feat: give Parent Call a mark that says what it does

Three marks were put on a real panel and judged at the size the bar
actually draws them. A bell sat inches from Plasma's own notification
bell and meant something entirely different. A handset with an outgoing
arrow read as a telephone feature. Breeze has people and it has
telephones and the two never meet, so this is drawn in Breeze's language
instead: an adult, a child, and one small speech bubble, on Breeze's
22-unit grid with its ColorScheme-Text class, so it recolours with the
session and needs no second file for the light theme.

Quick Launch carries it. The Icon widget copies the entry into the user's
home so an update could never change it; a task manager reads the entry
live but also shows every running window, which filled the auxiliary
corner with the lesson's tasks.

One defect found on the way, and it affected the Wonder Ink icon that is
already shipping: gdk-pixbuf recognises an SVG by sniffing the first
bytes, and a licence-length comment above the opening tag pushes it out
of that window. Every GTK program reported "couldn't recognize the image
file format" while Qt rendered the same file happily. The comments live
inside <svg> now.

Co-Authored-By: Claude Opus 5 <[email protected]>

config/icons/ekklesia-parent-call.svg

@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 22 22" width="22" height="22">
+  <!-- The comment lives inside <svg>, not above it. gdk-pixbuf
+       recognises an SVG by sniffing the first bytes of the file, and a
+       licence-length comment before the opening tag pushes it out of
+       that window: every GTK program then reports "couldn't recognize
+       the image file format" while Qt renders it happily. Measured on
+       both of the classroom's own icons. -->
+  <!-- Parent Call.
+  
+       Drawn in Breeze's own language rather than picked from it, because
+       Breeze has no icon that means "fetch this child's grown-up". It has
+       people, and it has telephones, and the two never meet. A bare handset
+       was tried first and read as a telephone feature; a bell was tried
+       before that and read as Plasma's notifications, which sit in the same
+       bar.
+  
+       So: an adult and a child, and one small speech bubble. Same 22-unit
+       grid, same single path style, same ColorScheme-Text class, so it
+       recolours with the session exactly as a Breeze icon does and follows
+       the light and dark themes without a second file. -->
+  <defs>
+    <style type="text/css">.ColorScheme-Text { color: #fcfcfc; }</style>
+  </defs>
+  <g class="ColorScheme-Text" style="fill:currentColor;fill-opacity:1;stroke:none">
+    <!-- One small speech bubble, top right, clear of both heads: somebody
+         is being asked for. It is the only round thing up there, so it
+         cannot be counted as a third person. -->
+    <path d="M16.6 1.2c-2.4 0-4.4 1.3-4.4 3s2 3 4.4 3c.3 0 .6 0 .9-.1l2.3 1.2-.5-1.7c1-.5 1.6-1.4
+             1.6-2.4 0-1.7-2-3-4.3-3z"/>
+    <!-- The adult: taller, at the back, on the left. -->
+    <circle cx="6.6" cy="8.2" r="3.1"/>
+    <path d="M6.6 12.3c-2.9 0-5.1 2.1-5.1 4.9V19h10.2v-1.8c0-2.8-2.2-4.9-5.1-4.9z"/>
+    <!-- The child: smaller, in front, on the right. -->
+    <circle cx="14.6" cy="12.4" r="2.2"/>
+    <path d="M14.6 15.3c-2.1 0-3.6 1.5-3.6 3.3V19h7.2v-.4c0-1.8-1.5-3.3-3.6-3.3z"/>
+  </g>
+</svg>

config/icons/ekklesia-wonderink.svg

@@ -1,4 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg" width="128" height="128" viewBox="0 0 128 128">
+  <!-- The comment lives inside <svg>, not above it. gdk-pixbuf
+       recognises an SVG by sniffing the first bytes of the file, and a
+       licence-length comment before the opening tag pushes it out of
+       that window: every GTK program then reports "couldn't recognize
+       the image file format" while Qt renders it happily. Measured on
+       both of the classroom's own icons. -->
   <!-- Wonder Ink.
   
        A stand-in for the product's own mark, which the classroom does not
@@ -7,7 +14,6 @@
        a monochrome glyph on a bar is read as a decoration and not as an
        application. Somebody asked whether the old browser glyph meant "the
        Internet". A tile with its own colour does not get that question. -->
-<svg xmlns="http://www.w3.org/2000/svg" width="128" height="128" viewBox="0 0 128 128">
   <defs>
     <linearGradient id="tile" x1="0" y1="0" x2="1" y2="1">
       <stop offset="0" stop-color="#4FB3A8"/>

config/plasma/applications/ekklesia-parent-call.desktop

@@ -2,16 +2,15 @@
 Type=Application
 Name=Parent Call
 Comment=Ask the sanctuary to call a child's parent to this room
-# Breeze's own, and deliberately not a bell.
+# Drawn for this, in Breeze's language, because Breeze has no icon that
-#
+# means "fetch this child's grown-up". Two marks were tried and rejected
-# The previous mark was a bell, which sat two inches from Plasma's
+# on a real panel first: a bell, which sat inches from Plasma's own
-# notification bell in the same bar and meant something entirely
+# notification bell in the same bar, and a handset with an outgoing
-# different. A handset with an outgoing arrow cannot be mistaken for an
+# arrow, which read as a telephone feature. This one is an adult, a
-# alert: it reads as placing a call, and the arrow says the call leaves
+# child, and one small speech bubble. It uses Breeze's ColorScheme-Text
-# this room. No stock Breeze icon combines a person with a call, so the
+# class, so it recolours with the session and needs no second file for
-# unambiguous half was chosen over the half that could be read as user
+# the light theme.
-# settings — which is what two grey people on a panel look like.
+Icon=ekklesia-parent-call
-Icon=call-outgoing
 Exec=/usr/local/bin/classroom-parent-call
 Terminal=false
 Categories=Utility;

config/plasma/lookandfeel/contents/layouts/org.kde.plasma.desktop-layout.js

@@ -41,29 +41,29 @@ panel.opacity = "adaptive";
 
 // LEFT — auxiliary. Parent Call is not one of the room's applications and
 // is deliberately not in the row with them.
-// A task manager holding one launcher, not the Icon widget.
+// Quick Launch: a launcher, and only a launcher.
 //
-// The Icon widget copies the desktop entry into the user's home and uses
+// Two other widgets were tried on a real panel. The Icon widget copies
-// the copy, so a classroom that had already run would keep the old icon
+// the desktop entry into the user's home and uses the copy, so an update
-// and the old command for ever — an update could never change either.
+// could never change the icon or the command — it kept showing a bell out
-// Measured: it kept showing a bell out of a package that no longer
+// of a package that no longer contained one. A task manager reads
-// contains one. Quick Launch would also do, but Debian does not ship it.
+// /usr/share/applications live, which fixes that, but a task manager also
+// shows every running window, so the auxiliary corner filled up with the
+// lesson's tasks.
 //
-// This applet reads /usr/share/applications live, which is what an OTA
+// Quick Launch reads the entry live and shows nothing but the button.
-// update writes to, and it costs nothing extra: the classroom already
+var parentCall = panel.addWidget("org.kde.plasma.quicklaunch");
-// runs one for the applications.
-var parentCall = panel.addWidget("org.kde.plasma.icontasks");
 parentCall.currentConfigGroup = ["General"];
-parentCall.writeConfig("launchers", "applications:ekklesia-parent-call.desktop");
+// A file URL, not applications:. Quick Launch resolves the entry itself
-parentCall.writeConfig("groupingStrategy", 0);
+// and does not copy it, so the path is a live reference to what the
-parentCall.writeConfig("showOnlyCurrentDesktop", false);
+// package installs.
-parentCall.writeConfig("showOnlyCurrentActivity", false);
+parentCall.writeConfig(
-parentCall.writeConfig("showOnlyCurrentScreen", false);
+    "launcherUrls",
-parentCall.writeConfig("minimizeActiveTaskOnClick", false);
+    "file:///usr/share/applications/ekklesia-parent-call.desktop"
-parentCall.writeConfig("fill", false);
+);
-parentCall.writeConfig("maxStripes", 1);
+parentCall.writeConfig("showLauncherNames", false);
-parentCall.writeConfig("wheelEnabled", false);
+parentCall.writeConfig("enablePopup", false);
-parentCall.writeConfig("showToolTips", true);
+parentCall.writeConfig("maxSectionCount", 1);
 
 var leftGap = panel.addWidget("org.kde.plasma.panelspacer");
 leftGap.currentConfigGroup = ["General"];

packaging/debian/control.template

@@ -4,7 +4,7 @@ Section: misc
 Priority: optional
 Architecture: amd64
 Maintainer: Ekklesia
-Depends: plasma-desktop, plasma-workspace, kwin-wayland, plasma-nm, plasma-pa, sddm, dbus-user-session, xwayland, fonts-dejavu, fonts-noto, network-manager, pipewire, pipewire-audio, wireplumber, pulseaudio-utils, cups, cups-client, cups-filters, foomatic-db-compressed-ppds, python3-gi, python3-gi-cairo, gir1.2-gtk-3.0, gir1.2-gtklayershell-0.1, libnotify-bin, curl, gnupg, ca-certificates, python3-paho-mqtt
+Depends: plasma-desktop, plasma-workspace, kwin-wayland, plasma-nm, plasma-pa, plasma-widgets-addons, sddm, dbus-user-session, xwayland, fonts-dejavu, fonts-noto, network-manager, pipewire, pipewire-audio, wireplumber, pulseaudio-utils, cups, cups-client, cups-filters, foomatic-db-compressed-ppds, python3-gi, python3-gi-cairo, gir1.2-gtk-3.0, gir1.2-gtklayershell-0.1, libnotify-bin, curl, gnupg, ca-certificates, python3-paho-mqtt
 Recommends: vlc
 Conflicts: plasma-welcome, plasma-discover, kdeconnect, kup-backup
 Description: Ekklesia managed classroom environment
@@ -14,6 +14,11 @@ Description: Ekklesia managed classroom environment
  left here is the church's own subject matter — Wonder Ink, the browser,
  the DVD player, the printer, the audio policy and the updater.
  .
+ plasma-widgets-addons is here for one widget: Quick Launch, which is
+ the only stock way to put a single launcher on the panel that reads
+ /usr/share/applications live. The Icon widget copies the entry into the
+ user's home, so an update could never change it.
+ .
  python3-gi and gtk-layer-shell are still here because the DVD player
  draws its own loading cover and control bar as layer-shell surfaces.
  They are no longer here for a dock.

tools/lab/Dockerfile.plasma

@@ -88,3 +88,7 @@ RUN DEBIAN_FRONTEND=noninteractive apt-get purge -y \
       plasma-discover-backend-fwupd kdeconnect kup-backup \
  && apt-get autoremove -y \
  && rm -rf /var/lib/apt/lists/*
+
+# Quick Launch, for the one auxiliary button on the panel.
+RUN apt-get update && apt-get install -y --no-install-recommends plasma-widgets-addons \
+ && rm -rf /var/lib/apt/lists/*

tools/lab/parent-call-rig

@@ -97,7 +97,9 @@ ENV
     sleep 4
 
     # The room points at the loopback broker, never at the church's.
-    inlab python3 - <<'PY'
+    # docker exec needs -i or the heredoc reaches nothing at all, which is
+    # how this silently left the room pointing nowhere.
+    docker exec -i "$NAME" python3 - <<'PY'
 import pathlib
 p = pathlib.Path("/etc/ekklesia-classroom/device.conf")
 t = p.read_text()