Recently I was tasked to come up with an architecture for remote real time instantiation and updating of arbitrary QML components. This entry shows how you can use a simple variation of the factory method pattern in QML for instantiating arbitrary components. I’ve split my findings into 3 blog entries, each one covering a slightly […]
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Embedding the Servo Web Engine in Qt Using CXX-Qt to integrate a web rendering engine written in Rust
With the Qt WebEngine module, Qt makes it possible to embed a webview component inside an otherwise native application. Under the hood, Qt WebEngine uses the Chromium browser engine, currently the de facto standard engine for such use cases. While the task of writing a brand new standard-compliant browser engine is infamous as being almost […]
Streamlining Strategies for Embedded Software Development
Developing embedded software is notoriously difficult – how can we simplify the process? Fortunately, there are lots of techniques you can use daily to help streamline your development. Embracing Automation The specialized nature of embedded systems extends the ramp-up time for developers and necessitates a higher level of expertise. Automating hardware-specific tasks, such as deploying […]
Introducing the ConnectionEvaluator in KDBindings Control When Connections are Emitted
Managing the timing and context of signals and slots in multithreaded applications, especially those with a GUI, can be a complex task. The concept of deferred connection evaluation offers a nice and easy API, allowing for controlled and efficient signal-slot connections. This approach is particularly useful when dealing with worker threads and GUI threads. A […]
Streamlining Multi-platform Development and Testing
In today’s pervasively digital landscape, building software for a single platform is a 1990s approach. Modern applications, even those designed for specific embedded targets, must be adaptable enough to run seamlessly across various platforms without sacrificing efficiency or reliability. This is often easier said than done. Here are some key points to consider when developing […]
Reducing Visual Studio Installations with Toolchains
If you work on C++ projects on Windows that need to be built with multiple Visual Studio C++ compiler versions, you need some way to manage the installations of all these build environments. Either you have multiple IDEs installed, or you know about build tools (https://aka.ms/vs/17/release/vs_BuildTools.exe) and maybe keep only the latest full VS IDE […]
Introducing: KDSPDSetup Initialize loggers with simple config files and focus on your code's functionality
KDAB’s newest open-source library is now publicly available: KDSPDSetup! KDSPDSetup is a small library written in modern C++ (≥ 20) that initializes objects from the spdlog library by reading a toml configuration file. This makes setting up loggers more convenient and results in cleaner-looking code. Let’s take a look at an example to see how […]
Punctuality Matters: Using Linux to Manage Time-Critical Situations
The robustness of Linux is widely acknowledged, but it can’t quite match the microsecond management of a real-time operating system (RTOS) for time critical situations such as CNC machine instructions, vehicular control, or health sensor collection. If your software must record, manage, or control events within a narrow and precise time window and you’re invested […]
Incredibly Simple QR Generation in QML Wrapping tiny JS libraries in QML to do quick and simple things effortlessly and elegantly.
The Need for Simple & Modular QR Generation in QML Recently, our designer Nuno Pinheiro needed to generate QR codes for an Android app in QML and started asking around about a simple way to do this. The best existing QML solution was QZXing, a Qt/QML wrapper for the 1D/2D barcode image processing library ZXing. […]
Optimizing Embedded Product Design The Case for Off-the-shelf Boards
Choosing the right system-on-chip (SoC) is probably your first consideration when designing an embedded product, followed closely by deciding whether to use an off-the-shelf board or design your own. The case for commercial boards in initial designs For the first product in a new line, consider using a commercially available board that features your chosen […]