draw qt widget bigger as the mouse hovers over it (overlapping of widgets)

1
votes

I would like to create a simple effect with my qt gui, but i have no idea how to achieve this.

I have several widgets, that i implemented as subclasses of qwidget. These are part of another widget and live in a layout. When the mouse hovers over these widgets, i want them to appear bigger to highlight the selected one.

This is what i already tried: Override the paint event, and simply paint it bigger. But then, the other widgets that also live in the same layout overpaint the oversized areas.

I also tried to call the paint function "by hand" from the parent window, to get control over the painting order. But that didnt help either.

I think there has to be a possibility achieving this effect this qt, but i simply dont know how. Any ideas?

1
qtwidgethoveroverlapping
I don't think "painting it bigger" is a good idea, but did you try raise()ing the widget when you do that? – Mat
But i want to widget to really be bigger. Unfortunately raise() doesnt prevent the widget from being overpainted by the other widgets. If this helps: i want to have a similar effect to the auto hiding parts, like the solution explorer, of visual studio for example. – Valerie
Then make it bigger with resize(), but that's probably going to mess up your layout. You might manage to make it work with spacers. I don't know, and I don't like stuff moving under the mouse. Changing colors/highlighting is ok though. – Mat
You are right, but my input device is not the mouse. I use the hand positions from the kinect skeleton tracking. And if i design control elements, that are big enough to fit the hands on the screen, my screen will be complete full with control elements. Thats why i want to scale them when the hand hovers over them. – Valerie

1 Answers

0
votes

You could either:

  • create your GUI inside a QGraphicsView, with QGraphicsWidgets and use setScale when the mouse enters or leave the widget, or
  • use QML.