QTableView: Fix drawing grid for spanned cells

QTableView draws its gridlines at width/height of the cells. This
means that there is no gridline at x=0 and/or y=0. This is fine when
there is a header. But when the header is invisible, an additional
line at 0 must be drawn to have a boundary to the neighbor widget.
When a span is drawn, the clip rect has to be adjusted in this case
because x/y=0 belongs to the cell (and therefore would be clipped
out).
Also fix the drawing of the grid lines in RTL mode and with
ScrollPerPixel.

Task-number: QTBUG-22972
Change-Id: I1829770e3d5bf65421b590f7bb7354cbf222e3fb
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>

0 files changed, 0 insertions, 0 deletions