From 2452f5958272d50981ab89ff843d2fa715d33957 Mon Sep 17 00:00:00 2001
From: Zhao Yuhang <2546789017@qq.com>
Date: 周四, 14 12月 2023 21:23:25 +0800
Subject: [PATCH] add macos titlebar

---
 src/widgets/widgetitemdelegate.cpp |   71 ++++++++++++++++++++++++++++++-----
 1 files changed, 61 insertions(+), 10 deletions(-)

diff --git a/src/widgets/widgetitemdelegate.cpp b/src/widgets/widgetitemdelegate.cpp
index 61ed17b..ca8bb99 100644
--- a/src/widgets/widgetitemdelegate.cpp
+++ b/src/widgets/widgetitemdelegate.cpp
@@ -1,25 +1,76 @@
 #include "widgetitemdelegate_p.h"
 
+#include <QtGui/QMouseEvent>
 #include <QtWidgets/QWidget>
+#include <QtWidgets/QApplication>
+
+extern Q_WIDGETS_EXPORT QWidget *qt_button_down;
 
 namespace QWK {
-    
-    WidgetItemDelegate::WidgetItemDelegate() {
-    }
 
-    WidgetItemDelegate::~WidgetItemDelegate() {
-    }
+    WidgetItemDelegate::WidgetItemDelegate() = default;
+
+    WidgetItemDelegate::~WidgetItemDelegate() = default;
 
     QWindow *WidgetItemDelegate::window(QObject *obj) const {
-        return static_cast<QWidget *>(obj)->windowHandle();
+        return static_cast<const QWidget *>(obj)->windowHandle();
     }
 
-    bool WidgetItemDelegate::isEnabled(QObject *obj) const {
-        return static_cast<QWidget *>(obj)->isEnabled();
+    bool WidgetItemDelegate::isEnabled(const QObject *obj) const {
+        return static_cast<const QWidget *>(obj)->isEnabled();
     }
 
-    bool WidgetItemDelegate::isVisible(QObject *obj) const {
-        return static_cast<QWidget *>(obj)->isVisible();
+    bool WidgetItemDelegate::isVisible(const QObject *obj) const {
+        return static_cast<const QWidget *>(obj)->isVisible();
+    }
+
+    QRect WidgetItemDelegate::mapGeometryToScene(const QObject *obj) const {
+        auto widget = static_cast<const QWidget *>(obj);
+        const QPoint originPoint = widget->mapTo(widget->window(), QPoint(0, 0));
+        const QSize size = widget->size();
+        return {originPoint, size};
+    }
+
+    QWindow *WidgetItemDelegate::hostWindow(QObject *host) const {
+        return static_cast<const QWidget *>(host)->windowHandle();
+    }
+
+    bool WidgetItemDelegate::isHostSizeFixed(const QObject *host) const {
+        const auto widget = static_cast<const QWidget *>(host);
+        // "Qt::MSWindowsFixedSizeDialogHint" is used cross-platform actually.
+        if (widget->windowFlags() & Qt::MSWindowsFixedSizeDialogHint) {
+            return true;
+        }
+        // Caused by setFixedWidth/Height/Size().
+        const QSize minSize = widget->minimumSize();
+        const QSize maxSize = widget->maximumSize();
+        if (!minSize.isEmpty() && !maxSize.isEmpty() && (minSize == maxSize)) {
+            return true;
+        }
+        // Usually set by the user.
+        const QSizePolicy sizePolicy = widget->sizePolicy();
+        if ((sizePolicy.horizontalPolicy() == QSizePolicy::Fixed) &&
+            (sizePolicy.verticalPolicy() == QSizePolicy::Fixed)) {
+            return true;
+        }
+        return false;
+    }
+
+    bool WidgetItemDelegate::isWindowActive(const QObject *host) const {
+        return static_cast<const QWidget *>(host)->isActiveWindow();
+    }
+
+    void WidgetItemDelegate::resetQtGrabbedControl() const {
+        if (!qt_button_down) {
+            return;
+        }
+        static constexpr const auto invalidPos =
+            QPoint{std::numeric_limits<int>::lowest(), std::numeric_limits<int>::lowest()};
+        const auto event = new QMouseEvent(
+            QEvent::MouseButtonRelease, invalidPos, invalidPos, invalidPos, Qt::LeftButton,
+            QGuiApplication::mouseButtons() ^ Qt::LeftButton, QGuiApplication::keyboardModifiers());
+        QApplication::postEvent(qt_button_down, event);
+        qt_button_down = nullptr;
     }
 
 }
\ No newline at end of file

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