adjust instrument layout

GUI/View/Device/ScanEditor.cpp

@@ -32,6 +32,7 @@ ScanEditor::ScanEditor(QWidget* parent, InstrumentItem* instr_item, ScanItem* it
     : CollapsibleGroupBox("Beam and scan parameters", parent, item->expandBeamParameters)
 {
     auto* layout = new QGridLayout(body());
+    layout->setAlignment(Qt::AlignTop);
 
     //... Intensity
 

GUI/View/Instrument/DepthprobeInstrumentEditor.cpp

@@ -32,7 +32,7 @@ DepthprobeInstrumentEditor::DepthprobeInstrumentEditor(DepthprobeInstrumentItem*
                                          "Number of points in scan across sample bulk");
     layout->addWidget(depthAxisEditor);
 
-    layout->addStretch();
+    layout->addStretch(1);
 
     connect(scanEditor, &ScanEditor::dataChanged, this, &IComponentEditor::dataChanged);
     connect(depthAxisEditor, &AxisForm::dataChanged, this, &IComponentEditor::dataChanged);

GUI/View/Instrument/OffspecInstrumentEditor.cpp

@@ -34,7 +34,7 @@ OffspecInstrumentEditor::OffspecInstrumentEditor(OffspecInstrumentItem* instrume
     auto* polMatricesAnalysisEditor = new PolarizationAnalysisEditor(this, instrument);
     layout->addWidget(polMatricesAnalysisEditor);
 
-    layout->addStretch();
+    layout->addStretch(1);
 
     connect(scanEditor, &ScanEditor::dataChanged, this, &IComponentEditor::dataChanged);
     connect(detectorEditor, &OffspecDetectorEditor::dataChanged, this,

GUI/View/Instrument/SpecularInstrumentEditor.cpp

@@ -34,7 +34,7 @@ SpecularInstrumentEditor::SpecularInstrumentEditor(SpecularInstrumentItem* instr
     auto* backgroundForm = new BackgroundForm(this, instrument);
     layout->addWidget(backgroundForm);
 
-    layout->addStretch();
+    layout->addStretch(1);
 
     connect(scanEditor, &ScanEditor::dataChanged, this, &IComponentEditor::dataChanged);
     connect(polMatricesAnalysisEditor, &PolarizationAnalysisEditor::dataChanged, this,

GUI/View/View/InstrumentView.cpp

@@ -60,7 +60,7 @@ InstrumentView::InstrumentView()
 
     hLayout->addWidget(m_scroll_area);
     m_scroll_area->setWidgetResizable(true);
-    m_scroll_area->setMinimumWidth(1000);
+    m_scroll_area->setMinimumWidth(950);
     m_scroll_area->setWidget(new QWidget(m_scroll_area)); // initial state: blank widget
 
     hLayout->addStretch(1);