Issues writing a simple image viewer class

[ultim8]

Ok,

I don't have read all, but why do you want to do all the nasty work with the size thing by your own? Let Qt do the dirty work for you!

Since - I have said this this day already in an other post - QPixmap is a QPaintDevice use it! What I mean is:

• store the given pixmap (gpm)
• paint the gpm with transformations on a new pixmap (npm) you create
• set this pixmap (npm) to the label

By doing so, you don't have to take care about all the layout stuff...
Lykurg

I've thought about that... but then I would have to store two copies of the image (one in my pixmap and one in the QLabel). Also I would have to copy the pixmap to the QLabel whenever I made a new transformation (I would imagine this would be an expensive operation if I were to animate my transformations).

By doing it in the method I'm attempting I don't have any of those issues. I store one pixmap... and I paint that one pixmap with the desired transformations onto the widget.

Instead of suggesting other options I would prefer some help with why my method is not working (unless people have suggestions that don't include QLabel )

[ultim8]

Turns out my issue was really trivial. When adding an image to a scroll area you need to call setWidgetResizable to true... otherwise the widget is never resized:

m_scrollArea->setWidgetResizable(true);

m_scrollArea->setWidgetResizable(true);

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It now displays the image correctly (mostly that is... there are still some minor issues to resolve, but I think I can work those out).