bug#65581: 30.0.50; image-mode: scroll and resize

[Manuel Giraud]

Hi,

When using image-mode, I have some minor issue with scrolling and then
resizing.  For example, if you have a big image that you view in its
original size with 'image-transform-reset-to-original' (s o) and then
scroll into it (with C-f/C-n…)

If you get back to the default 'fit-to-window' (s w), the horizontal and
vertical scroll is kept and it places the image oddly into the window.
I have a patch to reset the scrolling when a such a resizing occur but
I'm not sure this is the best thing to do.

Best regards,


In GNU Emacs 30.0.50 (build 2, x86_64-unknown-openbsd7.3) of 2023-08-26
 built on computer
Repository revision: 0cab62035d273024d6052c6ba73993f3f85e9c7e
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101006
System Description: OpenBSD computer 7.3 GENERIC.MP#1125 amd64

Configured using:
 'configure --prefix=/home/manuel/emacs --bindir=/home/manuel/bin
 --with-x-toolkit=no --with-toolkit-scroll-bars=no --without-cairo
 --without-sound --without-compress-install
 CPPFLAGS=-I/usr/local/include LDFLAGS=-L/usr/local/lib'

Configured features:
DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ JPEG JSON LCMS2
LIBOTF LIBXML2 MODULES NOTIFY KQUEUE OLDXMENU PDUMPER PNG RSVG SQLITE3
THREADS TIFF TREE_SITTER WEBP X11 XDBE XFT XIM XINPUT2 XPM ZLIB

Important settings:
  value of $LC_ALL: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: ELisp/l

Minor modes in effect:
  global-git-commit-mode: t
  magit-auto-revert-mode: t
  bug-reference-prog-mode: t
  paredit-mode: t
  display-time-mode: t
  display-battery-mode: t
  server-mode: t
  auto-revert-mode: t
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  desktop-save-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  show-paren-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  line-number-mode: t
  transient-mark-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t

Load-path shadows:
/home/manuel/.emacs.d/elpa/ef-themes-1.3.0/theme-loaddefs hides 
/home/manuel/emacs/share/emacs/30.0.50/lisp/theme-loaddefs

Features:
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magit-repos magit-apply magit-wip magit-log which-func magit-diff
git-commit log-edit magit-core magit-autorevert magit-margin
magit-transient magit-process with-editor magit-mode transient magit-git
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ebdb-autoloads ef-themes-autoloads exwm-autoloads hyperbole-autoloads
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ytdious-autoloads package browse-url url url-proxy url-privacy
url-expand url-methods url-history url-cookie generate-lisp-file
url-domsuf url-util mailcap url-handlers url-parse auth-source cl-seq
eieio eieio-core cl-macs password-cache json subr-x map byte-opt gv
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custom widget keymap hashtable-print-readable backquote threads dbusbind
kqueue lcms2 dynamic-setting system-font-setting font-render-setting
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Memory information:
((conses 16 836936 209378) (symbols 48 62143 3)
 (strings 32 207401 12172) (string-bytes 1 6681211)
 (vectors 16 124307) (vector-slots 8 2450252 92140)
 (floats 8 692 2609) (intervals 56 29536 7613) (buffers 992 117))

-- 
Manuel Giraud