mirror of
https://invent.kde.org/marcoa/shift-shell.git
synced 2026-06-11 16:57:43 +00:00
Marco Allegretti
3fba9798e4
Expose snapLayoutsEnabled through MobileShellSettings and store it\nin plasmamobilerc.\n\nUse the setting in the Shift snap assist effect eligibility logic\nand add a Convergence KCM switch to control it.\n\nKeep the switch disabled when convergence is off, gaming mode is on,\nor dynamic tiling is enabled so window-placement ownership stays\nconsistent.
725 lines
26 KiB
QML
725 lines
26 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 Snap Assist — KWin declarative SceneEffect
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//
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// Presents a floating panel of layout preset buttons.
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// Activated by:
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// 1. Meta+Shift+S keyboard shortcut
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// 2. Hovering the maximize button in convergence mode while dynamic tiling is off
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//
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// When a preset is clicked, the active window's frameGeometry is set to the
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// chosen zone (with outer gaps applied).
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import QtQuick
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import QtQuick.Layouts
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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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KWinComponents.SceneEffect {
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id: effect
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visible: false
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readonly property bool snapLayoutsEligible: ShellSettings.Settings.convergenceModeEnabled
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&& !ShellSettings.Settings.gamingModeEnabled
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&& !ShellSettings.Settings.dynamicTilingEnabled
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&& ShellSettings.Settings.snapLayoutsEnabled
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readonly property int hoverBarHeight: 30
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readonly property int decorationButtonSize: 16
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readonly property int decorationButtonSpacing: 8
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readonly property int decorationButtonSideMargin: 12
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readonly property int maximizeButtonPadding: 4
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readonly property int hoverTimerInterval: 75
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readonly property int hoverDwellTicks: 14
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readonly property int hoverMoveTolerance: 5
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readonly property int hoverCooldownMs: 1200
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readonly property int panelDismissMargin: 24
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readonly property int panelScreenMargin: 8
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readonly property int panelCursorGap: 12
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readonly property int panelCursorRightBias: 34
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property var hoverWindowId: null
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property int hoverTicks: 0
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property string hoverWindowStateKey: ""
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property bool hoverSuppressedUntilLeave: false
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property point hoverAnchorPos: Qt.point(0, 0)
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property double hoverCooldownUntil: 0
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property var panelAnchorPos: Qt.point(0, 0)
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property string panelAnchorScreenName: ""
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property bool previewVisible: false
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property rect previewGeometry: Qt.rect(0, 0, 0, 0)
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property rect previewArea: Qt.rect(0, 0, 0, 0)
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property var previewZones: []
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property int previewActiveIndex: -1
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property string previewScreenName: ""
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function resetHoverState() {
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hoverWindowId = null;
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hoverTicks = 0;
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hoverWindowStateKey = "";
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hoverSuppressedUntilLeave = false;
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hoverAnchorPos = Qt.point(0, 0);
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}
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function resetHoverCandidate(win) {
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hoverWindowId = win ? win.internalId : null;
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hoverTicks = 1;
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hoverWindowStateKey = win ? windowStateKey(win) : "";
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hoverSuppressedUntilLeave = false;
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hoverAnchorPos = KWinComponents.Workspace.cursorPos;
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}
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function setHoverCooldown() {
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hoverCooldownUntil = Date.now() + hoverCooldownMs;
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}
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function hoverOnCooldown() {
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return Date.now() < hoverCooldownUntil;
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}
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function hoverMovedTooFar() {
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const cursor = KWinComponents.Workspace.cursorPos;
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const dx = cursor.x - hoverAnchorPos.x;
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const dy = cursor.y - hoverAnchorPos.y;
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return dx * dx + dy * dy > hoverMoveTolerance * hoverMoveTolerance;
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}
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function windowStateKey(win) {
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const geometry = win.frameGeometry;
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const maximized = win.maximized === undefined ? "" : win.maximized;
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return maximized + ":" + geometry.x + "," + geometry.y + "," + geometry.width + "x" + geometry.height;
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}
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function hideSnapLayouts() {
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if (visible) {
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setHoverCooldown();
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}
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visible = false;
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resetHoverState();
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panelAnchorScreenName = "";
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hideSnapPreview();
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}
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function showSnapLayouts() {
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const win = KWinComponents.Workspace.activeWindow;
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panelAnchorPos = KWinComponents.Workspace.cursorPos;
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panelAnchorScreenName = win && win.output ? win.output.name : "";
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visible = true;
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}
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function toggleActiveWindowMaximized() {
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const win = KWinComponents.Workspace.activeWindow;
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if (!win || !win.normalWindow || win.fullScreen || !win.maximizable) {
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hideSnapLayouts();
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return;
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}
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const maximize = !win.maximized;
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win.setMaximize(maximize, maximize);
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hideSnapLayouts();
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setHoverCooldown();
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}
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function hideSnapPreview() {
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previewVisible = false;
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previewScreenName = "";
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previewZones = [];
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previewActiveIndex = -1;
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KWinComponents.Workspace.hideOutline();
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}
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function showSnapPreview(preset, activeIndex) {
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const win = KWinComponents.Workspace.activeWindow;
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if (!win || !win.output) {
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hideSnapPreview();
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return;
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}
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const desktop = win.desktops.length > 0 ? win.desktops[0] : null;
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if (!desktop) {
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hideSnapPreview();
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return;
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}
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const area = KWinComponents.Workspace.clientArea(KWinComponents.Workspace.MaximizeArea, win.output, desktop);
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const zone = preset.zones[activeIndex];
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const gap = effect.outerGap;
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previewGeometry = Qt.rect(
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area.x + Math.round(zone.x * area.width) + gap,
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area.y + Math.round(zone.y * area.height) + gap,
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Math.round(zone.w * area.width) - 2 * gap,
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Math.round(zone.h * area.height) - 2 * gap
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);
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previewArea = area;
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previewZones = preset.zones;
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previewActiveIndex = activeIndex;
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previewScreenName = win.output.name;
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previewVisible = true;
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KWinComponents.Workspace.hideOutline();
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}
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function cursorInActiveWindowMaximizeStrip() {
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const win = KWinComponents.Workspace.activeWindow;
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if (!win || !win.normalWindow || win.fullScreen || !win.maximizable) {
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return false;
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}
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const cursor = KWinComponents.Workspace.cursorPos;
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const button = maximizeButtonRect(win);
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if (button.width <= 0 || button.height <= 0) {
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return false;
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}
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return cursor.x >= button.x - effect.maximizeButtonPadding
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&& cursor.x <= button.x + button.width + effect.maximizeButtonPadding
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&& cursor.y >= button.y - effect.maximizeButtonPadding
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&& cursor.y <= button.y + button.height + effect.maximizeButtonPadding;
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}
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function decorationButtonVisible(code) {
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return code === "M" || code === "N" || code === "I" || code === "A" || code === "X";
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}
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function visibleDecorationButtons(sequence) {
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const buttons = [];
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for (let i = 0; i < sequence.length; i++) {
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const code = sequence[i];
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if (decorationButtonVisible(code)) {
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buttons.push(code);
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}
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}
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return buttons;
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}
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function maximizeButtonRect(win) {
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const fg = win.frameGeometry;
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const buttonY = fg.y + Math.round((effect.hoverBarHeight - effect.decorationButtonSize) / 2);
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const leftButtons = visibleDecorationButtons(ShellSettings.KWinSettings.titleButtonsOnLeft);
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const leftIndex = leftButtons.indexOf("A");
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if (leftIndex >= 0) {
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return Qt.rect(
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fg.x + effect.decorationButtonSideMargin + leftIndex * (effect.decorationButtonSize + effect.decorationButtonSpacing),
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buttonY,
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effect.decorationButtonSize,
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effect.decorationButtonSize
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);
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}
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const rightButtons = visibleDecorationButtons(ShellSettings.KWinSettings.titleButtonsOnRight);
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const rightIndex = rightButtons.indexOf("A");
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if (rightIndex >= 0) {
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const rowWidth = rightButtons.length * effect.decorationButtonSize
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+ Math.max(0, rightButtons.length - 1) * effect.decorationButtonSpacing;
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return Qt.rect(
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fg.x + fg.width - effect.decorationButtonSideMargin - rowWidth
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+ rightIndex * (effect.decorationButtonSize + effect.decorationButtonSpacing),
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buttonY,
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effect.decorationButtonSize,
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effect.decorationButtonSize
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);
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}
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return Qt.rect(0, 0, 0, 0);
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}
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function cursorInPanel(screen) {
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if (!screen) {
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return false;
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}
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if (panelAnchorScreenName !== "" && panelAnchorScreenName !== screen.name) {
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return false;
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}
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const cursor = KWinComponents.Workspace.cursorPos;
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const panel = panelRect(screen);
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return cursor.x >= panel.x - panelDismissMargin
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&& cursor.x <= panel.x + panel.width + panelDismissMargin
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&& cursor.y >= panel.y - panelDismissMargin
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&& cursor.y <= panel.y + panel.height + panelDismissMargin;
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}
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function panelRect(screen) {
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const minX = screen.geometry.x + panelScreenMargin;
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const maxX = screen.geometry.x + screen.geometry.width - snapPanelWidth - panelScreenMargin;
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const minY = screen.geometry.y + panelScreenMargin;
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const maxY = screen.geometry.y + screen.geometry.height - snapPanelHeight - panelScreenMargin;
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const wantedX = panelAnchorPos.x - snapPanelWidth + panelCursorRightBias;
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const wantedY = panelAnchorPos.y + panelCursorGap;
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return Qt.rect(
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Math.max(minX, Math.min(maxX, wantedX)),
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Math.max(minY, Math.min(maxY, wantedY)),
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snapPanelWidth,
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snapPanelHeight
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);
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}
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// ── Visibility ────────────────────────────────────────────────────────
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// The effect starts invisible; toggle via shortcut.
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// SceneEffect.visible controls whether delegates are painted.
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KWinComponents.ShortcutHandler {
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name: "SHIFT Snap Assist"
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text: "SHIFT Snap Assist: Show snap layout picker"
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sequence: "Meta+Shift+S"
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onActivated: {
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if (!effect.snapLayoutsEligible) {
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effect.hideSnapLayouts();
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return;
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}
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if (effect.visible) {
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effect.hideSnapLayouts();
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} else {
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effect.showSnapLayouts();
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}
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}
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}
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KWinComponents.ShortcutHandler {
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name: "SHIFT Snap Assist Escape"
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text: "SHIFT Snap Assist: Hide snap layout picker"
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sequence: "Esc"
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onActivated: effect.hideSnapLayouts()
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}
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Timer {
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id: hoverTimer
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interval: effect.hoverTimerInterval
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repeat: true
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running: effect.snapLayoutsEligible
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onTriggered: {
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if (effect.visible) {
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const screen = KWinComponents.Workspace.activeWindow ? KWinComponents.Workspace.activeWindow.output : null;
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if (!effect.cursorInActiveWindowMaximizeStrip() && !effect.cursorInPanel(screen)) {
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effect.hideSnapLayouts();
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} else {
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effect.resetHoverState();
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}
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return;
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}
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const win = KWinComponents.Workspace.activeWindow;
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if (!win || !win.normalWindow || win.fullScreen || !win.maximizable) {
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effect.resetHoverState();
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return;
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}
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if (!effect.cursorInActiveWindowMaximizeStrip()) {
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effect.resetHoverState();
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return;
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}
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if (effect.hoverOnCooldown()) {
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effect.resetHoverState();
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return;
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}
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if (effect.hoverWindowId !== win.internalId) {
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effect.resetHoverCandidate(win);
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return;
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}
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if (effect.hoverMovedTooFar()) {
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effect.resetHoverCandidate(win);
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return;
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}
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const stateKey = effect.windowStateKey(win);
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if (stateKey !== effect.hoverWindowStateKey) {
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effect.hoverWindowStateKey = stateKey;
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effect.hoverTicks = 0;
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effect.hoverSuppressedUntilLeave = true;
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effect.setHoverCooldown();
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return;
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}
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if (effect.hoverSuppressedUntilLeave) {
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return;
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}
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effect.hoverTicks++;
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if (effect.hoverTicks >= effect.hoverDwellTicks) {
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effect.showSnapLayouts();
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effect.resetHoverState();
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}
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}
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}
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Connections {
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target: KWinComponents.Workspace
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function onActiveWindowChanged() {
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effect.resetHoverState();
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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 (!effect.snapLayoutsEligible) {
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effect.hideSnapLayouts();
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}
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}
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function onGamingModeEnabledChanged() {
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if (!effect.snapLayoutsEligible) {
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effect.hideSnapLayouts();
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}
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}
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function onDynamicTilingEnabledChanged() {
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if (!effect.snapLayoutsEligible) {
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effect.hideSnapLayouts();
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}
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}
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function onSnapLayoutsEnabledChanged() {
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if (!effect.snapLayoutsEligible) {
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effect.hideSnapLayouts();
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}
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}
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}
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// ── Gap constant (must match shift-tiling) ────────────────────────────
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readonly property int outerGap: 8
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// ── Layout presets ────────────────────────────────────────────────────
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// Each preset is an array of zone descriptors:
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// { x, y, w, h } in relative [0..1] coordinates (of work area).
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// The first zone is where the ACTIVE window will be placed.
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// Remaining zones are currently visual-only.
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readonly property var presets: [
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{
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name: "Half left",
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zones: [
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{ x: 0, y: 0, w: 0.5, h: 1 },
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{ x: 0.5, y: 0, w: 0.5, h: 1 }
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]
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},
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{
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name: "Thirds",
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zones: [
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{ x: 0, y: 0, w: 0.333, h: 1 },
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{ x: 0.333, y: 0, w: 0.334, h: 1 },
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{ x: 0.667, y: 0, w: 0.333, h: 1 }
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]
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},
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{
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name: "Main + side",
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zones: [
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{ x: 0, y: 0, w: 0.667, h: 1 },
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{ x: 0.667, y: 0, w: 0.333, h: 1 }
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]
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},
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{
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name: "Side + main",
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zones: [
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{ x: 0.333, y: 0, w: 0.667, h: 1 },
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{ x: 0, y: 0, w: 0.333, h: 1 }
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]
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},
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{
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name: "Quad",
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zones: [
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{ x: 0, y: 0, w: 0.5, h: 0.5 },
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{ x: 0.5, y: 0, w: 0.5, h: 0.5 },
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{ x: 0, y: 0.5, w: 0.5, h: 0.5 },
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{ x: 0.5, y: 0.5, w: 0.5, h: 0.5 }
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]
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},
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{
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name: "Main + two",
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zones: [
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{ x: 0, y: 0, w: 0.5, h: 1 },
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{ x: 0.5, y: 0, w: 0.5, h: 0.5 },
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{ x: 0.5, y: 0.5, w: 0.5, h: 0.5 }
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]
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}
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]
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readonly property int snapButtonWidth: 58
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readonly property int snapButtonHeight: 38
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readonly property int snapButtonSpacing: 8
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readonly property int snapPanelHorizontalPadding: 28
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readonly property int snapPanelVerticalPadding: 34
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readonly property int snapPanelWidth: presets.length * snapButtonWidth
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+ Math.max(0, presets.length - 1) * snapButtonSpacing
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+ snapPanelHorizontalPadding
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readonly property int snapPanelHeight: snapButtonHeight + snapPanelVerticalPadding + 23
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function accentColor(alpha) {
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return Qt.rgba(46 / 255, 184 / 255, 168 / 255, alpha);
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}
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function accentPaleColor(alpha) {
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return Qt.rgba(163 / 255, 218 / 255, 212 / 255, alpha);
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}
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// Apply a zone (in relative coords) to a window given a work area rect.
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function applyZone(win, zone, area) {
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const g = effect.outerGap;
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win.frameGeometry = Qt.rect(
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area.x + Math.round(zone.x * area.width) + g,
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area.y + Math.round(zone.y * area.height) + g,
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Math.round(zone.w * area.width) - 2 * g,
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Math.round(zone.h * area.height) - 2 * g
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);
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}
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// ── Per-screen delegate ───────────────────────────────────────────────
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delegate: Rectangle {
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id: screenDelegate
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readonly property var targetScreen: KWinComponents.SceneView.screen
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readonly property rect popupRect: effect.panelRect(targetScreen)
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color: "transparent"
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KWinComponents.DesktopBackground {
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anchors.fill: parent
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z: -100
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activity: KWinComponents.Workspace.currentActivity
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desktop: KWinComponents.Workspace.currentDesktop
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outputName: screenDelegate.targetScreen.name
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}
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Instantiator {
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model: KWinComponents.WindowFilterModel {
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desktop: KWinComponents.Workspace.currentDesktop
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screenName: screenDelegate.targetScreen.name
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windowModel: stackModel
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minimizedWindows: false
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windowType: ~KWinComponents.WindowFilterModel.Desktop
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& ~KWinComponents.WindowFilterModel.Notification
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& ~KWinComponents.WindowFilterModel.CriticalNotification
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}
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KWinComponents.WindowThumbnail {
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wId: model.window.internalId
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x: model.window.x - screenDelegate.targetScreen.geometry.x
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y: model.window.y - screenDelegate.targetScreen.geometry.y
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z: model.window.stackingOrder
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visible: !model.window.hidden
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}
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onObjectAdded: (index, object) => {
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object.parent = screenDelegate
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}
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}
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KWinComponents.WindowModel {
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id: stackModel
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}
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Repeater {
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model: effect.previewVisible && effect.previewScreenName === screenDelegate.targetScreen.name ? effect.previewZones : []
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delegate: Rectangle {
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required property var modelData
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|
required property int index
|
|
|
|
readonly property bool activeZone: index === effect.previewActiveIndex
|
|
readonly property int previewGap: effect.outerGap
|
|
|
|
x: effect.previewArea.x + Math.round(modelData.x * effect.previewArea.width) + previewGap - screenDelegate.targetScreen.geometry.x
|
|
y: effect.previewArea.y + Math.round(modelData.y * effect.previewArea.height) + previewGap - screenDelegate.targetScreen.geometry.y
|
|
width: Math.max(1, Math.round(modelData.w * effect.previewArea.width) - 2 * previewGap)
|
|
height: Math.max(1, Math.round(modelData.h * effect.previewArea.height) - 2 * previewGap)
|
|
z: activeZone ? 90001 : 90000
|
|
radius: 6
|
|
color: activeZone ? effect.accentColor(0.24)
|
|
: effect.accentPaleColor(0.08)
|
|
border.width: activeZone ? 2 : 1
|
|
border.color: activeZone ? effect.accentPaleColor(0.78)
|
|
: effect.accentPaleColor(0.26)
|
|
}
|
|
}
|
|
|
|
Keys.onEscapePressed: effect.hideSnapLayouts()
|
|
|
|
Item {
|
|
id: maximizeForwarder
|
|
|
|
readonly property var activeWindow: KWinComponents.Workspace.activeWindow
|
|
readonly property rect buttonRect: activeWindow ? effect.maximizeButtonRect(activeWindow) : Qt.rect(0, 0, 0, 0)
|
|
|
|
visible: activeWindow
|
|
&& activeWindow.output
|
|
&& activeWindow.output.name === screenDelegate.targetScreen.name
|
|
&& buttonRect.width > 0
|
|
&& buttonRect.height > 0
|
|
z: 100001
|
|
x: buttonRect.x - effect.maximizeButtonPadding - screenDelegate.targetScreen.geometry.x
|
|
y: buttonRect.y - effect.maximizeButtonPadding - screenDelegate.targetScreen.geometry.y
|
|
width: buttonRect.width + 2 * effect.maximizeButtonPadding
|
|
height: buttonRect.height + 2 * effect.maximizeButtonPadding
|
|
|
|
TapHandler {
|
|
acceptedButtons: Qt.LeftButton
|
|
onTapped: effect.toggleActiveWindowMaximized()
|
|
}
|
|
}
|
|
|
|
SnapPanel {
|
|
id: snapPanel
|
|
visible: effect.panelAnchorScreenName === "" || effect.panelAnchorScreenName === screenDelegate.targetScreen.name
|
|
z: 100000
|
|
x: screenDelegate.popupRect.x - screenDelegate.targetScreen.geometry.x
|
|
y: screenDelegate.popupRect.y - screenDelegate.targetScreen.geometry.y
|
|
|
|
screen: KWinComponents.SceneView.screen
|
|
}
|
|
}
|
|
|
|
// ── Snap panel component ──────────────────────────────────────────────
|
|
|
|
component SnapPanel: Rectangle {
|
|
id: panel
|
|
|
|
required property var screen
|
|
|
|
width: effect.snapPanelWidth
|
|
height: effect.snapPanelHeight
|
|
|
|
color: Qt.rgba(0.08, 0.10, 0.15, 0.82)
|
|
radius: 8
|
|
border.width: 1
|
|
border.color: Qt.rgba(1, 1, 1, 0.16)
|
|
|
|
Rectangle {
|
|
anchors.fill: parent
|
|
anchors.topMargin: 3
|
|
color: Qt.rgba(0, 0, 0, 0.22)
|
|
radius: parent.radius
|
|
z: -1
|
|
}
|
|
|
|
Column {
|
|
anchors { fill: parent; margins: 14 }
|
|
spacing: 10
|
|
|
|
Text {
|
|
text: "Snap layouts"
|
|
color: effect.accentPaleColor(0.9)
|
|
font.pixelSize: 10
|
|
font.capitalization: Font.AllUppercase
|
|
}
|
|
|
|
Row {
|
|
id: presetsRow
|
|
spacing: effect.snapButtonSpacing
|
|
|
|
Repeater {
|
|
model: effect.presets
|
|
|
|
delegate: PresetButton {
|
|
required property var modelData
|
|
|
|
preset: modelData
|
|
screen: panel.screen
|
|
onClicked: {
|
|
effect.hideSnapLayouts();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// ── Preset button ─────────────────────────────────────────────────────
|
|
|
|
component PresetButton: Rectangle {
|
|
id: btn
|
|
|
|
required property var preset
|
|
required property var screen
|
|
signal clicked
|
|
|
|
width: effect.snapButtonWidth
|
|
height: effect.snapButtonHeight
|
|
readonly property int previewMargin: 6
|
|
|
|
color: hovered ? Qt.rgba(1, 1, 1, 0.18) : Qt.rgba(1, 1, 1, 0.08)
|
|
radius: 6
|
|
border.width: 1
|
|
border.color: hovered ? effect.accentPaleColor(0.62) : Qt.rgba(1, 1, 1, 0.14)
|
|
|
|
property bool hovered: false
|
|
|
|
Behavior on color { ColorAnimation { duration: 80 } }
|
|
|
|
Rectangle {
|
|
id: previewFrame
|
|
anchors.fill: parent
|
|
anchors.margins: btn.previewMargin
|
|
color: Qt.rgba(0.06, 0.08, 0.12, 0.72)
|
|
radius: 4
|
|
border.width: 1
|
|
border.color: Qt.rgba(1, 1, 1, 0.08)
|
|
clip: true
|
|
|
|
Repeater {
|
|
model: btn.preset.zones
|
|
|
|
delegate: Rectangle {
|
|
required property var modelData
|
|
required property int index
|
|
|
|
x: Math.round(modelData.x * previewFrame.width)
|
|
y: Math.round(modelData.y * previewFrame.height)
|
|
width: Math.max(4, Math.round(modelData.w * previewFrame.width) - 1)
|
|
height: Math.max(4, Math.round(modelData.h * previewFrame.height) - 1)
|
|
color: zoneHover.hovered ? effect.accentPaleColor(0.96)
|
|
: (index === 0 ? effect.accentColor(0.96)
|
|
: effect.accentPaleColor(0.48))
|
|
border.width: 0
|
|
radius: 2
|
|
|
|
HoverHandler {
|
|
id: zoneHover
|
|
onHoveredChanged: {
|
|
btn.hovered = hovered;
|
|
if (hovered) {
|
|
effect.showSnapPreview(btn.preset, index);
|
|
}
|
|
}
|
|
}
|
|
|
|
TapHandler {
|
|
onTapped: btn.applyZone(modelData)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
HoverHandler {
|
|
onHoveredChanged: {
|
|
if (!hovered) {
|
|
btn.hovered = false;
|
|
effect.hideSnapPreview();
|
|
}
|
|
}
|
|
}
|
|
|
|
function applyZone(zone) {
|
|
const win = KWinComponents.Workspace.activeWindow;
|
|
if (!win || !win.output) {
|
|
btn.clicked();
|
|
return;
|
|
}
|
|
const desktop = win.desktops.length > 0 ? win.desktops[0] : null;
|
|
if (!desktop) {
|
|
btn.clicked();
|
|
return;
|
|
}
|
|
const area = KWinComponents.Workspace.clientArea(
|
|
KWinComponents.Workspace.MaximizeArea, win.output, desktop);
|
|
effect.hideSnapPreview();
|
|
effect.applyZone(win, zone, area);
|
|
btn.clicked();
|
|
}
|
|
}
|
|
}
|