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Diffstat (limited to 'src/widgets/graphicsview/qgraphicsgridlayoutengine_p.h')
-rw-r--r-- | src/widgets/graphicsview/qgraphicsgridlayoutengine_p.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/src/widgets/graphicsview/qgraphicsgridlayoutengine_p.h b/src/widgets/graphicsview/qgraphicsgridlayoutengine_p.h new file mode 100644 index 0000000000..1e987e30d2 --- /dev/null +++ b/src/widgets/graphicsview/qgraphicsgridlayoutengine_p.h @@ -0,0 +1,125 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the QtWidgets module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QGRAPHICSGRIDLAYOUTENGINE_P_H +#define QGRAPHICSGRIDLAYOUTENGINE_P_H + +#include <QtGui/private/qgridlayoutengine_p.h> + +#include <QtWidgets/qsizepolicy.h> +#include <QtWidgets/qstyle.h> +#include <QtWidgets/qstyleoption.h> +#include "qgraphicslayoutitem.h" + +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 = 0) + : QGridLayoutItem(row, columns, rowSpan, columnSpan, alignment), q_layoutItem(item) {} + + virtual QLayoutPolicy::Policy sizePolicy(Qt::Orientation orientation) const Q_DECL_OVERRIDE + { + QSizePolicy sizePolicy(q_layoutItem->sizePolicy()); + return (QLayoutPolicy::Policy)((orientation == Qt::Horizontal) ? sizePolicy.horizontalPolicy() + : sizePolicy.verticalPolicy()); + } + + virtual QLayoutPolicy::ControlTypes controlTypes(LayoutSide) const Q_DECL_OVERRIDE + { + const QSizePolicy::ControlType ct = q_layoutItem->sizePolicy().controlType(); + return (QLayoutPolicy::ControlTypes)ct; + } + + virtual QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint) const Q_DECL_OVERRIDE + { + return q_layoutItem->effectiveSizeHint(which, constraint); + } + + virtual void setGeometry(const QRectF &rect) Q_DECL_OVERRIDE + { + q_layoutItem->setGeometry(rect); + } + + virtual bool hasDynamicConstraint() const Q_DECL_OVERRIDE; + virtual Qt::Orientation dynamicConstraintOrientation() const Q_DECL_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 0; + return static_cast<QGraphicsGridLayoutEngineItem*>(q_items.at(index)); + } + + int indexOf(QGraphicsLayoutItem *item) const + { + for (int i = 0; i < q_items.count(); ++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 |