[Gambas-user] Request: TableView cell offset

[Benoit Minisini]

On Wednesday 11 February 2004 19:16, ron wrote:
> Hallo Benoit,
>
> I was so nice to try it myself.

well done man :-)

>
> Is is functional but I miss the way how to get the documentation also in
> the helpbrowser. Do I have it done the right way for Benoit rulez?

When you recompile a component, you must exec "gbi -a" in a shell to update 
the component *.info files. the help browser use these files to fill its 
treeview.

>   int = TableView.RowAt( ypos as integer)
>   int = TableView.ColumnAt( xpos as integer)
>
> xpos and ypos are the position from mouse.x and mouse.y at the MouseDown
> event and gives me the excact row and column numbers now before the
> MouseClick updates to .Row and .Column values.
> The returning values are -1 if the MouseDown is outside the cell grid.
> Row and Column headers or the blank space.
>
> The GamC instead of GamBas it beautifull to use!

Thanks.

>
> BTW
> In the code I found after all this part of code
> BEGIN_PROPERTY(CTABLEITEM_y)
>   GB.ReturnInteger(WIDGET->rowPos(THIS->row) - WIDGET->contentsY() +
> WIDGET->clipper()->y());
> END_PROPERTY
> Here it is just done the oposit way
> When this function didn't substract contentsY and add clipper()->y()
> it was posible to iterate the way i did in my example.

This function returns the pos of an item in tableview coordinates.

rowPos() returns the pos in contents coordinates. So I must substract 
contentsY() to go viewport coordinates, and then add clipper()->y() to go to 
TableView coordinates.

It is hard for me to explain that in english. Read the QScrollView 
documentation in the QT doc to get more explanations.

>
> Greeting from happy,
> Ron
>
> ---------------------------------------------------------------------------
>----------- Code I made is as follows, above the
>   BEGIN_METHOD(CTABLEVIEW_move_to, GB_INTEGER row; GB_INTEGER col)
> I add the commented code to show where i find the info.
>
> /* add ron begin */
> // ypos is position in whole tableview area
> BEGIN_METHOD(CTABLEVIEW_rowat, GB_INTEGER ypos)
> 	int ypos = VARG(ypos);
> 	// add offset frame
> 	// coming from 'Q_EXPORT QScrollview Q_PROPERTY' in qscrollview.h
> 	ypos = ypos + WIDGET->contentsY();
> 	// must sub horizontal header height
> 	if (!WIDGET->horizontalHeader()->isHidden())
> 		ypos = ypos - WIDGET->horizontalHeader()->height();
> 	// comming from 'QM_EXPORT_TABLE QTable public virtual' in qtable.h
> 	int row  = WIDGET->rowAt(ypos);
> 	GB.ReturnInteger(row);
> END_PROPERTY
>
> // xpos is position in whole tableview area
> BEGIN_METHOD(CTABLEVIEW_columnat, GB_INTEGER xpos)
> 	int xpos = VARG(xpos);
> 	// add offset frame
> 	// coming from 'Q_EXPORT QScrollview Q_PROPERTY' in qscrollview.h
> 	xpos = xpos + WIDGET->contentsX();
> 	// must sub vertical header width
> 	if (!WIDGET->verticalHeader()->isHidden())
> 		xpos = xpos - WIDGET->verticalHeader()->width();
> 	// comming from 'QM_EXPORT_TABLE QTable public virtual' in qtable.h
> 	int	col = WIDGET->columnAt(xpos);
> 	GB.ReturnInteger(col);
> END_PROPERTY

Maybe there is a problem, because I'm not sure that header width() and 
height() are valid when the TableView is not yet shown. And so these methods 
will return incorrect values in a _new() or Form_Open() method.

This a problem with many QT complex widgets, whose layout is deferred the 
later as possible.

This is a reason I didn't used these methods in CTABLEITEM_X/Y

> /* add ron end */
>
> in 'GB_DESC CTableViewDesc[] =' i add  following
>
>   GB_PROPERTY("Column", "i", CTABLEVIEW_column),
>
> /* add ron begin */
>   GB_METHOD("RowAt","i",CTABLEVIEW_rowat,"(Y)i"),
>   GB_METHOD("ColumnAt","i",CTABLEVIEW_columnat,"(X)i"),
> /* add ron end */
>
>   GB_METHOD("MoveTo", NULL, CTABLEVIEW_move_to, "(Row)i(Column)i"),
>
>
>

I will insert your functions in the next version. But tell me if they work 
during a _new() method.

Regards,

-- 
Benoit Minisini
mailto:gambas at ...1...