120 lines
4.4 KiB
C++
120 lines
4.4 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the QtWidgets module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL3 included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or (at your option) the GNU General
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** Public license version 3 or any later version approved by the KDE Free
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** Qt Foundation. The licenses are as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-2.0.html and
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** https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qgraphicsgridlayoutengine_p.h"
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#include "qgraphicslayoutitem_p.h"
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#include "qgraphicslayout_p.h"
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#include "qgraphicswidget.h"
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#include <private/qgraphicswidget_p.h>
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QT_BEGIN_NAMESPACE
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bool QGraphicsGridLayoutEngineItem::isHidden() const
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{
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if (QGraphicsItem *item = q_layoutItem->graphicsItem())
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return QGraphicsItemPrivate::get(item)->explicitlyHidden;
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return false;
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}
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/*!
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\internal
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If this returns true, the layout will arrange just as if the item was never added to the layout.
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(Note that this shouldn't lead to a "double spacing" where the item was hidden)
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### Qt6: Move to QGraphicsLayoutItem and make virtual
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*/
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bool QGraphicsGridLayoutEngineItem::isIgnored() const
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{
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return isHidden() && !q_layoutItem->sizePolicy().retainSizeWhenHidden();
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}
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/*
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returns \c true if the size policy returns \c true for either hasHeightForWidth()
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or hasWidthForHeight()
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*/
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bool QGraphicsGridLayoutEngineItem::hasDynamicConstraint() const
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{
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return QGraphicsLayoutItemPrivate::get(q_layoutItem)->hasHeightForWidth()
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|| QGraphicsLayoutItemPrivate::get(q_layoutItem)->hasWidthForHeight();
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}
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Qt::Orientation QGraphicsGridLayoutEngineItem::dynamicConstraintOrientation() const
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{
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if (QGraphicsLayoutItemPrivate::get(q_layoutItem)->hasHeightForWidth())
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return Qt::Vertical;
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else //if (QGraphicsLayoutItemPrivate::get(q_layoutItem)->hasWidthForHeight())
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return Qt::Horizontal;
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}
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void QGraphicsGridLayoutEngine::setAlignment(QGraphicsLayoutItem *graphicsLayoutItem, Qt::Alignment alignment)
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{
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if (QGraphicsGridLayoutEngineItem *gridEngineItem = findLayoutItem(graphicsLayoutItem)) {
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gridEngineItem->setAlignment(alignment);
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invalidate();
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}
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}
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Qt::Alignment QGraphicsGridLayoutEngine::alignment(QGraphicsLayoutItem *graphicsLayoutItem) const
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{
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if (QGraphicsGridLayoutEngineItem *gridEngineItem = findLayoutItem(graphicsLayoutItem))
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return gridEngineItem->alignment();
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return 0;
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}
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void QGraphicsGridLayoutEngine::setStretchFactor(QGraphicsLayoutItem *layoutItem, int stretch,
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Qt::Orientation orientation)
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{
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Q_ASSERT(stretch >= 0);
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if (QGraphicsGridLayoutEngineItem *item = findLayoutItem(layoutItem))
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item->setStretchFactor(stretch, orientation);
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}
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int QGraphicsGridLayoutEngine::stretchFactor(QGraphicsLayoutItem *layoutItem, Qt::Orientation orientation) const
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{
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if (QGraphicsGridLayoutEngineItem *item = findLayoutItem(layoutItem))
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return item->stretchFactor(orientation);
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return 0;
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}
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QT_END_NAMESPACE
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