de-dupe and cleanup

quickshell/Common/ConnectorGeometry.js

@@ -0,0 +1,64 @@
+.pragma library
+
+// Geometry for connected-frame arc connectors.
+// `barSide` is one of "top" | "bottom" | "left" | "right" — the edge where the
+// host bar/dock sits. `placement` is "left" (start) or "right" (end) of the
+// body's far edge. `radius` is the connector's arc radius. `spacing` is the
+// gap between the host edge and the body.
+
+function isVertical(barSide) {
+    return barSide === "left" || barSide === "right";
+}
+
+function connectorWidth(barSide, spacing, radius) {
+    return isVertical(barSide) ? (spacing + radius) : radius;
+}
+
+function connectorHeight(barSide, spacing, radius) {
+    return isVertical(barSide) ? radius : (spacing + radius);
+}
+
+function seamX(barSide, baseX, bodyWidth, placement) {
+    if (!isVertical(barSide))
+        return placement === "left" ? baseX : baseX + bodyWidth;
+    return barSide === "left" ? baseX : baseX + bodyWidth;
+}
+
+function seamY(barSide, baseY, bodyHeight, placement) {
+    if (barSide === "top")
+        return baseY;
+    if (barSide === "bottom")
+        return baseY + bodyHeight;
+    return placement === "left" ? baseY : baseY + bodyHeight;
+}
+
+function connectorX(barSide, baseX, bodyWidth, placement, spacing, radius) {
+    var s = seamX(barSide, baseX, bodyWidth, placement);
+    var w = connectorWidth(barSide, spacing, radius);
+    if (!isVertical(barSide))
+        return placement === "left" ? s - w : s;
+    return barSide === "left" ? s : s - w;
+}
+
+function connectorY(barSide, baseY, bodyHeight, placement, spacing, radius) {
+    var s = seamY(barSide, baseY, bodyHeight, placement);
+    var h = connectorHeight(barSide, spacing, radius);
+    if (barSide === "top")
+        return s;
+    if (barSide === "bottom")
+        return s - h;
+    return placement === "left" ? s - h : s;
+}
+
+// Which corner of the connector's bounding rect hosts the concave arc that
+// carves into the body. Used for arc-sweep orientation.
+function arcCorner(barSide, placement) {
+    var left = placement === "left";
+    if (barSide === "top")
+        return left ? "bottomLeft" : "bottomRight";
+    if (barSide === "bottom")
+        return left ? "topLeft" : "topRight";
+    if (barSide === "left")
+        return left ? "topRight" : "bottomRight";
+    return left ? "topLeft" : "bottomLeft";
+}