floorZoom+(v*(this.ceilingZoom-this.floorZoom));

        if (overSize) {
            if (this.imageDim.width > this.containerDim.width) {
                this.imageEl.style.width = (this.imageZoom*this.containerDim.width)+'px';
            } else if (this.imageDim.height > this.containerDim.height) {
                this.imageEl.style.height = (this.imageZoom*this.containerDim.height)+'px';
            }

            if(this.containerDim.ratio){
                this.imageEl.style.height = (this.imageZoom*this.containerDim.width*this.containerDim.ratio)+'px'; // for safari
            }
        } else {
            this.slider.setDisabled();
        }

        this.imageX = this.containerDim.width*(1-this.imageZoom)/2-centerX*this.imageZoom;
        this.imageY = this.containerDim.height*(1-this.imageZoom)/2-centerY*this.imageZoom;

        this.contain(this.imageX, this.imageY, this.draggable);

        return true;
    },

    startZoomIn: function()
    {
        if (!this.slider.disabled) {
            this.zoomBtnPressed = true;
            this.sliderAccel = .002;
            this.periodicalZoom();
            this.zoomer = new PeriodicalExecuter(this.periodicalZoom.bind(this), .05);
        }
        return this;
    },

    startZoomOut: function()
    {
        if (!this.slider.disabled) {
            this.zoomBtnPressed = true;
            this.sliderAccel = -.002;
            this.periodicalZoom();
            this.zoomer = new PeriodicalExecuter(this.periodicalZoom.bind(this), .05);
        }
        return this;
    },

    stopZooming: function()
    {
        if (!this.zoomer || this.sliderSpeed==0) {
            return;
        }
        this.zoomBtnPressed = false;
        this.sliderAccel = 0;
    },

    periodicalZoom: function()
    {
        if (!this.zoomer) {
            return this;
        }

        if (this.zoomBtnPressed) {
            this.sliderSpeed += this.sliderAccel;
        } else {
            this.sliderSpeed /= 1.5;
            if (Math.abs(this.sliderSpeed)<.001) {
                this.sliderSpeed = 0;
                this.zoomer.stop();
                this.zoomer = null;
            }
        }
        this.slider.value += this.sliderSpeed;

        this.slider.setValue(this.slider.value);
        this.scale(this.slider.value);

        return this;
    },

    contain: function (x,y,draggable) {

        var dim = Element.getDimensions(draggable.element);

        var xMin = 0, xMax = this.containerDim.width-dim.width;
        var yMin = 0, yMax = this.containerDim.height-dim.height;

        x = x>xMin ? xMin : x;
        x = x<xMax ? xMax : x;
        y = y>yMin ? yMin : y;
        y = y<yMax ? yMax : y;

        if (this.containerDim.width > dim.width) {
            x = (this.containerDim.width/2) - (dim.width/2);
        }

        if (this.containerDim.height > dim.height) {
            y = (this.containerDim.height/2) - (dim.height/2);
        }

        this.imageX = x;
        this.imageY = y;

        this.imageEl.style.left = this.imageX+'px';
        this.imageEl.style.top = this.imageY+'px';

        return [x,y];
    }
}

/**************************** CONFIGURABLE PRODUCT **************************/
Product.Config = Class.create();
Product.Config.prototype = {
    initialize: function(config){
        this.config     = config;
        this.taxConfig  = this.config.taxConfig;
        this.settings   = $$('.super-attribute-select');
        this.state      = new Hash();
        this.priceTemplate = new Template(this.config.template);
        this.prices     = config.prices;

        this.settings.each(function(element){
            Event.observe(element, 'change', this.configure.bind(this))
        }.bind(this));

        // fill state
        this.settings.each(function(element){
            var attributeId = element.id.replace(/[a-z]*/, '');
            if(attributeId && this.config.attributes[attributeId]) {
                element.config = this.config.attributes[attributeId];
                element.attributeId = attributeId;
                this.state[attributeId] = false;
            }
        }.bind(this))

        // Init settings dropdown
        var childSettings = [];
        for(var i=this.settings.length-1;i>=0;i--){
            var prevSetting = this.settings[i-1] ? this.settings[i-1] : false;
            var nextSetting = this.settings[i+1] ? this.settings[i+1] : false;
            if(i==0){
                this.fillSelect(this.settings[i])
            }
            else {
                this.settings[i].disabled=true;
            }
            $(this.settings[i]).childSettings = childSettings.clone();
            $(this.settings[i]).prevSetting   = prevSetting;
            $(this.settings[i]).nextSetting   = nextSetting;
            childSettings.push(this.settings[i]);
        }
        
        // Set default values - from config and overwrite them by url values
        if (config.defaultValues) {
            this.values = config.defaultValues;
        }
        
        var separatorIndex = window.location.href.indexOf('#');
        if (separatorIndex != -1) {
            var paramsStr = window.location.href.substr(separatorIndex+1);
            var urlValues = paramsStr.toQueryParams();
            if (!this.values) {
                this.values = {};
            }
            for (var i in urlValues) {
                this.values[i] = urlValues[i];
            }
        }

        this.configureForValues();
        document.observe("dom:loaded", this.configureForValues.bind(this));
    },
    
    configureForValues: function () {
        if (this.values) {
            this.settings.each(function(element){
                var attributeId = element.attributeId;
                element.value = (typeof(this.values[attributeId]) == 'undefined')? '' : this.values[attributeId];
                this.configureElement(element);
            }.bind(this));
        }
    },

    configure: function(event){
        var element = Event.element(event);
        this.configureElement(element);
    },

    configureElement : function(element) {
        this.reloadOptionLabels(element);
        if(element.value){
            this.state[element.config.id] = element.value;
            if(element.nextSetting){
                element.nextSetting.disabled = false;
                this.fillSelect(element.nextSetting);
                this.resetChildren(element.nextSetting);
            }
        }
        else {
            this.resetChildren(element);
        }
        this.reloadPrice();
//      Calculator.updatePrice();
    },

    reloadOptionLabels: function(element){
        var selectedPrice;
        if(element.options[element.selectedIndex].config){
            selectedPrice = parseFloat(element.options[element.selectedIndex].config.price)
        }
        else{
            selectedPrice = 0;
        }
        for(var i=0;i<element.options.length;i++){
            if(element.options[i].config){
                element.options[i].text = this.getOptionLabel(element.options[i].config, element.options[i].config.price-selectedPrice);
            }
        }
    },

    resetChildren : function(element){
        if(element.childSettings) {
            for(var i=0;i<element.childSettings.length;i++){
                element.childSettings[i].selectedIndex = 0;
                element.childSettings[i].disabled = true;
                if(element.config){
                    this.state[element.config.id] = false;
                }
            }
        }
    },

    fillSelect: function(element){
        var attributeId = element.id.replace(/[a-z]*/, '');
        var options = this.getAttributeOptions(attributeId);
        this.clearSelect(element);
        element.options[0] = new Option(this.config.chooseText, '');

        var prevConfig = false;
        if(element.prevSetting){
            prevConfig = element.prevSetting.options[element.prevSetting.selectedIndex];
        }

        if(options) {
            var index = 1;
            for(var i=0;i<options.length;i++){
                var allowedProducts = [];
                if(prevConfig) {
                    for(var j=0;j<options[i].products.length;j++){
                        if(prevConfig.config.allowedProducts
                            && prevConfig.config.allowedProducts.indexOf(options[i].products[j])>-1){
                            allowedProducts.push(options[i].products[j]);
                        }
                    }
                } else {
                    allowedProducts = options[i].products.clone();
                }

                if(allowedProducts.size()>0){
                    options[i].allowedProducts = allowedProducts;
                    element.options[index] = new Option(this.getOptionLabel(options[i], options[i].price), options[i].id);
                    element.options[index].config = options[i];
                    index++;
                }
            }
        }
    },

    getOptionLabel: function(option, price){
        var price = parseFloat(price);
        if (this.taxConfig.includeTax) {
            var tax = price / (100 + this.taxConfig.defaultTax) * this.taxConfig.defaultTax;
            var excl = price - tax;
            var incl = excl*(1+(this.taxConfig.currentTax/100));
        } else {
            var tax = price * (this.taxConfig.currentTax / 100);
            var excl = price;
            var incl = excl + tax;
        }

        if (this.taxConfig.showIncludeTax || this.taxConfig.showBothPrices) {
            price = incl;
        } else {
            price = excl;
        }

        var str = option.label;
        if(price){
            if (this.taxConfig.showBothPrices) {
                str+= ' ' + this.formatPrice(excl, true) + ' (' + this.formatPrice(price, true) + ' ' + this.taxConfig.inclTaxTitle + ')';
            } else {
                str+= ' ' + this.formatPrice(price, true);
            }
        }
        return str;
    },

    formatPrice: function(price, showSign){
        var str = '';
        price = parseFloat(price);
        if(showSign){
            if(price<0){
                str+= '-';
                price = -price;
            }
            else{
                str+= '+';
            }
        }

        var roundedPrice = (Math.round(price*100)/100).toString();

        if (this.prices && this.prices[roundedPrice]) {
            str+= this.prices[roundedPrice];
        }
        else {
            str+= this.priceTemplate.evaluate({price:price.toFixed(2)});
        }
        return str;
    },

    clearSelect: function(element){
        for(var i=element.options.length-1;i>=0;i--){
            element.remove(i);
        }
    },

    getAttributeOptions: function(attributeId){
        if(this.config.attributes[attributeId]){
            return this.config.attributes[attributeId].options;
        }
    },

    reloadPrice: function(){
        var price    = 0;
        var oldPrice = 0;
        for(var i=this.settings.length-1;i>=0;i--){
            var selected = this.settings[i].options[this.settings[i].selectedIndex];
            if(selected.config){
                price    += parseFloat(selected.config.price);
                oldPrice += parseFloat(selected.config.oldPrice);
            }
        }

        optionsPrice.changePrice('config', {'price': price, 'oldPrice': oldPrice});
        optionsPrice.reload();

        return price;

        if($('product-price-'+this.config.productId)){
            $('product-price-'+this.config.productId).innerHTML = price;
        }
        this.reloadOldPrice();
    },

    reloadOldPrice: function(){
        if ($('old-price-'+this.config.productId)) {

            var price = parseFloat(this.config.oldPrice);
            for(var i=this.settings.length-1;i>=0;i--){
                var selected = this.settings[i].options[this.settings[i].selectedIndex];
                if(selected.config){
                    price+= parseFloat(selected.config.price);
                }
            }
            if (price < 0)
                price = 0;
            price = this.formatPrice(price);

            if($('old-price-'+this.config.productId)){
                $('old-price-'+this.config.productId).innerHTML = price;
            }

        }
    }
}


/**************************** SUPER PRODUCTS ********************************/

Product.Super = {};
Product.Super.Configurable = Class.create();

Product.Super.Configurable.prototype = {
    initialize: function(container, observeCss, updateUrl, updatePriceUrl, priceContainerId) {
        this.container = $(container);
        this.observeCss = observeCss;
        this.updateUrl = updateUrl;
        this.updatePriceUrl = updatePriceUrl;
        this.priceContainerId = priceContainerId;
        this.registerObservers();
    },
    registerObservers: function() {
        var elements = this.container.getElementsByClassName(this.observeCss);
        elements.each(function(element){
            Event.observe(element, 'change', this.update.bindAsEventListener(this));
        }.bind(this));
        return this;
    },
    update: function(event) {
        var elements = this.container.getElementsByClassName(this.observeCss);
        var parameters = Form.serializeElements(elements, true);

        new Ajax.Updater(this.container, this.updateUrl + '?ajax=1', {
                parameters:parameters,
                onComplete:this.registerObservers.bind(this)
        });
        var priceContainer = $(this.priceContainerId);
        if(priceContainer) {
            new Ajax.Updater(priceContainer, this.updatePriceUrl + '?ajax=1', {
                parameters:parameters
            });
        }
    }
}

/**************************** PRICE RELOADER ********************************/
Product.OptionsPrice = Class.create();
Product.OptionsPrice.prototype = {
    initialize: function(config) {
        this.productId          = config.productId;
        this.priceFormat        = config.priceFormat;
        this.includeTax         = config.includeTax;
        this.defaultTax         = config.defaultTax;
        this.currentTax         = config.currentTax;
        this.productPrice       = config.productPrice;
        this.showIncludeTax     = config.showIncludeTax;
        this.showBothPrices     = config.showBothPrices;
        this.productOldPrice    = config.productOldPrice;
        this.priceInclTax       = config.priceInclTax;
        this.priceExclTax       = config.priceExclTax;
        this.skipCalculate      = config.skipCalculate;//@deprecated after 1.5.1.0
        this.duplicateIdSuffix  = config.idSuffix;
        this.specialTaxPrice    = config.specialTaxPrice;

        this.oldPlusDisposition = config.oldPlusDisposition;
        this.plusDisposition    = config.plusDisposition;

        this.oldMinusDisposition = config.oldMinusDisposition;
        this.minusDisposition    = config.minusDisposition;

        this.optionPrices    = {};
        this.containers      = {};

        this.displayZeroPrice   = true;

        this.initPrices();
    },

    setDuplicateIdSuffix: function(idSuffix) {
        this.duplicateIdSuffix = idSuffix;
    },

    initPrices: function() {
        this.containers[0] = 'product-price-' + this.productId;
        this.containers[1] = 'bundle-price-' + this.productId;
        this.containers[2] = 'price-including-tax-' + this.productId;
        this.containers[3] = 'price-excluding-tax-' + this.productId;
        this.containers[4] = 'old-price-' + this.productId;
    },

    changePrice: function(key, price) {
        this.optionPrices[key] = price;
    },

    getOptionPrices: function() {
        var price = 0;
        var nonTaxable = 0;
        var oldPrice = 0;
        var priceInclTax = 0;
        var currentTax = this.currentTax; 
        $H(this.optionPrices).each(function(pair) {
            if ('undefined' != typeof(pair.value.price) && 'undefined' != typeof(pair.value.oldPrice)) {
                price += parseFloat(pair.value.price);
                oldPrice += parseFloat(pair.value.oldPrice);
            } else if (pair.key == 'nontaxable') {
                nonTaxable = pair.value;
            } else if (pair.key == 'priceInclTax') {
                priceInclTax += pair.value;
            } else if (pair.key == 'optionsPriceInclTax') {
                priceInclTax += pair.value * (100 + currentTax) / 100; 
            } else {
                price += parseFloat(pair.value);
                oldPrice += parseFloat(pair.value);
            }
        });
        var result = [price, nonTaxable, oldPrice, priceInclTax];
        return result;
    },

    reload: function() {
        var price;
        var formattedPrice;
        var optionPrices = this.getOptionPrices();
        var nonTaxable = optionPrices[1];
        var optionOldPrice = optionPrices[2];
        var priceInclTax = optionPrices[3];
        optionPrices = optionPrices[0];

        $H(this.containers).each(function(pair) {
            var _productPrice;
            var _plusDisposition;
            var _minusDisposition;
            if ($(pair.value)) {
                if (pair.value == 'old-price-'+this.productId && this.productOldPrice != this.productPrice) {
                    _productPrice = this.productOldPrice;
                    _plusDisposition = this.oldPlusDisposition;
                    _minusDisposition = this.oldMinusDisposition;
                } else {
                    _productPrice = this.productPrice;
                    _plusDisposition = this.plusDisposition;
                    _minusDisposition = this.minusDisposition;
                }

                if (pair.value == 'old-price-'+this.productId && optionOldPrice !== undefined) {
                    price = optionOldPrice+parseFloat(_productPrice);
                } else if (this.specialTaxPrice == 'true' && this.priceInclTax !== undefined && this.priceExclTax !== undefined) {
                    price = optionPrices+parseFloat(this.priceExclTax);
                    priceInclTax += this.priceInclTax;
                } else {
                    price = optionPrices+parseFloat(_productPrice);
                    priceInclTax += parseFloat(_productPrice) * (100 + this.currentTax) / 100;
                }

                if (this.specialTaxPrice == 'true') {
                    var excl = price;
                    var incl = priceInclTax;
                } else if (this.includeTax == 'true') {
                    // tax = tax included into product price by admin
                    var tax = price / (100 + this.defaultTax) * this.defaultTax;
                    var excl = price - tax;
                    var incl = excl*(1+(this.currentTax/100));
                } else {
                    var tax = price * (this.currentTax / 100);
                    var excl = price;
                    var incl = excl + tax;
                }

                excl += parseFloat(_plusDisposition);
                incl += parseFloat(_plusDisposition);
                excl -= parseFloat(_minusDisposition);
                incl -= parseFloat(_minusDisposition);

                //adding nontaxlable part of options
                excl += parseFloat(nonTaxable);
                incl += parseFloat(nonTaxable);

                if (pair.value == 'price-including-tax-'+this.productId) {
                    price = incl;
                } else if (pair.value == 'price-excluding-tax-'+this.productId) {
                    price = excl;
                } else if (pair.value == 'old-price-'+this.productId) {
                    if (this.showIncludeTax || this.showBothPrices) {
                        price = incl;
                    } else {
                        price = excl;
                    }
                } else {
                    if (this.showIncludeTax) {
                        price = incl;
                    } else {
                        price = excl;
                    }
                }

                if (price < 0) price = 0;

                if (price > 0 || this.displayZeroPrice) {
                    formattedPrice = this.formatPrice(price);
                } else {
                    formattedPrice = '';
                }

                if ($(pair.value).select('.price')[0]) {
                    $(pair.value).select('.price')[0].innerHTML = formattedPrice;
                    if ($(pair.value+this.duplicateIdSuffix) && $(pair.value+this.duplicateIdSuffix).select('.price')[0]) {
                        $(pair.value+this.duplicateIdSuffix).select('.price')[0].innerHTML = formattedPrice;
                    }
                } else {
                    $(pair.value).innerHTML = formattedPrice;
                    if ($(pair.value+this.duplicateIdSuffix)) {
                        $(pair.value+this.duplicateIdSuffix).innerHTML = formattedPrice;
                    }
                }
            };
        }.bind(this));
    },
    formatPrice: function(price) {
        return formatCurrency(price, this.priceFormat);
    }
}

I added lines 67 - 70 to start the image centered vertically instead of at the top.