idrag.js
上传用户:shjgzm
上传日期:2017-08-31
资源大小:2757k
文件大小:16k
- /**
- * Interface Elements for jQuery
- * Draggable
- *
- * http://interface.eyecon.ro
- *
- * Copyright (c) 2006 Stefan Petre
- * Dual licensed under the MIT (MIT-LICENSE.txt)
- * and GPL (GPL-LICENSE.txt) licenses.
- *
- *
- */
- jQuery.iDrag = {
- helper : null,
- dragged: null,
- destroy : function()
- {
- return this.each(
- function ()
- {
- if (this.isDraggable) {
- this.dragElem = null;
- jQuery(this).unbind('mousedown', jQuery.iDrag.dragstart);
- }
- }
- );
- },
- draginit : function (e)
- {
- if (jQuery.iDrag.dragged != null) {
- jQuery.iDrag.dragstop(e);
- return false;
- }
- var elm = this.dragElem;
- jQuery(document)
- .bind('mousemove', jQuery.iDrag.dragmove)
- .bind('mouseup', jQuery.iDrag.dragstop);
- elm.dragCfg.pointer = jQuery.iUtil.getPointer(e);
- elm.dragCfg.currentPointer = elm.dragCfg.pointer;
- elm.dragCfg.init = false;
- elm.dragCfg.fromHandler = this != this.dragElem;
- jQuery.iDrag.dragged = elm;
- if (elm.dragCfg.si && this != this.dragElem) {
- parentPos = jQuery.iUtil.getPosition(elm.parentNode);
- sliderSize = jQuery.iUtil.getSize(elm);
- sliderPos = {
- x : parseInt(jQuery.css(elm,'left')) || 0,
- y : parseInt(jQuery.css(elm,'top')) || 0
- };
- dx = elm.dragCfg.currentPointer.x - parentPos.x - sliderSize.wb/2 - sliderPos.x;
- dy = elm.dragCfg.currentPointer.y - parentPos.y - sliderSize.hb/2 - sliderPos.y;
- jQuery.iSlider.dragmoveBy(elm, [dx, dy]);
- }
- return false;
- },
-
- dragstart : function(e)
- {
- elm = jQuery.iDrag.dragged;
- elm.dragCfg.init = true;
-
- dEs = elm.style;
-
- elm.dragCfg.oD = jQuery.css(elm,'display');
- elm.dragCfg.oP = jQuery.css(elm,'position');
- if (!elm.dragCfg.initialPosition)
- elm.dragCfg.initialPosition = elm.dragCfg.oP;
- elm.dragCfg.oR = {
- x : parseInt(jQuery.css(elm,'left')) || 0,
- y : parseInt(jQuery.css(elm,'top')) || 0
- };
- elm.dragCfg.diffX = 0;
- elm.dragCfg.diffY = 0;
- if (jQuery.browser.msie) {
- oldBorder = jQuery.iUtil.getBorder(elm, true);
- elm.dragCfg.diffX = oldBorder.l||0;
- elm.dragCfg.diffY = oldBorder.t||0;
- }
-
- elm.dragCfg.oC = jQuery.extend(
- jQuery.iUtil.getPosition(elm),
- jQuery.iUtil.getSize(elm)
- );
- if (elm.dragCfg.oP != 'relative' && elm.dragCfg.oP != 'absolute') {
- dEs.position = 'relative';
- }
-
- jQuery.iDrag.helper.empty();
-
- clonedEl = elm.cloneNode(true);
-
- jQuery(clonedEl).css(
- {
- display: 'block',
- left: '0px',
- top: '0px'
- }
- );
- clonedEl.style.marginTop = '0';
- clonedEl.style.marginRight = '0';
- clonedEl.style.marginBottom = '0';
- clonedEl.style.marginLeft = '0';
- jQuery.iDrag.helper.append(clonedEl);
-
- if (elm.dragCfg.onStart)
- elm.dragCfg.onStart.apply(elm, [clonedEl]);
-
- dhs = jQuery.iDrag.helper.get(0).style;
- if (elm.dragCfg.autoSize) {
- dhs.width = 'auto';
- dhs.height = 'auto';
- } else {
- dhs.height = elm.dragCfg.oC.hb + 'px';
- dhs.width = elm.dragCfg.oC.wb + 'px';
- }
-
- dhs.display = 'block';
- dhs.marginTop = '0px';
- dhs.marginRight = '0px';
- dhs.marginBottom = '0px';
- dhs.marginLeft = '0px';
-
- //remeasure the clone to check if the size was changed by user's functions
- jQuery.extend(
- elm.dragCfg.oC,
- jQuery.iUtil.getSize(clonedEl)
- );
-
- if (elm.dragCfg.cursorAt) {
- if (elm.dragCfg.cursorAt.left) {
- elm.dragCfg.oR.x += elm.dragCfg.pointer.x - elm.dragCfg.oC.x - elm.dragCfg.cursorAt.left;
- elm.dragCfg.oC.x = elm.dragCfg.pointer.x - elm.dragCfg.cursorAt.left;
- }
- if (elm.dragCfg.cursorAt.top) {
- elm.dragCfg.oR.y += elm.dragCfg.pointer.y - elm.dragCfg.oC.y - elm.dragCfg.cursorAt.top;
- elm.dragCfg.oC.y = elm.dragCfg.pointer.y - elm.dragCfg.cursorAt.top;
- }
- if (elm.dragCfg.cursorAt.right) {
- elm.dragCfg.oR.x += elm.dragCfg.pointer.x - elm.dragCfg.oC.x -elm.dragCfg.oC.hb + elm.dragCfg.cursorAt.right;
- elm.dragCfg.oC.x = elm.dragCfg.pointer.x - elm.dragCfg.oC.wb + elm.dragCfg.cursorAt.right;
- }
- if (elm.dragCfg.cursorAt.bottom) {
- elm.dragCfg.oR.y += elm.dragCfg.pointer.y - elm.dragCfg.oC.y - elm.dragCfg.oC.hb + elm.dragCfg.cursorAt.bottom;
- elm.dragCfg.oC.y = elm.dragCfg.pointer.y - elm.dragCfg.oC.hb + elm.dragCfg.cursorAt.bottom;
- }
- }
- elm.dragCfg.nx = elm.dragCfg.oR.x;
- elm.dragCfg.ny = elm.dragCfg.oR.y;
-
- if (elm.dragCfg.insideParent || elm.dragCfg.containment == 'parent') {
- parentBorders = jQuery.iUtil.getBorder(elm.parentNode, true);
- elm.dragCfg.oC.x = elm.offsetLeft + (jQuery.browser.msie ? 0 : jQuery.browser.opera ? -parentBorders.l : parentBorders.l);
- elm.dragCfg.oC.y = elm.offsetTop + (jQuery.browser.msie ? 0 : jQuery.browser.opera ? -parentBorders.t : parentBorders.t);
- jQuery(elm.parentNode).append(jQuery.iDrag.helper.get(0));
- }
- if (elm.dragCfg.containment) {
- jQuery.iDrag.getContainment(elm);
- elm.dragCfg.onDrag.containment = jQuery.iDrag.fitToContainer;
- }
-
- if (elm.dragCfg.si) {
- jQuery.iSlider.modifyContainer(elm);
- }
-
- dhs.left = elm.dragCfg.oC.x - elm.dragCfg.diffX + 'px';
- dhs.top = elm.dragCfg.oC.y - elm.dragCfg.diffY + 'px';
- //resize the helper to fit the clone
- dhs.width = elm.dragCfg.oC.wb + 'px';
- dhs.height = elm.dragCfg.oC.hb + 'px';
-
- jQuery.iDrag.dragged.dragCfg.prot = false;
-
- if (elm.dragCfg.gx) {
- elm.dragCfg.onDrag.grid = jQuery.iDrag.snapToGrid;
- }
- if (elm.dragCfg.zIndex != false) {
- jQuery.iDrag.helper.css('zIndex', elm.dragCfg.zIndex);
- }
- if (elm.dragCfg.opacity) {
- jQuery.iDrag.helper.css('opacity', elm.dragCfg.opacity);
- if (window.ActiveXObject) {
- jQuery.iDrag.helper.css('filter', 'alpha(opacity=' + elm.dragCfg.opacity * 100 + ')');
- }
- }
- if (elm.dragCfg.ghosting == false) {
- dEs.display = 'none';
- }
- if (jQuery.iDrop && jQuery.iDrop.count > 0 ){
- jQuery.iDrop.highlight(elm);
- }
- return false;
- },
-
- getContainment : function(elm)
- {
- if (elm.dragCfg.containment.constructor == String) {
- if (elm.dragCfg.containment == 'parent') {
- elm.dragCfg.cont = jQuery.extend(
- {x:0,y:0},
- jQuery.iUtil.getSize(elm.parentNode)
- );
- contBorders = jQuery.iUtil.getBorder(elm.parentNode, true);
- elm.dragCfg.cont.w = elm.dragCfg.cont.wb - contBorders.l - contBorders.r;
- elm.dragCfg.cont.h = elm.dragCfg.cont.hb - contBorders.t - contBorders.b;
- } else if (elm.dragCfg.containment == 'document') {
- clnt = jQuery.iUtil.getClient();
- elm.dragCfg.cont = {
- x : 0,
- y : 0,
- w : clnt.w,
- h : clnt.h
- };
- }
- } else if (elm.dragCfg.containment.constructor == Array) {
- elm.dragCfg.cont = {
- x : parseInt(elm.dragCfg.containment[0])||0,
- y : parseInt(elm.dragCfg.containment[1])||0,
- w : parseInt(elm.dragCfg.containment[2])||0,
- h : parseInt(elm.dragCfg.containment[3])||0
- };
- }
- elm.dragCfg.cont.dx = elm.dragCfg.cont.x - elm.dragCfg.oC.x;
- elm.dragCfg.cont.dy = elm.dragCfg.cont.y - elm.dragCfg.oC.y;
- },
-
- hidehelper : function(dragged)
- {
- if (dragged.dragCfg.insideParent || dragged.dragCfg.containment == 'parent') {
- jQuery('body', document).append(jQuery.iDrag.helper.get(0));
- }
- jQuery.iDrag.helper.empty().hide().css('opacity', 1);
- if (window.ActiveXObject) {
- jQuery.iDrag.helper.css('filter', 'alpha(opacity=100)');
- }
- },
-
- dragstop : function(e)
- {
-
- jQuery(document)
- .unbind('mousemove', jQuery.iDrag.dragmove)
- .unbind('mouseup', jQuery.iDrag.dragstop);
-
- if (jQuery.iDrag.dragged == null) {
- return;
- }
- dragged = jQuery.iDrag.dragged;
-
- jQuery.iDrag.dragged = null;
- if (dragged.dragCfg.init == false) {
- return false;
- }
- if (dragged.dragCfg.so == true) {
- jQuery(dragged).css('position', dragged.dragCfg.oP);
- }
- dEs = dragged.style;
-
- if (dragged.si) {
- jQuery.iDrag.helper.css('cursor', 'move');
- }
-
- if (dragged.dragCfg.revert == false) {
- if (dragged.dragCfg.fx > 0) {
- if (!dragged.dragCfg.axis || dragged.dragCfg.axis == 'horizontally') {
- x = new jQuery.fx(dragged,dragged.dragCfg.fx, 'left');
- x.custom(dragged.dragCfg.oR.x,dragged.dragCfg.nRx);
- }
- if (!dragged.dragCfg.axis || dragged.dragCfg.axis == 'vertically') {
- y = new jQuery.fx(dragged,dragged.dragCfg.fx, 'top');
- y.custom(dragged.dragCfg.oR.y,dragged.dragCfg.nRy);
- }
- } else {
- if (!dragged.dragCfg.axis || dragged.dragCfg.axis == 'horizontally')
- dragged.style.left = dragged.dragCfg.nRx + 'px';
- if (!dragged.dragCfg.axis || dragged.dragCfg.axis == 'vertically')
- dragged.style.top = dragged.dragCfg.nRy + 'px';
- }
- jQuery.iDrag.hidehelper(dragged);
- if (dragged.dragCfg.ghosting == false) {
- jQuery(dragged).css('display', dragged.dragCfg.oD);
- }
- } else if (dragged.dragCfg.fx > 0) {
- dragged.dragCfg.prot = true;
- if(jQuery.iDrop && jQuery.iDrop.overzone && jQuery.iSort) {
- dh = jQuery.iUtil.getPosition(jQuery.iSort.helper.get(0));
- } else {
- dh = false;
- }
- jQuery.iDrag.helper.animate(
- {
- left : dh ? dh.x : dragged.dragCfg.oC.x,
- top : dh ? dh.y : dragged.dragCfg.oC.y
- },
- dragged.dragCfg.fx,
- function()
- {
- dragged.dragCfg.prot = false;
- if (dragged.dragCfg.ghosting == false) {
- dragged.style.display = dragged.dragCfg.oD;
- }
- jQuery.iDrag.hidehelper(dragged);
- }
- );
- } else {
- jQuery.iDrag.hidehelper(dragged);
- if (dragged.dragCfg.ghosting == false) {
- jQuery(dragged).css('display', dragged.dragCfg.oD);
- }
- }
- if (jQuery.iDrop && jQuery.iDrop.count > 0 ){
- jQuery.iDrop.checkdrop(dragged);
- }
- if (jQuery.iSort && jQuery.iDrop.overzone) {
- jQuery.iSort.check(dragged);
- }
- if (dragged.dragCfg.onChange && (dragged.dragCfg.nRx != dragged.dragCfg.oR.x || dragged.dragCfg.nRy != dragged.dragCfg.oR.y)){
- dragged.dragCfg.onChange.apply(dragged, dragged.dragCfg.lastSi||[0,0,dragged.dragCfg.nRx,dragged.dragCfg.nRy]);
- }
- if (dragged.dragCfg.onStop)
- dragged.dragCfg.onStop.apply(dragged);
- return false;
- },
-
- snapToGrid : function(x, y, dx, dy)
- {
- if (dx != 0)
- dx = parseInt((dx + (this.dragCfg.gx * dx/Math.abs(dx))/2)/this.dragCfg.gx) * this.dragCfg.gx;
- if (dy != 0)
- dy = parseInt((dy + (this.dragCfg.gy * dy/Math.abs(dy))/2)/this.dragCfg.gy) * this.dragCfg.gy;
- return {
- dx : dx,
- dy : dy,
- x: 0,
- y: 0
- };
- },
-
- fitToContainer : function(x, y, dx, dy)
- {
- dx = Math.min(
- Math.max(dx,this.dragCfg.cont.dx),
- this.dragCfg.cont.w + this.dragCfg.cont.dx - this.dragCfg.oC.wb
- );
- dy = Math.min(
- Math.max(dy,this.dragCfg.cont.dy),
- this.dragCfg.cont.h + this.dragCfg.cont.dy - this.dragCfg.oC.hb
- );
-
- return {
- dx : dx,
- dy : dy,
- x: 0,
- y: 0
- }
- },
-
- dragmove : function(e)
- {
- if (jQuery.iDrag.dragged == null || jQuery.iDrag.dragged.dragCfg.prot == true) {
- return;
- }
-
- var dragged = jQuery.iDrag.dragged;
-
- dragged.dragCfg.currentPointer = jQuery.iUtil.getPointer(e);
- if (dragged.dragCfg.init == false) {
- distance = Math.sqrt(Math.pow(dragged.dragCfg.pointer.x - dragged.dragCfg.currentPointer.x, 2) + Math.pow(dragged.dragCfg.pointer.y - dragged.dragCfg.currentPointer.y, 2));
- if (distance < dragged.dragCfg.snapDistance){
- return;
- } else {
- jQuery.iDrag.dragstart(e);
- }
- }
-
- dx = dragged.dragCfg.currentPointer.x - dragged.dragCfg.pointer.x;
- dy = dragged.dragCfg.currentPointer.y - dragged.dragCfg.pointer.y;
-
- for (i in dragged.dragCfg.onDrag) {
- newCoords = dragged.dragCfg.onDrag[i].apply(dragged, [dragged.dragCfg.oR.x + dx, dragged.dragCfg.oR.y + dy, dx, dy]);
- if (newCoords && newCoords.constructor == Object) {
- dx = i != 'user' ? newCoords.dx : (newCoords.x - dragged.dragCfg.oR.x);
- dy = i != 'user' ? newCoords.dy : (newCoords.y - dragged.dragCfg.oR.y);
- }
- }
-
- dragged.dragCfg.nx = dragged.dragCfg.oC.x + dx - dragged.dragCfg.diffX;
- dragged.dragCfg.ny = dragged.dragCfg.oC.y + dy - dragged.dragCfg.diffY;
-
- if (dragged.dragCfg.si && (dragged.dragCfg.onSlide || dragged.dragCfg.onChange)) {
- jQuery.iSlider.onSlide(dragged, dragged.dragCfg.nx, dragged.dragCfg.ny);
- }
-
- if (!dragged.dragCfg.axis || dragged.dragCfg.axis == 'horizontally') {
- dragged.dragCfg.nRx = dragged.dragCfg.oR.x + dx;
- jQuery.iDrag.helper.get(0).style.left = dragged.dragCfg.nx + 'px';
- }
- if (!dragged.dragCfg.axis || dragged.dragCfg.axis == 'vertically') {
- dragged.dragCfg.nRy = dragged.dragCfg.oR.y + dy;
- jQuery.iDrag.helper.get(0).style.top = dragged.dragCfg.ny + 'px';
- }
-
- if (jQuery.iDrop && jQuery.iDrop.count > 0 ){
- jQuery.iDrop.checkhover(dragged, clonedEl);
- }
- return false;
- },
-
- build : function(o)
- {
- /*if (jQuery.browser.msie) {
- jQuery(window)
- .bind(
- 'unload',
- function()
- {
- jQuery('body')
- .unbind('mousemove', jQuery.iDrag.dragmove)
- .unbind('mouseup', jQuery.iDrag.dragstop);
- jQuery.iDrag.helper = null;
- jQuery.iDrag.dragged = null;
- jQuery('*').each(
- function()
- {
- if (this.dragElem) {
- jQuery(this).unbind('mousedown', jQuery.iDrag.dragstart);
- this.dragElem = null;
- this.onselectstart = null;
- this.ondragstart = null;
- }
- }
- );
- }
- );
- }*/
- if (!jQuery.iDrag.helper) {
- jQuery('body',document).append('<div id="dragHelper"></div>');
- jQuery.iDrag.helper = jQuery('#dragHelper');
- el = jQuery.iDrag.helper.get(0);
- els = el.style;
- els.position = 'absolute';
- els.display = 'none';
- els.cursor = 'move';
- els.listStyle = 'none';
- els.overflow = 'hidden';
- if (window.ActiveXObject) {
- el.onselectstart = function(){return false;};
- el.ondragstart = function(){return false;};
- } else {
- els.mozUserSelect = 'none';
- els.userSelect = 'none';
- }
- }
- if (!o) {
- o = {};
- }
- return this.each(
- function()
- {
- if (this.isDraggable || !jQuery.iUtil)
- return;
- if (window.ActiveXObject) {
- this.onselectstart = function(){return false;};
- this.ondragstart = function(){return false;};
- }
- var dhe = o.handle ? jQuery(this).find(o.handle) : jQuery(this);
- this.dragCfg = {
- revert : o.revert ? true : false,
- ghosting : o.ghosting ? true : false,
- so : o.so ? o.so : false,
- si : o.si ? o.si : false,
- insideParent : o.insideParent ? o.insideParent : false,
- zIndex : o.zIndex ? parseInt(o.zIndex)||0 : false,
- opacity : o.opacity ? parseFloat(o.opacity) : false,
- fx : parseInt(o.fx)||null,
- hpc : o.hpc ? o.hpc : false,
- onDrag : {},
- pointer : {},
- onStart : o.onStart && o.onStart.constructor == Function ? o.onStart : false,
- onStop : o.onStop && o.onStop.constructor == Function ? o.onStop : false,
- onChange : o.onChange && o.onChange.constructor == Function ? o.onChange : false,
- axis : /vertically|horizontally/.test(o.axis) ? o.axis : false,
- snapDistance : o.snapDistance ? parseInt(o.snapDistance)||0 : 0,
- cursorAt: o.cursorAt ? o.cursorAt : false,
- autoSize : o.autoSize ? true : false
- };
- if (o.onDrag && o.onDrag.constructor == Function)
- this.dragCfg.onDrag.user = o.onDrag;
- if (o.containment && ((o.containment.constructor == String && (o.containment == 'parent' || o.containment == 'document')) || (o.containment.constructor == Array && o.containment.length == 4) )) {
- this.dragCfg.containment = o.containment;
- }
- if(o.fractions) {
- this.dragCfg.fractions = o.fractions;
- }
- if(o.grid){
- if(typeof o.grid == 'number'){
- this.dragCfg.gx = parseInt(o.grid)||1;
- this.dragCfg.gy = parseInt(o.grid)||1;
- } else if (o.grid.length == 2) {
- this.dragCfg.gx = parseInt(o.grid[0])||1;
- this.dragCfg.gy = parseInt(o.grid[1])||1;
- }
- }
- if (o.onSlide && o.onSlide.constructor == Function) {
- this.dragCfg.onSlide = o.onSlide;
- }
-
- this.isDraggable = true;
- dhe.get(0).dragElem = this;
- dhe.bind('mousedown', jQuery.iDrag.draginit);
- }
- )
- }
- };
- jQuery.fn.extend(
- {
- DraggableDestroy : jQuery.iDrag.destroy,
- Draggable : jQuery.iDrag.build
- }
- );