How Can I change wallpaper from CLI?

[Nicolás Alvarez]

2012/9/5, Nicolás Alvarez <nicolas.alvarez at gmail.com>:
> 2012/9/5, Alexander Neundorf <neundorf at kde.org>:
>> On Wednesday 05 September 2012, Jeremy Whiting wrote:
>>> On Wed, Sep 5, 2012 at 11:30 AM, Alexander Neundorf <neundorf at kde.org>
>> wrote:
>>> > On Wednesday 05 September 2012, Shaun Reich wrote:
>>> >> On Wed, Sep 5, 2012 at 10:53 AM, Tomaz Canabrava <tcanabrava at kde.org>
>> wrote:
>>> >> > 2012/9/5 Weng Xuetian <wengxt at gmail.com>:
>>> >> >> On Wed, Sep 5, 2012 at 9:48 AM, kevinzhow <kevinchou.c at gmail.com>
>> wrote:
>>> >> >>> hello~
>>> >> >>>
>>> >> >>> Sorry to brother,I don not know which channel should i send this
>>> >> >>> mail exactly , so i send this mail to kde, kde-devel and
>>> >> >>> ode-core-devel, but i really need this help,  please
>>> >> >
>>> >> > This looks like the KDE Get Hot New Stuff for the desktop
>>> >> > wallpaper,
>>> >> > from your screenshoots.
>>> >> > why don't you create a backend for the GetHotNewStuff for your
>>> >> > wallpapers?
>>> >>
>>> >> there's more to it than just "a source for wallpapers" afict, so i
>>> >> don't think that's a valid solution.
>>> >
>>> > This should be possible using wget and some dbus calls, shouldn't it ?
>>> >
>>> > Alex
>>>
>>> No, I don't think any plasma containments expose their configuration on
>>> dbus.
>>
>> In KDE3 it was possible to set the wallpaper via dcop in kdesktop. So we
>> can't
>> do this anymore ?
>
> In the past, a desktop had a wallpaper. Now, a plasma desktop can have
> one or more desktop containments (activities) which may have any
> wallpaper plugin which may or may not have the concept of a static
> image that you can configure.

Apparently you can set a wallpaper like this:

function setWallpaperOnActivity(activity) {
    if (activity.wallpaperPlugin != "image") return false;
    activity.currentConfigGroup=["Wallpaper","image"];
    activity.writeConfig("wallpaper","/usr/share/wallpapers/Foobar");
}

(untested!)

But there seems to be no DBus method to run JS scripts in Plasma
without using the interactive console dialog...

-- 
Nicolás