Tolerance and parsing mistakes - Page 2

BetterRed · 01-21-2016, 04:32 PM

What about roger64's problem with text-selection in Sigil. I had the impression that this is the main reason he switches between Sigil and the Calibre editor.

DiapDealer alerted us to that fact that lumpy text-selection is a known Qt issue on some Linux variants. But calibre uses Qt and presumably roger64 uses the same variant of Linux for calibre as he does for Sigil.

Sigil and calibre are probably not on the exact same version of Qt, but they're not that far apart, are they?

Slow text selection in text editing is a show stopper for me.

BR

eschwartz · 01-21-2016, 04:56 PM

I am pretty sure it has nothing to do with Qt5 per se.

I compile Sigil and calibre from source (both are @HEAD), against my system Qt5 (Arch Linux, so latest release) -- calibre is fine, Sigil has slow text selection.

KevinH · 01-21-2016, 05:02 PM

How exactly is it slow? Is this with a mouse drag over a large piece of text or by putting the cursor at the start and shift clicking at the end? Or ... ? If you have an epub, that illustrates this with a selecting a specific section, I will try to recreate it on my Linux Mint 17 build.

Thanks,

KevinH

eschwartz · 01-21-2016, 05:07 PM

Dragging the mouse or using SHIFT + arrow keys (didn't think to try SHIFT+click, I'll get back on that), and I can replicate it with any EPUB including the default blank which is baked into Sigil.

DiapDealer · 01-21-2016, 05:09 PM

Quote:

Originally Posted by eschwartz

Dragging the mouse, and I can replicate it with any EPUB including the default blank which is baked into Sigil.

That's what I experience as well. But it's not always been this way for me. It seems to come and go with the various Qt versions for me.

And it's definitely mouse/pointer-related--as keyboard highlighting works a treat, with absolutely no lag.

EDIT: Well maybe not NO lag, but definitely more responsive with the keyboard than the mouse.

KevinH · 01-21-2016, 05:13 PM

Hi,
I will play around tomorrow on both Linux and Mac OSX. I assume we are talking CodeView here? Does Calibre do syntax highlighting and line numbers as well? Can you think of any obvious differences that might help hint at what might be causing the issue.

KevinH

eschwartz · 01-21-2016, 05:16 PM

calibre does syntax highlighting and line numbers as well. (But of course it could be Sigil's highlighting implementation. How can I turn it off to test?)

Code View, of course.

DiapDealer · 01-21-2016, 05:17 PM

Quote:

Originally Posted by KevinH

Hi,
Can you think of any obvious differences that might help hint at what might be causing the issue.

Not really. It's only relatively recently that the problem even manifested for me. Other people have had it for a long time. Some systems don't seem to suffer from it at all. Case in point: Sigil 0.9.2/Qt5.4.2 on Linux Mint 15 (Ubuntu 13.04) works just fine for me. No highlighting lag.

And it's simply not an issue on even my worst, dog-tired, outdated Windows machines.

BetterRed · 01-21-2016, 05:52 PM

Could it be a Gnome v KDE or similar issue ?

eschwartz · 01-21-2016, 06:01 PM

Now that is weird.

I left the Sigil window open.

Came back just now, was going to double-check SHIFT+click... and there is no slowdown. At all.
Same book. Same Sigil session.

...

Switching books, then closing and restarting Sigil.
Either way... no more speed issues.

...

EDIT: And now it's slow again!

But SHIFT+click doesn't have a slowdown.

DiapDealer · 01-21-2016, 06:12 PM

It's a puzzler alright! I've had times where my main machine (which usually selects text terribly slow) has no problems at all--but it's rare.

KevinH · 01-21-2016, 08:43 PM

Hi,
There was this Sigil bug report but I could never reproduce the problem on Mac OSX or Linux Mint.

https://github.com/Sigil-Ebook/Sigil/issues/39

The poster suggests the slowdown is associated with simply having copied things to the clipboard. He has even posted a video which I never saw. So can anyone confirm that copying things onto the clipboard or having a full clipboard is in any way associated with this slow highlighting coming and going on Linux. He then made a bug report at Qt too.

KevinH

DiapDealer · 01-21-2016, 09:01 PM

Quote:

Originally Posted by KevinH

Hi,
There was this Sigil bug report but I could never reproduce the problem on Mac OSX or Linux Mint.

https://github.com/Sigil-Ebook/Sigil/issues/39

The poster suggests the slowdown is associated with simply having copied things to the clipboard. He has even posted a video which I never saw. So can anyone confirm that copying things onto the clipboard or having a full clipboard is in any way associated with this slow highlighting coming and going on Linux. He then made a bug report at Qt too.

KevinH

I can confirm that clearing the clipboard and restarting Sigil immediately made text selection in codeview work "normally" again!

And copying something (small) to the clipboard and restarting Sigil makes it slow down again.

eschwartz · 01-21-2016, 09:04 PM

I've been able to see the slowdown even when the clipboard is empty.

EDIT: *Restarting* Sigil after clearing the clipboard, it is fast again. Copying the entire Section0001.xhtml from the blank book, pasting it a few times, etc. and it is still fast.

EDIT2: So, is the speed dependent on whether the clipboard has content at launch?

DiapDealer · 01-21-2016, 09:18 PM

Mine appears to be slow whenever there's ANY content in the clipboard at Sigil launch.

01-21-2016, 04:56 PM	#17
eschwartz Ex-Helpdesk Junkie Posts: 19,421 Karma: 85400180 Join Date: Nov 2012 Location: The Beaten Path, USA, Roundworld, This Side of Infinity Device: Kindle Touch fw5.3.7 (Wifi only)	I am pretty sure it has nothing to do with Qt5 per se. I compile Sigil and calibre from source (both are @HEAD), against my system Qt5 (Arch Linux, so latest release) -- calibre is fine, Sigil has slow text selection. Last edited by eschwartz; 01-21-2016 at 04:59 PM.

01-21-2016, 06:01 PM	#25
eschwartz Ex-Helpdesk Junkie Posts: 19,421 Karma: 85400180 Join Date: Nov 2012 Location: The Beaten Path, USA, Roundworld, This Side of Infinity Device: Kindle Touch fw5.3.7 (Wifi only)	Now that is weird. I left the Sigil window open. Came back just now, was going to double-check SHIFT+click... and there is no slowdown. At all. Same book. Same Sigil session. ... Switching books, then closing and restarting Sigil. Either way... no more speed issues. ... EDIT: And now it's slow again! But SHIFT+click doesn't have a slowdown. Last edited by eschwartz; 01-21-2016 at 06:04 PM.

01-21-2016, 09:04 PM	#29
eschwartz Ex-Helpdesk Junkie Posts: 19,421 Karma: 85400180 Join Date: Nov 2012 Location: The Beaten Path, USA, Roundworld, This Side of Infinity Device: Kindle Touch fw5.3.7 (Wifi only)	I've been able to see the slowdown even when the clipboard is empty. EDIT: Restarting Sigil after clearing the clipboard, it is fast again. Copying the entire Section0001.xhtml from the blank book, pasting it a few times, etc. and it is still fast. EDIT2: So, is the speed dependent on whether the clipboard has content at launch? Last edited by eschwartz; 01-21-2016 at 09:15 PM.

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01-21-2016, 04:32 PM	#16
BetterRed null operator (he/him) Posts: 21,725 Karma: 29711016 Join Date: Mar 2012 Location: Sydney Australia Device: none	What about roger64's problem with text-selection in Sigil. I had the impression that this is the main reason he switches between Sigil and the Calibre editor. DiapDealer alerted us to that fact that lumpy text-selection is a known Qt issue on some Linux variants. But calibre uses Qt and presumably roger64 uses the same variant of Linux for calibre as he does for Sigil. Sigil and calibre are probably not on the exact same version of Qt, but they're not that far apart, are they? Slow text selection in text editing is a show stopper for me. BR

01-21-2016, 05:02 PM	#18
KevinH Sigil Developer Posts: 8,764 Karma: 6000000 Join Date: Nov 2009 Device: many	How exactly is it slow? Is this with a mouse drag over a large piece of text or by putting the cursor at the start and shift clicking at the end? Or ... ? If you have an epub, that illustrates this with a selecting a specific section, I will try to recreate it on my Linux Mint 17 build. Thanks, KevinH

01-21-2016, 05:07 PM	#19
eschwartz Ex-Helpdesk Junkie Posts: 19,421 Karma: 85400180 Join Date: Nov 2012 Location: The Beaten Path, USA, Roundworld, This Side of Infinity Device: Kindle Touch fw5.3.7 (Wifi only)	Dragging the mouse or using SHIFT + arrow keys (didn't think to try SHIFT+click, I'll get back on that), and I can replicate it with any EPUB including the default blank which is baked into Sigil.

01-21-2016, 05:13 PM	#21
KevinH Sigil Developer Posts: 8,764 Karma: 6000000 Join Date: Nov 2009 Device: many	Hi, I will play around tomorrow on both Linux and Mac OSX. I assume we are talking CodeView here? Does Calibre do syntax highlighting and line numbers as well? Can you think of any obvious differences that might help hint at what might be causing the issue. KevinH

01-21-2016, 05:16 PM	#22
eschwartz Ex-Helpdesk Junkie Posts: 19,421 Karma: 85400180 Join Date: Nov 2012 Location: The Beaten Path, USA, Roundworld, This Side of Infinity Device: Kindle Touch fw5.3.7 (Wifi only)	calibre does syntax highlighting and line numbers as well. (But of course it could be Sigil's highlighting implementation. How can I turn it off to test?) Code View, of course.

01-21-2016, 05:52 PM	#24
BetterRed null operator (he/him) Posts: 21,725 Karma: 29711016 Join Date: Mar 2012 Location: Sydney Australia Device: none	Could it be a Gnome v KDE or similar issue ?

01-21-2016, 06:12 PM	#26
DiapDealer Grand Sorcerer Posts: 28,570 Karma: 204127028 Join Date: Jan 2010 Device: Nexus 7, Kindle Fire HD	It's a puzzler alright! I've had times where my main machine (which usually selects text terribly slow) has no problems at all--but it's rare.

01-21-2016, 08:43 PM	#27
KevinH Sigil Developer Posts: 8,764 Karma: 6000000 Join Date: Nov 2009 Device: many	Hi, There was this Sigil bug report but I could never reproduce the problem on Mac OSX or Linux Mint. https://github.com/Sigil-Ebook/Sigil/issues/39 The poster suggests the slowdown is associated with simply having copied things to the clipboard. He has even posted a video which I never saw. So can anyone confirm that copying things onto the clipboard or having a full clipboard is in any way associated with this slow highlighting coming and going on Linux. He then made a bug report at Qt too. KevinH

01-21-2016, 09:18 PM	#30
DiapDealer Grand Sorcerer Posts: 28,570 Karma: 204127028 Join Date: Jan 2010 Device: Nexus 7, Kindle Fire HD	Mine appears to be slow whenever there's ANY content in the clipboard at Sigil launch.

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