mirror of
https://invent.kde.org/marcoa/shift-shell.git
synced 2026-06-11 08:57:21 +00:00
Move maximize-hover handling into the snap-assist effect so it can use the actual decoration button geometry. Render the scene below the picker, anchor layouts near the cursor, and preview the selected zone without a fullscreen modal surface. A normal maximize click keeps priority: hover activation requires a deliberate pause, dismissal starts a short cooldown, and clicks on the maximize button still toggle maximize while closing the suggestion.
616 lines
24 KiB
QML
616 lines
24 KiB
QML
// SPDX-FileCopyrightText: 2026 Marco Allegretti
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// SPDX-License-Identifier: EUPL-1.2
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//
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// SHIFT Dynamic Tiling — KWin declarative script
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//
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// Architecture:
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// - One ScreenState per output, keyed by output.name
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// - Each ScreenState holds an ordered list of TileNodes
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// - A TileNode is { win, rect } where rect is absolute in-screen coordinates
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// - On any change (add/remove/resize) the layout is recomputed from scratch
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// for the affected screen using a BSP algorithm
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// - Drag detection uses interactiveMoveResizeStarted/Stepped/Finished
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// - Snap zones are the 6 screen-edge regions (left/right/top/corners)
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// - Gap: outer 8px on screen edges, inner 8px between tiles (4px each side)
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import QtQuick
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import org.kde.kwin as KWinComponents
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import org.kde.plasma.private.mobileshell.shellsettingsplugin as ShellSettings
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Item {
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id: root
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// ── Configuration ───────────────────────────────────────────────────────
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readonly property int outerGap: 8
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readonly property int innerGap: 8 // half applied to each edge → 4px per tile
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// ── State ───────────────────────────────────────────────────────────────
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// Per-screen tile list. Key: output.name Value: [{win, rect}]
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// rect is a Qt.rect in absolute screen coordinates.
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property var screenTiles: ({})
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// Windows the user has manually floated (by UUID string).
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property var floatedWindows: ({})
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// Whether tiling is globally enabled.
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property bool tilingEnabled: true
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// Drag state.
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//
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// Behaviour: dragging a tile and dropping it onto ANOTHER tile swaps
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// their positions in the BSP layout. Dropping anywhere else does
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// nothing (the window will be re-tiled into its original slot on the
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// next layout pass, unless KWin's native quick-tile / electric border
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// takes over — which is fine; we don't fight it).
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property var draggingWindow: null
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property var swapOutlineActive: false
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// Reorder state — kept stable while dragging so the rest of the layout
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// doesn't shuffle under the cursor.
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property string dragSourceScreen: ""
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property int dragSourceIndex: -1
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property var dragSwapTarget: null // {screen, index, rect} of tile under cursor
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// Deferred retile queue.
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// The dockSpaceReserver LayerShell exclusive zone needs one Wayland
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// roundtrip after setMaximize() before KWin updates MaximizeArea.
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// We queue output names and flush after 200 ms — same pattern as
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// convergentwindows constrainAfterRestoreTimer.
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property var pendingRetile: []
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Timer {
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id: retileTimer
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interval: 200
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repeat: false
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onTriggered: {
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const queue = root.pendingRetile.slice();
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root.pendingRetile = [];
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const done = {};
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for (let i = 0; i < queue.length; i++) {
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if (!done[queue[i]]) {
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done[queue[i]] = true;
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root.retileScreen(queue[i]);
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}
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}
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}
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}
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function scheduleRetile(outputName) {
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const q = root.pendingRetile.slice();
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if (q.indexOf(outputName) < 0) q.push(outputName);
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root.pendingRetile = q;
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retileTimer.restart();
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}
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// ── Tiling guard ────────────────────────────────────────────────────────
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// Active when convergence is on, gaming is off, AND the user has
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// dynamic tiling enabled in quick settings. When this returns false
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// the script is fully inert and KWin's native quick-tile behaviour
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// owns window placement.
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function isConvergence() {
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return ShellSettings.Settings.convergenceModeEnabled &&
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!ShellSettings.Settings.gamingModeEnabled &&
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ShellSettings.Settings.dynamicTilingEnabled;
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}
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// Mirror the same guard used by convergentwindows: only normalWindow is
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// reliable in the KWin 6 declarative script API. Add maximizable to
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// avoid calling setMaximize on layer-shell / panel surfaces.
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function shouldIgnore(win) {
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if (!win || win.deleted) return true;
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if (!win.normalWindow) return true; // panels, dock, desktop, layer-shell
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if (!win.maximizable) return true; // fixed/special surfaces
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if (win.fullScreen) return true;
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// Skip xwaylandvideobridge (same as convergentwindows)
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if (win.resourceClass === "xwaylandvideobridge") return true;
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return false;
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}
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function shouldFloat(win) {
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if (!win) return true;
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// Fixed-size windows (won't tile sensibly)
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const minW = win.minSize ? win.minSize.width : 0;
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const maxW = win.maxSize ? win.maxSize.width : 0;
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const minH = win.minSize ? win.minSize.height : 0;
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const maxH = win.maxSize ? win.maxSize.height : 0;
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if (minW > 0 && maxW > 0 && minW >= maxW) return true;
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if (minH > 0 && maxH > 0 && minH >= maxH) return true;
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// Manually floated
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if (floatedWindows[win.internalId]) return true;
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return false;
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}
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function isTileable(win) {
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if (!tilingEnabled) return false;
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if (!isConvergence()) return false;
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if (shouldIgnore(win)) return false;
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if (shouldFloat(win)) return false;
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return true;
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}
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// ── Layout engine ───────────────────────────────────────────────────────
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function workRect(win) {
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const output = win.output;
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const desktop = win.desktops[0];
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if (!output || !desktop) return null;
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return KWinComponents.Workspace.clientArea(
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KWinComponents.Workspace.MaximizeArea, output, desktop);
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}
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// Apply outer + inner gaps to a list of rects that together tile a screen.
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// outer: gap between screen edge and tile
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// inner: total gap between two adjacent tiles (split equally, so 4px each side)
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function applyGaps(rects, workArea) {
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if (!rects || rects.length === 0) return rects;
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const half = innerGap / 2;
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const result = [];
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for (let i = 0; i < rects.length; i++) {
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let r = rects[i];
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// Determine which edges touch the work area boundary
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const atLeft = Math.abs(r.x - workArea.x) < 2;
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const atTop = Math.abs(r.y - workArea.y) < 2;
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const atRight = Math.abs((r.x + r.width) - (workArea.x + workArea.width)) < 2;
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const atBottom = Math.abs((r.y + r.height) - (workArea.y + workArea.height)) < 2;
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const left = atLeft ? outerGap : half;
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const top = atTop ? outerGap : half;
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const right = atRight ? outerGap : half;
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const bottom = atBottom ? outerGap : half;
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result.push(Qt.rect(
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r.x + left,
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r.y + top,
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r.width - left - right,
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r.height - top - bottom
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));
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}
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return result;
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}
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// Binary-space-partition layout.
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// Splits `area` recursively for `n` windows.
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// Returns an ordered array of Qt.rect (without gaps applied).
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function bspRects(area, n) {
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if (n <= 0) return [];
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if (n === 1) return [area];
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// Pick split axis: split the longer dimension
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const splitHorizontally = area.width >= area.height;
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const rects = [];
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if (splitHorizontally) {
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// Left half gets one window; right half gets (n-1)
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const leftW = Math.round(area.width / 2);
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const left = Qt.rect(area.x, area.y, leftW, area.height);
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const right = Qt.rect(area.x + leftW, area.y, area.width - leftW, area.height);
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rects.push(left);
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const sub = bspRects(right, n - 1);
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for (let i = 0; i < sub.length; i++) rects.push(sub[i]);
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} else {
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// Top half gets one window; bottom half gets (n-1)
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const topH = Math.round(area.height / 2);
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const top = Qt.rect(area.x, area.y, area.width, topH);
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const bottom = Qt.rect(area.x, area.y + topH, area.width, area.height - topH);
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rects.push(top);
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const sub = bspRects(bottom, n - 1);
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for (let i = 0; i < sub.length; i++) rects.push(sub[i]);
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}
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return rects;
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}
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// Recompute and apply layout for a single screen.
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function retileScreen(outputName) {
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const tiles = screenTiles[outputName];
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if (!tiles || tiles.length === 0) return;
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// Get work area from the first window's output
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let area = null;
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for (let i = 0; i < tiles.length; i++) {
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const r = workRect(tiles[i].win);
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if (r) { area = r; break; }
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}
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if (!area) return;
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const n = tiles.length;
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const rawRects = bspRects(area, n);
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const gappedRects = applyGaps(rawRects, area);
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for (let i = 0; i < tiles.length; i++) {
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const win = tiles[i].win;
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if (!win || win.deleted) continue;
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const r = gappedRects[i];
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tiles[i].rect = r;
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win.frameGeometry = r;
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}
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// Trigger a binding update
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screenTiles[outputName] = tiles.slice();
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}
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// Retile all screens.
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function retileAll() {
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for (const name in screenTiles) {
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retileScreen(name);
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}
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}
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// Add a window to its screen's tile list and retile.
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function addWindow(win) {
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if (!isTileable(win)) return;
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const output = win.output;
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if (!output) return;
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const name = output.name;
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if (!screenTiles[name]) {
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screenTiles[name] = [];
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}
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// Avoid duplicates
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const tiles = screenTiles[name];
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for (let i = 0; i < tiles.length; i++) {
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if (tiles[i].win.internalId === win.internalId) return;
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}
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tiles.push({ win: win, rect: Qt.rect(0, 0, 0, 0) });
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screenTiles[name] = tiles;
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// Un-maximize now so the exclusive-zone Wayland roundtrip begins;
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// retileScreen runs 200 ms later when MaximizeArea has settled.
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// (Same pattern as convergentwindows constrainAfterRestoreTimer.)
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if (win.maximizable) win.setMaximize(false, false);
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win.noBorder = false;
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scheduleRetile(name);
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}
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// Remove a window from its screen's tile list and retile.
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function removeWindow(win) {
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if (!win) return;
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const output = win.output;
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const name = output ? output.name : null;
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// Search all screens (window may have been moved)
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for (const sName in screenTiles) {
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const tiles = screenTiles[sName];
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for (let i = 0; i < tiles.length; i++) {
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if (tiles[i].win.internalId === win.internalId) {
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tiles.splice(i, 1);
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screenTiles[sName] = tiles;
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retileScreen(sName);
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return;
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}
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}
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}
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}
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// ── Keyboard navigation helpers ──────────────────────────────────────────
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function centreOf(rect) {
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return { x: rect.x + rect.width / 2, y: rect.y + rect.height / 2 };
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}
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// Find the tile on-screen whose centre is most in `direction` from `fromRect`.
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// direction: "left"|"right"|"up"|"down"
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function findNeighbour(fromWin, direction) {
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const outputName = fromWin.output ? fromWin.output.name : null;
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if (!outputName) return null;
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const tiles = screenTiles[outputName];
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if (!tiles) return null;
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const from = fromWin.frameGeometry;
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const fc = centreOf(from);
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let best = null;
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let bestScore = Infinity;
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for (let i = 0; i < tiles.length; i++) {
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const t = tiles[i];
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if (t.win.internalId === fromWin.internalId) continue;
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const tc = centreOf(t.rect);
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const dx = tc.x - fc.x;
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const dy = tc.y - fc.y;
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let inDirection = false;
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let primary = 0;
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let secondary = 0;
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switch (direction) {
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case "left": inDirection = dx < -5; primary = -dx; secondary = Math.abs(dy); break;
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case "right": inDirection = dx > 5; primary = dx; secondary = Math.abs(dy); break;
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case "up": inDirection = dy < -5; primary = -dy; secondary = Math.abs(dx); break;
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case "down": inDirection = dy > 5; primary = dy; secondary = Math.abs(dx); break;
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}
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if (!inDirection) continue;
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// Score: penalise perpendicular distance lightly
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const score = primary + secondary * 0.3;
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if (score < bestScore) { bestScore = score; best = t.win; }
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}
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return best;
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}
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// ── Workspace connections ─────────────────────────────────────────────
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Connections {
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target: KWinComponents.Workspace
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function onWindowAdded(win) {
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if (isTileable(win)) {
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addWindow(win);
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win.interactiveMoveResizeStarted.connect(function() { root.onDragStart(win); });
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win.interactiveMoveResizeStepped.connect(function(geo) { root.onDragStep(win, geo); });
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win.interactiveMoveResizeFinished.connect(function() { root.onDragEnd(win); });
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}
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}
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function onWindowRemoved(win) {
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root.removeWindow(win);
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}
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}
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Connections {
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target: ShellSettings.Settings
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function onConvergenceModeEnabledChanged() {
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if (isConvergence()) {
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// Tile all existing normal windows
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const wins = KWinComponents.Workspace.windows;
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for (let i = 0; i < wins.length; i++) {
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addWindow(wins[i]);
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}
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} else {
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// Clear all tiles — the convergentwindows script will re-maximize
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screenTiles = {};
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}
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}
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function onGamingModeEnabledChanged() {
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if (ShellSettings.Settings.gamingModeEnabled) {
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screenTiles = {};
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} else if (isConvergence()) {
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const wins = KWinComponents.Workspace.windows;
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for (let i = 0; i < wins.length; i++) {
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addWindow(wins[i]);
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}
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}
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}
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function onDynamicTilingEnabledChanged() {
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if (isConvergence()) {
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const wins = KWinComponents.Workspace.windows;
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for (let i = 0; i < wins.length; i++) {
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addWindow(wins[i]);
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}
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} else {
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// Tiling turned off — leave windows where they are.
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screenTiles = {};
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}
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}
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}
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// ── Drag handlers ─────────────────────────────────────────────────────
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// Find the (screen, index) of an existing tile holding this window.
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function findTileSlot(win) {
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for (const sName in screenTiles) {
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const tiles = screenTiles[sName];
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for (let i = 0; i < tiles.length; i++) {
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if (tiles[i].win && tiles[i].win.internalId === win.internalId) {
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return { screen: sName, index: i };
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}
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}
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}
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return null;
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}
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// Find the tile under a cursor position, ignoring the dragged window.
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function findTileAtCursor(cursor, ignoreWin) {
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for (const sName in screenTiles) {
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const tiles = screenTiles[sName];
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for (let i = 0; i < tiles.length; i++) {
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const t = tiles[i];
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if (ignoreWin && t.win && t.win.internalId === ignoreWin.internalId) continue;
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const r = t.rect;
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if (!r || r.width <= 0 || r.height <= 0) continue;
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if (cursor.x >= r.x && cursor.x <= r.x + r.width &&
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cursor.y >= r.y && cursor.y <= r.y + r.height) {
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return { screen: sName, index: i, rect: r };
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}
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}
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}
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return null;
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}
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function onDragStart(win) {
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if (!isConvergence()) return;
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draggingWindow = win;
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swapOutlineActive = false;
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dragSwapTarget = null;
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// Remember the source slot so we can swap on drop.
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// The tile stays in screenTiles[] during the drag so the rest of
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// the layout doesn't shuffle.
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const slot = findTileSlot(win);
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if (slot) {
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dragSourceScreen = slot.screen;
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dragSourceIndex = slot.index;
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} else {
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dragSourceScreen = "";
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dragSourceIndex = -1;
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}
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}
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function onDragStep(win, geo) {
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if (!isConvergence()) return;
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if (draggingWindow !== win) return;
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// Only show an outline when the cursor is over another tile —
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// a clear visual hint that "drop here = swap".
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const cursor = KWinComponents.Workspace.cursorPos;
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const target = findTileAtCursor(cursor, win);
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if (target) {
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if (!dragSwapTarget ||
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dragSwapTarget.screen !== target.screen ||
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dragSwapTarget.index !== target.index) {
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dragSwapTarget = target;
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KWinComponents.Workspace.showOutline(target.rect);
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swapOutlineActive = true;
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}
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} else {
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dragSwapTarget = null;
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if (swapOutlineActive) {
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KWinComponents.Workspace.hideOutline();
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swapOutlineActive = false;
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}
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}
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}
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function onDragEnd(win) {
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if (!isConvergence()) return;
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if (swapOutlineActive) {
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KWinComponents.Workspace.hideOutline();
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swapOutlineActive = false;
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}
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// Dropped on another tile → swap source/target slots.
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if (dragSwapTarget && dragSourceScreen && dragSourceIndex >= 0) {
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const sScreen = dragSourceScreen;
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const sIdx = dragSourceIndex;
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const tScreen = dragSwapTarget.screen;
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const tIdx = dragSwapTarget.index;
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const sTiles = screenTiles[sScreen];
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const tTiles = screenTiles[tScreen];
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if (sTiles && tTiles && sTiles[sIdx] && tTiles[tIdx]) {
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const a = sTiles[sIdx];
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const b = tTiles[tIdx];
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if (sScreen === tScreen) {
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sTiles[sIdx] = b;
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sTiles[tIdx] = a;
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screenTiles[sScreen] = sTiles.slice();
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retileScreen(sScreen);
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} else {
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sTiles[sIdx] = b;
|
|
tTiles[tIdx] = a;
|
|
screenTiles[sScreen] = sTiles.slice();
|
|
screenTiles[tScreen] = tTiles.slice();
|
|
retileScreen(sScreen);
|
|
retileScreen(tScreen);
|
|
}
|
|
}
|
|
}
|
|
// Dropped elsewhere → restore the source tile to its original slot.
|
|
// (KWin's native quick-tile may have moved the window; retileScreen
|
|
// sets frameGeometry back to the BSP rect so the layout stays intact.)
|
|
else if (dragSourceScreen && dragSourceIndex >= 0) {
|
|
retileScreen(dragSourceScreen);
|
|
}
|
|
|
|
dragSwapTarget = null;
|
|
dragSourceScreen = "";
|
|
dragSourceIndex = -1;
|
|
draggingWindow = null;
|
|
}
|
|
|
|
// ── Keyboard shortcuts ─────────────────────────────────────────────────
|
|
|
|
// Focus navigation
|
|
KWinComponents.ShortcutHandler {
|
|
name: "SHIFT Tiling Focus Left"
|
|
text: "SHIFT Tiling: Focus window to the left"
|
|
sequence: "Meta+H"
|
|
onActivated: {
|
|
const win = KWinComponents.Workspace.activeWindow;
|
|
if (!win) return;
|
|
const target = root.findNeighbour(win, "left");
|
|
if (target) KWinComponents.Workspace.activeWindow = target;
|
|
}
|
|
}
|
|
KWinComponents.ShortcutHandler {
|
|
name: "SHIFT Tiling Focus Right"
|
|
text: "SHIFT Tiling: Focus window to the right"
|
|
sequence: "Meta+L"
|
|
onActivated: {
|
|
const win = KWinComponents.Workspace.activeWindow;
|
|
if (!win) return;
|
|
const target = root.findNeighbour(win, "right");
|
|
if (target) KWinComponents.Workspace.activeWindow = target;
|
|
}
|
|
}
|
|
KWinComponents.ShortcutHandler {
|
|
name: "SHIFT Tiling Focus Up"
|
|
text: "SHIFT Tiling: Focus window above"
|
|
sequence: "Meta+K"
|
|
onActivated: {
|
|
const win = KWinComponents.Workspace.activeWindow;
|
|
if (!win) return;
|
|
const target = root.findNeighbour(win, "up");
|
|
if (target) KWinComponents.Workspace.activeWindow = target;
|
|
}
|
|
}
|
|
KWinComponents.ShortcutHandler {
|
|
name: "SHIFT Tiling Focus Down"
|
|
text: "SHIFT Tiling: Focus window below"
|
|
sequence: "Meta+J"
|
|
onActivated: {
|
|
const win = KWinComponents.Workspace.activeWindow;
|
|
if (!win) return;
|
|
const target = root.findNeighbour(win, "down");
|
|
if (target) KWinComponents.Workspace.activeWindow = target;
|
|
}
|
|
}
|
|
|
|
// Float toggle
|
|
KWinComponents.ShortcutHandler {
|
|
name: "SHIFT Tiling Float Toggle"
|
|
text: "SHIFT Tiling: Toggle float for active window"
|
|
sequence: "Meta+F"
|
|
onActivated: {
|
|
const win = KWinComponents.Workspace.activeWindow;
|
|
if (!win) return;
|
|
const id = win.internalId;
|
|
if (root.floatedWindows[id]) {
|
|
delete root.floatedWindows[id];
|
|
root.addWindow(win);
|
|
} else {
|
|
root.floatedWindows[id] = true;
|
|
root.removeWindow(win);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Tiling on/off
|
|
KWinComponents.ShortcutHandler {
|
|
name: "SHIFT Tiling Toggle"
|
|
text: "SHIFT Tiling: Toggle tiling on/off"
|
|
sequence: "Meta+T"
|
|
onActivated: {
|
|
root.tilingEnabled = !root.tilingEnabled;
|
|
if (root.tilingEnabled) {
|
|
const wins = KWinComponents.Workspace.windows;
|
|
for (let i = 0; i < wins.length; i++) root.addWindow(wins[i]);
|
|
} else {
|
|
root.screenTiles = {};
|
|
}
|
|
}
|
|
}
|
|
|
|
// ── Right-click menu ──────────────────────────────────────────────────
|
|
|
|
// Note: registerUserActionsMenu is a global function in KWin JS scripts.
|
|
// In declarative QML scripts it is exposed via the KWin global object.
|
|
// We wire it up after the component is complete.
|
|
Component.onCompleted: {
|
|
// Connect to existing windows
|
|
const wins = KWinComponents.Workspace.windows;
|
|
for (let i = 0; i < wins.length; i++) {
|
|
const win = wins[i];
|
|
if (isTileable(win)) {
|
|
addWindow(win);
|
|
win.interactiveMoveResizeStarted.connect(function() { root.onDragStart(win); });
|
|
win.interactiveMoveResizeStepped.connect(function(geo) { root.onDragStep(win, geo); });
|
|
win.interactiveMoveResizeFinished.connect(function() { root.onDragEnd(win); });
|
|
}
|
|
}
|
|
}
|
|
}
|