+++ /dev/null
-// © 2013 Benoît Pin MINES ParisTech
-
-var DDImageUploader;
-
-(function(){
-// nombre maximun d'image chargées en local
-var MAX_PREVIEW = 2;
-var isThumbnail = /.*\/getThumbnail$/;
-
-DDImageUploader = function(dropbox, uploadUrl, options) {
- DDFileUploaderBase.apply(this, [dropbox, uploadUrl]);
-
- this.existingSlides = this.indexExistingSlides();
- this.slideSize = options.slideSize || 222; // pixels
- this.progressBarMaxSize = this.slideSize - 22 || 200;
- this.thumbnailSize = options.thumbnailSize || 180;
- this.previewQueue = [];
- this._previewQueueRunning = false;
- this.previewsLoaded = 0;
-};
-
-copyPrototype(DDImageUploader, DDFileUploaderBase);
-
-DDImageUploader.prototype.indexExistingSlides = function() {
- var images = this.dropbox.getElementsByTagName('img');
- var i;
- var index = [];
- for (i=0 ; i < images.length ; i++) {
- if (isThumbnail.test(images[i].src)) {
- index[images[i].src] = images[i]; }
- }
- return index;
-};
-
-// Methods about upload.
-DDImageUploader.prototype.handleFiles = function(files) {
- var file, i, slide;
- for (i = 0; i < files.length; i++) {
- file = files[i];
- slide = this.createSlide(file);
- this.previewQueuePush(slide);
- this.uploadQueuePush(slide);
- }
-};
-
-DDImageUploader.prototype.beforeUpload = function(slide) {
- this.uploadedSlide = slide;
- this.previewImg = slide.img;
- this.progressBar = slide.progressBar;
- this.scrollToSlide(slide);
-};
-
-DDImageUploader.prototype.scrollToSlide = function(slide) {
- var slideHeight = slide.offsetHeight;
- var slideOffsetTop = slide.getElementsByClassName('slide')[0].offsetTop;
- var to = slideOffsetTop - getWindowHeight() + slideHeight;
- window.scroll(0, to);
-};
-
-DDImageUploader.prototype.uploadCompleteHandlerCB = function(req) {
- var slide = this.uploadedSlide;
- this.uploadedSlide.removeChild(slide.label);
- this.uploadedSlide.removeChild(slide.progressBar);
- var fragment = getCopyOfNode(req.responseXML.documentElement.firstChild);
- var img = fragment.getElementsByTagName('img')[0];
- if (req.status === 200) {
- // update
- var existing = this.existingSlides[img.src];
- if (existing) {
- existing.src = existing.src + '?' + Math.random().toString();
- }
- slide.img.src = '';
- slide.img.parentNode.removeChild(slide.img);
- slide.img = undefined;
- slide.parentNode.removeChild(slide);
- }
- else if(req.status === 201) {
- // creation
- img.onload = function(evt) {
- // accelerate GC before replacing
- slide.img.src = '';
- slide.img.parentNode.removeChild(slide.img);
- slide.img = undefined;
- slide.parentNode.replaceChild(fragment, slide);
- };
- }
- this.previewsLoaded--;
- this.previewQueueLoadNext();
-};
-
-DDImageUploader.prototype.progressHandlerCB = function(progress) {
- this.updateProgressBar(progress);
- var currentOpacity = this.previewImg.style.opacity;
- this.previewImg.style.opacity = Math.max(currentOpacity, progress);
-};
-
-// Methods about preview queue.
-DDImageUploader.prototype.previewQueuePush = function(slide) {
- this.previewQueue.push(slide);
- if (!this._previewQueueRunning) {
- this.startPreviewQueue();
- }
-};
-
-DDImageUploader.prototype.startPreviewQueue = function() {
- this._previewQueueRunning = true;
- this.previewQueueLoadNext();
-};
-
-DDImageUploader.prototype.previewQueueLoadNext = function() {
- if (this.previewQueue.length && this.previewsLoaded < MAX_PREVIEW) {
- var slide = this.previewQueue.shift();
- this.previewUploadedImage(slide);
- this.previewsLoaded++;
- }
- else {
- this._previewQueueRunning = false;
- }
-};
-
-// User interface
-DDImageUploader.prototype.createSlide = function(file) {
- var slide = document.createElement('span');
- slide.file = file;
-
- var a = document.createElement('a');
- a.href = '#';
- a.className = 'slide';
-
- var img = document.createElement('img');
- img.className = 'hidden';
- var size = this.thumbnailSize;
- var self = this;
- img.onload = function(evt) {
- if (img.width > img.height) { // landscape
- img.height = Math.round(size * img.height / img.width);
- img.width = size;
- }
- else {
- img.width = Math.round(size * img.width / img.height);
- img.height = size;
- }
- img.style.marginLeft = Math.floor((self.slideSize - img.width) / 2) + 'px';
- img.style.marginTop = Math.floor((self.slideSize - img.height) / 2) + 'px';
- img.style.opacity = 0.2;
- img.className = undefined;
- };
- a.appendChild(img);
- slide.img = img;
-
- var label = document.createElement('span');
- slide.label = label;
- label.className = 'label';
- label.innerHTML = file.name;
-
- var progressBar = document.createElement('span');
- progressBar.className = 'upload-progress';
- slide.progressBar = progressBar;
-
- slide.appendChild(a);
- slide.appendChild(progressBar);
- slide.appendChild(label);
- this.dropbox.appendChild(slide);
-
- return slide;
-};
-
-DDImageUploader.prototype.updateProgressBar = function(progress) {
- // 0 <= progress <= 1
- var size = this.progressBarMaxSize * progress;
- size = Math.round(size);
- this.progressBar.style.width = size + 'px';
-};
-
-DDImageUploader.prototype.previewUploadedImage = function(slide) {
- var reader = new FileReader();
- var size = this.thumbnailSize;
- var self = this;
-
- reader.onload = function(evt) {
- slide.img.src = evt.target.result;
- setTimeout(function(){self.previewQueueLoadNext();}, 500);
- };
- reader.readAsDataURL(slide.file);
-};
-
-}());
\ No newline at end of file
projects / Portfolio.git / blobdiff