'use strict';
/*@
Ox.SmallVideoTimelineImage <f> Small Video Timeline Image
options <o> Options
self <o> Shared private variable
([options[, self]]) -> <o:Ox.Element> Small Video Timeline Image
loaded <!> subtitle, result and selection overlays are loaded
@*/
Ox.SmallVideoTimelineImage = function(options, self) {
self = self || {};
var that = Ox.Element({}, self)
.defaults({
duration: 0,
imageURL: '',
invertHighlight: false,
'in': 0,
mode: 'player',
out: 0,
results: [],
showInToOut: false,
state: 'default',
subtitles: [],
type: '',
width: 256
})
.options(options || {})
.update({
imageURL: function() {
self.$timeline.attr({src: self.options.imageURL});
},
'in': function() {
self.$selection.attr({
src: getImageURL('selection')
});
},
out: function() {
self.$selection.attr({
src: getImageURL('selection')
});
},
results: function() {
self.$results.attr({
src: getImageURL('results')
});
},
selection: function() {
self.$selection.attr({
src: getImageURL('selection')
});
},
subtitles: function() {
self.$subtitles.attr({
src: getImageURL('subtitles')
});
},
state: function() {
self.$selection.attr({
src: getImageURL('selection')
});
},
width: function() {
var width = self.options.width;
that.css({width: width + 'px'});
self.$results
.attr({src: getImageURL('results')})
.css({width: width + 'px'});
self.$selection
.attr({src: getImageURL('selection')})
.css({width: width + 'px'});
self.$subtitles.css({width: width + 'px'});
self.$timeline.css({width: width + 'px'});
}
})
.css({
position: 'absolute',
width: self.options.width + 'px'
});
if (self.options.showInToOut) {
self.pixelsPerSecond = (
screen.width < 1024 ? 1024 : screen.width
) / self.options.duration;
}
self.images = Ox.isString(self.options.imageURL) ? 1
: Math.ceil(self.options.duration / 3600);
self.imageWidth = Ox.isString(self.options.imageURL) ? 1920
: self.options.showInToOut ? (
self.pixelsPerSecond <= 1
? Math.round(self.options.duration)
: Math.round(self.options.duration * 25)
)
: Math.round(self.options.duration);
self.height = self.options.mode == 'editor' ? 24 : 16;
self.imageHeight = self.options.mode == 'editor' ? 18 : 16;
self.imageTop = self.options.mode == 'editor' ? 3 : 0;
self.timelineTop = self.options.mode == 'editor' ? 4 : 0;
self.themeData = Ox.Theme.getThemeData();
that.css({height: self.height + 'px'});
if (Ox.isString(self.options.imageURL)) {
self.$timeline = $('<img>')
.attr({
src: self.options.imageURL
})
.css({
position: 'absolute',
top: self.timelineTop + 'px',
width: self.options.width + 'px',
height: '16px'
})
.appendTo(that);
} else if (self.options.showInToOut) {
self.$timeline = getClipTimeline()
.css({
position: 'absolute',
top: self.timelineTop + 'px',
width: self.options.width + 'px',
height: '16px'
})
.appendTo(that);
} else {
Ox.loop(self.images, function(i) {
$('<img>')
.attr({
src: self.options.imageURL(self.options.type, i)
})
.css({
position: 'absolute',
left: (i * 3600) + 'px',
top: self.timelineTop + 'px',
width: (i == self.images - 1 ? self.imageWidth % 3600 || 3600 : 3600) + 'px',
height: '16px'
})
.appendTo(that);
});
}
self.$subtitles = $('<img>');
self.$results = $('<img>');
self.$selection = $('<img>');
setTimeout(function() {
self.$subtitles
.attr({
src: getImageURL('subtitles')
})
.css({
position: 'absolute',
top: self.imageTop + 'px',
width: self.options.width + 'px',
height: self.imageHeight + 'px'
})
.appendTo(that);
self.$results
.attr({
src: getImageURL('results')
})
.css({
position: 'absolute',
top: self.imageTop + 'px',
width: self.options.width + 'px',
height: self.imageHeight + 'px'
})
.appendTo(that);
self.$selection
.attr({
src: getImageURL('selection')
})
.css({
position: 'absolute',
top: self.imageTop + 'px',
width: self.options.width + 'px',
height: self.imageHeight + 'px'
})
.appendTo(that);
that.triggerEvent('loaded');
});
function getClipTimeline() {
var $canvas, context, image,
firstTile, lastTile, tileHeight, tileOffset, tileWidth;
if (self.pixelsPerSecond <= 1) {
firstTile = Math.floor(self.options['in'] / 3600);
lastTile = Math.floor(self.options.out / 3600);
tileHeight = 16;
tileOffset = -Math.round(self.options['in'] % 3600);
tileWidth = 3600;
} else {
firstTile = Math.floor(self.options['in'] / 60);
lastTile = Math.floor(self.options.out / 60);
tileHeight = 64;
tileOffset = -Math.round(self.options['in'] % 60 * 25);
tileWidth = 1500;
}
$canvas = $('<canvas>').attr({
width: self.imageWidth,
height: tileHeight
});
context = $canvas[0].getContext('2d');
Ox.loop(firstTile, lastTile + 1, function(tileIndex) {
var $image = $('<img>')
.one({
load: function() {
context.drawImage(
$image[0],
tileOffset + (tileIndex - firstTile) * tileWidth,
0
);
}
})
.attr({
src: self.options.imageURL(tileHeight, tileIndex)
});
});
return $canvas;
}
function getImageURL(image, callback) {
var width = image == 'results' || image == 'selection'
? self.options.width : self.imageWidth,
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(
result['in'] / self.options.duration * width
),
right = Math.round(
result.out / self.options.duration * width
) + 1,
rgb = self.themeData.videoTimelineResultGradient;
Ox.loop(left, right, function(x) {
Ox.loop(top, bottom, function(y) {
var alpha = self.options.mode == 'editor'
&& (y == top || y == bottom - 1) ? 255 : 128,
color = rgb[[2, 3, 6].indexOf(x % 4 + y % 4) > -1 ? 0 : 1],
index = x * 4 + y * 4 * width;
data[index] = color[0];
data[index + 1] = color[1];
data[index + 2] = color[2];
data[index + 3] = alpha;
});
});
});
} else if (
image == 'selection'
&& self.options.out > self.options['in']
&& !self.options.showInToOut
) {
var left = Math.round(
self.options['in'] / self.options.duration * width
),
right = Math.round(
self.options.out / self.options.duration * width
) + 1,
spans = self.options.invertHighlight
? [{left: 0, right: left}, {left: right, right: width}]
: [{left: left, right: right}],
top = 0,
bottom = height,
rgb = self.themeData[
self.options.state == 'editable' ? 'videoTimelineEditableGradient'
: self.options.state == 'editing' ? 'videoTimelineEditingGradient'
: self.options.state == 'selected' ? 'videoTimelineSelectedGradient'
: 'videoTimelineDefaultGradient'
];
spans.forEach(function(span) {
Ox.loop(span.left, span.right, function(x) {
Ox.loop(top, bottom, function(y) {
var alpha = self.options.mode == 'editor'
&& (y == top || y == bottom - 1) ? 255 : 128,
color = rgb[[2, 3, 6].indexOf(x % 4 + y % 4) > -1 ? 0 : 1],
index = x * 4 + y * 4 * width;
data[index] = color[0];
data[index + 1] = color[1];
data[index + 2] = color[2];
data[index + 3] = alpha;
});
});
});
} else if (image == 'subtitles') {
var bottom = self.options.mode == 'editor' ? 15 : 14,
offset = self.options.showInToOut ? (
self.pixelsPerSecond <= 1
? -self.options['in']
: -self.options['in'] * 25
) : 0,
subtitles = self.options.showInToOut
? self.options.subtitles.filter(function(subtitle) {
return (
subtitle['in'] >= self.options['in']
&& subtitle['in'] <= self.options.out
) || (
subtitle.out >= self.options['in']
&& subtitle.out <= self.options.out
) || (
subtitle['in'] < self.options['in']
&& subtitle.out > self.options.out
)
})
: self.options.subtitles;
subtitles.forEach(function(subtitle) {
var left = Math.round(
subtitle['in'] / self.options.duration * self.imageWidth
) + offset,
right = Math.round(
subtitle.out / self.options.duration * self.imageWidth
) + offset + 1,
top = bottom - subtitle.text.split('\n').length - 2;
Ox.loop(left, right, function(x) {
Ox.loop(top, bottom, function(y) {
var alpha = 128,
color = (y == top || y == bottom - 1) ? [0, 0, 0] : [255, 255, 255],
index = x * 4 + y * 4 * width;
data[index] = color[0];
data[index + 1] = color[1];
data[index + 2] = color[2];
data[index + 3] = alpha;
});
});
});
}
context.putImageData(imageData, 0, 0);
return canvas.toDataURL();
}
return that;
};