Implementing transition option for swww

This addresses issue #20

waypaper/__main__.py

@@ -54,7 +54,7 @@ def run():
 
             if wallpaper is None:
                 continue
-            change_wallpaper(wallpaper, cf.fill_option, cf.color, cf.backend, monitor, txt)
+            change_wallpaper(wallpaper, cf.fill_option, cf.color, cf.backend, monitor, cf.swww_transition, txt)
             time.sleep(0.1)
         exit(0)
 

waypaper/app.py

@@ -412,7 +412,7 @@ def on_image_clicked(self, widget, path):
         print(self.txt.msg_path, self.cf.selected_wallpaper)
         self.cf.fill_option = self.fill_option_combo.get_active_text() or self.cf.fill_option
         change_wallpaper(self.cf.selected_wallpaper, self.cf.fill_option, self.cf.color,
-                         self.cf.backend, self.cf.selected_monitor, self.txt)
+                         self.cf.backend, self.cf.selected_monitor, self.cf.swww_transition, self.txt)
         self.cf.save()
 
 
@@ -439,7 +439,7 @@ def set_random_wallpaper(self):
         print(self.txt.msg_path, self.cf.selected_wallpaper)
         self.cf.fill_option = self.fill_option_combo.get_active_text() or self.cf.fill_option
         change_wallpaper(self.cf.selected_wallpaper, self.cf.fill_option, self.cf.color,
-                         self.cf.backend, self.cf.selected_monitor, self.txt)
+                         self.cf.backend, self.cf.selected_monitor, self.cf.swww_transition, self.txt)
         self.cf.save()
 
 
@@ -507,7 +507,7 @@ def on_key_pressed(self, widget, event):
             print(self.txt.msg_path, self.cf.selected_wallpaper)
             self.cf.fill_option = self.fill_option_combo.get_active_text() or self.cf.fill_option
             change_wallpaper(self.cf.selected_wallpaper, self.cf.fill_option, self.cf.color,
-                             self.cf.backend, self.cf.selected_monitor, self.txt)
+                             self.cf.backend, self.cf.selected_monitor, self.cf.swww_transition, self.txt)
             self.cf.save()
 
         # Prevent other default key handling:

waypaper/changer.py

@@ -4,7 +4,7 @@
 import time
 
 
-def change_wallpaper(image_path, fill_option, color, backend, monitor, txt):
+def change_wallpaper(image_path, fill_option, color, backend, monitor, transition, txt):
     """Run a system command to change the wallpaper depending on the backend"""
 
     try:
@@ -43,7 +43,8 @@ def change_wallpaper(image_path, fill_option, color, backend, monitor, txt):
             command = ["swww", "img", image_path]
             command.extend(["--resize", fill])
             command.extend(["--fill-color", color])
-            command.extend(["--transition-step", str(10)])
+            command.extend(["--transition-type", transition])
+            # command.extend(["--transition-step", str(30)])
             if monitor != "All":
                 command.extend(["--outputs", monitor])
             subprocess.Popen(command)

waypaper/config.py

@@ -7,7 +7,7 @@
 from platformdirs import user_config_path, user_pictures_path, user_cache_path
 
 from waypaper.aboutdata import AboutData
-from waypaper.options import FILL_OPTIONS, SORT_OPTIONS
+from waypaper.options import FILL_OPTIONS, SORT_OPTIONS, SWWW_TRANSITIONS
 
 class Config:
     """User configuration loaded from the config.ini file"""
@@ -19,6 +19,7 @@ def __init__(self):
         self.sort_option = "name"
         self.backend = "swaybg"
         self.color = "#ffffff"
+        self.swww_transition = "any"
         self.lang = "en"
         self.monitors = [self.selected_monitor]
         self.wallpaper = []
@@ -48,6 +49,9 @@ def read(self):
             self.sort_option = SORT_OPTIONS[0]
         self.backend = config.get("Settings", "backend", fallback=self.backend)
         self.color = config.get("Settings", "color", fallback=self.color)
+        self.swww_transition = config.get("Settings", "swww_transition", fallback=self.swww_transition)
+        if self.swww_transition not in SWWW_TRANSITIONS:
+            self.swww_transition = "any"
         self.lang = config.get("Settings", "language", fallback=self.lang)
         self.include_subfolders = config.getboolean("Settings", "subfolders", fallback=self.include_subfolders)
 
@@ -84,6 +88,7 @@ def save(self):
         config.set("Settings", "sort", self.sort_option)
         config.set("Settings", "backend", self.backend)
         config.set("Settings", "color", self.color)
+        config.set("Settings", "swww_transition", self.swww_transition)
         config.set("Settings", "language", self.lang)
         config.set("Settings", "subfolders", str(self.include_subfolders))
         config.set("Settings", "wallpaper", ",".join(self.wallpaper))

waypaper/options.py

@@ -14,3 +14,5 @@
         BACKEND_OPTIONS[3]: ['.gif', '.jpg', '.jpeg', '.png'],
         }
 
+SWWW_TRANSITIONS = ["none", "simple", "fade", "wipe",  "left", "right", "top", "bottom",
+                                    "wave", "grow", "center", "any", "outer", "random"]