qplatformscreen_qpa.cpp

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#include "qplatformscreen_qpa.h"
#include <QtGui/qapplication.h>
#include <QtGui/private/qapplication_p.h>
#include <QtGui/qdesktopwidget.h>
#include <QtGui/qplatformintegration_qpa.h>
#include <QtGui/qwidget.h>
#include <QtGui/private/qwidget_p.h>

QWidget *QPlatformScreen::topLevelAt(const QPoint & pos) const
{
    QWidgetList list = QApplication::topLevelWidgets();
    for (int i = list.size()-1; i >= 0; --i) {
        QWidget *w = list[i];
        //### mask is ignored
        if (w != QApplication::desktop() && w->isVisible() && w->geometry().contains(pos))
            return w;
    }

    return 0;
}

QSize QPlatformScreen::physicalSize() const
{
    static const int dpi = 100;
    int width = geometry().width() / dpi * qreal(25.4) ;
    int height = geometry().height() / dpi * qreal(25.4) ;
    return QSize(width,height);
}

Q_GUI_EXPORT extern QWidgetPrivate *qt_widget_private(QWidget *widget);
QPlatformScreen * QPlatformScreen::platformScreenForWidget(const QWidget *widget)
{
    QWidget *window = widget->window();
    QWidgetPrivate *windowPrivate = qt_widget_private(window);
    QTLWExtra * topData = windowPrivate->topData();
    QPlatformIntegration *integration =
            QApplicationPrivate::platformIntegration();
    return integration->screens()[topData->screenIndex];
}