Composed column icons: Is there a way to make it appear after non-composed icons?

ownedbycats · 07-13-2020, 04:45 PM

I have a composed icon ruleset. If I move it to the top of the list, it appears in the column alongside any other icons the book matches. If I move it down the list, it disappears if there's other icons.

I'd rather not make the other icons composed ones. Is there a way to make it appear after those ones without disappearing?

BetterRed · 07-13-2020, 05:35 PM

Quote:

Originally Posted by ownedbycats

I have a composed icon. If I move it to the top of the list, it appears in the column alongside any other icons the book matches. If I move it down the list, it disappears if there's other icons.

I'd rather not make the other icons composed ones. Is there a way to make it appear after those ones without disappearing?

Not sure I fully understand your problem, but based on trial and error the following practices work for me:

never attach composed and a regular icons to the same column.
only attach an icon to a real column if the icon rules pertain specifically to that column,
use a transparent image as the default icon - i.e. never have no icon, instead have a blank one,
attach sets of composed icons to a place holder Integer column. In this case the use of transparent icons is crucial - vertical misalignment throws me off kilter

BR

chaley · 07-13-2020, 05:56 PM

Like BR I am not sure I understand what your problem is. Perhaps some definitions will help.

A "composed" icon rule means that subsequent rules are evaluated even if the rule generates an icon. Rules that are not "composed" stop evaluation at the first rule that generates a a displayable icon.

These rules mean that all composed icon rules for a column *must* come before a non-composed rule, assuming you want the rules always to be evaluated. It could be that you do not want that. For example, you might want a rule set that sets the icon to "foo.png" under some condition. If that condition is false then you want to evaluate several rules to add one or more other icons. In this case the first rule would not be "composed" while the remaining rules might or might not be.

ownedbycats · 07-13-2020, 06:06 PM

This screenshot is what I was trying to do:

Click image for larger version

Name: 2020-07-13 19_04_23-calibre - Preferences - Look & feel.png
Views: 157
Size: 67.7 KB
ID: 180579

I was hoping for the bookmark icon to always appear alongside any other matching rules (mainly the reading list one, because the others indicate errors or metadata that needs changing). It doesn't appear though.

I understand how composed icons work now though. I kind of got my desired results by setting both bookmark and readinglist to composed and moving them to the start.

Once I figure out the template language I might be able to do something with the advanced rules.

07-13-2020, 04:45 PM	#1
ownedbycats Custom User Title Posts: 9,036 Karma: 62040591 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD	Composed column icons: Is there a way to make it appear after non-composed icons? I have a composed icon ruleset. If I move it to the top of the list, it appears in the column alongside any other icons the book matches. If I move it down the list, it disappears if there's other icons. I'd rather not make the other icons composed ones. Is there a way to make it appear after those ones without disappearing? Last edited by ownedbycats; 07-13-2020 at 05:31 PM.

07-13-2020, 06:06 PM	#4
ownedbycats Custom User Title Posts: 9,036 Karma: 62040591 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD	This screenshot is what I was trying to do: I was hoping for the bookmark icon to always appear alongside any other matching rules (mainly the reading list one, because the others indicate errors or metadata that needs changing). It doesn't appear though. I understand how composed icons work now though. I kind of got my desired results by setting both bookmark and readinglist to composed and moving them to the start. Once I figure out the template language I might be able to do something with the advanced rules. Last edited by ownedbycats; 07-13-2020 at 06:20 PM.

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07-13-2020, 05:56 PM	#3
chaley Grand Sorcerer Posts: 11,862 Karma: 7036057 Join Date: Jan 2010 Location: Notts, England Device: Kobo Libra 2	Like BR I am not sure I understand what your problem is. Perhaps some definitions will help. A "composed" icon rule means that subsequent rules are evaluated even if the rule generates an icon. Rules that are not "composed" stop evaluation at the first rule that generates a a displayable icon. These rules mean that all composed icon rules for a column must come before a non-composed rule, assuming you want the rules always to be evaluated. It could be that you do not want that. For example, you might want a rule set that sets the icon to "foo.png" under some condition. If that condition is false then you want to evaluate several rules to add one or more other icons. In this case the first rule would not be "composed" while the remaining rules might or might not be.

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