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


Joined: 17 Jul 2011
Posts: 423
Location: Greece
PostPosted: Fri 16 Aug 2013, 13:07    Post_subject:  
Nathan F wrote:
@koulaxizis - check out the comboboxtext and comboboxentry widgets, which are more powerful than the stock combobox.

For comboboxtext, the default signal is "changed", which is emitted when you choose another selection in the combobox. So you can easily do some useful things with it. The following example lists the contents of all the hidden directories in your home folder in the tree widget.
Code:
<vbox>
<comboboxtext tooltip-text="List contents of your dotdirs">
<variable>COMB1</variable>
<input>find $HOME -maxdepth 1 -mindepth 1 -type d -name '.*'</input>
<default>$HOME/.config</default>
<action>refresh:TREE1</action>
</comboboxtext>
<tree>
<label>Contents</label>
<variable>TREE1</variable>
<input>ls \$COMB1</input>
</tree>
<button ok></button>
</vbox>

Hope that's helpful in the future even though you settled on a different approach.


Thank you very much! I'll try this too to see how it goes!
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Nathan F


Joined: 08 Jun 2005
Posts: 1760
Location: Wadsworth, OH (occasionally home)
PostPosted: Sun 18 Aug 2013, 01:54    Post_subject:  
Quick question. Is it still possible to do right click actions on the tree widget? Adding 'signal="button-press-event"' seems to execute the actions on both right and left click, which is not what I remember the case being before.
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Nathan F


Joined: 08 Jun 2005
Posts: 1760
Location: Wadsworth, OH (occasionally home)
PostPosted: Sun 18 Aug 2013, 02:55    Post_subject:  
And another one. Trying to set accel-keys for an app. So far as I can tell, the menu and menuitem widgets are the only ones that accept accel keys.

What I would like to do is set an accel key for an action without actually showing the menuitem. However, so far my experimentation has not worked. It seems if the widget set 'visible="false"' then the accel-key no longer works. I also tried putting a menubar inside a notebook tab with the 'show-tabs="false"' setting, and once again no luck.

At the moment what does work is a menu with a blank label. It doesn't show on the menubar, but it can still be opened by clicking it's location, and the accel-key works. But this is not exactly what I want.
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zigbert


Joined: 29 Mar 2006
Posts: 5540
Location: Valåmoen, Norway
PostPosted: Sun 18 Aug 2013, 02:57    Post_subject:  
Nathan
gtkdialog sends the status of $PTR_BTN. - 1=left, 2=middle, 3=right
Code:
[ $PTR_BTN != 3 ] && exit

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Nathan F


Joined: 08 Jun 2005
Posts: 1760
Location: Wadsworth, OH (occasionally home)
PostPosted: Sun 18 Aug 2013, 03:15    Post_subject:  
Thanks. Works like a champ.
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smokey01


Joined: 30 Dec 2006
Posts: 1787
Location: South Australia
PostPosted: Mon 19 Aug 2013, 10:21    Post_subject:  
Does anyone know how to automatically shrink a gtkdialog window?

By unhiding frames the window will automatically expand to show the new frames but unfortunately it won't shrink back when the frames are hidden again.
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Nathan F


Joined: 08 Jun 2005
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Location: Wadsworth, OH (occasionally home)
PostPosted: Mon 19 Aug 2013, 11:01    Post_subject:  
From my experiments if you set 'resizable="false"' then it will resize back.
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don570


Joined: 10 Mar 2010
Posts: 3021
Location: Ontario
PostPosted: Mon 19 Aug 2013, 16:07    Post_subject:  
Here's a tip for the entry widget...

To make a button so that it will execute when the <ENTER>
key is pressed...


To get the default button to work properly with an
entry widget I found that I needed to put
activates_default="true" with the entry tag

Code:
<entry max_length="2"  activates_default="true">


and then make the button the default

Code:
<button can-default="true" has-default="true">


Taken from Bulldog Finder application

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smokey01


Joined: 30 Dec 2006
Posts: 1787
Location: South Australia
PostPosted: Mon 19 Aug 2013, 22:52    Post_subject:  
Nathan F wrote:
From my experiments if you set 'resizable="false"' then it will resize back.


Thanks Nathan, works great.
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disciple

Joined: 20 May 2006
Posts: 6337
Location: Auckland, New Zealand
PostPosted: Tue 20 Aug 2013, 07:30    Post_subject:  
thunor wrote:
Here's another top tip:

A text widget that has space-expand and space-fill set to true can be used as a spacer to push neighbouring widgets in certain directions.

Here the spacer text is "[]" so you can see it -- drag the window out and watch the button.
Code:
#!/bin/sh

GTKDIALOG=gtkdialog

Spacer="[]"

MAIN_DIALOG='
<window title="Spacer Test" window-position="1">
   <vbox>
      <hbox>
         <button space-expand="false" space-fill="false">
            <label>This button will stay put</label>
            <input file stock="gtk-about"></input>
         </button>
         <text space-expand="true" space-fill="true">
            <label>"'$Spacer'"</label>
         </text>
      </hbox>
   </vbox>
</window>
'
export MAIN_DIALOG

case $1 in
   -d | --dump) echo "$MAIN_DIALOG" ;;
   *) $GTKDIALOG --program=MAIN_DIALOG ;;
esac

Regards,
Thunor


Question: is the space-fill tag actually supposed to do anything? Changing it doesn't seem to have any effect here (0.8.3)...
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don570


Joined: 10 Mar 2010
Posts: 3021
Location: Ontario
PostPosted: Wed 21 Aug 2013, 16:22    Post_subject:  
to Disciple:

Just guessing... but maybe it's related to 'resizable="false/true"' option
in the window tag

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koulaxizis


Joined: 17 Jul 2011
Posts: 423
Location: Greece
PostPosted: Thu 22 Aug 2013, 10:56    Post_subject:  
Still playing with gtkdialog! Smile

If you have some spare time, try this one and suggest me ways to improve it, so i can further understand the possibilities of gtkdialog.

Thank you friends!!

Code:
#!/bin/sh

GTKDIALOG=gtkdialog

export MAIN_DIALOG='
<window title="Find Subtitles" window_position="1">
<vbox>
<frame Choose preferred interface>
<hbox>
<combobox>
<variable>COMBOBOX1</variable>
<item>el</item>
<item>en</item>
<item>es/sp</item>
</combobox>
</hbox>
</frame>
<frame Choose preferred language>
<hbox>
<combobox>
<variable>COMBOBOX2</variable>
<item>ell</item>
<item>eng</item>
<item>spa</item>
</combobox>
</hbox>
</frame>
<frame Paste the exact movie name>
<hbox>
<entry>
<variable>ent2</variable>
</entry>
</hbox>
</frame>
<hbox>
<button>
<label>Find subs!</label>
<action>defaultbrowser http://www.opensubtitles.org/"$COMBOBOX1"/search/sublanguageid-"$COMBOBOX2"/moviename-"$ent2" &</action>
<action>exit:EXIT</action>
</button>
<button cancel></button>
</hbox>
</vbox>
</window>
'

$GTKDIALOG --program=MAIN_DIALOG


Question: Is there a way to automatically read the movie's name with "right-click" on the movie file and clicking the script instead of copy-paste it in the entry?
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Karl Godt


Joined: 20 Jun 2010
Posts: 3845
Location: Kiel,Germany
PostPosted: Thu 22 Aug 2013, 12:26    Post_subject:  
There are two options for a wrapper :

MOVIENAME="$MOVIENAME" /root/my-applications/bin/myz-gui

or

/root/my-applications/bin/myz-gui "$@"

.
The second is the common one .


Then myz-gui would look like

ent2="$MOVIENAME" for the first case

or

ent2="$@" for the second case

and

export ent2
ORIGINAL_CODE
here ..

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koulaxizis


Joined: 17 Jul 2011
Posts: 423
Location: Greece
PostPosted: Thu 22 Aug 2013, 12:33    Post_subject:  
Karl Godt wrote:
There are two options for a wrapper :

MOVIENAME="$MOVIENAME" /root/my-applications/bin/myz-gui

or

/root/my-applications/bin/myz-gui "$@"

.
The second is the common one .


Then myz-gui would look like

ent2="$MOVIENAME" for the first case

or

ent2="$@" for the second case

and

export ent2
ORIGINAL_CODE
here ..

IfIUnderstoodCorrectly


I'm not sure if i understood... Sad

Can you please place it in the code to figure out how it works?
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Nathan F


Joined: 08 Jun 2005
Posts: 1760
Location: Wadsworth, OH (occasionally home)
PostPosted: Thu 22 Aug 2013, 13:31    Post_subject:  
Mainly stylistic changes, use what you like and discard the rest.
Code:
#!/bin/sh

: ${GTKDIALOG:=gtkdialog}

export MAIN_DIALOG="
<window title=\"Find Subtitles\" window_position=\"2\">
<vbox>
<hbox>
<text space-expand=\"false\" space-fill=\"false\">
 <label>$(gettext 'Preferred interface')</label>
</text>
<hbox space-expand=\"true\" space-fill=\"true\"><text><label>\"\"</label></text></hbox>
<comboboxtext space-expand=\"false\" space-fill=\"false\" tooltip-text=\"$(gettext 'The language used to display search results and information')\">
<variable>COMBOBOX1</variable>
<item>el</item>
<item>en</item>
<item>es/sp</item>
</comboboxtext>
</hbox>
<hbox>
<text space-expand=\"false\" space-fill=\"false\">
 <label>$(gettext 'Preferred language')</label>
</text>
<hbox space-expand=\"true\" space-fill=\"true\"><text><label>\"\"</label></text></hbox>
<comboboxtext space-expand=\"false\" space-fill=\"false\" tooltip-text=\"$(gettext 'The language the subtitles should be in')\">
<variable>COMBOBOX2</variable>
<item>ell</item>
<item>eng</item>
<item>spa</item>
</comboboxtext>
</hbox>
<hbox>
<entry tooltip-text=\"$(gettext 'Paste the exact movie title in this box')\" activates-default=\"true\">
<variable>ent2</variable>
</entry>
</hbox>
<hbox>
<button tooltip-text=\"$(gettext 'Get subtitles with an internet browser')\" can-default=\"true\" has-default=\"true\">
<input file icon=\"gtk-ok\"></input>
<label>$(gettext 'Go')</label>
<action>defaultbrowser \"http://www.opensubtitles.org/\$COMBOBOX1/search/sublanguageid-\$COMBOBOX2/moviename-\$ent2\" &</action>
<action>exit:EXIT</action>
</button>
<button tooltip-text=\"$(gettext 'Exit program')\">
<label>$(gettext 'Cancel')</label>
<input file stock=\"gtk-cancel\"></input>
<action>exit:ABORT</action>
</button>
</hbox>
</vbox>
</window>
"

$GTKDIALOG -p MAIN_DIALOG

The construct at the top only assigns the variable GTKDIALOG if it isn't already set. Useful for portability.

My feelings are that sometimes a more concise gui is desirable. I don't really care for the use of frames to display information or to label content, although I've done it before to mock something up quick. Here there is a concise label and a more meaningful tooltip. The entry should be obvious so it's unlabeled, but if unsure the tooltip should clue the user in.

The code to activate the "Go" button is very useful in a case like this and makes it quicker since the user can just press Enter and be taken to the site. Less mouse interaction is desired by a lot of users, especially power users.

I thought it appropriate that an app designed to get subtitles should be localized, so all text strings are displayed via gettext. You would need a line saying 'export TEXTDOMAIN=" near the top, and then it would be localization ready.

It seems more concise to me to quote the entire url.

I wrapped the entire dialog description in double quotes rather than single. This means all double quotes have to be ascaped, but it allows command substitution within the dialog description. Also escaped are the variables set by the comboboxes, so that if you follow my advice below about a state file they will use the current value rather than the saved one.

I also switched it from centered display to display near mouse. Centered display is somehow arrogant to me (look at my app now user!) and not as useful anyway. Place it near the pointer and it's quicker for the user to access. IMO dialogs should only be centered if they are displaying important system information and need to grab the user's attention.

One further suggestion would be to save the output to a state file inside ~/.config, which can then be sourced to set defaults for the two comboboxes on future runs of the program. Users appreciate little touches like that.

Cheers!
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