ENH: Friendlier segment editor widget for better intergration in layouts

Author: johan-andruejol

Modules/Loadable/Segmentations/Widgets/Resources/UI/qMRMLSegmentEditorWidget.ui

@@ -258,7 +258,7 @@
    <item>
     <widget class="QGroupBox" name="EffectsGroupBox">
      <property name="sizePolicy">
-      <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+      <sizepolicy hsizetype="Preferred" vsizetype="Maximum">
        <horstretch>0</horstretch>
        <verstretch>0</verstretch>
       </sizepolicy>
@@ -274,7 +274,7 @@
    <item>
     <widget class="QGroupBox" name="OptionsGroupBox">
      <property name="sizePolicy">
-      <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+      <sizepolicy hsizetype="Preferred" vsizetype="Maximum">
        <horstretch>0</horstretch>
        <verstretch>0</verstretch>
       </sizepolicy>
@@ -377,7 +377,7 @@
    <item>
     <widget class="ctkCollapsibleGroupBox" name="MaskingGroupBox">
      <property name="sizePolicy">
-      <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+      <sizepolicy hsizetype="Preferred" vsizetype="Maximum">
        <horstretch>0</horstretch>
        <verstretch>0</verstretch>
       </sizepolicy>
@@ -468,19 +468,6 @@
      </layout>
     </widget>
    </item>
-   <item>
-    <spacer name="verticalSpacer">
-     <property name="orientation">
-      <enum>Qt::Vertical</enum>
-     </property>
-     <property name="sizeHint" stdset="0">
-      <size>
-       <width>20</width>
-       <height>40</height>
-      </size>
-     </property>
-    </spacer>
-   </item>
   </layout>
  </widget>
  <customwidgets>

Modules/Scripted/SegmentEditor/SegmentEditor.py

@@ -60,6 +60,7 @@ def setup(self):
     self.selectParameterNode()
     self.editor.setMRMLScene(slicer.mrmlScene)
     self.layout.addWidget(self.editor)
+    self.layout.addStretch()
 
     # Observe editor effect registrations to make sure that any effects that are registered
     # later will show up in the segment editor widget. For example, if Segment Editor is set