On 20 Oct, 2008, at 09:15, Nick Zitzmann wrote:
you do all your drawing in -drawRect:, and call -setNeedsDisplay: &
friends when you need to refresh part of the view.
Is this a good way of going about it? I subclassed NSView and defined
the properties border_colour, fill_colour, and pic. These are
initialised to nil. I then implemented drawRect: like this:
- (void)drawRect:(NSRect)rect {
if( border_colour )
{
[border_colour set];
[NSBezierPath strokeRect:[self bounds]];
}
if( fill_colour )
{
[fill_colour set];
[NSBezierPath fillRect:[self bounds]];
}
if( pic )
[pic drawInRect:[self bounds]
fromRect:NSZeroRect
operation:NSCompositeSourceOver
fraction:1.0];
}
Now the controller can change the content of the view by assigning
values to the properties.
But it still seems an awful lot has to be decided about the content of
the view when the subclassing is done. Or am I missing something
simple here?
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