The Photo Viewer app in the reference image is the same photo display demo provided in the Qt 5.3.1 distribution (Photo Surface).
This sample uses the standard Qt APIs to access photo files stored in a local folder and to display them.
To start the app, tap PhotoViewer on the Home screen. You will then see a set of small images providing previews of the available photos.
The previews are shown in rows of 5 thumbnail images. This release includes 10 sample photos. To display a photo full size (or as large as it can be scaled on the screen), tap its preview image. When a photo is displayed, you can swipe left or right to scroll through the set of photos. If you tap anywhere on the screen again, the app returns to the preview display.
Location on the reference image:
/apps/com.example.photoviewer.testRel_photoviewer775eb853