Add win10 border handler

Sine Striker

2023-12-12 0586c98f90866e4bc9f0dfe73aefb0a07c56697e

 src/widgets/widgetwindowagent.cpp

@@ -3,31 +3,49 @@

#include <QtGui/QtEvents>
#include <QtGui/QPainter>
#include <QtCore/QDebug>

#ifdef Q_OS_WINDOWS
#  include <QWKCore/private/win10borderhandler_p.h>
#endif

#include "widgetitemdelegate_p.h"

namespace QWK {

    class WidgetPaintFilter : public QObject {
#ifdef Q_OS_WINDOWS
    class WidgetBorderHandler : public QObject, public Win10BorderHandler {
    public:
        WidgetPaintFilter(QWidget *widget, AbstractWindowContext *ctx) : widget(widget), ctx(ctx) {
        explicit WidgetBorderHandler(QWidget *widget)
            : Win10BorderHandler(widget->windowHandle()), widget(widget) {
            widget->installEventFilter(this);
        }

        void updateGeometry() override {
            if (widget->windowState() & (Qt::WindowMaximized | Qt::WindowFullScreen)) {
                widget->setContentsMargins({});
            } else {
                widget->setContentsMargins({0, int(m_borderThickness), 0, 0});
            }
        }

        void requestUpdate() override {
            widget->update();
        }

        bool isActive() const override {
            return widget->isActiveWindow();
        }

    protected:
        bool eventFilter(QObject *obj, QEvent *event) override {
            switch (event->type()) {
                case QEvent::Paint: {
                    auto e = static_cast<QPaintEvent *>(event);
                    if (widget->windowState() & (Qt::WindowMaximized | Qt::WindowFullScreen))
                        break;
                    auto paintEvent = static_cast<QPaintEvent *>(event);
                    QPainter painter(widget);
                    QRect rect = e->rect();
                    QRegion region = e->region();
                    void *a[3] = {
                        &painter,
                        &rect,
                        &region,
                    };
                    ctx->virtual_hook(AbstractWindowContext::DrawBordersHook, a);
                    paintBorder(painter, paintEvent->rect(), paintEvent->region());
                    return true;
                }
                default:
@@ -37,8 +55,8 @@
        }

        QWidget *widget;
        AbstractWindowContext *ctx;
    };
#endif

    WidgetWindowAgentPrivate::WidgetWindowAgentPrivate() {
    }
@@ -75,12 +93,17 @@
        }
        d->hostWidget = w;

#ifdef Q_OS_WINDOWS
        // Install painting hook
        if (bool needPaintBorder = false;
            d->context->virtual_hook(AbstractWindowContext::NeedsDrawBordersHook, &needPaintBorder),
        if (bool needPaintBorder;
            QMetaObject::invokeMethod(d->context.get(), "needWin10BorderHandler",
                                      Qt::DirectConnection, Q_RETURN_ARG(bool, needPaintBorder)),
            needPaintBorder) {
            d->paintFilter = std::make_unique<WidgetPaintFilter>(w, d->context.get());
            QMetaObject::invokeMethod(d->context.get(), "setWin10BorderHandler",
                                      Qt::DirectConnection,
                                      Q_ARG(Win10BorderHandler *, new WidgetBorderHandler(w)));
        }
#endif
        return true;
    }