From a12bb8782bd02305466a29101a4c54d6ba9c6bfe Mon Sep 17 00:00:00 2001
From: Sine Striker <trueful@163.com>
Date: 周四, 28 12月 2023 16:03:06 +0800
Subject: [PATCH] minor tweaks

---
 src/widgets/widgetwindowagent_mac.cpp |   17 ++++++++++++++++-
 1 files changed, 16 insertions(+), 1 deletions(-)

diff --git a/src/widgets/widgetwindowagent_mac.cpp b/src/widgets/widgetwindowagent_mac.cpp
index 912b03f..97b6028 100644
--- a/src/widgets/widgetwindowagent_mac.cpp
+++ b/src/widgets/widgetwindowagent_mac.cpp
@@ -4,6 +4,10 @@
 
 namespace QWK {
 
+    static inline QRect getWidgetSceneRect(QWidget *widget) {
+        return {widget->mapTo(widget->window(), QPoint()), widget->size()};
+    }
+
     class SystemButtonAreaWidgetEventFilter : public QObject {
     public:
         SystemButtonAreaWidgetEventFilter(QWidget *widget, AbstractWindowContext *ctx,
@@ -19,7 +23,7 @@
             switch (event->type()) {
                 case QEvent::Move:
                 case QEvent::Resize: {
-                    ctx->setSystemButtonArea(widget->geometry());
+                    ctx->setSystemButtonArea(getWidgetSceneRect(widget));
                     break;
                 }
 
@@ -34,13 +38,23 @@
         AbstractWindowContext *ctx;
     };
 
+    /*!
+        Returns the widget that acts as the system button area.
+    */
     QWidget *WidgetWindowAgent::systemButtonArea() const {
         Q_D(const WidgetWindowAgent);
         return d->systemButtonAreaWidget;
     }
 
+    /*!
+        Sets the widget that acts as the system button area. The system button will be centered in
+        its area, it is recommended to place the widget in a layout and set a fixed size policy.
+    */
     void WidgetWindowAgent::setSystemButtonArea(QWidget *widget) {
         Q_D(WidgetWindowAgent);
+        if (d->systemButtonAreaWidget == widget)
+            return;
+
         auto ctx = d->context.get();
         d->systemButtonAreaWidget = widget;
         if (!widget) {
@@ -50,6 +64,7 @@
         }
         d->systemButtonAreaWidgetEventFilter =
             std::make_unique<SystemButtonAreaWidgetEventFilter>(widget, ctx);
+        ctx->setSystemButtonArea(getWidgetSceneRect(widget));
     }
 
 }
\ No newline at end of file

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