+ this.updatecoords();
+ var newstyle = this.calcsize(this.cache.curr);
+ this.ondisplay.setStyles(newstyle);
+ /* check if we need reload */
+ },
+
+ /* prev, play, stop, next, exit, comm are methods for button presses */
+
+ prev: function(){
+ this.cleartimer();
+ this.stopfx();
+ if (this.currentid > 0) {
+ this.show(this.currentid-1);
+ } else {
+ /* alert('show.prev called beyond first element'); */
+ }
+ },
+
+ stop: function(){
+ this.cleartimer()
+ this.isplaying = false;
+ this.controls.running(0);
+ },
+
+ play: function(){
+ this.isplaying = true;
+ this.timer = this.autonext.delay(this.delay,this);
+ this.controls.running(1);
+ },
+
+ toggleplay: function(){
+ if (this.isplaying) { this.stop(); }
+ else { this.play(); }
+ },
+
+ next: function(){
+ this.cleartimer();
+ this.stopfx();
+ if (this.currentid < this.vimgs.length-1) {
+ this.show(this.currentid+1);
+ } else {
+ /* alert('show.next called beyond last element'); */
+ }
+ },
+
+ exit: function(){
+ this.cleartimer();
+ this.stopfx();
+ this.prevdisplay.setStyle('display', 'none');
+ this.ondisplay.setStyle('display', 'none');
+ document.location.href = this.baseurl;
+ this.options.cbExit();
+ },
+
+ comm: function(){
+ /* alert('show.comm called, do nothing'); */
+ },
+
+ /* Entry point: called to start doing things */
+
+ start: function(id, play){
+ this.options.cbStart();
+ this.isplaying = play;
+ this.controls.running(this.isplaying);
+ this.updatecoords();
+ this.show(id);
+ return false; /* to make it usable from href links */
+ },
+
+ /* "Private" methods to do the real job */
+
+ show: function(id){
+ /* alert('called show.show('+id+')'); */
+ this.currentid = id;
+ var newcache = {
+ prev: (id > 0)?this.prepare(id-1):{},
+ curr: this.prepare(id),
+ next: (id < (this.vimgs.length-1))?this.prepare(id+1):{},
+ };
+ delete this.cache;
+ this.cache = newcache;
+ if (this.cache.curr.ready) {
+ this.display(this.cache.curr);
+ } else {
+ this.pendingload = true;
+ this.showloading();
+ }
+ document.location.href = this.baseurl+'#'+this.vimgs[id][0];
+ this.controls.info(id,this.vimgs.length,
+ '#'+this.vimgs[id][0],
+ this.vimgs[id][1]);
+ },
+
+ prepare: function(id){
+ var vi;
+ for (vi=0;vi<this.vimgs[id][2].length-1;vi++) {
+ if ((this.vimgs[id][2][vi][0] >= this.target.width) ||
+ (this.vimgs[id][2][vi][1] >= this.target.height)) {
+ break;
+ }
+ }
+ /* alert('prepare id='+id+', selected '+vi+' at '+
+ this.vimgs[id][2][vi][0]+'x'+
+ this.vimgs[id][2][vi][1]); */
+ var cachel;
+ ['prev', 'curr', 'next'].each(function(el){
+ if (this.cache[el] &&
+ this.cache[el].id == id &&
+ this.cache[el].vi == vi) {
+ cachel = this.cache[el];
+ }
+ }.bind(this));
+ if (! cachel) {
+ cachel = {
+ id: id,
+ vi: vi,
+ ready: false,
+ url: this.vimgs[id][2][vi][2],
+ };
+ cachel.img = this.bgload(cachel);
+ }
+ return cachel;
+ },
+
+ bgload: function(cachel){
+ /* alert('bgload: id='+cachel.id+' vi='+cachel.vi+
+ ' url='+cachel.url); */
+ return new Asset.image(this.vimgs[cachel.id][2][cachel.vi][2],{
+ id: this.vimgs[cachel.id][0],
+ title: this.vimgs[cachel.id][1],
+ onload: this.loadcomplete.bind(this,[cachel]),
+ });
+ },
+
+ loadcomplete: function(cachel){
+ /* alert('loadcomplete '+cachel.url+' id='+cachel.id+
+ ' vi='+cachel.vi); */
+ cachel.ready = true;
+ if (cachel.id == this.currentid &&
+ this.pendingload) {
+ this.pendingload = false;
+ this.hideloading();
+ this.display(cachel);
+ }
+ },
+
+ display: function(cachel){
+ var newstyle = this.calcsize(cachel);
+ var newimg = cachel.img.clone();
+ newimg.setStyles(newstyle);
+ newimg.setStyles({
+ zIndex: 3,
+ opacity: 0,
+ });
+ this.prevdisplay.dispose();
+ this.prevdisplay = this.ondisplay.clone().
+ setStyle('zIndex', 2).injectInside(this.container.domelement());
+ newimg.replaces(this.ondisplay);
+ this.ondisplay = newimg;
+ this.effect();
+ },
+
+ effect: function(){
+ this.fx = new Fx.Tween(this.ondisplay, {
+ duration: this.options.fxduration,
+ });
+ this.fx.addEvent('complete',this.displaycomplete.bind(this));
+ this.fx.start('opacity', 0, 1);
+ },
+
+ displaycomplete: function(){
+ this.prevdisplay.setStyle('display', 'none');
+ if (this.isplaying) {
+ this.timer = this.autonext.delay(this.delay,this);
+ }
+ },
+
+ autonext: function(){
+ if (this.isplaying) {
+ if (this.currentid < this.vimgs.length-1) {
+ this.show(this.currentid+1);
+ } else {
+ this.exit();
+ }
+ }
+ },
+
+ calcsize: function(cachel){
+ var factor = 1;
+ var candidate;
+ candidate = this.target.width /
+ this.vimgs[cachel.id][2][cachel.vi][0];
+ if (factor > candidate) { factor = candidate; }
+ candidate = this.target.height /
+ this.vimgs[cachel.id][2][cachel.vi][1];
+ if (factor > candidate) { factor = candidate; }
+ var w = Math.round(this.vimgs[cachel.id][2][cachel.vi][0] *
+ factor);
+ var h = Math.round(this.vimgs[cachel.id][2][cachel.vi][1] *
+ factor);
+ var t = Math.round((this.coords.height-h)/2);
+ var l = Math.round((this.coords.width-w)/2);
+ /* alert('new size: '+w+'x'+h+'+'+l+'+'+t); */
+ return {
+ position: 'absolute',
+ top: t+'px',
+ left: l+'px',
+ width: w,
+ height: h,
+ };
+ },
+
+ showloading: function(){
+ this.loadingdiv.setStyle('display', 'block');
+ },
+
+ hideloading: function(){
+ this.loadingdiv.setStyle('display', 'none');
+ },
+
+ cleartimer: function(){
+ if (this.isplaying) { $clear(this.timer); }
+ },
+
+ stopfx: function(){
+ if (this.fx) this.fx.cancel();