I noticed that the taskbar plugin creates a GtkToggleButton for every task.
Since every button has the same geometry, is spaced uniformly and only one can
be acted upon at a time, this seems redundant (especially considering that each
button is actually a container for more widgets).
Would the LXDE community be interested if I implemented a version that uses a
single widget (not counting the pop-up menus and tool-tips) that manually draws
all the buttons. I already made a little demo to gauge how difficult it would
be (not very). It would look and act exactly the same as the current taskbar
(including proper tool-tips, raising a window with drag-and-drop and focus
support for when lxpanel is made keyboard navigable), except icons will be
drawn with half opacity for minimized windows and will be clipped inside the
button instead of spilling out to the right when the buttons are too short to
encompass the icon (from e.g. having too many windows open), and to activate a
button, it will have to be pressed and then released while the cursor is still
over the button, like everywhere else. I have been using the source code for
GtkButton as a guide to make sure the buttons will look right regardless of
widget theme.
One internal change will be that the list of open windows will managed by a
single object shared between each taskbar instance (which is especially useful
with my recent multi-monitor patch).
The only issue I foresee is support for older versions of GTK and related
libraries. Either someone else will have to update the code for that or someone
will have to offer me a little guidance on it.
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