mdb-ui-kit/scripts/ripples.js
2014-12-18 12:54:59 +01:00

168 lines
5.1 KiB
JavaScript

/* Copyright 2014+, Federico Zivolo, LICENSE at https://github.com/FezVrasta/bootstrap-material-design/blob/master/LICENSE.md */
/* globals jQuery, navigator */
(function($) {
// Detect if the browser supports transitions
$.support.transition = (function(){
var thisBody = document.body || document.documentElement,
thisStyle = thisBody.style,
support = (
thisStyle.transition !== undefined ||
thisStyle.WebkitTransition !== undefined ||
thisStyle.MozTransition !== undefined ||
thisStyle.MsTransition !== undefined ||
thisStyle.OTransition !== undefined
);
return support;
})();
$.ripples = function(options) {
// Default options
var defaultOptions = {
"target": ".btn:not(.btn-link), .card-image, .navbar a:not(.withoutripple), .nav-tabs a:not(.withoutripple), .withripple"
};
function isTouch() {
return /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent);
}
// Fade out the ripple and then destroy it
function rippleOut(ripple) {
// Unbind events from ripple
ripple.off();
// Start the out animation
if ($.support.transition) {
ripple.addClass("ripple-out");
} else {
ripple.animate({
"opacity": 0
}, 100, function() {
ripple.trigger("transitionend");
});
}
// This function is called when the transition "out" ends
ripple.on("transitionend webkitTransitionEnd oTransitionEnd MSTransitionEnd", function(){
ripple.remove();
});
}
// Apply custom options
options = $.extend(defaultOptions, options);
$(document)
.on("mousedown touchstart", options.target, function(e) {
if (isTouch() && e.type == "mousedown") {
return false;
}
var element = $(this);
// If the ripple wrapper does not exists, create it
if (!$(this).find(".ripple-wrapper").length) {
$(this).append("<div class=ripple-wrapper></div>");
}
var wrapper = $(this).find(".ripple-wrapper");
var wrapperOffset = wrapper.offset(),
relX,
relY;
if (!isTouch()) {
// Get the mouse position relative to the ripple wrapper
relX = e.pageX - wrapperOffset.left;
relY = e.pageY - wrapperOffset.top;
} else {
// Make sure the user is using only one finger and then get the touch position relative to the ripple wrapper
e = e.originalEvent;
if (e.touches.length === 1) {
relX = e.touches[0].pageX - wrapperOffset.left;
relY = e.touches[0].pageY - wrapperOffset.top;
} else {
return;
}
}
// Meet the new ripple
var ripple = $("<div></div>");
// Add to it the ripple class
ripple.addClass("ripple");
// Position it in the right place
ripple.css({"left": relX, "top": relY});
// Set the background color of the ripple
ripple.css({"background-color": ($(this).data("ripple-color")) ? $(this).data("ripple-color") : window.getComputedStyle($(this)[0]).color});
// Spawn it
wrapper.append(ripple);
// Make sure the ripple has the styles applied (ugly hack but it works)
(function() { return window.getComputedStyle(ripple[0]).opacity; })();
// Set the new size
var size = (Math.max($(this).outerWidth(), $(this).outerHeight()) / ripple.outerWidth()) * 2.5;
// Decide if use CSS transitions or jQuery transitions
if ($.support.transition) {
// Start the transition
ripple.css({
"-ms-transform": "scale(" + size + ")",
"-moz-transform": "scale(" + size + ")",
"-webkit-transform": "scale(" + size + ")",
"transform": "scale(" + size + ")"
});
ripple.addClass("ripple-on");
ripple.data("animating", "on");
ripple.data("mousedown", "on");
} else {
// Start the transition
ripple.animate({
"width": Math.max($(this).outerWidth(), $(this).outerHeight()) * 2,
"height": Math.max($(this).outerWidth(), $(this).outerHeight()) * 2,
"margin-left": Math.max($(this).outerWidth(), $(this).outerHeight()) * -1,
"margin-top": Math.max($(this).outerWidth(), $(this).outerHeight()) * -1,
"opacity": 0.2
}, 500, function() {
ripple.trigger("transitionend");
});
}
// This function is called when the transition "on" ends
setTimeout(function() {
ripple.data("animating", "off");
if (ripple.data("mousedown") == "off") {
rippleOut(ripple);
}
}, 500);
// On mouseup or on mouseleave, set the mousedown flag to "off" and try to destroy the ripple
element.on("mouseup mouseleave touchend", function() {
ripple.data("mousedown", "off");
// If the transition "on" is finished then we can destroy the ripple with transition "out"
if (ripple.data("animating") == "off") {
rippleOut(ripple);
}
});
});
};
$.fn.ripples = function() {
$.ripples({"target": $(this)});
};
})(jQuery);