From 327055934009dc416be6234db8e4d26fab81fb80 Mon Sep 17 00:00:00 2001
From: SineStriker <55847490+SineStriker@users.noreply.github.com>
Date: 周四, 21 12月 2023 23:21:28 +0800
Subject: [PATCH] Merge pull request #8 from stdware/stylesupport

---
 src/core/contexts/abstractwindowcontext.cpp |  101 ++++++++++++++++++++++++++++++++++++--------------
 1 files changed, 73 insertions(+), 28 deletions(-)

diff --git a/src/core/contexts/abstractwindowcontext.cpp b/src/core/contexts/abstractwindowcontext.cpp
index 96f2935..0d72e3c 100644
--- a/src/core/contexts/abstractwindowcontext.cpp
+++ b/src/core/contexts/abstractwindowcontext.cpp
@@ -2,36 +2,50 @@
 
 #include <QtGui/QPen>
 #include <QtGui/QPainter>
+#include <QtGui/QScreen>
+#include <memory>
 
 #include "qwkglobal_p.h"
 
 namespace QWK {
 
+    class WinIdChangeEventFilter : public QObject {
+    public:
+        explicit WinIdChangeEventFilter(QObject *widget, AbstractWindowContext *ctx,
+                                        QObject *parent = nullptr)
+            : QObject(parent), ctx(ctx) {
+            widget->installEventFilter(this);
+        }
+
+    protected:
+        bool eventFilter(QObject *obj, QEvent *event) override {
+            Q_UNUSED(obj)
+            if (event->type() == QEvent::WinIdChange) {
+                ctx->notifyWinIdChange();
+            }
+            return false;
+        }
+
+    protected:
+        AbstractWindowContext *ctx;
+    };
+
     AbstractWindowContext::AbstractWindowContext() = default;
 
     AbstractWindowContext::~AbstractWindowContext() = default;
 
-    bool AbstractWindowContext::setup(QObject *host, WindowItemDelegate *delegate) {
-        if (!host || !delegate) {
-            return false;
+    void AbstractWindowContext::setup(QObject *host, WindowItemDelegate *delegate) {
+        if (m_host || !host || !delegate) {
+            return;
         }
-
-        auto windowHandle = delegate->hostWindow(host);
-        if (!windowHandle) {
-            return false;
-        }
-
         m_host = host;
         m_delegate.reset(delegate);
-        m_windowHandle = windowHandle;
+        m_winIdChangeEventFilter = std::make_unique<WinIdChangeEventFilter>(host, this);
 
-        if (!setupHost()) {
-            m_host = nullptr;
-            m_delegate.reset();
-            m_windowHandle = nullptr;
-            return false;
+        m_windowHandle = m_delegate->hostWindow(m_host);
+        if (m_windowHandle) {
+            winIdChanged();
         }
-        return true;
     }
 
     bool AbstractWindowContext::setHitTestVisible(const QObject *obj, bool visible) {
@@ -50,9 +64,8 @@
 
     bool AbstractWindowContext::setSystemButton(WindowAgentBase::SystemButton button,
                                                 QObject *obj) {
-        Q_ASSERT(obj);
         Q_ASSERT(button != WindowAgentBase::Unknown);
-        if (!obj || (button == WindowAgentBase::Unknown)) {
+        if (button == WindowAgentBase::Unknown) {
             return false;
         }
 
@@ -65,16 +78,28 @@
 
     bool AbstractWindowContext::setTitleBar(QObject *item) {
         Q_ASSERT(item);
-        if (!item) {
-            return false;
-        }
-
         if (m_titleBar == item) {
             return false;
         }
+
+        if (m_titleBar) {
+            // Since the title bar is changed, all items inside it should be dereferenced right away
+            for (auto &button : m_systemButtons) {
+                button = nullptr;
+            }
+            m_hitTestVisibleItems.clear();
+        }
+
         m_titleBar = item;
         return true;
     }
+
+#ifdef Q_OS_MAC
+    void AbstractWindowContext::setSystemButtonArea(const QRect &rect) {
+        m_systemButtonArea = rect;
+        virtual_hook(SystemButtonAreaChangedHook, nullptr);
+    }
+#endif
 
     bool AbstractWindowContext::isInSystemButtons(const QPoint &pos,
                                                   WindowAgentBase::SystemButton *button) const {
@@ -148,13 +173,25 @@
     void AbstractWindowContext::virtual_hook(int id, void *data) {
         switch (id) {
             case CentralizeHook: {
-                // TODO: Qt
-                break;
+                if (!m_windowHandle)
+                    return;
+
+                QRect screenGeometry = m_windowHandle->screen()->geometry();
+                int x = (screenGeometry.width() - m_windowHandle->width()) / 2;
+                int y = (screenGeometry.height() - m_windowHandle->height()) / 2;
+                QPoint pos(x, y);
+                pos += screenGeometry.topLeft();
+                m_windowHandle->setPosition(pos);
+                return;
             }
 
-            case ShowSystemMenuHook: {
-                // TODO: Qt
-                break;
+            case RaiseWindowHook: {
+                Qt::WindowStates state = m_delegate->getWindowState(m_host);
+                if (state & Qt::WindowMinimized) {
+                    m_delegate->setWindowState(m_host, state & ~Qt::WindowMinimized);
+                }
+                m_delegate->bringWindowToTop(m_host);
+                return;
             }
 
             case DefaultColorsHook: {
@@ -176,4 +213,12 @@
         virtual_hook(ShowSystemMenuHook, &const_cast<QPoint &>(pos));
     }
 
-}
\ No newline at end of file
+    void AbstractWindowContext::notifyWinIdChange() {
+        auto oldWindow = m_windowHandle;
+        m_windowHandle = m_delegate->hostWindow(m_host);
+        if (oldWindow == m_windowHandle)
+            return;
+        winIdChanged();
+    }
+
+}

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