On Jan 7, 2013, at 2:10 AM, Martin Hewitson <matin.hewit...@aei.mpg.de> wrote:
> I've also checked that -setNeedsDisplay: is not being called on the PDFView.
Could it be that setNeedsDisplay: isn't called but setNeedsDisplayInRect: is?
On Jan 7, 2013, at 2:48 AM, Martin Hewitson <martin.hewit...@aei.mpg.de> wrote:
> Actually, at the risk of having a conversation with myself, I've narrowed the
> issue down to the actions I'm taking within my override of -drawPage:.
> Essentially what I'm aiming at is having a focus ring on the PDFView. I do
> this in my PDFView subclass:
>
> - (void)drawPage:(PDFPage *)page {
> [super drawPage:page];
> // focussed?
> if ([[self window] firstResponder] == self && [NSApp isActive]) {
> [[self superview] lockFocus];
> NSRect fr = [self frame];
> NSSetFocusRingStyle(NSFocusRingOnly);
> [[NSBezierPath bezierPathWithRect:fr] fill];
> [[self superview] unlockFocus];
> }
> }
I'm not hugely familiar with PDFKit, so this may be a naive question, and it
definitely delves into wild speculation...
Why do you override drawPage: rather than drawRect:? I wonder if drawPage: is
being called on multiple instances of PDFPage. Maybe (and here's the wild
speculation) something about selecting text in the PDFView causes lots of
PDFPage instances to be created, which would explain why you don't see the many
calls to drawPage: until then.
What do you see if you add NSLog(@"%@", page) to your drawPage: method? Is it
the same PDFPage every time?
> - (BOOL)becomeFirstResponder {
> [self setKeyboardFocusRingNeedsDisplayInRect:[self bounds]];
> return [super becomeFirstResponder];
> }
>
> - (BOOL)resignFirstResponder {
> [self setKeyboardFocusRingNeedsDisplayInRect:[self bounds]];
> return [super resignFirstResponder];
> }
Not sure if this relates to your problem, but it seems to me you should test
the results of super first. For example:
- (BOOL)becomeFirstResponder {
BOOL didBecome = [super becomeFirstResponder];
if (didBecome) {
[self setKeyboardFocusRingNeedsDisplayInRect:[self bounds]];
}
return didBecome;
}
And similarly for resignFirstResponder.
Also, I would be curious how often these get called -- I don't suppose they're
getting called with every key you type into the text view? It does seem weird
that drawPage: is getting called when you aren't even interacting with the
PDFView. I don't suppose your text view has a delegate that is doing something
that might affect the PDFView?
--Andy
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