Gnome XML compatibility

[Beryesa]

Hi, I wondered, if we can make a pseudo-xdg standard for dynamic wallpapers by doing PRs to either side? Since this is an external plugin and gnome has it natively already (42+), I think this one can adapt easier to that instead of vice versa. An example file from fedora

<background>
  <starttime>
    <year>2023</year>
    <month>04</month>
    <day>18</day>
    <hour>8</hour>
    <minute>00</minute>
    <second>00</second>
  </starttime>
<!-- This animation will start at 8 AM. -->

<!-- We start with day at 8 AM. It will remain up for 10 hours. -->
<static>
<duration>36000.0</duration>
<file>/usr/share/backgrounds/f38/default/f38-01-day.png</file>
</static>

<!-- Day ended and starts to transition to night at 6 PM. The transition lasts for 2 hours, ending at 8 PM. -->
<transition type="overlay">
<duration>7200.0</duration>
<from>/usr/share/backgrounds/f38/default/f38-01-day.png</from>
<to>/usr/share/backgrounds/f38/default/f38-01-night.png</to>
</transition>

<!-- It's 8 PM, we're showing the night till 6 AM. -->
<static>
<duration>36000.0</duration>
<file>/usr/share/backgrounds/f38/default/f38-01-night.png</file>
</static>

<!-- It's 6 AM, and we're starting to transition to day. Transition completes at 8 AM. -->
<transition type="overlay">
<duration>7200.0</duration>
<from>/usr/share/backgrounds/f38/default/f38-01-night.png</from>
<to>/usr/share/backgrounds/f38/default/f38-01-day.png</to>
</transition>

</background>

Like that

Or should I bring this up to respective design teams instead? Thanks.

[Beryesa]

If we compare the two "Lakeside" config (please ignore the path :sweat_smile:)

<!-- Generated by com.github.maoschanz.DynamicWallpaperEditor -->
<background>
    <starttime>
        <year>2020</year>
        <month>1</month>
        <day>23</day>
        <hour>22</hour>
        <minute>0</minute>
        <second>0</second>
    </starttime>

    <static>
        <file>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-12.jpg</file>
        <duration>21595.0</duration>
    </static>

    <transition type="overlay">
        <duration>5.0</duration>
        <from>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-12.jpg</from>
        <to>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-1.jpg</to>
    </transition>

    <static>
        <file>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-1.jpg</file>
        <duration>3595.0</duration>
    </static>

    <transition type="overlay">
        <duration>5.0</duration>
        <from>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-1.jpg</from>
        <to>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-2.jpg</to>
    </transition>

    <static>
        <file>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-2.jpg</file>
        <duration>3595.0</duration>
    </static>

    <transition type="overlay">
        <duration>5.0</duration>
        <from>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-2.jpg</from>
        <to>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-3.jpg</to>
    </transition>

    <static>
        <file>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-3.jpg</file>
        <duration>3595.0</duration>
    </static>

    <transition type="overlay">
        <duration>5.0</duration>
        <from>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-3.jpg</from>
        <to>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-4.jpg</to>
    </transition>

    <static>
        <file>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-4.jpg</file>
        <duration>3595.0</duration>
    </static>

    <transition type="overlay">
        <duration>5.0</duration>
        <from>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-4.jpg</from>
        <to>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-5.jpg</to>
    </transition>

    <static>
        <file>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-5.jpg</file>
        <duration>7195.0</duration>
    </static>

    <transition type="overlay">
        <duration>5.0</duration>
        <from>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-5.jpg</from>
        <to>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-6.jpg</to>
    </transition>

    <static>
        <file>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-6.jpg</file>
        <duration>7195.0</duration>
    </static>

    <transition type="overlay">
        <duration>5.0</duration>
        <from>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-6.jpg</from>
        <to>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-7.jpg</to>
    </transition>

    <static>
        <file>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-7.jpg</file>
        <duration>7195.0</duration>
    </static>

    <transition type="overlay">
        <duration>5.0</duration>
        <from>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-7.jpg</from>
        <to>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-8.jpg</to>
    </transition>

    <static>
        <file>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-8.jpg</file>
        <duration>7195.0</duration>
    </static>

    <transition type="overlay">
        <duration>5.0</duration>
        <from>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-8.jpg</from>
        <to>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-9.jpg</to>
    </transition>

    <static>
        <file>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-9.jpg</file>
        <duration>7195.0</duration>
    </static>

    <transition type="overlay">
        <duration>5.0</duration>
        <from>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-9.jpg</from>
        <to>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-10.jpg</to>
    </transition>

    <static>
        <file>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-10.jpg</file>
        <duration>7195.0</duration>
    </static>

    <transition type="overlay">
        <duration>5.0</duration>
        <from>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-10.jpg</from>
        <to>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-11.jpg</to>
    </transition>

    <static>
        <file>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-11.jpg</file>
        <duration>7195.0</duration>
    </static>

    <transition type="overlay">
        <duration>5.0</duration>
        <from>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-11.jpg</from>
        <to>/home/ely/.local/share/backgrounds/gnome/Lakeside-timed/Lakeside-12.jpg</to>
    </transition>
</background>

{
  "Type": "solar",
  "Meta": [
    {
          "CrossFade": false,
          "Time": "00:00",
          "FileName": "dear-1.jpg"
        },
        {
          "CrossFade": false,
          "Time": "02:00",
          "FileName": "dear-2.jpg"
        },
        {
          "CrossFade": false,
          "Time": "04:00",
          "FileName": "dear-3.jpg"
        },
        {
          "CrossFade": false,
          "Time": "06:00",
          "FileName": "dear-4.jpg"
        },
        {
          "CrossFade": false,
          "Time": "08:00",
          "FileName": "dear-5.jpg"
        },
        {
          "CrossFade": false,
          "Time": "10:00",
          "FileName": "dear-6.jpg"
        },
        {
          "CrossFade": false,
          "Time": "12:00",
          "FileName": "dear-7.jpg"
        },
        {
          "CrossFade": false,
          "Time": "14:00",
          "FileName": "dear-8.jpg"
        },
        {
          "CrossFade": false,
          "Time": "16:00",
          "FileName": "dear-9.jpg"
        },
        {
          "CrossFade": false,
          "Time": "18:00",
          "FileName": "dear-10.jpg"
        },
        {
          "CrossFade": false,
          "Time": "20:00",
          "FileName": "dear-11.jpg"
        },
        {
          "CrossFade": false,
          "Time": "22:00",
          "FileName": "dear-12.jpg"
        }
  ]
}

It shouldn't be hard to achieve, I guess even I can make up a pr on that. But I'm here for the thoughts first!