GNU bug report logs - #47039
27.1; find-image ignores image-scaling-factor

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: ynyaaa <at> gmail.com
To: bug-gnu-emacs <at> gnu.org
Subject: 27.1; find-image ignores image-scaling-factor
Date: Wed, 10 Mar 2021 18:49:44 +0900

Evaluating the form below, the image object returned by find-image is
displayed as original size while the image object returend by create-image
is displayed twice the original size.

(let* ((image-scaling-factor 2)
       (img1 (find-image '((:file "gnus/gnus.xpm" :type xpm))))
       (f (image-property img1 :file))
       (img2 (create-image f 'xpm)))
  (insert-image img1)
  (insert ?\n)
  (insert-image img2))


In GNU Emacs 27.1 (build 1, x86_64-w64-mingw32)
 of 2020-08-22 built on CIRROCUMULUS
Repository revision: 86d8d76aa36037184db0b2897c434cdaab1a9ae8
Repository branch: HEAD
Windowing system distributor 'Microsoft Corp.', version 10.0.18363
System Description: Microsoft Windows 10 Pro (v10.0.1909.18363.1379)

Recent messages:

Configured using:
 'configure --without-dbus --host=x86_64-w64-mingw32
 --without-compress-install 'CFLAGS=-O2 -static''

Configured features:
XPM JPEG TIFF GIF PNG RSVG SOUND NOTIFY W32NOTIFY ACL GNUTLS LIBXML2
HARFBUZZ ZLIB TOOLKIT_SCROLL_BARS MODULES THREADS JSON PDUMPER LCMS2 GMP

Important settings:
  value of $LANG: JPN
  locale-coding-system: cp932

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Load-path shadows:
None found.

Features:
(dired-aux gnutls network-stream nsm mailalias smtpmail auth-source
cl-seq eieio eieio-core cl-macs eieio-loaddefs json map misearch
multi-isearch pp shadow sort mail-extr emacsbug message rmc puny dired
dired-loaddefs format-spec rfc822 mml mml-sec password-cache epa derived
epg epg-config gnus-util rmail rmail-loaddefs text-property-search
time-date subr-x seq byte-opt gv bytecomp byte-compile cconv mm-decode
mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader
sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils
help-fns radix-tree cl-print debug backtrace help-mode easymenu
find-func cl-loaddefs cl-lib term/bobcat japan-util tooltip eldoc
electric uniquify ediff-hook vc-hooks lisp-float-type mwheel dos-w32
ls-lisp disp-table term/w32-win w32-win w32-vars term/common-win
tool-bar dnd fontset image regexp-opt fringe tabulated-list replace
newcomment text-mode elisp-mode lisp-mode prog-mode register page
tab-bar menu-bar rfn-eshadow isearch timer select scroll-bar mouse
jit-lock font-lock syntax facemenu font-core term/tty-colors frame
minibuffer cl-generic cham georgian utf-8-lang misc-lang vietnamese
tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek
romanian slovak czech european ethiopic indian cyrillic chinese
composite charscript charprop case-table epa-hook jka-cmpr-hook help
simple abbrev obarray cl-preloaded nadvice loaddefs button faces
cus-face macroexp files text-properties overlay sha1 md5 base64 format
env code-pages mule custom widget hashtable-print-readable backquote
threads w32notify w32 lcms2 multi-tty make-network-process emacs)

Memory information:
((conses 16 79813 22305)
 (symbols 48 8740 11)
 (strings 32 23800 5805)
 (string-bytes 1 751915)
 (vectors 16 14170)
 (vector-slots 8 274238 22448)
 (floats 8 27 294)
 (intervals 56 2565 0)
 (buffers 1000 22))

Message #8 received at 47039 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: ynyaaa <at> gmail.com
Cc: 47039 <at> debbugs.gnu.org
Subject: Re: bug#47039: 27.1; find-image ignores image-scaling-factor
Date: Wed, 10 Mar 2021 15:36:04 +0100

ynyaaa <at> gmail.com writes:

> Evaluating the form below, the image object returned by find-image is
> displayed as original size while the image object returend by create-image
> is displayed twice the original size.

This is a duplicate of bug#40978; merging.

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

Message #13 received at 47039 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: David Ponce <da_vid <at> orange.fr>
Cc: 47039 <at> debbugs.gnu.org, 40978 <at> debbugs.gnu.org
Subject: Re: bug#47039: 27.1; find-image ignores image-scaling-factor
Date: Mon, 20 Jun 2022 11:38:57 +0200

Lars Ingebrigtsen <larsi <at> gnus.org> writes:

>> IMHO, auto-scaling is particularly useful with graphics elements like
>> tool bars, tab bars, and widgets ;-)
>
> Yeah, that's true.  I think.

I was finally reminded that I should try David's patch after looking at
a --with-x-toolkit=lucid build where all the toolbar icons were
minuscule on this 4K 14" laptop screen.

And it does indeed fix these issues, as well as the tiny "Gnu" logo in
the Gnus Group mode line, etc.

So I've now pushed it to Emacs 29.

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

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