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 Forum index » Off-Topic Area » Programming
GtkDialog - tips
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neurino


Joined: 15 Oct 2009
Posts: 360
PostPosted: Mon 23 Aug 2010, 06:35    Post subject:  
This is a libglade-related question but maybe gtkdialod works the same with the syntax explained here...

I want my dialog to commit an action then close itself after a certain button is pressed so I put two actions (signals for libglade) in sequence:

Code:
<signal name="clicked" handler="my_function"/>
<signal name="clicked" handler="EXIT:OK"/>


but the dialog exits before my_function gets executed, I know it because if I remove the EXIT:OK part the function executes flawlessly.

Does this happen with <action>s too?
Is there a turnaround or something for this?

Thanks
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zigbert


Joined: 29 Mar 2006
Posts: 6307
Location: Valåmoen, Norway
PostPosted: Mon 23 Aug 2010, 10:12    Post subject:  
<actions> is executed in the order you put them into your code, so it would execute my_function and then exit. It seems that signals have an internal order.....


Sigmund
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neurino


Joined: 15 Oct 2009
Posts: 360
PostPosted: Mon 23 Aug 2010, 10:14    Post subject:  
sob, unluckily this is not in glade code, I put my_func tag before EXIT but it's not enough

Any ideas or link to refer?
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technosaurus


Joined: 18 May 2008
Posts: 4687
PostPosted: Mon 23 Aug 2010, 10:38    Post subject:  
I don't know if it will work but if you just need them in order maybe something like?
my_function1 && my_function2 && ...
or possibly
`my_function1 && my_function2 && ...`
or
'`my_function1 && my_function2 && ...`'
or
"`my_function1 && my_function2 && ...`"
(depending on how you write the code quotes may need a "\" before them as well)

hopefully one of those works
(if they don't need to be completed in order, just started in order use a single & instead of the double &&)
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neurino


Joined: 15 Oct 2009
Posts: 360
PostPosted: Mon 23 Aug 2010, 12:19    Post subject:  
technosaurus wrote:
I don't know if it will work but if you just need them in order maybe something like?
my_function1 && my_function2 && ...


Ok but I don't need 2 functions but a function THEN EXIT:

Code:
my_func && EXIT:OK


sadly won't work... Confused
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technosaurus


Joined: 18 May 2008
Posts: 4687
PostPosted: Mon 23 Aug 2010, 13:56    Post subject:  
hmmm that would be bad since just having a function that would
killall <program_name>
would prevent being able to use any variables that gtkdialog would return

I wonder if it is possible to export the variables first by:
my_function && export var1 var2 ... && killall <my_program>

there is a way to give your program a name so that it doesn't kill other gtkdialog programs but I don't remember off hand ... could just make a symlink for it so that the name is different.
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seaside

Joined: 11 Apr 2007
Posts: 910
PostPosted: Mon 23 Aug 2010, 15:10    Post subject:  
neurino,

Perhaps put the Exit inside my_func , as the last command.

Just a possible guess, since I haven't tried Libglade. Very Happy

Cheers,
s
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technosaurus


Joined: 18 May 2008
Posts: 4687
PostPosted: Mon 23 Aug 2010, 15:29    Post subject:  
using exit in the function would exit the whole script... but you got me thinking... what if you use?
return EXIT:OK
and put the call to the function as discussed before
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neurino


Joined: 15 Oct 2009
Posts: 360
PostPosted: Tue 24 Aug 2010, 04:13    Post subject:  
technosaurus, thanks but it doesn't work (simply does not close dialog)

If you are sure using <action>s instead of <signal>s will act as expected I'll translate all XML code...
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zigbert


Joined: 29 Mar 2006
Posts: 6307
Location: Valåmoen, Norway
PostPosted: Fri 27 Aug 2010, 16:58    Post subject:  
Here is an example that allows preview of images..... and you thought it wasn't possible Laughing

It requires another gtk-theme switcher that allows changing theme from commandline
Code:

#!/bin/sh
set -a
mkdir -p /tmp/gtk-theme/gtk-2.0
cp -f "$HOME/.gtkrc-2.0" "$HOME/.gtkrcbak"

#define working gtk-theme
TMP=`grep -F '/usr/' $HOME/.gtkrc-2.0 | awk -F'"' '{print $2}' | sed -e 's%//%/%g'` #'
TARGET_DIR=`dirname $TMP`
cp $TARGET_DIR/* /tmp/gtk-theme/gtk-2.0

#add our own special gtk-theme-extension with wallpaper definition
echo 'style "icon-style" {
stock["gtk-wallpaper"] = {
{ "stock_wall.png", *, *, *}}}
class "GtkWidget" style "icon-style"' >> /tmp/gtk-theme/gtk-2.0/gtkrc

#build list for <tree> widget
ls -1 /usr/share/backgrounds > /tmp/wallpapers
while read I; do
   ITEMS="$ITEMS<item>$I</item>"
done < /tmp/wallpapers

#switch image preview
preview() {
   cp -f /usr/share/backgrounds/"$WALLPAPER" /tmp/gtk-theme/gtk-2.0/stock_wall.png
   gtk-theme-switch2 /tmp/gtk-theme
}

#define default preview
WALLPAPER='default.jpg'
preview

#gui
export MAIN_DIALOG='<vbox height-request="250">
  <pixmap icon_size="6"><input file stock="gtk-wallpaper"></input></pixmap>
  <tree>
    <label>Wallpapers</label>
    <variable>WALLPAPER</variable>
    '$ITEMS'
    <action signal="button-release-event">preview</action>
  </tree>
  <hbox><button ok></button></hbox>
</vbox>'
gtkdialog3 -p MAIN_DIALOG

#clean up
rm -rf /tmp/gtk-theme
cp -f "$HOME/.gtkrcbak" "$HOME/.gtkrc-2.0"
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zigbert


Joined: 29 Mar 2006
Posts: 6307
Location: Valåmoen, Norway
PostPosted: Fri 27 Aug 2010, 17:56    Post subject:  
Ok, this is might more useful... Very Happy

A right click menu is sometimes nice.....

Code:
#!/bin/sh
set -a

external_menu(){
   [ ! $BUTTON = 3 ] && exit
   #Try to fetch COLOR from gtk-theme
   TMP="/`grep '/usr/share/themes/' $HOME/.gtkrc-2.0 | cut -d/ -f2- | tr -d '"' | sed 's%//%/%g'`" #'
   COLOR="#`grep -A40 'default' "$TMP" | grep -F 'base[SELECTED]' | cut -d'#' -f2 | cut -d'"' -f1`" #'
   [ "$COLOR" = "#" ] && COLOR='#777777'
   
   #set gtk-theme
   echo 'style "menu" {
     font_name            = "DejaVu Sans 12"
     bg[NORMAL]         = "#cccccc"
     base[NORMAL]         = "#cccccc"   
     base[SELECTED]      = "'$COLOR'"
     text[NORMAL]         = "#222222"
     text[SELECTED]      = "#ffffff"
     engine "pixmap" {
       image {
       function         = FOCUS
       file            = "<none>"}}}
   class "*" style "menu"' > /tmp/gtkrc
   export GTK2_RC_FILES=/tmp/gtkrc
   
   #show menu
   export menu='
   <window title="menu" decorated="false" skip_taskbar_hint="true" window_position="2">
    <vbox>
     <tree hover-selection="true" headers-visible="false">
      <label>a</label>
      <variable>MENU</variable>
      <height>100</height><width>250</width>
      <item stock="gtk-apply">Set theme</item>
      <item stock="gtk-jump-to">Show JWM_switcher</item>
      <item stock="gtk-quit">Quit</item>
      <action signal="button-release-event">EXIT:exit</action>
     </tree>
    </vbox>
    <action signal="leave-notify-event">EXIT:exit</action>
   </window>'
   gtkdialog3 -p menu > /tmp/OUTPUT 2> /dev/null
   
   #actions
   OUTPUT="`grep 'MENU=' /tmp/OUTPUT | cut -d '"' -f 2`" #'
   case $OUTPUT in
      'Set theme')
         cp -f /root/.jwm/themes/${JWM_THEME}-jwmrc /root/.jwm/jwmrc-theme
         cp -f /root/.jwm/themes/${JWM_THEME}-colors /root/.jwm/jwm_colors
         jwm -restart
         ;;
      'Show JWM_switcher')
         /usr/local/jwmconfig2/theme_switcher
         ;;
      'Quit')
         for I in `ps | grep -w "MAIN_DIALOG" | awk '{print $1}'`; do kill -9 $I; done
         exit 0
         ;;
   esac
}

#this builds the list for the <tree> widget
for THEME in `ls -1 /root/.jwm/themes/ | grep 'jwmrc' | sed -e 's/-jwmrc//' | tr '\n' ' '`; do
   THEME="`basename $THEME`"
   ITEMS="$ITEMS<item>$THEME</item>"
done

MAIN_DIALOG='<vbox height-request="250">
  <text><label>Example of an right-click-menu with gtkdialog</label></text>
  <tree hover-selection="true">
    <label>JWM themes</label>
    <variable>JWM_THEME</variable>
    '$ITEMS'
    <action signal="button-press-event">external_menu</action>
  </tree>
  <hbox><button ok></button></hbox>
</vbox>'
export GTK2_RC_FILES=/root/.gtkrc-2.0
gtkdialog3 -p MAIN_DIALOG

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technosaurus


Joined: 18 May 2008
Posts: 4687
PostPosted: Fri 27 Aug 2010, 20:34    Post subject:  
Excellent work Zigbert.

One step closer to eliminating that cursed curses dialog at startup.

Making a first run script:
Code:
#!/bin/sh
#bunch of scripting goes here
[ "`basename $0`" = "Script-firstrun" ] && rm -f $0

now just make a symlink called "Script-firstrun" in /root/Startup and it will run the next time X is started then delete only the symlink

there is an alternative to the delayed run script and I can get Xvesa + jwm to start in less than a second this way
Xvesa -br -screen `Xvesa -listmodes 2>&1 |grep 0x[123][246] |sort |cut -d " " -f 2|tr "\n" " "|cut -d " " -f 1` -shadow -mouse /dev/mouse -nolisten tcp -tst -I & jwm -display :0 && killall Xvesa
or simply
Xvesa & jwm -display :0 && killall Xvesa

jwm has a startup command function builtin - example:
<StartupCommand>rox -p /root/Choices/ROX-Filer/PuppyPin</StartupCommand>
or
<StartupCommand>delayedrun</StartupCommand>
etc...

but you don't even need to start a window manager at all - gtkdialog has a builtin method of attaching itself to a display just as a window manager does

Xvesa & gtkdialog3 -f <file> --display=:0 -c && killall Xvesa
#this can also be -p VARIABLE and can be part of a script
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big_bass

Joined: 13 Aug 2007
Posts: 1742
PostPosted: Fri 27 Aug 2010, 23:07    Post subject:  
excellent stuff Zigbert


couldn't get the viewer up but the rest of the code worked
I am missing this bash: gtk-theme-switch2: command not found
Quote:

It requires another gtk-theme switcher that allows changing theme from commandline




can someone post that script please or a diff
so I test the image viewer

thanks keep the good stuff coming


Joe
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zigbert


Joined: 29 Mar 2006
Posts: 6307
Location: Valåmoen, Norway
PostPosted: Sun 29 Aug 2010, 03:20    Post subject:  
big_bass

Quote:
couldn't get the viewer up but the rest of the code worked
I am missing this bash: gtk-theme-switch2: command not found

Download gtk-theme-switch2 from 3 posts above. You missed a attachment Smile


Sigmund
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01micko


Joined: 11 Oct 2008
Posts: 8568
Location: qld
PostPosted: Sun 29 Aug 2010, 06:41    Post subject:  
Haha!

Cool stuff Sigmund... actually works in Xfce4 too, which I am experimenting with at the moment Wink

Cheers
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