refactor(clients): describe behaviour in comments without naming Qt

clients/CMakeLists.txt

@@ -1,4 +1,4 @@
-# Qt-free clients of system services, one library per directory, linking only
+# Clients of system services, one library per directory, linking only
 # the toolkit's base library. They form the CutefishClients package; a
 # consumer asks for them by directory name:
 #   find_package(CutefishClients REQUIRED COMPONENTS appearance)

clients/audio/audioobject.cpp

@@ -54,7 +54,7 @@ static void updateChoice(std::vector<AudioObject::Choice>& list, AudioObject::Ch
     list.push_back(std::move(choice));
 }
 
-// A whole number, as QString::toUInt() and toInt() read one.
+// A whole number that fills the text: digits, with a leading '-' for a signed type.
 template<typename T>
 static bool parseNumber(const std::string& text, T& value)
 {

clients/display/displaytypes.h

@@ -6,7 +6,7 @@
 // Revision: 7acd40ddefff49c9d36144999aafdbb674dbd07a
 //
 // Adapted for Cutefish: plain value types for the compositor's versioned
-// session D-Bus tuples, without Ash, Mojo or Qt.
+// session D-Bus tuples, without Ash or Mojo.
 
 #pragma once
 

clients/display/outputmodel.cpp

@@ -38,7 +38,7 @@ struct Rect
     int height = 0;
 
     bool isEmpty() const { return width <= 0 || height <= 0; }
-    // At least one pixel in common, as QRect::intersects() has it.
+    // At least one pixel in common; an empty rectangle intersects nothing.
     bool intersects(const Rect& other) const
     {
         return !isEmpty() && !other.isEmpty() && x < other.x + other.width && other.x < x + width

clients/networkmanager/vpnschema.cpp

@@ -577,7 +577,7 @@ static const std::map<std::string, Table>& tables()
 
 static bool toBool(const std::string& value)
 {
-    // As a QVariant holding text reads as a bool.
+    // Text is true unless empty, "0" or "false" in any case.
     return !value.empty() && value != "0" && text::lower(value) != "false";
 }