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Adds generic preview.
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Lars Jung
parent
0acd3efaad
commit
8dbd7dd2a7
247
src/_h5ai/client/js/inc/ext/preview.js
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247
src/_h5ai/client/js/inc/ext/preview.js
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modulejs.define('ext/preview', ['_', '$', 'core/settings', 'core/resource', 'core/store', 'core/event', 'core/location'], function (_, $, allsettings, resource, store, event, location) {
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var settings = _.extend({
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enabled: true
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}, allsettings['preview']),
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template = '<div id="pv-overlay" class="noSelection">' +
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'<div id="pv-content">' +
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'<img id="pv-image"/>' +
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'</div>' +
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'<div id="pv-spinner">' +
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'<img src="' + resource.image('spinner') + '"/>' +
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'</div>' +
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'<div id="pv-close"/>' +
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'<div id="pv-prev"/>' +
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'<div id="pv-next"/>' +
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'<div id="pv-bottombar" class="clearfix">' +
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'<ul id="pv-buttons">' +
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'<li id="pv-bar-close" class="bar-right bar-button"><img src="' + resource.image('preview/close') + '"/></li>' +
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'<li id="pv-bar-original" class="bar-right"><a class="bar-button" target="_blank"><img src="' + resource.image('preview/raw') + '"/></a></li>' +
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'<li id="pv-bar-fullscreen" class="bar-right bar-button"><img src="' + resource.image('preview/fullscreen') + '"/></li>' +
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'<li id="pv-bar-next" class="bar-right bar-button"><img src="' + resource.image('preview/next') + '"/></li>' +
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'<li id="pv-bar-idx" class="bar-right bar-label"/>' +
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'<li id="pv-bar-prev" class="bar-right bar-button"><img src="' + resource.image('preview/prev') + '"/></li>' +
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'</ul>' +
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'</div>' +
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'</div>',
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storekey = 'preview.isFullscreen',
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currentEntries = [],
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currentIdx = 0,
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isFullscreen = store.get(storekey) || false,
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adjustSize = function () {
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var rect = $(window).fracs('viewport'),
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$container = $('#pv-content'),
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$spinner = $('#pv-spinner'),
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$spinnerimg = $spinner.find('img').width(100).height(100),
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$img = $('#pv-image'),
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margin = isFullscreen ? 0 : 20,
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barheight = isFullscreen ? 0 : 31;
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$container.add($spinner).css({
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width: rect.width - 2 * margin,
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height: rect.height - 2 * margin - barheight,
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left: margin,
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top: margin
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});
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var lr = ($container.width() - $img.width()) / 2,
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tb = ($container.height() - $img.height()) / 2;
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$img.css({
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margin: '' + tb + 'px ' + lr + 'px'
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});
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$spinnerimg.css({
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margin: '' + (($spinner.height() - $spinnerimg.height()) / 2) + 'px ' + (($spinner.width() - $spinnerimg.height()) / 2) + 'px'
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});
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rect = $img.fracs('rect');
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if (!rect) {
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return;
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}
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rect = rect.relativeTo($('#pv-overlay').fracs('rect'));
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$('#pv-prev').css({
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left: rect.left,
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top: rect.top,
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width: rect.width / 2,
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height: rect.height
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});
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$('#pv-next').css({
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left: rect.left + rect.width / 2,
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top: rect.top,
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width: rect.width / 2,
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height: rect.height
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});
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$('#pv-bar-percent').text('' + (100 * $img.width() / $img[0].naturalWidth).toFixed(0) + '%');
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if (isFullscreen) {
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$('#pv-overlay').addClass('fullscreen');
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$('#pv-bar-fullscreen').find('img').attr('src', resource.image('preview/no-fullscreen'));
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$('#pv-bottombar').fadeOut(400);
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} else {
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$('#pv-overlay').removeClass('fullscreen');
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$('#pv-bar-fullscreen').find('img').attr('src', resource.image('preview/fullscreen'));
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$('#pv-bottombar').fadeIn(200);
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}
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},
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onEnter = function (items, idx) {
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$(window).on('keydown', onKeydown);
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$('#pv-image').hide();
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$('#pv-overlay').stop(true, true).fadeIn(200);
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currentEntries = items;
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adjustSize();
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},
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onNext = function () {
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if (_.isFunction(onIndexChange)) {
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onIndexChange(1);
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}
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},
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onPrevious = function () {
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if (_.isFunction(onIndexChange)) {
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onIndexChange(-1);
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}
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},
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onExit = function () {
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$(window).off('keydown', onKeydown);
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$('#pv-overlay').stop(true, true).fadeOut(200);
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},
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onFullscreen = function () {
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isFullscreen = !isFullscreen;
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store.put(storekey, isFullscreen);
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adjustSize();
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},
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onKeydown = function (event) {
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var key = event.which;
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if (key === 27) { // esc
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event.preventDefault();
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event.stopImmediatePropagation();
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onExit();
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} else if (key === 8 || key === 37 || key === 40) { // backspace, left, down
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event.preventDefault();
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event.stopImmediatePropagation();
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onPrevious();
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} else if (key === 13 || key === 32 || key === 38 || key === 39) { // enter, space, up, right
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event.preventDefault();
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event.stopImmediatePropagation();
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onNext();
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} else if (key === 70) { // f
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event.preventDefault();
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event.stopImmediatePropagation();
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onFullscreen();
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}
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},
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setIndex = function (idx, total) {
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if (_.isNumber(idx)) {
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$('#pv-bar-idx').show().text('' + idx + (_.isNumber(total) ? '/' + total : ''));
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} else {
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$('#pv-bar-idx').hide();
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}
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},
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setLabels = function (labels) {
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$('#pv-buttons .bar-left').remove();
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_.each(labels, function (label) {
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$('<li />')
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.addClass('bar-left bar-label')
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.text(label)
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.appendTo('#pv-buttons');
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});
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},
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onIndexChange = null,
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setOnIndexChange = function (fn) {
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onIndexChange = fn;
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},
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init = function () {
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if (!settings.enabled) {
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return;
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}
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$(template).appendTo('body');
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$('#pv-bar-prev, #pv-prev').on('click', onPrevious);
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$('#pv-bar-next, #pv-next').on('click', onNext);
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$('#pv-bar-close, #pv-close').on('click', onExit);
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$('#pv-bar-fullscreen').on('click', onFullscreen);
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$('#pv-prev')
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.on('mouseenter', function () {
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$('#pv-bar-prev').addClass('hover');
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})
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.on('mouseleave', function () {
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$('#pv-bar-prev').removeClass('hover');
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});
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$('#pv-next')
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.on('mouseenter', function () {
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$('#pv-bar-next').addClass('hover');
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})
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.on('mouseleave', function () {
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$('#pv-bar-next').removeClass('hover');
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});
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$('#pv-close')
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.on('mouseenter', function () {
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$('#pv-bar-close').addClass('hover');
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})
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.on('mouseleave', function () {
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$('#pv-bar-close').removeClass('hover');
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});
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$('#pv-overlay')
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.on('keydown', onKeydown)
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.on('mousemove', function (event) {
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if (isFullscreen) {
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var rect = $('#pv-overlay').fracs('rect');
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if (rect.bottom - event.pageY < 64) {
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$('#pv-bottombar').fadeIn(200);
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} else {
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$('#pv-bottombar').fadeOut(400);
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}
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}
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})
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.on('click mousedown mousemove keydown keypress', function (event) {
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event.stopImmediatePropagation();
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});
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$(window).on('resize load', adjustSize);
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};
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init();
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return {
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setIndex: setIndex,
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setLabels: setLabels,
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setOnIndexChange: setOnIndexChange
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};
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});
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