gistfile1.m

- (GMGridViewCell *)GMGridView:(GMGridView *)gridView cellForItemAtIndex:(NSInteger)index {
    CGSize size = [self sizeForItemsInGMGridView:gridView];
    
    GMGridViewCell *cell = [gridView dequeueReusableCell];

    if (!cell) {
        cell = [[GMGridViewCell alloc] initWithFrame:CGRectMake(0, 0, size.width, size.height)];
    }

    Piece *piece = [self.project.pieces objectAtIndex:index];
    PieceView *pieceView = [[PieceView alloc] initWithFrame:CGRectMake(0, 0, size.width, size.height) piece:piece];
    pieceView.captionVisible = self.showCaption;
    
    cell.contentView = pieceView;
    return cell;
}