QTableView with a column of images

[Santosh Reddy]

try returning pixmap, an also make sure that image is available in the path

[elanari]

I also tried returning a pixmap with no result. But maybe it is not an issue with the pixmap. I just tried to return a color

return QtCore.QVariant(QtGui.QBrush(QtGui.QColor(QtCore.Qt.red)))

return QtCore.QVariant(QtGui.QBrush(QtGui.QColor(QtCore.Qt.red)))

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And it didn't change the color of the cells. However it prints something if I do

print "test"

print "test"

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in the condition block.

Any idea ?

[Santosh Reddy]

You should be supplying the images / pixmap / color from the view's model, and not from the delegate

[Rachol]

Have you tried Qt::BackgroundRole instead of Qt:ecorationRole?

[elanari]

@Rachol : Indeed it makes sense that it did not work with the color ! It works fine with the backgroundRole for the color, so it is a probleme with the pixmap.

@Santosh : I'm supplying it from my model, I don't have a custom delegate

[Santosh Reddy]

post you undated code which returns pixmap..

[Rachol]

For BackgroundRole you must always return QBrush. You can use void QBrush::setTexture ( const QPixmap & pixmap ) to set the image use to draw your background. But then it must be a correct size, so it is not drawn couple of times.

The only reasonable solution would be to subclass QStyledItemDelagate (not QItemDelegate) and reimplement paint method. If you have painted a QWidget before, this should be very straight forward.

Use setItemDelegateForColumn method to set a delegate on your TableView

[elanari]

I'm trying something with a delegate but so far I got nothing, maybe you can help me to get this straight.
I created a custom delegate inheriting QStyledItemDelegate :

class ImageDelegate(QtGui.QStyledItemDelegate):
 
    def __init__(self, parent):
        QtGui.QStyledItemDelegate.__init__(self, parent)
 
    def paint(self, painter, option, index):		
        # Get Item Data
 
        path = "path\to\my\image.jpg"
 
        style = QtGui.QApplication.style()
        opt = QtGui.QStyleOptionGraphicsItem()
        opt.rect = option.rect
        pixmap = QtGui.QPixmap(path)
 
        painter.drawPixmap(opt.rect, pixmap)

class ImageDelegate(QtGui.QStyledItemDelegate):

    def __init__(self, parent):
        QtGui.QStyledItemDelegate.__init__(self, parent)
        
    def paint(self, painter, option, index):		
        # Get Item Data
        
        path = "path\to\my\image.jpg"
        
        style = QtGui.QApplication.style()
        opt = QtGui.QStyleOptionGraphicsItem()
        opt.rect = option.rect
        pixmap = QtGui.QPixmap(path)
        
        painter.drawPixmap(opt.rect, pixmap)

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And I call it like this :

self.delegateImage = ImageDelegate(self)
self.setItemDelegateForColumn(2, self.delegateImage)

self.delegateImage = ImageDelegate(self)
self.setItemDelegateForColumn(2, self.delegateImage)

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And I am sure the path is correct

What am I missing ?

[Rachol]

Okay, I am not a specialist on python, couldn't even call myself a beginner. However I think you don't need this:

style = QtGui.QApplication.style()
        opt = QtGui.QStyleOptionGraphicsItem()
        opt.rect = option.rect

style = QtGui.QApplication.style()
        opt = QtGui.QStyleOptionGraphicsItem()
        opt.rect = option.rect

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Just use option.rect directly.

Appart from that there is nothing I could say is wrong or unnecessary. Have you tried to fill option.rect with some color?

[elanari]

Filling the cells with a color works fine :

painter.fillRect(option.rect, QtGui.QColor(191,222,185))

painter.fillRect(option.rect, QtGui.QColor(191,222,185))

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But still no changes with the pixmap

[Rachol]

The there are only 2 things can go wrong:

1. Your pixmap is not loaded(wrong path)
2. Your pixmap is not scalled to the size of the area you are drawing into.