Resizing QGraphicsScene to fit entire contents of QGraphicsScene

[mgoldman]

Hi,

I have a program which parses through a .txt file containing photo pathnames and then adds them as QGraphicsPixmapItems to a QGraphicsScene. This works correctly but I am unable to get the QGraphicsView to resize to the size of the pixmap so that the whole image is visible.

To do this, I have created a class TrainingDataWindow which subclasses QMainWindow. The class contains a function selectImageSource() that correctly obtains the first pixmap from the .txt file and adds it to the QGraphicsScene. In this function, I have tried multiple ways of calling QGraphicsView::resize(....) in order to make the whole image visible. These methods include:

1.

view_image->resize(imgScene.itemsBoundingRect().width(),imgScene.itemsBoundingRect().height());

view_image->resize(imgScene.itemsBoundingRect().width(),imgScene.itemsBoundingRect().height());

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2.

QSize imgSize = img.size();   
view_image->resize(imgSize);

QSize imgSize = img.size();   
view_image->resize(imgSize);

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where view_image is of type QGraphicsView and img is of type QPixmap. Neither of these (or others) have done anything (literally).

Any ideas on how to fix this? If i do need to reimplement resizeEvent() for the TrainingDataWindow class how would this be affected since I designed the program with Qt Designer?

Thanks,
Max

[wysota]

QGraphicsView::fitInView()