[Gambas-bugtracker] Bug #2102: controls not expanding on resize by code (gtk3)

[bugtracker at gambaswiki.org]

http://gambaswiki.org/bugtracker/edit?object=BUG.2102&from=L21haW4-

Bruce STEERS reported a new bug.

Summary
-------

controls not expanding on resize by code (gtk3)

Type             : Bug
Priority         : Medium
Gambas version   : Unknown
Product          : GTK+3 component


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

Many controls , TextArea and Gridview, TerminalView to name a few and many others are not expanding with resize events anymore with gtk3.
resize window with mouse and it's fine just resize with code has problem.

The simple example code below shows the bug on gtk3 , the bug does not happen on gtk2 and qt5 does not do the below code well at all but i do not think the resize bug happens on qt either just gtk3.

i attach a clip showing how all 3 gui's perform with this code.
(Note. code is just an example, i'm getting this bug in a few of my apps)


Public taText As TextArea 

Public Sub Form_Open()
  
  With taText = New TextArea(FMain)
    .Expand = True
    .Background = Color.Blue
  End With
  
End

Public Sub Form_Show()

  Wait 1

  Me.Height -= 100

  Wait 1

  Me.Height += 100

End


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

[System]
Gambas=3.15.90 (bruces-patched) (master fork)
OperatingSystem=Linux
Kernel=5.4.0-60-generic
Architecture=x86_64
Distribution=Linux Mint 20 Ulyana
Desktop=MATE
Theme=crux
Language=en_GB.UTF-8
Memory=7952M

[Libraries]
Cairo=libcairo.so.2.11600.0
Curl=libcurl.so.4.6.0
DBus=libdbus-1.so.3.19.11
GDK2=libgdk-x11-2.0.so.0.2400.32
GDK3=libgdk-3.so.0.2404.16
GStreamer=libgstreamer-1.0.so.0.1602.0
GTK+2=libgtk-x11-2.0.so.0.2400.32
GTK+3=libgtk-3.so.0.2404.16
OpenGL=libGL.so.1.7.0
Poppler=libpoppler.so.97.0.0
QT5=libQt5Core.so.5.12.8
SDL=libSDL-1.2.so.0.11.4
SQLite=libsqlite3.so.0.8.6

[Environment]
CLUTTER_BACKEND=x11
CLUTTER_IM_MODULE=ibus
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
DEFAULTS_PATH=/usr/share/gconf/mate.default.path
DESKTOP_SESSION=mate
DISPLAY=:0
EDITOR=pluma
GB_GUI=gb.gtk3
GDMSESSION=mate
GDM_LANG=en_GB
GIO_LAUNCHED_DESKTOP_FILE_PID=121056
GPG_AGENT_INFO=/run/user/1000/gnupg/S.gpg-agent:0:1
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_ALL=en_GB.UTF-8
LIBVIRT_DEFAULT_URI=qemu:///system
LOGNAME=<user>
MANDATORY_PATH=/usr/share/gconf/mate.mandatory.path
MATE_DESKTOP_SESSION_ID=this-is-deprecated
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
PWD=<home>
QT4_IM_MODULE=ibus
QT_ACCESSIBILITY=1
QT_AUTO_SCREEN_SCALE_FACTOR=0
QT_IM_MODULE=ibus
QT_LOGGING_RULES=*.debug=false
QT_QPA_PLATFORMTHEME=qt5ct
QT_SCALE_FACTOR=1
SESSION_MANAGER=local/<hostname>:@/tmp/.ICE-unix/1412,unix/<hostname>:/tmp/.ICE-unix/1412
SHELL=/bin/bash
SHLVL=0
SSH_AGENT_PID=1570
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:<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