Currently the layout is a bit visually busy and draws your focus all over the place. This commit makes the grid delegates use basically the same layout as the popular window delegates in the Overview and Present Windows effects:
- Centered window title
- Large app icon overlaid on the bottom center of the thumbnail
- close button only appears for the focused and/or hovered item
The result is better visual parse-ability, particularly for people who prefer to navigate by app icon rather than thumbnail image.
Part of the plasma-desktop#53 (closed) task.