add an option to enable sections from extras tab in txt2img/img2img

fix some style inconsistenices

modules/scripts_auto_postprocessing.py

@@ -0,0 +1,42 @@
+from modules import scripts, scripts_postprocessing, shared
+
+
+class ScriptPostprocessingForMainUI(scripts.Script):
+    def __init__(self, script_postproc):
+        self.script: scripts_postprocessing.ScriptPostprocessing = script_postproc
+        self.postprocessing_controls = None
+
+    def title(self):
+        return self.script.name
+
+    def show(self, is_img2img):
+        return scripts.AlwaysVisible
+
+    def ui(self, is_img2img):
+        self.postprocessing_controls = self.script.ui()
+        return self.postprocessing_controls.values()
+
+    def postprocess_image(self, p, script_pp, *args):
+        args_dict = {k: v for k, v in zip(self.postprocessing_controls, args)}
+
+        pp = scripts_postprocessing.PostprocessedImage(script_pp.image)
+        pp.info = {}
+        self.script.process(pp, **args_dict)
+        p.extra_generation_params.update(pp.info)
+        script_pp.image = pp.image
+
+
+def create_auto_preprocessing_script_data():
+    from modules import scripts
+
+    res = []
+
+    for name in shared.opts.postprocessing_enable_in_main_ui:
+        script = next(iter([x for x in scripts.postprocessing_scripts_data if x.script_class.name == name]), None)
+        if script is None:
+            continue
+
+        constructor = lambda s=script: ScriptPostprocessingForMainUI(s.script_class())
+        res.append(scripts.ScriptClassData(script_class=constructor, path=script.path, basedir=script.basedir, module=script.module))
+
+    return res