Allow specifying window logos in the launch command

kitty/launch.py

@@ -172,6 +172,21 @@ Set the title for the newly created OS window. This title will override any
 titles set by programs running in kitty.
 
 
+--logo
+Path to a PNG image to use as the logo for the newly created window. See :opt:`window_logo_path`.
+
+
+--logo-position
+The position for the window logo. Only takes effect if :option:`--logo` is specified. See :opt:`window_logo_position`.
+
+
+--logo-alpha
+type=float
+default=-1
+The amount the window logo should be faded into the background.
+Only takes effect if :option:`--logo` is specified. See :opt:`window_logo_position`.
+
+
 --color
 type=list
 Change colors in the newly launched window. You can either specify a path to a .conf
@@ -399,5 +414,7 @@ def launch(
                 apply_colors(new_window, opts.color)
             if opts.keep_focus and active:
                 boss.set_active_window(active, switch_os_window_if_needed=True)
+            if opts.logo:
+                new_window.set_logo(opts.logo, opts.logo_position or '', opts.logo_alpha)
             return new_window
     return None

kitty/options/utils.py

@@ -649,11 +649,11 @@ def active_tab_title_template(x: str) -> Optional[str]:
     return None if x == 'none' else x
 
 
-def config_or_absolute_path(x: str) -> Optional[str]:
+def config_or_absolute_path(x: str, env: Optional[Dict[str, str]] = None) -> Optional[str]:
     if x.lower() == 'none':
         return None
     x = os.path.expanduser(x)
-    x = os.path.expandvars(x)
+    x = expandvars(x, env or {})
     if not os.path.isabs(x):
         x = os.path.join(config_dir, x)
     return x

kitty/rc/launch.py

@@ -40,6 +40,9 @@ class Launch(RemoteCommand):
     stdin_add_line_wrap_markers: Boolean indicating whether to add line wrap markers to stdin
     no_response: Boolean indicating whether to send back the window id
     marker: Specification for marker for new window, for example: "text 1 ERROR"
+    logo: Path to window logo
+    logo_position: Window logo position as string or empty string to use default
+    logo_alpha: Window logo alpha or -1 to use default
     self: Boolean, if True use tab the command was run in
     '''
 

kitty/state.c

@@ -1166,7 +1166,7 @@ PYWRAP1(set_window_logo) {
     PA("KKKsUf", &os_window_id, &tab_id, &window_id, &path, &position, &alpha);
     bool ok = false;
     WITH_WINDOW(os_window_id, tab_id, window_id);
-    ok = set_window_logo(window, path, bganchor(position), alpha, false);
+    ok = set_window_logo(window, path, PyObject_IsTrue(position) ? bganchor(position) : OPT(window_logo_position), (0 <= alpha && alpha <= 1) ? alpha : OPT(window_logo_alpha), false);
     END_WITH_WINDOW;
     if (ok) Py_RETURN_TRUE;
     Py_RETURN_FALSE;

kitty/window.py

@@ -1092,7 +1092,7 @@ class Window:
 
     def set_logo(self, path: str, position: str = 'bottom-right', alpha: float = 0.5) -> None:
         from .options.utils import config_or_absolute_path
-        path = config_or_absolute_path(path) or path
+        path = config_or_absolute_path(path, get_options().env) or path
         set_window_logo(self.os_window_id, self.tab_id, self.id, path, position, alpha)
 
     # actions {{{