Displaying a picture with PictureWidget

This widget will be called to display a picture at its full size. We also add some buttons to go to the previous/next picture or delete the current one.

Let's start to analyze the PictureWidget.ui form, here is the design view:

Here are the details:

• backButton: This object requests to display the gallery

• deleteButton: This object removes the picture from the album

• nameLabel: This object displays the picture name

• nextButton: This object selects the next picture in the album

• previousButton: This object selects the previous picture in the album

• pictureLabel: This object displays the picture

We can now take a look at the header PictureWidget.h:

#include <QWidget> 
#include <QItemSelection> 
 
namespace Ui { 
class PictureWidget; 
} 
 
class PictureModel; 
class QItemSelectionModel; 
class ThumbnailProxyModel; 
 
class PictureWidget : public QWidget 
{ 
    Q_OBJECT 
 
public: 
    explicit PictureWidget(QWidget *parent = 0); 
    ~PictureWidget(); 
...