[Interest] QTableView - only trigger edit event in lower part of cell

[Tony Rietwyk]

Hi Frank,

You might have trouble with that on Mac - I found that the drop down 
happens even before the MousePress event is delivered.  I ended up 
having to install an event filter and trap it there.  But that was just 
floating combo boxes over an ordinary widget, not an ItemView / Delegate 
situation.

Regards, Tony


On 3/05/2018 7:39 AM, Frank Rueter | OHUfx wrote:
> I got things working now to open the editor only when the bottom part 
> of the cell is clicked but I cannot for the life of me figure out how 
> to close it when the user clicks away from the open combo box into the 
> upper part of the current cell.
> Attached is a simplified working example of where I'm at.
>
> Can somebody please help me figure out that last bit? Here are some 
> screen shots to clarify:
>
> The initial table:
>
>
> The table with the open editor after clicking into the bottom 20 
> pixels of a cell:
>
>
> The table after I click away from the editor but into the same cell, 
> in which case I'd like to close it and show the initial state as seen 
> above, but I just can't figure out how to.
>
>
>
> Cheers,
> frank
>
> On 2/05/18 10:58 AM, Frank Rueter | OHUfx wrote:
>> Ah, looks like my approach was correct but I had not turned off edit 
>> triggers properly, so those were interfering with the expected behaviour.
>>
>> On 1/05/18 8:21 PM, Frank Rueter | OHUfx wrote:
>>> Hi,
>>>
>>> I have spent several hours trying to get this right but seem to be 
>>> failing:
>>> I have a QTableView (which uses a QAbstractTableModel) and a custom 
>>> delegate which takes care of the cell painting.
>>> At the bottom of each cell I need a combo box which I want editable 
>>> by a single click, so no clicking to select or focus the cell first. 
>>> Here is the current state of a cell:
>>>
>>> I tried this via the view's mousePressEvent, comparing 
>>> self.visualRect(index) to the cursor position (after mapping both to 
>>> the global coordinate system. But I can't get that right.
>>>
>>> Another attempt was to do it via the delegate's createEditor() 
>>> method and just return None if the cursor isn't in the required area.
>>> That seemed to be more promising, but I didn't know how to close the 
>>> editor again when the user clicks into the upper part of the cell.
>>>
>>> I want to avoid persistent editors for performance reasons.
>>>
>>> Does anybody have any tips how to best tackle this? It feels like it 
>>> shouldn't be too hard and I have stared at it too long now to see 
>>> any obvious solutions, so any help would be great.
>>>
>>> Cheers,
>>> frank
>>>
>>>
>>>
>>>
>>>
>>>
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