Partially transparent image
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Hi all,
I need an image to be partially transparent in Qt.Quick (i.e. just a quarter of a certain jpg/png image) and I'm looking through the documentation but can't really find anything useful. Is this at all possible in any way? Maybe some sort of 'void' Window or similar?
I need it for background image which should be transparent partially (let's say lower left corner - 2-dimensional cropping anyway) if a user goes to a certain menu, otherwise it should be normal without transparent parts. Of course I can crop it manually, but that really isn't very good for my application - different screen resolutions would require me to crop the images independently for each resolution and configuration, which really makes no sense to do.If someone knows, please share. Thanks in advance!
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Hi all,
I need an image to be partially transparent in Qt.Quick (i.e. just a quarter of a certain jpg/png image) and I'm looking through the documentation but can't really find anything useful. Is this at all possible in any way? Maybe some sort of 'void' Window or similar?
I need it for background image which should be transparent partially (let's say lower left corner - 2-dimensional cropping anyway) if a user goes to a certain menu, otherwise it should be normal without transparent parts. Of course I can crop it manually, but that really isn't very good for my application - different screen resolutions would require me to crop the images independently for each resolution and configuration, which really makes no sense to do.If someone knows, please share. Thanks in advance!
@jimmy274 Perhaps you should try OpacityMask from Graphical Effects.
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@jimmy274 Perhaps you should try OpacityMask from Graphical Effects.
@p3c0 Hey thanks, it wasn't a perfect fit, but you've pointed me in the right direction (Graphical Effects) - ThresholdMask is what I needed. It's also not a completely perfect fit, but then again, I'm still experimenting with it.
Either way, thanks big time, really cool pointer!
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@p3c0 Hey thanks, it wasn't a perfect fit, but you've pointed me in the right direction (Graphical Effects) - ThresholdMask is what I needed. It's also not a completely perfect fit, but then again, I'm still experimenting with it.
Either way, thanks big time, really cool pointer!
@jimmy274 You're Welcome :)
A more interesting way but through C++ would be to use QQuickPaintedItem to create your own custom item. You can re-implement paint method to draw your custom shapes, text etc.. It uses QPainter to achieve this. Try looking for setCompositionMode and setClipRegion methods. An example forQQuickPaintedItemis here.
