Publisher/Photo unwanted extending of picture dimensions

[loukash]

Just now, DarkClown said:

What are the advantages of doing so?

How about watching a few tutorials first…?
https://affinity.serif.com/learn/publisher/desktop
They do help. Trust me. I've watched them all. Which might be one of the reasons why I now understand how things work and why, and what are the advantages of a [insert your goal here] workflow.  

[walt.farrell]

26 minutes ago, DarkClown said:

So rasterising a layer leads to a canvas resize???  Now you lost me even more

If all you did was switch into the Photo Persona, then the "canvas" is the size of the document page you Placed the image onto. 

To have a canvas that's the size of the Placed image, you would need to double-click the image layer or thumbnail so you're editing the Placed image, not the original document.

[DarkClown]

9 minutes ago, walt.farrell said:

If all you did was switch into the Photo Persona, then the "canvas" is the size of the document page you Placed the image onto. 

As you can see in the Video the resulting canvas ist not at all the size of the whole document but online slghtly bigger than the previous original picture.

[walt.farrell]

49 minutes ago, DarkClown said:

How come there are non-transarent elements, outside the image dimensions? Even if it's supposed to work like that I don't see any reason to extend the canvas (unless the rasterisation includes other elements with aditional canvas).

Again, as you did not double-click on the Placed file to open it for editing as a separate document, your "canvas" when you switched to the Photo Persona is the entire page, not the image you think/intend to work on. And once it's rasterized, you have all the pixels (or pixel area, to the edges of the canvas) around it to work with.

22 minutes ago, DarkClown said:

As you can see in the Video the resulting canvas ist not at all the size of the whole document but online slghtly bigger than the previous original picture.

The canvas didn't change size at all. You're still editing in the original document, as all you did was switch Personas.

I cannot explain why the bounding box size changed except that by inpainting you added pixels to that layer (not to the canvas), but without having the actual document I can't begin to explain why that number of pixels were added to that layer.

[loukash]

1 hour ago, walt.farrell said:

I cannot explain why the bounding box size changed except that by inpainting you added pixels to that layer (not to the canvas), but without having the actual document I can't begin to explain why that number of pixels were added to that layer.

It is actually very easy to explain and 100% logical. I just don't want to waste anymore time on that.
In short: Based on the screencast posted, APu only executes everything as being told by @DarkClown. If the outcome is not to their liking, then the cause here is simply a user error by misunderstanding the consequences of the actions they have performed.

Anyone who wants to use an advanced tool like the Affinity trinity professionally, needs to invest time to actually learn and understand its functionality. Hence my well meant advice to go and watch the tutorials first.

[DarkClown]

11 hours ago, loukash said:

Anyone who wants to use an advanced tool like the Affinity trinity professionally, needs to invest time to actually learn and understand its functionality. Hence my well meant advice to go and watch the tutorials first.

Appreciate your wise advice and wisdom and I'm thankful for the valuable time you wasted on his thread ... seeing you are talking to unsuspecting people that are using AP in daily work and taking part at technical discussions in this forum for over 7 years.

[loukash]

5 hours ago, DarkClown said:

you are talking to unsuspecting people that are using AP in daily work and taking part at technical discussions in this forum for over 7 years.

I know, and this is what genuinely puzzles me.