From 47770eda6f77a6b1f4d64dfe05a61e75b9ed7ee7 Mon Sep 17 00:00:00 2001
From: James H <hodgyj@outlook.com>
Date: Sun, 28 Nov 2021 11:26:01 +0000
Subject: [PATCH] Add create_gnome_slideshow

---
 README.md                 |  16 ++++-
 create_gnome_slideshow.py | 121 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 136 insertions(+), 1 deletion(-)
 create mode 100644 create_gnome_slideshow.py

diff --git a/README.md b/README.md
index 7eb04b7..3897503 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,17 @@
 # Python Scripts
 
-Useful Python scripts :)
\ No newline at end of file
+Useful Python scripts :)
+
+## Scripts
+### create_gnome_slideshow.py
+Usage:
+```bash
+python3 create_gnome_slideshow.py [-r] [--name SlideshowName] [--xmlpath /path/to/save/xml] /path/to/images/folder
+```
+
+This script generates the XML files required to add a slideshow of images to GNOME desktop:
+- An XML file declaring the slideshow name and options
+    - This will always be created at `$HOME/.local/share/gnome-background-properties/slideshow-name.xml`
+- An XML file containin the images to use.
+    - This is created at the `xmlpath` argument location
+    - It will create an entry for all of the images in the given folder
\ No newline at end of file
diff --git a/create_gnome_slideshow.py b/create_gnome_slideshow.py
new file mode 100644
index 0000000..08e0331
--- /dev/null
+++ b/create_gnome_slideshow.py
@@ -0,0 +1,121 @@
+import argparse
+import os
+
+import xml.etree.ElementTree as ET
+
+ALLOWED_EXTENSIONS = [".jpg", ".jpeg", ".png"]
+DEFAULT_DURATION = 120
+DEFAULT_TRANSITION_DURATION = 0.5
+GNOME_BACKGROUNDS_PATH = "$HOME/.local/share/gnome-background-properties"
+
+def getFiles(path : str, recursive : bool) -> list:
+    files = []
+    with os.scandir(path) as it:
+        for entry in it:
+            if entry.is_file():
+                if (os.path.splitext(entry.name)[1] in ALLOWED_EXTENSIONS):
+                    files.append(f"{path}/{entry.name}")
+            elif entry.is_dir() and recursive:
+                files.append(getFiles(f"{path}/{entry.name}"))
+
+    return files
+
+def main():
+    parser = argparse.ArgumentParser(description="Generate the XML files required to add a slideshow of images to GNOME desktop.")
+    parser.add_argument("path", metavar="PATH", type=str, help="Path to the images directory to create a slideshow for")
+    parser.add_argument("--recursive", "-r", action="store_true", help="Recursively search subdirectories for images")
+    parser.add_argument("--name", "-n", type=str, help="Name of the slideshow")
+    parser.add_argument("--xmlpath", type=str, help="Path to save the XML file containing the list of image files. (default: stored in the images folder)")
+    parser.add_argument("--duration", "-d", type=int, help=f"Duration between each image in seconds (default: {DEFAULT_DURATION})")
+    parser.add_argument("--transduration", "-t", type=int, help=f"Duration of transition between images (default: {DEFAULT_TRANSITION_DURATION})")
+
+    args = parser.parse_args()
+
+    imagepath = os.path.abspath(args.path)
+    xmlpath = args.xmlpath
+    slideshowname = args.name
+    recursive = args.recursive
+    duration = args.duration
+    transduration = args.transduration
+
+    gnomepath = os.path.abspath(os.path.expandvars(GNOME_BACKGROUNDS_PATH))
+
+    if slideshowname == None:
+        slideshowname = os.path.dirname(imagepath).split("/")[-1]
+
+    if xmlpath == None:
+        xmlpath = imagepath + f"/{slideshowname}.xml"
+
+    if duration == None:
+        duration = DEFAULT_DURATION
+
+    if transduration == None:
+        transduration = DEFAULT_TRANSITION_DURATION
+
+    print(f"imagepath    : {imagepath}")
+    print(f"xmlpath      : {xmlpath}")
+    print(f"slideshowname: {slideshowname}")
+    print(f"recursive    : {recursive}")
+    print(f"duration     : {duration}")
+    print(f"transduration: {transduration}")
+
+    files = getFiles(imagepath, recursive)
+
+    if not os.path.exists(gnomepath):
+        os.makedirs(gnomepath)
+
+    with open(f"{gnomepath}/{slideshowname}.xml", "wb") as xmlfile:
+        # Generate XML file
+        wallpapers = ET.Element("wallpapers")
+        wallpaper = ET.SubElement(wallpapers, "wallpaper", {
+            "deleted": "false"
+        })
+
+        name = ET.SubElement(wallpaper, "name")
+        name.text = slideshowname
+
+        filename = ET.SubElement(wallpaper, "filename")
+        filename.text = xmlpath
+
+        options = ET.SubElement(wallpaper, "options")
+        options.text = "zoom"
+
+        xmlfile.write('<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE wallpapers SYSTEM "gnome-wp-list.dtd">'.encode("UTF-8"))
+
+        xmlfile.write(ET.tostring(wallpapers))
+
+    with open(xmlpath, "wb") as xmlfile:
+        background = ET.Element("background")
+
+        for i in range(len(files)):
+            file = files[i]
+
+            tofile = files[(i + 1) % len(files)]
+            fromfile = file
+
+            static = ET.SubElement(background, "static")
+            durationelement = ET.SubElement(static, "duration")
+            durationelement.text = str(duration)
+            fileelement = ET.SubElement(static, "file")
+            fileelement.text = file
+
+            transition = ET.SubElement(background, "transition")
+            transdurationelement = ET.SubElement(transition, "duration")
+            transdurationelement.text = str(transduration)
+            fromelement = ET.SubElement(transition, "from")
+            fromelement.text = fromfile
+            toelement = ET.SubElement(transition, "to")
+            toelement.text = tofile
+
+        xmlfile.write('<?xml version="1.0" ?>'.encode("UTF-8"))
+
+        xmlfile.write(ET.tostring(background))
+
+
+
+
+
+
+
+if __name__ == "__main__":
+    main()