From fee0c64a8f8d6237f94457b608cc09614514f9b5 Mon Sep 17 00:00:00 2001
From: Sine Striker <trueful@163.com>
Date: 周六, 23 12月 2023 15:00:35 +0800
Subject: [PATCH] Fix window overflow

---
 src/core/contexts/abstractwindowcontext.cpp |  228 ++++++++++++++++++++++++++++++++++++++++++++------------
 1 files changed, 178 insertions(+), 50 deletions(-)

diff --git a/src/core/contexts/abstractwindowcontext.cpp b/src/core/contexts/abstractwindowcontext.cpp
index 5150203..de9674c 100644
--- a/src/core/contexts/abstractwindowcontext.cpp
+++ b/src/core/contexts/abstractwindowcontext.cpp
@@ -1,14 +1,81 @@
 #include "abstractwindowcontext_p.h"
 
+#include <QtGui/QPen>
+#include <QtGui/QPainter>
+#include <QtGui/QScreen>
+#include <memory>
+
+#include "qwkglobal_p.h"
+
 namespace QWK {
 
-    AbstractWindowContext::AbstractWindowContext(QObject *host, WindowItemDelegate *delegate)
-        : m_host(host), m_delegate(delegate), m_windowHandle(delegate->hostWindow(host)) {
-    }
+    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::setHitTestVisible(QObject *obj, bool visible) {
+    void AbstractWindowContext::setup(QObject *host, WindowItemDelegate *delegate) {
+        if (m_host || !host || !delegate) {
+            return;
+        }
+        m_host = host;
+        m_delegate.reset(delegate);
+        m_winIdChangeEventFilter = std::make_unique<WinIdChangeEventFilter>(host, this);
+
+        m_windowHandle = m_delegate->hostWindow(m_host);
+        if (m_windowHandle) {
+            winIdChanged();
+        }
+    }
+
+    bool AbstractWindowContext::setWindowAttribute(const QString &key, const QVariant &attribute) {
+        auto it = m_windowAttributes.find(key);
+        if (it == m_windowAttributes.end()) {
+            if (!attribute.isValid()) {
+                return true;
+            }
+            if (!m_windowHandle || !windowAttributeChanged(key, attribute, {})) {
+                return false;
+            }
+            m_windowAttributes.insert(key, attribute);
+            return true;
+        }
+
+        if (it.value() == attribute)
+            return true;
+        if (!m_windowHandle || !windowAttributeChanged(key, attribute, it.value())) {
+            return false;
+        }
+
+        if (attribute.isValid()) {
+            it.value() = attribute;
+        } else {
+            m_windowAttributes.erase(it);
+        }
+        return true;
+    }
+
+    bool AbstractWindowContext::setHitTestVisible(const QObject *obj, bool visible) {
         Q_ASSERT(obj);
         if (!obj) {
             return false;
@@ -22,26 +89,10 @@
         return true;
     }
 
-    bool AbstractWindowContext::setHitTestVisible(const QRect &rect, bool visible) {
-        Q_ASSERT(rect.isValid());
-        if (!rect.isValid()) {
-            return false;
-        }
-
-        if (visible) {
-            m_hitTestVisibleRects.append(rect);
-        } else {
-            m_hitTestVisibleRects.removeAll(rect);
-        }
-        hitTestVisibleShapeDirty = true;
-        return true;
-    }
-
-    bool AbstractWindowContext::setSystemButton(CoreWindowAgent::SystemButton button,
+    bool AbstractWindowContext::setSystemButton(WindowAgentBase::SystemButton button,
                                                 QObject *obj) {
-        Q_ASSERT(obj);
-        Q_ASSERT(button != CoreWindowAgent::Unknown);
-        if (!obj || (button == CoreWindowAgent::Unknown)) {
+        Q_ASSERT(button != WindowAgentBase::Unknown);
+        if (button == WindowAgentBase::Unknown) {
             return false;
         }
 
@@ -54,43 +105,40 @@
 
     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;
     }
 
-    void AbstractWindowContext::showSystemMenu(const QPoint &pos) {
-        // ?
+#ifdef Q_OS_MAC
+    void AbstractWindowContext::setSystemButtonArea(const QRect &rect) {
+        m_systemButtonArea = rect;
+        virtual_hook(SystemButtonAreaChangedHook, nullptr);
     }
-
-    QRegion AbstractWindowContext::hitTestShape() const {
-        if (hitTestVisibleShapeDirty) {
-            hitTestVisibleShape = {};
-            for (const auto &rect : m_hitTestVisibleRects) {
-                hitTestVisibleShape += rect;
-            }
-            hitTestVisibleShapeDirty = false;
-        }
-        return hitTestVisibleShape;
-    }
+#endif
 
     bool AbstractWindowContext::isInSystemButtons(const QPoint &pos,
-                                                  CoreWindowAgent::SystemButton *button) const {
-        *button = CoreWindowAgent::Unknown;
-        for (int i = CoreWindowAgent::WindowIcon; i <= CoreWindowAgent::Close; ++i) {
+                                                  WindowAgentBase::SystemButton *button) const {
+        *button = WindowAgentBase::Unknown;
+        for (int i = WindowAgentBase::WindowIcon; i <= WindowAgentBase::Close; ++i) {
             auto currentButton = m_systemButtons[i];
             if (!currentButton || !m_delegate->isVisible(currentButton) ||
                 !m_delegate->isEnabled(currentButton)) {
                 continue;
             }
             if (m_delegate->mapGeometryToScene(currentButton).contains(pos)) {
-                *button = CoreWindowAgent::WindowIcon;
+                *button = static_cast<WindowAgentBase::SystemButton>(i);
                 return true;
             }
         }
@@ -115,7 +163,11 @@
             return false;
         }
 
-        for (int i = CoreWindowAgent::WindowIcon; i <= CoreWindowAgent::Close; ++i) {
+        if (!titleBarRect.contains(pos)) {
+            return false;
+        }
+
+        for (int i = WindowAgentBase::WindowIcon; i <= WindowAgentBase::Close; ++i) {
             auto currentButton = m_systemButtons[i];
             if (currentButton && m_delegate->isVisible(currentButton) &&
                 m_delegate->isEnabled(currentButton) &&
@@ -131,11 +183,87 @@
             }
         }
 
-        if (!m_hitTestVisibleRects.isEmpty() && hitTestShape().contains(pos)) {
-            return false;
-        }
-
         return true;
     }
 
-}
\ No newline at end of file
+    QString AbstractWindowContext::key() const {
+        return {};
+    }
+
+    QWK_USED static constexpr const struct {
+        const quint32 activeLight = MAKE_RGBA_COLOR(210, 233, 189, 226);
+        const quint32 activeDark = MAKE_RGBA_COLOR(177, 205, 190, 240);
+        const quint32 inactiveLight = MAKE_RGBA_COLOR(193, 195, 211, 203);
+        const quint32 inactiveDark = MAKE_RGBA_COLOR(240, 240, 250, 255);
+    } kSampleColorSet;
+
+    void AbstractWindowContext::virtual_hook(int id, void *data) {
+        switch (id) {
+            case CentralizeHook: {
+                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 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: {
+                auto &map = *static_cast<QMap<QString, QColor> *>(data);
+                map.clear();
+                map.insert(QStringLiteral("activeLight"), kSampleColorSet.activeLight);
+                map.insert(QStringLiteral("activeDark"), kSampleColorSet.activeDark);
+                map.insert(QStringLiteral("inactiveLight"), kSampleColorSet.inactiveLight);
+                map.insert(QStringLiteral("inactiveDark"), kSampleColorSet.inactiveDark);
+                return;
+            }
+
+            default:
+                break;
+        }
+    }
+
+    void AbstractWindowContext::showSystemMenu(const QPoint &pos) {
+        virtual_hook(ShowSystemMenuHook, &const_cast<QPoint &>(pos));
+    }
+
+    void AbstractWindowContext::notifyWinIdChange() {
+        auto oldWindow = m_windowHandle;
+        m_windowHandle = m_delegate->hostWindow(m_host);
+        if (oldWindow == m_windowHandle)
+            return;
+        winIdChanged();
+
+        if (m_windowHandle) {
+            // Refresh window attributes
+            auto attributes = m_windowAttributes;
+            m_windowAttributes.clear();
+            for (auto it = attributes.begin(); it != attributes.end(); ++it) {
+                if (!windowAttributeChanged(it.key(), it.value(), {})) {
+                    continue;
+                }
+                m_windowAttributes.insert(it.key(), it.value());
+            }
+        }
+    }
+
+    bool AbstractWindowContext::windowAttributeChanged(const QString &key,
+                                                       const QVariant &attribute,
+                                                       const QVariant &oldAttribute) {
+        return false;
+    }
+
+}

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