From c837319767bb609c6ec806336e49a347c77b11d3 Mon Sep 17 00:00:00 2001
From: Sine Striker <trueful@163.com>
Date: 周五, 22 12月 2023 21:30:53 +0800
Subject: [PATCH] Add non-system-border option on Windows

---
 src/core/contexts/win32windowcontext.cpp |   55 +++++++++++++++++++++++++++++++++----------------------
 1 files changed, 33 insertions(+), 22 deletions(-)

diff --git a/src/core/contexts/win32windowcontext.cpp b/src/core/contexts/win32windowcontext.cpp
index af84241..ea572fb 100644
--- a/src/core/contexts/win32windowcontext.cpp
+++ b/src/core/contexts/win32windowcontext.cpp
@@ -21,6 +21,8 @@
 #  include <QtGui/qpa/qplatformwindow_p.h>
 #endif
 
+#include <QWKCore/qwkconfig.h>
+
 #include "qwkglobal_p.h"
 #include "qwkwindowsextra_p.h"
 
@@ -55,7 +57,7 @@
 
     static inline quint32 getDpiForWindow(HWND hwnd) {
         const DynamicApis &apis = DynamicApis::instance();
-        if (apis.pGetDpiForWindow) { // Win10
+        if (apis.pGetDpiForWindow) {         // Win10
             return apis.pGetDpiForWindow(hwnd);
         } else if (apis.pGetDpiForMonitor) { // Win8.1
             HMONITOR monitor = ::MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST);
@@ -712,10 +714,20 @@
         auto winId = m_windowHandle->winId();
         auto hWnd = reinterpret_cast<HWND>(winId);
 
-        if (!isWin10OrGreater()) {
+#if QWINDOWKIT_CONFIG(ENABLE_WINDOWS_SYSTEM_BORDER)
+        if (!isWin10OrGreater())
+#endif
+        {
             static constexpr const MARGINS margins = {1, 1, 1, 1};
             DynamicApis::instance().pDwmExtendFrameIntoClientArea(hWnd, &margins);
         }
+
+#if !QWINDOWKIT_CONFIG(ENABLE_WINDOWS_SYSTEM_BORDER)
+        {
+            DWORD style = ::GetWindowLongW(hWnd, GWL_STYLE);
+            ::SetWindowLongW(hWnd, GWL_STYLE, style | WS_THICKFRAME | WS_CAPTION);
+        }
+#endif
 
 #if QT_VERSION < QT_VERSION_CHECK(6, 5, 0)
         for (const auto attr : {
@@ -789,8 +801,11 @@
 
     bool Win32WindowContext::windowAttributeChanged(const QString &key, const QVariant &attribute,
                                                     const QVariant &oldAttribute) {
-        const auto hwnd = reinterpret_cast<HWND>(window->winId());
+        const auto hwnd = reinterpret_cast<HWND>(m_windowHandle->winId());
         const DynamicApis &apis = DynamicApis::instance();
+        static constexpr const MARGINS extendMargins = {-1, -1, -1, -1};
+        static const auto defaultMargins =
+            isWin10OrGreater() ? MARGINS{0, 0, 0, 0} : MARGINS{1, 1, 1, 1};
         if (key == QStringLiteral("mica")) {
             if (!isWin11OrGreater()) {
                 return false;
@@ -798,8 +813,7 @@
             if (attribute.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};
-                apis.pDwmExtendFrameIntoClientArea(hwnd, &margins);
+                apis.pDwmExtendFrameIntoClientArea(hwnd, &extendMargins);
                 if (isWin1122H2OrGreater()) {
                     // Use official DWM API to enable Mica, available since Windows 11 22H2
                     // (10.0.22621).
@@ -821,8 +835,7 @@
                     const BOOL enable = FALSE;
                     apis.pDwmSetWindowAttribute(hwnd, _DWMWA_MICA_EFFECT, &enable, sizeof(enable));
                 }
-                static constexpr const MARGINS margins = {0, 0, 0, 0};
-                apis.pDwmExtendFrameIntoClientArea(hwnd, &margins);
+                apis.pDwmExtendFrameIntoClientArea(hwnd, &defaultMargins);
             }
             return true;
         } else if (key == QStringLiteral("mica-alt")) {
@@ -832,8 +845,7 @@
             if (attribute.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};
-                apis.pDwmExtendFrameIntoClientArea(hwnd, &margins);
+                apis.pDwmExtendFrameIntoClientArea(hwnd, &extendMargins);
                 // Use official DWM API to enable Mica Alt, available since Windows 11 22H2
                 // (10.0.22621).
                 const _DWM_SYSTEMBACKDROP_TYPE backdropType = _DWMSBT_TABBEDWINDOW;
@@ -843,8 +855,7 @@
                 const _DWM_SYSTEMBACKDROP_TYPE backdropType = _DWMSBT_AUTO;
                 apis.pDwmSetWindowAttribute(hwnd, _DWMWA_SYSTEMBACKDROP_TYPE, &backdropType,
                                             sizeof(backdropType));
-                static constexpr const MARGINS margins = {0, 0, 0, 0};
-                apis.pDwmExtendFrameIntoClientArea(hwnd, &margins);
+                apis.pDwmExtendFrameIntoClientArea(hwnd, &defaultMargins);
             }
             return true;
         } else if (key == QStringLiteral("acrylic-material")) {
@@ -854,8 +865,7 @@
             if (attribute.userType() == QMetaType::QColor) {
                 // 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};
-                apis.pDwmExtendFrameIntoClientArea(hwnd, &margins);
+                apis.pDwmExtendFrameIntoClientArea(hwnd, &extendMargins);
                 if (isWin11OrGreater()) {
                     const _DWM_SYSTEMBACKDROP_TYPE backdropType = _DWMSBT_TRANSIENTWINDOW;
                     apis.pDwmSetWindowAttribute(hwnd, _DWMWA_SYSTEMBACKDROP_TYPE, &backdropType,
@@ -891,16 +901,14 @@
                     wcad.cbData = sizeof(policy);
                     apis.pSetWindowCompositionAttribute(hwnd, &wcad);
                 }
-                static constexpr const MARGINS margins = {0, 0, 0, 0};
-                apis.pDwmExtendFrameIntoClientArea(hwnd, &margins);
+                apis.pDwmExtendFrameIntoClientArea(hwnd, &defaultMargins);
             }
             return true;
         } else if (key == QStringLiteral("dwm-blur")) {
             if (attribute.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};
-                apis.pDwmExtendFrameIntoClientArea(hwnd, &margins);
+                apis.pDwmExtendFrameIntoClientArea(hwnd, &extendMargins);
                 if (isWin8OrGreater()) {
                     ACCENT_POLICY policy{};
                     policy.dwAccentState = ACCENT_ENABLE_BLURBEHIND;
@@ -913,8 +921,7 @@
                 } else {
                     DWM_BLURBEHIND bb{};
                     bb.fEnable = TRUE;
-                    bb.fTransitionOnMaximized = TRUE;
-                    bb.dwFlags = DWM_BB_ENABLE | DWM_BB_TRANSITIONONMAXIMIZED;
+                    bb.dwFlags = DWM_BB_ENABLE;
                     apis.pDwmEnableBlurBehindWindow(hwnd, &bb);
                 }
             } else {
@@ -933,8 +940,7 @@
                     bb.dwFlags = DWM_BB_ENABLE;
                     apis.pDwmEnableBlurBehindWindow(hwnd, &bb);
                 }
-                static constexpr const MARGINS margins = {0, 0, 0, 0};
-                apis.pDwmExtendFrameIntoClientArea(hwnd, &margins);
+                apis.pDwmExtendFrameIntoClientArea(hwnd, &defaultMargins);
             }
             return true;
         }
@@ -1466,6 +1472,7 @@
                 int frameSize = getResizeBorderThickness(hWnd);
                 bool isTop = (nativeLocalPos.y < frameSize);
 
+#if QWINDOWKIT_CONFIG(ENABLE_WINDOWS_SYSTEM_BORDER)
                 if (isWin10OrGreater()) {
                     // This will handle the left, right and bottom parts of the frame
                     // because we didn't change them.
@@ -1508,7 +1515,9 @@
                     }
                     *result = HTCLIENT;
                     return true;
-                } else {
+                } else
+#endif
+                {
                     if (full) {
                         *result = HTCLIENT;
                         return true;
@@ -1658,6 +1667,7 @@
         Q_UNUSED(message)
         Q_UNUSED(this)
 
+#if QWINDOWKIT_CONFIG(ENABLE_WINDOWS_SYSTEM_BORDER)
         // Windows鏄牴鎹繖涓秷鎭殑杩斿洖鍊兼潵璁剧疆绐楀彛鐨勫鎴峰尯锛堢獥鍙d腑鐪熸鏄剧ず鐨勫唴瀹癸級
         // 鍜岄潪瀹㈡埛鍖猴紙鏍囬鏍忋�佺獥鍙h竟妗嗐�佽彍鍗曟爮鍜岀姸鎬佹爮绛塛indows绯荤粺鑷鎻愪緵鐨勯儴鍒�
         // 锛屼笉杩囧浜嶲t鏉ヨ锛岄櫎浜嗘爣棰樻爮鍜岀獥鍙h竟妗嗭紝闈炲鎴峰尯鍩烘湰涔熼兘鏄嚜缁樼殑锛夌殑鑼�
@@ -1865,6 +1875,7 @@
                 }
             }
         }
+#endif
         // We should call this function only before the function returns.
         syncPaintEventWithDwm();
         // By returning WVR_REDRAW we can make the window resizing look

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