mirror of
https://github.com/flynx/ImageGrid.git
synced 2025-10-31 03:10:07 +00:00
Alex A. Naanou
3f47b2486f
still need to replace ui button for zooming single image view still broken... Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
449 lines
10 KiB
JavaScript
Executable File
449 lines
10 KiB
JavaScript
Executable File
// XXX need a uniform way to address images (filename?)
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function setDefaultInitialState(){
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if($('.current.ribbon').length == 0){
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$('.ribbon').first().addClass('current')
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}
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if($('.current.image').length == 0){
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$('.current.ribbon').children('.image').first().addClass('current')
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}
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}
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function setupKeyboard(){
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$(document)
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.keydown(handleKeys)
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}
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function setupGestures(){
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$('.viewer')
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// XXX this is flaky and breaks some of my code...
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.swipe({
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swipeLeft: nextImage,
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swipeRight: prevImage,
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swipeUp: shiftImageUp,
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swipeDown: shiftImageDown,
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})
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/* XXX jquery.mobile handlers... (with this I'm getting way too much bling)
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.bind('swipeleft', function(e){
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nextImage()
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e.preventDefault()
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return false
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})
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.bind('swiperight', function(e){
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prevImage()
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e.preventDefault()
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return false
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})
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*/
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}
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function setupControlElements(){
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// images...
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$(".image").click(setCurrentImage)
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// buttons...
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$('.next-image').click(nextImage)
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$('.prev-image').click(prevImage)
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$('.demote').click(shiftImageUp)
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$('.promote').click(shiftImageDown)
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$('.toggle-wide').click(toggleWideView)
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// XXX need to update this to real zooming...
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$('.toggle-single').click(toggleRibbonView)
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}
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function loadImages(json){
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var images = json.images
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var ribbon = $('.ribbon').last()
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$('.image').remove()
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for(var i = 0; i < images.length; i++){
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$('<div class="image"></div>')
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.css({ 'background-image': 'url('+images[i]+')' })
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// set a unique id for each image...
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.attr({'id': i})
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.click(setCurrentImage)
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.appendTo(ribbon)
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}
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ribbon.children().first().click()
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}
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/*************************************************** Event Handlers **/
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function setCurrentImage(){
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// set classes...
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$('.current').removeClass('current')
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$(this)
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.addClass('current')
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.parents('.ribbon')
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.addClass('current')
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// position the field and ribbons...
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centerSquare()
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// center other ribbons relative to current image...
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// XXX
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}
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// XXX depricated...
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/*
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function handleImageClick(e) {
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var cur = $(this)
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// switch classes...
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cur.parents().siblings().children(".image").removeClass("current")
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cur.siblings(".image").removeClass("current")
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cur.siblings().children(".image").removeClass("current")
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cur.parents().siblings(".ribbon").removeClass("current")
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cur.addClass("current")
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cur.parents(".ribbon").addClass("current")
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var container = cur.parents('.container')
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var field = cur.parents(".field")
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var image_offset = cur.offset()
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var field_offset = field.offset()
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// center the current image...
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field.css({
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left: field_offset.left - image_offset.left + (container.innerWidth() - cur.innerWidth())/2,
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top: field_offset.top - image_offset.top + (container.innerHeight() - cur.innerHeight())/2
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})
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// XXX do I need this???
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e.preventDefault();
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}
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*/
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// key configuration...
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// XXX need to make this handle modifiers gracefully...
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var keys = {
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toggleHelpKeys: [72],
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toggleRibbonView: [70],
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closeKeys: [27, 88, 67],
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firstKeys: [36],
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lastKeys: [35],
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previousKeys: [37, 80, 188, 8],
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nextKeys: [39, 78, 190, 32],
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// these work with ctrl and shift modifiers...
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downKeys: [40],
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upKeys: [38],
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// these work with ctrl modifier...
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promoteKeys: [45],
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demoteKeys: [46],
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ignoreKeys: [16, 17, 18],
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helpShowOnUnknownKey: true
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}
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// XXX revise...
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function handleKeys(event){
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var code = event.keyCode, fn = $.inArray;
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var _ = (fn(code, keys.closeKeys) >= 0) ? function(){}()
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: (fn(code, keys.firstKeys) >= 0) ? firstImage()
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: (fn(code, keys.nextKeys) >= 0) ? nextImage()
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: (fn(code, keys.previousKeys) >= 0) ? prevImage()
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: (fn(code, keys.lastKeys) >= 0) ? lastImage()
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: (fn(code, keys.promoteKeys) >= 0) ? function(){
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if(event.ctrlKey){
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createRibbon('next')
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}
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shiftImageDown()
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}()
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: (fn(code, keys.demoteKeys) >= 0) ? function(){
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if(event.ctrlKey){
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createRibbon('prev')
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}
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shiftImageUp()
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}()
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: (fn(code, keys.downKeys) >= 0) ? function(){
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if(event.shiftKey){
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if(event.ctrlKey){
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createRibbon('next')
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}
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shiftImageDown()
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} else {
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focusBelowRibbon()
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}
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}()
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: (fn(code, keys.upKeys) >= 0) ? function(){
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if(event.shiftKey){
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if(event.ctrlKey){
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createRibbon('prev')
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}
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shiftImageUp()
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} else {
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focusAboveRibbon()
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}
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}()
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: (fn(code, keys.toggleRibbonView) >= 0) ? toggleRibbonView()
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: (fn(code, keys.ignoreKeys) >= 0) ? false
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// XXX
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: (keys.helpShowOnUnknownKey) ? function(){alert(code)}()
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: false;
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return false;
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}
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/************************************************************ Modes **/
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// mode switchers...
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function unsetViewerMode(mode){
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$('.' + mode)
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.removeClass(mode)
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// animation...
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.one("webkitTransitionEnd oTransitionEnd msTransitionEnd transitionend", function(){
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$('.current.image').click()
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return true
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});
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}
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function setViewerMode(mode){
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$('.viewer').not('.' + mode)
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.addClass(mode)
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// animation...
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.one("webkitTransitionEnd oTransitionEnd msTransitionEnd transitionend", function(){
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$('.current.image').click()
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return true
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});
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}
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// ribbon/single view modes...
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function toggleRibbonView(){
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if($('.single-image-mode').length > 0){
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unsetViewerMode('single-image-mode')
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} else {
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setViewerMode('single-image-mode')
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}
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}
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// wide view mode toggle...
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// XXX replace this with adequate zooming...
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// XXX need to reposition the whole thing correctly...
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function toggleWideView(){
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if($('.wide-view-mode').length > 0){
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unsetViewerMode('wide-view-mode')
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} else {
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unsetViewerMode('single-image-mode')
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setViewerMode('wide-view-mode')
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}
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}
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/******************************************************* Navigation **/
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// basic navigation...
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function firstImage(){
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$('.current.ribbon').children('.image').first().click()
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}
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function prevImage(){
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$('.current.image').prev('.image').click()
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}
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function nextImage(){
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$('.current.image').next('.image').click()
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}
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function lastImage(){
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$('.current.ribbon').children('.image').last().click()
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}
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// XXX for the above two functions to be stable we will need to jump up
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// to the next and down to the prev element...
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function focusRibbon(direction){
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var id = $('.current.image').attr('id')
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var prev = getImageBefore(id, $('.current.ribbon')[direction]('.ribbon'))
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if(prev){
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var next = prev.next()
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// NOTE: direction is accounted for to make the up/down shifts
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// symmetrical in the general case...
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if(next.length == 0 || direction == 'next'){
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prev.click()
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} else {
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next.click()
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}
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} else {
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$('.current.ribbon')[direction]('.ribbon').children('.image').first().click()
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}
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}
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function focusAboveRibbon(){
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focusRibbon('prev')
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}
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function focusBelowRibbon(){
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focusRibbon('next')
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}
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/********************************************************** Helpers **/
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// find an image object after which to position image ID...
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// used for two main tasks:
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// - positioning promoted/demoted images
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// - centering ribbons
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// returns:
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// - null - empty ribbon or no element greater id should be first
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// - element
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// XXX do we need to make ids numbers for this to work?
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// XXX might be better to make this binary search in very large sets of data
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function getImageBefore(id, ribbon){
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// walk the ribbon till we find two images one with an ID less and
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// another greater that id...
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id = parseInt(id)
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var images = ribbon.children('.image')
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var prev
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for(var i=0; i < images.length; i++){
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if(parseInt($(images[i]).attr('id')) > id){
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return prev
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}
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prev = $(images[i])
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}
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return prev
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}
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// center a ribbon horizontally...
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// if id exists in ribbon make it the center, else center between the
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// two images that id came from.
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function centerRibbonHorizontally(id, ribbon){
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// XXX
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}
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// center the ribbon in the middle of the container vertically...
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function centerRibbonVertically(ribbon){
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// XXX
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}
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/********************************************************** Actions **/
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// basic actions...
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// NOTE: below 'direction' is meant in the html sence, i.e. next/prev...
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// create ribbon above/below helpers...
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function createRibbon(direction){
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if(direction == 'next'){
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var insert = 'insertAfter'
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} else if(direction == 'prev') {
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var insert = 'insertBefore'
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} else {
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return false
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}
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var res = $('<div class="new-ribbon"></div>')[insert]('.current.ribbon')
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// HACK: without this, the class change below will not animate...
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.show()
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.addClass('ribbon')
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.removeClass('new-ribbon')
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// XXX need to account for increased top when creating a ribbon above...
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// i.e. shift the content upward...
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/*
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if(direction == 'prev'){
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$('.field').css({
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top: $('.field').position().top - $('.current.ribbon').outerHeight()
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})
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}*/
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return res
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}
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// XXX sort elements correctly...
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function mergeRibbons(direction){
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$('.current.ribbon')[direction]('.ribbon')
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.children()
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.detach()
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.insertAfter('.current.image')
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// animate...
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$('.current.ribbon')[direction]('.ribbon')
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.slideUp(function(){
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$(this).remove()
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$('.current.image').click()
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})
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}
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/*************************************************** Editor Actions **/
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// now the actual modifiers...
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function shiftImage(direction){
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if($('.current.ribbon')[direction]('.ribbon').length == 0){
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createRibbon(direction)
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}
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// get previous element after which we need to put the current...
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var prev_elem = getImageBefore(
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$('.current.image').attr('id'),
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$('.current.ribbon')[direction]('.ribbon'))
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// last image in ribbon, merge...
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if($('.current.ribbon').children('.image').length == 1){
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mergeRibbons(direction)
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} else {
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img = $('.current.image')
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if(img.next('.image').length == 0){
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prevImage()
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} else {
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nextImage()
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}
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// do the actual move...
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if(prev_elem){
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// insert element after current...
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img
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.detach()
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.insertAfter(prev_elem)
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} else {
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// empty ribbon or fisrt element...
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img
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.detach()
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.prependTo($('.current.ribbon')[direction]('.ribbon'))
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}
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}
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// XXX this has to know aout animations...
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$('.current.image').click()
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}
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function shiftImageDown(){
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return shiftImage('next')
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}
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// XXX this has problems, when creating a new ribbon this does not settle
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// into a correct spot...
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function shiftImageUp(){
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return shiftImage('prev')
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}
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/*********************************************************************/
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// vim:set ts=4 sw=4 nowrap :
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