fix(windows): wait for Qt before getting bounds (#5478)

CHANGELOG.md

@@ -23,6 +23,7 @@
 - Bugfix: Fixed a crash that could occur when logging was enabled in IRC servers that were removed. (#5419)
 - Bugfix: Fixed message history occasionally not loading after a sleep. (#5457)
 - Bugfix: Fixed a crash when tab completing while having an invalid plugin loaded. (#5401)
+- Bugfix: Fixed windows on Windows not saving correctly when snapping them to the edges. (#5478)
 - Dev: Update Windows build from Qt 6.5.0 to Qt 6.7.1. (#5420)
 - Dev: Update vcpkg build Qt from 6.5.0 to 6.7.0, boost from 1.83.0 to 1.85.0, openssl from 3.1.3 to 3.3.0. (#5422)
 - Dev: Unsingletonize `ISoundController`. (#5462)

src/widgets/BaseWindow.cpp

@@ -240,7 +240,7 @@ BaseWindow::BaseWindow(FlagsEnum<Flags> _flags, QWidget *parent)
 #ifdef USEWINSDK
     this->useNextBounds_.setSingleShot(true);
     QObject::connect(&this->useNextBounds_, &QTimer::timeout, this, [this]() {
-        this->currentBounds_ = this->nextBounds_;
+        this->currentBounds_ = this->geometry();
     });
 #endif
 
@@ -1137,7 +1137,11 @@ bool BaseWindow::handleSIZE(MSG *msg)
 
             if (this->isNotMinimizedOrMaximized_)
             {
-                this->currentBounds_ = this->geometry();
+                // Wait for WM_SIZE to be processed by Qt and update the current
+                // bounds afterwards.
+                postToThread([this] {
+                    this->currentBounds_ = this->geometry();
+                });
             }
             this->useNextBounds_.stop();
 
@@ -1166,7 +1170,8 @@ bool BaseWindow::handleMOVE(MSG *msg)
 #ifdef USEWINSDK
     if (this->isNotMinimizedOrMaximized_)
     {
-        this->nextBounds_ = this->geometry();
+        // Wait for WM_SIZE (in case the window was maximized, we don't want to
+        // save the bounds but keep the old ones)
         this->useNextBounds_.start(10);
     }
 #endif

src/widgets/BaseWindow.hpp

@@ -188,7 +188,6 @@ private:
 
     QRect initalBounds_;
     QRect currentBounds_;
-    QRect nextBounds_;
     QTimer useNextBounds_;
     bool isNotMinimizedOrMaximized_{};
     bool lastEventWasNcMouseMove_ = false;