Resolution for rasterizing svg images

Resolution for rasterizing svg images

[Dov Grobgeld]

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What is the resolution used when rasterizing svg files when loading them
into image-mode? I have a hdpi monitor, but the desktop dpi seems to be
ignored when loading an svg image, and therefore the raster image is too
smal. Is there anyway of manually overriding the dpi setting used? Note
that this is not the same as scaling the rasterized image.

Thanks!
Dov

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Re: Resolution for rasterizing svg images

[Stefan Monnier]

> What is the resolution used when rasterizing svg files when loading them
> into image-mode? I have a hdpi monitor, but the desktop dpi seems to be
> ignored when loading an svg image, and therefore the raster image is too
> smal. Is there anyway of manually overriding the dpi setting used? Note
> that this is not the same as scaling the rasterized image.

Please report this as a bug: the end user shouldn't have to do
that manually.


        Stefan

Re: Resolution for rasterizing svg images

[Lars Ingebrigtsen]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

>> What is the resolution used when rasterizing svg files when loading them
>> into image-mode? I have a hdpi monitor, but the desktop dpi seems to be
>> ignored when loading an svg image, and therefore the raster image is too
>> smal. Is there anyway of manually overriding the dpi setting used? Note
>> that this is not the same as scaling the rasterized image.
>
> Please report this as a bug: the end user shouldn't have to do
> that manually.

`create-image' should scale the image automatically, whether it's svg or
not (if `image-scaling-factor' is `auto').

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Re: Resolution for rasterizing svg images

[Dov Grobgeld]

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Images indeed scale down, but they don't scale up to fill the available
space.

But as I mentioned, when loading svg's you have two independent steps. The
first step is the rasterization where you turn vector graphics into raster.
There is a separate step of how you scale the resulting raster image. It
makes sense that the second step is identical whether the source is an svg
or png, but my claim is that the first step should be influenced by the
desktop dpi.

I'll open a bug about it as Stefan suggested.

Regards,




On Tue, Dec 8, 2020 at 4:23 PM Lars Ingebrigtsen <larsi@gnus.org> wrote:

> Stefan Monnier <monnier@iro.umontreal.ca> writes:
>
> >> What is the resolution used when rasterizing svg files when loading them
> >> into image-mode? I have a hdpi monitor, but the desktop dpi seems to be
> >> ignored when loading an svg image, and therefore the raster image is too
> >> smal. Is there anyway of manually overriding the dpi setting used? Note
> >> that this is not the same as scaling the rasterized image.
> >
> > Please report this as a bug: the end user shouldn't have to do
> > that manually.
>
> `create-image' should scale the image automatically, whether it's svg or
> not (if `image-scaling-factor' is `auto').
>
> --
> (domestic pets only, the antidote for overdose, milk.)
>    bloggy blog: http://lars.ingebrigtsen.no
>

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