Example Using QGraphicsView Class

[leinad]

Hi,

I'm trying to build a dynamic a * a matrix where in each cell I'd like to have a icon like a red dot. When the user clicks on the dot within a cell a popup window will come up providing certain information. The matrix essentially shows nodes of machines. When clicking on a cell, I get ping results which coincide with the machine that sends the ping and the one that gets it. So the rows shows machines which got pinged and the columns show machines that sent the ping. Are there any examples to show how to build a matrix table using QGraphicsView? I can work on the details myself but I'm not sure where to start. If someone can give me a starting point here, that would be great!

Thanks.

[Pl45m4]

@leinad said in Example Using QGraphicsView Class:

Are there any examples to show how to build a matrix table using QGraphicsView?

Why do you want to draw your matrix as QGraphicsItem?
What prevents you from using just a QTableView / QTableWidget with some custom item delegates in your rows or columns?

[leinad]

I thought of that, but the managers want me to use QGraphicsItem. It was originally done in Java where they drew the matrix so they want a similar design.

[JoeCFD]

@leinad it looks like your managers may not know much about Qt. It can be done in both qt widgets and QGraphicsView.
You can use QGraphicsSvgItem for cells.

[mrjj]

@leinad

hi
But do you need scrolling of the rows ?
While you can custom paint anything you like, its
harder to get scrolling working if its all painted.

[leinad]

I can have hundreds of cells since each cell represents a ping between machines and can have hundreds of machines, so probably will need scroll bars if the matrix is larger than the view.

[JoeCFD]

@leinad https://doc.qt.io/qt-5/qtwidgets-graphicsview-chip-example.html