Since our entire build environment resides inside a Docker container, you don't need to install any packages on the host system. Everything is confined to the Docker image. Do however note that as of this writing, the multi-platform support is still in beta so, you need to enable this. Instructions for how to get started with multi-platform builds can be found here.

$ cd webview
$ docker build -t qt-builder .

You should now be able to invoke a run executing the following command:

$ docker run --rm -t \
    -v ~/tmp/qt-src:/src \
    -v ~/tmp/qt-build:/build \
    qt-builder

This will launch build-qt.sh and start the process of building QT for all Raspberry Pi boards. The resulting files will be placed in ~/tmp/qt-build/.

Usage

DBus is used for communication. Webview registers screenly.webview object at /Screenly address on the session bus.

Webview provides 2 methods:loadPage and loadImage.

Example of interaction (python):

from pydbus import SessionBus

bus = SessionBus()
browser_bus = bus.get('screenly.webview', '/Screenly')

browser_bus.loadPage("www.example.com")

Supported protocols: http://, https://

Debugging

You can enable QT debugging by using the following:

export QT_LOGGING_RULES=qt.qpa.*=true