From 43d4cc46a14beb784202048ce6478e246a4a8de4 Mon Sep 17 00:00:00 2001
From: Nerixyz <nerixdev@outlook.de>
Date: Sat, 2 Dec 2023 11:02:02 +0100
Subject: [PATCH] fix: hopefully less build errors

---
 src/widgets/BaseWindow.cpp             | 14 ++++++--
 src/widgets/helper/TitlebarButtons.cpp | 49 ++++++++++++++++++--------
 src/widgets/helper/TitlebarButtons.hpp | 15 +++++---
 3 files changed, 57 insertions(+), 21 deletions(-)

diff --git a/src/widgets/BaseWindow.cpp b/src/widgets/BaseWindow.cpp
index f6d9dff01fb..d5c6e2b0e74 100644
--- a/src/widgets/BaseWindow.cpp
+++ b/src/widgets/BaseWindow.cpp
@@ -600,6 +600,11 @@ bool BaseWindow::nativeEvent(const QByteArray &eventType, void *message,
             break;
 
         case WM_NCMOUSEMOVE: {
+            if (!this->ui_.titlebarButtons)
+            {
+                break;
+            }
+
             if (overButton())
             {
                 *result = 0;
@@ -619,13 +624,16 @@ bool BaseWindow::nativeEvent(const QByteArray &eventType, void *message,
         break;
 
         case WM_NCMOUSELEAVE: {
-            this->ui_.titlebarButtons->leave();
+            if (this->ui_.titlebarButtons)
+            {
+                this->ui_.titlebarButtons->leave();
+            }
         }
         break;
 
         case WM_NCLBUTTONDOWN:
         case WM_NCLBUTTONUP: {
-            if (!overButton())
+            if (!this->ui_.titlebarButtons || !overButton())
             {
                 break;
             }
@@ -715,6 +723,7 @@ void BaseWindow::calcButtonsSizes()
         return;
     }
 
+#ifdef USEWINSDK
     if ((static_cast<float>(this->width()) / this->scale()) < 300)
     {
         this->ui_.titlebarButtons->setSmallSize();
@@ -723,6 +732,7 @@ void BaseWindow::calcButtonsSizes()
     {
         this->ui_.titlebarButtons->setRegularSize();
     }
+#endif
 }
 
 void BaseWindow::drawCustomWindowFrame(QPainter &painter)
diff --git a/src/widgets/helper/TitlebarButtons.cpp b/src/widgets/helper/TitlebarButtons.cpp
index 1b0811f04e3..4dcdf393261 100644
--- a/src/widgets/helper/TitlebarButtons.cpp
+++ b/src/widgets/helper/TitlebarButtons.cpp
@@ -20,13 +20,34 @@ TitleBarButtons::TitleBarButtons(QWidget *window, TitleBarButton *minButton,
 
 void TitleBarButtons::hover(size_t ht, QPoint at)
 {
-    auto [button, others] = this->buttonForHt(ht);
-    button->ncEnter();
-    button->ncMove(button->mapFromGlobal(at));
-    for (auto *other : others)
+    TitleBarButton *hovered{};
+    TitleBarButton *other1{};
+    TitleBarButton *other2{};
+    switch (ht)
     {
-        other->ncLeave();
+        case HTMAXBUTTON:
+            hovered = this->maxButton_;
+            other1 = this->minButton_;
+            other2 = this->closeButton_;
+            break;
+        case HTMINBUTTON:
+            hovered = this->minButton_;
+            other1 = this->maxButton_;
+            other2 = this->closeButton_;
+            break;
+        case HTCLOSE:
+            hovered = this->closeButton_;
+            other1 = this->minButton_;
+            other2 = this->maxButton_;
+            break;
+        default:
+            Q_ASSERT_X(false, Q_FUNC_INFO, "Precondition violated");
+            return;
     }
+    hovered->ncEnter();
+    hovered->ncMove(hovered->mapFromGlobal(at));
+    other1->ncLeave();
+    other2->ncLeave();
 }
 
 void TitleBarButtons::leave()
@@ -38,13 +59,13 @@ void TitleBarButtons::leave()
 
 void TitleBarButtons::mouseDown(size_t ht, QPoint at)
 {
-    auto [button, others] = this->buttonForHt(ht);
+    auto *button = this->buttonForHt(ht);
     button->ncMouseDown(button->mapFromGlobal(at));
 }
 
 void TitleBarButtons::mouseUp(size_t ht, QPoint at)
 {
-    auto [button, others] = this->buttonForHt(ht);
+    auto *button = this->buttonForHt(ht);
     button->ncMouseUp(button->mapFromGlobal(at));
 }
 
@@ -70,21 +91,19 @@ void TitleBarButtons::setRegularSize()
     this->closeButton_->setScaleIndependantSize(46, 30);
 }
 
-std::pair<TitleBarButton *, std::array<TitleBarButton *, 2>>
-    TitleBarButtons::buttonForHt(size_t ht) const
+TitleBarButton *TitleBarButtons::buttonForHt(size_t ht) const
 {
     switch (ht)
     {
         case HTMAXBUTTON:
-            return {this->maxButton_, {this->minButton_, this->closeButton_}};
+            return this->maxButton_;
         case HTMINBUTTON:
-            return {this->minButton_, {this->maxButton_, this->closeButton_}};
+            return this->minButton_;
         case HTCLOSE:
-            return {this->closeButton_, {this->minButton_, this->maxButton_}};
+            return this->closeButton_;
         default:
-            Q_ASSERT_X(false, Q_FUNC_INFO, "No button for hittest value found");
-            return {this->closeButton_,
-                    {this->minButton_, this->maxButton_}};  // fallback
+            Q_ASSERT_X(false, Q_FUNC_INFO, "Precondition violated");
+            return nullptr;
     }
 }
 
diff --git a/src/widgets/helper/TitlebarButtons.hpp b/src/widgets/helper/TitlebarButtons.hpp
index d3154bad59b..138dd03f3a0 100644
--- a/src/widgets/helper/TitlebarButtons.hpp
+++ b/src/widgets/helper/TitlebarButtons.hpp
@@ -5,8 +5,6 @@ class QWidget;
 
 #include <QtGlobal>
 
-#include <tuple>
-
 namespace chatterino {
 
 #ifdef USEWINSDK
@@ -18,9 +16,18 @@ class TitleBarButtons : QObject
     TitleBarButtons(QWidget *window, TitleBarButton *minButton,
                     TitleBarButton *maxButton, TitleBarButton *closeButton);
 
+    /// @pre ht must be one of { HTMAXBUTTON, HTMINBUTTON, HTCLOSE }.
+    /// @param at The global position of the event
     void hover(size_t ht, QPoint at);
+
     void leave();
+
+    /// @pre ht must be one of { HTMAXBUTTON, HTMINBUTTON, HTCLOSE }.
+    /// @param at The global position of the event
     void mouseDown(size_t ht, QPoint at);
+
+    /// @pre ht must be one of { HTMAXBUTTON, HTMINBUTTON, HTCLOSE }.
+    /// @param at The global position of the event
     void mouseUp(size_t ht, QPoint at);
 
     void updateMaxButton();
@@ -29,8 +36,8 @@ class TitleBarButtons : QObject
     void setRegularSize();
 
 private:
-    std::pair<TitleBarButton *, std::array<TitleBarButton *, 2>> buttonForHt(
-        size_t ht) const;
+    /// @pre ht must be one of { HTMAXBUTTON, HTMINBUTTON, HTCLOSE }.
+    TitleBarButton *buttonForHt(size_t ht) const;
 
     QWidget *window_ = nullptr;
     TitleBarButton *minButton_ = nullptr;