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// Copyright (C) 2026 Danilo M. <danix@danix.xyz>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2 as
// published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
import Quickshell
import Quickshell.Io
import Quickshell.Hyprland
import QtQuick
import "../.."
import "Mon.js" as M
// The connected monitors, read from hyprctl monitors -j into a draft. Apply
// runs each monitor's hl.monitor line through hyprctl eval, which applies it
// at once or refuses it (exit 7) and changes nothing; then Keep writes
// sections/monitors.lua, which this page owns whole, and Revert, or 15s with
// no answer, is hyprctl reload, which reapplies the untouched file. A
// setting that blanks a screen never reaches the file.
Module {
id: mm
name: "monitors"
label: "Monitors"
// nf-fa-desktop, present in Inconsolata Nerd Font.
icon: ""
settings: true
group: "Hyprland"
dirty: mm.changed
keywords: ["monitor", "display", "screen", "resolution", "refresh", "hz", "scale", "rotation", "vrr", "position", "layout"]
readonly property string file: (Quickshell.env("XDG_CONFIG_HOME") || Quickshell.env("HOME") + "/.config")
+ "/hypr/sections/monitors.lua"
// What hyprctl last reported, and the page's edit of it.
property var orig: []
property var draft: []
readonly property bool changed: JSON.stringify(mm.draft) !== JSON.stringify(mm.orig)
readonly property bool valid: mm.draft.every(d => /^\d+(\.\d+)?$/.test(d.scale) && +d.scale > 0)
// An Apply is live and waiting for Keep or Revert.
property bool pending: false
property int countdown: 0
property string error: ""
property string notice: ""
// The reload after a refusal must not replace the draft being fixed.
property bool skipRead: false
function refresh() { if (!mm.changed && !mm.pending) mm.read(); }
function read() {
mm.error = "";
readProc.running = false;
readProc.running = true;
}
property Process readProc: Process {
command: ["hyprctl", "monitors", "-j"]
stdout: StdioCollector {
onStreamFinished: {
let list;
try { list = JSON.parse(this.text); } catch (e) { return; }
mm.orig = list.map(M.draft);
mm.draft = list.map(M.draft);
}
}
}
// Keep's write, Revert's reload: both end in configreloaded.
property Connections reloads: Connections {
target: Hyprland
function onRawEvent(event) {
if (event.name !== "configreloaded" || mm.pending) return;
if (mm.skipRead) { mm.skipRead = false; return; }
mm.read();
}
}
// Changes one field of monitor i; a new array so bindings see it.
function set(i, key, value) {
const next = mm.draft.slice();
next[i] = Object.assign({}, next[i]);
next[i][key] = value;
mm.draft = next;
mm.notice = "";
}
function apply() {
mm.error = "";
mm.notice = "";
applyProc.command = ["sh", "-c", 'for l; do hyprctl eval "$l" || exit 7; done', "sh"]
.concat(mm.draft.map(M.lua));
applyProc.running = false;
applyProc.running = true;
}
property Process applyProc: Process {
stdout: StdioCollector { id: applyOut }
onExited: code => {
if (code !== 0) {
const line = applyOut.text.trim().split("\n").filter(l => l.startsWith("error:"))[0] || "";
mm.error = line.replace(/^error: .*?:1: /, "") || "Hyprland refused it.";
// An earlier monitor's eval may have gone through.
mm.skipRead = true;
Quickshell.execDetached(["hyprctl", "reload"]);
return;
}
mm.pending = true;
mm.countdown = 15;
tick.restart();
}
}
property Timer tick: Timer {
interval: 1000
repeat: true
onTriggered: if (--mm.countdown <= 0) mm.revert()
}
function keep() {
tick.stop();
mm.pending = false;
fv.setText(M.file(mm.draft));
mm.notice = "saved";
}
// Also what leaving the page while pending does.
function revert() {
tick.stop();
mm.pending = false;
Quickshell.execDetached(["hyprctl", "reload"]);
}
property FileView fv: FileView {
path: mm.file
atomicWrites: true
printErrors: false
}
Component.onCompleted: mm.read()
page: Component {
Page {
title: "Monitors"
actions: Component {
SaveBar { saveText: "Apply"; dirty: mm.changed && !mm.pending; valid: mm.valid
note: mm.valid ? "" : "Scale must be a positive number."
notice: mm.notice; error: mm.error; busy: mm.applyProc.running
onSave: mm.apply(); onDiscard: mm.read() }
}
MonitorsPage { width: parent.width; mod: mm }
}
}
}
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