how to increase the resolution of a tableview rendered into a pixmp ?

sachinrd

Hey Everyone,
I am using the following snippet to save a tableview to a png image. how do i increase the resolution of the image ?

QPixmap pixIndexPage(tableView->size().width(), tableView->size().height());
QFile file("path/index.png");
file..open(QIODevice::WriteOnly);
pixIndexPage.save(&file, "PNG");

mrjj

Hi
Make the pixmap bigger, then it will have a higher resolution.
You also have to call resize on the table view to make it use the new size.
If the table view is in a layout this is not so easy as we cant resize it then.

Can I ask what the issue is ? you render the GUI to pixmaps and they are blurry when you print them or
why you need higher res ?

SGaist

Hi,

AFAIR, the rendering resolution of a widget is tied to its size.

What kind of high resolution do you have in mind ?

ChrisW67

Maybe I missed something. Nothing in the code snippet puts anything in the pixmap, it just makes an uninitialized one of the same pixel size as the tableView widget.

mrjj

@ChrisW67
Missed nothing :)
there is no grab() or render() shown.
but I assumed that poster would not be asking about raising the resolution unless
there was actually something on the picture, so to speak.

sachinrd

Thanks for your help guys. was able to increase the resolution by increasing the size of the pixmap.