js/photo-tags.js

   1 var pics = d3.select(".pics").select("ul");
   2 var page;
   3 var maxpage;
   4
   5 function init()
   6 {
   7   /* populate data list with tags*/
   8   d3.json(webbase+"/getjson.php?S", function(json) {
   9       d3.select("#MyTags").selectAll("option").data(json)
  10         .enter().append("option").attr("value",function(d) {return d.name});
  11     });
  12
  13   /* update form to point to new link */
  14   d3.select("input").on("keyup", function(d) {
  15       d3.select('form').attr("action",webbase+"/tag/"+document.getElementById('MyTagsInput').value.replace(" ","+"));
  16   });
  17
  18   d3.select("#currenttags").select("a").remove();
  19   if (T!="")
  20     {
  21       var mycurrenttags = T.split(",");
  22
  23       d3.select("#currenttags").selectAll("a")
  24         .data(mycurrenttags).enter()
  25         .append("a").attr("class","btn btn-small").text( function(d) {return d;} )
  26         .on("mouseover", function(d){ d3.select(this).classed("btn-danger",true)})
  27         .on("mouseout", function(d){ d3.select(this).classed("btn-danger",false)})
  28         .attr("href", function(d) { return removeTag(T.split(","),d) });
  29     };
  30 }
  31
  32 function removeTag(alltags,removetag)
  33 {
  34     /* return a link to a page with 'removetag' removed from the array of tags*/
  35     var index = alltags.indexOf(removetag);
  36     alltags.splice(index, 1);
  37     if (alltags.length)
  38         return webbase+'/tag/'+alltags.join(",");
  39     else
  40         return webbase;
  41 }
  42
  43
  44 function load_content() {
  45   // d3.select(".debug").text("T,P,N = *"+T+"* *"+page+"* *"+N+"*");
  46
  47   if (ID>=0)
  48     url = webbase+"/getjson.php?ID="+ID;
  49   else if(T!="")
  50     url = webbase+"/getjson.php?T="+T+"&P="+page;
  51   else
  52     url = webbase+"/getjson.php?P="+page;
  53
  54   /* update pics */
  55   d3.json(url, function(json) {
  56       count=0;
  57       pics.selectAll("li").remove();
  58       picdata=json;
  59
  60       /* if ID is set, just show one pictures, else create an array of pictures */
  61       if (ID>=0)
  62         {
  63             var singlepicspace=pics.selectAll("li").data(picdata, function(d){return ID;}).
  64                 enter().append("li").append("div").attr("class","singlepic");
  65             singlepicspace.append("img").attr("class","left").attr("src",webbase+"/icons/left.png");
  66             singlepicspace.append("img")
  67                 .attr("class","large")
  68                 .attr("src",function(d) {
  69                     s = d.base_uri+'/'+d.filename;
  70                     s = s.replace('file:\/\/'+dbprefix,webbase+'/Photos-small/');
  71                     return s;
  72                 });
  73             singlepicspace.append("img").attr("class","right").attr("src",webbase+"/icons/right.png");
  74             /* show description and time of photo */
  75             singlepicspace.append("p")
  76                 .text(function(d) {
  77                     var date = new Date(d.time*1000);
  78                     if (d.description=="")
  79                         return "Time: "+date.toUTCString();
  80                     else
  81                         return "Description: "+d.description + "Time: "+date.toUTCString();
  82                 });
  83             /* show tags */
  84             d3.json(webbase+"/getjson.php?IDT="+ID, function(jsontag) {
  85                 tags=0;
  86                 d3.select("#pictags").selectAll("span").remove();
  87                 d3.select("#pictags").selectAll("span").data(jsontag)
  88                     .enter().append("span")
  89                     .attr("class","btn btn-small")
  90                     .text( function(t) {
  91                         tags=1;
  92                         return t.name;
  93                     })
  94                     .on("mouseover", function(d){ d3.select(this).classed("btn-success",true)})
  95                     .on("mouseout",  function(d){ d3.select(this).classed("btn-success",false)})
  96                     .on("click",     function(d){ document.location.href=webbase+'/tag/'+d.name});
  97                 if(tags)
  98                 d3.select("#pictags").insert("span",":first-child").text("tags in current picture:");
  99             });
 100
 101             update_thumbnails();
 102         }
 103       else
 104         {
 105           d3.select(".nextprev").select("ul").selectAll("li").remove();
 106           pics.selectAll("li").data(picdata)
 107             .enter().append("li")
 108             .append("a")
 109             .on("click", function(d) { load_pic(d.id); })
 110             .append("img")
 111             .attr("src",function(d) {
 112                 count++;
 113                 s= d.base_uri+'/'+d.filename;
 114                 s = s.replace('file:\/\/'+dbprefix,webbase+'/Photos-tiny/');
 115                 return s;
 116               });
 117         };
 118       checkbutton();
 119       update_permalink()
 120     });
 121 }
 122
 123 function update_permalink() {
 124   /* update permalink */
 125
 126   permalink = webbase;
 127
 128   if(T!="")
 129     permalink += '/tag/' + T;
 130   if(page!=1)
 131     permalink += '/page/' + page;
 132   if(ID>0)
 133     permalink += '/pic/' + ID;
 134
 135   d3.select(".permalink").html("Permalink: <a href=\""+permalink+"\">"+permalink+"</a>");
 136 }
 137
 138 function prev_page() {
 139     if (page>1) page=page-1;
 140     load_content();
 141     update_page_index();
 142 }
 143
 144 function next_page() {
 145     if (page<maxpage) page=page+1;
 146     load_content();
 147     update_page_index();
 148 }
 149
 150 function load_pic(myid) {
 151   ID=myid;
 152   update_page_index();
 153   load_content();
 154 }
 155
 156 function tagcloud() {
 157
 158   url = webbase+"/getjson.php?CLOUD=1";
 159
 160   pics.selectAll("li").remove();
 161
 162   var svgelement=pics.append("li")
 163     .append("svg").attr("width",400).attr("height",400);
 164
 165   /* update pics */
 166   d3.json(url, function(json) {
 167       svgelement.selectAll("text").data(json).enter().append("text")
 168         .style("font-size", function(d){return (Math.log(d.count+1)/3.0+0.5)+"em"})
 169         .text(function(d) { return d.name+" "; })
 170         .on("mouseover", function(d){ d3.select(this).style("color","red")  })
 171         .on("mouseout",  function(d){ d3.select(this).style("color","black")})
 172         .on("click", function(d) { document.location.href=webbase+'/tag/'+d.name});
 173     });
 174 }
 175
 176 function update_thumbnails(){
 177   if(T!="")
 178     url2 = webbase+"/getjson.php?NP=1&T="+T+"&ID="+ID;
 179   else
 180     url2 = webbase+"/getjson.php?NP=1&ID="+ID;
 181
 182   var IDprev=-1;
 183   var IDnext=-1;
 184   var IDcurr=-1;
 185   d3.json(url2, function(json2) {
 186       /* figure out where the arrows on the pic should link to */
 187       all=""
 188       for (var i in json2){
 189         if( IDcurr != ID )
 190           {
 191             IDprev = IDcurr;
 192             IDcurr = IDnext;
 193             IDnext = json2[i].id;
 194           };
 195       }
 196
 197       var thumbs= d3.select(".nextprev").select("ul").selectAll("li").data(json2, function(d) {return d.id;});
 198
 199       thumbs.exit().select("img").transition().duration(1000).style("height","0px").transition().duration(1050).remove();
 200       thumbs.exit().transition().duration(1050).remove();
 201       thumbs.enter().append("li")
 202         .append("a")
 203         .on("click", function(d) {
 204             load_pic(d.id); }
 205           )
 206         .append("img")
 207         .attr("src",function(d) {
 208             s= d.base_uri+'/'+d.filename;
 209             s = s.replace('file:\/\/'+dbprefix,webbase+'/Photos-tiny/');
 210             return s;
 211           })
 212         .style("height","0px")
 213         .transition().duration(500)
 214         .style("height","100px");
 215
 216       /* resort elements */
 217       d3.select(".nextprev").select("ul").selectAll("li").sort(function(a,b){return a.id-b.id;});
 218       d3.select(".nextprev").select("ul").selectAll("li").select("a").select("img")
 219           .classed("current",function(d){return (d.id==IDcurr);});
 220
 221
 222       /* add links for left/right arrows */
 223       if (IDprev != -1 )
 224           d3.select(".left" ).on("click", function() { load_pic(IDprev); });
 225       if (IDnext != -1 )
 226           d3.select(".right").on("click", function() { load_pic(IDnext); });
 227
 228       /* keyboard shortcuts */
 229       $(document)
 230           .keydown(  function (e) {
 231               if(e.which == 37 && IDprev != -1) { $(document).unbind('keydown'); load_pic(IDprev);  }
 232               if(e.which == 39 && IDnext != -1) { $(document).unbind('keydown'); load_pic(IDnext);  }
 233           });
 234   });
 235 }
 236
 237 function checkbutton()
 238 {
 239   if (page==1)
 240     { d3.select(".pagination ul li:first-child").classed("disabled", true);}
 241   else
 242     { d3.select(".pagination ul li:first-child").classed("disabled", false);};
 243
 244   if (page==maxpage)
 245     { d3.select(".pagination ul li:last-child").classed("disabled", true);}
 246   else
 247     { d3.select(".pagination ul li:last-child").classed("disabled", false);};
 248 }
 249
 250 function update_page_index()
 251 {
 252   /* load number of pictures */
 253   myID = "";
 254   if(ID > 0)
 255     myID = "&ID="+ID;
 256
 257   if(T!="")
 258     url = webbase+"/getjson.php?C=1&T="+T+myID;
 259   else
 260     url = webbase+"/getjson.php?C=1"+myID;
 261
 262   d3.json(url, function(json) {
 263       /* update index, show only page +-5 pages max */
 264       n  = Math.floor( json[0].total/N   ); /* how many pages */
 265       nr = Math.floor( (json[0].row-1)/N ); /* which row are we in? rowid starts at 1 not 0 */
 266
 267       maxpage=n+1;
 268
 269       if(nr > 0) page = nr+1;
 270
 271       var mydata = new Array();  // add json data  {page: <nr>, name: <name>} ; at end reform array into real json and use d3 to parse it
 272
 273       if(n>0)
 274       {
 275           mydata.push('{ page:0.1, name:"Prev"}');
 276           if(page>4)
 277           {
 278               mydata.push('{ page:1, name:"1"}');
 279               mydata.push('{ page:1.5, name:"..."}');
 280               start = page-3;
 281           }
 282           else
 283               start=1;
 284
 285           for(i=start;i<=Math.min(n+1,page+3);i++)
 286               mydata.push('{ page:'+i+', name:"'+i+'"}');
 287
 288           if(page+3<n)
 289           {
 290               mydata.push('{ page:'+(n+0.5)+', name:"..."}');
 291               mydata.push('{ page:'+(n+1)+', name:"'+(n+1)+'"}');
 292           }
 293           else if(page+3==n)
 294               mydata.push('{ page:'+(n+1)+', name:"'+(n+1)+'"}');
 295
 296           mydata.push('{ page:'+(n+2.1)+', name:"Next"}');
 297       }
 298       else
 299       {
 300           mydata.push('{ page:0.1, name:"Prev"}');
 301           mydata.push('{ page:1.1, name:"Next"}');
 302       }
 303
 304       mydata = "["+mydata.join(",")+"]";
 305       mydata =  eval('(' + mydata + ')');
 306
 307       /* remove old elements */
 308       d3.selectAll(".pagination").select("ul").selectAll("li").remove();
 309
 310       /* create new ones */
 311       var pageindex = d3.selectAll(".pagination").select("ul").selectAll("li").data(mydata, function(d){return d.page});
 312       pageindex.selectAll("li").data(mydata, function(d){ return d.page; });
 313       pageindex.enter().append("li").append("a")
 314           .on("click", function(d) { if(  (d.page - Math.floor(d.page)) ==0 )  {page=d.page; ID=-1;load_content(); update_page_index();} })
 315           .text(function(d) {return " "+d.name+" "});
 316
 317       pageindex.sort( function(a,b) { return a.page- b.page;} );
 318
 319       /* add callbacks to prev and next buttons */
 320       d3.selectAll(".pagination ul li:first-child a").on("click", function(){prev_page();});
 321       d3.selectAll(".pagination ul li:last-child  a").on("click", function(){next_page();});
 322
 323       d3.select(".pagination").select("ul").selectAll("li").classed("active", false);
 324       d3.select(".pagination").select("ul").selectAll("li").classed("active", function(d) {return ( d.page == page ); });
 325       checkbutton();
 326     } );
 327
 328 }