Print a negative of a page

[PHWNZ]

Greetings

I am a new devotee to Affinity Publisher having been a staunch QuarkXpress user for well over 20 years. One feature I have enjoyed in Quark has been the option to print (to paper) a negative of a page. I use an iPad for keeping the text of speeches & it works better if I create a PDF with white text on a black background that is imported into my iPad . However, I also need a paper copy from time to time & a black page with white text is hard to read but also an expensive print option. In Quark, I could print the page with black text on a white background by clicking on a "negative" button. Any chance of this feature in Affinity please?

[firstdefence]

Affinity doesn't have that option but I would have thought that would also be a feature of the printer and it's software, but, you could always apply a non-destructive Invert adjustment filter. at the top of the layer stack.

[thomaso]

2 hours ago, PHWNZ said:

I use an iPad for keeping the text of speeches & it works better if I create a PDF with white text on a black background

Like @firstdefence I would expect such an option in the Print dialog rather than on Export. But actually it feels more like an option of the viewer app, similar to the various display options when viewing websites in a browser app or the "dark mode" in Affinity and macOS.

May be this would work for you? https://community.adobe.com/t5/acrobat-reader-mobile-discussions/invert-color-reader-ipad-prod/td-p/10284787

[walt.farrell]

You could even have the Invert Adjustment on a Master Page, to make it easy to apply to all the document pages. It's a bit tricky, but easier than manually applying the adjustment if you have enough pages.

1. Create the Master with the Adjustment layer.
2. Apply it to all the pages, retaining the existing Master(s) if any
3. On one document page, right-click that Master Page layer and choose Edit Linked.
4. Click on the Adjustment layer and use the Menu to move it to the front/top. (Don't drag it; use the Menu).

[thomaso]

4 hours ago, firstdefence said:

you could always apply a non-destructive Invert adjustment filter

Wouldn't this additionally require a fill colour for every page or text frame to get the document's paper white (= transparent) turned to black on export?

Also the adjustment would cause rasterization of all text on export and thus might reduce the readability and result in quite a large PDF file size.

2 hours ago, walt.farrell said:

You could even have the Invert Adjustment on a Master Page, to make it easy to apply to all the document pages.

Just in case: To make it work the adjustment layer needs to be nested in a Group layer on its Master Page to affect the document pages.