[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 | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/lib/taurus/qt/qtgui/panel/taurusvalue.py b/lib/taurus/qt/qtgui/panel/taurusvalue.py
index 543ba0e..83db8ec 100644
--- a/lib/taurus/qt/qtgui/panel/taurusvalue.py
+++ b/lib/taurus/qt/qtgui/panel/taurusvalue.py
@@ -350,7 +350,7 @@ class TaurusValue(Qt.QWidget, TaurusBaseWidget):
         
         #insert self into the 0-column
         pl.addWidget(self, self._row, 0) #this widget is invisible (except in design mode)
-        
+
         #Create/update the subwidgets (this also inserts them in the layout)
         if not self._designMode:  #in design mode, no subwidgets are created
             self.updateLabelWidget()
@@ -833,7 +833,11 @@ class TaurusValue(Qt.QWidget, TaurusBaseWidget):
                                              1, 1, -1, alignment)
     
     def addExtraWidgetToLayout(self):
-        if self._extraWidget is not None and self.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/
+            self.parent().layout().addItem(Qt.QSpacerItem(0, 0), self._row, 5)
+        elif self.parent() is not None:
             alignment = getattr(self._extraWidget, 'layoutAlignment', 
                                 Qt.Qt.AlignmentFlag(0))
             self.parent().layout().addWidget(self._extraWidget, self._row,
-- 
2.6.4