Fix thumbnail alignment in grid view for small icons
Previously, KFileItemDelegate ignored the displayAlignment option and hardcoded the drawing of the thumbnail to the top-left corner of the grid cell. This caused small previews to sit completely off-center.
This calculates the actual pixmap size and adds an X/Y offset to properly center the icon within the allocated decoration size.
Before:
-Image and video thumbnails are vertically aligned towards the top and horizontally pushed to the left.
After:
Now, image and video thumbnails are both horizontally and vertically center aligned in the file picker
Edited by John Doe