MDIArea.cpp

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/*
  This file is part of KDDockWidgets.
 
  SPDX-FileCopyrightText: 2020-2022 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
  Author: Sérgio Martins <sergio.martins@kdab.com>
 
  SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only
 
  Contact KDAB at <info@kdab.com> for commercial licensing options.
*/
 
#include "MDIArea.h"
#include "DockWidgetBase.h"
#include "private/MDILayoutWidget_p.h"
#include "private/DropAreaWithCentralFrame_p.h"
 
#ifdef KDDOCKWIDGETS_QTWIDGETS
#include "DockWidget.h"
#include <QVBoxLayout>
#else
#include "DockWidgetQuick.h"
#endif
 
#include <QGuiApplication>
#include <QCloseEvent>
 
using namespace KDDockWidgets;
 
class MDIArea::Private
{
public:
    Private(QWidgetOrQuick *parent)
        : layoutWidget(new MDILayoutWidget(parent))
    {
    }
 
    ~Private()
    {
        delete layoutWidget;
    }
 
    MDILayoutWidget *const layoutWidget;
};
 
MDIArea::MDIArea(QWidgetOrQuick *parent)
    : QWidgetAdapter(parent)
    , d(new Private(this))
{
#ifdef KDDOCKWIDGETS_QTWIDGETS
    auto vlay = new QVBoxLayout(this);
    vlay->setContentsMargins({});
    vlay->addWidget(d->layoutWidget);
#else
    QWidgetAdapter::makeItemFillParent(d->layoutWidget);
#endif
}
 
MDIArea::~MDIArea()
{
    delete d;
}
 
void MDIArea::addDockWidget(DockWidgetBase *dw, QPoint localPt, InitialOption addingOption)
{
    if (dw->options() & DockWidgetBase::Option_MDINestable) {
        // We' wrap it with a drop area, so we can drag other dock widgets over this one and dock
        auto wrapperDW = new DockWidgetType(QStringLiteral("%1-mdiWrapper").arg(dw->uniqueName()));
        auto dropAreaWrapper = new DropArea(wrapperDW, /*isMDIWrapper= */ true);
        dropAreaWrapper->addDockWidget(dw, Location_OnBottom, nullptr);
        wrapperDW->setWidget(dropAreaWrapper);
 
        dw = wrapperDW;
    }
 
    d->layoutWidget->addDockWidget(dw, localPt, addingOption);
}
 
void MDIArea::moveDockWidget(DockWidgetBase *dw, QPoint pos)
{
    d->layoutWidget->moveDockWidget(dw, pos);
}
 
void MDIArea::resizeDockWidget(DockWidgetBase *dw, QSize size)
{
    d->layoutWidget->resizeDockWidget(dw, size);
}
 
QList<Frame *> MDIArea::frames() const
{
    return d->layoutWidget->frames();
}
 
void MDIArea::onCloseEvent(QCloseEvent *e)
{
    e->accept(); // Accepted by default (will close unless ignored)
 
    const Frame::List frames = this->frames();
    for (Frame *frame : frames) {
        qApp->sendEvent(frame, e);
        if (!e->isAccepted())
            break; // Stop when the first frame prevents closing
    }
}