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-rw-r--r--src/gui/graphicsview/qgraphicsscene.cpp94
-rw-r--r--src/gui/graphicsview/qgraphicsscene_p.h4
-rw-r--r--src/gui/graphicsview/qgraphicsview.cpp4
3 files changed, 88 insertions, 14 deletions
diff --git a/src/gui/graphicsview/qgraphicsscene.cpp b/src/gui/graphicsview/qgraphicsscene.cpp
index e13a767..b4dc62c 100644
--- a/src/gui/graphicsview/qgraphicsscene.cpp
+++ b/src/gui/graphicsview/qgraphicsscene.cpp
@@ -1358,6 +1358,48 @@ QGraphicsWidget *QGraphicsScenePrivate::windowForItem(const QGraphicsItem *item)
return 0;
}
+
+QList<QGraphicsItem *> QGraphicsScenePrivate::items_helper(const QPointF &pos) const
+{
+ QList<QGraphicsItem *> items;
+
+ // The index returns a rough estimate of what items are inside the rect.
+ // Refine it by iterating through all returned items.
+ QRectF adjustedRect = QRectF(pos, QSize(1,1));
+ foreach (QGraphicsItem *item, estimateItemsInRect(adjustedRect)) {
+ // Find the item's scene transform in a clever way.
+ QTransform x = item->sceneTransform();
+ bool keep = false;
+
+ // ### _q_adjustedRect is only needed because QRectF::intersects,
+ // QRectF::contains and QTransform::map() and friends don't work with
+ // flat rectangles.
+ QRectF br = _q_adjustedRect(item->boundingRect());
+ // Rect intersects/contains item's shape
+ if (QRectF_intersects(adjustedRect, x.mapRect(br))) {
+ bool ok;
+ QTransform xinv = x.inverted(&ok);
+ if (ok) {
+ if (item->contains(xinv.map(pos))) {
+ items << item;
+ keep = true;
+ }
+ }
+ }
+
+ if (keep && (item->flags() & QGraphicsItem::ItemClipsChildrenToShape)) {
+ // Recurse into children that clip children.
+ bool ok;
+ QTransform xinv = x.inverted(&ok);
+ if (ok)
+ childItems_helper(&items, item, xinv.map(pos));
+ }
+ }
+
+ sortItems(&items, Qt::AscendingOrder, sortCacheEnabled);
+ return items;
+}
+
QList<QGraphicsItem *> QGraphicsScenePrivate::items_helper(const QRectF &rect,
Qt::ItemSelectionMode mode,
Qt::SortOrder order) const
@@ -1392,7 +1434,7 @@ QList<QGraphicsItem *> QGraphicsScenePrivate::items_helper(const QRectF &rect,
bool ok;
QTransform xinv = x.inverted(&ok);
if (ok) {
- if (path == QPainterPath())
+ if (path.isEmpty())
path.addRect(rect);
if (itemCollidesWithPath(item, xinv.map(path), mode)) {
items << item;
@@ -1536,6 +1578,42 @@ QList<QGraphicsItem *> QGraphicsScenePrivate::items_helper(const QPainterPath &p
void QGraphicsScenePrivate::childItems_helper(QList<QGraphicsItem *> *items,
const QGraphicsItem *parent,
+ const QPointF &pos) const
+{
+ bool parentClip = (parent->flags() & QGraphicsItem::ItemClipsChildrenToShape);
+ if (parentClip && parent->d_ptr->isClippedAway())
+ return;
+ // ### is this needed?
+ if (parentClip && !parent->boundingRect().contains(pos))
+ return;
+
+ QList<QGraphicsItem *> &children = parent->d_ptr->children;
+ for (int i = 0; i < children.size(); ++i) {
+ QGraphicsItem *item = children.at(i);
+ if (item->d_ptr->hasTransform && !item->transform().isInvertible())
+ continue;
+
+ // Skip invisible items and all their children.
+ if (item->d_ptr->isInvisible())
+ continue;
+
+ bool keep = false;
+ if (!item->d_ptr->isClippedAway()) {
+ if (item->contains(item->mapFromParent(pos))) {
+ items->append(item);
+ keep = true;
+ }
+ }
+
+ if ((keep || !(item->flags() & QGraphicsItem::ItemClipsChildrenToShape)) && !item->d_ptr->children.isEmpty())
+ // Recurse into children.
+ childItems_helper(items, item, item->mapFromParent(pos));
+ }
+}
+
+
+void QGraphicsScenePrivate::childItems_helper(QList<QGraphicsItem *> *items,
+ const QGraphicsItem *parent,
const QRectF &rect,
Qt::ItemSelectionMode mode) const
{
@@ -1597,6 +1675,7 @@ void QGraphicsScenePrivate::childItems_helper(QList<QGraphicsItem *> *items,
}
}
+
void QGraphicsScenePrivate::childItems_helper(QList<QGraphicsItem *> *items,
const QGraphicsItem *parent,
const QPolygonF &polygon,
@@ -2380,17 +2459,8 @@ QList<QGraphicsItem *> QGraphicsScene::items() const
*/
QList<QGraphicsItem *> QGraphicsScene::items(const QPointF &pos) const
{
- QList<QGraphicsItem *> itemsAtPoint;
-
- // Find all items within a 1x1 rect area starting at pos. This can be
- // inefficient for scenes that use small coordinates (like unity
- // coordinates), or for detailed graphs. ### The index should support
- // fetching items at a pos to avoid this limitation.
- foreach (QGraphicsItem *item, items(QRectF(pos, QSizeF(1, 1)), Qt::IntersectsItemBoundingRect)) {
- if (item->contains(item->mapFromScene(pos)))
- itemsAtPoint << item;
- }
- return itemsAtPoint;
+ Q_D(const QGraphicsScene);
+ return d->items_helper(pos);
}
diff --git a/src/gui/graphicsview/qgraphicsscene_p.h b/src/gui/graphicsview/qgraphicsscene_p.h
index 9c165d1..befbbd8 100644
--- a/src/gui/graphicsview/qgraphicsscene_p.h
+++ b/src/gui/graphicsview/qgraphicsscene_p.h
@@ -197,6 +197,7 @@ public:
void mousePressEventHandler(QGraphicsSceneMouseEvent *mouseEvent);
QGraphicsWidget *windowForItem(const QGraphicsItem *item) const;
+ QList<QGraphicsItem *> items_helper(const QPointF &pos) const;
QList<QGraphicsItem *> items_helper(const QRectF &rect,
Qt::ItemSelectionMode mode,
Qt::SortOrder order) const;
@@ -208,6 +209,9 @@ public:
Qt::SortOrder order) const;
void childItems_helper(QList<QGraphicsItem *> *items,
const QGraphicsItem *parent,
+ const QPointF &pos) const;
+ void childItems_helper(QList<QGraphicsItem *> *items,
+ const QGraphicsItem *parent,
const QRectF &rect,
Qt::ItemSelectionMode mode) const;
void childItems_helper(QList<QGraphicsItem *> *items,
diff --git a/src/gui/graphicsview/qgraphicsview.cpp b/src/gui/graphicsview/qgraphicsview.cpp
index f0d360a..ba9cdbf 100644
--- a/src/gui/graphicsview/qgraphicsview.cpp
+++ b/src/gui/graphicsview/qgraphicsview.cpp
@@ -2251,9 +2251,9 @@ QList<QGraphicsItem *> QGraphicsView::items(const QPoint &pos) const
if (d->scene->d_func()->largestUntransformableItem.isNull()) {
if ((d->identityMatrix || d->matrix.type() <= QTransform::TxScale)) {
QTransform xinv = viewportTransform().inverted();
- return d->scene->items(xinv.mapRect(QRectF(pos.x(), pos.y(), 1, 1)));
+ return d->scene->items(xinv.map(pos));
}
- return d->scene->items(mapToScene(pos.x(), pos.y(), 2, 2));
+ return d->scene->items(mapToScene(pos));
}
QPainterPath path;
generated by cgit v0.12 at 2024-11-23 10:11:29 (GMT)