implement paint event handler

components/circularprogress.cpp

@@ -1,4 +1,5 @@
 #include "circularprogress.h"
+#include <QPainter>
 #include "circularprogress_p.h"
 
 CircularProgressPrivate::CircularProgressPrivate(CircularProgress *q)
@@ -24,3 +25,10 @@ CircularProgress::CircularProgress(QWidget *parent)
 CircularProgress::~CircularProgress()
 {
 }
+
+void CircularProgress::paintEvent(QPaintEvent *event)
+{
+    QPainter painter(this);
+
+    painter.drawRect(rect());
+}

components/circularprogress.h

@@ -14,6 +14,8 @@ public:
     ~CircularProgress();
 
 protected:
+    void paintEvent(QPaintEvent *event) Q_DECL_OVERRIDE;
+
     const QScopedPointer<CircularProgressPrivate> d_ptr;
 
 private:

components/progress.cpp

@@ -1,4 +1,5 @@
 #include "progress.h"
+#include <QPainter>
 #include "progress_p.h"
 
 ProgressPrivate::ProgressPrivate(Progress *q)
@@ -24,3 +25,10 @@ Progress::Progress(QWidget *parent)
 Progress::~Progress()
 {
 }
+
+void Progress::paintEvent(QPaintEvent *event)
+{
+    QPainter painter(this);
+
+    painter.drawRect(rect());
+}

components/progress.h

@@ -14,6 +14,8 @@ public:
     ~Progress();
 
 protected:
+    void paintEvent(QPaintEvent *event) Q_DECL_OVERRIDE;
+
     const QScopedPointer<ProgressPrivate> d_ptr;
 
 private:

examples/appbarexamples.cpp

@@ -2,6 +2,7 @@
 #include "appbarexamples.h"
 #include "components/appbar.h"
 #include "frame.h"
+#include "components/progress.h"
 
 AppBarExamples::AppBarExamples(QWidget *parent)
     : ExampleList(parent)
@@ -34,6 +35,22 @@ AppBarExamples::AppBarExamples(QWidget *parent)
         );
         frame->setWidget(area);
 
+        mainLayout->addWidget(frame);
+    }
+    {
+        QWidget *widget = new QWidget;
+        QVBoxLayout *layout = new QVBoxLayout;
+
+        widget->setLayout(layout);
+
+        Progress *p = new Progress;
+
+        Frame *frame = new Frame;
+        frame->setCodeSnippet(
+            ""
+        );
+        frame->setWidget(p);
+
         mainLayout->addWidget(frame);
     }
 }