9b6374881d
A long due update, since this was merged in gjs and core shell. We no longer need to mess with __proto__ and prototype, and can use decent syntax for true object oriented programming. (This affects all except xrandr-indicator, since I want to port that to GDBus too, using the new bindings right from the start)
245 lines
8.1 KiB
JavaScript
245 lines
8.1 KiB
JavaScript
/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
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const Clutter = imports.gi.Clutter;
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const GTop = imports.gi.GTop;
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const Lang = imports.lang;
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const Mainloop = imports.mainloop;
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const St = imports.gi.St;
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const Shell = imports.gi.Shell;
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const Main = imports.ui.main;
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const INDICATOR_UPDATE_INTERVAL = 500;
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const INDICATOR_NUM_GRID_LINES = 3;
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let _cpuIndicator;
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let _memIndicator;
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let _box;
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const Indicator = new Lang.Class({
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Name: 'SystemMonitor.Indicator',
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_init: function() {
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this._initValues();
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this.drawing_area = new St.DrawingArea({ reactive: true });
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this.drawing_area.width = 100; this.drawing_area.height = 100;
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this.drawing_area.connect('repaint', Lang.bind(this, this._draw));
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this.drawing_area.connect('button-press-event', function() {
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let app = Shell.AppSystem.get_default().lookup_app('gnome-system-monitor.desktop');
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app.open_new_window(-1);
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});
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this.actor = new St.Bin({ style_class: "extension-systemMonitor-indicator-area",
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reactive: true});
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this.actor.add_actor(this.drawing_area);
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this._timeout = Mainloop.timeout_add(INDICATOR_UPDATE_INTERVAL, Lang.bind(this, function () {
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this._updateValues();
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this.drawing_area.queue_repaint();
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return true;
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}));
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},
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destroy: function() {
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Mainloop.source_remove(this._timeout);
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this.actor.destroy();
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},
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_initValues: function() {
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},
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_updateValues: function() {
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},
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_draw: function(area) {
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let [width, height] = area.get_surface_size();
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let themeNode = this.actor.get_theme_node();
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let cr = area.get_context();
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//draw the background grid
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let color = themeNode.get_color(this.gridColor);
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let gridOffset = Math.floor(height / (INDICATOR_NUM_GRID_LINES + 1));
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for (let i = 1; i <= INDICATOR_NUM_GRID_LINES; ++i) {
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cr.moveTo(0, i * gridOffset + .5);
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cr.lineTo(width, i * gridOffset + .5);
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}
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Clutter.cairo_set_source_color(cr, color);
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cr.setLineWidth(1);
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cr.setDash([4,1], 0);
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cr.stroke();
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//draw the foreground
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function makePath(values, reverse, nudge) {
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if (nudge == null) {
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nudge = 0;
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}
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//if we are going in reverse, we are completing the bottom of a chart, so use lineTo
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if (reverse) {
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cr.lineTo(values.length - 1, (1 - values[values.length - 1]) * height + nudge);
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for (let k = values.length - 2; k >= 0; --k) {
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cr.lineTo(k, (1 - values[k]) * height + nudge);
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}
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} else {
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cr.moveTo(0, (1 - values[0]) * height + nudge);
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for (let k = 1; k < values.length; ++k) {
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cr.lineTo(k, (1 - values[k]) * height + nudge);
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}
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}
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}
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let renderStats = this.renderStats;
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// Make sure we don't have more sample points than pixels
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renderStats.map(Lang.bind(this, function(k){
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let stat = this.stats[k];
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if (stat.values.length > width) {
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stat.values = stat.values.slice(stat.values.length - width, stat.values.length);
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}
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}));
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for (let i = 0; i < renderStats.length; ++i) {
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let stat = this.stats[renderStats[i]];
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// We outline at full opacity and fill with 40% opacity
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let outlineColor = themeNode.get_color(stat.color);
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let color = new Clutter.Color(outlineColor);
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color.alpha = color.alpha * .4;
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// Render the background between us and the next level
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makePath(stat.values, false);
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// If there is a process below us, render the cpu between us and it, otherwise,
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// render to the bottom of the chart
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if (i == renderStats.length - 1) {
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cr.lineTo(stat.values.length - 1, height);
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cr.lineTo(0, height);
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cr.closePath();
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} else {
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let nextStat = this.stats[renderStats[i+1]];
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makePath(nextStat.values, true);
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}
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cr.closePath()
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Clutter.cairo_set_source_color(cr, color);
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cr.fill();
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// Render the outline of this level
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makePath(stat.values, false, .5);
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Clutter.cairo_set_source_color(cr, outlineColor);
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cr.setLineWidth(1.0);
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cr.setDash([], 0);
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cr.stroke();
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}
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}
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});
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const CpuIndicator = new Lang.Class({
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Name: 'SystemMonitor.CpuIndicator',
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Extends: Indicator,
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_init: function() {
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this.parent();
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this.gridColor = '-grid-color';
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this.renderStats = [ 'cpu-user', 'cpu-sys', 'cpu-iowait' ];
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// Make sure renderStats is sorted as necessary for rendering
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let renderStatOrder = {'cpu-total': 0, 'cpu-user': 1, 'cpu-sys': 2, 'cpu-iowait': 3};
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this.renderStats = this.renderStats.sort(function(a,b) {
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return renderStatOrder[a] - renderStatOrder[b];
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});
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},
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_initValues: function() {
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this._prev = new GTop.glibtop_cpu;
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GTop.glibtop_get_cpu(this._prev);
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this.stats = {
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'cpu-user': {color: '-cpu-user-color', values: []},
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'cpu-sys': {color: '-cpu-sys-color', values: []},
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'cpu-iowait': {color: '-cpu-iowait-color', values: []},
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'cpu-total': {color: '-cpu-total-color', values: []}
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};
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},
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_updateValues: function() {
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let cpu = new GTop.glibtop_cpu;
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let t = 0.0;
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GTop.glibtop_get_cpu(cpu);
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let total = cpu.total - this._prev.total;
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let user = cpu.user - this._prev.user;
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let sys = cpu.sys - this._prev.sys;
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let iowait = cpu.iowait - this._prev.iowait;
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let idle = cpu.idle - this._prev.idle;
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t += iowait / total;
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this.stats['cpu-iowait'].values.push(t);
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t += sys / total;
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this.stats['cpu-sys'].values.push(t);
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t += user / total;
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this.stats['cpu-user'].values.push(t);
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this.stats['cpu-total'].values.push(1 - idle / total);
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this._prev = cpu;
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}
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});
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const MemoryIndicator = new Lang.Class({
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Name: 'SystemMonitor.MemoryIndicator',
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Extends: Indicator,
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_init: function() {
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this.parent();
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this.gridColor = '-grid-color';
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this.renderStats = [ 'mem-user', 'mem-other', 'mem-cached' ];
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// Make sure renderStats is sorted as necessary for rendering
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let renderStatOrder = { 'mem-cached': 0, 'mem-other': 1, 'mem-user': 2 };
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this.renderStats = this.renderStats.sort(function(a,b) {
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return renderStatOrder[a] - renderStatOrder[b];
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});
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},
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_initValues: function() {
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this.mem = new GTop.glibtop_mem;
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this.stats = {
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'mem-user': { color: "-mem-user-color", values: [] },
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'mem-other': { color: "-mem-other-color", values: [] },
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'mem-cached': { color: "-mem-cached-color", values: [] }
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};
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},
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_updateValues: function() {
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GTop.glibtop_get_mem(this.mem);
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let t = this.mem.user / this.mem.total;
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this.stats['mem-user'].values.push(t);
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t += (this.mem.used - this.mem.user - this.mem.cached) / this.mem.total;
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this.stats['mem-other'].values.push(t);
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t += this.mem.cached / this.mem.total;
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this.stats['mem-cached'].values.push(t);
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}
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});
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function init() {
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// nothing to do here
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}
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function enable() {
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_cpuIndicator = new CpuIndicator();
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_memIndicator = new MemoryIndicator();
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_box = new St.BoxLayout({ style_class: 'extension-systemMonitor-container' });
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_box.add(_cpuIndicator.actor);
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_box.add(_memIndicator.actor);
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Main.messageTray.actor.add_actor(_box);
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}
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function disable() {
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_cpuIndicator.destroy();
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_cpuIndicator = null;
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_memIndicator.destroy();
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_memIndicator = null;
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_box.destroy();
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}
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