Cleanup Widgets examples - parent ctor

Cleanup the Widgets examples - add missing parent parameter

Change-Id: I5cd7aa333dbb8e6e4b7b9e05c085120733da83ec
Reviewed-by: Samuel Gaist <samuel.gaist@idiap.ch>
Reviewed-by: Konstantin Shegunov <kshegunov@gmail.com>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

examples/widgets/widgets/calendarwidget/window.cpp

@@ -53,7 +53,8 @@
 #include "window.h"
 
 //! [0]
-Window::Window()
+Window::Window(QWidget *parent)
+    : QWidget(parent)
 {
     createPreviewGroupBox();
     createGeneralOptionsGroupBox();

examples/widgets/widgets/calendarwidget/window.h

@@ -70,7 +70,7 @@ class Window : public QWidget
     Q_OBJECT
 
 public:
-    Window();
+    Window(QWidget *parent = nullptr);
 
 private slots:
     void localeChanged(int index);

examples/widgets/widgets/charactermap/mainwindow.cpp

@@ -57,7 +57,8 @@
 
 Q_DECLARE_METATYPE(QFontComboBox::FontFilter)
 
-MainWindow::MainWindow()
+MainWindow::MainWindow(QWidget *parent)
+    : QMainWindow(parent)
 {
     QMenu *fileMenu = menuBar()->addMenu(tr("File"));
     fileMenu->addAction(tr("Quit"), this, &QWidget::close);

examples/widgets/widgets/charactermap/mainwindow.h

@@ -70,7 +70,7 @@ class MainWindow : public QMainWindow
     Q_OBJECT
 
 public:
-    MainWindow();
+    MainWindow(QWidget *parent = nullptr);
 
 public slots:
     void filterChanged(int);

examples/widgets/widgets/icons/mainwindow.cpp

@@ -60,7 +60,8 @@ enum { OtherSize = QStyle::PM_CustomBase };
 //! [40]
 
 //! [0]
-MainWindow::MainWindow()
+MainWindow::MainWindow(QWidget *parent)
+    : QMainWindow(parent)
 {
     QWidget *centralWidget = new QWidget(this);
     setCentralWidget(centralWidget);

examples/widgets/widgets/icons/mainwindow.h

@@ -74,7 +74,7 @@ class MainWindow : public QMainWindow
     Q_OBJECT
 
 public:
-    MainWindow();
+    MainWindow(QWidget *parent = nullptr);
 
     void loadImages(const QStringList &fileNames);
 

examples/widgets/widgets/imageviewer/imageviewer.cpp

@@ -59,10 +59,9 @@
 #include "imageviewer.h"
 
 //! [0]
-ImageViewer::ImageViewer()
+ImageViewer::ImageViewer(QWidget *parent)
-   : imageLabel(new QLabel)
+   : QMainWindow(parent), imageLabel(new QLabel),
-   , scrollArea(new QScrollArea)
+     scrollArea(new QScrollArea), scaleFactor(1)
-   , scaleFactor(1)
 {
     imageLabel->setBackgroundRole(QPalette::Base);
     imageLabel->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored);

examples/widgets/widgets/imageviewer/imageviewer.h

@@ -71,7 +71,7 @@ class ImageViewer : public QMainWindow
     Q_OBJECT
 
 public:
-    ImageViewer();
+    ImageViewer(QWidget *parent = nullptr);
     bool loadFile(const QString &);
 
 private slots:

examples/widgets/widgets/lineedits/window.cpp

@@ -53,7 +53,8 @@
 #include "window.h"
 
 //! [0]
-Window::Window()
+Window::Window(QWidget *parent)
+    : QWidget(parent)
 {
     QGroupBox *echoGroup = new QGroupBox(tr("Echo"));
 

examples/widgets/widgets/lineedits/window.h

@@ -64,7 +64,7 @@ class Window : public QWidget
     Q_OBJECT
 
 public:
-    Window();
+    Window(QWidget *parent = nullptr);
 
 public slots:
     void echoChanged(int);

examples/widgets/widgets/mousebuttons/buttontester.h

@@ -59,7 +59,8 @@
 class ButtonTester : public QTextEdit
 {
     Q_OBJECT
-
+public:
+    using QTextEdit::QTextEdit;
 protected:
     void    mousePressEvent(QMouseEvent *event) override;
     void    mouseReleaseEvent(QMouseEvent *event) override;

examples/widgets/widgets/scribble/mainwindow.cpp

@@ -54,9 +54,9 @@
 #include "scribblearea.h"
 
 //! [0]
-MainWindow::MainWindow()
+MainWindow::MainWindow(QWidget *parent)
+    : QMainWindow(parent), scribbleArea(new ScribbleArea(this))
 {
-    scribbleArea = new ScribbleArea;
     setCentralWidget(scribbleArea);
 
     createActions();

examples/widgets/widgets/scribble/mainwindow.h

@@ -62,7 +62,7 @@ class MainWindow : public QMainWindow
     Q_OBJECT
 
 public:
-    MainWindow();
+    MainWindow(QWidget *parent = nullptr);
 
 protected:
     void closeEvent(QCloseEvent *event) override;

examples/widgets/widgets/sliders/window.cpp

@@ -54,7 +54,8 @@
 #include "window.h"
 
 //! [0]
-Window::Window()
+Window::Window(QWidget *parent)
+    : QWidget(parent)
 {
     horizontalSliders = new SlidersGroup(Qt::Horizontal, tr("Horizontal"));
     verticalSliders = new SlidersGroup(Qt::Vertical, tr("Vertical"));

examples/widgets/widgets/sliders/window.h

@@ -69,7 +69,7 @@ class Window : public QWidget
     Q_OBJECT
 
 public:
-    Window();
+    Window(QWidget *parent = nullptr);
 
 private:
     void createControls(const QString &title);

examples/widgets/widgets/spinboxes/window.cpp

@@ -53,7 +53,8 @@
 #include "window.h"
 
 //! [0]
-Window::Window()
+Window::Window(QWidget *parent)
+    : QWidget(parent)
 {
     createSpinBoxes();
     createDateTimeEdits();

examples/widgets/widgets/spinboxes/window.h

@@ -67,7 +67,7 @@ class Window : public QWidget
     Q_OBJECT
 
 public:
-    Window();
+    Window(QWidget *parent = nullptr);
 
 public slots:
     void changePrecision(int decimals);

examples/widgets/widgets/stylesheet/mainwindow.cpp

@@ -53,7 +53,8 @@
 #include "mainwindow.h"
 #include "stylesheeteditor.h"
 
-MainWindow::MainWindow()
+MainWindow::MainWindow(QWidget *parent)
+    : QMainWindow(parent)
 {
     ui.setupUi(this);
 

examples/widgets/widgets/stylesheet/mainwindow.h

@@ -62,7 +62,7 @@ class MainWindow : public QMainWindow
     Q_OBJECT
 
 public:
-    MainWindow();
+    MainWindow(QWidget *parent = nullptr);
 
 private slots:
     void on_editStyleAction_triggered();

examples/widgets/widgets/tetrix/tetrixwindow.cpp

@@ -54,7 +54,8 @@
 #include "tetrixwindow.h"
 
 //! [0]
-TetrixWindow::TetrixWindow()
+TetrixWindow::TetrixWindow(QWidget *parent)
+    : QWidget(parent)
 {
     board = new TetrixBoard;
 //! [0]

examples/widgets/widgets/tetrix/tetrixwindow.h

@@ -67,7 +67,7 @@ class TetrixWindow : public QWidget
     Q_OBJECT
 
 public:
-    TetrixWindow();
+    TetrixWindow(QWidget *parent = nullptr);
 
 private:
     QLabel *createLabel(const QString &text);

examples/widgets/widgets/tooltips/sortingbox.cpp

@@ -55,7 +55,8 @@
 #include "sortingbox.h"
 
 //! [0]
-SortingBox::SortingBox()
+SortingBox::SortingBox(QWidget *parent)
+    : QWidget(parent)
 {
 //! [0] //! [1]
     setMouseTracking(true);

examples/widgets/widgets/tooltips/sortingbox.h

@@ -67,7 +67,7 @@ class SortingBox : public QWidget
     Q_OBJECT
 
 public:
-    SortingBox();
+    SortingBox(QWidget *parent = nullptr);
 
 protected:
     bool event(QEvent *event) override;

examples/widgets/widgets/windowflags/controllerwindow.cpp

@@ -53,7 +53,8 @@
 #include "controllerwindow.h"
 
 //! [0]
-ControllerWindow::ControllerWindow()
+ControllerWindow::ControllerWindow(QWidget *parent)
+    : QWidget(parent)
 {
     previewWindow = new PreviewWindow(this);
 

examples/widgets/widgets/windowflags/controllerwindow.h

@@ -69,7 +69,7 @@ class ControllerWindow : public QWidget
     Q_OBJECT
 
 public:
-    ControllerWindow();
+    ControllerWindow(QWidget *parent = nullptr);
 
 private slots:
     void updatePreview();