Unsolved QT equivalent of CGradient and CGradientCtrl
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So sorry I forgot to post the URL, so of course you won't know what it does:
https://www.codeproject.com/articles/2196/cgradient-and-cgradientctrl
D.
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@Perdrix
So its a control that allows the user to kinda edit the gradient, moving the PEGS around ?
Like the build-in editor ?It seems to use palettes, is that important to you ?
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Well not much like that editor, but sort of in concept at least. But it does more than that - when the use moves the pegs the application can be told that changes have been made. So if I wish to move the "grey" point in a gamma slider for the default position of sqrt(0.5) , I can do so and the application get to know the new position etc.. Or I can change the "black point" and be told that has changed as well.
Palettes, yes but that's a Windows CPalette which isn't very much like a QPalette ...
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@Perdrix
Hi
Hmm I have not seen such Widget im afraid. ( also did a google search but its all types of other sliders)So it must allow color change and have movable PEGS that send a signal when moved.
Can user also add/remove pegs ?You could reuse the editor for the PEGS part
https://code.woboq.org/qt5/qttools/src/shared/qtgradienteditor/
or try to port that class CGradientCtrl to Qt. I could not watch the code so not sure how much
it would take. You can reuse its structures but anything mouse related and colors would have to be changed. -
Yes, User can add pegs as needed by double click - it's a pretty clever control. I looked at the Gradient control editor and it's not IMHO in the same league. You might be able to convert the MFC code to Qt, not sure I could!
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Hi
Update.
I found this
https://github.com/ctin/MultiSlider
That can have multiple handles. (as many as you like) Maybe this can be tweaked to do what you want ?
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Hi,
Do you mean something like shown in this cgradient demo project ?
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@SGaist
Yep, exactly that one. He links to it higher up. -
@mrjj said in QT equivalent of CGradient and CGradientCtrl:
@SGaist
Yep, exactly that one. He links to it higher up.Sorry, I missed the link.
The multi slider you found looks like a good start.
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@SGaist
At least he would get the "PEGS" adding and movement for free.
So yeah, it could be, i hope.