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angular.module('ionic.ion.headerShrink', [])
.directive('headerShrink', function ($document) {
var fadeAmt;
var shrink = function (header, content, amt, max) {
amt = Math.min(max, amt);
fadeAmt = 1 - amt / max;
ionic.requestAnimationFrame(function () {
header.style[ionic.CSS.TRANSFORM] = 'translate3d(0, -' + amt + 'px, 0)';
for (var i = 0, j = header.children.length; i < j; i++) {
header.children[i].style.opacity = fadeAmt;
}
});
};
return {
restrict: 'A',
link: function ($scope, $element, $attr) {
var starty = $scope.$eval($attr.headerShrink) || 0;
var shrinkAmt;
var amt;
var y = 0;
var prevY = 0;
var scrollDelay = 0.4;
var fadeAmt;
var headers = $document[0].body.querySelectorAll('.bar-header');
var headerHeight = headers[0].offsetHeight;
function onScroll(e) {
var scrollTop = e.detail.scrollTop;
if (scrollTop >= 0) {
y = Math.min(headerHeight / scrollDelay, Math.max(0, y + scrollTop - prevY));
} else {
y = 0;
}
//console.log(scrollTop);
ionic.requestAnimationFrame(function () {
fadeAmt = 1 - (y / headerHeight);
for (var k = 0, l = headers.length; k < l; k++) {
headers[k].style[ionic.CSS.TRANSFORM] = 'translate3d(0, ' + -y + 'px, 0)';
headers[k].style.opacity = fadeAmt;
}
});
prevY = scrollTop;
}
$element.bind('scroll', onScroll);
}
}
})
angular.module('app', ['ionic', 'ionic.ion.headerShrink'])
.config(function ($stateProvider, $urlRouterProvider) {
// Define our views
$stateProvider.state('home', {
url: "/home",
templateUrl: 'views/home.html'
// If you wanted some AngularJS controller behaviour...
// controller: "HomeCtrl as ctrl"
});
// Default view to show
$urlRouterProvider.otherwise('/home');
});
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