SampleEditor inherit frm QScrollArea

GUI/View/SampleDesigner/SampleEditor.cpp

@@ -24,22 +24,16 @@
 #include <QActionGroup>
 #include <QBoxLayout>
 #include <QPushButton>
-#include <QScrollArea>
 
 SampleEditor::SampleEditor(QWidget* parent, ProjectDocument* document)
-    : QWidget(parent)
+    : QScrollArea(parent)
     , m_currentSampleWidget(nullptr)
     , m_currentSample(nullptr)
     , m_document(document)
 {
-    m_scrollArea = new QScrollArea(this);
-    m_scrollArea->setWidgetResizable(true);
-    m_scrollArea->setWidget(createEmptyWidget());
-
-    auto* mainLayout = new QVBoxLayout(this);
-    mainLayout->setContentsMargins(0, 0, 0, 0);
-    mainLayout->setSpacing(0);
-    mainLayout->addWidget(m_scrollArea);
+    QScrollArea::setWidgetResizable(true);
+    QScrollArea::setWidget(createEmptyWidget());
+
 }
 
 SampleEditor::~SampleEditor()
@@ -53,11 +47,11 @@ void SampleEditor::setCurrentSample(SampleItem* sampleItem)
         m_editControllers[m_currentSample]->setSampleForm(nullptr);
 
     m_currentSampleWidget = nullptr;
-    delete m_scrollArea->takeWidget();
+    delete QScrollArea::takeWidget();
 
     m_currentSample = sampleItem;
     if (m_currentSample == nullptr) {
-        m_scrollArea->setWidget(createEmptyWidget());
+        QScrollArea::setWidget(createEmptyWidget());
         return;
     }
 
@@ -75,7 +69,7 @@ void SampleEditor::setCurrentSample(SampleItem* sampleItem)
     m_currentSampleWidget = new SampleForm(this, m_currentSample, ec);
     ec->setSampleForm(m_currentSampleWidget);
     m_currentSampleWidget->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
-    m_scrollArea->setWidget(m_currentSampleWidget);
+    QScrollArea::setWidget(m_currentSampleWidget);
 }
 
 void SampleEditor::createLayerColors() // #baLayerEditor move to better place

GUI/View/SampleDesigner/SampleEditor.h

@@ -16,7 +16,7 @@
 #define BORNAGAIN_GUI_VIEW_SAMPLEDESIGNER_SAMPLEEDITOR_H
 
 #include <QMap>
-#include <QWidget>
+#include <QScrollArea>
 
 class Item3D;
 class SampleForm;
@@ -26,7 +26,7 @@ class QScrollArea;
 class SampleEditorController;
 
 //! Sample editor with layer oriented presentation of a sample
-class SampleEditor : public QWidget {
+class SampleEditor : public QScrollArea {
     Q_OBJECT
 public:
     SampleEditor(QWidget* parent, ProjectDocument* document);
@@ -47,7 +47,6 @@ private:
     QWidget* createEmptyWidget();
 
     SampleForm* m_currentSampleWidget;
-    QScrollArea* m_scrollArea;
     SampleItem* m_currentSample = nullptr;
     QMap<SampleItem*, SampleEditorController*> m_editControllers;
     ProjectDocument* m_document;