What's New in Qt 4.6

Animation Framework

The animation framework helps build highly animated, high-performance GUIs without the hassle of managing complex structures, timers, and easing curves, not to mention the large state graphs that all animated GUIs tend to be full of.

The framework makes it easy to animate QObjects, including QWidgets, by allowing Qt properties to be animated. It also allows creating custom animations and interpolation functions. Graphics views are not left out; one can animate QGraphicsWidgets and new QGraphicsObjects which inherit from QGraphicsItem (and thereby enable properties).

Animations are controlled using easing curves and can be grouped together. This enables animations of arbitrary complexity.

The API is easy to grasp with functions such as start(), stop(), pause(), and currentTime(). Here is an image from one of the examples that come with the framework:

The animation framework also plugs into the new Qt Statemachine by allowing an animation to be played when transitions are triggered. The state machine framework is introduced in 4.6 and is described below.

See The Animation Framework documentation for more information.

     QWebElement document = frame->documentElement();
     /* Assume the document has the following structure:

        <p class=intro>
          <span>Intro</span>
          <span>Snippets</span>
        </p>
        <p>
          <span>Content</span>
          <span>Here</span>
        </p>
     */

     QWebElementCollection allSpans = document.findAll("span");
     QWebElementCollection introSpans = document.findAll("p.intro span");