252 lines
9 KiB
JavaScript
252 lines
9 KiB
JavaScript
'use strict';
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/*@
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Ox.SmallVideoTimelineImage <f> Small Video Timeline Image
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options <o> Options
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self <o> Shared private variable
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([options[, self]]) -> <o:Ox.Element> Small Video Timeline Image
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@*/
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Ox.SmallVideoTimelineImage = function(options, self) {
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self = self || {};
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var that = Ox.Element({}, self)
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.defaults({
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duration: 0,
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imageURL: '',
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invertHighlight: false,
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'in': 0,
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mode: 'player',
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out: 0,
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results: [],
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state: 'default',
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subtitles: [],
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type: '',
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width: 256
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})
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.options(options || {})
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.update({
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'in': function() {
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self.$selection.attr({
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src: getImageURL('selection')
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});
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},
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out: function() {
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self.$selection.attr({
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src: getImageURL('selection')
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});
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},
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results: function() {
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self.$results.attr({
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src: getImageURL('results')
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});
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},
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selection: function() {
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self.$selection.attr({
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src: getImageURL('selection')
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});
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},
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subtitles: function() {
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self.$subtitles.attr({
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src: getImageURL('subtitles')
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});
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},
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state: function() {
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self.$selection.attr({
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src: getImageURL('selection')
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});
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},
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width: function() {
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var width = self.options.width;
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that.css({width: width + 'px'});
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self.$results
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.attr({src: getImageURL('results')})
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.css({width: width + 'px'});
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self.$selection
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.attr({src: getImageURL('selection')})
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.css({width: width + 'px'});
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self.$subtitles.css({width: width + 'px'});
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self.$timeline.css({width: width + 'px'});
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}
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})
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.css({
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position: 'absolute',
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width: self.options.width + 'px'
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});
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self.images = Ox.isString(self.options.imageURL) ?
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1 : Math.ceil(self.options.duration / 3600);
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self.imageWidth = Ox.isString(self.options.imageURL) ?
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1920 : Math.round(self.options.duration);
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self.height = self.options.mode == 'player' ? 16 : 24;
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self.imageHeight = self.options.mode == 'player' ? 16 : 18;
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self.imageTop = self.options.mode == 'player' ? 0 : 3;
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self.timelineTop = self.options.mode == 'player' ? 0 : 4;
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self.themeData = Ox.Theme.getThemeData();
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that.css({
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height: self.height + 'px'
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});
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if (Ox.isString(self.options.imageURL)) {
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self.$timeline = $('<img>')
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.attr({
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src: self.options.imageURL
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})
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.css({
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position: 'absolute',
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top: self.timelineTop + 'px',
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width: self.options.width + 'px',
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height: '16px'
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})
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.appendTo(that);
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} else {
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Ox.loop(self.images, function(i) {
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$('<img>')
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.attr({
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src: self.options.imageURL(self.options.type, i)
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})
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.css({
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position: 'absolute',
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left: (i * 3600) + 'px',
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top: self.timelineTop + 'px',
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width: (i == self.images - 1 ? self.imageWidth % 3600 || 3600 : 3600) + 'px',
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height: '16px'
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})
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.appendTo(that);
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});
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}
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self.$subtitles = $('<img>')
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.attr({
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src: getImageURL('subtitles')
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})
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.css({
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position: 'absolute',
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top: self.imageTop + 'px',
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width: self.options.width + 'px',
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height: self.imageHeight + 'px'
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})
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.appendTo(that);
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self.$results = $('<img>')
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.attr({
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src: getImageURL('results')
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})
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.css({
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position: 'absolute',
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top: self.imageTop + 'px',
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width: self.options.width + 'px',
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height: self.imageHeight + 'px'
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})
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.appendTo(that);
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self.$selection = $('<img>')
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.attr({
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src: getImageURL('selection')
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})
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.css({
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position: 'absolute',
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top: self.imageTop + 'px',
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width: self.options.width + 'px',
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height: self.imageHeight + 'px'
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})
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.appendTo(that);
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function getImageURL(image, callback) {
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var width = image == 'results' || image == 'selection'
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? self.options.width : self.imageWidth,
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height = self.imageHeight,
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canvas = $('<canvas>')
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.attr({
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width: width,
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height: height
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})[0],
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context = canvas.getContext('2d'),
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imageData = context.createImageData(width, height),
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data = imageData.data;
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if (image == 'results') {
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var top = 0,
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bottom = height;
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self.options.results.forEach(function(result) {
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var left = Math.round(
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result['in'] / self.options.duration * width
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),
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right = Math.round(
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result.out / self.options.duration * width
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) + 1,
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rgb = self.themeData.videoTimelineResultGradient;
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Ox.loop(left, right, function(x) {
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Ox.loop(top, bottom, function(y) {
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var alpha = self.options.mode == 'editor'
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&& (y == top || y == bottom - 1) ? 255 : 128,
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color = rgb[[2, 3, 6].indexOf(x % 4 + y % 4) > -1 ? 0 : 1],
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index = x * 4 + y * 4 * width;
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data[index] = color[0];
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data[index + 1] = color[1];
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data[index + 2] = color[2];
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data[index + 3] = alpha;
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});
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});
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});
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} else if (image == 'selection' && self.options.out > self.options['in']) {
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var left = Math.round(
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self.options['in'] / self.options.duration * width
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),
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right = Math.round(
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self.options.out / self.options.duration * width
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) + 1,
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spans = self.options.invertHighlight
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? [{left: 0, right: left}, {left: right, right: width}]
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: [{left: left, right: right}],
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top = 0,
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bottom = height,
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rgb = self.themeData[
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self.options.state == 'editable' ? 'videoTimelineEditableGradient'
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: self.options.state == 'editing' ? 'videoTimelineEditingGradient'
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: self.options.state == 'selected' ? 'videoTimelineSelectedGradient'
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: 'videoTimelineDefaultGradient'
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];
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spans.forEach(function(span) {
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Ox.loop(span.left, span.right, function(x) {
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Ox.loop(top, bottom, function(y) {
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var alpha = self.options.mode == 'editor'
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&& (y == top || y == bottom - 1) ? 255 : 128,
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color = rgb[[2, 3, 6].indexOf(x % 4 + y % 4) > -1 ? 0 : 1],
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index = x * 4 + y * 4 * width;
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data[index] = color[0];
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data[index + 1] = color[1];
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data[index + 2] = color[2];
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data[index + 3] = alpha;
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});
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});
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});
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} else if (image == 'subtitles') {
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var bottom = self.options.mode == 'player' ? 14 : 15;
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self.options.subtitles.forEach(function(subtitle) {
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var left = Math.round(
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subtitle['in'] / self.options.duration * self.imageWidth
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),
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right = Math.round(
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subtitle.out / self.options.duration * self.imageWidth
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) + 1,
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top = bottom - subtitle.text.split('\n').length - 2;
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Ox.loop(left, right, function(x) {
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Ox.loop(top, bottom, function(y) {
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var alpha = 128,
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color = (y == top || y == bottom - 1) ? [0, 0, 0] : [255, 255, 255],
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index = x * 4 + y * 4 * width;
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data[index] = color[0];
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data[index + 1] = color[1];
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data[index + 2] = color[2];
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data[index + 3] = alpha;
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});
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});
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});
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}
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context.putImageData(imageData, 0, 0);
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return canvas.toDataURL();
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}
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return that;
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};
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