Add effective desktop style controls
This commit is contained in:
Gabriel Brown
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pragma Singleton
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// Application-facing desktop style.
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//
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// Panama owns the durable choices; gsettings is an output boundary for GTK
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// and applications that follow GNOME's desktop schemas. Commands are arrays,
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// values are validated before storage, and no user text is ever sent through a
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// shell. Hyprland's pointer setting stays live through Accessibility.
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import Quickshell
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import Quickshell.Io
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import QtQuick
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import qs.config
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Singleton {
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id: root
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readonly property string helperPath: Quickshell.shellDir + "/scripts/panama-desktop-style"
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// SearchPicker consumes [{ value, label, detail }]. Keep the raw names as
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// a separate allow-list so a caller cannot smuggle a display label into a
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// stored theme name.
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property var cursorThemes: []
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property var iconThemes: []
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property var cursorThemeNames: []
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property var iconThemeNames: []
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property bool catalogLoaded: false
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property bool scanning: false
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property bool startupApplied: false
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property string lastError: ""
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property var pending: []
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readonly property bool busy: root.scanning || catalogProcess.running
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|| runner.running || root.pending.length > 0
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readonly property int preferenceRevision: DesktopPreferences.revision
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readonly property string cursorTheme: DesktopPreferences.get("cursorTheme")
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readonly property string iconTheme: DesktopPreferences.get("iconTheme")
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readonly property string applicationFont: DesktopPreferences.get("applicationFont")
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readonly property string documentFont: DesktopPreferences.get("documentFont")
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readonly property string monospaceFont: DesktopPreferences.get("monospaceFont")
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Process {
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id: catalogProcess
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stdout: StdioCollector {
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onStreamFinished: root.acceptCatalog(this.text)
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}
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onExited: (exitCode, exitStatus) => {
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root.scanning = false;
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if (exitCode !== 0) {
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root.catalogLoaded = false;
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root.lastError = "Installed icon and pointer themes could not be read.";
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}
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}
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}
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Process {
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id: runner
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onExited: (exitCode, exitStatus) => {
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if (exitCode !== 0)
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root.lastError = "One desktop style setting could not be applied.";
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root.drain();
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}
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}
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Component.onCompleted: {
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root.ensureStarted();
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// Accessing the singleton here keeps its existing hyprctl setcursor
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// path alive for cursor-theme changes as well as cursor-size changes.
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Accessibility.applyAll();
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}
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Timer {
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id: startupApply
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interval: 1200
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onTriggered: {
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root.startupApplied = true;
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root.applyAll();
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}
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}
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Connections {
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target: DesktopPreferences
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function onRevisionChanged(): void { applyCoalesce.restart(); }
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}
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Timer {
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id: applyCoalesce
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interval: 180
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onTriggered: root.applyAll()
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}
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function ensureStarted(): void {
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if (!root.catalogLoaded && !root.scanning)
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root.refreshCatalog();
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if (!root.startupApplied && !startupApply.running)
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startupApply.restart();
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}
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function refreshCatalog(): void {
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if (catalogProcess.running)
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return;
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root.scanning = true;
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catalogProcess.exec([root.helperPath]);
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}
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function acceptCatalog(text: string): void {
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try {
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const parsed = JSON.parse(text);
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if (!parsed || !Array.isArray(parsed.cursorThemes) || !Array.isArray(parsed.iconThemes))
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throw new Error("invalid catalog shape");
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const cursors = parsed.cursorThemes.filter(name =>
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typeof name === "string" && PreferenceSchema.coerce("cursorTheme", name) !== undefined);
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const icons = parsed.iconThemes.filter(name =>
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typeof name === "string" && PreferenceSchema.coerce("iconTheme", name) !== undefined);
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root.cursorThemeNames = cursors;
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root.iconThemeNames = icons;
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root.cursorThemes = cursors.map(name => ({
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value: name,
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label: name,
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detail: "Pointer theme"
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}));
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root.iconThemes = icons.map(name => ({
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value: name,
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label: name,
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detail: "Application icon theme"
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}));
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root.catalogLoaded = true;
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root.lastError = "";
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} catch (error) {
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root.cursorThemes = [];
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root.iconThemes = [];
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root.cursorThemeNames = [];
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root.iconThemeNames = [];
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root.catalogLoaded = false;
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root.lastError = "Installed icon and pointer themes could not be read.";
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}
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root.scanning = false;
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}
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function drain(): void {
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if (runner.running || root.pending.length === 0)
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return;
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const next = root.pending[0];
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root.pending = root.pending.slice(1);
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runner.exec(next);
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}
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function enqueue(commands: var): void {
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// A fresh revision supersedes commands that have not started yet. The
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// currently running command is allowed to finish, then the newest full
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// state is replayed in a deterministic order.
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root.pending = commands;
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root.drain();
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}
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// GVariant accepts JSON-style quoted strings. JSON.stringify escapes every
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// quote, backslash, and control character, and the schema patterns further
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// constrain stored font/theme names. Arguments still travel directly to
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// gsettings rather than through a shell.
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function gvariant(value: var): string {
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if (typeof value === "boolean")
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return value ? "true" : "false";
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if (typeof value === "number")
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return String(value);
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return JSON.stringify(String(value));
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}
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function fontName(familyKey: string, sizeKey: string): string {
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return `${DesktopPreferences.get(familyKey)} ${DesktopPreferences.get(sizeKey)}`;
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}
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function buttonLayout(): string {
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const side = DesktopPreferences.get("titlebarButtonSide");
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const maximize = DesktopPreferences.get("titlebarMaximizeButton") === true;
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// Tokens are fixed. Only their side and whether maximize is present
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// vary, so preference data can never become command syntax.
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if (side === "left")
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return (maximize ? "close,maximize" : "close") + ":appmenu";
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return "appmenu:" + (maximize ? "maximize,close" : "close");
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}
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function setting(schema: string, key: string, value: var): var {
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return ["gsettings", "set", schema, key, root.gvariant(value)];
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}
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function applyAll(): void {
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root.lastError = "";
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root.enqueue([
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root.setting("org.gnome.desktop.interface", "icon-theme", root.iconTheme),
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root.setting("org.gnome.desktop.interface", "cursor-theme", root.cursorTheme),
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root.setting("org.gnome.desktop.interface", "font-name",
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root.fontName("applicationFont", "applicationFontSize")),
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root.setting("org.gnome.desktop.interface", "document-font-name",
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root.fontName("documentFont", "documentFontSize")),
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root.setting("org.gnome.desktop.interface", "monospace-font-name",
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root.fontName("monospaceFont", "monospaceFontSize")),
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root.setting("org.gnome.desktop.interface", "font-hinting",
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DesktopPreferences.get("fontHinting")),
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root.setting("org.gnome.desktop.interface", "font-antialiasing",
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DesktopPreferences.get("fontAntialiasing")),
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root.setting("org.gnome.desktop.interface", "gtk-enable-primary-paste",
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DesktopPreferences.get("middleClickPaste")),
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root.setting("org.gnome.desktop.wm.preferences", "button-layout", root.buttonLayout()),
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root.setting("org.gnome.desktop.wm.preferences", "action-double-click-titlebar",
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DesktopPreferences.get("titlebarDoubleClick"))
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]);
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}
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function storeCatalogChoice(key: string, value: string, allowed: var, kind: string): bool {
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if (!root.catalogLoaded || allowed.indexOf(value) < 0) {
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root.lastError = `That ${kind} theme is not installed.`;
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return false;
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}
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if (!DesktopPreferences.set(key, value)) {
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root.lastError = `That ${kind} theme name could not be saved.`;
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return false;
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}
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root.lastError = "";
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return true;
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}
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function setCursorTheme(value: string): bool {
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return root.storeCatalogChoice("cursorTheme", value, root.cursorThemeNames, "pointer");
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}
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function setIconTheme(value: string): bool {
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return root.storeCatalogChoice("iconTheme", value, root.iconThemeNames, "icon");
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}
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function storeFont(key: string, family: string, allowed: var, kind: string): bool {
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if (allowed.indexOf(family) < 0) {
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root.lastError = `That ${kind} font is not installed.`;
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return false;
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}
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if (!DesktopPreferences.set(key, family)) {
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root.lastError = `That ${kind} font name could not be saved.`;
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return false;
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}
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root.lastError = "";
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return true;
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}
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function setApplicationFont(family: string): bool {
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return root.storeFont("applicationFont", family, Fonts.interfaceFonts, "application");
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}
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function setDocumentFont(family: string): bool {
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return root.storeFont("documentFont", family, Fonts.interfaceFonts, "document");
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}
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function setMonospaceFont(family: string): bool {
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return root.storeFont("monospaceFont", family, Fonts.monospaceFonts, "monospace");
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}
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}
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