Still NSTextView custom insertion point
Still NSTextView custom insertion point
- Subject: Still NSTextView custom insertion point
- From: "Thierry Passeron" <email@hidden>
- Date: Sun, 19 Mar 2006 01:46:26 +0100
Dear fellow cocoa developers,
I'm still stuck with this problem of making a custom insertion point
in an NSTextView. Of course I can set the TextView to not display any
insertion point and then implement a timer that will do the job. But
I'm willing to understand why I can't do it the usual way like this:
@interface CommandTextView : NSTextView {
}
@end
@implementation CommandTextView
- (void)drawInsertionPointInRect:(NSRect)rect color:(NSColor *)color
turnedOn:(BOOL)flag
{
NSRect rectDumb=NSMakeRect(5,5,10,10);
if( flag==YES )
{
[self lockFocus];
[color set];
NSRectFill(rectDumb);
[self unlockFocus];
return;
}
[self lockFocus];
[self setNeedsDisplayInRect:rectDumb avoidAdditionalLayout:NO];
[self unlockFocus];
}
- (void) updateInsertionPointStateAndRestartTimer: (BOOL)restartFlag {
NSLog(@"update: flag=%d",restartFlag);
[super updateInsertionPointStateAndRestartTimer:restartFlag];
}
@end
It works fine when you don't type any text, but, when you type some
text in the textview, the I-beam insertion point comes back from
nowhere ... I can't find where it comes from.
If you comment the [super updateInsertionPoint....] there won't be any
insertion point at all in the view. So I'm guessing this method is
mandatory. But what it does is a mistery to me.
Any of you have successfuly created a custom insertion point in an
NSTextView ? What do I need to do ?
Thanks in advance,
Best regards,
Thierry
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