Workspace launcher gives no feedback on Activate or during Expo

[asmoore82]

Steps to reproduce: (With Workspaces Enabled)

1. Activate Expo by either clicking Workspace Launcher or using Super+s
2. Navigate around in Expo with either keyboard arrows or mousewheel

Expectations:
At first glance, one might hope that the Workspace Launcher would update "live" side by side with expo. But if you dig into Expo a little you will find it has a feature where the viewport switch doesn't actually happen until the Expo is done. The live Expo view is just a preview which is also why the launcher triangles don't change to hollow.

A more realistic expectation would be just some sort of "Activated" Workspace Switcher icon.

Actual Results:
The Workspace Launcher is "frozen" at the previous location and updates immediately when the Expo is done. The problem is slightly compounded by the fact that exiting Expo via shortcut Super+s will swtich to the Workspace that is under the mouse regardless of which one was highlighted. The Escape key however, will always return to the previous workspace that the launcher was hinting at.

[asmoore82 (asmoore82)]

Related topic: https://lists.launchpad.net/unity-design/msg05655.html

<quote>I just had a quick thought. It would be very nice if the workspace
switcher button on the launcher appeared pressed whenever the user was
in Expo (either through pressing the button or via keyboard shortcut).

It would add a little bit of polish.</quote>

[asmoore82 (asmoore82)]

For anyone trying to see the patch in action, you must drop the icon asset into an appropriate path and you might have to run gtk-update-icon-cache

[asmoore82 (asmoore82)]

On a side note, if we can get the empty workspace icon asset shipped, it should be the default icon for when the launcher cannot cope with a != 2x2 setup.

[asmoore82 (asmoore82)]

Same idea but a little spicier.