[QScintilla] Bug report: Caret position is incorrect if window dragged across monitors
cowwoc
cowwoc at bbs.darktech.org
Wed May 23 23:18:53 BST 2018
Thanks Scott. As far as I can tell, this bug isn't 4k specific.
If I change my 1080p monitor to have the same scaling factor as the 4k
monitor and drag TortoiseHg across the problem does not occur. The bug
seems tied to different scaling factors, regardless of the monitor
resolution.
Gili
On 2018-05-23 6:17 PM, Scott Bloom wrote:
>
> I don’t have a 4k monitor, but I will try to play with it on a
> multimonitor PC and see if I can set the scaling factor on one screen
> and not the other (all three screens are the same resolution here)
>
> There is not (that I know of) a QScintialla public test app
>
>
> Scott
>
> *From:*cowwoc <cowwoc at bbs.darktech.org>
> *Sent:* Wednesday, May 23, 2018 15:15
> *To:* Scott Bloom <scott at towel42.com>; Phil Thompson
> <phil at riverbankcomputing.com>
> *Cc:* qscintilla at riverbankcomputing.com
> *Subject:* Re: [QScintilla] Bug report: Caret position is incorrect if
> window dragged across monitors
>
> It just tested SciTE and it works fine.
>
> Do you have an equivalent program that uses QScintilla?
>
> PS: Using TortoiseHg, if I keep the application on the same monitor
> and change its scaling factor the bug does not occur. The bug only
> seems to occur when the application is dragged from one monitor to
> another. My guess is that when the application is sitting on one
> monitor and the scaling factor is changed, it receives and responds to
> an event. But when the application is dragged across monitors it does
> not recieve a scaling-specific event and as such it doesn't think to
> update the DPI accordingly. I would be surprised if this logic was
> TortoiseHg-specific (it seems like something that should be handled by
> the lower layers) but who knows...
>
> Thanks,
> Gili
>
> On 2018-05-23 6:08 PM, Scott Bloom wrote:
>
> Understood.
>
> You may want to try SciTE.
>
> That is a base editor, tied to the core Scintilla widget, not used
> QScintilla (which is a Qt wrapper for the core)
>
> In reality, the TortoiseHg devs, need to work on this, to see if
> its their bug first..
>
> This could be due to the 4k to HD resolution swap…
>
>
> Scott
>
> *From:*cowwoc <cowwoc at bbs.darktech.org>
> <mailto:cowwoc at bbs.darktech.org>
> *Sent:* Wednesday, May 23, 2018 15:06
> *To:* Scott Bloom <scott at towel42.com> <mailto:scott at towel42.com>;
> Phil Thompson <phil at riverbankcomputing.com>
> <mailto:phil at riverbankcomputing.com>
> *Cc:* qscintilla at riverbankcomputing.com
> <mailto:qscintilla at riverbankcomputing.com>
> *Subject:* Re: [QScintilla] Bug report: Caret position is
> incorrect if window dragged across monitors
>
> Hi Scott,
>
> I'm not affiliated with TortoiseHg. I'm just an end-user. As such,
> I have no idea how to create a minimal testcase outside of
> TortoiseHg. When I filed a bug report at
> https://bitbucket.org/tortoisehg/thg/issues/5086/caret-position-is-incorrect-if-window
> I attached a video demonstrating the problem. Hopefully that'll help.
>
> If you guys have a stand-alone application I could run, I can try
> reproducing the problem with it as well.
>
> Thanks,
> Gili
>
> On 2018-05-23 4:45 PM, Scott Bloom wrote:
>
> I have a PC with multiple monitors..
>
> However, looking at the issue, there is no minimal testcase.
> There is also nothing saying it’s a bug in Scintilla,
> QScintilla or tortoisehg. It could be any of the three.
>
> Why is the assumption being made that its QScintilla?
>
> Scott
>
> *From:*QScintilla <qscintilla-bounces at riverbankcomputing.com>
> <mailto:qscintilla-bounces at riverbankcomputing.com> *On Behalf
> Of *cowwoc
> *Sent:* Wednesday, May 23, 2018 13:42
> *To:* Phil Thompson <phil at riverbankcomputing.com>
> <mailto:phil at riverbankcomputing.com>
> *Cc:* qscintilla at riverbankcomputing.com
> <mailto:qscintilla at riverbankcomputing.com>
> *Subject:* Re: [QScintilla] Bug report: Caret position is
> incorrect if window dragged across monitors
>
> On 2018-05-23 11:09 AM, Phil Thompson wrote:
>
> On 23 May 2018, at 3:01 pm, cowwoc<cowwoc at bbs.darktech.org> <mailto:cowwoc at bbs.darktech.org> wrote:
>
>
>
> On 2018-05-23 8:46 AM, Phil Thompson wrote:
>
> On 22 May 2018, at 3:48 am, cowwoc<cowwoc at bbs.darktech.org>
> <mailto:cowwoc at bbs.darktech.org> wrote:
>
> Sorry, I forgot to include the bug report:https://bitbucket.org/tortoisehg/thg/issues/5086/caret-position-is-incorrect-if-window
>
>
>
> Thank you,
>
> Gili
>
>
>
> On 2018-05-21 9:13 PM, cowwoc wrote:
>
> Hi,
>
>
>
> Can someone please take a look at this bug report which seems to affect your project?
>
> Sorry, I don't have the equipment needed to reproduce the problem.
>
>
>
> Phil
>
>
>
> Hi Phil,
>
>
>
> Which equipment are you missing? A video card with 2 ports? 2 monitors? Or a copy of Windows?
>
>
>
> ...and a PC.
>
>
>
> Phil
>
> Fortunately for you, that's not a problem :) Assuming you have
> a Mac laptop:
>
> 1. Plug in a second monitor (any will do) so your laptop sees
> multiple monitors.
> 2. Fire up a virtual machine of your choosing. I used VMWare
> Workstation, which is equivalent to VMWare Fusion on Mac.
> I believe VirtualBox (which is free) will work just as well.
> 3. Download and install the Windows 10 ISO which you can
> download for free from
> https://www.microsoft.com/en-ca/software-download/windows10
> 4. You can run Windows 10 without a license for a short
> period of time (30 days I believe) so this isn't a problem.
> 5. Configure the VM with 2 virtual monitors and you should be
> able to reproduce the problem.
> 6. I just tried it in VMWare Workstation and it worked for me.
>
> I haven't been able to get this working (yet) using a single
> physical monitor. See
> https://superuser.com/questions/1325393/how-to-use-multiple-virtual-monitors-if-host-has-a-single-monitor
>
> But it's possible that VirtualBox is better in this regard
> than VMWare Workstation.
>
> Gili
>
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