QGraphicsAnchorLayoutPrivate: Fixing initial geometry values for new layout items

Now every item starts with its geometry on ((0,0), preferredSize()).
By doing this we guarantee that every item will have a known initial value, which
can be specially useful on float cases for instance.

Signed-off-by: Jesus Sanchez-Palencia <jesus.palencia@openbossa.org>
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@openbossa.org>

1 files changed, 25 insertions, 12 deletions

diff --git a/src/gui/graphicsview/qgraphicsanchorlayout_p.cpp b/src/gui/graphicsview/qgraphicsanchorlayout_p.cpp
index e760642..87f5aa0 100644
--- a/src/gui/graphicsview/qgraphicsanchorlayout_p.cpp
+++ b/src/gui/graphicsview/qgraphicsanchorlayout_p.cpp
@@ -2068,22 +2068,35 @@ void QGraphicsAnchorLayoutPrivate::setItemsGeometries(const QRectF &geom)
     right = geom.right() - right;
 
     foreach (QGraphicsLayoutItem *item, items) {
-        firstH = internalVertex(item, Qt::AnchorLeft);
-        secondH = internalVertex(item, Qt::AnchorRight);
-        firstV = internalVertex(item, Qt::AnchorTop);
-        secondV = internalVertex(item, Qt::AnchorBottom);
-
         QRectF newGeom;
-        newGeom.setTop(top + firstV->distance);
-        newGeom.setBottom(top + secondV->distance);
+        QSizeF itemPreferredSize = item->effectiveSizeHint(Qt::PreferredSize);
+        if (m_nonFloatItems[Horizontal].contains(item)) {
+            firstH = internalVertex(item, Qt::AnchorLeft);
+            secondH = internalVertex(item, Qt::AnchorRight);
+
+            if (visualDir == Qt::LeftToRight) {
+                newGeom.setLeft(left + firstH->distance);
+                newGeom.setRight(left + secondH->distance);
+            } else {
+                newGeom.setLeft(right - secondH->distance);
+                newGeom.setRight(right - firstH->distance);
+            }
+        } else {
+            newGeom.setLeft(0);
+            newGeom.setRight(itemPreferredSize.width());
+        }
+
+        if (m_nonFloatItems[Vertical].contains(item)) {
+            firstV = internalVertex(item, Qt::AnchorTop);
+            secondV = internalVertex(item, Qt::AnchorBottom);
 
-        if (visualDir == Qt::LeftToRight) {
-            newGeom.setLeft(left + firstH->distance);
-            newGeom.setRight(left + secondH->distance);
+            newGeom.setTop(top + firstV->distance);
+            newGeom.setBottom(top + secondV->distance);
         } else {
-            newGeom.setLeft(right - secondH->distance);
-            newGeom.setRight(right - firstH->distance);
+            newGeom.setTop(0);
+            newGeom.setBottom(itemPreferredSize.height());
         }
+
         item->setGeometry(newGeom);
     }
 }