/* gallery.js - Revision: Spry Preview Release 1.4 */ // Copyright (c) 2006. Adobe Systems Incorporated. // All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are met: // // * Redistributions of source code must retain the above copyright notice, // this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above copyright notice, // this list of conditions and the following disclaimer in the documentation // and/or other materials provided with the distribution. // * Neither the name of Adobe Systems Incorporated nor the names of its // contributors may be used to endorse or promote products derived from this // software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE // POSSIBILITY OF SUCH DAMAGE. // Global variables: var gThumbWidth; if (gThumbWidth == undefined) gThumbWidth = 24; var gThumbHeight; if (gThumbHeight == undefined) gThumbHeight = 24; var gSlideShowInterval; if (gSlideShowInterval == undefined) gSlideShowInterval = 3000; // msecs between images. var gAutoStartSlideShow; if (gAutoStartSlideShow == undefined) gAutoStartSlideShow = true; var gBehaviorsArray = []; var gSlideShowOn = false; var gSlideShowTimer = null; var gImageLoader = null; dsAlbumBook.addObserver(function(nType, notifier, data) { if (nType != "onPostLoad") return; gAutoStartSlideShow = (dsAlbumBook.getData()[0]["@autoStart"] == "true"); TranslateAttrs(dsAlbumBook.getData(true), [ "@title", "@description" ]); }); dsAlbums.addObserver(function(nType, notifier, data) { if (nType != "onPostLoad") return; TranslateAttrs(dsAlbums.getData(true), [ "@title", "@description" ]); }); dsSlides.addObserver(function(nType, notifier, data) { if (nType == "onPreLoad") { StopSlideShow(); return; } else if (nType != "onPostLoad") return; TranslateAttrs(dsSlides.getData(true), [ "@caption" ]); }); function TranslateAttrs(rows, attrs) { var numRows = rows.length; var numAttrs = attrs.length; for (var i = 0; i < numRows; i++) { var row = rows[i]; for (var j = 0; j < numAttrs; j++) { var attr = attrs[j]; var str = row[attr]; if (str) row[attr] = Spry.Utils.encodeEntities(unescape(str)); } } } // Register a callback on the thumbnails region so we can show the first // image in the data set after all the thumbnails have loaded. Spry.Data.Region.addObserver("thumbnails", function(nType, notifier, data) { if (nType == "onPostUpdate") { ShowCurrentImage(); if (gAutoStartSlideShow) StartSlideShow(true); } }); // Trigger the transition animation from the current image // being displayed to the image at imgPath. function SetMainImage(imgPath, width, height, tnID) { var img = document.getElementById("mainImage"); if (!img) return; CancelBehavior("mainImage"); Spry.Utils.SelectionManager.clearSelection("thumbnailSelection"); if (tnID) Spry.Utils.SelectionManager.select("thumbnailSelection", document.getElementById(tnID), "selectedThumbnail"); if (gImageLoader) { gImageLoader.onload = function() {}; gImageLoader = null; } gBehaviorsArray["mainImage"] = new Spry.Effect.Opacity(img, Spry.Effect.getOpacity(img), 0, { duration: 400, finish: function() { gBehaviorsArray["mainImage"] = new Spry.Effect.Size(img.parentNode, Spry.Effect.getDimensions(img.parentNode), { width: width, height: height, units:"px"}, {duration: 400, finish: function() { // Use an image loader to make sure we only fade in the new image after // it is completely loaded. gImageLoader = new Image(); gImageLoader.onload = function() { img.src = gImageLoader.src; gImageLoader = null; gBehaviorsArray["mainImage"] = new Spry.Effect.Opacity(img, 0, 1, { duration: 400, finish: function() { gBehaviorsArray["mainImage"] = null; // Our new image is fully visible now. If the slide show // is on, fire off the timer for the next image. if (gSlideShowOn) SetSlideShowTimer(); }}); gBehaviorsArray["mainImage"].start(); }; gImageLoader.src = imgPath; } }); gBehaviorsArray["mainImage"].start(); } }); gBehaviorsArray["mainImage"].start(); } // Cancel the animation behavior of the object with the given id. function CancelBehavior(id) { if (gBehaviorsArray[id]) { gBehaviorsArray[id].cancel(); gBehaviorsArray[id] = null; } } function SizeAndPosition(id, toX, toY, toWidth, toHeight, callback) { CancelBehavior(id); var effectCluster = new Spry.Effect.Cluster( { finish: callback } ); var ele = Spry.Effect.getElement(id); var moveEffect = new Spry.Effect.Move(ele, Spry.Effect.getPosition(ele), { x: toX, y: toY, units: "px" }, { duration: 400 }); var sizeEffect = new Spry.Effect.Size(ele, Spry.Effect.getDimensions(ele), { width: toWidth, height: toHeight, units: "px" }, { duration: 400 }); effectCluster.addParallelEffect(moveEffect); effectCluster.addParallelEffect(sizeEffect); //effectCluster.finish = callback; gBehaviorsArray[id] = effectCluster; gBehaviorsArray[id].start(); } // Trigger the animation of the thumbnail growing. function GrowThumbnail(img, width, height) { Spry.Utils.addClassName(img, "inFocus"); img.style.zIndex = 150; var id = img.getAttribute("id"); var twidth = Math.floor(width * .75); var theight = Math.floor(height * .75); var tx = (gThumbWidth - twidth) / 2; var ty = (gThumbHeight - theight) / 2; SizeAndPosition(id, tx, ty, twidth, theight, function(b){gBehaviorsArray[id] = null;}); } // Trigger the animation of the thumbnail shrinking. function ShrinkThumbnail(img) { Spry.Utils.addClassName(img, "inFocus"); img.style.zIndex = 1; var id = img.getAttribute("id"); SizeAndPosition(id, 0, 0, gThumbWidth, gThumbHeight, function(b){gBehaviorsArray[id] = null; Spry.Utils.removeClassName(img, "inFocus");}); } // Show the image of the current selected row inside the dsSlides data set. function ShowCurrentImage() { var curRow = dsSlides.getCurrentRow(); SetMainImage(dsAlbums.getCurrentRow()["@path"] + "/" + curRow["@src"], curRow["@width"], curRow["@height"], "tn" + curRow["ds_RowID"]); } // Utility function to advance (forwards or backwards) the current selected row // in dsSlides. This has the side effect of "selecting" the thumbnail and image // of the new current row. function AdvanceToNextImage(moveBackwards) { var rows = dsSlides.getData(); var curRow = dsSlides.getCurrentRow(); if (rows.length < 1) return; for (var i = 0; i < rows.length; i++) { if (rows[i] == curRow) { if (moveBackwards) --i; else ++i; break; } } if (!moveBackwards && i >= rows.length) i = 0; else if (moveBackwards && i < 0) i = rows.length - 1; curRow = rows[i]; dsSlides.setCurrentRow(curRow["ds_RowID"]); ShowCurrentImage(); } function SetSlideShowTimer() { KillSlideShowTimer(); gSlideShowTimer = setTimeout(function(){ gSlideShowTimer = null; AdvanceToNextImage(false); }, gSlideShowInterval); } function KillSlideShowTimer() { if (gSlideShowTimer) clearTimeout(gSlideShowTimer); gSlideShowTimer = null; } // Start the slide show that runs forwards through all // the rows in dsSlides. function StartSlideShow(skipTimer) { gSlideShowOn = true; if (!skipTimer) SetSlideShowTimer(); var playLabel = document.getElementById("playLabel"); if (playLabel) playLabel.firstChild.data = "Pause"; } // Kill any slide show that is currently running. function StopSlideShow() { gSlideShowOn = false; KillSlideShowTimer(); var playLabel = document.getElementById("playLabel"); if (playLabel) playLabel.firstChild.data = "Play"; } function HandleThumbnailClick(id) { StopSlideShow(); dsSlides.setCurrentRow(id); ShowCurrentImage(); } 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