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Traditionally, WMs unmap windows when minimizing them, and map them when restoring them or wanting to show them for other reasons, like upon creation. However, as metacity morphed into mutter, we optionally chose to keep windows mapped for the lifetime of the window under the user option "live-window-previews", which makes the code keep windows mapped so it can show window preview for minimized windows in other places, like Alt-Tab and Expose. I removed this preference two years ago mechanically, by removing all the if statements, but never went through and cleaned up the code so that windows are simply mapped for the lifetime of the window -- the "architecture" of the old code that maps and unmaps on show/hide was still there. Remove this now. The one case we still need to be careful of is shaded windows, in which we do still unmap the client window. In the future, we might want to show previews of shaded windows in the overview and Alt-Tab. In that we'd also keep shaded windows mapped, and could remove all unmap logic, but we'd need a more complex method of showing the shaded titlebar, such as using a different actor. At the same time, simplify the compositor interface by removing meta_compositor_window_[un]mapped API, and instead adding/removing the window on-demand. https://bugzilla.gnome.org/show_bug.cgi?id=720631 |
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| .. | ||
| man | ||
| reference | ||
| .cvsignore | ||
| code-overview.txt | ||
| compositor-control.txt | ||
| dialogs.txt | ||
| how-constraints-works.txt | ||
| how-to-get-focus-right.txt | ||
| Makefile.am | ||
| strut-and-related-updating.txt | ||
| theme-format.txt | ||