# Libpango and sample text editor app **URL:** \ **Category:** Ruby-Gnome 2\ **Created:** [October 14, 2007, 4:29pm UTC](https://www.ruby-forum.com/t/libpango-and-sample-text-editor-app/117192 "2007-10-14T16:29:37Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Chris\_Rohlf](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/47e85d/32.png) [@Chris\_Rohlf](https://www.ruby-forum.com/u/Chris_Rohlf)\ **Post date:** [October 14, 2007, 4:29pm UTC](https://www.ruby-forum.com/t/libpango-and-sample-text-editor-app/117192/1 "2007-10-14T16:29:37Z")
I am playing with the sample text editor app from the ruby/gtk2 site which you can find here: [http://ruby-gnome2.sourceforge.jp/hiki.cgi?Simple+Text+Editor](http://ruby-gnome2.sourceforge.jp/hiki.cgi?Simple+Text+Editor) Im a beginner to ruby (6 months) and a beginning to ruby/gtk2 (1 month) so be kind This app uses a glade xml layout. Within that xml layout is a widget class GtkTextView called ‘textview’. Which has several properties below it. What im looking for is to be able to control the text within that textview using libpango, Preferably using the libpango markup language. i.e. i want to open files like /usr/share/doc/libpango1-ruby/examples/sample.txt and have them displayed correctly within that textview window using [http://ruby-gnome2.sourceforge.jp/hiki.cgi?pango-markup](http://ruby-gnome2.sourceforge.jp/hiki.cgi?pango-markup) i have played around in on\_open\_file() within the text editor. I can grab the plain text and the attributes for my text using Pango.parse\_markup() correctly but I cant display it correctly. Any ideas on how i can achieve this? Thanks! Chris ---
**Author:** ![Chris\_Rohlf](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/47e85d/32.png) [@Chris\_Rohlf](https://www.ruby-forum.com/u/Chris_Rohlf)\ **Post date:** [October 15, 2007, 6:17pm UTC](https://www.ruby-forum.com/t/libpango-and-sample-text-editor-app/117192/2 "2007-10-15T18:17:18Z")
I started down the same path that you are, but had problems related to glade. I decided to not use glade. I had a terrible time with the GTK hierarchy and trying to find out what was what. I ended up by creating a widget, EditView, that wraps the different related GTK classes. I have not included everything in these classes, but I’m adding the things that I need as I need them. I’m attaching it, along with a program that demonstrates its use. HTH ---
**Author:** ![Chris\_Rohlf](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/47e85d/32.png) [@Chris\_Rohlf](https://www.ruby-forum.com/u/Chris_Rohlf)\ **Post date:** [October 16, 2007, 12:58pm UTC](https://www.ruby-forum.com/t/libpango-and-sample-text-editor-app/117192/3 "2007-10-16T12:58:56Z")
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**Author:** ![Chris\_Rohlf](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/47e85d/32.png) [@Chris\_Rohlf](https://www.ruby-forum.com/u/Chris_Rohlf)\ **Post date:** [October 16, 2007, 2:27pm UTC](https://www.ruby-forum.com/t/libpango-and-sample-text-editor-app/117192/4 "2007-10-16T14:27:32Z")
Hi Alan, Nice work. I’ve been doing something very similar indeed. Maybe everyone who looks at the TextView and the TextBuffer thinks that there has got to be an easier way. Once you’ve figured them out it’s a very powerful interface but getting to that point is frustrating. There are actually lots of things in Gtk like that. I’ve been thinking about a ‘sugar’ library for RubyGnome, like the sugar for wxruby or the old EzGtk. Only EzGtk is too much, so how about less of a wrapper for the entire library and more like a set of extension methods for each widget (like the text-only combobox interface). Making the default case easier, without hiding the rich interface. I suspect that wrapping RubyGnome has come up a lot on the list over the last few years, but there doesn’t seem to be a simple set of helpful extension methods around. Want to start one? best, Dan * * * ``` Hi Chris, ``` Thanks for your encouragement. EditView is still in active development.� Since I wrote to you, I’vemade it into a widget.� (I don’t think that the file I gave you reallyqualifies as a widget.)� I’ve been struggling with events, so anythingI give you probably has some code that doesn’t work.� I’m specificallyreferring to current\_line\_length.� I called it from asignal\_connect(key\_release\_event) and asignal\_connect(button\_release\_event).� The reason was that� my user islimited on how long each line can be and wants feedback on how long herline is as she adds characters.� This function worked for that purpose,but somehow began a text selection that I don’t want and can’t turnoff.� It also disabled buttons in the same window by intercepting theclick on the button.� I’m trying another approach that is not aselegant, but may be easier to implement.� (What I think I need is to beable to add functionality to these events, without overriding thecurrent functionality.) Suggestion.� If it lacks some facility that you need, let me know.� Imay have added it or I may be able to add it easily.� I have a thirdfile that is a textual cut and paste from the documentation.� As youcan see, when I take a method from the underlying classes, I copy thedocumentation into the RDoc format, so that (1) I’ll be able togenerate complete documentation for EditView and (2) I’ll be able toadd notes and examples to documentation that I regard as inadequate.�Any method that doesn’t exist in the underlying classes, such as "find"references only methods that I have brought into EditView.� This way,no one need shuffle through many pages to figure out what’s going on. The listings are long enough that the catch the attention of thislist’s moderator.� I’m not certain of the best way to give you updatedlistings.� Perhaps someone can clue me in.� (I also don’t know if thereare others who can benefit from this effort.) Chris Rohlf wrote: Alan,I appreciate your reply :)Im gonna check out your code, it may be just what im looking for. Illlink you to any changes I publishChrisOn 10/14/07, Alan L. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: I started down the same path that you are, but had problems related toglade. I decided to not use glade. I had a terrible time with the GTKhierarchy and trying to find out what was what. I ended up by creatinga widget, EditView, that wraps the different related GTK classes. Ihave not included everything in these classes, but I’m adding the thingsthat I need as I need them. I’m attaching it, along with a program thatdemonstrates its use. HTHChris Rohlf wrote: I am playing with the sample text editor app from the ruby/gtk2 sitewhich you can find here:[http://ruby-gnome2.sourceforge.jp/hiki.cgi?Simple+Text+EditorIm](http://ruby-gnome2.sourceforge.jp/hiki.cgi?Simple+Text+EditorIm) a beginner to ruby (6 months) and a beginning to ruby/gtk2 (1month) so be kindThis app uses a glade xml layout. Within that xml layout is a widgetclass GtkTextView called ‘textview’. Which has several propertiesbelow it. What im looking for is to be able to control the text withinthat textview using libpango, Preferably using the libpango markuplanguage. i.e. i want to open files like/usr/share/doc/libpango1-ruby/examples/sample.txt and have themdisplayed correctly within that textview window usinghttp://ruby-gnome2.sourceforge.jp/hiki.cgi?pango-markupi have played around in on\_open\_file() within the text editor. I cangrab the plain text and the attributes for my text usingPango.parse\_markup() correctly but I cant display it correctly.Any ideas on how i can achieve this?Thanks!Chris-------------------------------------------------------------------------This [SF.net](http://SF.net) email is sponsored by: Splunk Inc.Still grepping through log files to find problems? Stop.Now Search log events and configuration files using AJAX and a browser.Download your FREE copy of Splunk now \>\> [http://get.splunk.com/\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ruby-gnome2-devel-en](http://get.splunk.com/ _______________________________________________ ruby-gnome2-devel-en) mailing removed\_email\_address@domain.invalid://lists.sourceforge.net/lists/listinfo/ruby-gnome2-devel-en -------------------------------------------------------------------------This [SF.net](http://SF.net) email is sponsored by: Splunk Inc.Still grepping through log files to find problems? Stop.Now Search log events and configuration files using AJAX and a browser.Download your FREE copy of Splunk now \>\> [http://get.splunk.com/\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ruby-gnome2-devel-en](http://get.splunk.com/ _______________________________________________ ruby-gnome2-devel-en) mailing removed\_email\_address@domain.invalid://lists.sourceforge.net/lists/listinfo/ruby-gnome2-devel-en > * * * > This [SF.net](http://SF.net) email is sponsored by: Splunk Inc. > Still grepping through log files to find problems? > Stop. > Now Search log events and configuration files using > AJAX and a browser. > Download your FREE copy of Splunk now \>\> > [http://get.splunk.com/](http://get.splunk.com/)\> * * * > ruby-gnome2-devel-en mailing list > removed\_email\_address@domain.invalid > **[ruby-gnome2-devel-en List Signup and Options](https://sourceforge.net/projects/ruby-gnome2/lists/ruby-gnome2-devel-en)** > > This project is a set of Ruby language bindings for the various application development libraries included with the GNOME/GTK+ environment. > This…