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New Features in Qt 5.5

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What is new in Qt 5.5

What is new in Qt 5.5 Potentially incomplete.

New Features

  • QPA
    • XCB plugin now uses the dbus based statusnotifier protocol for system tray and notifications.
    • KMS/DRM backend for EGLFS. This replaces the now deprecated KMS platform plugin. It allows running apps with eglfs on the console on systems with Mesa and devices that come with drm support.
    • EGLFS has a plugin-based backend mechanism in addition to the existing, statically compiled-in solution.
    • tslib is now better integrated with EGLFS and LinuxFB to provide support for resistive single-touch touchscreens often used in industrial environments.
    • xcb is refactored to move GLX and EGL support into plugins. No more ifdefs, allowing building both backends.
    • Added a TUIO Touch plugin for receiving remote touch events via UDP.
    • Added a libinput plugin.
  • Qt GUI
    • Windows packages are all built with -opengl dynamic. No OpenGL-only or ANGLE-only builds are provided anymore.
    • QImage: 8-bit Alphamap and grayscale formats.
  • Qt Quick
    • Windows now defaults to the threaded Qt Quick render loop when using desktop OpenGL (opengl32.dll).
    • QQuickRenderControl supports threaded rendering.
  • Qt Quick Controls
    • Qt Quick Extras (formerly Qt Quick Enterprise Controls) was added under the QtQuick.Extras import.
    • TreeView control for QAbstractItemModel-derived models. Supports QItemSelectionModel selection.
  • Qt QML
    • It is now possible to conveniently expose custom C++ value types into the JavaScript environment of Qml and QJSEngine.
  • Qt Multimedia
    • GStreamer 1.0 support. Note that the default is still 0.10. 1.0 support can be enabled by configuring Qt with '-gstreamer 1.0'.
    • New video filtering framework to integrate frameworks like OpenCV or compute APIs such as OpenCL or CUDA with VideoOutput elements.
    • New API to control camera viewfinder settings
    • Improved camera support on iOS (focus, zoom, exposure, viewfinder/image settings)
    • The QML MediaPlayer is now rendered in an OpenGL texture on iOS. This means VideoOutput supports advanced transformation, shader effects and doesn't have to be always on top of other items anymore.
  • Qt Bluetooth
    • Bluetooth Low Energy API final release (5.4 was featuring tech preview).
    • Bluetooth Low Energy Support for Android (requires Android v18+) added.
    • Bluetooth Classic and Low Energy support for iOS and OS X.
  • Qt Nfc
    • Neard based backend for Linux added.
  • Qt WebEngine
    • WebEngineProfile for control of storage and cache paths and related policies.
    • Added support for javascript Geolocation API with QtLocation as a backend
    • Added API for managing downloading of files
    • Added API for controlling cache and cookie paths and policy
  • Qt WebView
    • Added native implementations for Windows and Mac OS X

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