oxjs/source/Ox.UI/js/Video/LargeVideoTimeline.js
2014-02-04 09:32:50 +00:00

275 lines
8 KiB
JavaScript

'use strict';
/*@
Ox.LargeVideoTimeline <f> LargeTimeline Object
options <o> Options object
self <o> Shared private variable
([options[, self]]) -> <o:Ox.Element> LargeTimeline Object
position <!> position
@*/
Ox.LargeVideoTimeline = function(options, self) {
self = self || {};
var that = Ox.Element({}, self)
.defaults({
cuts: [],
disabled: false,
duration: 0,
find: '',
getImageURL: null,
'in': 0,
matches: [],
out: 0,
position: 0,
showInToOut: false,
subtitles: [],
type: '',
width: 0
})
.options(options || {})
.update({
find: setSubtitles,
'in': function() {
setPointMarker('in');
},
out: function() {
setPointMarker('out');
},
position: setPosition,
subtitles: setSubtitles,
type: setType,
width: setWidth
})
.addClass('OxLargeVideoTimeline OxMedia')
.on({
mouseleave: mouseleave,
mousemove: mousemove
});
if (!self.options.disabled) {
that.bindEvent({
anyclick: click,
dragstart: dragstart,
drag: drag,
dragend: dragend
});
}
self.$cuts = [];
self.$pointMarker = {};
self.$tiles = {};
self.$tooltip = Ox.Tooltip({animate: false});
self.center = Math.floor(self.options.width / 2);
self.fps = 25;
self.height = 64;
self.isAsync = self.options.getImageURL.length == 3;
self.tileWidth = 1500;
self.tiles = self.options.duration * self.fps / self.tileWidth;
self.$timeline = $('<div>')
.css({left: self.center + 'px'})
.appendTo(that);
setTimeout(setSubtitles);
if (self.options.showInToOut) {
if (self.options['in']) {
$('<div>')
.addClass('OxOverlay')
.css({
left: 0,
width: self.options['in'] * self.fps + 'px',
})
.appendTo(self.$timeline);
}
if (self.options.out) {
$('<div>')
.addClass('OxOverlay')
.css({
left: self.options.out * self.fps + 'px',
width: (self.options.duration - self.options.out) * self.fps + 'px',
})
.appendTo(self.$timeline);
}
}
setTimeout(function() {
self.options.cuts.forEach(function(v, i) {
self.$cuts[i] = $('<img>')
.addClass('OxCut')
.css({left: (v * self.fps) + 'px'})
.appendTo(self.$timeline);
});
// performs better
self.$timeline.find('.OxCut').attr({src: Ox.UI.getImageURL('markerCut')});
});
self.$markerPosition = $('<img>')
.addClass('OxMarkerPosition')
.attr({src: Ox.UI.getImageURL('markerPosition')})
.appendTo(that);
setMarker();
['in', 'out'].forEach(function(point) {
var titlecase = Ox.toTitleCase(point);
self.$pointMarker[point] = $('<img>')
.addClass('OxMarkerPoint' + titlecase)
.attr({src: Ox.UI.getImageURL('marker' + titlecase)})
.appendTo(self.$timeline);
setPointMarker(point);
});
setWidth();
setPosition();
function click(data) {
self.options.position = Ox.round(Ox.limit(
getPosition(data), 0, self.options.duration
), 3);
setPosition();
that.triggerEvent('position', {position: self.options.position});
}
function dragstart(data) {
Ox.$body.addClass('OxDragging');
self.drag = {x: data.clientX};
}
function drag(data) {
self.options.position = Ox.round(Ox.limit(
self.options.position + (self.drag.x - data.clientX) / self.fps,
0, self.options.duration
), 3);
self.drag.x = data.clientX;
setPosition();
that.triggerEvent('positioning', {position: self.options.position});
}
function dragend() {
Ox.$body.removeClass('OxDragging');
that.triggerEvent('position', {position: self.options.position});
}
function getImageURL(i, callback) {
if (!self.isAsync) {
callback(self.options.getImageURL(self.options.type, i));
} else {
self.options.getImageURL(self.options.type, i, callback);
}
}
function getPosition(e) {
return self.options.position + (
e.clientX - that.offset().left - self.center - 1
) / self.fps;
}
function mouseleave(e) {
self.clientX = 0;
self.clientY = 0;
self.$tooltip.hide();
}
function mousemove(e) {
self.clientX = e.clientX;
self.clientY = e.clientY;
updateTooltip();
}
function setMarker() {
self.$markerPosition.css({left: self.center + 'px'});
}
function setPointMarker(point) {
self.$pointMarker[point].css({
left: (self.options[point] * self.fps) + 'px'
});
}
function setPosition() {
self.tile = Math.floor(self.options.position * self.fps / self.tileWidth);
self.$timeline.css({
marginLeft: (-self.options.position * self.fps) + 'px'
});
Ox.loop(
Math.max(self.tile - 1, 0),
Math.min(self.tile + 2, self.tiles),
function(i) {
if (!self.$tiles[i]) {
if (self.isAsync) {
self.$tiles[i] = true;
}
getImageURL(i, function(url) {
self.$tiles[i] = $('<img>')
.attr({src: url})
.css({left: (i * self.tileWidth) + 'px'})
.appendTo(self.$timeline);
});
}
}
);
if (self.clientX && self.clientY) {
updateTooltip();
}
}
function setSubtitles() {
that.find('.OxSubtitle').remove();
self.$subtitles = [];
self.options.subtitles.forEach(function(subtitle, i) {
var found = self.options.find
&& subtitle.text.toLowerCase().indexOf(self.options.find.toLowerCase()) > -1;
self.$subtitles[i] = $('<div>')
.addClass('OxSubtitle' + (found ? ' OxHighlight' : ''))
.css({
left: Math.round(subtitle['in'] * self.fps) + 'px',
width: Math.round(((subtitle.out - subtitle['in']) * self.fps) - 2) + 'px'
})
.html(Ox.highlight(
subtitle.text, self.options.find, 'OxHighlight', true
))
.appendTo(self.$timeline);
});
}
function setType() {
Ox.forEach(self.$tiles, function($tile, i) {
getImageURL(i, function(url) {
$tile.attr({src: url});
});
});
}
function setWidth() {
self.center = Math.floor(self.options.width / 2);
that.css({
width: self.options.width + 'px'
});
self.$timeline.css({
left: self.center + 'px'
});
setMarker();
}
function triggerPositionEvent() {
that.triggerEvent('position', {position: self.options.position});
}
function updateTooltip() {
var position = getPosition(self);
if (position >= 0 && position <= self.options.duration) {
self.$tooltip
.options({
title: Ox.formatDuration(position, 3)
})
.show(self.clientX, self.clientY);
} else {
self.$tooltip.hide();
}
}
return that;
};