windowagentwidget_mac.cpp

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#include "windowagentwidget_p.h"
#include <QtGui/QtEvents>
 
QX_WINDOW_BEGIN_NAMESPACE
 
static inline QRect getWidgetSceneRect(QWidget *widget)
{
    return {widget->mapTo(widget->window(), QPoint()), widget->size()};
}
 
class SystemButtonAreaWidgetEventFilter : public QObject
{
public:
    SystemButtonAreaWidgetEventFilter(QWidget *widget, WindowContext *ctx, QObject *parent = nullptr)
        : QObject(parent)
        , widget(widget)
        , ctx(ctx)
    {
        widget->installEventFilter(this);
        ctx->setSystemButtonAreaCallback([widget](const QSize &) {
            return getWidgetSceneRect(widget);   //
        });
    }
    ~SystemButtonAreaWidgetEventFilter() override = default;
protected:
    bool eventFilter(QObject *obj, QEvent *event) override
    {
        Q_UNUSED(obj)
        switch (event->type()) {
        case QEvent::Move:
        case QEvent::Resize: {
            ctx->virtual_hook(WindowContext::SystemButtonAreaChangedHook, nullptr);
            break;
        }
 
        default:
            break;
        }
        return false;
    }
protected:
    QWidget *widget;
    WindowContext *ctx;
};
 
QWidget *WindowAgentWidget::systemButtonArea() const
{
    Q_D(const WindowAgentWidget);
    return d->m_systemButtonAreaWidget;
}
 
void WindowAgentWidget::setSystemButtonArea(QWidget *widget)
{
    Q_D(WindowAgentWidget);
    if (d->m_systemButtonAreaWidget == widget)
        return;
 
    auto ctx = d->m_context.get();
    d->m_systemButtonAreaWidget = widget;
    if (!widget) {
        d->m_context->setSystemButtonAreaCallback({});
        d->m_systemButtonAreaWidgetEventFilter.reset();
        return;
    }
    d->m_systemButtonAreaWidgetEventFilter = std::make_unique<SystemButtonAreaWidgetEventFilter>(widget, ctx);
}
 
ScreenRectCallback WindowAgentWidget::systemButtonAreaCallback() const
{
    Q_D(const WindowAgentWidget);
    return d->m_systemButtonAreaWidget ? nullptr : d->m_context->systemButtonAreaCallback();
}
 
void WindowAgentWidget::setSystemButtonAreaCallback(const ScreenRectCallback &callback)
{
    Q_D(WindowAgentWidget);
    setSystemButtonArea(nullptr);
    d->m_context->setSystemButtonAreaCallback(callback);
}
 
QX_WINDOW_END_NAMESPACE