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Phosphor
Qt6 / Wayland library suite for window-management tools
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Phosphor
Qt6 / Wayland library suite for window-management tools
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Opaque construction token — only SurfaceFactory can create instances of it. More...
#include <phosphor-layer/include/PhosphorLayer/Surface.h>
Opaque construction token — only SurfaceFactory can create instances of it.
Required as the first parameter of Surface's constructor so direct construction (new Surface(...)) is impossible without going through SurfaceFactory::create / createAs<T>, which are the only paths that run the factory-wide validation (role well-formedness, screen fallback, sharedEngine+engineProvider mutual exclusion).
Subclasses wishing to be constructible via SurfaceFactory::createAs<T> accept a CtorToken as the first argument of their own constructor and forward it to the base. Consumer code cannot instantiate a CtorToken directly (private ctor, only friended to SurfaceFactory), so subclasses cannot bypass the factory even by exposing a public constructor of their own.
1.9.8