X-Git-Url: https://git.mdrn.pl/redakcja.git/blobdiff_plain/ffe377758219d2500806c0807c6e902be8eba4fb..c52436a7e25876ee3509df2467c2a9ef33303436:/platforma/static/js/wiki/view_gallery.js

diff --git a/platforma/static/js/wiki/view_gallery.js b/platforma/static/js/wiki/view_gallery.js
new file mode 100644
index 00000000..69761ca3
--- /dev/null
+++ b/platforma/static/js/wiki/view_gallery.js
@@ -0,0 +1,240 @@
+(function($){
+
+    function normalizeNumber(pageNumber, pageCount){
+        // Numer strony musi być pomiędzy 1 a najwyższym numerem
+        var pageNumber = parseInt(pageNumber, 10);
+
+        if (!pageNumber ||
+        pageNumber == NaN ||
+        pageNumber == Infinity ||
+        pageNumber == -Infinity ||
+        pageNumber < 1)
+            return 1;
+
+        if (pageNumber > pageCount)
+            return pageCount;
+
+        return pageNumber;
+    }
+
+    function bounds(galleryWidth, galleryHeight, imageWidth, imageHeight){
+        return {
+            maxX: 0,
+            maxY: 0,
+            minX: galleryWidth - imageWidth,
+            minY: galleryHeight - imageHeight
+        }
+    };
+
+    function normalizePosition(x, y, galleryWidth, galleryHeight, imageWidth, imageHeight){
+        var b = bounds(galleryWidth, galleryHeight, imageWidth, imageHeight);
+        return {
+            x: Math.min(b.maxX, Math.max(b.minX, x)),
+            y: Math.min(b.maxY, Math.max(b.minY, y))
+        }
+    };
+
+    function fixImageSize(){
+
+    }
+
+    /*
+     * Perspective
+     */
+    function ScanGalleryPerspective(options){
+        var old_callback = options.callback || function() { };
+
+        options.callback = function(){
+            var self = this;
+
+            this.dimensions = {};
+            this.zoomFactor = 1;
+            this.$element = $("#side-gallery");
+            this.$numberInput = $('.page-number', this.$element);
+
+            // ...
+            var origin = {};
+            var imageOrigin = {};
+
+            this.$image = $('.gallery-image img', this.$element).attr('unselectable', 'on');
+
+            // button handlers
+            this.$numberInput.change(function(event){
+                event.preventDefault();
+                self.setPage($(this).val());
+            });
+
+            $('.previous-page', this.$element).click(function(){
+                self.setPage(parseInt(self.$numberInput.val(),10) - 1);
+            });
+
+            $('.next-page', this.$element).click(function(){
+                self.setPage(parseInt(self.$numberInput.val(),10) + 1);
+            });
+
+            $('.zoom-in', this.$element).click(function(){
+                self.alterZoom(0.2);
+            });
+
+            $('.zoom-out', this.$element).click(function(){
+                self.alterZoom((-0.2));
+            });
+
+            $(window).resize(function(){
+                self.dimensions.galleryWidth = self.$image.parent().width();
+                self.dimensions.galleryHeight = self.$image.parent().height();
+            });
+
+            $('.gallery-image img', this.$element).load(function(){
+                console.log("Image loaded.")
+                self._resizeImage();
+            }).bind('mousedown', function() {
+				self.imageMoveStart.apply(self, arguments);
+			});
+
+			old_callback.call(this);
+        };
+
+        $.wiki.Perspective.call(this, options);
+    };
+
+    ScanGalleryPerspective.prototype = new $.wiki.Perspective();
+
+    ScanGalleryPerspective.prototype._resizeImage = function(){
+        var $img = this.$image;
+
+        $img.css({
+            width: null,
+            height: null
+        });
+
+        this.dimensions = {
+            width: $img.width() * this.zoomFactor,
+            height: $img.height() * this.zoomFactor,
+            originWidth: $img.width(),
+            originHeight: $img.height(),
+		    galleryWidth: $img.parent().width(),
+            galleryHeight: $img.parent().height()
+        };
+
+        if (!(this.dimensions.width && this.dimensions.height)) {
+            setTimeout(function(){
+                $img.load();
+            }, 100);
+        }
+
+        var position = normalizePosition($img.position().left, $img.position().top, this.dimensions.galleryWidth, this.dimensions.galleryHeight, this.dimensions.width, this.dimensions.height);
+
+        $img.css({
+            left: position.x,
+            top: position.y,
+            width: $img.width() * this.zoomFactor,
+            height: $img.height() * this.zoomFactor
+        });
+    };
+
+    ScanGalleryPerspective.prototype.setPage = function(newPage){
+        newPage = normalizeNumber(newPage, this.doc.galleryImages.length);
+        this.$numberInput.val(newPage);
+        $('.gallery-image img', this.$element).attr('src', this.doc.galleryImages[newPage - 1]);
+    };
+
+    ScanGalleryPerspective.prototype.alterZoom = function(delta){
+        var zoomFactor = this.zoomFactor + delta;
+        if (zoomFactor < 0.2)
+            zoomFactor = 0.2;
+        if (zoomFactor > 2)
+            zoomFactor = 2;
+        this.setZoom(zoomFactor);
+    };
+
+    ScanGalleryPerspective.prototype.setZoom = function(factor){
+        this.zoomFactor = factor;
+
+        this.dimensions.width = this.dimensions.originWidth * this.zoomFactor;
+        this.dimensions.height = this.dimensions.originHeight * this.zoomFactor;
+
+        // var position = normalizePosition(this.$image.position().left, this.$image.position().top, this.dimensions.galleryWidth, this.dimensions.galleryHeight, this.dimensions.width, this.dimensions.height);
+
+		this._resizeImage();
+        /* this.$image.css({
+            width: this.dimensions.width,
+            height: this.dimensions.height,
+            left: position.x,
+            top: position.y
+        });*/
+    };
+
+	/*
+	 * Movement
+	 */
+	ScanGalleryPerspective.prototype.imageMoved = function(event){
+		event.preventDefault();
+
+		// origin is where the drag started
+		// imageOrigin is where the drag started on the image
+
+		var newX = event.clientX - this.origin.x + this.imageOrigin.left;
+		var newY = event.clientY - this.origin.y + this.imageOrigin.top;
+
+		var position = normalizePosition(newX, newY, this.dimensions.galleryWidth, this.dimensions.galleryHeight, this.dimensions.width, this.dimensions.height);
+
+		this.$image.css({
+			left: position.x,
+			top: position.y,
+		});
+
+		return false;
+	};
+
+	ScanGalleryPerspective.prototype.imageMoveStart = function(event){
+		event.preventDefault();
+
+		var self = this;
+
+		this.origin = {
+			x: event.clientX,
+			y: event.clientY
+		};
+
+		this.imageOrigin = self.$image.position();
+		$(document).bind('mousemove.gallery', function(){
+			self.imageMoved.apply(self, arguments);
+		}).bind('mouseup.gallery', function() {
+			self.imageMoveStop.apply(self, arguments);
+		});
+
+		return false;
+	};
+
+	ScanGalleryPerspective.prototype.imageMoveStop = function(event){
+		$(document).unbind('mousemove.gallery').unbind('mouseup.gallery');
+	};
+
+    /*
+     * Loading gallery
+     */
+    ScanGalleryPerspective.prototype.onEnter = function(success, failure){
+        var self = this;
+
+        $.wiki.Perspective.prototype.onEnter.call(this);
+
+        this.doc.refreshGallery({
+            success: function(doc, data){
+                self.$image.show();
+				self.setPage( self.$numberInput.val() );
+
+                $('.error_message', self.$element).hide();
+                if(success) success();
+            },
+            failure: function(doc, message){
+                self.$image.hide();
+                $('.error_message', self.$element).show().html(message);
+                if(failure) failure();
+            }
+        });
+    };
+
+    $.wiki.ScanGalleryPerspective = ScanGalleryPerspective;
+
+})(jQuery);
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