internal: new shared_ptr and weak_ptr implementation (#5883)

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.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/managers/input/InputMethodPopup.cpp b/src/managers/input/InputMethodPopup.cpp
index f2d49ae8..9ff584e6 100644
--- a/src/managers/input/InputMethodPopup.cpp
+++ b/src/managers/input/InputMethodPopup.cpp
@@ -73,7 +73,7 @@ void CInputPopup::damageSurface() {
 }
 
 void CInputPopup::updateBox() {
-    if (!popup.lock()->mapped)
+    if (!popup->mapped)
         return;
 
     const auto OWNER      = queryOwner();
@@ -114,7 +114,7 @@ void CInputPopup::updateBox() {
         popupOffset.x -= popupOverflow;
 
     CBox cursorBoxLocal({-popupOffset.x, -popupOffset.y}, cursorBoxParent.size());
-    popup.lock()->sendInputRectangle(cursorBoxLocal);
+    popup->sendInputRectangle(cursorBoxLocal);
 
     CBox popupBoxParent(cursorBoxParent.pos() + popupOffset, currentPopupSize);
     if (popupBoxParent != lastBoxLocal) {