redakcja/static/js/wiki/view_gallery.js

   1 (function($){
   2
   3     function normalizeNumber(pageNumber, pageCount){
   4         // Page number should be >= 1, <= pageCount; 0 if pageCount = 0
   5         var pageNumber = parseInt(pageNumber, 10);
   6
   7         if (!pageCount)
   8             return 0;
   9
  10         if (!pageNumber ||
  11                 isNaN(pageNumber) ||
  12                 pageNumber == Infinity ||
  13                 pageNumber == -Infinity ||
  14                 pageNumber < 1)
  15             return 1;
  16
  17         if (pageNumber > pageCount)
  18             return pageCount;
  19
  20         return pageNumber;
  21     }
  22
  23     function bounds(galleryWidth, galleryHeight, imageWidth, imageHeight){
  24         return {
  25             maxX: 0,
  26             maxY: 0,
  27             minX: galleryWidth - imageWidth,
  28             minY: galleryHeight - imageHeight
  29         }
  30     };
  31
  32     function normalizePosition(x, y, galleryWidth, galleryHeight, imageWidth, imageHeight){
  33         var b = bounds(galleryWidth, galleryHeight, imageWidth, imageHeight);
  34         return {
  35             x: Math.min(b.maxX, Math.max(b.minX, x)),
  36             y: Math.min(b.maxY, Math.max(b.minY, y))
  37         }
  38     };
  39
  40     function fixImageSize(){
  41
  42     }
  43
  44     /*
  45      * Perspective
  46      */
  47     function ScanGalleryPerspective(options){
  48         var old_callback = options.callback || function() { };
  49
  50                 this.noupdate_hash_onenter = true;
  51         this.vsplitbar = 'GALERIA';
  52
  53         options.callback = function(){
  54             var self = this;
  55
  56             this.dimensions = {};
  57             this.zoomFactor = 1;
  58             this.config().page = CurrentDocument.galleryStart;
  59             this.$element = $("#side-gallery");
  60             this.$numberInput = $('.page-number', this.$element);
  61
  62             // ...
  63             var origin = {};
  64             var imageOrigin = {};
  65
  66             this.$image = $('.gallery-image img', this.$element).attr('unselectable', 'on');
  67
  68             // button handlers
  69             this.$numberInput.change(function(event){
  70                 event.preventDefault();
  71                 self.setPage($(this).val());
  72             });
  73
  74             $('.previous-page', this.$element).click(function(){
  75                 self.setPage(parseInt(self.$numberInput.val(),10) - 1);
  76             });
  77
  78             $('.next-page', this.$element).click(function(){
  79                 self.setPage(parseInt(self.$numberInput.val(),10) + 1);
  80             });
  81
  82             $('.zoom-in', this.$element).click(function(){
  83                 self.alterZoom(0.2);
  84             });
  85
  86             $('.zoom-out', this.$element).click(function(){
  87                 self.alterZoom((-0.2));
  88             });
  89
  90             $(window).resize(function(){
  91                 self.dimensions.galleryWidth = self.$image.parent().width();
  92                 self.dimensions.galleryHeight = self.$image.parent().height();
  93             });
  94
  95             this.$image.load(function(){
  96                 console.log("Image loaded.")
  97                 self._resizeImage();
  98             }).bind('mousedown', function() {
  99                                 self.imageMoveStart.apply(self, arguments);
 100                         });
 101
 102
 103
 104                         old_callback.call(this);
 105         };
 106
 107         $.wiki.Perspective.call(this, options);
 108     };
 109
 110     ScanGalleryPerspective.prototype = new $.wiki.Perspective();
 111
 112     ScanGalleryPerspective.prototype._resizeImage = function(){
 113         var $img = this.$image;
 114
 115         $img.css({
 116             width: '',
 117             height: ''
 118         });
 119
 120         this.dimensions = {
 121             width: $img.width() * this.zoomFactor,
 122             height: $img.height() * this.zoomFactor,
 123             originWidth: $img.width(),
 124             originHeight: $img.height(),
 125                     galleryWidth: $img.parent().width(),
 126             galleryHeight: $img.parent().height()
 127         };
 128
 129         if (!(this.dimensions.width && this.dimensions.height)) {
 130             setTimeout(function(){
 131                 $img.load();
 132             }, 100);
 133         }
 134
 135         var position = normalizePosition($img.position().left, $img.position().top, this.dimensions.galleryWidth, this.dimensions.galleryHeight, this.dimensions.width, this.dimensions.height);
 136
 137         $img.css({
 138             left: position.x,
 139             top: position.y,
 140             width: $img.width() * this.zoomFactor,
 141             height: $img.height() * this.zoomFactor
 142         });
 143     };
 144
 145     ScanGalleryPerspective.prototype.setPage = function(newPage){
 146         newPage = normalizeNumber(newPage, this.doc.galleryImages.length);
 147         this.$numberInput.val(newPage);
 148                 this.config().page = newPage;
 149         $('.gallery-image img', this.$element).attr('src', this.doc.galleryImages[newPage - 1]);
 150     };
 151
 152     ScanGalleryPerspective.prototype.alterZoom = function(delta){
 153         var zoomFactor = this.zoomFactor + delta;
 154         if (zoomFactor < 0.2)
 155             zoomFactor = 0.2;
 156         if (zoomFactor > 2)
 157             zoomFactor = 2;
 158         this.setZoom(zoomFactor);
 159     };
 160
 161     ScanGalleryPerspective.prototype.setZoom = function(factor){
 162         this.zoomFactor = factor;
 163
 164         this.dimensions.width = this.dimensions.originWidth * this.zoomFactor;
 165         this.dimensions.height = this.dimensions.originHeight * this.zoomFactor;
 166
 167         // var position = normalizePosition(this.$image.position().left, this.$image.position().top, this.dimensions.galleryWidth, this.dimensions.galleryHeight, this.dimensions.width, this.dimensions.height);
 168
 169                 this._resizeImage();
 170     };
 171
 172         /*
 173          * Movement
 174          */
 175         ScanGalleryPerspective.prototype.imageMoved = function(event){
 176                 event.preventDefault();
 177
 178                 // origin is where the drag started
 179                 // imageOrigin is where the drag started on the image
 180
 181                 var newX = event.clientX - this.origin.x + this.imageOrigin.left;
 182                 var newY = event.clientY - this.origin.y + this.imageOrigin.top;
 183
 184                 var position = normalizePosition(newX, newY, this.dimensions.galleryWidth, this.dimensions.galleryHeight, this.dimensions.width, this.dimensions.height);
 185
 186                 this.$image.css({
 187                         left: position.x,
 188                         top: position.y,
 189                 });
 190
 191                 return false;
 192         };
 193
 194         ScanGalleryPerspective.prototype.imageMoveStart = function(event){
 195                 event.preventDefault();
 196
 197                 var self = this;
 198
 199                 this.origin = {
 200                         x: event.clientX,
 201                         y: event.clientY
 202                 };
 203
 204                 this.imageOrigin = self.$image.position();
 205                 $(document).bind('mousemove.gallery', function(){
 206                         self.imageMoved.apply(self, arguments);
 207                 }).bind('mouseup.gallery', function() {
 208                         self.imageMoveStop.apply(self, arguments);
 209                 });
 210
 211                 return false;
 212         };
 213
 214         ScanGalleryPerspective.prototype.imageMoveStop = function(event){
 215                 $(document).unbind('mousemove.gallery').unbind('mouseup.gallery');
 216         };
 217
 218     /*
 219      * Loading gallery
 220      */
 221     ScanGalleryPerspective.prototype.onEnter = function(success, failure){
 222         var self = this;
 223
 224         $.wiki.Perspective.prototype.onEnter.call(this);
 225
 226         $('.vsplitbar').not('.active').trigger('click');
 227         $(".vsplitbar-title").html("&darr;&nbsp;GALERIA&nbsp;&darr;");
 228
 229         this.doc.refreshGallery({
 230             success: function(doc, data){
 231                 self.$image.show();
 232                                 console.log("gconfig:", self.config().page );
 233                                 self.setPage( self.config().page );
 234                 $('#imagesCount').html("/" + doc.galleryImages.length);
 235
 236                 $('.error_message', self.$element).hide();
 237                 if(success) success();
 238             },
 239             failure: function(doc, message){
 240                 self.$image.hide();
 241                 $('.error_message', self.$element).show().html(message);
 242                 if(failure) failure();
 243             }
 244         });
 245
 246     };
 247
 248         ScanGalleryPerspective.prototype.onExit = function(success, failure) {
 249
 250         };
 251
 252     $.wiki.ScanGalleryPerspective = ScanGalleryPerspective;
 253
 254 })(jQuery);