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static/js/imgcropper.js
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627
static/js/imgcropper.js
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/*
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[Discuz!] (C)2001-2099 Comsenz Inc.
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This is NOT a freeware, use is subject to license terms
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$Id: imgcropper.js 30998 2012-07-06 07:22:08Z zhangguosheng $
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*/
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(function(){
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ImgCropper = function() {
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this.options = {
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opacity: 50,
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color: "",
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width: 0,
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height: 0,
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resize: false,
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right: "",
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left: "",
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up: "",
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down: "",
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rightDown: "",
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leftDown: "",
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rightUp: "",
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leftUp: "",
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min: false,
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minWidth: 50,
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minHeight: 50,
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scale: false,
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ratio: 0,
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Preview: "",
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viewWidth: 0,
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viewHeight: 0
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};
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this.setParameter.apply(this, arguments);
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};
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ImgCropper.prototype = {
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setParameter: function(container, handle, url, options) {
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this._container = $(container);
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this._layHandle = $(handle);
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this.url = url;
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this._layBase = this._container.appendChild(document.createElement("img"));
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this._layCropper = this._container.appendChild(document.createElement("img"));
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this._layCropper.onload = Util.bindApply(this, this.setPos);
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this._tempImg = document.createElement("img");
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this._tempImg.onload = Util.bindApply(this, this.setSize);
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this.options = Util.setOptions(this.options, options || {});
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this.opacity = Math.round(this.options.opacity);
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this.color = this.options.color;
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this.scale = !!this.options.scale;
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this.ratio = Math.max(this.options.ratio, 0);
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this.width = Math.round(this.options.width);
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this.height = Math.round(this.options.height);
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this.setLayHandle = true;
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var oPreview = $(this.options.Preview);
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if(oPreview){
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oPreview.style.position = "relative";
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oPreview.style.overflow = "hidden";
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this.viewWidth = Math.round(this.options.viewWidth);
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this.viewHeight = Math.round(this.options.viewHeight);
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this._view = oPreview.appendChild(document.createElement("img"));
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this._view.style.position = "absolute";
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this._view.onload = Util.bindApply(this, this.SetPreview);
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}
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this._drag = new dzDrag(handle, {limit:true, container:container, onDragMove: Util.bindApply(this, this.setPos)});
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this.resize = !!this.options.resize;
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if(this.resize){
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var op = this.options;
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var _resize = new ImgCropperResize(container, {max: false, scale:true, min:true, minWidth:options.minWidth, minHeight:options.minHeight, onResize: Util.bindApply(this, this.scaleImg)});
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op.rightDown && (_resize.set(op.rightDown, "right-down"));
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op.leftDown && (_resize.set(op.leftDown, "left-down"));
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op.rightUp && (_resize.set(op.rightUp, "right-up"));
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op.leftUp && (_resize.set(op.leftUp, "left-up"));
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op.right && (_resize.set(op.right, "right"));
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op.left && (_resize.set(op.left, "left"));
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op.down && (_resize.set(op.down, "down"));
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op.up && (_resize.set(op.up, "up"));
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this.min = !!this.options.min;
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this.minWidth = Math.round(this.options.minWidth);
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this.minHeight = Math.round(this.options.minHeight);
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this._resize = _resize;
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}
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this._container.style.position = "relative";
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this._container.style.overflow = "hidden";
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this._layHandle.style.zIndex = 200;
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this._layCropper.style.zIndex = 100;
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this._layBase.style.position = this._layCropper.style.position = "absolute";
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this._layBase.style.top = this._layBase.style.left = this._layCropper.style.top = this._layCropper.style.left = 0;
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this.initialize();
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},
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initialize: function() {
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this.color && (this._container.style.backgroundColor = this.color);
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this._tempImg.src = this._layBase.src = this._layCropper.src = this.url;
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if(BROWSER.ie){
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this._layBase.style.filter = "alpha(opacity:" + this.opacity + ")";
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this._layHandle.style.filter = "alpha(opacity:0)";
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this._layHandle.style.backgroundColor = "#FFF";
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} else {
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this._layBase.style.opacity = this.opacity / 100;
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}
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this._view && (this._view.src = this.url);
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if(this.resize){
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with(this._resize){
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Scale = this.scale; Ratio = this.ratio; Min = this.min; minWidth = this.minWidth; minHeight = this.minHeight;
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}
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}
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},
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setPos: function() {
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if(BROWSER.ie == 6.0){ with(this._layHandle.style){ zoom = .9; zoom = 1; }; };
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var p = this.getPos();
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this._layCropper.style.clip = "rect(" + p.Top + "px " + (p.Left + p.Width) + "px " + (p.Top + p.Height) + "px " + p.Left + "px)";
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this.SetPreview();
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parent.resetHeight(this._container, this.getPos(), this._layBase);
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},
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scaleImg:function() {
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this.height = this._resize._styleHeight;
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this.width = this._resize._styleWidth;
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this.initialize();
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this.setSize();
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this.setPos();
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var maxRight = (parseInt(this._layHandle.style.left) || 0) + (parseInt(this._layHandle.offsetWidth) || 0);
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var maxBottom = (parseInt(this._layHandle.style.top) || 0) + (parseInt(this._layHandle.offsetHeight) || 0);
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if(this._container != null) {
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if(maxRight > this._container.clientWidth) {
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var nowLeft = this._container.clientWidth - this._layHandle.offsetWidth;
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this._layHandle.style.left = (nowLeft < 0 ? 0 : nowLeft) + "px";
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}
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if(maxBottom > this._container.clientHeight) {
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var nowTop = this._container.clientHeight - this._layHandle.offsetHeight;
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this._layHandle.style.top = (nowTop < 0 ? 0 : nowTop) + "px";
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}
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}
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parent.resetHeight(this._container, this.getPos(), this._layBase);
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},
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SetPreview: function() {
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if(this._view){
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var p = this.getPos(), s = this.getSize(p.Width, p.Height, this.viewWidth, this.viewHeight), scale = s.Height / p.Height;
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var pHeight = this._layBase.height * scale, pWidth = this._layBase.width * scale, pTop = p.Top * scale, pLeft = p.Left * scale;
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with(this._view.style){
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width = pWidth + "px"; height = pHeight + "px"; top = - pTop + "px "; left = - pLeft + "px";
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clip = "rect(" + pTop + "px " + (pLeft + s.Width) + "px " + (pTop + s.Height) + "px " + pLeft + "px)";
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}
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}
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},
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setSize: function() {
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if(this.width > this._tempImg.width) {
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this.width = this._tempImg.width;
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}
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if(this.height > this._tempImg.height) {
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this.height = this._tempImg.height;
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}
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var s = this.getSize(this._tempImg.width, this._tempImg.height, this.width, this.height);
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if(this.options.min && (s.Width <= this.options.minWidth || s.Height <= this.options.minHeight)) {
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return false;
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}
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this._layBase.style.width = this._layCropper.style.width = s.Width + "px";
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this._layBase.style.height = this._layCropper.style.height = s.Height + "px";
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this._drag.maxRight = s.Width; this._drag.maxBottom = s.Height;
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if(this.resize) {
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this._container.style.width = this._layBase.style.width; this._container.style.height = this._layBase.style.height;
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if(this.setLayHandle) {
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this._layHandle.style.left = ((s.Width - this._layHandle.offsetWidth)/2)+"px";
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this._layHandle.style.top = ((s.Height - this._layHandle.offsetHeight)/2)+"px";
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this.setPos();
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this.setLayHandle = false;
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}
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}
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},
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getPos: function() {
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with(this._layHandle){
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return { Top: offsetTop, Left: offsetLeft, Width: offsetWidth, Height: offsetHeight };
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}
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},
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getSize: function(nowWidth, nowHeight, fixWidth, fixHeight) {
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var iWidth = nowWidth, iHeight = nowHeight, scale = iWidth / iHeight;
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if(fixHeight){ iWidth = (iHeight = fixHeight) * scale; }
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if(fixWidth && (!fixHeight || iWidth > fixWidth)){ iHeight = (iWidth = fixWidth) / scale; }
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return { Width: iWidth, Height: iHeight }
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}
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};
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ImgCropperResize = function() {
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this.options = {
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max: false,
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container: "",
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maxLeft: 0,
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maxRight: 9999,
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maxTop: 0,
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maxBottom: 9999,
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min: false,
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minWidth: 50,
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minHeight: 50,
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scale: false,
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ratio: 0,
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onResize: function(){}
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};
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this.initialize.apply(this, arguments);
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};
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ImgCropperResize.prototype = {
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initialize: function(resizeObjId, options) {
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this.options = Util.setOptions(this.options, options || {});
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this._resizeObj = $(resizeObjId);
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this._styleWidth = this._styleHeight = this._styleLeft = this._styleTop = 0;
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this._sideRight = this._sideDown = this._sideLeft = this._sideUp = 0;
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this._fixLeft = this._fixTop = 0;
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this._scaleLeft = this._scaleTop = 0;
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this._maxSet = function(){};
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this._maxRightWidth = this._maxDownHeight = this._maxUpHeight = this._maxLeftWidth = 0;
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this._maxScaleWidth = this._maxScaleHeight = 0;
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this._fun = function(){};
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var _style = Util.currentStyle(this._resizeObj);
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this._borderX = (parseInt(_style.borderLeftWidth) || 0) + (parseInt(_style.borderRightWidth) || 0);
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this._borderY = (parseInt(_style.borderTopWidth) || 0) + (parseInt(_style.borderBottomWidth) || 0);
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this._resizeTranscript = Util.bindApply(this, this.resize);
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this._stopTranscript = Util.bindApply(this, this.stop);
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this.max = !!this.options.max;
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this._container = $(this.options.container) || null;
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this.maxLeft = Math.round(this.options.maxLeft);
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this.maxRight = Math.round(this.options.maxRight);
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this.maxTop = Math.round(this.options.maxTop);
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this.maxBottom = Math.round(this.options.maxBottom);
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this.min = !!this.options.min;
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this.minWidth = Math.round(this.options.minWidth);
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this.minHeight = Math.round(this.options.minHeight);
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this.scale = !!this.options.scale;
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this.ratio = Math.max(this.options.ratio, 0);
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this.onResize = this.options.onResize;
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this._resizeObj.style.position = "absolute";
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!this._container || Util.currentStyle(this._container).position == "relative" || (this._container.style.position = "relative");
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},
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set: function(resize, side) {
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var resize = $(resize), fun;
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if(!resize) return;
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switch(side.toLowerCase()) {
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case "up":
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fun = this.up;
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break;
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case "down":
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fun = this.down;
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break;
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case "left":
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fun = this.left;
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break;
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case "right":
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fun = this.right;
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break;
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case "left-up":
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fun = this.leftUp;
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break;
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case "right-up":
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fun = this.rightUp;
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break;
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case "left-down":
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fun = this.leftDown;
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break;
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case "right-down" :
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default:
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fun = this.rightDown;
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break;
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};
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Util.addEventHandler(resize, "mousedown", Util.bindApply(this, this.start, fun));
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},
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start: function(oEvent, fun, touch) {
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oEvent.stopPropagation ? oEvent.stopPropagation() : (oEvent.cancelBubble = true);
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this._fun = fun;
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this._styleWidth = this._resizeObj.clientWidth;
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this._styleHeight = this._resizeObj.clientHeight;
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this._styleLeft = this._resizeObj.offsetLeft;
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this._styleTop = this._resizeObj.offsetTop;
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this._sideLeft = oEvent.clientX - this._styleWidth;
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this._sideRight = oEvent.clientX + this._styleWidth;
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this._sideUp = oEvent.clientY - this._styleHeight;
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this._sideDown = oEvent.clientY + this._styleHeight;
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this._fixLeft = this._styleLeft + this._styleWidth;
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this._fixTop = this._styleTop + this._styleHeight;
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if(this.scale) {
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this.ratio = Math.max(this.ratio, 0) || this._styleWidth / this._styleHeight;
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this._scaleLeft = this._styleLeft + this._styleWidth / 2;
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this._scaleTop = this._styleTop + this._styleHeight / 2;
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};
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if(this.max) {
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var maxLeft = this.maxLeft, maxRight = this.maxRight, maxTop = this.maxTop, maxBottom = this.maxBottom;
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if(!!this._container){
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maxLeft = Math.max(maxLeft, 0);
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maxTop = Math.max(maxTop, 0);
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maxRight = Math.min(maxRight, this._container.clientWidth);
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maxBottom = Math.min(maxBottom, this._container.clientHeight);
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};
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maxRight = Math.max(maxRight, maxLeft + (this.min ? this.minWidth : 0) + this._borderX);
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maxBottom = Math.max(maxBottom, maxTop + (this.min ? this.minHeight : 0) + this._borderY);
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this._mxSet = function() {
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this._maxRightWidth = maxRight - this._styleLeft - this._borderX;
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this._maxDownHeight = maxBottom - this._styleTop - this._borderY;
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this._maxUpHeight = Math.max(this._fixTop - maxTop, this.min ? this.minHeight : 0);
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this._maxLeftWidth = Math.max(this._fixLeft - maxLeft, this.min ? this.minWidth : 0);
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};
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this._mxSet();
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if(this.scale) {
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this._maxScaleWidth = Math.min(this._scaleLeft - maxLeft, maxRight - this._scaleLeft - this._borderX) * 2;
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this._maxScaleHeight = Math.min(this._scaleTop - maxTop, maxBottom - this._scaleTop - this._borderY) * 2;
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}
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}
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Util.addEventHandler(document, "mousemove", this._resizeTranscript);
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Util.addEventHandler(document, "mouseup", this._stopTranscript);
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if(BROWSER.ie){
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Util.addEventHandler(this._resizeObj, "losecapture", this._stopTranscript);
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this._resizeObj.setCapture();
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}else{
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Util.addEventHandler(window, "blur", this._stopTranscript);
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oEvent.preventDefault();
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};
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},
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resize: function(e) {
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window.getSelection ? window.getSelection().removeAllRanges() : document.selection.empty();
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this._fun(e);
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if(this.options.min && (this._styleWidth <= this.options.minWidth || this._styleHeight <= this.options.minHeight)) {
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return false;
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}
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with(this._resizeObj.style) {
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width = this._styleWidth + "px"; height = this._styleHeight + "px";
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top = this._styleTop + "px"; left = this._styleLeft + "px";
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}
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this.onResize();
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},
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up: function(e) {
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this.repairY(this._sideDown - e.clientY, this._maxUpHeight);
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this.repairTop();
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this.turnDown(this.down);
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},
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down: function(e) {
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this.repairY(e.clientY - this._sideUp, this._maxDownHeight);
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this.turnUp(this.up);
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},
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right: function(e) {
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this.repairX(e.clientX - this._sideLeft, this._maxRightWidth);
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this.turnLeft(this.left);
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},
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left: function(e) {
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this.repairX(this._sideRight - e.clientX, this._maxLeftWidth);
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this.repairLeft();
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this.turnRight(this.right);
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},
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rightDown: function(e) {
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this.repairAngle(
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e.clientX - this._sideLeft, this._maxRightWidth,
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e.clientY - this._sideUp, this._maxDownHeight
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);
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this.turnLeft(this.leftDown) || this.scale || this.turnUp(this.rightUp);
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},
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rightUp: function(e) {
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this.repairAngle(
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e.clientX - this._sideLeft, this._maxRightWidth,
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this._sideDown - e.clientY, this._maxUpHeight
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);
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this.repairTop();
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this.turnLeft(this.leftUp) || this.scale || this.turnDown(this.rightDown);
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},
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leftDown: function(e) {
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this.repairAngle(
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this._sideRight - e.clientX, this._maxLeftWidth,
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e.clientY - this._sideUp, this._maxDownHeight
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);
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this.repairLeft();
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this.turnRight(this.rightDown) || this.scale || this.turnUp(this.leftUp);
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},
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leftUp: function(e) {
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this.repairAngle(
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this._sideRight - e.clientX, this._maxLeftWidth,
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this._sideDown - e.clientY, this._maxUpHeight
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);
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this.repairTop();
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this.repairLeft();
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this.turnRight(this.rightUp) || this.scale || this.turnDown(this.leftDown);
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},
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repairX: function(iWidth, maxWidth) {
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iWidth = this.repairWidth(iWidth, maxWidth);
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if(this.scale){
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var iHeight = this.repairScaleHeight(iWidth);
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if(this.max && iHeight > this._maxScaleHeight){
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iHeight = this._maxScaleHeight;
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iWidth = this.repairScaleWidth(iHeight);
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}else if(this.min && iHeight < this.minHeight){
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var tWidth = this.repairScaleWidth(this.minHeight);
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if(tWidth < maxWidth){ iHeight = this.minHeight; iWidth = tWidth; }
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}
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this._styleHeight = iHeight;
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this._styleTop = this._scaleTop - iHeight / 2;
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}
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this._styleWidth = iWidth;
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},
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repairY: function(iHeight, maxHeight) {
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iHeight = this.repairHeight(iHeight, maxHeight);
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if(this.scale){
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var iWidth = this.repairScaleWidth(iHeight);
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if(this.max && iWidth > this._maxScaleWidth){
|
||||
iWidth = this._maxScaleWidth;
|
||||
iHeight = this.repairScaleHeight(iWidth);
|
||||
}else if(this.min && iWidth < this.minWidth){
|
||||
var tHeight = this.repairScaleHeight(this.minWidth);
|
||||
if(tHeight < maxHeight){ iWidth = this.minWidth; iHeight = tHeight; }
|
||||
}
|
||||
this._styleWidth = iWidth;
|
||||
this._styleLeft = this._scaleLeft - iWidth / 2;
|
||||
}
|
||||
this._styleHeight = iHeight;
|
||||
},
|
||||
repairAngle: function(iWidth, maxWidth, iHeight, maxHeight) {
|
||||
iWidth = this.repairWidth(iWidth, maxWidth);
|
||||
if(this.scale) {
|
||||
iHeight = this.repairScaleHeight(iWidth);
|
||||
if(this.max && iHeight > maxHeight){
|
||||
iHeight = maxHeight;
|
||||
iWidth = this.repairScaleWidth(iHeight);
|
||||
}else if(this.min && iHeight < this.minHeight){
|
||||
var tWidth = this.repairScaleWidth(this.minHeight);
|
||||
if(tWidth < maxWidth){ iHeight = this.minHeight; iWidth = tWidth; }
|
||||
}
|
||||
} else {
|
||||
iHeight = this.repairHeight(iHeight, maxHeight);
|
||||
}
|
||||
this._styleWidth = iWidth;
|
||||
this._styleHeight = iHeight;
|
||||
},
|
||||
repairTop: function() {
|
||||
this._styleTop = this._fixTop - this._styleHeight;
|
||||
},
|
||||
repairLeft: function() {
|
||||
this._styleLeft = this._fixLeft - this._styleWidth;
|
||||
},
|
||||
repairHeight: function(iHeight, maxHeight) {
|
||||
iHeight = Math.min(this.max ? maxHeight : iHeight, iHeight);
|
||||
iHeight = Math.max(this.min ? this.minHeight : iHeight, iHeight, 0);
|
||||
return iHeight;
|
||||
},
|
||||
repairWidth: function(iWidth, maxWidth) {
|
||||
iWidth = Math.min(this.max ? maxWidth : iWidth, iWidth);
|
||||
iWidth = Math.max(this.min ? this.minWidth : iWidth, iWidth, 0);
|
||||
return iWidth;
|
||||
},
|
||||
repairScaleHeight: function(iWidth) {
|
||||
return Math.max(Math.round((iWidth + this._borderX) / this.ratio - this._borderY), 0);
|
||||
},
|
||||
repairScaleWidth: function(iHeight) {
|
||||
return Math.max(Math.round((iHeight + this._borderY) * this.ratio - this._borderX), 0);
|
||||
},
|
||||
turnRight: function(fun) {
|
||||
if(!(this.min || this._styleWidth)){
|
||||
this._fun = fun;
|
||||
this._sideLeft = this._sideRight;
|
||||
this.max && this._mxSet();
|
||||
return true;
|
||||
}
|
||||
},
|
||||
turnLeft: function(fun) {
|
||||
if(!(this.min || this._styleWidth)){
|
||||
this._fun = fun;
|
||||
this._sideRight = this._sideLeft;
|
||||
this._fixLeft = this._styleLeft;
|
||||
this.max && this._mxSet();
|
||||
return true;
|
||||
}
|
||||
},
|
||||
turnUp: function(fun) {
|
||||
if(!(this.min || this._styleHeight)){
|
||||
this._fun = fun;
|
||||
this._sideDown = this._sideUp;
|
||||
this._fixTop = this._styleTop;
|
||||
this.max && this._mxSet();
|
||||
return true;
|
||||
}
|
||||
},
|
||||
turnDown: function(fun) {
|
||||
if(!(this.min || this._styleHeight)){
|
||||
this._fun = fun;
|
||||
this._sideUp = this._sideDown;
|
||||
this.max && this._mxSet();
|
||||
return true;
|
||||
}
|
||||
},
|
||||
stop: function() {
|
||||
Util.removeEventHandler(document, "mousemove", this._resizeTranscript);
|
||||
Util.removeEventHandler(document, "mouseup", this._stopTranscript);
|
||||
if(BROWSER.ie){
|
||||
Util.removeEventHandler(this._resizeObj, "losecapture", this._stopTranscript);
|
||||
this._resizeObj.releaseCapture();
|
||||
}else{
|
||||
Util.removeEventHandler(window, "blur", this._stopTranscript);
|
||||
}
|
||||
}
|
||||
};
|
||||
dzDrag = function() {
|
||||
this.options = {
|
||||
handle: '',
|
||||
limit: false,
|
||||
maxLeft: 0,
|
||||
maxRight: 9999,
|
||||
maxTop: 0,
|
||||
maxBottom: 9999,
|
||||
container: '',
|
||||
lockX: false,
|
||||
lockY: false,
|
||||
onDragStart: function(){},
|
||||
onDragMove: function(){},
|
||||
onDragEnd: function(){}
|
||||
};
|
||||
this.initialize.apply(this, arguments);
|
||||
};
|
||||
dzDrag.prototype = {
|
||||
initialize: function(dragId, options) {
|
||||
this.options = Util.setOptions(this.options, options || {});
|
||||
this._dragObj = $(dragId);
|
||||
this._x = this._y = 0;
|
||||
this._marginLeft = this._marginTop = 0;
|
||||
this._handle = $(this.options.handle) || this._dragObj;
|
||||
this._container = $(this.options.container) || null;
|
||||
this._dragObj.style.position = "absolute";
|
||||
this._dragEndTranscript = Util.bindApply(this, this.dragEnd);
|
||||
this._dragMoveTranscript = Util.bindApply(this, this.dragMove);
|
||||
Util.addEventHandler(this._handle, "mousedown", Util.bindApply(this, this.dragStart));
|
||||
},
|
||||
dragStart: function(event) {
|
||||
|
||||
this.setLimit();
|
||||
this._x = event.clientX - this._dragObj.offsetLeft;
|
||||
this._y = event.clientY - this._dragObj.offsetTop;
|
||||
|
||||
var curStyle = Util.currentStyle(this._dragObj);
|
||||
this._marginLeft = parseInt(curStyle.marginLeft) || 0;
|
||||
this._marginTop = parseInt(curStyle.marginTop) || 0;
|
||||
Util.addEventHandler(document, "mousemove", this._dragMoveTranscript);
|
||||
Util.addEventHandler(document, "mouseup", this._dragEndTranscript);
|
||||
if(BROWSER.ie){
|
||||
Util.addEventHandler(this._handle, "losecapture", this._dragEndTranscript);
|
||||
this._handle.setCapture();
|
||||
}else{
|
||||
Util.addEventHandler(window, "blur", this._dragEndTranscript);
|
||||
event.preventDefault();
|
||||
};
|
||||
this.options.onDragStart();
|
||||
},
|
||||
dragMove: function(event) {
|
||||
window.getSelection ? window.getSelection().removeAllRanges() : document.selection.empty();
|
||||
var iLeft = event.clientX - this._x;
|
||||
var iTop = event.clientY - this._y;
|
||||
if(this.options.limit) {
|
||||
var maxLeft = this.options.maxLeft, maxRight = this.options.maxRight, maxTop = this.options.maxTop, maxBottom = this.options.maxBottom;
|
||||
if(this._container != null){
|
||||
maxLeft = Math.max(maxLeft, 0);
|
||||
maxTop = Math.max(maxTop, 0);
|
||||
maxRight = Math.min(maxRight, this._container.clientWidth);
|
||||
maxBottom = Math.min(maxBottom, this._container.clientHeight);
|
||||
};
|
||||
iLeft = Math.max(Math.min(iLeft, maxRight - this._dragObj.offsetWidth), maxLeft);
|
||||
iTop = Math.max(Math.min(iTop, maxBottom - this._dragObj.offsetHeight), maxTop);
|
||||
}
|
||||
if(!this.options.lockX) { this._dragObj.style.left = iLeft - this._marginLeft + "px"; }
|
||||
if(!this.options.lockY) { this._dragObj.style.top = iTop - this._marginTop + "px"; }
|
||||
this.options.onDragMove();
|
||||
},
|
||||
dragEnd: function(event) {
|
||||
Util.removeEventHandler(document, "mousemove", this._dragMoveTranscript);
|
||||
Util.removeEventHandler(document, "mouseup", this._dragEndTranscript);
|
||||
if(BROWSER.ie) {
|
||||
Util.removeEventHandler(this._handle, "losecapture", this._dragEndTranscript);
|
||||
this._handle.releaseCapture();
|
||||
} else {
|
||||
Util.removeEventHandler(window, "blur", this._dragEndTranscript);
|
||||
}
|
||||
this.options.onDragEnd();
|
||||
},
|
||||
setLimit: function() {
|
||||
if(this.options.limit) {
|
||||
this.options.maxRight = Math.max(this.options.maxRight, this.options.maxLeft + this._dragObj.offsetWidth);
|
||||
this.options.maxBottom = Math.max(this.options.maxBottom, this.options.maxTop + this._dragObj.offsetHeight);
|
||||
!this._container || Util.currentStyle(this._container).position == "relative" || Util.currentStyle(this._container).position == "absolute" || (this._container.style.position = "relative");
|
||||
}
|
||||
}
|
||||
};
|
||||
var Util = {
|
||||
setOptions: function(object, source) {
|
||||
for(var property in source) {
|
||||
object[property] = source[property];
|
||||
}
|
||||
return object;
|
||||
},
|
||||
addEventHandler: function(targetObj, eventType, funHandler) {
|
||||
if(targetObj.addEventListener) {
|
||||
targetObj.addEventListener(eventType, funHandler, false);
|
||||
} else if (targetObj.attachEvent) {
|
||||
targetObj.attachEvent("on" + eventType, funHandler);
|
||||
} else {
|
||||
targetObj["on" + eventType] = funHandler;
|
||||
}
|
||||
},
|
||||
removeEventHandler: function(targetObj, eventType, funHandler) {
|
||||
if(targetObj.removeEventListener) {
|
||||
targetObj.removeEventListener(eventType, funHandler, false);
|
||||
} else if (targetObj.detachEvent) {
|
||||
targetObj.detachEvent("on" + eventType, funHandler);
|
||||
} else {
|
||||
targetObj["on" + eventType] = null;
|
||||
}
|
||||
},
|
||||
bindApply: function(object, fun) {
|
||||
var args = Array.prototype.slice.call(arguments).slice(2);
|
||||
return function(event) {
|
||||
return fun.apply(object, [event || window.event].concat(args));
|
||||
};
|
||||
},
|
||||
currentStyle: function(element){
|
||||
return element.currentStyle || document.defaultView.getComputedStyle(element, null);
|
||||
}
|
||||
};
|
||||
})();
|
||||
Reference in New Issue
Block a user