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


Joined: 26 Jan 2011
Posts: 1941
Location: Japan
PostPosted: Wed 03 Oct 2018, 04:59    Post subject:  
I made small changes to your example. Every time the button is pressed, the file /tmp/myfile is updated.
The timer widget monitors this file and, when the file changed, emits a "file-changed" signal. I have no idea why the signal is emitted twice.

IMO using the timer widget in this way makes little sense.
Interesting detail: The widget allows more than one input file. Add an <input file> tag for each file and the timer widget will emit a signal when any of these files change.

Code:
#!/bin/bash
touch /tmp/myfile
echo '
 <button>
    <variable>BUT</variable>
    <label>press me</label>
    <action>date > /tmp/myfile</action>
 </button>
     
 <timer visible="true" milliseconds="true" file-monitor="true">
    <input file>/tmp/myfile</input>
    <action signal="file-changed">echo "working signal"</action>
 </timer>
 '| gtkdialog -s
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fabrice_035


Joined: 28 Apr 2014
Posts: 654
Location: Bretagne / France
PostPosted: Wed 03 Oct 2018, 11:59    Post subject:  
Again thank you MochiMoppel.

And I propose this to answer the question of Argolance.
what do you think about it?

Code:

#!/bin/bash
#

touch /tmp/enable_button
touch /tmp/disable_button

# rem

myscript () {

echo "script execute until end and disable button, user must wait"

echo 0 > /tmp/disable_button
#...
sleep 5
#...
echo 0 > /tmp/enable_button
echo "enable now!"

} ; export -f myscript

echo '
 <button>
    <variable>BUT</variable>
   <label> START </label>
    <action>myscript&</action>
 </button>
     
 <timer visible="true" milliseconds="true" file-monitor="true" >
   <input file>/tmp/disable_button</input>
   <action signal="file-changed">disable:BUT</action>
 </timer>
 
  <timer visible="true" milliseconds="true" file-monitor="true" >
   <input file>/tmp/enable_button</input>
   <action signal="file-changed">enable:BUT</action>
 </timer>

 '| gtkdialog -s
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MochiMoppel


Joined: 26 Jan 2011
Posts: 1941
Location: Japan
PostPosted: Wed 03 Oct 2018, 14:47    Post subject:  
Methinks that it will not work.
And since Argolances's question was asked in a different thread you should link to his question or better post in his thread.
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fabrice_035


Joined: 28 Apr 2014
Posts: 654
Location: Bretagne / France
PostPosted: Wed 03 Oct 2018, 15:42    Post subject:  
Perhaps. But i think it's the only way to activate and/or desactivate button while waiting for the end of a script. But i am not expert! Regard.
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Argolance


Joined: 06 Jan 2008
Posts: 3717
Location: PORT-BRILLET (Mayenne - France)
PostPosted: Sat 10 Nov 2018, 13:04    Post subject:  
Bonsoir,
Is it possible to execute a command when a combobox widget is clicked to select an item in the list (for example to echo some message to any temporary file)? If yes, how?
Code:
<combobox>
 <variable>COMBOBOX</variable>
 <item>First item</item>
 <item>Second item</item>
 <item>Third item</item>
 <action>echo yes > /tmp/tmpfile</action>
</combobox>
Thank you.

Cordialement.
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fabrice_035


Joined: 28 Apr 2014
Posts: 654
Location: Bretagne / France
PostPosted: Sat 10 Nov 2018, 13:43    Post subject:  
@Argolance,

I search too, i think it's not possible.

I tried that with comboboxtext

https://github.com/oshazard/gtkdialog/blob/master/examples/miscellaneous/signals

key event work, not mouse activity.

Of course changed event work

Code:

<action signal="changed">echo changed item!</action>


while waiting for an expert Embarassed

Bonne soirée.
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don570


Joined: 10 Mar 2010
Posts: 5389
Location: Ontario
PostPosted: Sat 10 Nov 2018, 13:57    Post subject:  
Looking at docs
http://01micko.com/reference/combobox.html

Various action signals are mentioned.
__________________________________________
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fabrice_035


Joined: 28 Apr 2014
Posts: 654
Location: Bretagne / France
PostPosted: Sat 10 Nov 2018, 14:20    Post subject:  
don570 wrote:
Looking at docs
http://01micko.com/reference/combobox.html

Various action signals are mentioned.
__________________________________________


http://01micko.com/reference/combobox.html

Code:

The following signals are connected-up for all widgets:
button-press-event, button-release-event, configure-event, enter-notify-event, leave-notify-event, focus-in-event, focus-out-event, hide, show, realize, key-press-event, key-release-event, map-event, unmap-event


I think is wrong, u can try.

I hope I'm wrong.

Shocked
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Argolance


Joined: 06 Jan 2008
Posts: 3717
Location: PORT-BRILLET (Mayenne - France)
PostPosted: Sat 10 Nov 2018, 14:55    Post subject:  
don570 wrote:
Looking at docs
http://01micko.com/reference/combobox.html

Various action signals are mentioned.
__________________________________________

I had a look to this page which is in my favorites... but I make the same observation as fabrice_035 (que je salue au passage! Wink): I didn't get any results!
On the other hand, this works as expected for me with the comboboxtext:
Code:
<action signal="changed">echo changed item!</action>

... that I discover and is much better in my case, because this kind of combobox prevents user to alter or type some wrong item in the entry. The option value-in-list seems to be instable and to make the script freezing in some cases.
Thanks!
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Last edited by Argolance on Sun 11 Nov 2018, 05:24; edited 1 time in total
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MochiMoppel


Joined: 26 Jan 2011
Posts: 1941
Location: Japan
PostPosted: Sat 10 Nov 2018, 23:16    Post subject:  
fabrice_035 wrote:
I think is wrong, u can try.
I hope I'm wrong.
I'm afraid you are right.
May depend on what "connected-up" is supposed to mean. Things can be connected but not working (my laptop battery Crying or Very sad ). There is hardly any widget for which all signals in the list work, but combobox, comboboxtext and comboboxentry are an extreme. Only key-press-event and key-release-event seem to work.
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Argolance


Joined: 06 Jan 2008
Posts: 3717
Location: PORT-BRILLET (Mayenne - France)
PostPosted: Sun 11 Nov 2018, 05:27    Post subject:  
Duplicate
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Last edited by Argolance on Mon 12 Nov 2018, 06:20; edited 1 time in total
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fabrice_035


Joined: 28 Apr 2014
Posts: 654
Location: Bretagne / France
PostPosted: Sun 11 Nov 2018, 05:43    Post subject:  
Hi,

The source code can teach us a few things

Example about combobox, open widget_combobox.c, and go to line 223

Code:

      /* Connect signals */

It's empty!

Compare with widget_comboboxtext.c (line 487)

Code:

/* Connect signals */
      g_signal_connect(G_OBJECT(var->Widget), "changed",
         G_CALLBACK(on_any_widget_changed_event),
         (gpointer)var->Attributes);
(...)


I wanted to copy the behavior of wigget_button.c to -> widget_comboboxtext.c but


Code:
(gtkdialog:30539): GLib-GObject-WARNING **: /build/buildd/glib2.0-2.40.2/./gobject/gsignal.c:2462: signal 'toggled' is invalid for instance '0x916d918' of type 'GtkComboBox'


Which is curious https://github.com/oshazard/gtkdialog/blob/master/ChangeLog read changelog:

Code:
* Thu Nov 1 2012 Thunor <thunorsif@hotmail.com>
- Connected-up the button-press/release-event signals to the
comboboxentry widget's child entry widget.


It's important -> *widget's child entry widget* <-

Comboboxtext and comboboxentry *are the same* widget (there is no source code for comboboxentry https://github.com/oshazard/gtkdialog/tree/master/src

widget_comboboxtext.c :
Code:

g_signal_connect(G_OBJECT(gtk_bin_get_child(
            GTK_BIN(var->Widget))), "button-press-event",
            G_CALLBACK(on_any_widget_button_pressed),
            (gpointer)var->Attributes);
         g_signal_connect(G_OBJECT(gtk_bin_get_child(
            GTK_BIN(var->Widget))), "button-release-event",
            G_CALLBACK(on_any_widget_button_released),
            (gpointer)var->Attributes);


I think the window decoration is not tested but just the inside text.

Bon dimanche, nice sunday
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fabrice_035


Joined: 28 Apr 2014
Posts: 654
Location: Bretagne / France
PostPosted: Mon 12 Nov 2018, 17:07    Post subject:    
@Argolance
Code:
Bonsoir,
Is it possible to execute a command when a combobox widget is clicked to select an item in the list (for example to echo some message to any temporary file)? If yes, how?


Hey, finaly it's possible ! Laughing


Code:

#!/bin/sh
#
# find more here http://blogs.czapski.id.au/category/demo-building/gtkdialog
# fxc


export ytdlgui='
<window title="event box demonstration">
<hbox>
<eventbox above-child="false" visible-window="true" has-tooltip="true" tooltip-markup="This is tooltip for eventbox" height-request="30" sensitive="true" visible="true" width-request="140">


<hbox>
<frame All Events here>
<comboboxtext>

 <variable>COMBOBOXTEXT</variable>
 <item>First item</item>
 <item>Second item</item>
 <item>Third item</item>
 
   <action signal="changed">echo Combobox: changed</action>
</comboboxtext>
</frame>
</hbox>
            <variable>vEventBoxOuter</variable>
         
            <action signal="button-press-event">echo Event: button-press-event</action>
            <action signal="button-release-event">echo Event: button-release-event</action>
            <action signal="configure-event">echo Event: configure-event</action>
            <action signal="enter-notify-event">echo Event: enter-notify-event</action>
            <action signal="leave-notify-event">echo Event: leave-notify-event</action>
            <action signal="focus-in-event">echo Event: focus-in-event</action>
            <action signal="focus-out-event">echo Event: focus-out-event</action>
            <action signal="key-press-event">echo Event: key-press-event</action>
            <action signal="key-release-event">echo Event: key-release-event</action>
            <action signal="hide">echo Event: hide</action>
            <action signal="show">echo Event: show</action>
            <action signal="realize">echo Event: realize</action>
            <action signal="map-event">echo Event: map-event</action>
            <action signal="unmap-event">echo Event: unmap-event</action>
            
            
</eventbox>

<frame dedicate >
<comboboxtext>

 <variable>COMBOBOXTEXT2</variable>
 <item>First item</item>
 <item>Second item</item>
 <item>Third item</item>
   
   <action signal="changed">echo Combobox: changed</action>
</comboboxtext>
</frame>

</hbox>
</window>'

gtkdialog --program=ytdlgui


Cool OK it's not perfect Rolling Eyes
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Argolance


Joined: 06 Jan 2008
Posts: 3717
Location: PORT-BRILLET (Mayenne - France)
PostPosted: Mon 12 Nov 2018, 19:54    Post subject:  
Bonsoir,
Bon, là, on joue plus dans la même cour! Embarassed
Effectivement ça marche mais j'avoue être perso "somewhat" largué, eh eh, sur la façon de parvenir à un tel résultat, ah ah...
Well done and thanks Smile.

Cheers!
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Argolance


Joined: 06 Jan 2008
Posts: 3717
Location: PORT-BRILLET (Mayenne - France)
PostPosted: Sun 18 Nov 2018, 14:31    Post subject:  
Bonjour,
Code:
#!/bin/sh

echo "My_tailor_is_rich
My tailor is NOT rich" > /tmp/checkbox_test

FILE="`cat /tmp/checkbox_test`"

for LINE in $FILE; do
LIST="${LIST}
   <checkbox>
      <variable>$LINE</variable>
      <default>true</default>
      <label>$LINE</label>
      <action>if false disable:$LINE</action>
      <action>sed -i 's/$LINE//' /tmp/checkbox_test</action>
      <action>refresh:TEXT</action>
   </checkbox>
"
done

export MAIN="
<window window_position=\"1\">
   <vbox>
      <hbox border-width=\"5\">
         <frame Text (/tmp/checkbox_test)>
            <edit>
            <input file>/tmp/checkbox_test</input>
            <variable>TEXT</variable>
            </edit>
         </frame>
         <frame Checkboxes>
            ${LIST}
         </frame>
      </hbox>
      <hbox>
      <button><input file stock=\"gtk-undo\"></input>
         <label>$(gettext 'Reset')</label>
         <action>EXIT:restart</action>
      </button>      
         <button cancel></button>
      </hbox>
   </vbox>
</window>
"
I=$IFS; IFS=""
for STATEMENTS in  $(gtkdialog --program=MAIN); do
   eval $STATEMENTS
done
IFS=$I

[ "$EXIT" = "restart" ] && $0

In this script, I can't find the solution so that the sentence containing spaces is not segmented.
I tried a lot of things by manipulating single and double quotes, escaping spaces, etc... but without success!
Any idea?

Cordialement
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