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 Forum index » Advanced Topics » Cutting edge
Gtkdialog Development
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thunor


Joined: 14 Oct 2010
Posts: 350
Location: Minas Tirith, in the Pelennor Fields fighting the Easterlings
PostPosted: Fri 17 Aug 2012, 12:48    Post subject:  
Added a fontbutton widget

Widget reference: fontbutton widget
Example: examples/fontbutton/fontbutton
fontbutton.png
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Last edited by thunor on Sat 18 Aug 2012, 10:32; edited 1 time in total
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thunor


Joined: 14 Oct 2010
Posts: 350
Location: Minas Tirith, in the Pelennor Fields fighting the Easterlings
PostPosted: Sat 18 Aug 2012, 09:16    Post subject:  
Added "activate" action function

Example: examples/miscellaneous/activate
Description: Allows activation of compatible widgets programatically in a similar way to the user pressing Enter on a focused widget. Can be used as a shortcut for changing the state of toggling widgets, executing the code attached to another widget to eliminate code duplication, activating invisible/insensitive widgets and likely lots of other things I haven't thought of yet.
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zigbert


Joined: 29 Mar 2006
Posts: 6627
Location: Valåmoen, Norway
PostPosted: Sat 18 Aug 2012, 11:10    Post subject:  
Quote:
Added "activate" action function

Wonderful!!!
This will for sure be useful. Cool


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zigbert


Joined: 29 Mar 2006
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PostPosted: Sun 19 Aug 2012, 15:45    Post subject:  
Is it possible to add mouse-right-click to <table> widget?


Sigmund
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thunor


Joined: 14 Oct 2010
Posts: 350
Location: Minas Tirith, in the Pelennor Fields fighting the Easterlings
PostPosted: Mon 20 Aug 2012, 20:13    Post subject:  
zigbert wrote:
Is it possible to add mouse-right-click to <table> widget?


Sigmund

I'm guessing that you want to modify the behaviour of the widget beyond that which the gtk developers have allowed, so maybe if you state what exactly you want to happen on right-click then I could research that.
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thunor


Joined: 14 Oct 2010
Posts: 350
Location: Minas Tirith, in the Pelennor Fields fighting the Easterlings
PostPosted: Mon 20 Aug 2012, 20:38    Post subject:  
Fixed button image with label alignment

Widget reference: button widget
Example: examples/button/button_image_horizontal_alignment
Description: Images with labels are now centred by default as you'd expect from a stock button, but I've offered an additional method of packing them uniformly with homogeneous="true" declared within the button tag.


Last edited by thunor on Mon 20 Aug 2012, 21:35; edited 1 time in total
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technosaurus


Joined: 18 May 2008
Posts: 4873
Location: Blue Springs, MO
PostPosted: Mon 20 Aug 2012, 20:58    Post subject:  
zigbert wrote:
Is it possible to add mouse-right-click to <table> widget?


Sigmund
would that just be (an event box?), button-press-event and a check to see which button? If so, may as well add middle and scrolls.
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zigbert


Joined: 29 Mar 2006
Posts: 6627
Location: Valåmoen, Norway
PostPosted: Tue 21 Aug 2012, 03:17    Post subject:  
I like the button label/image alignment - always been a struggle to get around this .... Thank you.

When is comes to mouse-right-click in <table>, I think of some similar to <tree><action signal="button-release-event">. My intention is to build a right-click menu in the Pmusic left-pane. Today, <table> is the only widget that renders fast enough for huge amount of data. But (compared to <tree>), it lack fetaures like signals, icons and sort when click on column-header.

In addition to a right-click menu, <action signal=...> is the way I move items in playlist.


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BarryK
Puppy Master


Joined: 09 May 2005
Posts: 9177
Location: Perth, Western Australia
PostPosted: Tue 21 Aug 2012, 06:31    Post subject:  
gtkdialog is getting so powerful!

What you guys need now is a GUI layout designer, that presents all the features/options in a GUI and generates XML.

Like the RAD Tool that alexfish, vovchik and others are developing for BaCon:

http://basic-converter.proboards.com/index.cgi?board=code

...hmmm, I wonder if that could be adapted as a RAD tool for gtkdialog?
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zigbert


Joined: 29 Mar 2006
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Location: Valåmoen, Norway
PostPosted: Tue 21 Aug 2012, 15:34    Post subject:  
The <input> doesn't like files that are written to - see example. Doesn't matter if using <input>command or <input file>
The <entry> does not refresh each second.
My feeling says that this issue has become worse in the 0.8.1 branch. It is the same problem for <checkbox> (I haven't tested more).

Code:
#!/bin/bash

echo false > /tmp/TestExit

functionA (){
   while [ "$(</tmp/TestExit)" != "true" ]; do
      date > /tmp/test
   done
}

functionA &

echo '<vbox>
 <timer><action>refresh:ENTRY</action></timer>
 <entry><variable>ENTRY</variable><input file>/tmp/test</input></entry>
</vbox>' | gtkdialog -s

echo true > /tmp/TestExit

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technosaurus


Joined: 18 May 2008
Posts: 4873
Location: Blue Springs, MO
PostPosted: Tue 21 Aug 2012, 15:46    Post subject:  
The image auto-refresh could just as easily be applied to any tag that reads a file. BTW,I used inotify directly because puppy has had issues with gio due to interconnection with gvfs and/or dbus, but I don't specifically know that it won't work.
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thunor


Joined: 14 Oct 2010
Posts: 350
Location: Minas Tirith, in the Pelennor Fields fighting the Easterlings
PostPosted: Tue 21 Aug 2012, 18:06    Post subject:  
zigbert wrote:
The <input> doesn't like files that are written to - see example. Doesn't matter if using <input>command or <input file>
The <entry> does not refresh each second.
My feeling says that this issue has become worse in the 0.8.1 branch. It is the same problem for <checkbox> (I haven't tested more).

Code:
#!/bin/bash

echo false > /tmp/TestExit

functionA (){
   while [ "$(</tmp/TestExit)" != "true" ]; do
      date > /tmp/test
   done
}

functionA &

echo '<vbox>
 <timer><action>refresh:ENTRY</action></timer>
 <entry><variable>ENTRY</variable><input file>/tmp/test</input></entry>
</vbox>' | gtkdialog -s

echo true > /tmp/TestExit

That's an interesting problem.

The gtkdialog function that reads the file and sets the text is fill_entry_by_file .

I placed some test messages into the function so I can see why it's not updating: the file /tmp/test always opens for reading but it hasn't always got something in it. Ocassionally there will be the date inside it but the majority of the time it's empty. So why would that be the case? I'm guessing that /tmp/test is being recreated very speedily by functionA and when the timer refreshes ENTRY once per second, it opens it for reading but it's just been recreated so it's empty. In fact you can see this behaviour by placing <action>echo tick; cat /tmp/test</action> immediately following the <timer> tag.

You can solve this by placing "sleep 1" or "sleep 0.5" inside functionA.

So I can confirm that the timer is ticking every second and that the file is being opened for reading every second but the file is mostly empty so the entry widget isn't being written to which causes it to appear stuck at the last date/time.

The checkbox: can you give me an an example please and I'll look into it. The example I wrote based on your method here, which you said remove <action>if true refresh:chkSwitch</action> from the checkbox because the timer will do it, well that can cause the checkbox to be stuck to true so if you're using that method somewhere then you're going to have problems with it.
Last edited by thunor on Tue 21 Aug 2012, 21:08; edited 1 time in total
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thunor


Joined: 14 Oct 2010
Posts: 350
Location: Minas Tirith, in the Pelennor Fields fighting the Easterlings
PostPosted: Tue 21 Aug 2012, 21:04    Post subject:  
Sigmund

Here's a version of the conditional widget refreshing method that I've been using in my PlayMusic example application. It refreshes on the toggle and you write the inverse of the checkbox's current state to the input file so it doesn't require resetting.

Code:
#!/bin/sh

GTKDIALOG=gtkdialog

export TMPDIR=/tmp/gtkdialog/examples/"$(basename $0)"
mkdir -p "$TMPDIR"

echo false > "$TMPDIR"/chkCheck

export MAIN_DIALOG='
<window title="Conditional Widget Refreshing">
   <vbox>
      <hbox>
         <timer>
            <action>refresh:chkCheck</action>
         </timer>
         <checkbox sensitive="false">
            <variable>chkCheck</variable>
            <input file>'"$TMPDIR"'/chkCheck</input>
            <action>refresh:entDate</action>
         </checkbox>
      </hbox>
      <entry editable="false">
         <variable>entDate</variable>
         <input>date</input>
      </entry>
      <button>
         <label>"Write the inverse of the checkbox'"'"'s current state to its input
file causing it to refresh the date and time via the timer."</label>
         <action>"if [ $chkCheck = true ]; then
                  echo false > '"$TMPDIR"'/chkCheck
               else
                  echo true > '"$TMPDIR"'/chkCheck
               fi"</action>
      </button>
      <hseparator></hseparator>
      <hbox homogeneous="true" space-expand="false" space-fill="false">
         <button use-stock="true" label="gtk-quit"></button>
      </hbox>
   </vbox>
</window>
'

case $1 in
   -d | --dump) echo "$MAIN_DIALOG" ;;
   *) $GTKDIALOG --space-expand=true --space-fill=true --program=MAIN_DIALOG ;;
esac
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smokey01


Joined: 30 Dec 2006
Posts: 2811
Location: South Australia :-(
PostPosted: Wed 22 Aug 2012, 01:45    Post subject:  
Thunor is there an IDE tool/interface for developing gtkdialog code similar to glade?

I really struggle sometimes although there is a lot of good advice here?

I see Barry is asking for the same tools a couple of posts back.

It would be great.
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zigbert


Joined: 29 Mar 2006
Posts: 6627
Location: Valåmoen, Norway
PostPosted: Wed 22 Aug 2012, 09:42    Post subject:  
Thunor
The issue with <checkbox> is similar to the <entry> - You can't actually rely on that it refreshes EVERY time.
Code:
echo false > /tmp/TestExit
echo > /tmp/test

functionA (){
   while [ "$(</tmp/TestExit)" != "true" ]; do
      echo true > /tmp/test
   done
}

functionA &

echo '<vbox>
 <timer><action>refresh:CHK</action></timer>
 <checkbox><variable>CHK</variable><input file>/tmp/test</input><action>if true echo false > /tmp/test</action><action>refresh:CHK</action></checkbox>
</vbox>' | gtkdialog -s

echo true > /tmp/TestExit

This is no big issue, and I guess we talk about complexity when this troubles in 'real' code (and not a built example). It hit badly in pMuisc because the refreshing of Trackinfo uses the same <checkbox> for all trackinfo items. And pMusic won't wait until all items are found until it refreshes. When lyrics is found - refresh. When metainfo is found - refresh. and so on... It might happen that input file are written to at the same time as it tries to read from it. Here follows the refresh-code for trackinfo.

Code:
<timer visible="false" milliseconds="true" interval="'$UPDATE_INTERVAL_TRACKINFO'">
 <variable>TRACKINFO_TIMER</variable>'
 <action>refresh:UPDATE_TRACKINFO</action>
</timer>
<togglebutton visible="false">
 <variable>UPDATE_TRACKINFO</variable>
 <input>cat '$WORKDIR'/UPDATE_TRACKINFO</input>
 <action>if true refresh:ID3_ARTIST</action>
 <action>if true refresh:ID3_TITLE</action>
 <action>if true refresh:ID3_ALBUM</action>
 <action>if true refresh:ID3_YEAR</action>
 <action>if true refresh:ID3_TRACK</action>
 <action>if true refresh:ID3_GENRE</action>
 <action>if true refresh:ICON_ID3_ARTIST</action>
 <action>if true refresh:ICON_ID3_TITLE</action>
 <action>if true refresh:ICON_ID3_ALBUM</action>
 <action>if true refresh:ICON_ID3_YEAR</action>
 <action>if true refresh:ICON_ID3_TRACK</action>
 <action>if true refresh:TXT_ID3_INFO</action>
 <action>if true refresh:EDIT_LYRICS</action>
 <action>if true refresh:LYRICS_SOURCE</action>
 <action>if true refresh:ALBUMART</action>
 <action>if true refresh:ALBUMART_SOURCE</action>
 <action>if true refresh:EDIT_ALBUM</action>
 <action>if true refresh:EDIT_DISCOGRAPHY</action>
 <action>if true refresh:TREE_URLS</action>
 <action>if true refresh:RATING</action>
 <action>if true refresh:STREAMINFO</action>
 <action>if true echo false > '$WORKDIR'/UPDATE_TRACKINFO</action>
 <action>if true refresh:UPDATE_TRACKINFO</action>
</togglebutton>


I have made some extras in pMusic to overcome this issue. It now very seldom occur.
- For some reason <input>cat works better than <input file>
- Ensure to kill already running trackinfo processes and set input file to false before EVERY trackinfo start. It happens more often if clicking rapidly on tracks and open/closing the trackinfo gui Smile
- Use <togglebox> instead of <checkbox> (I assume it should be faster)
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