NAME

       gtk4-builder-tool - GtkBuilder File Utility

SYNOPSIS

       gtk4-builder-tool <COMMAND> [OPTIONS...] <FILE>

       gtk4-builder-tool validate <FILE>
       gtk4-builder-tool enumerate <FILE>
       gtk4-builder-tool simplify [OPTIONS...] <FILE>
       gtk4-builder-tool preview [OPTIONS...] <FILE>

DESCRIPTION

       gtk4-builder-tool can perform various operations on GtkBuilder UI definition files.

COMMANDS

   Validation
       The validate command validates the given UI definition file and reports errors to stderr.

   Enumeration
       The  enumerate  command  lists all the named objects that are present in the UI definition
       file.

   Preview
       The preview command displays the UI dfinition file.

       This command accepts options to specify the ID of the toplevel object and a  CSS  file  to
       use.

       --id=ID
          The  ID  of  the  object  to preview. If not specified, gtk4-builder-tool will choose a
          suitable object on its own.

       --css=FILE
          Load style information from the given CSS file.

   Simplification
       The simplify command simplifies the UI definition file by removing properties that are set
       to  their  default  values and writes the resulting XML to the standard output, or back to
       the input file.

       When the --3to4 option is specified, the simplify command interprets the input as a GTK  3
       UI  definuition  file and attempts to convert it to GTK 4 equivalents. It performs various
       conversions,  such  as  renaming  properties,  translating  child  properties  to   layout
       properties,  rewriting  the  setup  for  GtkNotebook,  GtkStack, GtkAssistant  or changing
       toolbars into boxes.

       You should always test the modified UI  definition  files  produced  by  gtk4-builder-tool
       before using them in production.

       Note in particular that the conversion done with --3to4 is meant as a starting point for a
       port from GTK 3 to GTK 4. It is expected that you will have to do manual fixups  after the
       initial conversion.

       --replace
          Write the content back to the UI definition file instead of using the standard output.

       --3to4
          Transform a GTK 3 UI definition file to the equivalent GTK 4 definitions.

                                                                              GTK4-BUILDER-TOOL()