mcopy/app/lib/ui/filmout.js

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'use strict';
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/**
* Determine the greatest common denominator
*/
function gcd(a, b) {
if (b === 0)
return a;
return gcd(b, a % b);
}
/**
* Reduce a numerator and denominator to it's smallest, integer ratio using Euclid's Algorithm
*/
function reduceRatio(numerator, denominator) {
// from: http://pages.pacificcoast.net/~cazelais/euclid.html
let temp;
let divisor;
if (!isInteger(numerator) || !isInteger(denominator))
return '? : ?';
if (numerator === denominator)
return '1 : 1';
// make sure numerator is always the larger number
if (+numerator < +denominator) {
temp = numerator;
numerator = denominator;
denominator = temp;
}
divisor = gcd(+numerator, +denominator);
return 'undefined' === typeof temp ? (numerator / divisor) + ' : ' + (denominator / divisor) : (denominator / divisor) + ' : ' + (numerator / divisor);
}
/**
* Determine whether a value is an integer (ie. only numbers)
*/
function isInteger(value) {
return /^[0-9]+$/.test(value);
}
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let filmout;
class FilmOut {
constructor() {
this.id = 'filmout';
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this.extensions = ['.mpg', '.mpeg', '.mov', '.mkv', '.avi', '.mp4',
'.gif',
'.tif', '.tiff', '.png', '.jpg', '.jpeg', '.bmp'];
this.displays = [];
this.state = {
frame: 0,
display: null
};
}
init() {
this.listen();
}
listen() {
ipcRenderer.on(this.id, this.onFilmout.bind(this));
ipcRenderer.on('system', this.onSystem.bind(this));
ipcRenderer.on('preview_frame', this.onFrame.bind(this));
}
onSystem(evt, args) {
let option;
for (let display of args.displays) {
this.displays.push(display);
option = $('<option>');
option.val(display.id);
option.text(display.name);
if (display.primary) {
this.setDisplay(display.id);
}
$('#filmout_displays').append(option);
}
if (args.displays.length > 1) {
$('#filmout_displays').on('change', this.onChange.bind(this));
}
$('#filmout_position').on('change', this.previewFrame.bind(this));
}
onChange() {
const val = $('#filmout_displays').val();
this.setDisplay(val);
}
setDisplay(id) {
const maxW = 800;
const maxH = 360;
const display = this.displays.find((elem) => {
if (elem.id == id)
return true;
});
let scale = display.height / maxH;
const w = display.width / scale;
const elem = $('#filmout_monitor');
const aspect = reduceRatio(display.width, display.height);
let h;
let top;
if (w > maxW) {
scale = display.width / maxW;
h = display.height / scale;
top = Math.floor((maxH - h) / 2);
elem.height(h);
elem.width(maxW - 4);
elem.css('top', `${top}px`);
}
else {
elem.width(w);
elem.height(maxH - 4);
elem.css('top', `0px`);
}
elem.addClass('on');
$('#filmout_stats_monitor_size').text(`${display.width} x ${display.height}`);
$('#filmout_stats_monitor_aspect').text(`${aspect}`);
$('#filmout_stats_monitor_scale').text(`${parseFloat(display.scale).toFixed(1)} scale factor`);
//console.dir(display);
this.state.display = id;
ipcRenderer.send('display', { display: id });
}
selectFile() {
const elem = $('#digital');
dialog.showOpenDialog({
title: `Select video or image sequence`,
properties: [`openFile`],
defaultPath: 'c:/',
filters: [
{
name: 'All Files',
extensions: ['*']
},
]
}, (files) => {
if (!files)
return false;
let valid = false;
let pathStr = files[0];
let displayName;
let ext;
if (pathStr && pathStr !== '') {
ext = path.extname(pathStr.toLowerCase());
valid = this.extensions.indexOf(ext) === -1 ? false : true;
if (!valid) {
return false;
}
log.info(`Selected video ${pathStr.split('/').pop()}`, 'DIGITAL', true);
elem.attr('data-file', pathStr);
displayName = pathStr.split('/').pop();
elem.val(displayName);
$('#filmout_file').val(displayName);
}
});
}
useFile() {
const elem = $('#digital');
const path = elem.attr('data-file');
const fileName = elem.val();
let proceed = false;
let obj = {
path,
fileName
};
if (path && path !== '') {
proceed = confirm(`Are you sure you want to use ${fileName}?`);
}
if (proceed) {
gui.overlay(true);
gui.spinner(true, `Getting info about ${fileName}`);
ipcRenderer.send('filmout', obj);
}
else {
$('#projector_type_digital').prop('checked', 'checked');
$('#digital').removeClass('active');
}
}
onFilmout(evt, args) {
let state;
let color = [255, 255, 255];
gui.spinner(false);
gui.overlay(false);
if (args.valid && args.valid === true) {
state = JSON.parse(args.state);
$('#digital').addClass('active');
$('#projector_type_digital').prop('checked', 'checked');
gui.notify('DEVICES', `Using video ${state.fileName}`);
seq.set(0, 'PF');
grid.state(0);
seq.set(1, 'CF');
seq.setLight(1, color);
grid.state(1);
if (light.disabled) {
light.enable();
}
this.state.frame = 0;
this.state.frames = state.frames;
this.state.width = state.info.width;
this.state.height = state.info.height;
this.state.name = state.fileName;
$('#seq_loop').val(`${state.frames - 1}`).trigger('change');
$('#filmout_stats_video_name').text(state.fileName);
$('#filmout_stats_video_size').text(`${state.info.width} x ${state.info.height}`);
$('#filmout_stats_video_frames').text(`${state.frames} frames`);
gui.updateState();
this.previewFrame();
}
else {
$('#projector_type_digital').prop('checked', 'checked');
$('#digital').removeClass('active');
}
}
previewFrame() {
const frameStr = $('#filmout_position').val();
const frame = parseInt(frameStr, 10);
this.state.frame = frame;
ipcRenderer.send('preview_frame', { frame });
}
onFrame(evt, args) {
const elem = $('#filmout');
elem[0].style.backgroundImage = `url('${args.path}')`;
elem.addClass('on');
}
advance() {
this.state.frame++;
if (this.state.frame >= this.state.frames) {
this.state.frame = 0;
}
$('#filmout_position').val(this.state.frame).trigger('change');
}
rewind() {
this.state.frame--;
if (this.state.frame < 0) {
this.state.frame = this.state.frames - 1;
}
$('#filmout_position').val(this.state.frame).trigger('change');
}
preview() {
const frame = this.state.frame;
ipcRenderer.send('preview', { frame });
}
focus() {
ipcRenderer.send('focus', { focus: true });
}
field() {
ipcRenderer.send('field', { field: true });
}
meter() {
ipcRenderer.send('meter', { meter: true });
}
close(evt, arg) {
}
}
filmout = new FilmOut();
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module.exports = filmout;