makeCurrent when destroying ManagedDisplayWidgets

Fixes #1555

app/widget/scope/histogram/histogram.cpp

@@ -29,19 +29,16 @@
 
 namespace olive {
 
-HistogramScope::HistogramScope(QWidget* parent) :
-  ScopeBase(parent)
-{
-}
+#define super ScopeBase
 
-HistogramScope::~HistogramScope()
+HistogramScope::HistogramScope(QWidget* parent) :
+  super(parent)
 {
-  OnDestroy();
 }
 
 void HistogramScope::OnInit()
 {
-  ScopeBase::OnInit();
+  super::OnInit();
 
   ShaderCode secondary_code(FileFunctions::ReadFileAsString(":/shaders/rgbhistogram_secondary.frag"),
                             FileFunctions::ReadFileAsString(":/shaders/rgbhistogram.vert"));
@@ -50,7 +47,7 @@ void HistogramScope::OnInit()
 
 void HistogramScope::OnDestroy()
 {
-  ScopeBase::OnDestroy();
+  super::OnDestroy();
 
   pipeline_secondary_.clear();
   texture_row_sums_ = nullptr;

app/widget/scope/histogram/histogram.h

@@ -31,7 +31,7 @@ class HistogramScope : public ScopeBase
 public:
   HistogramScope(QWidget* parent = nullptr);
 
-  virtual ~HistogramScope() override;
+  MANAGEDDISPLAYWIDGET_DEFAULT_DESTRUCTOR(HistogramScope)
 
 protected slots:
   virtual void OnInit() override;

app/widget/scope/scopebase/scopebase.cpp

@@ -24,18 +24,15 @@
 
 namespace olive {
 
+#define super ManagedDisplayWidget
+
 ScopeBase::ScopeBase(QWidget* parent) :
-  ManagedDisplayWidget(parent),
+  super(parent),
   buffer_(nullptr)
 {
   EnableDefaultContextMenu();
 }
 
-ScopeBase::~ScopeBase()
-{
-  OnDestroy();
-}
-
 void ScopeBase::SetBuffer(Frame *frame)
 {
   buffer_ = frame;
@@ -45,7 +42,7 @@ void ScopeBase::SetBuffer(Frame *frame)
 
 void ScopeBase::showEvent(QShowEvent* e)
 {
-  ManagedDisplayWidget::showEvent(e);
+  super::showEvent(e);
 
   UploadTextureFromBuffer();
 }
@@ -92,7 +89,7 @@ void ScopeBase::UploadTextureFromBuffer()
 
 void ScopeBase::OnInit()
 {
-  ManagedDisplayWidget::OnInit();
+  super::OnInit();
 
   UploadTextureFromBuffer();
 
@@ -114,7 +111,7 @@ void ScopeBase::OnPaint()
 
 void ScopeBase::OnDestroy()
 {
-  ManagedDisplayWidget::OnDestroy();
+  super::OnDestroy();
 
   managed_tex_ = nullptr;
   texture_ = nullptr;

app/widget/scope/scopebase/scopebase.h

@@ -32,7 +32,7 @@ class ScopeBase : public ManagedDisplayWidget
 public:
   ScopeBase(QWidget* parent = nullptr);
 
-  virtual ~ScopeBase() override;
+  MANAGEDDISPLAYWIDGET_DEFAULT_DESTRUCTOR(ScopeBase)
 
 public slots:
   void SetBuffer(Frame* frame);

app/widget/scope/waveform/waveform.cpp

@@ -33,14 +33,11 @@
 
 namespace olive {
 
-WaveformScope::WaveformScope(QWidget* parent) :
-  ScopeBase(parent)
-{
-}
+#define super ScopeBase
 
-WaveformScope::~WaveformScope()
+WaveformScope::WaveformScope(QWidget* parent) :
+  super(parent)
 {
-  OnDestroy();
 }
 
 ShaderCode WaveformScope::GenerateShaderCode()

app/widget/scope/waveform/waveform.h

@@ -31,7 +31,7 @@ class WaveformScope : public ScopeBase
 public:
   WaveformScope(QWidget* parent = nullptr);
 
-  virtual ~WaveformScope() override;
+  MANAGEDDISPLAYWIDGET_DEFAULT_DESTRUCTOR(WaveformScope)
 
 protected:
   virtual ShaderCode GenerateShaderCode() override;