Add win10 border handler

Sine Striker

2023-12-12 0586c98f90866e4bc9f0dfe73aefb0a07c56697e

 src/quick/quickwindowagent.cpp

@@ -1,36 +1,41 @@
#include "quickwindowagent.h"
#include "quickwindowagent_p.h"
#include "quickitemdelegate_p.h"

#include <QtQuick/QQuickWindow>
#include <QtQuick/QQuickPaintedItem>
#include <QtQuick/private/qquickitem_p.h>
#include <QtQuick/private/qquickanchors_p.h>

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

#include "quickitemdelegate_p.h"

namespace QWK {

    class BorderItem : public QQuickPaintedItem {
    class BorderItem : public QQuickPaintedItem, public Win10BorderHandler {
        Q_OBJECT

    public:
        explicit BorderItem(AbstractWindowContext *ctx, QQuickItem *parent = nullptr);
        explicit BorderItem(QQuickItem *parent = nullptr);
        ~BorderItem() override;

        void updateHeight();
        void updateGeometry() override;
        void requestUpdate() override;

        bool isActive() const override;

    public:
        void paint(QPainter *painter) override;

        void itemChange(ItemChange change, const ItemChangeData &data) override;

    private:
        AbstractWindowContext *context;
    };

    BorderItem::BorderItem(AbstractWindowContext *ctx, QQuickItem *parent) : QQuickPaintedItem(parent), context(ctx) {
        setAntialiasing(true); // ### FIXME: do we need to enable or disable this?
        setMipmap(true); // ### FIXME: do we need to enable or disable this?
        setFillColor({}); // Will improve the performance a little bit.
        setOpaquePainting(true); // Will also improve the performance, we don't draw semi-transparent borders of course.
    BorderItem::BorderItem(QQuickItem *parent)
        : Win10BorderHandler(parent->window()), QQuickPaintedItem(parent) {
        setAntialiasing(true);   // ### FIXME: do we need to enable or disable this?
        setMipmap(true);         // ### FIXME: do we need to enable or disable this?
        setFillColor({});        // Will improve the performance a little bit.
        setOpaquePainting(true); // Will also improve the performance, we don't draw
                                 // semi-transparent borders of course.

        auto parentPri = QQuickItemPrivate::get(parent);
        auto anchors = QQuickItemPrivate::get(this)->anchors();
@@ -43,40 +48,22 @@

    BorderItem::~BorderItem() = default;

    void BorderItem::updateHeight() {
        bool native = false;
        quint32 thickness = 0;
        void *args[] = { &native, &thickness };
        context->virtual_hook(AbstractWindowContext::QueryBorderThicknessHook, &args);
        setHeight(thickness);
    void BorderItem::updateGeometry() {
        setHeight(m_borderThickness);
    }

    void BorderItem::requestUpdate() {
        update();
    }

    bool BorderItem::isActive() const {
        return static_cast<QQuickWindow *>(m_window)->isActive();
    }

    void BorderItem::paint(QPainter *painter) {
        auto rect = QRect{ QPoint{ 0, 0}, size().toSize() };
        auto region = QRegion{ rect };
        void *args[] = {
            painter,
            &rect,
            &region
        };
        context->virtual_hook(AbstractWindowContext::DrawBordersHook, args);
    }

    void BorderItem::itemChange(ItemChange change, const ItemChangeData &data) {
        QQuickPaintedItem::itemChange(change, data);
        switch (change) {
            case ItemSceneChange:
                if (data.window) {
                    connect(data.window, &QQuickWindow::activeChanged, this, [this](){ update(); });
                }
                Q_FALLTHROUGH();
            case ItemVisibleHasChanged:
            case ItemDevicePixelRatioHasChanged:
                updateHeight();
                break;
            default:
                break;
        }
        QRect rect(QPoint(0, 0), size().toSize());
        QRegion region(rect);
        Win10BorderHandler::paintBorder(*painter, rect, region);
    }

    QuickWindowAgentPrivate::QuickWindowAgentPrivate() {
@@ -111,11 +98,17 @@
        }
        d->hostWindow = window;

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