4.x viewer trackpad/mouse scrolling on macOS

democrite · 11-14-2019, 07:54 PM

Hello,

Very much like the 4.x improvements to the viewer. One issue I have is with scrolling. I use mainly vertical scrolling. On desktop, like with viewing web pages, word processing docs, PDFs, etc., I tend to favor it and it feels the most natural. Trackpad scrolling isn't the greatest. On initial update to version 4, when using trackpad scrolling, scrolling up or down was quite jumpy and in the instance of using fingers to scroll the entire length of my trackpad, it'd scroll only a few lines and was quite jumpy. Such a gesture on a web browser or other app will scroll about one page full. Scrolling with a flick would correctly use some native elastic rubber band scrolling. Perhaps ideal would be having some option to use non-accelerated scrolling and have it behave like the scrolling in the main apps list of books. That works fine though indeed I would like native scrolling (similar to mobile iOS that everyone is used to if possible (in both places). It seems possible as that was the default behavior. After trying to change the preference for scrolling, I can't get it back. The slightest movement of trackpad or mouse will scroll many pages; such is not usable as even the slighest movement will scroll many pages and scroll by page in vertical scrolling mode maybe shouldn't even be an option. Like how we are used to scrolling web pages and all other vertical scrolling docs, is that best as default?

an unrelated note, I haven't been able to finely adjust font size. I see only a setting for percentage increment for change. Setting it to 1%, the minimum, seems to have no effect. Maybe it's planned to add back a default point size. Being able to set to 1 decimal point precision, e.g. 8.5 pt, would be great.

gbm · 11-14-2019, 08:35 PM

See screenshots.
bernie

Quote:

Originally Posted by democrite

Hello,

Very much like the 4.x improvements to the viewer. One issue I have is with scrolling. I use mainly vertical scrolling. On desktop, like with viewing web pages, word processing docs, PDFs, etc., I tend to favor it and it feels the most natural. Trackpad scrolling isn't the greatest. On initial update to version 4, when using trackpad scrolling, scrolling up or down was quite jumpy and in the instance of using fingers to scroll the entire length of my trackpad, it'd scroll only a few lines and was quite jumpy. Such a gesture on a web browser or other app will scroll about one page full. Scrolling with a flick would correctly use some native elastic rubber band scrolling. Perhaps ideal would be having some option to use non-accelerated scrolling and have it behave like the scrolling in the main apps list of books. That works fine though indeed I would like native scrolling (similar to mobile iOS that everyone is used to if possible (in both places). It seems possible as that was the default behavior. After trying to change the preference for scrolling, I can't get it back. The slightest movement of trackpad or mouse will scroll many pages; such is not usable as even the slighest movement will scroll many pages and scroll by page in vertical scrolling mode maybe shouldn't even be an option. Like how we are used to scrolling web pages and all other vertical scrolling docs, is that best as default?

an unrelated note, I haven't been able to finely adjust font size. I see only a setting for percentage increment for change. Setting it to 1%, the minimum, seems to have no effect. Maybe it's planned to add back a default point size. Being able to set to 1 decimal point precision, e.g. 8.5 pt, would be great.

democrite · 11-14-2019, 09:22 PM

thank you. The step change between options is for me too large. I thought zoom step size would control such an increment.

btw in often changing shortcuts, I noticed pressing esc while editing a shortcut, perhaps something else too, sometimes returns to the shortcut list, sometimes to the main screen, sometimes closes preferences. A new shortcut to go to preferences would be nice too. Seems shortcut defaults use control on macOS while it'd be better to use command.

kovidgoyal · 11-14-2019, 10:21 PM

As far as I know there are no settings that affect scrolling in flow mode. But you can delete ~/Library/Preferences/viewer-webengine.json to restore to defaults.

democrite · 11-14-2019, 11:49 PM

Then something happened. After changing some setting, mouse scrolling changed to by page. Some bug somewhere plus the default behavior isn't working right on macOS.

democrite · 11-22-2019, 06:29 PM

Concerning smooth scrolling, all the new code such as settings and the book list upon initial load work great. Scrolling is smooth and kinetic which I think is the term used by Qt. Perhaps for the viewer itself, there's old code that could use updating or isn't needed that was ported from pre-4.x.

11-14-2019, 07:54 PM	#1
democrite Evangelist Posts: 441 Karma: 77256 Join Date: Sep 2011 Device: none	4.x viewer trackpad/mouse scrolling on macOS Hello, Very much like the 4.x improvements to the viewer. One issue I have is with scrolling. I use mainly vertical scrolling. On desktop, like with viewing web pages, word processing docs, PDFs, etc., I tend to favor it and it feels the most natural. Trackpad scrolling isn't the greatest. On initial update to version 4, when using trackpad scrolling, scrolling up or down was quite jumpy and in the instance of using fingers to scroll the entire length of my trackpad, it'd scroll only a few lines and was quite jumpy. Such a gesture on a web browser or other app will scroll about one page full. Scrolling with a flick would correctly use some native elastic rubber band scrolling. Perhaps ideal would be having some option to use non-accelerated scrolling and have it behave like the scrolling in the main apps list of books. That works fine though indeed I would like native scrolling (similar to mobile iOS that everyone is used to if possible (in both places). It seems possible as that was the default behavior. After trying to change the preference for scrolling, I can't get it back. The slightest movement of trackpad or mouse will scroll many pages; such is not usable as even the slighest movement will scroll many pages and scroll by page in vertical scrolling mode maybe shouldn't even be an option. Like how we are used to scrolling web pages and all other vertical scrolling docs, is that best as default? an unrelated note, I haven't been able to finely adjust font size. I see only a setting for percentage increment for change. Setting it to 1%, the minimum, seems to have no effect. Maybe it's planned to add back a default point size. Being able to set to 1 decimal point precision, e.g. 8.5 pt, would be great.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
macOS - open file directly in E-book Viewer	88%	Calibre	3	04-30-2019 11:25 PM
ebook viewer scrolling problem	cvlowe	Calibre	6	09-02-2014 01:39 PM
Mouse scrolling settings?	exachillus	Calibre	1	09-02-2014 11:47 AM
Mouse-Wheel Scrolling changed in Calibre 2.0 ebook-viewer?	eris23	Calibre	5	08-29-2014 03:03 AM
Mouse wheel scrolling problem	CeeBeePee	Calibre	8	08-11-2013 11:37 PM

11-14-2019, 09:22 PM	#3
democrite Evangelist Posts: 441 Karma: 77256 Join Date: Sep 2011 Device: none	thank you. The step change between options is for me too large. I thought zoom step size would control such an increment. btw in often changing shortcuts, I noticed pressing esc while editing a shortcut, perhaps something else too, sometimes returns to the shortcut list, sometimes to the main screen, sometimes closes preferences. A new shortcut to go to preferences would be nice too. Seems shortcut defaults use control on macOS while it'd be better to use command.

11-14-2019, 10:21 PM	#4
kovidgoyal creator of calibre Posts: 45,339 Karma: 27182818 Join Date: Oct 2006 Location: Mumbai, India Device: Various	As far as I know there are no settings that affect scrolling in flow mode. But you can delete ~/Library/Preferences/viewer-webengine.json to restore to defaults.

11-14-2019, 11:49 PM	#5
democrite Evangelist Posts: 441 Karma: 77256 Join Date: Sep 2011 Device: none	Then something happened. After changing some setting, mouse scrolling changed to by page. Some bug somewhere plus the default behavior isn't working right on macOS.

11-22-2019, 06:29 PM	#6
democrite Evangelist Posts: 441 Karma: 77256 Join Date: Sep 2011 Device: none	Concerning smooth scrolling, all the new code such as settings and the book list upon initial load work great. Scrolling is smooth and kinetic which I think is the term used by Qt. Perhaps for the viewer itself, there's old code that could use updating or isn't needed that was ported from pre-4.x.

Advert

Advert