diff --git a/src/Actions.ts b/src/Actions.ts
index 0b9a495..41621c8 100644
--- a/src/Actions.ts
+++ b/src/Actions.ts
@@ -166,89 +166,13 @@ namespace Actions {
 
             columnWidthIncrease: () => {
                 world.doIfTiledFocused(false, (clientManager, desktopManager, window, column, grid) => {
-                    const desktop = grid.desktop;
-                    const visibleRange = desktop.getCurrentVisibleRange();
-                    if(!column.isVisible(visibleRange, true) || column.getWidth() >= column.getMaxWidth()) {
-                        return;
-                    }
-
-                    let leftVisibleColumn = grid.getLeftmostVisibleColumn(visibleRange, true);
-                    let rightVisibleColumn = grid.getRightmostVisibleColumn(visibleRange, true);
-                    if (leftVisibleColumn === null || rightVisibleColumn === null) {
-                        console.assert(false); // should at least see self
-                        return;
-                    }
-
-                    const leftSpace = leftVisibleColumn.getLeft() - visibleRange.getLeft();
-                    const rightSpace = visibleRange.getRight() - rightVisibleColumn.getRight();
-
-                    const newWidth = findNextStep(
-                        [
-                            visibleRange.getWidth(),
-                            column.getWidth() + config.manualResizeStep,
-                            column.getWidth() + leftSpace + rightSpace,
-                            column.getWidth() + leftSpace + rightSpace + leftVisibleColumn.getWidth() + grid.config.gapsInnerHorizontal,
-                            column.getWidth() + leftSpace + rightSpace + rightVisibleColumn.getWidth() + grid.config.gapsInnerHorizontal,
-                        ],
-                        width => width - column.getWidth(),
-                    )
-                    if (newWidth === undefined) {
-                        return;
-                    }
-
-                    column.setWidth(newWidth, true);
-                    desktop.scrollCenterVisible(column);
-                    desktop.onLayoutChanged();
-                    desktop.autoAdjustScroll();
+                    config.columnResizer.increaseWidth(column, config.manualResizeStep);
                 });
             },
 
             columnWidthDecrease: () => {
                 world.doIfTiledFocused(false, (clientManager, desktopManager, window, column, grid) => {
-                    const desktop = grid.desktop;
-                    const visibleRange = desktop.getCurrentVisibleRange();
-                    if(!column.isVisible(visibleRange, true) || column.getWidth() <= column.getMinWidth()) {
-                        return;
-                    }
-
-                    const leftVisibleColumn = grid.getLeftmostVisibleColumn(visibleRange, true);
-                    const rightVisibleColumn = grid.getRightmostVisibleColumn(visibleRange, true);
-                    if (leftVisibleColumn === null || rightVisibleColumn === null) {
-                        console.assert(false); // should at least see self
-                        return;
-                    }
-
-                    let leftOffScreenColumn = grid.getPrevColumn(leftVisibleColumn);
-                    if (leftOffScreenColumn === column) {
-                        leftOffScreenColumn = null;
-                    }
-                    let rightOffScreenColumn = grid.getNextColumn(rightVisibleColumn);
-                    if (rightOffScreenColumn === column) {
-                        rightOffScreenColumn = null;
-                    }
-
-                    const visibleColumnsWidth = rightVisibleColumn.getRight() - leftVisibleColumn.getLeft();
-                    const unusedWidth = visibleRange.getWidth() - visibleColumnsWidth;
-                    const leftOffScreen = leftOffScreenColumn === null ? 0 : leftOffScreenColumn.getWidth() + grid.config.gapsInnerHorizontal - unusedWidth;
-                    const rightOffScreen = rightOffScreenColumn === null ? 0 : rightOffScreenColumn.getWidth() + grid.config.gapsInnerHorizontal - unusedWidth;
-
-                    const newWidth = findNextStep(
-                        [
-                            visibleRange.getWidth(),
-                            column.getWidth() - config.manualResizeStep,
-                            column.getWidth() - leftOffScreen,
-                            column.getWidth() - rightOffScreen,
-                        ],
-                        width => column.getWidth() - width,
-                    )
-                    if (newWidth === undefined) {
-                        return;
-                    }
-
-                    column.setWidth(newWidth, true);
-                    desktop.scrollCenterVisible(column);
-                    desktop.onLayoutChanged();
-                    desktop.autoAdjustScroll();
+                    config.columnResizer.decreaseWidth(column, config.manualResizeStep);
                 });
             },
 
@@ -399,21 +323,14 @@ namespace Actions {
         });
     }
 
-    function findNextStep(steps: number[], evaluate: (step: number) => number) {
-        let bestScore = Infinity;
-        let bestStep = undefined;
-        for (const step of steps) {
-            const score = evaluate(step);
-            if (score > 0 && score < bestScore) {
-                bestScore = score;
-                bestStep = step;
-            }
-        }
-        return bestStep;
-    }
-
     export type Config = {
         manualScrollStep: number,
         manualResizeStep: number,
+        columnResizer: ColumnResizer,
     };
+
+    export type ColumnResizer = {
+        increaseWidth(column: Column, step: number): void,
+        decreaseWidth(column: Column, step: number): void,
+    }
 }
diff --git a/src/behavior/columnResizer/ContextualResizer.ts b/src/behavior/columnResizer/ContextualResizer.ts
new file mode 100644
index 0000000..5134dae
--- /dev/null
+++ b/src/behavior/columnResizer/ContextualResizer.ts
@@ -0,0 +1,96 @@
+class ContextualResizer {
+    public increaseWidth(column: Column, step: number) {
+        const grid = column.grid;
+        const desktop = grid.desktop;
+        const visibleRange = desktop.getCurrentVisibleRange();
+        if(!column.isVisible(visibleRange, true) || column.getWidth() >= column.getMaxWidth()) {
+            return;
+        }
+
+        let leftVisibleColumn = grid.getLeftmostVisibleColumn(visibleRange, true);
+        let rightVisibleColumn = grid.getRightmostVisibleColumn(visibleRange, true);
+        if (leftVisibleColumn === null || rightVisibleColumn === null) {
+            console.assert(false); // should at least see self
+            return;
+        }
+
+        const leftSpace = leftVisibleColumn.getLeft() - visibleRange.getLeft();
+        const rightSpace = visibleRange.getRight() - rightVisibleColumn.getRight();
+
+        const newWidth = ContextualResizer.findNextStep(
+            [
+                visibleRange.getWidth(),
+                column.getWidth() + step,
+                column.getWidth() + leftSpace + rightSpace,
+                column.getWidth() + leftSpace + rightSpace + leftVisibleColumn.getWidth() + grid.config.gapsInnerHorizontal,
+                column.getWidth() + leftSpace + rightSpace + rightVisibleColumn.getWidth() + grid.config.gapsInnerHorizontal,
+            ],
+            width => width - column.getWidth(),
+        )
+        if (newWidth === undefined) {
+            return;
+        }
+
+        column.setWidth(newWidth, true);
+        desktop.scrollCenterVisible(column);
+    }
+
+    public decreaseWidth(column: Column, step: number) {
+        const grid = column.grid;
+        const desktop = grid.desktop;
+        const visibleRange = desktop.getCurrentVisibleRange();
+        if(!column.isVisible(visibleRange, true) || column.getWidth() <= column.getMinWidth()) {
+            return;
+        }
+
+        const leftVisibleColumn = grid.getLeftmostVisibleColumn(visibleRange, true);
+        const rightVisibleColumn = grid.getRightmostVisibleColumn(visibleRange, true);
+        if (leftVisibleColumn === null || rightVisibleColumn === null) {
+            console.assert(false); // should at least see self
+            return;
+        }
+
+        let leftOffScreenColumn = grid.getPrevColumn(leftVisibleColumn);
+        if (leftOffScreenColumn === column) {
+            leftOffScreenColumn = null;
+        }
+        let rightOffScreenColumn = grid.getNextColumn(rightVisibleColumn);
+        if (rightOffScreenColumn === column) {
+            rightOffScreenColumn = null;
+        }
+
+        const visibleColumnsWidth = rightVisibleColumn.getRight() - leftVisibleColumn.getLeft();
+        const unusedWidth = visibleRange.getWidth() - visibleColumnsWidth;
+        const leftOffScreen = leftOffScreenColumn === null ? 0 : leftOffScreenColumn.getWidth() + grid.config.gapsInnerHorizontal - unusedWidth;
+        const rightOffScreen = rightOffScreenColumn === null ? 0 : rightOffScreenColumn.getWidth() + grid.config.gapsInnerHorizontal - unusedWidth;
+
+        const newWidth = ContextualResizer.findNextStep(
+            [
+                visibleRange.getWidth(),
+                column.getWidth() - step,
+                column.getWidth() - leftOffScreen,
+                column.getWidth() - rightOffScreen,
+            ],
+            width => column.getWidth() - width,
+        )
+        if (newWidth === undefined) {
+            return;
+        }
+
+        column.setWidth(newWidth, true);
+        desktop.scrollCenterVisible(column);
+    }
+
+    private static findNextStep(steps: number[], evaluate: (step: number) => number) {
+        let bestScore = Infinity;
+        let bestStep = undefined;
+        for (const step of steps) {
+            const score = evaluate(step);
+            if (score > 0 && score < bestScore) {
+                bestScore = score;
+                bestStep = step;
+            }
+        }
+        return bestStep;
+    }
+}
diff --git a/src/behavior/columnResizer/RawResizer.ts b/src/behavior/columnResizer/RawResizer.ts
new file mode 100644
index 0000000..099b8b1
--- /dev/null
+++ b/src/behavior/columnResizer/RawResizer.ts
@@ -0,0 +1,9 @@
+class RawResizer {
+    public increaseWidth(column: Column, step: number) {
+        column.adjustWidth(step, true);
+    }
+
+    public decreaseWidth(column: Column, step: number) {
+        column.adjustWidth(-step, true);
+    }
+}
diff --git a/src/keyBindings/loader.ts b/src/keyBindings/loader.ts
index 5761a53..3e480c4 100644
--- a/src/keyBindings/loader.ts
+++ b/src/keyBindings/loader.ts
@@ -53,7 +53,12 @@ function registerNumKeyBindings(name: string, description: string, modifiers: st
 }
 
 function registerKeyBindings(world: World, config: Config) {
-    const actions = Actions.init(world, config);
+    const actions = Actions.init(world, {
+        manualScrollStep: config.manualScrollStep,
+        manualResizeStep: config.manualScrollStep,
+        columnResizer: config.scrollingCentered ? new RawResizer() : new ContextualResizer(),
+    });
+
     for (const binding of keyBindings) {
         registerKeyBinding(binding.name, binding.description, binding.defaultKeySequence, actions[binding.action]);
     }