From d61db440e1c757a656ec2ab91f0c2f39ccd5d5f3 Mon Sep 17 00:00:00 2001
From: Yuhang Zhao <zhaoyuhang@rankyee.com>
Date: 摹曛, 28 12月 2023 15:19:56 +0800
Subject: [PATCH] minor tweaks

---
 src/core/contexts/win32windowcontext.cpp |  698 ++++++++++++++++++++++++---------------------------------
 1 files changed, 296 insertions(+), 402 deletions(-)

diff --git a/src/core/contexts/win32windowcontext.cpp b/src/core/contexts/win32windowcontext.cpp
index 1b969cf..a41d110 100644
--- a/src/core/contexts/win32windowcontext.cpp
+++ b/src/core/contexts/win32windowcontext.cpp
@@ -5,13 +5,11 @@
 #include <QtCore/QHash>
 #include <QtCore/QScopeGuard>
 #include <QtCore/QTimer>
+#include <QtCore/QDateTime>
 #include <QtGui/QGuiApplication>
 #include <QtGui/QPainter>
 #include <QtGui/QPalette>
-#include <QtGui/QStyleHints>
 
-#include <QtCore/private/qwinregistry_p.h>
-#include <QtCore/private/qsystemlibrary_p.h>
 #include <QtGui/private/qhighdpiscaling_p.h>
 #if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
 #  include <QtGui/private/qguiapplication_p.h>
@@ -23,44 +21,12 @@
 #  include <QtGui/qpa/qplatformwindow_p.h>
 #endif
 
-#include <shellscalingapi.h>
-#include <dwmapi.h>
-#include <timeapi.h>
+#include <QWKCore/qwkconfig.h>
 
 #include "qwkglobal_p.h"
-
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-Q_DECLARE_METATYPE(QMargins)
-#endif
+#include "qwkwindowsextra_p.h"
 
 namespace QWK {
-
-    enum _DWMWINDOWATTRIBUTE {
-        // [set] BOOL, Allows the use of host backdrop brushes for the window.
-        _DWMWA_USE_HOSTBACKDROPBRUSH = 17,
-
-        // Undocumented, the same with DWMWA_USE_IMMERSIVE_DARK_MODE, but available on systems
-        // before Win10 20H1.
-        _DWMWA_USE_IMMERSIVE_DARK_MODE_BEFORE_20H1 = 19,
-
-        // [set] BOOL, Allows a window to either use the accent color, or dark, according to the
-        // user Color Mode preferences.
-        _DWMWA_USE_IMMERSIVE_DARK_MODE = 20,
-
-        // [set] WINDOW_CORNER_PREFERENCE, Controls the policy that rounds top-level window corners
-        _DWMWA_WINDOW_CORNER_PREFERENCE = 33,
-
-        // [get] UINT, width of the visible border around a thick frame window
-        _DWMWA_VISIBLE_FRAME_BORDER_THICKNESS = 37,
-
-        // [get, set] SYSTEMBACKDROP_TYPE, Controls the system-drawn backdrop material of a window,
-        // including behind the non-client area.
-        _DWMWA_SYSTEMBACKDROP_TYPE = 38,
-
-        // Undocumented, use this value to enable Mica material on Win11 21H2. You should use
-        // DWMWA_SYSTEMBACKDROP_TYPE instead on Win11 22H2 and newer.
-        _DWMWA_MICA_EFFECT = 1029
-    };
 
     // The thickness of an auto-hide taskbar in pixels.
     static constexpr const quint8 kAutoHideTaskBarThickness = 2;
@@ -79,304 +45,25 @@
     // Original Qt window proc function
     static WNDPROC g_qtWindowProc = nullptr;
 
-    struct DynamicApis {
-        static const DynamicApis &instance() {
-            static const DynamicApis inst{};
-            return inst;
-        }
-
-        //        template <typename T>
-        //        struct DefaultFunc;
-        //
-        //        template <typename Return, typename... Args>
-        //        struct DefaultFunc<Return(QT_WIN_CALLBACK *)(Args...)> {
-        //            static Return STDAPICALLTYPE func(Args...) {
-        //                return Return{};
-        //            }
-        //        };
-        //
-        // #define DYNAMIC_API_DECLARE(NAME) decltype(&::NAME) p##NAME =
-        // DefaultFunc<decltype(&::NAME)>::func
-
-#define DYNAMIC_API_DECLARE(NAME) decltype(&::NAME) p##NAME = nullptr
-
-        DYNAMIC_API_DECLARE(DwmFlush);
-        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);
-        DYNAMIC_API_DECLARE(timeGetDevCaps);
-        DYNAMIC_API_DECLARE(timeBeginPeriod);
-        DYNAMIC_API_DECLARE(timeEndPeriod);
-
-#undef DYNAMIC_API_DECLARE
-
-    private:
-        DynamicApis() {
-#define DYNAMIC_API_RESOLVE(DLL, NAME)                                                             \
-    p##NAME = reinterpret_cast<decltype(p##NAME)>(DLL.resolve(#NAME))
-
-            QSystemLibrary user32(QStringLiteral("user32"));
-            DYNAMIC_API_RESOLVE(user32, GetDpiForWindow);
-            DYNAMIC_API_RESOLVE(user32, GetSystemMetricsForDpi);
-
-            QSystemLibrary shcore(QStringLiteral("shcore"));
-            DYNAMIC_API_RESOLVE(shcore, GetDpiForMonitor);
-
-            QSystemLibrary dwmapi(QStringLiteral("dwmapi"));
-            DYNAMIC_API_RESOLVE(dwmapi, DwmFlush);
-            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);
-            DYNAMIC_API_RESOLVE(winmm, timeBeginPeriod);
-            DYNAMIC_API_RESOLVE(winmm, timeEndPeriod);
-
-#undef DYNAMIC_API_RESOLVE
-        }
-
-        ~DynamicApis() = default;
-
-        Q_DISABLE_COPY_MOVE(DynamicApis)
-    };
-
-    static inline constexpr bool operator==(const POINT &lhs, const POINT &rhs) noexcept {
-        return ((lhs.x == rhs.x) && (lhs.y == rhs.y));
-    }
-
-    static inline constexpr bool operator!=(const POINT &lhs, const POINT &rhs) noexcept {
-        return !operator==(lhs, rhs);
-    }
-
-    static inline constexpr bool operator==(const SIZE &lhs, const SIZE &rhs) noexcept {
-        return ((lhs.cx == rhs.cx) && (lhs.cy == rhs.cy));
-    }
-
-    static inline constexpr bool operator!=(const SIZE &lhs, const SIZE &rhs) noexcept {
-        return !operator==(lhs, rhs);
-    }
-
-    static inline constexpr bool operator>(const SIZE &lhs, const SIZE &rhs) noexcept {
-        return ((lhs.cx * lhs.cy) > (rhs.cx * rhs.cy));
-    }
-
-    static inline constexpr bool operator>=(const SIZE &lhs, const SIZE &rhs) noexcept {
-        return (operator>(lhs, rhs) || operator==(lhs, rhs));
-    }
-
-    static inline constexpr bool operator<(const SIZE &lhs, const SIZE &rhs) noexcept {
-        return (operator!=(lhs, rhs) && !operator>(lhs, rhs));
-    }
-
-    static inline constexpr bool operator<=(const SIZE &lhs, const SIZE &rhs) noexcept {
-        return (operator<(lhs, rhs) || operator==(lhs, rhs));
-    }
-
-    static inline constexpr bool operator==(const RECT &lhs, const RECT &rhs) noexcept {
-        return ((lhs.left == rhs.left) && (lhs.top == rhs.top) && (lhs.right == rhs.right) &&
-                (lhs.bottom == rhs.bottom));
-    }
-
-    static inline constexpr bool operator!=(const RECT &lhs, const RECT &rhs) noexcept {
-        return !operator==(lhs, rhs);
-    }
-
-    static inline constexpr QPoint point2qpoint(const POINT &point) {
-        return QPoint{int(point.x), int(point.y)};
-    }
-
-    static inline constexpr POINT qpoint2point(const QPoint &point) {
-        return POINT{LONG(point.x()), LONG(point.y())};
-    }
-
-    static inline constexpr QSize size2qsize(const SIZE &size) {
-        return QSize{int(size.cx), int(size.cy)};
-    }
-
-    static inline constexpr SIZE qsize2size(const QSize &size) {
-        return SIZE{LONG(size.width()), LONG(size.height())};
-    }
-
-    static inline constexpr QRect rect2qrect(const RECT &rect) {
-        return QRect{
-            QPoint{int(rect.left),        int(rect.top)         },
-            QSize{int(RECT_WIDTH(rect)), int(RECT_HEIGHT(rect))}
-        };
-    }
-
-    static inline constexpr RECT qrect2rect(const QRect &qrect) {
-        return RECT{LONG(qrect.left()), LONG(qrect.top()), LONG(qrect.right()),
-                    LONG(qrect.bottom())};
-    }
-
-    static inline /*constexpr*/ QString hwnd2str(const WId windowId) {
-        // NULL handle is allowed here.
-        return QLatin1String("0x") +
-               QString::number(windowId, 16).toUpper().rightJustified(8, u'0');
-    }
-
-    static inline /*constexpr*/ QString hwnd2str(HWND hwnd) {
-        // NULL handle is allowed here.
-        return hwnd2str(reinterpret_cast<WId>(hwnd));
-    }
-
-    static inline bool isWin8OrGreater() {
-        static const bool result = IsWindows8OrGreater_Real();
-        return result;
-    }
-
-    static inline bool isWin8Point1OrGreater() {
-        static const bool result = IsWindows8Point1OrGreater_Real();
-        return result;
-    }
-
-    static inline bool isWin10OrGreater() {
-        static const bool result = IsWindows10OrGreater_Real();
-        return result;
-    }
-
-    static inline bool isWin11OrGreater() {
-        static const bool result = IsWindows11OrGreater_Real();
-        return result;
-    }
-
-    static inline bool isDwmCompositionEnabled() {
-        if (isWin8OrGreater()) {
-            return true;
-        }
-        const DynamicApis &apis = DynamicApis::instance();
-        if (!apis.pDwmIsCompositionEnabled) {
-            return false;
-        }
-        BOOL enabled = FALSE;
-        return SUCCEEDED(apis.pDwmIsCompositionEnabled(&enabled)) && enabled;
-    }
-
-    static inline bool isWindowFrameBorderColorized() {
-        const QWinRegistryKey registry(HKEY_CURRENT_USER, LR"(Software\Microsoft\Windows\DWM)");
-        if (!registry.isValid()) {
-            return false;
-        }
-        const auto value = registry.dwordValue(L"ColorPrevalence");
-        if (!value.second) {
-            return false;
-        }
-        return value.first;
-    }
-
-    static inline bool isDarkThemeActive() {
-#if QT_VERSION >= QT_VERSION_CHECK(6, 5, 0)
-        return QGuiApplication::styleHints()->colorScheme() == Qt::ColorScheme::Dark;
-#else
-        const QWinRegistryKey registry(
-            HKEY_CURRENT_USER, LR"(Software\Microsoft\Windows\CurrentVersion\Themes\Personalize)");
-        if (!registry.isValid()) {
-            return false;
-        }
-        const auto value = registry.dwordValue(L"AppsUseLightTheme");
-        if (!value.second) {
-            return false;
-        }
-        return !value.first;
+    static inline bool
+#if !QWINDOWKIT_CONFIG(ENABLE_WINDOWS_SYSTEM_BORDERS)
+        constexpr
 #endif
-    }
 
-    static inline bool isDarkWindowFrameEnabled(HWND hwnd) {
-        BOOL enabled = FALSE;
-        const DynamicApis &apis = DynamicApis::instance();
-        if (SUCCEEDED(apis.pDwmGetWindowAttribute(hwnd, _DWMWA_USE_IMMERSIVE_DARK_MODE, &enabled,
-                                                  sizeof(enabled)))) {
-            return enabled;
-        } else if (SUCCEEDED(apis.pDwmGetWindowAttribute(hwnd,
-                                                         _DWMWA_USE_IMMERSIVE_DARK_MODE_BEFORE_20H1,
-                                                         &enabled, sizeof(enabled)))) {
-            return enabled;
-        } else {
-            return false;
-        }
-    }
-
-    static inline QColor getAccentColor() {
-#if QT_VERSION >= QT_VERSION_CHECK(6, 6, 0)
-        return QGuiApplication::palette().color(QPalette::Accent);
+        isSystemBorderEnabled() {
+        return
+#if QWINDOWKIT_CONFIG(ENABLE_WINDOWS_SYSTEM_BORDERS)
+            isWin10OrGreater()
 #else
-        const QWinRegistryKey registry(HKEY_CURRENT_USER, LR"(Software\Microsoft\Windows\DWM)");
-        if (!registry.isValid()) {
-            return {};
-        }
-        const auto value = registry.dwordValue(L"AccentColor");
-        if (!value.second) {
-            return {};
-        }
-        // The retrieved value is in the #AABBGGRR format, we need to
-        // convert it to the #AARRGGBB format which Qt expects.
-        const QColor abgr = QColor::fromRgba(value.first);
-        if (!abgr.isValid()) {
-            return {};
-        }
-        return QColor::fromRgb(abgr.blue(), abgr.green(), abgr.red(), abgr.alpha());
+            false
 #endif
+                ;
     }
 
     static inline void triggerFrameChange(HWND hwnd) {
         ::SetWindowPos(hwnd, nullptr, 0, 0, 0, 0,
                        SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_NOOWNERZORDER |
                            SWP_FRAMECHANGED);
-    }
-
-    static inline quint32 getDpiForWindow(HWND hwnd) {
-        const DynamicApis &apis = DynamicApis::instance();
-        if (apis.pGetDpiForWindow) {         // Win10
-            return apis.pGetDpiForWindow(hwnd);
-        } else if (apis.pGetDpiForMonitor) { // Win8.1
-            HMONITOR monitor = ::MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST);
-            UINT dpiX{0};
-            UINT dpiY{0};
-            apis.pGetDpiForMonitor(monitor, MDT_EFFECTIVE_DPI, &dpiX, &dpiY);
-            return dpiX;
-        } else { // Win2K
-            HDC hdc = ::GetDC(nullptr);
-            const int dpiX = ::GetDeviceCaps(hdc, LOGPIXELSX);
-            // const int dpiY = ::GetDeviceCaps(hdc, LOGPIXELSY);
-            ::ReleaseDC(nullptr, hdc);
-            return quint32(dpiX);
-        }
-    }
-
-    static inline quint32 getSystemMetricsForDpi(int index, quint32 dpi) {
-        const DynamicApis &apis = DynamicApis::instance();
-        if (apis.pGetSystemMetricsForDpi) {
-            return ::GetSystemMetricsForDpi(index, dpi);
-        }
-        return ::GetSystemMetrics(index);
-    }
-
-    static inline quint32 getWindowFrameBorderThickness(HWND hwnd) {
-        const DynamicApis &apis = DynamicApis::instance();
-        if (UINT result = 0; SUCCEEDED(apis.pDwmGetWindowAttribute(
-                hwnd, _DWMWA_VISIBLE_FRAME_BORDER_THICKNESS, &result, sizeof(result)))) {
-            return result;
-        }
-        return getSystemMetricsForDpi(SM_CXBORDER, getDpiForWindow(hwnd));
-    }
-
-    static inline quint32 getResizeBorderThickness(HWND hwnd) {
-        const quint32 dpi = getDpiForWindow(hwnd);
-        return getSystemMetricsForDpi(SM_CXSIZEFRAME, dpi) +
-               getSystemMetricsForDpi(SM_CXPADDEDBORDER, dpi);
-    }
-
-    static inline quint32 getTitleBarHeight(HWND hwnd) {
-        const quint32 dpi = getDpiForWindow(hwnd);
-        return getSystemMetricsForDpi(SM_CYCAPTION, dpi) +
-               getSystemMetricsForDpi(SM_CXSIZEFRAME, dpi) +
-               getSystemMetricsForDpi(SM_CXPADDEDBORDER, dpi);
     }
 
     static void setInternalWindowFrameMargins(QWindow *window, const QMargins &margins) {
@@ -714,8 +401,8 @@
             return false;
         }
 
-        static WindowsNativeEventFilter *instance;
-        static Win32WindowContext *lastMessageContext;
+        static inline WindowsNativeEventFilter *instance = nullptr;
+        static inline Win32WindowContext *lastMessageContext = nullptr;
 
         static inline void install() {
             if (instance) {
@@ -732,9 +419,6 @@
             instance = nullptr;
         }
     };
-
-    WindowsNativeEventFilter *WindowsNativeEventFilter::instance = nullptr;
-    Win32WindowContext *WindowsNativeEventFilter::lastMessageContext = nullptr;
 
     // https://github.com/qt/qtbase/blob/e26a87f1ecc40bc8c6aa5b889fce67410a57a702/src/plugins/platforms/windows/qwindowscontext.cpp#L1025
     // We can see from the source code that Qt will filter out some messages first and then send the
@@ -823,7 +507,7 @@
     static inline void addManagedWindow(QWindow *window, HWND hWnd, Win32WindowContext *ctx) {
         const auto margins = [hWnd]() -> QMargins {
             const auto titleBarHeight = int(getTitleBarHeight(hWnd));
-            if (isWin10OrGreater()) {
+            if (isSystemBorderEnabled()) {
                 return {0, -titleBarHeight, 0, 0};
             } else {
                 const auto frameSize = int(getResizeBorderThickness(hWnd));
@@ -886,6 +570,7 @@
             case RaiseWindowHook: {
                 if (!windowId)
                     return;
+                m_delegate->setWindowVisible(m_host, true);
                 const auto hwnd = reinterpret_cast<HWND>(windowId);
                 bringWindowToFront(hwnd);
                 return;
@@ -907,48 +592,6 @@
                 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 (!windowId)
-                        return;
-                    if (newVar.toBool()) {
-                        // TODO: set off
-                    } else {
-                        // TODO: set on
-                    }
-                } else if (key == QStringLiteral("mica-material")) {
-                    if (!windowId || !isWin11OrGreater())
-                        return;
-                    const auto hwnd = reinterpret_cast<HWND>(windowId);
-                    if (newVar.toBool()) {
-                        /*
-
-                        // We need to extend the window frame into the whole client area to be able
-                        // to see the blurred window background.
-                        static constexpr const MARGINS margins = {-1, -1, -1, -1};
-                        ::DwmExtendFrameIntoClientArea(hwnd, &margins);
-
-                        // Use official DWM API to enable Mica/Mica Alt, available since Windows 11
-                        // (10.0.22000).
-                        const DWM_SYSTEMBACKDROP_TYPE blurType =
-                            DWMSBT_MAINWINDOW; // This one is Mica, if you want to enable Mica Alt,
-                                               // use DWMSBT_TABBEDWINDOW instead.
-                        DynamicApis::instance().pDwmSetWindowAttribute(
-                            hwnd, DWMWA_SYSTEMBACKDROP_TYPE, &blurType, sizeof(blurType));
-
-                        */
-                    } else {
-                        // TODO: set off
-                    }
-                }
-                return;
-            }
-
             case DefaultColorsHook: {
                 auto &map = *static_cast<QMap<QString, QColor> *>(data);
                 map.clear();
@@ -960,6 +603,7 @@
             }
 
             case DrawWindows10BorderHook: {
+#if QWINDOWKIT_CONFIG(ENABLE_WINDOWS_SYSTEM_BORDERS)
                 if (!windowId)
                     return;
 
@@ -970,7 +614,7 @@
                 const auto hwnd = reinterpret_cast<HWND>(windowId);
 
                 QPen pen;
-                pen.setWidth(getWindowFrameBorderThickness(hwnd) * 2);
+                pen.setWidth(int(getWindowFrameBorderThickness(hwnd)) * 2);
 
                 const bool dark = isDarkThemeActive() && isDarkWindowFrameEnabled(hwnd);
                 if (m_delegate->isWindowActive(m_host)) {
@@ -990,7 +634,7 @@
                 }
                 painter.save();
 
-                // We needs anti-aliasing to give us better result.
+                // We need antialiasing to give us better result.
                 painter.setRenderHint(QPainter::Antialiasing);
 
                 painter.setPen(pen);
@@ -999,6 +643,33 @@
                     QPoint{m_windowHandle->width(), 0}
                 });
                 painter.restore();
+#endif
+                return;
+            }
+
+            case DrawWindows10BorderHook2: {
+#if QWINDOWKIT_CONFIG(ENABLE_WINDOWS_SYSTEM_BORDERS)
+                if (!m_windowHandle)
+                    return;
+
+                // https://github.com/microsoft/terminal/blob/71a6f26e6ece656084e87de1a528c4a8072eeabd/src/cascadia/WindowsTerminal/NonClientIslandWindow.cpp#L1025
+                // https://docs.microsoft.com/en-us/windows/win32/dwm/customframe#extending-the-client-frame
+                // Draw a black rectangle to make Windows native top border show
+
+                auto hWnd = reinterpret_cast<HWND>(windowId);
+                HDC hdc = ::GetDC(hWnd);
+                RECT windowRect{};
+                ::GetClientRect(hWnd, &windowRect);
+                RECT rcTopBorder = {
+                    0,
+                    0,
+                    RECT_WIDTH(windowRect),
+                    int(getWindowFrameBorderThickness(hWnd)),
+                };
+                ::FillRect(hdc, &rcTopBorder,
+                           reinterpret_cast<HBRUSH>(::GetStockObject(BLACK_BRUSH)));
+                ::ReleaseDC(hWnd, hdc);
+#endif
                 return;
             }
 
@@ -1008,12 +679,41 @@
         AbstractWindowContext::virtual_hook(id, data);
     }
 
-    bool Win32WindowContext::needBorderPainter() const {
-        return isWin10OrGreater() && !isWin11OrGreater();
-    }
+    QVariant Win32WindowContext::windowAttribute(const QString &key) const {
+        if (key == QStringLiteral("title-bar-rect")) {
+            if (!m_windowHandle)
+                return {};
 
-    int Win32WindowContext::borderThickness() const {
-        return getWindowFrameBorderThickness(reinterpret_cast<HWND>(windowId));
+            RECT frame{};
+            auto hwnd = reinterpret_cast<HWND>(windowId);
+            // According to MSDN, WS_OVERLAPPED is not allowed for AdjustWindowRect.
+            auto style = static_cast<DWORD>(::GetWindowLongPtrW(hwnd, GWL_STYLE) & ~WS_OVERLAPPED);
+            auto exStyle = static_cast<DWORD>(::GetWindowLongPtrW(hwnd, GWL_EXSTYLE));
+            const DynamicApis &apis = DynamicApis::instance();
+            if (apis.pAdjustWindowRectExForDpi) {
+                apis.pAdjustWindowRectExForDpi(&frame, style, FALSE, exStyle,
+                                               getDpiForWindow(hwnd));
+            } else {
+                ::AdjustWindowRectEx(&frame, style, FALSE, exStyle);
+            }
+            frame.left = std::abs(frame.left);
+            frame.top = std::abs(frame.top);
+            frame.right = std::abs(frame.right);
+            frame.bottom = std::abs(frame.bottom);
+            return QVariant::fromValue(rect2qrect(frame));
+        }
+
+        if (key == QStringLiteral("win10-border-needed")) {
+            return isSystemBorderEnabled() && !isWin11OrGreater();
+        }
+
+        if (key == QStringLiteral("border-thickness")) {
+            return m_windowHandle
+                       ? int(getWindowFrameBorderThickness(reinterpret_cast<HWND>(windowId)))
+                       : 0;
+        }
+
+        return AbstractWindowContext::windowAttribute(key);
     }
 
     void Win32WindowContext::winIdChanged() {
@@ -1031,15 +731,26 @@
         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));
+        if (!isSystemBorderEnabled()) {
+            static auto margins = QVariant::fromValue(QMargins(1, 1, 1, 1));
+
+            // If we remove the system border, the window will lose its shadow. If dwm is enabled,
+            // then you need to set at least 1px margins, otherwise the following operation will
+            // fail with no effect.
+            setWindowAttribute(QStringLiteral("extra-margins"), margins);
         }
-#endif
+
+        // We should disable WS_SYSMENU, otherwise the system button icons will be visible if mica
+        // is enabled and the title bar is transparent
+        {
+            auto style = ::GetWindowLongPtrW(hWnd, GWL_STYLE);
+            if (isSystemBorderEnabled()) {
+                ::SetWindowLongPtrW(hWnd, GWL_STYLE, style & (~WS_SYSMENU));
+            } else {
+                ::SetWindowLongPtrW(hWnd, GWL_STYLE,
+                                    (style | WS_THICKFRAME | WS_CAPTION) & (~WS_SYSMENU));
+            }
+        }
 
         // Add managed window
         addManagedWindow(m_windowHandle, hWnd, this);
@@ -1093,12 +804,197 @@
             msg.wParam = wParam;
             msg.lParam = lParam;
             QT_NATIVE_EVENT_RESULT_TYPE res = 0;
-            if (dispatch(QByteArrayLiteral("windows_generic_MSG"), &msg, &res)) {
+            if (nativeDispatch(QByteArrayLiteral("windows_generic_MSG"), &msg, &res)) {
                 *result = LRESULT(res);
                 return true;
             }
         }
         return false; // Not handled
+    }
+
+    bool Win32WindowContext::windowAttributeChanged(const QString &key, const QVariant &attribute,
+                                                    const QVariant &oldAttribute) {
+        Q_UNUSED(oldAttribute)
+
+        const auto hwnd = reinterpret_cast<HWND>(m_windowHandle->winId());
+        const DynamicApis &apis = DynamicApis::instance();
+        static constexpr const MARGINS extendedMargins = {-1, -1, -1, -1};
+        const auto &restoreMargins = [this, &apis, hwnd]() {
+            auto margins = qmargins2margins(
+                m_windowAttributes.value(QStringLiteral("extra-margins")).value<QMargins>());
+            apis.pDwmExtendFrameIntoClientArea(hwnd, &margins);
+        };
+
+        if (key == QStringLiteral("extra-margins")) {
+            auto margins = qmargins2margins(attribute.value<QMargins>());
+            return apis.pDwmExtendFrameIntoClientArea(hwnd, &margins) == S_OK;
+        }
+
+        if (key == QStringLiteral("dark-mode")) {
+            if (!isWin101809OrGreater()) {
+                return false;
+            }
+
+            BOOL enable = attribute.toBool();
+            if (isWin101903OrGreater()) {
+                apis.pSetPreferredAppMode(enable ? PAM_AUTO : PAM_DEFAULT);
+            } else {
+                apis.pAllowDarkModeForApp(enable);
+            }
+            for (const auto attr : {
+                     _DWMWA_USE_IMMERSIVE_DARK_MODE_BEFORE_20H1,
+                     _DWMWA_USE_IMMERSIVE_DARK_MODE,
+                 }) {
+                apis.pDwmSetWindowAttribute(hwnd, attr, &enable, sizeof(enable));
+            }
+
+            apis.pFlushMenuThemes();
+            return true;
+        }
+
+        // For Win11 or later
+        if (key == QStringLiteral("mica")) {
+            if (!isWin11OrGreater()) {
+                return false;
+            }
+            if (attribute.toBool()) {
+                // We need to extend the window frame into the whole client area to be able
+                // to see the blurred window background.
+                apis.pDwmExtendFrameIntoClientArea(hwnd, &extendedMargins);
+                if (isWin1122H2OrGreater()) {
+                    // Use official DWM API to enable Mica, available since Windows 11 22H2
+                    // (10.0.22621).
+                    const _DWM_SYSTEMBACKDROP_TYPE backdropType = _DWMSBT_MAINWINDOW;
+                    apis.pDwmSetWindowAttribute(hwnd, _DWMWA_SYSTEMBACKDROP_TYPE, &backdropType,
+                                                sizeof(backdropType));
+                } else {
+                    // Use undocumented DWM API to enable Mica, available since Windows 11
+                    // (10.0.22000).
+                    const BOOL enable = TRUE;
+                    apis.pDwmSetWindowAttribute(hwnd, _DWMWA_MICA_EFFECT, &enable, sizeof(enable));
+                }
+            } else {
+                if (isWin1122H2OrGreater()) {
+                    const _DWM_SYSTEMBACKDROP_TYPE backdropType = _DWMSBT_AUTO;
+                    apis.pDwmSetWindowAttribute(hwnd, _DWMWA_SYSTEMBACKDROP_TYPE, &backdropType,
+                                                sizeof(backdropType));
+                } else {
+                    const BOOL enable = FALSE;
+                    apis.pDwmSetWindowAttribute(hwnd, _DWMWA_MICA_EFFECT, &enable, sizeof(enable));
+                }
+                restoreMargins();
+            }
+            return true;
+        }
+
+        if (key == QStringLiteral("mica-alt")) {
+            if (!isWin1122H2OrGreater()) {
+                return false;
+            }
+            if (attribute.toBool()) {
+                // We need to extend the window frame into the whole client area to be able
+                // to see the blurred window background.
+                apis.pDwmExtendFrameIntoClientArea(hwnd, &extendedMargins);
+                // Use official DWM API to enable Mica Alt, available since Windows 11 22H2
+                // (10.0.22621).
+                const _DWM_SYSTEMBACKDROP_TYPE backdropType = _DWMSBT_TABBEDWINDOW;
+                apis.pDwmSetWindowAttribute(hwnd, _DWMWA_SYSTEMBACKDROP_TYPE, &backdropType,
+                                            sizeof(backdropType));
+            } else {
+                const _DWM_SYSTEMBACKDROP_TYPE backdropType = _DWMSBT_AUTO;
+                apis.pDwmSetWindowAttribute(hwnd, _DWMWA_SYSTEMBACKDROP_TYPE, &backdropType,
+                                            sizeof(backdropType));
+                restoreMargins();
+            }
+            return true;
+        }
+
+        if (key == QStringLiteral("acrylic-material")) {
+            if (!isWin11OrGreater()) {
+                return false;
+            }
+            if (attribute.toBool()) {
+                // We need to extend the window frame into the whole client area to be able
+                // to see the blurred window background.
+                apis.pDwmExtendFrameIntoClientArea(hwnd, &extendedMargins);
+
+                const _DWM_SYSTEMBACKDROP_TYPE backdropType = _DWMSBT_TRANSIENTWINDOW;
+                apis.pDwmSetWindowAttribute(hwnd, _DWMWA_SYSTEMBACKDROP_TYPE, &backdropType,
+                                            sizeof(backdropType));
+
+                // PRIVATE API REFERENCE:
+                //     QColor gradientColor = {};
+                //     ACCENT_POLICY policy{};
+                //     policy.dwAccentState = ACCENT_ENABLE_ACRYLICBLURBEHIND;
+                //     policy.dwAccentFlags = ACCENT_ENABLE_ACRYLIC_WITH_LUMINOSITY;
+                //     // This API expects the #AABBGGRR format.
+                //     policy.dwGradientColor =
+                //         DWORD(qRgba(gradientColor.blue(), gradientColor.green(),
+                //                     gradientColor.red(), gradientColor.alpha()));
+                //     WINDOWCOMPOSITIONATTRIBDATA wcad{};
+                //     wcad.Attrib = WCA_ACCENT_POLICY;
+                //     wcad.pvData = &policy;
+                //     wcad.cbData = sizeof(policy);
+                //     apis.pSetWindowCompositionAttribute(hwnd, &wcad);
+            } else {
+                const _DWM_SYSTEMBACKDROP_TYPE backdropType = _DWMSBT_AUTO;
+                apis.pDwmSetWindowAttribute(hwnd, _DWMWA_SYSTEMBACKDROP_TYPE, &backdropType,
+                                            sizeof(backdropType));
+
+                // PRIVATE API REFERENCE:
+                //     ACCENT_POLICY policy{};
+                //     policy.dwAccentState = ACCENT_DISABLED;
+                //     policy.dwAccentFlags = ACCENT_NONE;
+                //     WINDOWCOMPOSITIONATTRIBDATA wcad{};
+                //     wcad.Attrib = WCA_ACCENT_POLICY;
+                //     wcad.pvData = &policy;
+                //     wcad.cbData = sizeof(policy);
+                //     apis.pSetWindowCompositionAttribute(hwnd, &wcad);
+
+                restoreMargins();
+            }
+            return true;
+        }
+
+        if (key == QStringLiteral("dwm-blur")) {
+            if (attribute.toBool()) {
+                // We can't extend the window frame for this effect.
+                restoreMargins();
+                if (isWin8OrGreater()) {
+                    ACCENT_POLICY policy{};
+                    policy.dwAccentState = ACCENT_ENABLE_BLURBEHIND;
+                    policy.dwAccentFlags = ACCENT_NONE;
+                    WINDOWCOMPOSITIONATTRIBDATA wcad{};
+                    wcad.Attrib = WCA_ACCENT_POLICY;
+                    wcad.pvData = &policy;
+                    wcad.cbData = sizeof(policy);
+                    apis.pSetWindowCompositionAttribute(hwnd, &wcad);
+                } else {
+                    DWM_BLURBEHIND bb{};
+                    bb.fEnable = TRUE;
+                    bb.dwFlags = DWM_BB_ENABLE;
+                    apis.pDwmEnableBlurBehindWindow(hwnd, &bb);
+                }
+            } else {
+                if (isWin8OrGreater()) {
+                    ACCENT_POLICY policy{};
+                    policy.dwAccentState = ACCENT_DISABLED;
+                    policy.dwAccentFlags = ACCENT_NONE;
+                    WINDOWCOMPOSITIONATTRIBDATA wcad{};
+                    wcad.Attrib = WCA_ACCENT_POLICY;
+                    wcad.pvData = &policy;
+                    wcad.cbData = sizeof(policy);
+                    apis.pSetWindowCompositionAttribute(hwnd, &wcad);
+                } else {
+                    DWM_BLURBEHIND bb{};
+                    bb.fEnable = FALSE;
+                    bb.dwFlags = DWM_BB_ENABLE;
+                    apis.pDwmEnableBlurBehindWindow(hwnd, &bb);
+                }
+            }
+            return true;
+        }
+        return false;
     }
 
     QWK_USED static constexpr const struct {
@@ -1433,12 +1329,12 @@
                                                  LPARAM lParam, LRESULT *result) {
         switch (message) {
             case WM_SHOWWINDOW: {
-                if (!centered) {
+                if (!initialCentered) {
                     // 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) {
-                        centered = true;
+                        initialCentered = true;
                         moveWindowToDesktopCenter(hWnd);
                     }
                 }
@@ -1626,7 +1522,7 @@
                 int frameSize = getResizeBorderThickness(hWnd);
                 bool isTop = (nativeLocalPos.y < frameSize);
 
-                if (isWin10OrGreater()) {
+                if (isSystemBorderEnabled()) {
                     // This will handle the left, right and bottom parts of the frame
                     // because we didn't change them.
                     LRESULT originalHitTestResult = ::DefWindowProcW(hWnd, WM_NCHITTEST, 0, lParam);
@@ -1754,7 +1650,7 @@
                 break;
         }
 
-        if (!isWin10OrGreater()) {
+        if (!isSystemBorderEnabled()) {
             switch (message) {
                 case WM_NCUAHDRAWCAPTION:
                 case WM_NCUAHDRAWFRAME: {
@@ -1786,11 +1682,7 @@
                         // window activation state change.
                         *result = ::DefWindowProcW(hWnd, WM_NCACTIVATE, wParam, -1);
                     } else {
-                        if (wParam) {
-                            *result = FALSE;
-                        } else {
-                            *result = TRUE;
-                        }
+                        *result = TRUE;
                     }
                     return true;
                 }
@@ -1909,7 +1801,7 @@
         // and align it with the upper-left corner of our new client area".
         const auto clientRect = wParam ? &(reinterpret_cast<LPNCCALCSIZE_PARAMS>(lParam))->rgrc[0]
                                        : reinterpret_cast<LPRECT>(lParam);
-        if (isWin10OrGreater()) {
+        if (isSystemBorderEnabled()) {
             // Store the original top margin before the default window procedure applies the
             // default frame.
             const LONG originalTop = clientRect->top;
@@ -1936,6 +1828,7 @@
             // technique to bring the top border back.
             clientRect->top = originalTop;
         }
+
         const bool max = IsMaximized(hWnd);
         const bool full = isFullScreen(hWnd);
         // We don't need this correction when we're fullscreen. We will
@@ -1950,7 +1843,7 @@
             // a window when it's maximized unless you restore it).
             const quint32 frameSize = getResizeBorderThickness(hWnd);
             clientRect->top += frameSize;
-            if (!isWin10OrGreater()) {
+            if (!isSystemBorderEnabled()) {
                 clientRect->bottom -= frameSize;
                 clientRect->left += frameSize;
                 clientRect->right -= frameSize;
@@ -2053,10 +1946,11 @@
         const auto getNativeGlobalPosFromKeyboard = [hWnd]() -> POINT {
             const bool maxOrFull = IsMaximized(hWnd) || isFullScreen(hWnd);
             const quint32 frameSize = getResizeBorderThickness(hWnd);
-            const quint32 horizontalOffset = ((maxOrFull || !isWin10OrGreater()) ? 0 : frameSize);
+            const quint32 horizontalOffset =
+                ((maxOrFull || !isSystemBorderEnabled()) ? 0 : frameSize);
             const auto verticalOffset = [hWnd, maxOrFull, frameSize]() -> quint32 {
                 const quint32 titleBarHeight = getTitleBarHeight(hWnd);
-                if (!isWin10OrGreater()) {
+                if (!isSystemBorderEnabled()) {
                     return titleBarHeight;
                 }
                 if (isWin11OrGreater()) {

--
Gitblit v1.9.1