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bug#32002: 24.4; Scroll bar start, end not correct
From: |
martin rudalics |
Subject: |
bug#32002: 24.4; Scroll bar start, end not correct |
Date: |
Fri, 06 Jul 2018 14:56:10 +0200 |
>>> 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
- bug#32002: 24.4; Scroll bar start, end not correct, (continued)
- bug#32002: 24.4; Scroll bar start, end not correct, Mike Kupfer, 2018/07/04
- bug#32002: 24.4; Scroll bar start, end not correct, Noam Postavsky, 2018/07/04
- bug#32002: 24.4; Scroll bar start, end not correct, Mike Kupfer, 2018/07/04
- bug#32002: 24.4; Scroll bar start, end not correct, Eli Zaretskii, 2018/07/04
- bug#32002: 24.4; Scroll bar start, end not correct, Mike Kupfer, 2018/07/05
- bug#32002: 24.4; Scroll bar start, end not correct, Eli Zaretskii, 2018/07/05
- bug#32002: 24.4; Scroll bar start, end not correct, Mike Kupfer, 2018/07/05
- bug#32002: 24.4; Scroll bar start, end not correct, Mike Kupfer, 2018/07/05
- bug#32002: 24.4; Scroll bar start, end not correct, Eli Zaretskii, 2018/07/06
- bug#32002: 24.4; Scroll bar start, end not correct, Robert Pluim, 2018/07/06
- bug#32002: 24.4; Scroll bar start, end not correct,
martin rudalics <=
- bug#32002: 24.4; Scroll bar start, end not correct, Eli Zaretskii, 2018/07/06
- bug#32002: 24.4; Scroll bar start, end not correct, martin rudalics, 2018/07/07
- bug#32002: 24.4; Scroll bar start, end not correct, Eli Zaretskii, 2018/07/07
- bug#32002: 24.4; Scroll bar start, end not correct, martin rudalics, 2018/07/07
- bug#32002: 24.4; Scroll bar start, end not correct, Mike Kupfer, 2018/07/07
- bug#32002: 24.4; Scroll bar start, end not correct, Eli Zaretskii, 2018/07/07
- bug#32002: 24.4; Scroll bar start, end not correct, Mike Kupfer, 2018/07/07
- bug#32002: 24.4; Scroll bar start, end not correct, Mike Kupfer, 2018/07/07
- bug#32002: 24.4; Scroll bar start, end not correct, Mike Kupfer, 2018/07/07
- bug#32002: 24.4; Scroll bar start, end not correct, martin rudalics, 2018/07/08