From: Eli Zaretskii <eliz@gnu.org>
To: Keith David Bershatsky <esq@lawlist.com>
Cc: emacs-devel@gnu.org
Subject: Re: Drawing dirty rectangles with expose_window: row->clip = fr
Date: Tue, 02 Apr 2019 17:48:11 +0300 [thread overview]
Message-ID: <83wokcfopg.fsf@gnu.org> (raw)
In-Reply-To: <m2h8bhqifx.wl%esq@lawlist.com> (message from Keith David Bershatsky on Mon, 01 Apr 2019 18:55:46 -0700)
> Date: Mon, 01 Apr 2019 18:55:46 -0700
> From: Keith David Bershatsky <esq@lawlist.com>
>
> Even though ns_clip_to_rect returns TRUE, "row->clip = fr;" in expose_window can sometimes prevent glyphs from being drawn within the rectangle that is passed as an argument of ns_clip_to_rect. This has the effect of permitting fake cursors to be drawn, but then glyphs cannot be drawn on top of hollow/box fake cursors.
>
> How can I reconcile a false_positive with ns_clip_to_rect?
Is the fake cursor entirely inside the rectangle described by 'fr', or
is it or some of its parts outside?
> Or, perhaps "row->clip = fr;" in expose_window needs to be adjusted to permit the drawing of glyphs?
It already is, AFAIU. Barring bugs, that is.
next prev parent reply other threads:[~2019-04-02 14:48 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-02 1:55 Drawing dirty rectangles with expose_window: row->clip = fr Keith David Bershatsky
2019-04-02 14:48 ` Eli Zaretskii [this message]
2019-04-02 19:34 ` Alan Third
-- strict thread matches above, loose matches on Subject: below --
2019-04-02 16:27 Keith David Bershatsky
2019-04-02 16:51 ` Eli Zaretskii
2019-04-02 17:42 Keith David Bershatsky
2019-04-02 20:42 Keith David Bershatsky
2019-04-03 19:28 Keith David Bershatsky
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