After commit c64ab472b6, none of the thumbnail factories are
actually used anymore in BgColorsSource. Clean them up from
the code -- which is unused now, but will be kept for future
proofing purposes.
We do not download pictures anymore; the BgRecentSource
always copies the wallpapers before actually adding them,
and the BgWallpapersSource handles system-wide wallpapers,
which typically do not change.
Remove this dead code, and the unecessary widgets that were
kept to keep this code working -- essentially, a few boxes
around the previewers.
Add a recent section, composed by an additional GtkFlowBox and
a separator, and code to hide it when there are no recent
wallpapers.
To the popover menu, add a new "Remove Background" button that
is only visible when clicking on recent backgrounds.
BgRecentSource is a background source implementation that
keeps track of recently added backgrounds.
The backgrounds are copied to $(local data dir)/backgrounds,
which is monitored. When copying files to this folder, the
current time is added as prefix to avoid filename collisions.
This is a dedicate class to generate the preview. Not only
it renders the pixbuf of the wallpaper, but it also adds
lock screen or desktop frames on top of it. It also monitors
the time to keep the lock screen preview label always updated.
This is a major rework on how images are loaded and stored.
Unfortunately, this is so entangled that doing each change
as an atomic step is pretty much unfeasible.
The first major change is that BgSource now returns a GListStore
instead of a GtkListStore. This is necessary for us to bind it
to GtkFlowBox, and pretty much signals we're not using any of
the tree/icon views anymore.
Second, the thumbnail factory was moved to BgSource itself. We
only create factories for large thumbnails, so it's not needed
to handle each one of them individually.
At last, switch CcBackgroundChooser to GtkFlowBox, and adjust
the signals we connect to.
It will become essentially what CcBackgroundChooserDialog,
but without a dialog and organized differently. Right now,
it is as minimal as it could be and only shows wallpapers.
As we grow it, it may cover pictures and even colors.
Let gnome-settings-daemon know about intention to edit a job
so it does not show notification for this action as it
was initiated manually by user.
Do this via g-s-d's DBus method DoNotNotifyJob.
Sound devices may not have an origin, in that case we ended up with a
trailing " - " in the label which should not be there. Add a check that
the origin is non-null and not an empty string and only show the devices
description otherwise.
The `round_image()` function has the `icon_size` parameter, which is not
used by that function, because the size is determined from a pixbuf size.
Let's remove that redundant `icon_size` parameter.
