root / trunk / web / dojo / dojox / image / SlideShow.js @ 12
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1 | 9 | andrej.cim | /*
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2 | Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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3 | Available via Academic Free License >= 2.1 OR the modified BSD license.
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4 | see: http://dojotoolkit.org/license for details
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5 | */
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6 | |||
7 | |||
8 | if(!dojo._hasResource["dojox.image.SlideShow"]){ |
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9 | dojo._hasResource["dojox.image.SlideShow"]=true; |
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10 | dojo.provide("dojox.image.SlideShow");
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11 | dojo.require("dojo.string");
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12 | dojo.require("dojo.fx");
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13 | dojo.require("dijit._Widget");
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14 | dojo.require("dijit._Templated");
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15 | dojo.declare("dojox.image.SlideShow",[dijit._Widget,dijit._Templated],{imageHeight:375,imageWidth:500,title:"",titleTemplate:"${title} <span class=\"slideShowCounterText\">(${current} of ${total})</span>",noLink:false,loop:true,hasNav:true,images:[],pageSize:20,autoLoad:true,autoStart:false,fixedHeight:false,imageStore:null,linkAttr:"link",imageLargeAttr:"imageUrl",titleAttr:"title",slideshowInterval:3,templateString:dojo.cache("dojox.image","resources/SlideShow.html","<div dojoAttachPoint=\"outerNode\" class=\"slideShowWrapper\">\n\t<div style=\"position:relative;\" dojoAttachPoint=\"innerWrapper\">\n\t\t<div class=\"slideShowNav\" dojoAttachEvent=\"onclick: _handleClick\">\n\t\t\t<div class=\"dijitInline slideShowTitle\" dojoAttachPoint=\"titleNode\">${title}</div>\n\t\t</div>\n\t\t<div dojoAttachPoint=\"navNode\" class=\"slideShowCtrl\" dojoAttachEvent=\"onclick: _handleClick\">\n\t\t\t<span dojoAttachPoint=\"navPrev\" class=\"slideShowCtrlPrev\"></span>\n\t\t\t<span dojoAttachPoint=\"navPlay\" class=\"slideShowCtrlPlay\"></span>\n\t\t\t<span dojoAttachPoint=\"navNext\" class=\"slideShowCtrlNext\"></span>\n\t\t</div>\n\t\t<div dojoAttachPoint=\"largeNode\" class=\"slideShowImageWrapper\"></div>\t\t\n\t\t<div dojoAttachPoint=\"hiddenNode\" class=\"slideShowHidden\"></div>\n\t</div>\n</div>\n"),_imageCounter:0,_tmpImage:null,_request:null,postCreate:function(){ |
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16 | this.inherited(arguments); |
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17 | var _1=document.createElement("img"); |
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18 | _1.setAttribute("width",this.imageWidth); |
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19 | _1.setAttribute("height",this.imageHeight); |
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20 | if(this.hasNav){ |
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21 | dojo.connect(this.outerNode,"onmouseover",this,function(_2){ |
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22 | try{
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23 | this._showNav();
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24 | } |
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25 | catch(e){
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26 | } |
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27 | }); |
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28 | dojo.connect(this.outerNode,"onmouseout",this,function(_3){ |
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29 | try{
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30 | this._hideNav(_3);
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31 | } |
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32 | catch(e){
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33 | } |
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34 | }); |
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35 | } |
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36 | this.outerNode.style.width=this.imageWidth+"px"; |
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37 | _1.setAttribute("src",this._blankGif); |
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38 | var _4=this; |
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39 | this.largeNode.appendChild(_1);
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40 | this._tmpImage=this._currentImage=_1; |
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41 | this._fitSize(true); |
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42 | this._loadImage(0,dojo.hitch(this,"showImage",0)); |
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43 | this._calcNavDimensions();
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44 | },setDataStore:function(_5,_6,_7){ |
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45 | this.reset();
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46 | var _8=this; |
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47 | this._request={query:{},start:_6.start||0,count:_6.count||this.pageSize,onBegin:function(_9,_a){ |
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48 | _8.maxPhotos=_9; |
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49 | }}; |
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50 | if(_6.query){
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51 | dojo.mixin(this._request.query,_6.query);
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52 | } |
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53 | if(_7){
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54 | dojo.forEach(["imageLargeAttr","linkAttr","titleAttr"],function(_b){ |
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55 | if(_7[_b]){
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56 | this[_b]=_7[_b];
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57 | } |
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58 | },this);
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59 | } |
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60 | var _c=function(_d){ |
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61 | _8.maxPhotos=_d.length; |
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62 | _8._request.onComplete=null;
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63 | if(_8.autoStart){
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64 | _8.imageIndex=-1;
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65 | _8.toggleSlideShow(); |
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66 | }else{
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67 | _8.showImage(0);
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68 | } |
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69 | }; |
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70 | this.imageStore=_5;
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71 | this._request.onComplete=_c;
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72 | this._request.start=0; |
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73 | this.imageStore.fetch(this._request); |
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74 | },reset:function(){ |
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75 | dojo.query("> *",this.largeNode).orphan(); |
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76 | this.largeNode.appendChild(this._tmpImage); |
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77 | dojo.query("> *",this.hiddenNode).orphan(); |
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78 | dojo.forEach(this.images,function(_e){ |
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79 | if(_e&&_e.parentNode){
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80 | _e.parentNode.removeChild(_e); |
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81 | } |
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82 | }); |
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83 | this.images=[];
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84 | this.isInitialized=false; |
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85 | this._imageCounter=0; |
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86 | },isImageLoaded:function(_f){ |
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87 | return this.images&&this.images.length>_f&&this.images[_f]; |
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88 | },moveImageLoadingPointer:function(_10){ |
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89 | this._imageCounter=_10;
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90 | },destroy:function(){ |
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91 | if(this._slideId){ |
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92 | this._stop();
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93 | } |
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94 | this.inherited(arguments); |
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95 | },showNextImage:function(_11,_12){ |
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96 | if(_11&&this._timerCancelled){ |
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97 | return false; |
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98 | } |
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99 | if(this.imageIndex+1>=this.maxPhotos){ |
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100 | if(_11&&(this.loop||_12)){ |
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101 | this.imageIndex=-1; |
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102 | }else{
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103 | if(this._slideId){ |
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104 | this._stop();
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105 | } |
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106 | return false; |
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107 | } |
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108 | } |
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109 | this.showImage(this.imageIndex+1,dojo.hitch(this,function(){ |
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110 | if(_11){
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111 | this._startTimer();
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112 | } |
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113 | })); |
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114 | return true; |
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115 | },toggleSlideShow:function(){ |
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116 | if(this._slideId){ |
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117 | this._stop();
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118 | }else{
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119 | dojo.toggleClass(this.domNode,"slideShowPaused"); |
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120 | this._timerCancelled=false; |
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121 | var idx=this.imageIndex; |
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122 | if(idx<0||(this.images[idx]&&this.images[idx]._img.complete)){ |
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123 | var _13=this.showNextImage(true,true); |
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124 | if(!_13){
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125 | this._stop();
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126 | } |
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127 | }else{
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128 | var _14=dojo.subscribe(this.getShowTopicName(),dojo.hitch(this,function(_15){ |
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129 | setTimeout(dojo.hitch(this,function(){ |
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130 | if(_15.index==idx){
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131 | var _16=this.showNextImage(true,true); |
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132 | if(!_16){
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133 | this._stop();
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134 | } |
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135 | dojo.unsubscribe(_14); |
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136 | } |
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137 | }),this.slideshowInterval*1000); |
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138 | })); |
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139 | dojo.publish(this.getShowTopicName(),[{index:idx,title:"",url:""}]); |
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140 | } |
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141 | } |
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142 | },getShowTopicName:function(){ |
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143 | return (this.widgetId||this.id)+"/imageShow"; |
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144 | },getLoadTopicName:function(){ |
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145 | return (this.widgetId?this.widgetId:this.id)+"/imageLoad"; |
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146 | },showImage:function(_17,_18){ |
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147 | if(!_18&&this._slideId){ |
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148 | this.toggleSlideShow();
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149 | } |
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150 | var _19=this; |
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151 | var _1a=this.largeNode.getElementsByTagName("div"); |
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152 | this.imageIndex=_17;
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153 | var _1b=function(){ |
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154 | if(_19.images[_17]){
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155 | while(_19.largeNode.firstChild){
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156 | _19.largeNode.removeChild(_19.largeNode.firstChild); |
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157 | } |
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158 | dojo.style(_19.images[_17],"opacity",0); |
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159 | _19.largeNode.appendChild(_19.images[_17]); |
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160 | _19._currentImage=_19.images[_17]._img; |
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161 | _19._fitSize(); |
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162 | var _1c=function(a,b,c){ |
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163 | var img=_19.images[_17].firstChild;
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164 | if(img.tagName.toLowerCase()!="img"){ |
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165 | img=img.firstChild; |
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166 | } |
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167 | var _1d=img.getAttribute("title")||""; |
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168 | if(_19._navShowing){
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169 | _19._showNav(true);
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170 | } |
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171 | dojo.publish(_19.getShowTopicName(),[{index:_17,title:_1d,url:img.getAttribute("src")}]); |
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172 | if(_18){
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173 | _18(a,b,c); |
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174 | } |
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175 | _19._setTitle(_1d); |
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176 | }; |
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177 | dojo.fadeIn({node:_19.images[_17],duration:300,onEnd:_1c}).play(); |
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178 | }else{
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179 | _19._loadImage(_17,function(){
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180 | _19.showImage(_17,_18); |
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181 | }); |
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182 | } |
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183 | }; |
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184 | if(_1a&&_1a.length>0){ |
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185 | dojo.fadeOut({node:_1a[0],duration:300,onEnd:function(){ |
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186 | _19.hiddenNode.appendChild(_1a[0]);
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187 | _1b(); |
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188 | }}).play(); |
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189 | }else{
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190 | _1b(); |
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191 | } |
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192 | },_fitSize:function(_1e){ |
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193 | if(!this.fixedHeight||_1e){ |
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194 | var _1f=(this._currentImage.height+(this.hasNav?20:0)); |
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195 | dojo.style(this.innerWrapper,"height",_1f+"px"); |
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196 | return;
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197 | } |
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198 | dojo.style(this.largeNode,"paddingTop",this._getTopPadding()+"px"); |
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199 | },_getTopPadding:function(){ |
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200 | if(!this.fixedHeight){ |
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201 | return 0; |
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202 | } |
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203 | return (this.imageHeight-this._currentImage.height)/2; |
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204 | },_loadNextImage:function(){ |
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205 | if(!this.autoLoad){ |
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206 | return;
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207 | } |
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208 | while(this.images.length>=this._imageCounter&&this.images[this._imageCounter]){ |
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209 | this._imageCounter++;
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210 | } |
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211 | this._loadImage(this._imageCounter); |
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212 | },_loadImage:function(_20,_21){ |
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213 | if(this.images[_20]||!this._request){ |
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214 | return;
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215 | } |
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216 | var _22=_20-(_20%(this._request.count||this.pageSize)); |
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217 | this._request.start=_22;
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218 | this._request.onComplete=function(_23){ |
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219 | var _24=_20-_22;
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220 | if(_23&&_23.length>_24){
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221 | _25(_23[_24]); |
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222 | }else{
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223 | } |
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224 | }; |
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225 | var _26=this; |
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226 | var _27=this.imageStore; |
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227 | var _25=function(_28){ |
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228 | var url=_26.imageStore.getValue(_28,_26.imageLargeAttr);
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229 | var img=new Image(); |
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230 | var div=dojo.create("div",{id:_26.id+"_imageDiv"+_20}); |
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231 | div._img=img; |
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232 | var _29=_26.imageStore.getValue(_28,_26.linkAttr);
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233 | if(!_29||_26.noLink){
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234 | div.appendChild(img); |
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235 | }else{
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236 | var a=dojo.create("a",{"href":_29,"target":"_blank"},div); |
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237 | a.appendChild(img); |
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238 | } |
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239 | dojo.connect(img,"onload",function(){ |
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240 | if(_27!=_26.imageStore){
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241 | return;
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242 | } |
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243 | _26._fitImage(img); |
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244 | dojo.attr(div,{"width":_26.imageWidth,"height":_26.imageHeight}); |
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245 | dojo.publish(_26.getLoadTopicName(),[_20]); |
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246 | setTimeout(function(){
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247 | _26._loadNextImage(); |
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248 | },1);
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249 | if(_21){
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250 | _21(); |
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251 | } |
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252 | }); |
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253 | _26.hiddenNode.appendChild(div); |
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254 | var _2a=dojo.create("div",{className:"slideShowTitle"},div); |
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255 | _26.images[_20]=div; |
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256 | dojo.attr(img,"src",url);
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257 | var _2b=_26.imageStore.getValue(_28,_26.titleAttr);
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258 | if(_2b){
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259 | dojo.attr(img,"title",_2b);
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260 | } |
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261 | }; |
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262 | this.imageStore.fetch(this._request); |
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263 | },_stop:function(){ |
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264 | if(this._slideId){ |
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265 | clearTimeout(this._slideId);
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266 | } |
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267 | this._slideId=null; |
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268 | this._timerCancelled=true; |
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269 | dojo.removeClass(this.domNode,"slideShowPaused"); |
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270 | },_prev:function(){ |
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271 | if(this.imageIndex<1){ |
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272 | return;
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273 | } |
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274 | this.showImage(this.imageIndex-1); |
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275 | },_next:function(){ |
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276 | this.showNextImage();
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277 | },_startTimer:function(){ |
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278 | var id=this.id; |
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279 | this._slideId=setTimeout(function(){ |
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280 | dijit.byId(id).showNextImage(true);
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281 | },this.slideshowInterval*1000); |
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282 | },_calcNavDimensions:function(){ |
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283 | dojo.style(this.navNode,"position","absolute"); |
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284 | dojo.style(this.navNode,"top","-10000px"); |
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285 | dojo._setOpacity(this.navNode,99); |
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286 | this.navPlay._size=dojo.marginBox(this.navPlay); |
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287 | this.navPrev._size=dojo.marginBox(this.navPrev); |
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288 | this.navNext._size=dojo.marginBox(this.navNext); |
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289 | dojo._setOpacity(this.navNode,0); |
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290 | dojo.style(this.navNode,{"position":"",top:""}); |
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291 | },_setTitle:function(_2c){ |
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292 | this.titleNode.innerHTML=dojo.string.substitute(this.titleTemplate,{title:_2c,current:1+this.imageIndex,total:this.maxPhotos||""}); |
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293 | },_fitImage:function(img){ |
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294 | var _2d=img.width;
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295 | var _2e=img.height;
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296 | if(_2d>this.imageWidth){ |
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297 | _2e=Math.floor(_2e*(this.imageWidth/_2d));
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298 | img.height=_2e; |
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299 | img.width=_2d=this.imageWidth;
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300 | } |
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301 | if(_2e>this.imageHeight){ |
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302 | _2d=Math.floor(_2d*(this.imageHeight/_2e));
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303 | img.height=this.imageHeight;
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304 | img.width=_2d; |
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305 | } |
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306 | },_handleClick:function(e){ |
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307 | switch(e.target){
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308 | case this.navNext: |
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309 | this._next();
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310 | break;
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311 | case this.navPrev: |
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312 | this._prev();
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313 | break;
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314 | case this.navPlay: |
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315 | this.toggleSlideShow();
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316 | break;
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317 | } |
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318 | },_showNav:function(_2f){ |
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319 | if(this._navShowing&&!_2f){ |
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320 | return;
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321 | } |
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322 | dojo.style(this.navNode,"marginTop","0px"); |
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323 | var _30=dojo.style(this.navNode,"width")/2-this.navPlay._size.w/2-this.navPrev._size.w; |
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324 | dojo.style(this.navPlay,"marginLeft",_30+"px"); |
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325 | var _31=dojo.marginBox(this.outerNode); |
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326 | var _32=this._currentImage.height-this.navPlay._size.h-10+this._getTopPadding(); |
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327 | if(_32>this._currentImage.height){ |
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328 | _32+=10;
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329 | } |
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330 | dojo[this.imageIndex<1?"addClass":"removeClass"](this.navPrev,"slideShowCtrlHide"); |
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331 | dojo[this.imageIndex+1>=this.maxPhotos?"addClass":"removeClass"](this.navNext,"slideShowCtrlHide"); |
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332 | var _33=this; |
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333 | if(this._navAnim){ |
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334 | this._navAnim.stop();
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335 | } |
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336 | if(this._navShowing){ |
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337 | return;
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338 | } |
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339 | this._navAnim=dojo.fadeIn({node:this.navNode,duration:300,onEnd:function(){ |
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340 | _33._navAnim=null;
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341 | }}); |
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342 | this._navAnim.play();
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343 | this._navShowing=true; |
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344 | },_hideNav:function(e){ |
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345 | if(!e||!this._overElement(this.outerNode,e)){ |
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346 | var _34=this; |
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347 | if(this._navAnim){ |
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348 | this._navAnim.stop();
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349 | } |
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350 | this._navAnim=dojo.fadeOut({node:this.navNode,duration:300,onEnd:function(){ |
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351 | _34._navAnim=null;
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352 | }}); |
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353 | this._navAnim.play();
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354 | this._navShowing=false; |
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355 | } |
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356 | },_overElement:function(_35,e){ |
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357 | if(typeof (dojo)=="undefined"){ |
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358 | return false; |
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359 | } |
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360 | _35=dojo.byId(_35); |
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361 | var m={x:e.pageX,y:e.pageY}; |
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362 | var bb=dojo._getBorderBox(_35);
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363 | var _36=dojo.coords(_35,true); |
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364 | var _37=_36.x;
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365 | return (m.x>=_37&&m.x<=(_37+bb.w)&&m.y>=_36.y&&m.y<=(top+bb.h));
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366 | }}); |
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367 | } |