/usr/share/doc/libfreetype6/js/freetype2.js is in libfreetype6-dev 2.8.1-2ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* freetype2.js
*
* auxiliary JavaScript functions for freetype.org
*
* written 2012 by Werner Lemberg
*/
// This code snippet needs `jquery'
// (http://code.jquery.com/jquery-1.8.3.js) and `jquery-resize'
// (http://github.com/cowboy/jquery-resize/raw/master/jquery.ba-resize.js)
// Add a bottom bar if the document length exceeds the window height.
// Additionally ensure that the TOC background reaches the bottom of the
// window.
function addBottomBar() {
var columnHeight = $('.colright').height();
var topBarHeight = $('#top').height();
var winHeight = $(window).height();
if (columnHeight + topBarHeight > winHeight) {
$('#TOC-bottom').css('height', columnHeight);
/* add bottom bar if it doesn't exist already */
if ($('#bottom').length == 0) {
$('body').append('<div class="bar" id="bottom"></div>');
}
}
else {
$('#TOC-bottom').css('height', winHeight - topBarHeight);
$('#bottom').remove();
}
}
// `Slightly' scroll the TOC so that its top moves up to the top of the
// screen if we scroll down. The function also assures that the bottom of
// the TOC doesn't cover the bottom bar (e.g., if the window height is very
// small).
function adjustTOCPosition() {
var docHeight = $(document).height();
var TOCHeight = $('#TOC').height();
var bottomBarHeight = $('#bottom').height();
var topBarHeight = $('#top').height();
var scrollTopPos = $(window).scrollTop();
var topBarBottomPos = 0 + topBarHeight;
var bottomBarTopPos = docHeight - bottomBarHeight;
if (scrollTopPos >= topBarBottomPos) {
$('#TOC').css('top', 0);
}
if (scrollTopPos < topBarBottomPos) {
$('#TOC').css('top', topBarBottomPos - scrollTopPos);
}
if (bottomBarTopPos - scrollTopPos < TOCHeight)
$('#TOC').css('top', bottomBarTopPos - scrollTopPos - TOCHeight);
}
// Hook functions into loading, resizing, and scrolling events.
$(window).load(function() {
addBottomBar();
adjustTOCPosition();
$(window).scroll(function() {
adjustTOCPosition();
});
$('#TOC-bottom').add(window).resize(function() {
addBottomBar();
});
});
/* end of freetype2.js */
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