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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QGRAPHICSGRIDLAYOUTENGINE_P_H
#define QGRAPHICSGRIDLAYOUTENGINE_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtWidgets/private/qtwidgetsglobal_p.h>
#include <QtGui/private/qgridlayoutengine_p.h>
#include <QtWidgets/qsizepolicy.h>
#include <QtWidgets/qstyle.h>
#include <QtWidgets/qstyleoption.h>
#include "qgraphicslayoutitem.h"
QT_REQUIRE_CONFIG(graphicsview);
QT_BEGIN_NAMESPACE
class QGraphicsLayoutPrivate;
class QGraphicsGridLayoutEngineItem : public QGridLayoutItem {
public:
QGraphicsGridLayoutEngineItem(QGraphicsLayoutItem *item, int row, int columns, int rowSpan = 1, int columnSpan = 1,
Qt::Alignment alignment = { })
: QGridLayoutItem(row, columns, rowSpan, columnSpan, alignment), q_layoutItem(item) {}
virtual QLayoutPolicy::Policy sizePolicy(Qt::Orientation orientation) const override
{
QSizePolicy sizePolicy(q_layoutItem->sizePolicy());
return (QLayoutPolicy::Policy)((orientation == Qt::Horizontal) ? sizePolicy.horizontalPolicy()
: sizePolicy.verticalPolicy());
}
virtual QLayoutPolicy::ControlTypes controlTypes(LayoutSide) const override
{
const QSizePolicy::ControlType ct = q_layoutItem->sizePolicy().controlType();
return (QLayoutPolicy::ControlTypes)ct;
}
virtual QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint) const override
{
return q_layoutItem->effectiveSizeHint(which, constraint);
}
virtual void setGeometry(const QRectF &rect) override
{
q_layoutItem->setGeometry(rect);
}
virtual bool hasDynamicConstraint() const override;
virtual Qt::Orientation dynamicConstraintOrientation() const override;
virtual bool isEmpty() const override;
QGraphicsLayoutItem *layoutItem() const { return q_layoutItem; }
protected:
QGraphicsLayoutItem *q_layoutItem;
};
class QGraphicsGridLayoutEngine : public QGridLayoutEngine
{
public:
QGraphicsGridLayoutEngineItem *findLayoutItem(QGraphicsLayoutItem *layoutItem) const
{
const int index = indexOf(layoutItem);
if (index < 0)
return nullptr;
return static_cast<QGraphicsGridLayoutEngineItem*>(q_items.at(index));
}
int indexOf(QGraphicsLayoutItem *item) const
{
for (int i = 0; i < q_items.size(); ++i) {
if (item == static_cast<QGraphicsGridLayoutEngineItem*>(q_items.at(i))->layoutItem())
return i;
}
return -1;
}
void setAlignment(QGraphicsLayoutItem *graphicsLayoutItem, Qt::Alignment alignment);
Qt::Alignment alignment(QGraphicsLayoutItem *graphicsLayoutItem) const;
void setStretchFactor(QGraphicsLayoutItem *layoutItem, int stretch, Qt::Orientation orientation);
int stretchFactor(QGraphicsLayoutItem *layoutItem, Qt::Orientation orientation) const;
};
QT_END_NAMESPACE
#endif // QGRAPHICSGRIDLAYOUTENGINE_P_H
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