mirror of
https://github.com/hyprwm/Hyprland
synced 2024-11-14 20:25:58 +01:00
1ed1ce9506
moves std::shared_ptrs to a new implementation Advantages: - you can dereference a weak_ptr directly. This will obviously segfault on a nullptr deref if it's expired. - this is useful to avoid the .lock() hell where we are 100% sure the pointer _should_ be valid. (and if it isn't, it should throw.) - weak_ptrs are still valid while the SP is being destroyed. - reasoning: while an object (e.g. CWindow) is being destroyed, its `weak_ptr self` should be accessible (the sp is still alive, and so is CWindow), but it's not because by stl it's already expired (to prevent resurrection) - this impl solves it differently. w_p is expired, but can still be dereferenced and used. Creating `s_p`s is not possible anymore, though. - this is useful in destructors and callbacks.
60 lines
No EOL
3.7 KiB
C++
60 lines
No EOL
3.7 KiB
C++
#pragma once
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#include "../defines.hpp"
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#include <unordered_map>
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#include <any>
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#include <array>
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#include <list>
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#include <csetjmp>
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#include "../plugins/PluginAPI.hpp"
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// global typedef for hooked functions. Passes itself as a ptr when called, and `data` additionally.
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typedef std::function<void(void*, SCallbackInfo& info, std::any data)> HOOK_CALLBACK_FN;
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struct SCallbackFNPtr {
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WP<HOOK_CALLBACK_FN> fn;
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HANDLE handle = nullptr;
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};
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#define EMIT_HOOK_EVENT(name, param) \
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{ \
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static auto* const PEVENTVEC = g_pHookSystem->getVecForEvent(name); \
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SCallbackInfo info; \
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g_pHookSystem->emit(PEVENTVEC, info, param); \
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}
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#define EMIT_HOOK_EVENT_CANCELLABLE(name, param) \
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{ \
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static auto* const PEVENTVEC = g_pHookSystem->getVecForEvent(name); \
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SCallbackInfo info; \
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g_pHookSystem->emit(PEVENTVEC, info, param); \
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if (info.cancelled) \
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return; \
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}
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class CHookSystemManager {
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public:
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CHookSystemManager();
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// returns the pointer to the function.
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// losing this pointer (letting it get destroyed)
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// will equal to unregistering the callback.
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[[nodiscard("Losing this pointer instantly unregisters the callback")]] SP<HOOK_CALLBACK_FN> hookDynamic(const std::string& event, HOOK_CALLBACK_FN fn,
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HANDLE handle = nullptr);
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void unhook(SP<HOOK_CALLBACK_FN> fn);
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void emit(std::vector<SCallbackFNPtr>* const callbacks, SCallbackInfo& info, std::any data = 0);
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std::vector<SCallbackFNPtr>* getVecForEvent(const std::string& event);
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bool m_bCurrentEventPlugin = false;
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jmp_buf m_jbHookFaultJumpBuf;
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private:
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std::unordered_map<std::string, std::vector<SCallbackFNPtr>> m_mRegisteredHooks;
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};
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inline std::unique_ptr<CHookSystemManager> g_pHookSystem; |