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Higlight selection in NSOutlineView

Categories > Cocoa

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zephyroth

rookie - member

2 posts

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Hi everybody,

I want to highlight selected rows with a tranparent image instead of colors.

Here's the code:

- (void)highlightSelectionInClipRect:(NSRect)theClipRect
{
    NSRange            aVisibleRowIndexes = [self rowsInRect:theClipRect];
    NSIndexSet *    aSelectedRowIndexes = [self selectedRowIndexes];
    int                aRow = aVisibleRowIndexes.location;
    int                anEndRow = aRow + aVisibleRowIndexes.length;

    for (aRow; aRow < anEndRow; aRow++)
    {
        if([aSelectedRowIndexes containsIndex:aRow])
        {
            NSRect aRowRect = NSInsetRect([self rectOfRow:aRow], 2, 1);

            NSImage *    anIcon = [NSImage imageNamed:@"HighligthSelection"];

            [anIcon setFlipped:YES];
            [anIcon setSize:aRowRect.size];

            [anIcon drawAtPoint:aRowRect.origin fromRect:aRowRect operation:NSCompositeSourceOver fraction:1.0];

        }
    }
}