diff options
| -rw-r--r-- | src/gui/graphicsview/qgraphicsanchorlayout_p.cpp | 145 | ||||
| -rw-r--r-- | tests/auto/qgraphicsanchorlayout/tst_qgraphicsanchorlayout.cpp | 2 |
2 files changed, 84 insertions, 63 deletions
diff --git a/src/gui/graphicsview/qgraphicsanchorlayout_p.cpp b/src/gui/graphicsview/qgraphicsanchorlayout_p.cpp index 20ff03b..8139b2b 100644 --- a/src/gui/graphicsview/qgraphicsanchorlayout_p.cpp +++ b/src/gui/graphicsview/qgraphicsanchorlayout_p.cpp @@ -92,90 +92,111 @@ qreal QGraphicsAnchorPrivate::spacing() const } +static void sizeHintsFromItem(QGraphicsLayoutItem *item, + const QGraphicsAnchorLayoutPrivate::Orientation orient, + qreal *minSize, qreal *prefSize, + qreal *expSize, qreal *maxSize) +{ + QSizePolicy::Policy policy; + qreal minSizeHint; + qreal prefSizeHint; + qreal maxSizeHint; + + if (orient == QGraphicsAnchorLayoutPrivate::Horizontal) { + policy = item->sizePolicy().horizontalPolicy(); + minSizeHint = item->effectiveSizeHint(Qt::MinimumSize).width(); + prefSizeHint = item->effectiveSizeHint(Qt::PreferredSize).width(); + maxSizeHint = item->effectiveSizeHint(Qt::MaximumSize).width(); + } else { + policy = item->sizePolicy().verticalPolicy(); + minSizeHint = item->effectiveSizeHint(Qt::MinimumSize).height(); + prefSizeHint = item->effectiveSizeHint(Qt::PreferredSize).height(); + maxSizeHint = item->effectiveSizeHint(Qt::MaximumSize).height(); + } + + // minSize, prefSize and maxSize are initialized + // with item's preferred Size: this is QSizePolicy::Fixed. + // + // Then we check each flag to find the resultant QSizePolicy, + // according to the following table: + // + // constant value + // QSizePolicy::Fixed 0 + // QSizePolicy::Minimum GrowFlag + // QSizePolicy::Maximum ShrinkFlag + // QSizePolicy::Preferred GrowFlag | ShrinkFlag + // QSizePolicy::Ignored GrowFlag | ShrinkFlag | IgnoreFlag + + if (policy & QSizePolicy::ShrinkFlag) + *minSize = minSizeHint; + else + *minSize = prefSizeHint; + + if (policy & QSizePolicy::GrowFlag) + *maxSize = maxSizeHint; + else + *maxSize = prefSizeHint; + + // Note that these two initializations are affected by the previous flags + if (policy & QSizePolicy::IgnoreFlag) + *prefSize = *maxSize; + else + *prefSize = prefSizeHint; + + if (policy & QSizePolicy::ExpandFlag) + *expSize = *maxSize; + else + *expSize = *prefSize; +} + void AnchorData::refreshSizeHints(qreal effectiveSpacing) { - if (!isLayoutAnchor && (from->m_item == to->m_item)) { - QGraphicsLayoutItem *item = from->m_item; + const bool isInternalAnchor = from->m_item == to->m_item; - const QGraphicsAnchorLayoutPrivate::Orientation orient = QGraphicsAnchorLayoutPrivate::edgeOrientation(from->m_edge); - const Qt::AnchorPoint centerEdge = QGraphicsAnchorLayoutPrivate::pickEdge(Qt::AnchorHorizontalCenter, orient); + if (isInternalAnchor) { + const QGraphicsAnchorLayoutPrivate::Orientation orient = + QGraphicsAnchorLayoutPrivate::edgeOrientation(from->m_edge); - QSizePolicy::Policy policy; - qreal minSizeHint, prefSizeHint, maxSizeHint; - if (orient == QGraphicsAnchorLayoutPrivate::Horizontal) { - policy = item->sizePolicy().horizontalPolicy(); - minSizeHint = item->effectiveSizeHint(Qt::MinimumSize).width(); - prefSizeHint = item->effectiveSizeHint(Qt::PreferredSize).width(); - maxSizeHint = item->effectiveSizeHint(Qt::MaximumSize).width(); + if (isLayoutAnchor) { + minSize = 0; + prefSize = 0; + expSize = 0; + maxSize = QWIDGETSIZE_MAX; } else { - policy = item->sizePolicy().verticalPolicy(); - minSizeHint = item->effectiveSizeHint(Qt::MinimumSize).height(); - prefSizeHint = item->effectiveSizeHint(Qt::PreferredSize).height(); - maxSizeHint = item->effectiveSizeHint(Qt::MaximumSize).height(); + QGraphicsLayoutItem *item = from->m_item; + sizeHintsFromItem(item, orient, &minSize, &prefSize, &expSize, &maxSize); } - // minSize, prefSize and maxSize are initialized - // with item's preferred Size: this is QSizePolicy::Fixed. - // - // Then we check each flag to find the resultant QSizePolicy, - // according to the following table: - // - // constant value - // QSizePolicy::Fixed 0 - // QSizePolicy::Minimum GrowFlag - // QSizePolicy::Maximum ShrinkFlag - // QSizePolicy::Preferred GrowFlag | ShrinkFlag - // QSizePolicy::Ignored GrowFlag | ShrinkFlag | IgnoreFlag - prefSize = prefSizeHint; - minSize = prefSize; - maxSize = prefSize; - - if (policy & QSizePolicy::GrowFlag) - maxSize = maxSizeHint; - - if (policy & QSizePolicy::ShrinkFlag) - minSize = minSizeHint; - - if (policy & QSizePolicy::IgnoreFlag) - prefSize = minSize; + const Qt::AnchorPoint centerEdge = + QGraphicsAnchorLayoutPrivate::pickEdge(Qt::AnchorHorizontalCenter, orient); bool hasCenter = (from->m_edge == centerEdge || to->m_edge == centerEdge); if (hasCenter) { minSize /= 2; prefSize /= 2; + expSize /= 2; maxSize /= 2; } - if (policy & QSizePolicy::ExpandFlag) { - expSize = maxSize; - } else { - expSize = prefSize; - } - - // Set the anchor effective sizes to preferred. - // - // Note: The idea here is that all items should remain at their - // preferred size unless where that's impossible. In cases where - // the item is subject to restrictions (anchored to the layout - // edges, for instance), the simplex solver will be run to - // recalculate and override the values we set here. - sizeAtMinimum = prefSize; - sizeAtPreferred = prefSize; - sizeAtExpanding = prefSize; - sizeAtMaximum = prefSize; - } else if (!hasSize) { // Anchor has no size defined, use given default information minSize = effectiveSpacing; prefSize = effectiveSpacing; expSize = effectiveSpacing; maxSize = effectiveSpacing; - - sizeAtMinimum = prefSize; - sizeAtPreferred = prefSize; - sizeAtExpanding = prefSize; - sizeAtMaximum = prefSize; } + + // Set the anchor effective sizes to preferred. + // + // Note: The idea here is that all items should remain at their + // preferred size unless where that's impossible. In cases where + // the item is subject to restrictions (anchored to the layout + // edges, for instance), the simplex solver will be run to + // recalculate and override the values we set here. + sizeAtMinimum = prefSize; + sizeAtPreferred = prefSize; + sizeAtExpanding = prefSize; + sizeAtMaximum = prefSize; } void ParallelAnchorData::updateChildrenSizes() diff --git a/tests/auto/qgraphicsanchorlayout/tst_qgraphicsanchorlayout.cpp b/tests/auto/qgraphicsanchorlayout/tst_qgraphicsanchorlayout.cpp index 4ad48c7..91e5bb3 100644 --- a/tests/auto/qgraphicsanchorlayout/tst_qgraphicsanchorlayout.cpp +++ b/tests/auto/qgraphicsanchorlayout/tst_qgraphicsanchorlayout.cpp @@ -1271,7 +1271,7 @@ void tst_QGraphicsAnchorLayout::sizePolicy() w1->adjustSize(); QCOMPARE(l->effectiveSizeHint(Qt::MinimumSize), QSizeF(0, 0)); - QCOMPARE(l->effectiveSizeHint(Qt::PreferredSize), QSizeF(0, 0)); + QCOMPARE(l->effectiveSizeHint(Qt::PreferredSize), QSizeF(100, 100)); QCOMPARE(l->effectiveSizeHint(Qt::MaximumSize), QSizeF(100, 100)); delete p; |