rework extras tab to use script system

modules/scripts_postprocessing.py

@@ -0,0 +1,147 @@
+import os
+import gradio as gr
+
+from modules import errors, shared
+
+
+class PostprocessedImage:
+    def __init__(self, image):
+        self.image = image
+        self.info = {}
+
+
+class ScriptPostprocessing:
+    filename = None
+    controls = None
+    args_from = None
+    args_to = None
+
+    order = 1000
+    """scripts will be ordred by this value in postprocessing UI"""
+
+    name = None
+    """this function should return the title of the script."""
+
+    group = None
+    """A gr.Group component that has all script's UI inside it"""
+
+    def ui(self):
+        """
+        This function should create gradio UI elements. See https://gradio.app/docs/#components
+        The return value should be a dictionary that maps parameter names to components used in processing.
+        Values of those components will be passed to process() function.
+        """
+
+        pass
+
+    def process(self, pp: PostprocessedImage, **args):
+        """
+        This function is called to postprocess the image.
+        args contains a dictionary with all values returned by components from ui()
+        """
+
+        pass
+
+    def image_changed(self):
+        pass
+
+
+def wrap_call(func, filename, funcname, *args, default=None, **kwargs):
+    try:
+        res = func(*args, **kwargs)
+        return res
+    except Exception as e:
+        errors.display(e, f"calling {filename}/{funcname}")
+
+    return default
+
+
+class ScriptPostprocessingRunner:
+    def __init__(self):
+        self.scripts = None
+        self.ui_created = False
+
+    def initialize_scripts(self, scripts_data):
+        self.scripts = []
+
+        for script_class, path, basedir, script_module in scripts_data:
+            script: ScriptPostprocessing = script_class()
+            script.filename = path
+
+            self.scripts.append(script)
+
+    def create_script_ui(self, script, inputs):
+        script.args_from = len(inputs)
+        script.args_to = len(inputs)
+
+        script.controls = wrap_call(script.ui, script.filename, "ui")
+
+        for control in script.controls.values():
+            control.custom_script_source = os.path.basename(script.filename)
+
+        inputs += list(script.controls.values())
+        script.args_to = len(inputs)
+
+    def scripts_in_preferred_order(self):
+        if self.scripts is None:
+            import modules.scripts
+            self.initialize_scripts(modules.scripts.postprocessing_scripts_data)
+
+        scripts_order = [x.lower().strip() for x in shared.opts.postprocessing_scipts_order.split(",")]
+
+        def script_score(name):
+            name = name.lower()
+            for i, possible_match in enumerate(scripts_order):
+                if possible_match in name:
+                    return i
+
+            return len(self.scripts)
+
+        script_scores = {script.name: (script_score(script.name), script.order, script.name, original_index) for original_index, script in enumerate(self.scripts)}
+
+        return sorted(self.scripts, key=lambda x: script_scores[x.name])
+
+    def setup_ui(self):
+        inputs = []
+
+        for script in self.scripts_in_preferred_order():
+            with gr.Box() as group:
+                self.create_script_ui(script, inputs)
+
+            script.group = group
+
+        self.ui_created = True
+        return inputs
+
+    def run(self, pp: PostprocessedImage, args):
+        for script in self.scripts_in_preferred_order():
+            shared.state.job = script.name
+
+            script_args = args[script.args_from:script.args_to]
+
+            process_args = {}
+            for (name, component), value in zip(script.controls.items(), script_args):
+                process_args[name] = value
+
+            script.process(pp, **process_args)
+
+    def create_args_for_run(self, scripts_args):
+        if not self.ui_created:
+            with gr.Blocks(analytics_enabled=False):
+                self.setup_ui()
+
+        scripts = self.scripts_in_preferred_order()
+        args = [None] * max([x.args_to for x in scripts])
+
+        for script in scripts:
+            script_args_dict = scripts_args.get(script.name, None)
+            if script_args_dict is not None:
+
+                for i, name in enumerate(script.controls):
+                    args[script.args_from + i] = script_args_dict.get(name, None)
+
+        return args
+
+    def image_changed(self):
+        for script in self.scripts_in_preferred_order():
+            script.image_changed()