[Gambas-bugtracker] Bug #2957: FontChooser error looking for it's img/filter/filter.png picture

[<bugtracker@xxxxxxxxxxxxxx>]

http://gambaswiki.org/bugtracker/edit?object=BUG.2957&from=L21haW4-

Bruce STEERS reported a new bug.

Summary
-------

FontChooser error looking for it's img/filter/filter.png picture

Type             : Bug
Priority         : Medium
Gambas version   : Master
Product          : GUI components


Description
-----------

Took me a while to track down this error.

This is something that used to work but now has stopped.

In my program I open a window that has a FontChooser in it.

It suddenly now gives a "Null object" error on loading.

I tracked it down to the FontChooser and it's ButtonBox trying to load img/filter/filter.png picture.

I fixed it by copying the gb.form img/filter/filter.png and filter_menu.png path into my project.

In the project to follow, run the program and select menu Options / Look/Style + options.

It will crash as FontChooser sets ButtonBox.Filter property at ButtonBox.UpdateFilterPicture:359

If you then rename the folder in the project called _img to img it will find the images and work okay.

Possibly the problem is my auto-inherited Picture.class that adds Picture.Path property maybe it's changing the root from within gb.form to my project?

I'm not sure but suffice to say , whatever I am doing it stops the FontChooser ButtonBox looking for it's images in the gb.form component.

Nothing else has a problem loading a Picture in the project , only that ButtonBox in the FontChooser so i think maybe a problem in FontChooser rather than my Picture.class

It's the same with gtk and qt


System information
------------------

[System]
Gambas=3.19.90 3ddadc1b1 (bruces-patched)
OperatingSystem=Linux
Distribution=Linux Mint 22 (Wilma)
Kernel=6.8.0-47-generic
Architecture=x86_64
Cores=4
Memory=7861M
Language=en_GB.UTF-8
Platform=x11
Desktop=MATE
DesktopResolution=96
DesktopScale=8
WidgetTheme=proxy
Font=Ubuntu,11
[Programs]
dpkg=Debian 'dpkg' package management program version 1.22.6 (amd64).
gcc=gcc (Ubuntu 13.2.0-23ubuntu4) 13.2.0
git=git version 2.43.0
msgmerge=msgmerge (GNU gettext-tools) 0.21
[Libraries]
Cairo=libcairo.so.2.11800.0
Curl=libcurl.so.4.8.0
DBus=libdbus-1.so.3.32.4
GDK2=libgdk-x11-2.0.so.0.2400.33
GDK3=libgdk-3.so.0.2409.32
GStreamer=libgstreamer-1.0.so.0.2402.0
GTK+2=libgtk-x11-2.0.so.0.2400.33
GTK+3=libgtk-3.so.0.2409.32
OpenGL=libGL.so.1.7.0
Poppler=libpoppler.so.118.0.0
Poppler=libpoppler.so.134.0.0
QT5=libQt5Core.so.5.15.13
QT6=libQt6Core.so.6.4.2
RSvg=librsvg-2.so.2.50.0
SDL=libSDL2-2.0.so.0.3000.0
SQLite3=libsqlite3.so.0.8.6
[Environment]
CLUTTER_BACKEND=x11
CLUTTER_IM_MODULE=ibus
COMPIZ_CONFIG_PROFILE=mint
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
DESKTOP_SESSION=mate
DISPLAY=:0
EDITOR=pluma
GB_GUI=gb.qt5
GDMSESSION=mate
GDM_LANG=en_GB
GNOME_KEYRING_CONTROL=/run/user/1000/keyring
GPG_AGENT_INFO=/run/user/1000/gnupg/S.gpg-agent:0:1
GTK3_MODULES=xapp-gtk3-module
GTK_IM_MODULE=ibus
GTK_MODULES=gail:atk-bridge
GTK_OVERLAY_SCROLLING=0
HOME=<home>
LANG=en_GB.UTF-8
LANGUAGE=en_GB.UTF-8
LC_ADDRESS=en_GB.UTF-8
LC_IDENTIFICATION=en_GB.UTF-8
LC_MEASUREMENT=en_GB.UTF-8
LC_MONETARY=en_GB.UTF-8
LC_NAME=en_GB.UTF-8
LC_NUMERIC=en_GB.UTF-8
LC_PAPER=en_GB.UTF-8
LC_TELEPHONE=en_GB.UTF-8
LC_TIME=en_GB.UTF-8
LOGNAME=<user>
MATE_DESKTOP_SESSION_ID=this-is-deprecated
PATH=<home>/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
PWD=<home>
QT_ACCESSIBILITY=1
QT_FONT_DPI=96
QT_IM_MODULE=ibus
QT_LOGGING_RULES=*.debug=false
QT_SCALE_FACTOR=1
SESSION_MANAGER=local/<hostname>:@/tmp/.ICE-unix/1894,unix/<hostname>:/tmp/.ICE-unix/1894
SHELL=/bin/bash
SHLVL=1
SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
TZ=:/etc/localtime
USER=<user>
XAUTHORITY=<home>/.Xauthority
XDG_CONFIG_DIRS=/etc/xdg/xdg-mate:/etc/xdg
XDG_CURRENT_DESKTOP=MATE
XDG_DATA_DIRS=/usr/share/mate:/usr/share/mate:/usr/share/gnome:<home>/.local/share/flatpak/exports/share:/var/lib/flatpak/exports/share:/usr/local/share:/usr/share
XDG_GREETER_DATA_DIR=/var/lib/lightdm-data/<user>
XDG_RUNTIME_DIR=/run/user/1000
XDG_SEAT=seat0
XDG_SEAT_PATH=/org/freedesktop/DisplayManager/Seat0
XDG_SESSION_CLASS=user
XDG_SESSION_DESKTOP=mate
XDG_SESSION_ID=c1
XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session0
XDG_SESSION_TYPE=x11
XDG_VTNR=7
XMODIFIERS=@im=ibus
_=/usr/bin/env


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