RepaintArea

RepaintArea is a performance helper for Qt Quick's software backend, which repaints only what changed. A table row whose figures change dirties one rectangle per label, and the renderer then carries a region of hundreds of slivers through every node of the window. Laid over a row and given the row's values, RepaintArea turns that into one rectangle per row (and rows next to each other into one). It draws nothing, and on the GPU backends it has no node at all.

RepaintArea is a Qt Quick Item (Qt documentation); its inherited properties work as usual. Most apps get it through DataTable and don't use it directly.

Example

Row {
    // ... the labels showing the figures
    RepaintArea {
        anchors.fill: parent
        content: [model.name, model.cpu, model.memory]
    }
}

Properties