About Canvas Size

[ReMake]

When I open an image and increases the size of the canvas, a field around the image is filled with white. Is it right? I expected the field around the image must be transparent.

[Red ochre]

Hi Remake,

If you change the Secondary 'Color' opacity to zero, it will extend the canvas with a transparent area.
Personally I would prefer it to use transparent white as the default though.

[ReMake]

Thank you Red ochre. I have forgotten about opacity.

[Eli]

11 hours ago, ReMake said:

Thank you Red ochre. I have forgotten about opacity.

I know this little trick but everytime I increase the size of the canvas I forget it. .

[Djisves]

If the canvas is expanded, the added canvas area on the BACKGROUND layer is painted with the secondary colour. 

 

However, I've noticed two exceptions:

1. If the original background layer is deleted, the expanded canvas area of the bottom layer is filled with transparency. This is true even if the background layer is duplicated, the original deleted and the copy layer is still named as "background".

2. If a clipboard image is pasted into a new image (Ctrl+Alt+V), the bottom layer in the new image is named "Layer 1" and Paint.NET treats the new image as if it has not a background layer. So, in this case too, he expanded canvas area is filled with transparency with one having to delete any layer. 

 

To save myself from worries of this nature, I always duplicate the bottom layer if I want to expand the canvas and then I just delete it.

Edited April 4, 2017 by Djisves
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