From: E Sabof <esabof@gmail.com>
To: Tassilo Horn <tsdh@gnu.org>
Cc: 13887@debbugs.gnu.org
Subject: bug#13887: 24.3; doc-view will render blurry images when image-magick is available
Date: Wed, 6 Mar 2013 14:19:19 +0000 [thread overview]
Message-ID: <CAEp6DybMoaMxWWAjzBvLbAar-sJfEOJKZ6hxtxZFiihrR_GoiA@mail.gmail.com> (raw)
In-Reply-To: <8762143co6.fsf@thinkpad.tsdh.de>
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This function gives the native pixel dimensions of an image:
(defun es-image-file-pixel-dimensions (file)
(let* ((type (image-type file nil nil))
(spec (list 'image :type type :file file)))
(image-size spec t)))
When
(> (getf (cdr (doc-view-current-image)) :width)
(car (es-image-file-pixel-dimensions
(getf (cdr (doc-view-current-image)) :file))))
there is quality loss.
What I don't want to see is margins having a different width - for the same
reasons you wouldn't put a photograph in a frame in the top left corner.
Ideally I'd also center vertically (should the image be shorter than the
window) and add a window-configuration-change-hook (or there might be
an appropriate display-spec), so it's always centered. Unfortunately no
image-viewer that currently comes with emacs (image-mode ,doc-view-mode
,image-dired-display-image-mode) does this.
Evgeni
On Wed, Mar 6, 2013 at 1:01 PM, Tassilo Horn <tsdh@gnu.org> wrote:
> E Sabof <esabof@gmail.com> writes:
>
> > I've tried it, indeed it works much better. Might it be possible to
> > store the the "native" size, and raise the resolution automatically
> > when the zoom exceeds it?
>
> Well, the resolution should be increased and the doc reconverted when
> the up-scaled image becomes blurry. But how should emacs know when you
> think it becomes blurry?
>
> > On a side note, might it be also possible to horizontally center the
> > image? There is a pretty straight-forward way to do it, used in the
> > about-emacs screen.
>
> I guess this could be done somehow. But do you want to center to make
> the contents a bit larger and not to see the margins? If so, then
> slicing to the bounding box (`s b') followed by fitting to width (`W')
> may be the better approach.
>
> Bye,
> Tassilo
>
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next prev parent reply other threads:[~2013-03-06 14:19 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-06 3:40 bug#13887: 24.3; doc-view will render blurry images when image-magick is available E Sabof
2013-03-06 8:05 ` Tassilo Horn
2013-03-06 12:13 ` E Sabof
2013-03-06 13:01 ` Tassilo Horn
2013-03-06 14:19 ` E Sabof [this message]
2013-03-06 19:43 ` Tassilo Horn
2013-03-07 15:17 ` E Sabof
2013-03-07 15:55 ` Tassilo Horn
2013-03-07 16:15 ` E Sabof
2013-03-07 22:57 ` E Sabof
2013-03-08 7:57 ` Tassilo Horn
[not found] ` <CAEp6DybMJkagHjRaXPiA_ED_dntOk=5USr+P9DfqRPZ_JrrKww@mail.gmail.com>
2013-03-09 7:25 ` bug#13887: Fwd: " E Sabof
2013-03-09 7:26 ` E Sabof
2013-03-11 9:11 ` Tassilo Horn
2013-03-11 16:57 ` Eli Zaretskii
2013-03-11 18:20 ` Tassilo Horn
2013-03-11 18:45 ` Eli Zaretskii
2013-03-11 20:27 ` Tassilo Horn
2013-03-11 20:59 ` Eli Zaretskii
2013-03-11 22:08 ` E Sabof
2013-03-11 23:41 ` E Sabof
2013-03-12 1:00 ` E Sabof
2013-03-12 8:09 ` Tassilo Horn
2013-03-12 16:50 ` Eli Zaretskii
2013-03-12 18:00 ` Tassilo Horn
2013-03-12 16:52 ` Eli Zaretskii
2013-03-12 17:46 ` E Sabof
2013-03-12 21:11 ` Eli Zaretskii
2013-03-14 3:28 ` E Sabof
2013-03-14 3:56 ` E Sabof
2013-03-14 7:24 ` Tassilo Horn
2013-03-14 15:23 ` E Sabof
2013-03-14 16:48 ` Tassilo Horn
2013-03-14 21:42 ` Tassilo Horn
2013-03-15 1:11 ` E Sabof
2013-03-15 12:52 ` Stefan Monnier
2013-03-15 13:34 ` E Sabof
2013-03-15 17:51 ` Stefan Monnier
2013-03-15 23:26 ` E Sabof
2013-03-16 13:41 ` Stefan Monnier
2013-03-16 23:30 ` E Sabof
2013-03-15 13:55 ` Tassilo Horn
2013-03-15 14:08 ` E Sabof
2013-03-20 15:58 ` E Sabof
2019-09-26 17:16 ` Lars Ingebrigtsen
2019-10-14 6:04 ` Lars Ingebrigtsen
2013-03-14 13:26 ` Stefan Monnier
2013-03-14 15:30 ` Tassilo Horn
2013-03-14 15:53 ` E Sabof
2013-03-14 16:19 ` Stefan Monnier
2013-03-06 18:16 ` Stefan Monnier
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