mplayer stdout in textview

HeadAche · **Joined:** Sun Feb 12, 2012 2:23 pm **Posts:** 6

Hi,
I write a simple frontend for mplayer and redirect stdout to a TextView:

Code:

for(;;)
   {
      gtk_widget_set_sensitive(data_app->button_play, FALSE);
      while(g_main_context_iteration(NULL, FALSE));

      status = g_io_channel_read_line(out_ch, &string, &size, NULL, NULL);
      
      buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(data_app->mplayer_view));      
      mark = gtk_text_buffer_get_insert(buffer);
      gtk_text_buffer_get_iter_at_mark(buffer, &iter, mark);
      gtk_text_buffer_insert(buffer, &iter, string, -1);
      g_free(string);
      
      if(status == G_IO_STATUS_EOF)
      {
         gtk_widget_set_sensitive(data_app->button_play, TRUE);
         break;
      }
   }

but encountered a problem visible in the screenshot, multiple lines with A: ... A-V ...
How to make TextView behaved like in the console, refresh this lines in one place?
Maybe there is a better way to show mplayer stdout?

Paul Childs · **Posted:** Sat Mar 31, 2012 11:36 am

Not really a GTK question but a basic programming question.
You need to have an if else condition where if the mplayer text matches the A AV format (for the 2nd or more time in a row) you overwrite the last line in the textview, otherwise you just output it as usual.

HeadAche · **Joined:** Sun Feb 12, 2012 2:23 pm **Posts:** 6

Thank you for your reply,
I rewrote this part of the program like this:

Code:

for(;;)
   {
      gtk_widget_set_sensitive(data_app->button_play, FALSE);
      while(g_main_context_iteration(NULL, FALSE));

      status = g_io_channel_read_line(out_ch, &string, &size, NULL, NULL);
      GString *temp = g_string_new(string);
      if(!(g_strstr_len(temp->str, temp->len, "A-V:")))
      {
         buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(data_app->mplayer_view));
         mark = gtk_text_buffer_get_insert(buffer);
         gtk_text_buffer_get_iter_at_mark(buffer, &iter, mark);
         gtk_text_buffer_insert(buffer, &iter, string, -1);
      }
      else      
      {
         gtk_text_buffer_get_iter_at_line(buffer, &start, 25);
         gtk_text_buffer_get_end_iter(buffer, &end); 
         gtk_text_buffer_delete(buffer, &start, &end);
         gtk_text_buffer_insert(buffer, &start, string, -1);   
      }
      
      g_free(string);
      g_string_free(temp, TRUE);
      
      if(status == G_IO_STATUS_EOF)
      {
         gtk_widget_set_sensitive(data_app->button_play, TRUE);
         break;
      }
   }

it does the trick, but how to automatically get start iter when A-V line occurs? Copy to start the last one iter from if block gtk_text_iter_copy()?

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mplayer stdout in textview

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