From ecd08c3cd520b8269396809996d2bf496a3c8901 Mon Sep 17 00:00:00 2001
From: Sine Striker <trueful@163.com>
Date: 摹曛, 29 2月 2024 03:26:45 +0800
Subject: [PATCH] minor tweaks

---
 src/widgets/widgetwindowagent_win.cpp      |    2 
 examples/mainwindow/CMakeLists.txt         |    9 --
 qmsetup                                    |    2 
 src/quick/quickwindowagent_win.cpp         |   65 ++++++++++++---------
 src/core/shared/windows10borderhandler_p.h |   13 ++++
 README.md                                  |    6 ++
 src/core/contexts/win32windowcontext.cpp   |   83 ++++++++++++++-------------
 7 files changed, 104 insertions(+), 76 deletions(-)

diff --git a/README.md b/README.md
index 39a33fa..b47a9a7 100644
--- a/README.md
+++ b/README.md
@@ -255,6 +255,12 @@
 + QWindowKit Internals [TODO]
 + [FramelessHelper Related](docs/framelesshelper-related.md)
 
+
+### Vulnerabilities
+
++ Once you have made the window frameless, it will not be able to switch back to the system border.
++ There must not be any child widget with `Qt::WA_NativeWindow` property enabled, otherwise the native features and display may be abnormal. Therefore, do not set any widget that has called `QWidget::winId()` or `QWidget::setAttribute(Qt::WA_NativeWindow)` as a descendant of a frameless window. If you really need to move widgets between different windows, make sure that the widget is not a top-level window and wrap it with a frameless container.
+
 ## TODO
 
 + Fix 5.15 window abnormal behavior
diff --git a/examples/mainwindow/CMakeLists.txt b/examples/mainwindow/CMakeLists.txt
index c74e902..bd16470 100644
--- a/examples/mainwindow/CMakeLists.txt
+++ b/examples/mainwindow/CMakeLists.txt
@@ -4,11 +4,6 @@
 
 qwk_add_example(${PROJECT_NAME}
     SOURCES ${_src} mainwindow.qrc ../shared/resources/shared.qrc
-    QT_LINKS Core Gui Widgets # WebEngineWidgets
+    QT_LINKS Core Gui Widgets # MultimediaWidgets
     LINKS QWKWidgets WidgetFrame
-)
-
-set_target_properties(${PROJECT_NAME} PROPERTIES
-    CXX_STANDARD 17
-    CXX_STANDARD_REQUIRED TRUE
-)
+)
\ No newline at end of file
diff --git a/qmsetup b/qmsetup
index 961f074..513c04b 160000
--- a/qmsetup
+++ b/qmsetup
@@ -1 +1 @@
-Subproject commit 961f074a5bc9e6cfd0ecaf790be2734d08702a9f
+Subproject commit 513c04beb24f77813fedf96c8c9d215f41646a00
diff --git a/src/core/contexts/win32windowcontext.cpp b/src/core/contexts/win32windowcontext.cpp
index 4fda1eb..811fd44 100644
--- a/src/core/contexts/win32windowcontext.cpp
+++ b/src/core/contexts/win32windowcontext.cpp
@@ -33,14 +33,6 @@
 #include "qwkglobal_p.h"
 #include "qwkwindowsextra_p.h"
 
-// https://github.com/qt/qtbase/blob/6.6.1/src/plugins/platforms/windows/qwindowswindow.cpp#L2791
-// https://github.com/qt/qtbase/blob/6.6.1/src/plugins/platforms/windows/qwindowswindow.cpp#L3321
-// This issue exists only in Qt 6.6.1, and was introduced by QTBUG-113736 patch and fixed by
-// QTBUG-117704 patch.
-#if !QWINDOWKIT_CONFIG(ENABLE_WINDOWS_SYSTEM_BORDERS) && QT_VERSION == QT_VERSION_CHECK(6, 6, 1)
-#  define QTBUG_113736_WORKAROUND
-#endif
-
 namespace QWK {
 
     // The thickness of an auto-hide taskbar in pixels.
@@ -490,17 +482,38 @@
                 return false;
             }
 
-            // https://github.com/qt/qtbase/blob/e26a87f1ecc40bc8c6aa5b889fce67410a57a702/src/plugins/platforms/windows/qwindowscontext.cpp#L1546
-            // Qt needs to refer to the WM_NCCALCSIZE message data that hasn't been processed, so we
-            // have to process it after Qt acquires the initial data.
             auto msg = static_cast<const MSG *>(message);
-            if (msg->message == WM_NCCALCSIZE && lastMessageContext) {
-                LRESULT res;
-                if (lastMessageContext->nonClientCalcSizeHandler(msg->hwnd, msg->message,
-                                                                 msg->wParam, msg->lParam, &res)) {
-                    *result = decltype(*result)(res);
-                    return true;
+            switch (msg->message) {
+                case WM_NCCALCSIZE: {
+                    // https://github.com/qt/qtbase/blob/e26a87f1ecc40bc8c6aa5b889fce67410a57a702/src/plugins/platforms/windows/qwindowscontext.cpp#L1546
+                    // Qt needs to refer to the WM_NCCALCSIZE message data that hasn't been
+                    // processed, so we have to process it after Qt acquires the initial data.
+                    if (lastMessageContext) {
+                        LRESULT res;
+                        if (lastMessageContext->nonClientCalcSizeHandler(
+                                msg->hwnd, msg->message, msg->wParam, msg->lParam, &res)) {
+                            *result = decltype(*result)(res);
+                            return true;
+                        }
+                    }
+                    break;
                 }
+
+                    // case WM_NCHITTEST: {
+                    //     // The child window must return HTTRANSPARENT when processing
+                    //     WM_NCHITTEST for
+                    //     // the parent window to receive WM_NCHITTEST.
+                    //     if (!lastMessageContext) {
+                    //         auto rootHWnd = ::GetAncestor(msg->hwnd, GA_ROOT);
+                    //         if (rootHWnd != msg->hwnd) {
+                    //             if (auto ctx = g_wndProcHash->value(rootHWnd)) {
+                    //                 *result = HTTRANSPARENT;
+                    //                 return true;
+                    //             }
+                    //         }
+                    //     }
+                    //     break;
+                    // }
             }
             return false;
         }
@@ -589,13 +602,15 @@
             return ::DefWindowProcW(hWnd, message, wParam, lParam);
         }
 
+        WindowsNativeEventFilter::lastMessageContext = ctx;
+        const auto &contextCleaner = qScopeGuard([]() {
+            WindowsNativeEventFilter::lastMessageContext = nullptr; //
+        });
+
         // Since Qt does the necessary processing of the WM_NCCALCSIZE message, we need to
         // forward it right away and process it in our native event filter.
         if (message == WM_NCCALCSIZE) {
-            WindowsNativeEventFilter::lastMessageContext = ctx;
-            LRESULT result = ::CallWindowProcW(g_qtWindowProc, hWnd, message, wParam, lParam);
-            WindowsNativeEventFilter::lastMessageContext = nullptr;
-            return result;
+            return ::CallWindowProcW(g_qtWindowProc, hWnd, message, wParam, lParam);
         }
 
         // Try hooked procedure and save result
@@ -613,20 +628,10 @@
     }
 
     static inline void addManagedWindow(QWindow *window, HWND hWnd, Win32WindowContext *ctx) {
-#ifndef QTBUG_113736_WORKAROUND
-        const auto margins = [](HWND hWnd) -> QMargins {
-            const auto titleBarHeight = int(getTitleBarHeight(hWnd));
-            if (isSystemBorderEnabled()) {
-                return {0, -titleBarHeight, 0, 0};
-            } else {
-                const auto frameSize = int(getResizeBorderThickness(hWnd));
-                return {-frameSize, -titleBarHeight, -frameSize, -frameSize};
-            }
-        }(hWnd);
-
-        // Inform Qt we want and have set custom margins
-        setInternalWindowFrameMargins(window, margins);
-#endif
+        if (isSystemBorderEnabled()) {
+            // Inform Qt we want and have set custom margins
+            setInternalWindowFrameMargins(window, QMargins(0, -int(getTitleBarHeight(hWnd)), 0, 0));
+        }
 
         // Store original window proc
         if (!g_qtWindowProc) {
@@ -817,10 +822,10 @@
         mouseLeaveBlocked = false;
         lastHitTestResult = WindowPart::Outside;
 
-#ifdef QTBUG_113736_WORKAROUND
-        m_delegate->setWindowFlags(m_host,
-                                   m_delegate->getWindowFlags(m_host) | Qt::FramelessWindowHint);
-#endif
+        if (!isSystemBorderEnabled()) {
+            m_delegate->setWindowFlags(m_host, m_delegate->getWindowFlags(m_host) |
+                                                   Qt::FramelessWindowHint);
+        }
 
         // If the original window id is valid, remove all resources related
         if (oldWinId) {
diff --git a/src/core/shared/windows10borderhandler_p.h b/src/core/shared/windows10borderhandler_p.h
index 7fc9760..cf530e8 100644
--- a/src/core/shared/windows10borderhandler_p.h
+++ b/src/core/shared/windows10borderhandler_p.h
@@ -1,6 +1,19 @@
+// Copyright (C) 2023-2024 Stdware Collections (https://www.github.com/stdware)
+// Copyright (C) 2021-2023 wangwenx190 (Yuhang Zhao)
+// SPDX-License-Identifier: Apache-2.0
+
 #ifndef WINDOWS10BORDERHANDLER_P_H
 #define WINDOWS10BORDERHANDLER_P_H
 
+//
+//  W A R N I N G !!!
+//  -----------------
+//
+// This file is not part of the QWindowKit API. It is used purely as an
+// implementation detail. This header file may change from version to
+// version without notice, or may even be removed.
+//
+
 #include <QtGui/QWindow>
 #include <QtGui/QMouseEvent>
 
diff --git a/src/quick/quickwindowagent_win.cpp b/src/quick/quickwindowagent_win.cpp
index 011dae0..0ef0d60 100644
--- a/src/quick/quickwindowagent_win.cpp
+++ b/src/quick/quickwindowagent_win.cpp
@@ -14,8 +14,6 @@
 
 #if QWINDOWKIT_CONFIG(ENABLE_WINDOWS_SYSTEM_BORDERS)
 
-    class DeferredDeleteHook;
-
     class BorderItem : public QQuickPaintedItem, public Windows10BorderHandler {
     public:
         explicit BorderItem(QQuickItem *parent, AbstractWindowContext *context);
@@ -30,29 +28,16 @@
     protected:
         bool sharedEventFilter(QObject *obj, QEvent *event) override;
 
-        std::unique_ptr<DeferredDeleteHook> paintHook;
-    };
+#  if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+        volatile bool needPaint = false;
 
-    class DeferredDeleteHook : public QObject {
-    public:
-        DeferredDeleteHook(BorderItem *item) : item(item) {
-        }
-
-        // Override deferred delete handler
-        bool event(QEvent *event) override {
-            if (event->type() == QEvent::DeferredDelete) {
-                item->drawBorder();
-                return true;
-            }
-            return QObject::event(event);
-        }
-
-        BorderItem *item;
+    private:
+        void _q_afterSynchronizing();
+#  endif
     };
 
     BorderItem::BorderItem(QQuickItem *parent, AbstractWindowContext *context)
-        : QQuickPaintedItem(parent), Windows10BorderHandler(context),
-          paintHook(std::make_unique<DeferredDeleteHook>(this)) {
+        : QQuickPaintedItem(parent), Windows10BorderHandler(context) {
         setAntialiasing(true);   // We need anti-aliasing to give us better result.
         setFillColor({});        // Will improve the performance a little bit.
         setOpaquePainting(true); // Will also improve the performance, we don't draw
@@ -66,6 +51,11 @@
 
         setZ(std::numeric_limits<qreal>::max()); // Make sure our fake border always above
                                                  // everything in the window.
+
+#  if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+        connect(window(), &QQuickWindow::afterSynchronizing, this,
+                &BorderItem::_q_afterSynchronizing, Qt::DirectConnection);
+#  endif
 
         // First update
         if (context->windowId()) {
@@ -84,12 +74,23 @@
     void BorderItem::paint(QPainter *painter) {
         Q_UNUSED(painter)
 
-        // https://github.com/qt/qtdeclarative/blob/cc04afbb382fd4b1f65173d71f44d3372c47b0e1/src/quick/scenegraph/qsgthreadedrenderloop.cpp#L551
-        // https://github.com/qt/qtdeclarative/blob/cc04afbb382fd4b1f65173d71f44d3372c47b0e1/src/quick/scenegraph/qsgthreadedrenderloop.cpp#L561
-        // QCoreApplication must process all DeferredDelay events right away after rendering, we can
-        // hook it by overriding a specifiy QObject's event handler and draw the native border in
-        // it.
-        paintHook->deleteLater();
+#  if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+        if (auto api = window()->rendererInterface()->graphicsApi();
+            !(api == QSGRendererInterface::Direct3D11 || api == QSGRendererInterface::Direct3D12)) {
+#  endif
+            QRect rect(QPoint(0, 0), size().toSize());
+            QRegion region(rect);
+            void *args[] = {
+                painter,
+                &rect,
+                &region,
+            };
+            ctx->virtual_hook(AbstractWindowContext::DrawWindows10BorderHook, args);
+#  if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+        } else {
+            needPaint = true;
+        }
+#  endif
     }
 
     void BorderItem::itemChange(ItemChange change, const ItemChangeData &data) {
@@ -111,7 +112,6 @@
         switch (event->type()) {
             case QEvent::WindowStateChange: {
                 updateGeometry();
-                break;
             }
             default:
                 break;
@@ -119,6 +119,15 @@
         return Windows10BorderHandler::sharedEventFilter(obj, event);
     }
 
+#  if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    void BorderItem::_q_afterSynchronizing() {
+        if (needPaint) {
+            needPaint = false;
+            drawBorder();
+        }
+    }
+#  endif
+
     void QuickWindowAgentPrivate::setupWindows10BorderWorkaround() {
         // Install painting hook
         auto ctx = context.get();
diff --git a/src/widgets/widgetwindowagent_win.cpp b/src/widgets/widgetwindowagent_win.cpp
index 13af840..706e865 100644
--- a/src/widgets/widgetwindowagent_win.cpp
+++ b/src/widgets/widgetwindowagent_win.cpp
@@ -84,7 +84,6 @@
         bool sharedEventFilter(QObject *obj, QEvent *event) override {
             Q_UNUSED(obj)
 
-            auto window = widget->windowHandle();
             switch (event->type()) {
                 case QEvent::Expose: {
                     // Qt will absolutely send a QExposeEvent or QResizeEvent to the QWindow when it
@@ -95,6 +94,7 @@
                     // Since a QExposeEvent will be sent immediately after the QResizeEvent, we can
                     // simply ignore it.
                     auto ee = static_cast<QExposeEvent *>(event);
+                    auto window = widget->windowHandle();
                     if (window->isExposed() && isNormalWindow() && !ee->region().isNull()) {
                         forwardEventToWindowAndDraw(window, event);
                         return true;

--
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