Abstract: Described herein is a technology to facilitate designing or arranging a layout of a page. In one implementation, a tile-based page having one or more tiles forming a page layout is provided. The tile-based page includes a focus tile. In response to a user event to indicate a tile change in the page layout, a tile adjacent in the layout is determined. The tile adjacent is the minimum area to be shifted to effect the tile change. The tile is absorbed into an empty area and the changed layout is analyzed to determine if the tile-based page is a convex page.

Abstract: Described herein is a technology to facilitate designing or arranging a layout of a page. In one implementation, a tile-based page having one or more tiles forming a page layout is provided. The tile-based page includes a focus tile. In response to a user event to indicate a tile change in the page layout, a tile adjacent in the layout is determined. The tile adjacent is the minimum area to be shifted to effect the tile change. The tile is absorbed into an empty area and the changed layout is analyzed to determine if the tile-based page is a convex page.