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C++ platform: duration_until_next_timer_update and change return type of duration_since_start

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Olivier Goffart 2023-07-20 10:25:22 +02:00 • committed by Olivier Goffart
parent de532d372a
commit 81bb6e2c70
3 changed files with 158 additions and 4 deletions
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17
api/cpp/include/slint_platform.h
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@ -216,7 +216,7 @@ public:
/// Returns the amount of milliseconds since start of the application.
///
/// This function should only be implemented if the runtime is compiled with no_std
virtual uint64_t duration_since_start() const { return 0; }
virtual std::chrono::milliseconds duration_since_start() const { return {}; }
/// Spins an event loop and renders the visible windows.
virtual void run_event_loop() { }
@ -248,7 +248,7 @@ public:
(void)w.release();
},
[](void *p) -> uint64_t {
return reinterpret_cast<const Platform *>(p)->duration_since_start();
return reinterpret_cast<const Platform *>(p)->duration_since_start().count();
},
[](void *p) { return reinterpret_cast<Platform *>(p)->run_event_loop(); },
[](void *p) { return reinterpret_cast<Platform *>(p)->quit_event_loop(); },
@ -427,6 +427,19 @@ inline void update_timers_and_animations()
cbindgen_private::slint_platform_update_timers_and_animations();
}
/// Returns the duration until the next timer if there are pending timers
inline std::optional<std::chrono::milliseconds> duration_until_next_timer_update()
{
uint64_t val = cbindgen_private::slint_platform_duration_until_next_timer_update();
if (val == std::numeric_limits<uint64_t>::max()) {
return std::nullopt;
} else if (val >= uint64_t(std::chrono::milliseconds::max().count())) {
return std::chrono::milliseconds::max();
} else {
return std::chrono::milliseconds(val);
}
}
}
}
}