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Made stick book navigation recalc on window resize

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This commit is contained in:
Dan Brown 2016-06-25 15:46:31 +01:00
parent 9baa96d41c
commit 361ba8b244
1 changed files with 19 additions and 5 deletions
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24
resources/assets/js/pages/page-show.js
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@ -74,15 +74,15 @@ window.setupPageShow = module.exports = function (pageId) {
// Make the book-tree sidebar stick in view on scroll
var $window = $(window);
var $bookTree = $(".book-tree");
var $bookTreeParent = $bookTree.parent();
// Check the page is scrollable and the content is taller than the tree
var pageScrollable = ($(document).height() > $window.height()) && ($bookTree.height() < $('.page-content').height());
// Get current tree's width and header height
var headerHeight = $("#header").height() + $(".toolbar").height();
var isFixed = $window.scrollTop() > headerHeight;
var bookTreeWidth = $bookTree.width();
// Function to fix the tree as a sidebar
function stickTree() {
$bookTree.width(bookTreeWidth + 48 + 15);
$bookTree.width($bookTreeParent.width() + 15);
$bookTree.addClass("fixed");
isFixed = true;
}
@ -101,13 +101,27 @@ window.setupPageShow = module.exports = function (pageId) {
unstickTree();
}
}
// The event ran when the window scrolls
function windowScrollEvent() {
checkTreeStickiness(false);
}
// If the page is scrollable and the window is wide enough listen to scroll events
// and evaluate tree stickiness.
if (pageScrollable && $window.width() > 1000) {
$window.scroll(function() {
checkTreeStickiness(false);
});
$window.on('scroll', windowScrollEvent);
checkTreeStickiness(true);
}
// Handle window resizing and switch between desktop/mobile views
$window.on('resize', event => {
if (pageScrollable && $window.width() > 1000) {
$window.on('scroll', windowScrollEvent);
checkTreeStickiness(true);
} else {
$window.off('scroll', windowScrollEvent);
unstickTree();
}
});
};