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This commit is contained in:
Luke Pulverenti 2016-11-15 14:42:43 -05:00
parent 28dbf41487
commit 0dacc82ab7
20 changed files with 541 additions and 380 deletions
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167
dashboard-ui/bower_components/emby-webcomponents/images/imagehelper.js vendored
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@ -1,49 +1,12 @@
define(['visibleinviewport', 'imageFetcher', 'layoutManager', 'events', 'browser', 'dom', 'appSettings', 'require'], function (visibleinviewport, imageFetcher, layoutManager, events, browser, dom, appSettings, require) {
define(['lazyLoader', 'imageFetcher', 'layoutManager', 'browser', 'appSettings', 'require'], function (lazyLoader, imageFetcher, layoutManager, browser, appSettings, require) {
'use strict';
var thresholdX;
var thresholdY;
var requestIdleCallback = window.requestIdleCallback || function (fn) {
fn();
};
//var imagesWorker = new Worker(require.toUrl('.').split('?')[0] + '/imagesworker.js');
var supportsIntersectionObserver = function () {
if (window.IntersectionObserver) {
return true;
}
return false;
}();
function resetThresholds() {
var x = screen.availWidth;
var y = screen.availHeight;
if (browser.touch) {
x *= 1.5;
y *= 1.5;
}
thresholdX = x;
thresholdY = y;
}
if (!supportsIntersectionObserver) {
dom.addEventListener(window, "orientationchange", resetThresholds, { passive: true });
dom.addEventListener(window, 'resize', resetThresholds, { passive: true });
resetThresholds();
}
function isVisible(elem) {
return visibleinviewport(elem, true, thresholdX, thresholdY);
}
var wheelEvent = (document.implementation.hasFeature('Event.wheel', '3.0') ? 'wheel' : 'mousewheel');
var self = {};
@ -236,135 +199,9 @@ define(['visibleinviewport', 'imageFetcher', 'layoutManager', 'events', 'browser
elem.animate(keyframes, timing);
}
function cancelAll(tokens) {
for (var i = 0, length = tokens.length; i < length; i++) {
tokens[i] = true;
}
}
function unveilWithIntersection(images, root) {
var filledCount = 0;
var options = {};
//options.rootMargin = "300%";
var observer = new IntersectionObserver(function (entries) {
for (var j = 0, length2 = entries.length; j < length2; j++) {
var entry = entries[j];
var target = entry.target;
observer.unobserve(target);
fillImage(target);
filledCount++;
}
},
options
);
// Start observing an element
for (var i = 0, length = images.length; i < length; i++) {
observer.observe(images[i]);
}
}
function unveilElements(images, root) {
if (!images.length) {
return;
}
if (supportsIntersectionObserver) {
unveilWithIntersection(images, root);
return;
}
var filledImages = [];
var cancellationTokens = [];
function unveilInternal(tokenIndex) {
var anyFound = false;
var out = false;
// TODO: This out construct assumes left to right, top to bottom
for (var i = 0, length = images.length; i < length; i++) {
if (cancellationTokens[tokenIndex]) {
return;
}
if (filledImages[i]) {
continue;
}
var img = images[i];
if (!out && isVisible(img)) {
anyFound = true;
filledImages[i] = true;
fillImage(img);
} else {
if (anyFound) {
out = true;
}
}
}
if (!images.length) {
dom.removeEventListener(document, 'focus', unveil, {
capture: true,
passive: true
});
dom.removeEventListener(document, 'scroll', unveil, {
capture: true,
passive: true
});
dom.removeEventListener(document, wheelEvent, unveil, {
capture: true,
passive: true
});
dom.removeEventListener(window, 'resize', unveil, {
capture: true,
passive: true
});
}
}
function unveil() {
cancelAll(cancellationTokens);
var index = cancellationTokens.length;
cancellationTokens.length++;
setTimeout(function () {
unveilInternal(index);
}, 1);
}
dom.addEventListener(document, 'focus', unveil, {
capture: true,
passive: true
});
dom.addEventListener(document, 'scroll', unveil, {
capture: true,
passive: true
});
dom.addEventListener(document, wheelEvent, unveil, {
capture: true,
passive: true
});
dom.addEventListener(window, 'resize', unveil, {
capture: true,
passive: true
});
unveil();
}
function lazyChildren(elem) {
unveilElements(elem.getElementsByClassName('lazy'), elem);
lazyLoader.lazyChildren(elem, fillImage);
}
function getPrimaryImageAspectRatio(items) {