mep-feature-progress.js
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(function($) {
// progress/loaded bar
$.extend(MediaElementPlayer.prototype, {
buildprogress: function(player, controls, layers, media) {
$('<div class="mejs-time-rail">'+
'<span class="mejs-time-total">'+
'<span class="mejs-time-buffering"></span>'+
'<span class="mejs-time-loaded"></span>'+
'<span class="mejs-time-current"></span>'+
'<span class="mejs-time-handle"></span>'+
'<span class="mejs-time-float">' +
'<span class="mejs-time-float-current">00:00</span>' +
'<span class="mejs-time-float-corner"></span>' +
'</span>'+
'</span>'+
'</div>')
.appendTo(controls);
controls.find('.mejs-time-buffering').hide();
var
t = this,
total = controls.find('.mejs-time-total'),
loaded = controls.find('.mejs-time-loaded'),
current = controls.find('.mejs-time-current'),
handle = controls.find('.mejs-time-handle'),
timefloat = controls.find('.mejs-time-float'),
timefloatcurrent = controls.find('.mejs-time-float-current'),
handleMouseMove = function (e) {
// mouse position relative to the object
var x = e.pageX,
offset = total.offset(),
width = total.outerWidth(true),
percentage = 0,
newTime = 0,
pos = 0;
if (media.duration) {
if (x < offset.left) {
x = offset.left;
} else if (x > width + offset.left) {
x = width + offset.left;
}
pos = x - offset.left;
percentage = (pos / width);
newTime = (percentage <= 0.02) ? 0 : percentage * media.duration;
// seek to where the mouse is
if (mouseIsDown && newTime !== media.currentTime) {
media.setCurrentTime(newTime);
}
// position floating time box
if (!mejs.MediaFeatures.hasTouch) {
timefloat.css('left', pos);
timefloatcurrent.html( mejs.Utility.secondsToTimeCode(newTime) );
timefloat.show();
}
}
},
mouseIsDown = false,
mouseIsOver = false;
// handle clicks
//controls.find('.mejs-time-rail').delegate('span', 'click', handleMouseMove);
total
.bind('mousedown', function (e) {
// only handle left clicks
if (e.which === 1) {
mouseIsDown = true;
handleMouseMove(e);
t.globalBind('mousemove.dur', function(e) {
handleMouseMove(e);
});
t.globalBind('mouseup.dur', function (e) {
mouseIsDown = false;
timefloat.hide();
t.globalUnbind('.dur');
});
return false;
}
})
.bind('mouseenter', function(e) {
mouseIsOver = true;
t.globalBind('mousemove.dur', function(e) {
handleMouseMove(e);
});
if (!mejs.MediaFeatures.hasTouch) {
timefloat.show();
}
})
.bind('mouseleave',function(e) {
mouseIsOver = false;
if (!mouseIsDown) {
t.globalUnbind('.dur');
timefloat.hide();
}
});
// loading
media.addEventListener('progress', function (e) {
player.setProgressRail(e);
player.setCurrentRail(e);
}, false);
// current time
media.addEventListener('timeupdate', function(e) {
player.setProgressRail(e);
player.setCurrentRail(e);
}, false);
// store for later use
t.loaded = loaded;
t.total = total;
t.current = current;
t.handle = handle;
},
setProgressRail: function(e) {
var
t = this,
target = (e != undefined) ? e.target : t.media,
percent = null;
// newest HTML5 spec has buffered array (FF4, Webkit)
if (target && target.buffered && target.buffered.length > 0 && target.buffered.end && target.duration) {
// TODO: account for a real array with multiple values (only Firefox 4 has this so far)
percent = target.buffered.end(0) / target.duration;
}
// Some browsers (e.g., FF3.6 and Safari 5) cannot calculate target.bufferered.end()
// to be anything other than 0. If the byte count is available we use this instead.
// Browsers that support the else if do not seem to have the bufferedBytes value and
// should skip to there. Tested in Safari 5, Webkit head, FF3.6, Chrome 6, IE 7/8.
else if (target && target.bytesTotal != undefined && target.bytesTotal > 0 && target.bufferedBytes != undefined) {
percent = target.bufferedBytes / target.bytesTotal;
}
// Firefox 3 with an Ogg file seems to go this way
else if (e && e.lengthComputable && e.total != 0) {
percent = e.loaded/e.total;
}
// finally update the progress bar
if (percent !== null) {
percent = Math.min(1, Math.max(0, percent));
// update loaded bar
if (t.loaded && t.total) {
t.loaded.width(t.total.width() * percent);
}
}
},
setCurrentRail: function() {
var t = this;
if (t.media.currentTime != undefined && t.media.duration) {
// update bar and handle
if (t.total && t.handle) {
var
newWidth = Math.round(t.total.width() * t.media.currentTime / t.media.duration),
handlePos = newWidth - Math.round(t.handle.outerWidth(true) / 2);
t.current.width(newWidth);
t.handle.css('left', handlePos);
}
}
}
});
})(mejs.$);