Ubuntu – How to lock ubuntu device orientation in portrait or landscape from user input

Add the following line to your APP-NAME.desktop file:

X-Ubuntu-Supported-Orientations=portrait

This is what I did to embed an image in the "binary":

I'm using a qmake project with the default folder structure in Ubuntu SDK. I made a directory to store my images: project_name/backend/your_click/images. With the backend folder I created a new resource file resource_file.qrc that contains the following:

<!DOCTYPE RCC><RCC version="1.0">
<qresource>
    <file>images/bigredbutton.png</file>
</qresource>
</RCC>

To create the qrc file I think you can right-click, Add New ..., Qt, Qt Resource File and manually edit the file, or manually create it from scratch. I don't remember which one worked for me, try them out and let me know, I will edit the answer for others that may run into the same problem in the future.

In my Main.qml file I use the image like this:

Image {
    id: btn
    width: 250; height: 250
    fillMode: Image.PreserveAspectFit
    source: "qrc:images/bigredbutton.png"
    MouseArea {
    ...
    }

Here's a screenshot of my project structure, it might help.