From f874811443991759df4231b5127788af059a0df9 Mon Sep 17 00:00:00 2001
From: Sine Striker <trueful@163.com>
Date: 周二, 19 12月 2023 15:55:52 +0800
Subject: [PATCH] Add raise hook

---
 src/core/contexts/win32windowcontext.cpp |  159 +++++++++++++++++++++++++++++++++++++---------------
 1 files changed, 112 insertions(+), 47 deletions(-)

diff --git a/src/core/contexts/win32windowcontext.cpp b/src/core/contexts/win32windowcontext.cpp
index 86ec6bd..9b3e179 100644
--- a/src/core/contexts/win32windowcontext.cpp
+++ b/src/core/contexts/win32windowcontext.cpp
@@ -79,16 +79,6 @@
     // Original Qt window proc function
     static WNDPROC g_qtWindowProc = nullptr;
 
-    // ### FIXME FIXME FIXME
-    // ### FIXME: Tell the user to call in the documentation, instead of automatically
-    // calling it directly.
-    // ### FIXME FIXME FIXME
-    static const struct QWK_Hook {
-        QWK_Hook() {
-            qApp->setAttribute(Qt::AA_DontCreateNativeWidgetSiblings);
-        }
-    } g_hook{};
-
     struct DynamicApis {
         static const DynamicApis &instance() {
             static const DynamicApis inst{};
@@ -114,6 +104,7 @@
         DYNAMIC_API_DECLARE(DwmIsCompositionEnabled);
         DYNAMIC_API_DECLARE(DwmGetCompositionTimingInfo);
         DYNAMIC_API_DECLARE(DwmGetWindowAttribute);
+        DYNAMIC_API_DECLARE(DwmSetWindowAttribute);
         DYNAMIC_API_DECLARE(GetDpiForWindow);
         DYNAMIC_API_DECLARE(GetSystemMetricsForDpi);
         DYNAMIC_API_DECLARE(GetDpiForMonitor);
@@ -140,6 +131,7 @@
             DYNAMIC_API_RESOLVE(dwmapi, DwmIsCompositionEnabled);
             DYNAMIC_API_RESOLVE(dwmapi, DwmGetCompositionTimingInfo);
             DYNAMIC_API_RESOLVE(dwmapi, DwmGetWindowAttribute);
+            DYNAMIC_API_RESOLVE(dwmapi, DwmSetWindowAttribute);
 
             QSystemLibrary winmm(QStringLiteral("winmm"));
             DYNAMIC_API_RESOLVE(winmm, timeGetDevCaps);
@@ -428,8 +420,10 @@
         const auto monitorInfo = getMonitorForWindow(hwnd);
         RECT windowRect{};
         ::GetWindowRect(hwnd, &windowRect);
-        const auto newX = (RECT_WIDTH(monitorInfo.rcMonitor) - RECT_WIDTH(windowRect)) / 2;
-        const auto newY = (RECT_HEIGHT(monitorInfo.rcMonitor) - RECT_HEIGHT(windowRect)) / 2;
+        const auto newX = monitorInfo.rcMonitor.left +
+                          (RECT_WIDTH(monitorInfo.rcMonitor) - RECT_WIDTH(windowRect)) / 2;
+        const auto newY = monitorInfo.rcMonitor.top +
+                          (RECT_HEIGHT(monitorInfo.rcMonitor) - RECT_HEIGHT(windowRect)) / 2;
         ::SetWindowPos(hwnd, nullptr, newX, newY, 0, 0,
                        SWP_NOACTIVATE | SWP_NOSIZE | SWP_NOZORDER | SWP_NOOWNERZORDER);
     }
@@ -448,6 +442,9 @@
         ::GetWindowPlacement(hwnd, &wp);
         return ((wp.showCmd == SW_NORMAL) || (wp.showCmd == SW_RESTORE));
 #else
+        if (isFullScreen(hwnd)) {
+            return false;
+        }
         const auto style = static_cast<DWORD>(::GetWindowLongPtrW(hwnd, GWL_STYLE));
         return (!(style & (WS_MINIMIZE | WS_MAXIMIZE)));
 #endif
@@ -767,18 +764,39 @@
         return ::CallWindowProcW(g_qtWindowProc, hWnd, message, wParam, lParam);
     }
 
+    static inline void addManagedWindow(HWND hWnd, Win32WindowContext *ctx) {
+        // Store original window proc
+        if (!g_qtWindowProc) {
+            g_qtWindowProc = reinterpret_cast<WNDPROC>(::GetWindowLongPtrW(hWnd, GWLP_WNDPROC));
+        }
+
+        // Hook window proc
+        ::SetWindowLongPtrW(hWnd, GWLP_WNDPROC, reinterpret_cast<LONG_PTR>(QWKHookedWndProc));
+
+        // Install global native event filter
+        WindowsNativeEventFilter::install();
+
+        // Save window handle mapping
+        g_wndProcHash->insert(hWnd, ctx);
+    }
+
+    static inline void removeManagedWindow(HWND hWnd) {
+        // Remove window handle mapping
+        if (!g_wndProcHash->remove(hWnd))
+            return;
+
+        // Remove event filter if the all windows has been destroyed
+        if (g_wndProcHash->empty()) {
+            WindowsNativeEventFilter::uninstall();
+        }
+    }
+
     Win32WindowContext::Win32WindowContext() : AbstractWindowContext() {
     }
 
     Win32WindowContext::~Win32WindowContext() {
-        // Remove window handle mapping
-        if (auto hWnd = reinterpret_cast<HWND>(windowId); hWnd) {
-            g_wndProcHash->remove(hWnd);
-
-            // Remove event filter if the all windows has been destroyed
-            if (g_wndProcHash->empty()) {
-                WindowsNativeEventFilter::uninstall();
-            }
+        if (windowId) {
+            removeManagedWindow(reinterpret_cast<HWND>(windowId));
         }
     }
 
@@ -789,17 +807,60 @@
     void Win32WindowContext::virtual_hook(int id, void *data) {
         switch (id) {
             case CentralizeHook: {
-                const auto hwnd = reinterpret_cast<HWND>(m_windowHandle->winId());
+                const auto hwnd = reinterpret_cast<HWND>(windowId);
                 moveToDesktopCenter(hwnd);
+                return;
+            }
+
+            case RaiseWindowHook: {
+                if (m_windowHandle->windowStates() & Qt::WindowMinimized)
+                    m_windowHandle->showNormal();
+
+                auto hWnd = reinterpret_cast<HWND>(windowId);
+
+                // I have no idea what this does, but it works mostly
+                // https://www.codeproject.com/Articles/1724/Some-handy-dialog-box-tricks-tips-and-workarounds
+
+                ::AttachThreadInput(::GetWindowThreadProcessId(::GetForegroundWindow(), nullptr),
+                                    ::GetCurrentThreadId(), TRUE);
+
+                ::SetForegroundWindow(hWnd);
+                ::SetFocus(hWnd);
+
+                ::AttachThreadInput(GetWindowThreadProcessId(GetForegroundWindow(), nullptr),
+                                    GetCurrentThreadId(), FALSE);
                 return;
             }
 
             case ShowSystemMenuHook: {
                 const auto &pos = *static_cast<const QPoint *>(data);
-                auto hWnd = reinterpret_cast<HWND>(m_windowHandle->winId());
-                showSystemMenu2(hWnd, qpoint2point(pos), false,
+                auto hWnd = reinterpret_cast<HWND>(windowId);
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+                const QPoint nativeGlobalPos =
+                    QHighDpi::toNativeGlobalPosition(pos, m_windowHandle);
+#else
+                const QPoint nativeGlobalPos = QHighDpi::toNativePixels(pos, m_windowHandle);
+#endif
+                showSystemMenu2(hWnd, qpoint2point(nativeGlobalPos), false,
                                 m_delegate->isHostSizeFixed(m_host));
                 return;
+            }
+
+            case WindowAttributeChangedHook: {
+                auto args = static_cast<void **>(data);
+                const auto &key = *static_cast<const QString *>(args[0]);
+                const auto &newVar = *static_cast<const QVariant *>(args[1]);
+                const auto &oldVar = *static_cast<const QVariant *>(args[2]);
+
+                if (key == QStringLiteral("no-frame-shadow")) {
+                    if (newVar.toBool()) {
+                        // TODO: set off
+                    } else {
+                        // TODO: set on
+                    }
+                }
+
+                break;
             }
 
             case DefaultColorsHook: {
@@ -817,7 +878,7 @@
                 auto &painter = *static_cast<QPainter *>(args[0]);
                 const auto &rect = *static_cast<const QRect *>(args[1]);
                 const auto &region = *static_cast<const QRegion *>(args[2]);
-                const auto hwnd = reinterpret_cast<HWND>(m_windowHandle->winId());
+                const auto hwnd = reinterpret_cast<HWND>(windowId);
 
                 QPen pen;
                 pen.setWidth(getWindowFrameBorderThickness(hwnd) * 2);
@@ -840,7 +901,7 @@
                 }
                 painter.save();
 
-                // ### TODO: do we need to enable or disable it?
+                // We needs anti-aliasing to give us better result.
                 painter.setRenderHint(QPainter::Antialiasing);
 
                 painter.setPen(pen);
@@ -849,6 +910,7 @@
                     QPoint{m_windowHandle->width(), 0}
                 });
                 painter.restore();
+                return;
             }
 
             default: {
@@ -867,32 +929,34 @@
         return getWindowFrameBorderThickness(reinterpret_cast<HWND>(windowId));
     }
 
-    bool Win32WindowContext::setupHost() {
+    void Win32WindowContext::winIdChanged(QWindow *oldWindow) {
+        removeManagedWindow(reinterpret_cast<HWND>(windowId));
+        if (!m_windowHandle) {
+            return;
+        }
+
         // Install window hook
         auto winId = m_windowHandle->winId();
         auto hWnd = reinterpret_cast<HWND>(winId);
 
+#if QT_VERSION < QT_VERSION_CHECK(6, 5, 0)
+        for (const auto attr : {
+                 _DWMWA_USE_IMMERSIVE_DARK_MODE_BEFORE_20H1,
+                 _DWMWA_USE_IMMERSIVE_DARK_MODE,
+             }) {
+            const BOOL enable = TRUE;
+            DynamicApis::instance().pDwmSetWindowAttribute(hWnd, attr, &enable, sizeof(enable));
+        }
+#endif
+
         // Inform Qt we want and have set custom margins
         updateInternalWindowFrameMargins(hWnd, m_windowHandle);
 
-        // Store original window proc
-        if (!g_qtWindowProc) {
-            g_qtWindowProc = reinterpret_cast<WNDPROC>(::GetWindowLongPtrW(hWnd, GWLP_WNDPROC));
-        }
+        // Add managed window
+        addManagedWindow(hWnd, this);
 
-        // Hook window proc
-        ::SetWindowLongPtrW(hWnd, GWLP_WNDPROC, reinterpret_cast<LONG_PTR>(QWKHookedWndProc));
-
-        // Install global native event filter
-        WindowsNativeEventFilter::install();
-
-        // Cache window ID
+        // Cache win id
         windowId = winId;
-
-        // Save window handle mapping
-        g_wndProcHash->insert(hWnd, this);
-
-        return true;
     }
 
     bool Win32WindowContext::windowProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam,
@@ -1153,7 +1217,7 @@
                 const WindowPart currentWindowPart = lastHitTestResult;
                 if (message == WM_NCMOUSEMOVE) {
                     if (currentWindowPart != WindowPart::ChromeButton) {
-                        m_delegate->resetQtGrabbedControl();
+                        m_delegate->resetQtGrabbedControl(m_host);
                         if (mouseLeaveBlocked) {
                             emulateClientAreaMessage(hWnd, message, wParam, lParam,
                                                      WM_NCMOUSELEAVE);
@@ -1215,7 +1279,7 @@
                         // window from client area, which means we will get previous window part as
                         // HTCLIENT if the mouse leaves window from client area and enters window
                         // from non-client area, but it has no bad effect.
-                        m_delegate->resetQtGrabbedControl();
+                        m_delegate->resetQtGrabbedControl(m_host);
                     }
                 }
                 break;
@@ -1235,7 +1299,7 @@
                     // If wParam is TRUE, the window is being shown.
                     // If lParam is zero, the message was sent because of a call to the ShowWindow
                     // function.
-                    if (wParam && lParam == 0) {
+                    if (wParam && !lParam) {
                         centered = true;
                         moveToDesktopCenter(hWnd);
                     }
@@ -1540,9 +1604,10 @@
                 // the client area as a whole will shift to the left, which looks very abnormal if
                 // we don't repaint it. This exception disappears if we add SWP_NOCOPYBITS flag.
                 // But I don't know what caused the problem, or why this would solve it.
+                static constexpr const auto kBadWindowPosFlag =
+                    SWP_NOSIZE | SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE | SWP_FRAMECHANGED;
                 const auto windowPos = reinterpret_cast<LPWINDOWPOS>(lParam);
-                if (windowPos->flags ==
-                    (SWP_NOSIZE | SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE | SWP_FRAMECHANGED)) {
+                if (windowPos->flags == kBadWindowPosFlag) {
                     windowPos->flags |= SWP_NOCOPYBITS;
                 }
                 break;

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