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39
40#include "qgraphicsgridlayoutengine_p.h"
41
42#include "qgraphicslayoutitem_p.h"
43#include "qgraphicslayout_p.h"
44#include "qgraphicswidget.h"
45#include <private/qgraphicswidget_p.h>
46
47QT_BEGIN_NAMESPACE
48
49bool QGraphicsGridLayoutEngineItem::isHidden() const
50{
51 if (QGraphicsItem *item = q_layoutItem->graphicsItem())
52 return QGraphicsItemPrivate::get(item)->explicitlyHidden;
53 return false;
54}
55
56/*!
57 \internal
58
59 If this returns true, the layout will arrange just as if the item was never added to the layout.
60 (Note that this shouldn't lead to a "double spacing" where the item was hidden)
61 ### Qt6: Move to QGraphicsLayoutItem and make virtual
62*/
63bool QGraphicsGridLayoutEngineItem::isIgnored() const
64{
65 return isHidden() && !q_layoutItem->sizePolicy().retainSizeWhenHidden();
66}
67
68/*
69 returns \c true if the size policy returns \c true for either hasHeightForWidth()
70 or hasWidthForHeight()
71 */
72bool QGraphicsGridLayoutEngineItem::hasDynamicConstraint() const
73{
74 return QGraphicsLayoutItemPrivate::get(q: q_layoutItem)->hasHeightForWidth()
75 || QGraphicsLayoutItemPrivate::get(q: q_layoutItem)->hasWidthForHeight();
76}
77
78Qt::Orientation QGraphicsGridLayoutEngineItem::dynamicConstraintOrientation() const
79{
80 if (QGraphicsLayoutItemPrivate::get(q: q_layoutItem)->hasHeightForWidth())
81 return Qt::Vertical;
82 else //if (QGraphicsLayoutItemPrivate::get(q_layoutItem)->hasWidthForHeight())
83 return Qt::Horizontal;
84}
85
86
87void QGraphicsGridLayoutEngine::setAlignment(QGraphicsLayoutItem *graphicsLayoutItem, Qt::Alignment alignment)
88{
89 if (QGraphicsGridLayoutEngineItem *gridEngineItem = findLayoutItem(layoutItem: graphicsLayoutItem)) {
90 gridEngineItem->setAlignment(alignment);
91 invalidate();
92 }
93}
94
95Qt::Alignment QGraphicsGridLayoutEngine::alignment(QGraphicsLayoutItem *graphicsLayoutItem) const
96{
97 if (QGraphicsGridLayoutEngineItem *gridEngineItem = findLayoutItem(layoutItem: graphicsLayoutItem))
98 return gridEngineItem->alignment();
99 return { };
100}
101
102
103void QGraphicsGridLayoutEngine::setStretchFactor(QGraphicsLayoutItem *layoutItem, int stretch,
104 Qt::Orientation orientation)
105{
106 Q_ASSERT(stretch >= 0);
107
108 if (QGraphicsGridLayoutEngineItem *item = findLayoutItem(layoutItem))
109 item->setStretchFactor(stretch, orientation);
110}
111
112int QGraphicsGridLayoutEngine::stretchFactor(QGraphicsLayoutItem *layoutItem, Qt::Orientation orientation) const
113{
114 if (QGraphicsGridLayoutEngineItem *item = findLayoutItem(layoutItem))
115 return item->stretchFactor(orientation);
116 return 0;
117}
118
119QT_END_NAMESPACE
120

source code of qtbase/src/widgets/graphicsview/qgraphicsgridlayoutengine.cpp