oxjs/source/Ox.UI/js/Video/Ox.SmallVideoTimelineImage.js

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Ox.SmallVideoTimelineImage = function(options, self) {
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self = self || {};
var that = Ox.Element({}, self)
.defaults({
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duration: 0,
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editing: false,
'in': 0,
out: 0,
results: [],
subtitles: [],
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timeline: '',
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width: 256,
type: 'player'
})
.options(options || {})
.css({
position: 'absolute',
width: self.options.width + 'px'
});
self.images = Ox.isString(self.options.timeline) ?
1 : Math.ceil(self.options.duration / 3600);
self.imageWidth = Ox.isString(self.options.timeline) ?
1920 : Math.round(self.options.duration);
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self.height = self.options.type == 'player' ? 16 : 24;
self.imageHeight = self.options.type == 'player' ? 16 : 18;
self.imageTop = self.options.type == 'player' ? 0 : 3;
self.timelineTop = self.options.type == 'player' ? 0 : 4;
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that.css({
height: self.height + 'px'
});
if (Ox.isString(self.options.timeline)) {
self.$timeline = $('<img>')
.attr({
src: self.options.timeline
})
.css({
position: 'absolute',
top: self.timelineTop + 'px',
width: self.options.width + 'px',
height: '16px'
})
.appendTo(that.$element);
} else {
Ox.loop(self.images, function(i) {
$('<img>')
.attr({
src: self.options.timeline(i)
})
.css({
position: 'absolute',
left: (i * 3600) + 'px',
top: self.timelineTop + 'px',
width: (i == self.images - 1 ? self.imageWidth % 3600 : 3600) + 'px',
height: '16px'
})
.appendTo(that.$element);
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});
}
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self.$subtitles = $('<img>')
.attr({
src: getImageURL('subtitles')
})
.css({
position: 'absolute',
top: self.imageTop + 'px',
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width: self.options.width + 'px',
height: self.imageHeight + 'px'
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})
.appendTo(that.$element);
self.$results = $('<img>')
.attr({
src: getImageURL('results')
})
.css({
position: 'absolute',
top: self.imageTop + 'px',
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width: self.options.width + 'px',
height: self.imageHeight + 'px'
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})
.appendTo(that.$element);
self.$selection = $('<img>')
.attr({
src: getImageURL('selection')
})
.css({
position: 'absolute',
top: self.imageTop + 'px',
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width: self.options.width + 'px',
height: self.imageHeight + 'px'
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})
.appendTo(that.$element);
function getImageURL(image, callback) {
var width = image == 'results' || image == 'selection' ?
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self.options.width : self.imageWidth,
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height = self.imageHeight,
canvas = $('<canvas>')
.attr({
width: width,
height: height
})[0],
context = canvas.getContext('2d'),
imageData = context.createImageData(width, height),
data = imageData.data;
if (image == 'results') {
var top = 0,
bottom = height;
self.options.results.forEach(function(result) {
var left = Math.round(
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result['in'] / self.options.duration * width
),
right = Math.round(
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result.out / self.options.duration * width
) + 1;
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Ox.loop(left, right, function(x) {
Ox.loop(top, bottom, function(y) {
var color = self.options.type == 'player' ?
[255, 255, 0, 128] :
(y == top || y == bottom - 1) ?
[255, 255, 0, 255] : [255, 255, 0, 64],
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index = x * 4 + y * 4 * width;
data[index] = color[0];
data[index + 1] = color[1];
data[index + 2] = color[2];
data[index + 3] = color[3];
});
});
});
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} else if (image == 'selection' && self.options.out > self.options['in']) {
var left = Math.round(
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self.options['in'] / self.options.duration * width
),
right = Math.round(
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self.options.out / self.options.duration * width
) + 1,
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top = 0,
bottom = height,
rgb = self.options.editing ? [128, 255, 255] : [255, 255, 255];
Ox.loop(left, right, function(x) {
Ox.loop(top, bottom, function(y) {
var color = self.options.type == 'player' ?
[rgb[0], rgb[1], rgb[2], 128] :
[rgb[0], rgb[1], rgb[2], (y == top || y == bottom - 1) ? 255 : 64],
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index = x * 4 + y * 4 * width;
data[index] = color[0];
data[index + 1] = color[1];
data[index + 2] = color[2];
data[index + 3] = color[3];
});
});
} else if (image == 'subtitles') {
var bottom = self.options.type == 'player' ? 14 : 15;
self.options.subtitles.forEach(function(subtitle) {
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var left = Math.round(
subtitle['in'] / self.options.duration * self.imageWidth
),
right = Math.round(
subtitle.out / self.options.duration * self.imageWidth
) + 1,
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top = bottom - subtitle.text.split('\n').length - 3;
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Ox.loop(left, right, function(x) {
Ox.loop(top, bottom, function(y) {
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var color = y == top ? [0, 0, 0, 0] :
(y == top + 1 || y == bottom - 1) ?
[0, 0, 0, 128] : [255, 255, 255, 128],
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index = x * 4 + y * 4 * width;
data[index] = color[0];
data[index + 1] = color[1];
data[index + 2] = color[2];
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data[index + 3] = color[3];
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});
});
});
}
context.putImageData(imageData, 0, 0);
return canvas.toDataURL();
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}
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function getPosition() {
}
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self.setOption = function(key, value) {
if (key == 'in' || key == 'out') {
self.$selection.attr({
src: getImageURL('selection')
});
} else if (key == 'results') {
self.$results.attr({
src: getImageURL('results')
});
} else if (key == 'selection') {
self.$selection.attr({
src: getImageURL('selection')
});
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} else if (key == 'subtitles') {
self.$subtitles.attr({
src: getImageURL('subtitles')
});
} else if (key == 'width') {
that.css({width: value + 'px'});
self.$results
.attr({src: getImageURL('results')})
.css({width: value + 'px'});
self.$selection
.attr({src: getImageURL('selection')})
.css({width: value + 'px'});
self.$subtitles.css({width: value + 'px'});
self.$timeline.css({width: value + 'px'});
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}
};
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return that;
}