QGraphicsAnchorLayout: Add convencience "fill" methods

Adding "fillWidth()", "fillHeight()" and "fill()". These convenience
methods simplify the creation of anchor setups where some items
are meant to use the full width and/or height of the layout.

For instance, instead of creating four anchors (bottom, top, left, right)
between an item and the layout, to make it use the full layout area, the
user can call layout->fill(item).

It is also possible to make an item assume the same width or height of
another item, calling layout->fill(firstItem, secondItem).

Signed-off-by: Eduardo M. Fleury <eduardo.fleury@openbossa.org>

1 files changed, 36 insertions, 0 deletions

diff --git a/src/gui/graphicsview/qgraphicsanchorlayout.h b/src/gui/graphicsview/qgraphicsanchorlayout.h
index cd1c080..74075ff 100644
--- a/src/gui/graphicsview/qgraphicsanchorlayout.h
+++ b/src/gui/graphicsview/qgraphicsanchorlayout.h
@@ -78,6 +78,13 @@ public:
     void removeAnchor(QGraphicsLayoutItem *firstItem, Edge firstEdge,
                       QGraphicsLayoutItem *secondItem, Edge secondEdge);
 
+    inline void fillWidth(QGraphicsLayoutItem *item,
+                          QGraphicsLayoutItem *relativeTo = 0);
+    inline void fillHeight(QGraphicsLayoutItem *item,
+                           QGraphicsLayoutItem *relativeTo = 0);
+    inline void fill(QGraphicsLayoutItem *item,
+                     QGraphicsLayoutItem *relativeTo = 0);
+
     void setSpacing(qreal spacing, Qt::Orientations orientations = Qt::Horizontal|Qt::Vertical);
     qreal spacing(Qt::Orientation) const;
 
@@ -98,6 +105,35 @@ private:
     Q_DECLARE_PRIVATE(QGraphicsAnchorLayout)
 };
 
+void QGraphicsAnchorLayout::fillWidth(QGraphicsLayoutItem *item,
+                                      QGraphicsLayoutItem *relativeTo)
+{
+    if (!relativeTo)
+        relativeTo = this;
+
+    anchor(relativeTo, Left, item, Left);
+    anchor(item, Right, relativeTo, Right);
+}
+
+void QGraphicsAnchorLayout::fillHeight(QGraphicsLayoutItem *item,
+                                       QGraphicsLayoutItem *relativeTo)
+{
+    if (!relativeTo)
+        relativeTo = this;
+
+    anchor(relativeTo, Top, item, Top);
+    anchor(item, Bottom, relativeTo, Bottom);
+}
+
+void QGraphicsAnchorLayout::fill(QGraphicsLayoutItem *item,
+                                 QGraphicsLayoutItem *relativeTo)
+{
+    if (!relativeTo)
+        relativeTo = this;
+
+    fillWidth(item, relativeTo);
+    fillHeight(item, relativeTo);
+}
 
 #endif