call_procedure.py

call_procedure.py

# Beware, support for set_core_object_array and set_color_array is poorly tested.

def call_procedure(name, **kwargs):
    procedure = Gimp.get_pdb().lookup_procedure(name)
    if not procedure:
        raise RuntimeError(f"Procedure '{name}' not found")
    
    config = procedure.create_config()
    for key, value in kwargs.items():
        argument = procedure.find_argument(key)
        if not argument:
            raise RuntimeError(f"Argument '{key}' not found in procedure '{name}'")
        
        # TODO: do it better?
        type_name = argument.value_type.name

        if type_name == 'GimpCoreObjectArray':
            config.set_core_object_array(key, value)
        elif type_name == 'GimpColorArray':
            config.set_color_array(key, value)
        else:
            config.set_property(key, value)
    
    result = procedure.run(config)
    
    # Check if the first value is success
    success = result.index(0)

    if not success:
        raise RuntimeError(f"Procedure '{name}' failed with error: {result.index(1)}")
    
    # Return the result: single value if only one, or an array if more
    if result.length() == 2:
        return result.index(1)  # Only one value, return it directly
    else:
        return [result.index(i) for i in range(1, result.length())]  # Multiple values, return as array

# Usage

file = Gio.File.new_for_path(fullpath)

args = {
    'image': img,
    'file': file,
    'compression': 0
}

call_procedure('file-png-export', **args)

if call_procedure('gimp-item-is-group', item=layer):
    pass

xres, yres = call_procedure('gimp-get-monitor-resolution')