Move the show_full_size code into gallery/lib so that it's generally

available to themes that want to use it.  It should probably
eventually be generalized away from just being for full sized images,
but it's a step in the right direction.

Fixes ticket #427.

1 files changed, 76 insertions, 0 deletions

diff --git a/lib/gallery.show_full_size.js b/lib/gallery.show_full_size.js
new file mode 100644
index 00000000..b2895c23
--- /dev/null
+++ b/lib/gallery.show_full_size.js
@@ -0,0 +1,76 @@
+/**
+ * @todo Move inline CSS out to external style sheet (theme style sheet)
+ */
+var show_full_size = function(image_url, image_width, image_height) {
+  /*
+   * Calculate the size of the image panel based on the size of the image and the size of the
+   * window.  Scale the image so the entire panel fits in the view port.
+   */
+  function _auto_fit(imageWidth, imageHeight) {
+    // ui-dialog gives a padding of 2 pixels
+    var windowWidth = $(window).width() - 10;
+    var windowHeight = $(window).height() - 10;
+
+    /* If the width is greater then scale the image width first */
+    if (imageWidth > windowWidth) {
+      var ratio = windowWidth / imageWidth;
+      imageWidth *= ratio;
+      imageHeight *= ratio;
+    }
+    /* after scaling the width, check that the height fits */
+    if (imageHeight > windowHeight) {
+      var ratio = windowHeight / imageHeight;
+      imageWidth *= ratio;
+      imageHeight *= ratio;
+    }
+
+    // handle the case where the calculation is almost zero (2.14e-14)
+    return {
+      top: ((windowHeight - imageHeight) / 2).toFixed(2),
+      left: ((windowWidth - imageWidth) / 2).toFixed(2),
+      width: imageWidth.toFixed(2),
+      height: imageHeight.toFixed(2)
+    };
+  }
+
+  var width = $(document).width();
+  var height = $(document).height();
+
+  $("body").append('<div id="gFullsizeOverlay" class="ui-dialog-overlay" ' +
+		   'style="border: none; margin: 0; padding: 0; background-color: #000; ' +
+		   'position: absolute; top: 0px; left: 0px; ' +
+		   'width: ' + width + 'px; height: ' + height + 'px; opacity: 0.7; filter: alpha(opacity=70);' +
+		   '-moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; ' +
+		   '-moz-background-inline-policy: -moz-initial; z-index: 1001;"> </div>');
+
+  var image_size = _auto_fit(image_width, image_height);
+
+  $("body").append('<div id="gFullsize" class="ui-dialog ui-widget" ' +
+		   'style="overflow: hidden; display: block; ' +
+		   'position: absolute; z-index: 1002; outline-color: -moz-use-text-color; ' +
+		   'outline-style: none; outline-width: 0px; ' +
+		   'height: ' + image_size.height + 'px; ' +
+		   'width: ' + image_size.width + 'px; ' +
+		   'top: ' + image_size.top + 'px; left: ' + image_size.left + 'px;">' +
+		   '<img id="gFullSizeImage" src="' + image_url + '"' +
+		   'height="' + image_size.height + '" width="' + image_size.width + '"/></div>');
+
+  $("#gFullsize").append('<span id="gFullsizeClose" class="fg-button ui-icon ui-state-default ' +
+			 'ui-icon-closethick ui-corner-all" style="z-index: 1003; position: absolute; ' +
+			 'right: 1em; top: 1em;"></span>');
+  $("#gFullsizeClose").click(function() {
+			       $("#gFullsizeOverlay*").remove();
+			       $("#gFullsize").remove();
+			     });
+  $(window).resize(function() {
+		     $("#gFullsizeOverlay").width($(document).width());
+		     $("#gFullsizeOverlay").height($(document).height());
+		     image_size = _auto_fit(image_width, image_height);
+		     $("#gFullsize").height(image_size.height);
+		     $("#gFullsize").width(image_size.width);
+		     $("#gFullsize").css("top", image_size.top);
+		     $("#gFullsize").css("left", image_size.left);
+		     $("#gFullSizeImage").height(image_size.height);
+		     $("#gFullSizeImage").width(image_size.width);
+		   });
+};