horizontal & vertical flip icons reversed??

[Chris Guiver]

Update note: I'm beginning to wonder if I just misunderstand what the icons for vertical & horizontal change are supposed to represent in the elementary* icon themes.

--- (original [edited] report follows)

Noticed this early today; Ubuntu 18.04 laptop using `gpicview` to view pictures (an LXDE/Lubuntu program I regularly use). The 'flip vertical' & 'flip horizontal' icons are reversed.

Tested the same thing on 18.10 using XFCE;

1: load `gpicview` or a program that uses the icons, no issue (if using other icon themes)

2: going into settings | appearance | icons - change to "elementary-xfce-dark" (or elementary, elementary-dark, elementary-xfce-dark, elementary-xfce-darker, elementary-xfce-darkest)

as you use any elementary* icon themes, the flip-horizontal will have a vertical icon, and flip-vertical will have a horizontal icon (on gpicview window if visible; I had this & appearance window visible & altered settings on appearance & saw effect on gpicview window)

to fix - change away from any elementary* icon set.

I confirmed this on original 18.04 laptop (where I noticed it) & my 18.10 workstation.
Default (XFCE) Ristretto program doesn't use those icons

// workstation - 18.10 (screenfetch -n)
 guiverc@d960-ubu2
 OS: Ubuntu 18.10 cosmic
 Kernel: x86_64 Linux 4.17.0-7-generic
 Uptime: 4d 15h 5m
 Packages: 3733
 Shell: bash 4.4.19
 Resolution: 2651x2160
 DE: XFCE
 WM: Xfwm4
 WM Theme: Pills
 GTK Theme: GreenLaguna [GTK2]
 Icon Theme: elementary-xfce-dark
 Font: Sans 10
 CPU: Intel Core2 Quad Q9400 @ 4x 2.667GHz [54.0°C]
 GPU: AMD CEDAR (DRM 2.50.0 / 4.17.0-7-generic, LLVM 6.0.1)
 RAM: 3013MiB / 7848MiB

// laptop - 18.04 (screenfetch -n)
 guiverc@sl510ubu
 OS: Ubuntu 18.04 bionic
 Kernel: x86_64 Linux 4.15.0-32-generic
 Uptime: 2h 24m
 Packages: 2577
 Shell: bash 4.4.19
 Resolution: 3286x1080
 DE: XFCE
 WM: Xfwm4
 WM Theme: Pills
 GTK Theme: MurrinaCrystalLine [GTK2]
 Icon Theme: elementary-xfce-dark
 Font: Sans 10
 CPU: Intel Core2 Duo T6570 @ 2x 2.101GHz [43.0°C]
 GPU: Mesa DRI Mobile Intel® GM45 Express Chipset
 RAM: 483MiB / 1861MiB

I'll provide more if requested - THE ICON THEME is key line in screenfetch. As my wm-theme (pills) is non-standard; I changed it to a default, still same effect as I've described (tested on 18.10 only)

[Chris Guiver (guiverc)]

I'm beginning to wonder if this is really a bug, or I just don't 'get' (comprehend) what the icons for vertical & horizontal change are supposed to represent (which could still be the bug?!).

Daniel changed the bug-affects to `gpicview`; so I thought I'll grab the source & look.. My look was really quick & simple, but I saw nothing in the code that could allow for different handling of this group of 'icon' themes, so the 'bug' could be nothing more than me misunderstanding whatever the icon is supposed to represent... I'll add part of this 'comment' to the start of the description.