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From: martin rudalics <rudalics@gmx.at>
To: Robert Pluim <rpluim@gmail.com>, Eli Zaretskii <eliz@gnu.org>
Cc: Mike Kupfer <mkupfer@alum.berkeley.edu>,
	32002@debbugs.gnu.org, npostavs@gmail.com, kurn@sfu.ca
Subject: bug#32002: 24.4; Scroll bar start, end not correct
Date: Fri, 06 Jul 2018 14:56:10 +0200	[thread overview]
Message-ID: <5B3F66EA.5040203@gmx.at> (raw)
In-Reply-To: <87d0w0ac4b.fsf@gmail.com>

 >>> gdb says that Emacs is getting jump events, not step events.
 >>>
 >>>    Thread 1 "emacs" hit Breakpoint 1, xg_scroll_callback (range=0x2f58740,
 >>>        scroll=GTK_SCROLL_JUMP, value=5637316.2000000002,
 >>>        user_data=0x1493c30 <bss_sbrk_buffer+8990864>) at xterm.c:5644
 >>
 >> Thanks.  I guess the issue now moves to GTK-land: why do we get jump
 >> events when you click on the steppers?  Maybe someone who knows GTK
 >> can answer that.
 >
 > It looks like GTK sends GTK_SCROLL_JUMP everytime the position of the
 > scrollbar thumb is changed, regardless of how you change it. I think
 > it can *also* send events when you click the stepper, but I suspect
 > you then get two events, with no easy way to distinguish them. Iʼd
 > test, but my theme doesnʼt have steppers.

Here I'm called back with exactly one GTK_SCROLL_STEP notification as

#0  xg_scroll_callback (range=0x183a3b0, scroll=GTK_SCROLL_STEP_FORWARD, value=244073, user_data=0x15410a0) at ../../src/xterm.c:5673

Otherwise, IIUC nothing would happen since GTK_SCROLL_JUMP expects
that the mouse has been grabbed in order to send a scroll_bar_event.
But maybe I'm misreading the code.

martin






  reply	other threads:[~2018-07-06 12:56 UTC|newest]

Thread overview: 73+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-29  7:36 bug#32002: 24.4; Scroll bar start, end not correct Andrew Kurn
2018-06-29  8:53 ` Eli Zaretskii
     [not found]   ` <20180629162402.GA21197@sfu.ca>
2018-06-29 17:24     ` Eli Zaretskii
2018-07-01  1:30       ` Andrew Kurn
2018-07-02 18:16         ` Glenn Morris
2018-07-02 18:20           ` Glenn Morris
2018-07-03 12:58           ` Andrew Kurn
2018-07-04  2:00             ` Noam Postavsky
2018-07-04  3:45               ` Andrew Kurn
2018-07-04  4:59                 ` Eli Zaretskii
2018-07-04  5:13                 ` Mike Kupfer
2018-07-04  5:34                   ` Eli Zaretskii
2018-07-04 16:32                     ` Mike Kupfer
2018-07-04 23:36                       ` Mike Kupfer
2018-07-04 23:44                         ` Noam Postavsky
2018-07-04 23:56                           ` Mike Kupfer
2018-07-05  2:36                             ` Eli Zaretskii
2018-07-05  5:28                               ` Mike Kupfer
2018-07-05  6:27                                 ` Eli Zaretskii
2018-07-05 15:05                                   ` Mike Kupfer
2018-07-06  3:58                                     ` Mike Kupfer
2018-07-06  6:10                                       ` Eli Zaretskii
2018-07-06 10:32                                         ` Robert Pluim
2018-07-06 12:56                                           ` martin rudalics [this message]
2018-07-06 13:31                                             ` Eli Zaretskii
2018-07-07  7:15                                               ` martin rudalics
2018-07-07  7:35                                                 ` Eli Zaretskii
2018-07-07  7:47                                                   ` martin rudalics
2018-07-07 15:19                                                     ` Mike Kupfer
2018-07-07 15:59                                                       ` Eli Zaretskii
2018-07-07 23:05                                                         ` Mike Kupfer
2018-07-08  3:00                                                           ` Mike Kupfer
2018-07-07 16:00                                                       ` Mike Kupfer
2018-07-08  8:11                                                       ` martin rudalics
2018-07-09  1:42                                                         ` Mike Kupfer
2018-07-09  2:53                                                           ` Mike Kupfer
2018-07-09  8:34                                                             ` martin rudalics
2018-07-09  8:34                                                           ` martin rudalics
2018-07-09 14:39                                                             ` Mike Kupfer
2018-07-10  7:30                                                               ` martin rudalics
2018-07-14  4:31                                                                 ` Mike Kupfer
2018-07-14  8:00                                                                   ` martin rudalics
2018-07-21  0:28                                                                     ` Mike Kupfer
2018-07-21  7:44                                                                       ` martin rudalics
2018-07-14  4:13                                                             ` Mike Kupfer
2018-07-06 15:02                                           ` Mike Kupfer
2018-07-06 16:02                                             ` Robert Pluim
2018-07-07  7:17                                             ` martin rudalics
2018-07-04  7:49                   ` Andrew Kurn
2018-07-04  9:30                     ` Stephen Berman
2018-07-04 12:10                     ` Noam Postavsky
2018-07-04 16:34                     ` Mike Kupfer
2018-07-10 19:16 ` Andrew Kurn
2018-07-11  3:02   ` Eli Zaretskii
2018-07-12  7:11     ` Andrew Kurn
2018-07-12 13:29       ` Eli Zaretskii
2018-07-12 15:57         ` Stephen Berman
2018-07-12 16:35           ` Eli Zaretskii
2018-07-14  4:56         ` Mike Kupfer
2018-07-14  6:49           ` Eli Zaretskii
2018-07-14  8:01             ` martin rudalics
2018-07-21 13:50               ` Eli Zaretskii
2018-07-22  7:25                 ` martin rudalics
2018-07-22 14:55                   ` Eli Zaretskii
2018-07-23  6:51                     ` martin rudalics
2018-07-27  8:30                   ` Eli Zaretskii
2018-07-27  9:23                     ` martin rudalics
2018-07-27 11:03                       ` Andrew Kurn
2018-07-27 12:27                         ` Eli Zaretskii
2018-07-28  7:22                           ` martin rudalics
2018-07-29  2:51                             ` Mike Kupfer
2018-07-16  1:47             ` Mike Kupfer
2018-07-21 13:53               ` Eli Zaretskii

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