add slider example with valueChanged signal

examples/sliderexamples.cpp

@@ -1,11 +1,13 @@
 #include <QVBoxLayout>
+#include <QLineEdit>
 #include "sliderexamples.h"
 #include "components/slider.h"
 #include "exampleview.h"
 #include "frame.h"
 
 SliderExamples::SliderExamples(QWidget *parent)
-    : ExampleList(parent)
+    : ExampleList(parent),
+      _edit(new QLineEdit)
 {
     QLayout *mainLayout = widget()->layout();
 
@@ -40,17 +42,30 @@ SliderExamples::SliderExamples(QWidget *parent)
         mainLayout->addWidget(frame);
     }
     {
+        QWidget *widget = new QWidget;
+        QHBoxLayout *layout = new QHBoxLayout;
+
+        widget->setLayout(layout);
+
         Slider *slider = new Slider;
+        QLineEdit *edit = new QLineEdit;
+
+        layout->addWidget(slider);
+        layout->addWidget(edit);
+        layout->setStretch(0, 1);
+        layout->setStretch(1, 1);
 
         ExampleView *view = new ExampleView;
-        view->setWidget(slider);
+        view->setWidget(widget);
 
         Frame *frame = new Frame;
         frame->setCodeSnippet(
-            "Slider *slider = new Slider;"
+            "x"
         );
         frame->setWidget(view);
 
+        connect(slider, SIGNAL(valueChanged(int)), this, SLOT(updateValue(int)));
+
         mainLayout->addWidget(frame);
     }
 }
@@ -58,3 +73,8 @@ SliderExamples::SliderExamples(QWidget *parent)
 SliderExamples::~SliderExamples()
 {
 }
+
+void SliderExamples::updateValue(int value)
+{
+    _edit->setText(QString::number(value));
+}

examples/sliderexamples.h

@@ -3,6 +3,8 @@
 
 #include "examplelist.h"
 
+class QLineEdit;
+
 class SliderExamples : public ExampleList
 {
     Q_OBJECT
@@ -10,6 +12,12 @@ class SliderExamples : public ExampleList
 public:
     explicit SliderExamples(QWidget *parent = 0);
     ~SliderExamples();
+
+protected slots:
+    void updateValue(int value);
+
+private:
+    QLineEdit *const _edit;
 };
 
 #endif // SLIDEREXAMPLES_H