| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
| 3 | |
| 4 | #include "qgraphicsgridlayoutengine_p.h" |
| 5 | |
| 6 | #include "qgraphicslayoutitem_p.h" |
| 7 | #include "qgraphicslayout_p.h" |
| 8 | #include "qgraphicswidget.h" |
| 9 | |
| 10 | QT_BEGIN_NAMESPACE |
| 11 | |
| 12 | /* |
| 13 | returns \c true if the size policy returns \c true for either hasHeightForWidth() |
| 14 | or hasWidthForHeight() |
| 15 | */ |
| 16 | bool QGraphicsGridLayoutEngineItem::hasDynamicConstraint() const |
| 17 | { |
| 18 | return QGraphicsLayoutItemPrivate::get(q: q_layoutItem)->hasHeightForWidth() |
| 19 | || QGraphicsLayoutItemPrivate::get(q: q_layoutItem)->hasWidthForHeight(); |
| 20 | } |
| 21 | |
| 22 | Qt::Orientation QGraphicsGridLayoutEngineItem::dynamicConstraintOrientation() const |
| 23 | { |
| 24 | if (QGraphicsLayoutItemPrivate::get(q: q_layoutItem)->hasHeightForWidth()) |
| 25 | return Qt::Vertical; |
| 26 | else //if (QGraphicsLayoutItemPrivate::get(q_layoutItem)->hasWidthForHeight()) |
| 27 | return Qt::Horizontal; |
| 28 | } |
| 29 | |
| 30 | /*! |
| 31 | \internal |
| 32 | |
| 33 | If this returns true, the layout will arrange just as if the item was never added to the layout. |
| 34 | (Note that this shouldn't lead to a "double spacing" where the item was hidden) |
| 35 | */ |
| 36 | bool QGraphicsGridLayoutEngineItem::isEmpty() const |
| 37 | { |
| 38 | return q_layoutItem->isEmpty(); |
| 39 | } |
| 40 | |
| 41 | void QGraphicsGridLayoutEngine::setAlignment(QGraphicsLayoutItem *graphicsLayoutItem, Qt::Alignment alignment) |
| 42 | { |
| 43 | if (QGraphicsGridLayoutEngineItem *gridEngineItem = findLayoutItem(layoutItem: graphicsLayoutItem)) { |
| 44 | gridEngineItem->setAlignment(alignment); |
| 45 | invalidate(); |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | Qt::Alignment QGraphicsGridLayoutEngine::alignment(QGraphicsLayoutItem *graphicsLayoutItem) const |
| 50 | { |
| 51 | if (QGraphicsGridLayoutEngineItem *gridEngineItem = findLayoutItem(layoutItem: graphicsLayoutItem)) |
| 52 | return gridEngineItem->alignment(); |
| 53 | return { }; |
| 54 | } |
| 55 | |
| 56 | |
| 57 | void QGraphicsGridLayoutEngine::setStretchFactor(QGraphicsLayoutItem *layoutItem, int stretch, |
| 58 | Qt::Orientation orientation) |
| 59 | { |
| 60 | Q_ASSERT(stretch >= 0); |
| 61 | |
| 62 | if (QGraphicsGridLayoutEngineItem *item = findLayoutItem(layoutItem)) |
| 63 | item->setStretchFactor(stretch, orientation); |
| 64 | } |
| 65 | |
| 66 | int QGraphicsGridLayoutEngine::stretchFactor(QGraphicsLayoutItem *layoutItem, Qt::Orientation orientation) const |
| 67 | { |
| 68 | if (QGraphicsGridLayoutEngineItem *item = findLayoutItem(layoutItem)) |
| 69 | return item->stretchFactor(orientation); |
| 70 | return 0; |
| 71 | } |
| 72 | |
| 73 | QT_END_NAMESPACE |
| 74 |