I check if the content of the view is bigger than the visible part (which also means that the scroll bar is visible), if it's bigger, I make the search field visible.

Note that this resizes the view and can result in an endless loop, we've had a bunch of trouble with scrollbar-bound behavior (wallpaper dialog, window switcher), so be careful with that.

The Pause button looks quite small but perhaps it's the ToolButton adding a lot of padding; otherwise looking really nice! We do need Breeze printer icons (regular printer and laser printer).