[tauruslib-devel] [PATCH] Fix bug-142: Avoid bad stretch when using extrawidget in forms

[<cpa...@ce...>]

From: cpascual <cpa...@ce...>

When using a TaurusValue customized with an extra widget, the grid
layout behaves in an unexpected way regarding to its rows/columns
stretch (see http://sf.net/p/tauruslib/tickets/142/#f4e4/9e68).
Prevent this by inserting a spacer in the extrawidget column if no
extrawidget is used.
---
 lib/taurus/qt/qtgui/panel/taurusvalue.py | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/lib/taurus/qt/qtgui/panel/taurusvalue.py b/lib/taurus/qt/qtgui/panel/taurusvalue.py
index 543ba0e..dff58d2 100644
--- a/lib/taurus/qt/qtgui/panel/taurusvalue.py
+++ b/lib/taurus/qt/qtgui/panel/taurusvalue.py
@@ -833,11 +833,17 @@ class TaurusValue(Qt.QWidget, TaurusBaseWidget):
                                              1, 1, -1, alignment)
     
     def addExtraWidgetToLayout(self):
-        if self._extraWidget is not None and self.parent() is not None:
-            alignment = getattr(self._extraWidget, 'layoutAlignment', 
-                                Qt.Qt.AlignmentFlag(0))
-            self.parent().layout().addWidget(self._extraWidget, self._row,
-                                             5, 1, 1, alignment)
+        parent = self.parent()
+        if parent is not None:
+            if self._extraWidget is None:
+                # Adding this spacer is some voodoo magic to avoid bug #142
+                # See: http://sf.net/p/tauruslib/tickets/142/
+                parent.layout().addItem(Qt.QSpacerItem(0, 0), self._row, 5)
+            else:
+                alignment = getattr(self._extraWidget, 'layoutAlignment',
+                                    Qt.Qt.AlignmentFlag(0))
+                parent.layout().addWidget(self._extraWidget, self._row,
+                                            5, 1, 1, alignment)
 
     @Qt.pyqtSignature("parentModelChanged(const QString &)")
     def parentModelChanged(self, parentmodel_name):
-- 
2.6.4