From f041cd599f2ba58906958f6886b9cd25e180d0af Mon Sep 17 00:00:00 2001
From: Yuhang Zhao <zhaoyuhang@rankyee.com>
Date: 周三, 06 12月 2023 10:28:34 +0800
Subject: [PATCH] add more const

---
 src/widgets/widgetitemdelegate.cpp |   66 ++++++++++++++++++++++++++++----
 1 files changed, 57 insertions(+), 9 deletions(-)

diff --git a/src/widgets/widgetitemdelegate.cpp b/src/widgets/widgetitemdelegate.cpp
index ad8b44b..6378f36 100644
--- a/src/widgets/widgetitemdelegate.cpp
+++ b/src/widgets/widgetitemdelegate.cpp
@@ -1,25 +1,73 @@
 #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() = default;
+
+    WidgetItemDelegate::~WidgetItemDelegate() = default;
+
+    QWindow *WidgetItemDelegate::window(const QObject *obj) const {
+        return static_cast<const QWidget *>(obj)->windowHandle();
     }
 
-    WidgetItemDelegate::~WidgetItemDelegate() {
+    bool WidgetItemDelegate::isEnabled(const QObject *obj) const {
+        return static_cast<const QWidget *>(obj)->isEnabled();
     }
 
-    QWindow *WidgetItemDelegate::window(QObject *obj) const {
-        return qobject_cast<QWidget *>(obj)->windowHandle();
+    bool WidgetItemDelegate::isVisible(const QObject *obj) const {
+        return static_cast<const QWidget *>(obj)->isVisible();
     }
 
-    bool WidgetItemDelegate::isEnabled(QObject *obj) const {
-        return qobject_cast<QWidget *>(obj)->isEnabled();
+    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};
     }
 
-    bool WidgetItemDelegate::isVisible(QObject *obj) const {
-        return qobject_cast<QWidget *>(obj)->isVisible();
+    QWindow *WidgetItemDelegate::hostWindow(const 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::resetQtGrabbedControl() const {
+        if (qt_button_down) {
+            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;
+            return true;
+        }
+        return false;
     }
 
 }
\ No newline at end of file

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