feat: initial commit for pixel-snapping components and helpers

Modules/Dashboard/Tabs.qml

@@ -4,6 +4,8 @@ import QtQuick
 import QtQuick.Layouts
 import QtQuick.Templates
 import Quickshell
+import ZShell
+import ZShell.Components
 import ZShell.Config
 import qs.Components
 import qs.Services
@@ -16,9 +18,17 @@ Item {
 	required property var tabs
 
 	readonly property alias count: bar.count
-	readonly property int tabIndicatorSpacing: Tokens.spacing.small
+	readonly property int tabIndicatorSpacing: ZUtils.snap(Tokens.spacing.small, root)
 
-	implicitHeight: bar.implicitHeight + bar.anchors.topMargin + indicator.implicitHeight + indicator.anchors.topMargin + separator.implicitHeight
+	function snapLayoutHeight(v) {
+		const dpr = ZUtils.dprFor(root);
+		let h = Math.ceil(v);
+		while (Math.abs(h * dpr - Math.round(h * dpr)) > 1e-6)
+			++h;
+		return h;
+	}
+
+	implicitHeight: ZUtils.snap(bar.implicitHeight + bar.anchors.topMargin + indicator.implicitHeight + indicator.anchors.topMargin + separator.implicitHeight, root)
 
 	TabBar {
 		id: bar
@@ -31,9 +41,11 @@ Item {
 		currentIndex: root.screenState.dashboardTab
 		onCurrentIndexChanged: root.screenState.dashboardTab = currentIndex
 
-		implicitHeight: contentHeight
+		topPadding: 0
+		bottomPadding: 0
+		implicitHeight: implicitContentHeight
 		background: null
-		contentItem: RowLayout {
+		contentItem: SnapLayout {
 			spacing: 0
 
 			Repeater {
@@ -116,10 +128,13 @@ Item {
 		readonly property bool current: TabBar.tabBar.currentItem === this
 
 		Layout.fillWidth: true
-		Layout.preferredWidth: 1 // Uniform width across all tabs
+		Layout.fillHeight: true
+		Layout.preferredWidth: 1
 		implicitWidth: implicitContentWidth
 		implicitHeight: implicitContentHeight
 		background: null
+		topPadding: 0
+		bottomPadding: 0
 
 		contentItem: CustomMouseArea {
 			id: mouse
@@ -131,8 +146,8 @@ Item {
 					root.screenState.dashboardTab = Math.max(root.screenState.dashboardTab - 1, 0);
 			}
 
-			implicitWidth: Math.max(icon.width, label.width)
-			implicitHeight: icon.height + label.height
+			implicitWidth: Math.max(icon.implicitWidth, label.implicitWidth)
+			implicitHeight: snapLayout.implicitHeight
 
 			hoverEnabled: true
 			cursorShape: Qt.PointingHandCursor
@@ -146,39 +161,49 @@ Item {
 				anchors.left: parent.left
 				anchors.right: parent.right
 				anchors.verticalCenter: parent.verticalCenter
-				implicitHeight: parent.height + root.tabIndicatorSpacing * 2
+				anchors.alignWhenCentered: false
+				implicitHeight: ZUtils.snap(parent.height + Tokens.sizes.dashboard.tabIndicatorSpacing * 2, stateLayer)
 
 				radius: Tokens.rounding.medium
 				color: tab.current ? Colors.palette.m3primary : Colors.palette.m3onSurface
-				onClicked: root.screenState.dashboardTab = tab.TabBar.index
-			}
-
-			MaterialIcon {
-				id: icon
-
-				anchors.horizontalCenter: parent.horizontalCenter
-				anchors.bottom: label.top
-
-				text: tab.iconName
-				color: tab.current ? Colors.palette.m3primary : Colors.palette.m3onSurfaceVariant
-				fill: tab.current ? 1 : 0
-				fontStyle: Tokens.font.icon.medium
-
-				Behavior on fill {
-					Anim {
-						type: Anim.DefaultEffects
-					}
+				onClicked: {
+					root.screenState.dashboardTab = tab.TabBar.index;
 				}
 			}
 
-			CustomText {
-				id: label
+			SnapLayout {
+				id: snapLayout
+				anchors.fill: parent
+				spacing: 0
+				orientation: Qt.Vertical
 
-				anchors.horizontalCenter: parent.horizontalCenter
-				anchors.bottom: parent.bottom
+				MaterialIcon {
+					id: icon
 
-				text: tab.text
-				color: tab.current ? Colors.palette.m3primary : Colors.palette.m3onSurfaceVariant
+					text: tab.iconName
+					color: tab.current ? Colors.palette.m3primary : Colors.palette.m3onSurfaceVariant
+					fill: tab.current ? 1 : 0
+					fontStyle: Tokens.font.icon.medium
+
+					Layout.fillHeight: true
+					Layout.alignment: Qt.AlignHCenter
+
+					Behavior on fill {
+						Anim {
+							type: Anim.DefaultEffects
+						}
+					}
+				}
+
+				CustomText {
+					id: label
+
+					text: tab.text
+					color: tab.current ? Colors.palette.m3primary : Colors.palette.m3onSurfaceVariant
+
+					Layout.fillHeight: true
+					Layout.alignment: Qt.AlignHCenter
+				}
 			}
 		}
 	}