kludges: use 3.38 computeLayout

kludges.js

@@ -379,8 +379,12 @@ function init() {
                                   });
     }
 
-    if (version[1] > 32 && version[1] < 37)
-        registerOverridePrototype(Workspace.UnalignedLayoutStrategy, 'computeLayout', computeLayout);
+    let layout = computeLayout
+    if (version[1] > 37)
+        layout = computeLayout338
+
+    if (version[1] > 32)
+        registerOverridePrototype(Workspace.UnalignedLayoutStrategy, 'computeLayout', layout);
 
     // Kill pinch gestures as they work pretty bad (especially when 3-finger swiping)
     registerOverrideProp(imports.ui.viewSelector, "PINCH_GESTURE_THRESHOLD", 0);
@@ -594,6 +598,63 @@ function computeLayout(windows, layout) {
     layout.gridHeight = gridHeight;
 }
 
+function computeLayout338(windows, layout) {
+    let numRows = layout.numRows;
+
+    let rows = [];
+    let totalWidth = 0;
+    for (let i = 0; i < windows.length; i++) {
+        let window = windows[i];
+        let s = this._computeWindowScale(window);
+        totalWidth += window.boundingBox.width * s;
+    }
+
+    let idealRowWidth = totalWidth / numRows;
+
+    // Sort windows vertically to minimize travel distance.
+    // This affects what rows the windows get placed in.
+    let sortedWindows = windows.slice();
+    sortedWindows.sort((a, b) => a.windowCenter.y - b.windowCenter.y);
+
+    let windowIdx = 0;
+    for (let i = 0; i < numRows; i++) {
+        let row = this._newRow();
+        rows.push(row);
+
+        for (; windowIdx < sortedWindows.length; windowIdx++) {
+            let window = sortedWindows[windowIdx];
+            let s = this._computeWindowScale(window);
+            let width = window.boundingBox.width * s;
+            let height = window.boundingBox.height * s;
+            row.fullHeight = Math.max(row.fullHeight, height);
+
+            // either new width is < idealWidth or new width is nearer from idealWidth then oldWidth
+            if (this._keepSameRow(row, window, width, idealRowWidth) || (i == numRows - 1)) {
+                row.windows.push(window);
+                row.fullWidth += width;
+            } else {
+                break;
+            }
+        }
+    }
+
+    let gridHeight = 0;
+    let maxRow;
+    for (let i = 0; i < numRows; i++) {
+        let row = rows[i];
+        this._sortRow(row);
+
+        if (!maxRow || row.fullWidth > maxRow.fullWidth)
+            maxRow = row;
+        gridHeight += row.fullHeight;
+    }
+
+    layout.rows = rows;
+    layout.maxColumns = maxRow.windows.length;
+    layout.gridWidth = maxRow.fullWidth;
+    layout.gridHeight = gridHeight;
+}
+
 const wmSettings = new Gio.Settings({schema_id: 'org.gnome.desktop.wm.preferences'});
 function _checkWorkspaces() {
     let workspaceManager = global.workspace_manager;