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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.
-
-pragma Singleton
-
-import Quickshell
-import Quickshell.Io
-import QtQuick
-
-// The wallpaper side. Setting one is `wallp`'s job: it knows about the two
-// outputs, the saved state and the accent run, and none of that is worth
-// reimplementing here.
-Singleton {
- id: root
-
- readonly property string home: Quickshell.env("HOME")
- readonly property string dir: `${home}/Pictures/wallpapers`
- // The distribution's wallpapers: loose images, and Plasma packages that
- // each carry one picture at several resolutions under contents/images/,
- // some with a dark version under contents/images_dark/.
- readonly property string sysDir: "/usr/share/wallpapers"
-
- // Which screen a pick applies to. wallp calls them H and V.
- property string target: "H"
-
- // Staged picks, empty until something is chosen. Selecting does not set
- // anything: both screens can be composed and applied together, which is
- // also a single wallp call rather than two.
- property string pendingH: ""
- property string pendingV: ""
- readonly property bool dirty: pendingH !== "" || pendingV !== ""
-
- function pick(path) {
- if (target === "V") pendingV = path;
- else pendingH = path;
- }
-
- function clearPending() { pendingH = ""; pendingV = ""; }
-
- // What a screen should show: the staged pick if there is one, else what
- // is actually set.
- function shown(which) {
- if (which === "V") return pendingV !== "" ? pendingV : currentV;
- return pendingH !== "" ? pendingH : currentH;
- }
-
- property list<string> files: []
- property bool scanning: true
- property bool applying: false
- signal applied(bool ok, string message)
-
- // Sorted by most recent first: the wallpaper wanted now is usually one
- // added recently. -maxdepth keeps a stray git checkout from being walked.
- function refresh() {
- scanning = true;
- scanProc.running = false;
- scanProc.running = true;
- }
-
- Process {
- id: scanProc
- running: true
- // img DIR "DEPTH" [ACTIONS...]: the image files under DIR. DEPTH is
- // left unquoted on purpose, so "-maxdepth 2" splits into two words
- // and "" vanishes.
- command: ["sh", "-c",
- `img() { d=$1; o=$2; shift 2; find "$d" $o -type f ` +
- `\\( -iname '*.png' -o -iname '*.jpg' -o -iname '*.jpeg' -o -iname '*.webp' \\) "$@" 2>/dev/null; }; ` +
- `img ${JSON.stringify(root.dir)} "-maxdepth 2" -not -path '*/.*' -printf '%T@ %p\\n' | sort -rn | cut -d' ' -f2-; ` +
- `img ${JSON.stringify(root.sysDir)} "-maxdepth 1" | sort; ` +
- `img ${JSON.stringify(root.sysDir)} "" -path '*/contents/images*/*'`]
- stdout: StdioCollector {
- onStreamFinished: {
- root.files = text.trim().split("\n").filter(s => s.length);
- root.scanning = false;
- sizeProc.running = false;
- sizeProc.command = ["sh", "-c", 'printf "%s\\0" "$@" | xargs -0 -r file -N -0', "sh"].concat(root.files);
- sizeProc.running = true;
- }
- }
- }
-
- // Each file's pixel size, by path, from `file`, which reads only the
- // header: about half a second for a thousand. -0 ends the name with a
- // NUL, since a name can hold the ": " that would otherwise end it. The
- // size is the last WxH in the description, because a JPEG's comes after
- // its "density 72x72". A file `file` gives no size for has no entry and
- // gets no quality colour.
- property var sizes: ({})
- Process {
- id: sizeProc
- stdout: StdioCollector {
- onStreamFinished: {
- const out = {};
- for (const line of text.split("\n")) {
- const nul = line.indexOf("\0");
- if (nul < 0) continue;
- const re = /(\d+) ?x ?(\d+)/g;
- let m, last = null;
- while ((m = re.exec(line.slice(nul + 1))) !== null) last = m;
- if (last) out[line.slice(0, nul)] = { w: +last[1], h: +last[2] };
- }
- root.sizes = out;
- }
- }
- }
-
- // The screens wallp sets, as the mock draws them: DP-1 wide, DP-3 turned
- // upright.
- // ponytail: fixed, like the mock; read Quickshell.screens if a monitor
- // changes.
- readonly property var panels: ({ H: { w: 2560, h: 1080 }, V: { w: 1080, h: 1920 } })
-
- // How far swaybg's `-m fill` has to enlarge an image to cover a screen,
- // 0 when the size is unknown. At or under 1 it is downscaled and sharp;
- // to 1.33 the softening is slight; past that it shows pixels.
- function upscale(path, which) {
- const s = sizes[path];
- const p = panels[which];
- return s && s.w > 0 && s.h > 0 ? Math.max(p.w / s.w, p.h / s.h) : 0;
- }
- function qualityColor(path, which) {
- const u = upscale(path, which);
- return u === 0 ? "transparent" : u <= 1 ? Theme.green : u <= 1.33 ? Theme.yellow : Theme.red;
- }
- // Why an image that fits will still look bad, or "" when it will not.
- function qualityNote(path, which) {
- const u = upscale(path, which);
- if (u <= 1) return "";
- const s = sizes[path], p = panels[which];
- return `${s.w}×${s.h} is enlarged ${u.toFixed(2)}× to cover the ${p.w}×${p.h} screen: `
- + (u <= 1.33 ? "each image pixel is spread over more than one screen pixel, so it will look slightly soft."
- : "each image pixel becomes a visible block, so it will look pixelated.");
- }
-
- function basename(path) { return path.slice(path.lastIndexOf("/") + 1); }
-
- // The files by the subfolder they sit in, folders by name, each keeping
- // the newest-first order of `files`. Images loose in `dir` itself form a
- // group named after it, which sorts first. A folder with no images at
- // the scanned depth has no group. The system ones follow: its loose
- // images as "system", and the Plasma packages as "Plasma", one image
- // each: the dark version where the package has one, else the light, and
- // of those the largest by the WxH its file is named after. `key` is what
- // `expanded` is indexed by, so a local folder named "system" stays apart.
- readonly property var groups: {
- const local = {}, system = [], plasma = {};
- for (const f of files) {
- if (f.startsWith(dir + "/")) {
- const rel = f.slice(dir.length + 1);
- const key = rel.includes("/") ? rel.slice(0, rel.indexOf("/")) : "";
- if (!local[key]) local[key] = [];
- local[key].push(f);
- } else if (f.includes("/contents/images")) {
- const pkg = f.slice(sysDir.length + 1).split("/")[0];
- if (!plasma[pkg] || rank(f) > rank(plasma[pkg])) plasma[pkg] = f;
- } else {
- system.push(f);
- }
- }
- const byName = (a, b) => a.localeCompare(b, undefined, { sensitivity: "base" });
- return Object.keys(local).sort(byName)
- .map(k => ({ key: "local/" + k, name: k || basename(dir), files: local[k] }))
- .concat([
- { key: "system", name: "system", files: system },
- { key: "plasma", name: "Plasma", files: Object.keys(plasma).sort(byName).map(k => plasma[k]) },
- ])
- .filter(g => g.files.length > 0);
- }
-
- // Dark outranks any light, then size decides.
- function rank(path) {
- const m = /(\d+)x(\d+)\.\w+$/.exec(path);
- return (path.includes("/contents/images_dark/") ? 1e12 : 0) + (m ? m[1] * m[2] : 0);
- }
-
- // What a thumbnail is called: a Plasma package's file is named after its
- // resolution, so it goes by the package instead.
- function label(path) {
- const i = path.indexOf("/contents/images");
- return i < 0 ? basename(path) : basename(path.slice(0, i));
- }
-
- // Which groups are open, by key. Here rather than in the panel, which is
- // destroyed on close, so a folder left open is open next time. Reassigned
- // whole, because bindings do not see a key change inside a var.
- property var expanded: ({})
- function toggle(key) {
- const e = Object.assign({}, expanded);
- e[key] = !e[key];
- expanded = e;
- }
-
- // What is on each screen now. wallp writes these on every set, so
- // watching them keeps the mock honest even when set from a terminal.
- property string currentH: ""
- property string currentV: ""
-
- FileView {
- path: `${root.home}/.config/wallp/wall_h`
- watchChanges: true
- onFileChanged: reload()
- onLoaded: root.currentH = text().trim()
- }
-
- FileView {
- path: `${root.home}/.config/wallp/wall_v`
- watchChanges: true
- onFileChanged: reload()
- onLoaded: root.currentV = text().trim()
- }
-
- // wallp does the work, including running udt-accent, so the accent follows
- // the new wallpaper exactly as it does from the command line. Both screens
- // go in one call: wallp accepts H= and V= together.
- function apply() {
- if (applying || !dirty) return;
- applying = true;
- const args = [];
- if (pendingH !== "") args.push(`H=${JSON.stringify(pendingH)}`);
- if (pendingV !== "") args.push(`V=${JSON.stringify(pendingV)}`);
- applyProc.command = ["sh", "-c", `wallp --set ${args.join(" ")} >/dev/null 2>&1`];
- applyProc.running = true;
- }
-
- Process {
- id: applyProc
- stderr: StdioCollector { id: applyErr }
- onExited: code => {
- root.applying = false;
- if (code === 0) root.clearPending();
- root.applied(code === 0, code === 0 ? "" : (applyErr.text.trim() || `wallp exited ${code}`));
- }
- }
-}