135 lines
4.1 KiB
JavaScript
135 lines
4.1 KiB
JavaScript
const Desklet = imports.ui.desklet;
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const Settings = imports.ui.settings;
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const Mainloop = imports.mainloop;
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const Lang = imports.lang;
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const Clutter = imports.gi.Clutter;
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const Cinnamon = imports.gi.Cinnamon;
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const Gio = imports.gi.Gio;
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const St = imports.gi.St;
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function MyDesklet(metadata, desklet_id) {
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this._init(metadata, desklet_id);
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}
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function main(metadata, desklet_id) {
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return new MyDesklet(metadata, desklet_id);
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}
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MyDesklet.prototype = {
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__proto__: Desklet.Desklet.prototype,
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_init: function(metadata, desklet_id) {
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Desklet.Desklet.prototype._init.call(this, metadata, desklet_id);
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// initialize settings
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this.settings = new Settings.DeskletSettings(this, this.metadata["uuid"], desklet_id);
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this.settings.bindProperty(Settings.BindingDirection.IN, "type", "type", this.on_setting_changed);
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this.settings.bindProperty(Settings.BindingDirection.IN, "refresh-interval", "refresh_interval", this.on_setting_changed);
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// initialize desklet GUI
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this.setupUI();
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},
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setupUI: function(){
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// initialize size
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this.canvas = new Clutter.Actor();
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this.canvas.remove_all_children();
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this.text1 = new St.Label();
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this.text2 = new St.Label();
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this.canvas.add_actor(this.text1);
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this.canvas.add_actor(this.text2);
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this.setContent(this.canvas);
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// set decoration settings
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// flag to indicate the first loop of the Desklet
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this.first_run = true;
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// update loop for Desklet
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this.update();
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},
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update: function() {
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// type of system variable to graph
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var type = this.type;
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var value = 0.0;
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// do the graph
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// text positions
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this.text1.set_position(null, null);
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this.text2.set_position(null, 50);
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// current values
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switch (type) {
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case "cpu":
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// CPU usage https://rosettacode.org/wiki/Linux_CPU_utilization
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var cpu_values = this.get_cpu_times();
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var cpu_tot = cpu_values[0];
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var cpu_idl = cpu_values[1];
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if (this.first_run){
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this.first_run = false;
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this.cpu_tot = cpu_tot;
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this.cpu_idl = cpu_idl;
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}
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else {
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var cpu_use = 100 * (1 - (cpu_idl - this.cpu_idl) / (cpu_tot - this.cpu_tot));
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this.cpu_tot = cpu_tot;
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this.cpu_idl = cpu_idl;
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this.text1.set_text(type);
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this.text2.set_text(Math.round(cpu_use).toString());
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// update in graph
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}
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break;
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case "ram":
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value = 12;
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this.text1.set_text(type);
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this.text2.set_text(value.toString());
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global.log("update ram");
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break;
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}
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// call this.update() every in refresh_interval seconds
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this.timeout = Mainloop.timeout_add_seconds(this.refresh_interval, Lang.bind(this, this.update));
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},
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on_setting_changed: function() {
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// settings changed; instant refresh
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Mainloop.source_remove(this.timeout);
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this.update();
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},
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on_desklet_removed: function() {
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Mainloop.source_remove(this.timeout);
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},
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get_cpu_times: function(){
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// launching sequential processes
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// https://stackoverflow.com/questions/61147229/multiple-arguments-in-gio-subprocess
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let subprocess = new Gio.Subprocess({
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argv: ['/bin/sh', '-c', 'cat /proc/stat | grep cpu -w'],
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flags: Gio.SubprocessFlags.STDOUT_PIPE,
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});
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subprocess.init(null);
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let [, out] = subprocess.communicate_utf8(null, null); // get full output from stdout
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let cpu_line = out.split(/\r?\n/)[0]; // get only one line
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let cpu_values = cpu_line.split(/\s+/); // split by space
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let cpu_idl = parseFloat(cpu_values[4]);
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let cpu_tot = 0;
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for (let i = 1; i<10; i++){
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cpu_tot += parseFloat(cpu_values[i])
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}
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return [cpu_tot, cpu_idl];
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}
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};
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