Hello Janne,

On Thu, Apr 15, 2010 at 8:33 PM, Janne Kronback <faultygear...@gmail.com> wrote:
> I used GIMP yesterday after a break of a few months and spend the first hour
> being frustrated.
> Part of it was because I was using a Swedish version which I haven't tried
> before, so all the names were strange at first...
> Anyhow, the manual (chapter 8) says nothing about the issue I had.
> I copied a part of the image as a new layer which I was to "tile" to get a
> bigger surface. I naturally resized the layer x*y times to make room for it
> (I know there are tools to do this, they did however not give me the result
> I was after).

In this situation, I usually adjust the canvas size and select the
option which adjusts all layer sizes accordingly.

> I was then to copy that piece of texture again and paste it into the same
> layer and move it to the correct position repeatedly when the strange thing
> happened..
> The texture just disappeared into nothingness the moment it was slid out of
> the border of the original texture! Even though the layer boundaries was
> resized,
> I could not use it.

You could. It just looked like it was not being pasted. That's an
illusion created by the combination of your method and GIMP's
treatment of layer content outside canvas bounds.

> The manual explicitly says:
> "Note: he amount of memory that a layer consumes is determined by its
> dimensions, not its contents. So, if you are working with large images or
> images that contain many layers, it might pay off to trim layers to the
> minimum possible size. "
> Why did I resize the layer, consume more memory but wasn't allowed to use it
> until I, in another menu, chose "expand drawable area to the boundaries of
> the layer" (in swedish).

You will not be able to see anything outside of the bounds of the
*image*; I expect the menu item that you were looking at was the same
as the english item "Fit Canvas to Layers".

The canvas is the boundary size of the image (and it is usually what
you will find you want to really adjust, rather than layer boundary

> This doesn't feel like it should be the default behaviour. Out of curiosity,
> why would you want to expand a layer that you cannot draw on?

I suspect you want to reword that question, as there is no such thing
as a layer which you actually cannot draw on (except by explicitly
indicating you want that, using the 'lock pixels' or 'lock alpha'
It's perfectly possible to set things up so you are likely to THINK
you cannot draw on a layer as it's not visible; but such thoughts are
inaccurate, you can draw, paste, etc on it just the same as any other
layer; the layer just is not visible until you move your layer back
within canvas bounds

Hope that helps,

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