From 0586c98f90866e4bc9f0dfe73aefb0a07c56697e Mon Sep 17 00:00:00 2001
From: Sine Striker <trueful@163.com>
Date: 周二, 12 12月 2023 15:44:14 +0800
Subject: [PATCH] Add win10 border handler

---
 src/core/contexts/win32windowcontext.cpp |  187 +++++++++++++++++++++-------------------------
 1 files changed, 84 insertions(+), 103 deletions(-)

diff --git a/src/core/contexts/win32windowcontext.cpp b/src/core/contexts/win32windowcontext.cpp
index 22d9f1c..8ed1f39 100644
--- a/src/core/contexts/win32windowcontext.cpp
+++ b/src/core/contexts/win32windowcontext.cpp
@@ -29,6 +29,8 @@
 #include "nativeeventfilter.h"
 #include "qwkglobal_p.h"
 
+#include "win10borderhandler_p.h"
+
 #if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 Q_DECLARE_METATYPE(QMargins)
 #endif
@@ -65,7 +67,7 @@
     // The thickness of an auto-hide taskbar in pixels.
     static constexpr const quint8 kAutoHideTaskBarThickness = 2;
 
-    static constexpr const struct {
+    QWK_USED static constexpr const struct {
         const uint32_t activeLight = MAKE_RGBA_COLOR(110, 110, 110, 255);   // #6E6E6E
         const uint32_t activeDark = MAKE_RGBA_COLOR(51, 51, 51, 255);       // #333333
         const uint32_t inactiveLight = MAKE_RGBA_COLOR(167, 167, 167, 255); // #A7A7A7
@@ -357,44 +359,37 @@
         }
     }
 
-    static inline quint32 getWindowFrameBorderThickness(HWND hwnd) {
-        UINT result = 0;
+    static inline quint32 getSystemMetricsForDpi(int index, quint32 dpi) {
         const DynamicApis &apis = DynamicApis::instance();
-        if (SUCCEEDED(apis.pDwmGetWindowAttribute(hwnd, _DWMWA_VISIBLE_FRAME_BORDER_THICKNESS,
-                                                  &result, sizeof(result)))) {
-            return result;
-        } else {
-            const quint32 dpi = getDpiForWindow(hwnd);
-            result = quint32(std::round(qreal(1) * qreal(dpi) / qreal(USER_DEFAULT_SCREEN_DPI)));
+        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 DynamicApis &apis = DynamicApis::instance();
-        if (apis.pGetSystemMetricsForDpi) {
-            const quint32 dpi = getDpiForWindow(hwnd);
-            return apis.pGetSystemMetricsForDpi(SM_CXSIZEFRAME, dpi) +
-                   apis.pGetSystemMetricsForDpi(SM_CXPADDEDBORDER, dpi);
-        } else {
-            return ::GetSystemMetrics(SM_CXSIZEFRAME) + ::GetSystemMetrics(SM_CXPADDEDBORDER);
-        }
+        const quint32 dpi = getDpiForWindow(hwnd);
+        return getSystemMetricsForDpi(SM_CXSIZEFRAME, dpi) +
+               getSystemMetricsForDpi(SM_CXPADDEDBORDER, dpi);
     }
 
     static inline quint32 getTitleBarHeight(HWND hwnd) {
-        const auto captionHeight = [hwnd]() -> int {
-            const DynamicApis &apis = DynamicApis::instance();
-            if (apis.pGetSystemMetricsForDpi) {
-                const quint32 dpi = getDpiForWindow(hwnd);
-                return apis.pGetSystemMetricsForDpi(SM_CYCAPTION, dpi);
-            } else {
-                return ::GetSystemMetrics(SM_CYCAPTION);
-            }
-        }();
-        return captionHeight + getResizeBorderThickness(hwnd);
+        const quint32 dpi = getDpiForWindow(hwnd);
+        return getSystemMetricsForDpi(SM_CYCAPTION, dpi) +
+               getSystemMetricsForDpi(SM_CXSIZEFRAME, dpi) +
+               getSystemMetricsForDpi(SM_CXPADDEDBORDER, dpi);
     }
 
-    static inline void updateInternalWindowFrameMargins(HWND hwnd, QWindow *window) {
+    static void updateInternalWindowFrameMargins(HWND hwnd, QWindow *window) {
         const auto margins = [hwnd]() -> QMargins {
             const auto titleBarHeight = int(getTitleBarHeight(hwnd));
             if (isWin10OrGreater()) {
@@ -460,7 +455,7 @@
 #endif
     }
 
-    static inline void syncPaintEventWithDwm() {
+    static void syncPaintEventWithDwm() {
         // No need to sync with DWM if DWM composition is disabled.
         if (!isDwmCompositionEnabled()) {
             return;
@@ -505,9 +500,9 @@
         apis.ptimeEndPeriod(ms_granularity);
     }
 
-    static inline void showSystemMenu2(HWND hWnd, const POINT &pos, const bool selectFirstEntry,
-                                       const bool fixedSize) {
-        const HMENU hMenu = ::GetSystemMenu(hWnd, FALSE);
+    static void showSystemMenu2(HWND hWnd, const POINT &pos, const bool selectFirstEntry,
+                                const bool fixedSize) {
+        HMENU hMenu = ::GetSystemMenu(hWnd, FALSE);
         if (!hMenu) {
             // The corresponding window doesn't have a system menu, most likely due to the
             // lack of the "WS_SYSMENU" window style. This situation should not be treated
@@ -809,74 +804,13 @@
                 return;
             }
 
-            case NeedsDrawBordersHook: {
-                auto &result = *static_cast<bool *>(data);
-                result = isWin10OrGreater() && !isWin11OrGreater();
-                return;
-            }
-
-            case BorderThicknessHook: {
-                auto args = static_cast<void **>(data);
-                const bool requireNative = *static_cast<const bool *>(args[0]);
-                quint32 &thickness = *static_cast<quint32 *>(args[1]);
-                const auto hwnd = reinterpret_cast<HWND>(m_windowHandle->winId());
-                const auto nativeThickness = getWindowFrameBorderThickness(hwnd);
-                thickness = requireNative
-                                ? nativeThickness
-                                : QHighDpi::fromNativePixels(nativeThickness, m_windowHandle);
-                return;
-            }
-
-            case BorderColorsHook: {
-                auto arr = *reinterpret_cast<QList<QColor> *>(data);
-                arr.clear();
-                arr.push_back(kWindowsColorSet.activeLight);
-                arr.push_back(kWindowsColorSet.activeDark);
-                arr.push_back(kWindowsColorSet.inactiveLight);
-                arr.push_back(kWindowsColorSet.inactiveDark);
-                return;
-            }
-
-            case DrawBordersHook: {
-                auto args = static_cast<void **>(data);
-                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());
-
-                QPen pen;
-                const auto borderThickness = int(QHighDpi::fromNativePixels(
-                    getWindowFrameBorderThickness(hwnd), m_windowHandle));
-                pen.setWidth(borderThickness * 2);
-                const bool active = m_delegate->isWindowActive(m_host);
-                const bool dark = isDarkThemeActive() && isDarkWindowFrameEnabled(hwnd);
-
-                if (active) {
-                    if (isWindowFrameBorderColorized()) {
-                        pen.setColor(getAccentColor());
-                    } else {
-                        static QColor frameBorderActiveColorLight(kWindowsColorSet.activeLight);
-                        static QColor frameBorderActiveColorDark(kWindowsColorSet.activeDark);
-                        pen.setColor(dark ? frameBorderActiveColorDark
-                                          : frameBorderActiveColorLight);
-                    }
-                } else {
-                    static QColor frameBorderInactiveColorLight(kWindowsColorSet.inactiveLight);
-                    static QColor frameBorderInactiveColorDark(kWindowsColorSet.inactiveDark);
-                    pen.setColor(dark ? frameBorderInactiveColorDark
-                                      : frameBorderInactiveColorLight);
-                }
-                painter.save();
-
-                // ### TODO: do we need to enable or disable it?
-                painter.setRenderHint(QPainter::Antialiasing);
-
-                painter.setPen(pen);
-                painter.drawLine(QLine{
-                    QPoint{0,            0},
-                    QPoint{rect.width(), 0}
-                });
-                painter.restore();
+            case DefaultColorsHook: {
+                auto map = *reinterpret_cast<QMap<QString, QColor> *>(data);
+                map.clear();
+                map.insert("activeLight", kWindowsColorSet.activeLight);
+                map.insert("activeDark", kWindowsColorSet.activeDark);
+                map.insert("inactiveLight", kWindowsColorSet.inactiveLight);
+                map.insert("inactiveDark", kWindowsColorSet.inactiveDark);
                 return;
             }
 
@@ -886,6 +820,16 @@
             }
         }
         AbstractWindowContext::virtual_hook(id, data);
+    }
+
+    bool Win32WindowContext::needWin10BorderHandler() const {
+        return isWin10OrGreater() && !isWin11OrGreater();
+    }
+
+    void Win32WindowContext::setWin10BorderHandler(Win10BorderHandler *handler) {
+        win10BorderHandler.reset(handler);
+        handler->setBorderThickness(
+            int(getWindowFrameBorderThickness(reinterpret_cast<HWND>(windowId))));
     }
 
     bool Win32WindowContext::setupHost() {
@@ -948,6 +892,7 @@
             return true;
         }
 
+        // Whether to show system menu
         if (systemMenuHandler(hWnd, message, wParam, lParam, result)) {
             return true;
         }
@@ -955,7 +900,7 @@
         return false; // Not handled
     }
 
-    static constexpr const struct {
+    QWK_USED static constexpr const struct {
         const WPARAM wParam = 0xF1C9ADD4;
         const LPARAM lParam = 0xAFB6F4C6;
     } kMessageTag;
@@ -1099,7 +1044,7 @@
                                                LPARAM lParam, LRESULT *result) {
         switch (message) {
             case WM_MOUSELEAVE: {
-                if (wParam == kMessageTag.wParam) {
+                if (wParam != kMessageTag.wParam) {
                     // Qt will call TrackMouseEvent() to get the WM_MOUSELEAVE message when it
                     // receives WM_MOUSEMOVE messages, and since we are converting every
                     // WM_NCMOUSEMOVE message to WM_MOUSEMOVE message and send it back to the window
@@ -1362,7 +1307,7 @@
                     // this is also the normal behavior of a native Win32 window (but only when the
                     // window is not maximized/fullscreen/minimized, of course).
                     if (isWindowNoState(hWnd)) {
-                        static constexpr const auto kBorderSize = quint8{2};
+                        static constexpr const quint8 kBorderSize = 2;
                         bool isTop = (nativeLocalPos.y <= kBorderSize);
                         bool isLeft = nativeLocalPos.x <= kBorderSize;
                         bool isRight = (nativeLocalPos.x >= (clientWidth - kBorderSize));
@@ -1938,4 +1883,40 @@
         return false;
     }
 
+    void Win10BorderHandler::paintBorder(QPainter &painter, const QRect &rect,
+                                         const QRegion &region) {
+        Q_UNUSED(rect)
+        Q_UNUSED(region)
+
+        QPen pen;
+        pen.setWidth(m_borderThickness * 2);
+
+        const bool dark = isDarkThemeActive() &&
+                          isDarkWindowFrameEnabled(reinterpret_cast<HWND>(m_window->winId()));
+        if (isActive()) {
+            if (isWindowFrameBorderColorized()) {
+                pen.setColor(getAccentColor());
+            } else {
+                static QColor frameBorderActiveColorLight(kWindowsColorSet.activeLight);
+                static QColor frameBorderActiveColorDark(kWindowsColorSet.activeDark);
+                pen.setColor(dark ? frameBorderActiveColorDark : frameBorderActiveColorLight);
+            }
+        } else {
+            static QColor frameBorderInactiveColorLight(kWindowsColorSet.inactiveLight);
+            static QColor frameBorderInactiveColorDark(kWindowsColorSet.inactiveDark);
+            pen.setColor(dark ? frameBorderInactiveColorDark : frameBorderInactiveColorLight);
+        }
+        painter.save();
+
+        // ### TODO: do we need to enable or disable it?
+        painter.setRenderHint(QPainter::Antialiasing);
+
+        painter.setPen(pen);
+        painter.drawLine(QLine{
+            QPoint{0,                 0},
+            QPoint{m_window->width(), 0}
+        });
+        painter.restore();
+    }
+
 }

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