QTableView/QStyledItemDelegate: Mark an *entire* row hovered over with the mouse
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Hi,
Your solution doesn't sound bad, you might however simplify things by creating a copy of the options and update state with QStyle::State_MouseOver, you can then let the base implementation do the painting
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I need full control over the paint-function anyway, and I can't completely follow your thoughts. Are you talking about a fake MouseOver state I should trigger? The ItemDelegate only ever draws a single cell, as far as I know. And I wasn't able to manipulate the calling of that drawing, since it is done in non-reimplementable QTableView-functions.
The solution wasn't too good, by the way. I had to make some small adjustments to it. It's still roughly the same, though.
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No, I was thinking: just add the QStyle::State_MouseOver flag to the option.state flags when needed.
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Aren't you just painting a focus rectangle over the each item of the row ?
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Sorry, my bad, I've mixed hovered and selected. But since you are painting the hovered state like the selected, the technic I proposed earlier (using an updated copy of the option) is still usable, you would only need to add the QStyle::State_Selected and then call QAbstractItemDelegate::paint with this new option. It should handle the drawing for you properly
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But at which point am I supposed to set that option? "Copying" it would be meaningless inside the item delegates paint() function, since that one only draws a single cell, and I have to explicitly check for the hovered-state anyway.
If you are talking about manipulating the option before calling QStyledItemDelegate::paint() in my custom implementation, that's not possible. As I said: I completely rewrote that function, without any calls to the base class being made.
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Ok, it wasn't clear that all the painting was custom. Then no need for my idea.
I just thought about something that may be of interest, what about QRubberBand ?
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That sounds interesting indeed. I have never used a QRubberBand before - what would happen to the text in the tableview? Would it still be readable?
When doing this in the item delegate, I can paint the background of the text before writing the text, so the hover-marking is cleanly realized (but it still has some minor flaws). An overlayed widget might wash out the text.
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IIRC, the QRubberBand is translucent so you would only have to handle its size and position. You could do it directly in a custom view and wouldn't need your special delegate
