Capture M16 gap execution artifacts

tools/web/check-action-channel-view-pick-desktop.py

@@ -0,0 +1,104 @@
+#!/usr/bin/env python3
+import hashlib
+import json
+import os
+import pathlib
+import sys
+import tempfile
+
+import bpy
+
+
+def action_report():
+    obj = bpy.data.objects.get("WebGapAnimChannelViewPickObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelViewPickObject Action is missing")
+    action = obj.animation_data.action
+    channels = []
+    for layer in action.layers:
+        for strip in layer.strips:
+            for bag in strip.channelbags:
+                for curve in bag.fcurves:
+                    channels.append({
+                        "path": curve.data_path,
+                        "index": curve.array_index,
+                        "frames": [round(float(keyframe.co.x), 6) for keyframe in curve.keyframe_points],
+                    })
+    channels.sort(key=lambda value: (value["path"], value["index"]))
+    return {"name": action.name, "channels": channels}
+
+
+def view_report():
+    area = None
+    for screen in bpy.data.screens:
+        area = next(
+            (candidate for candidate in screen.areas
+             if candidate.type == "DOPESHEET_EDITOR" and candidate.spaces.active.ui_mode == "ACTION" and candidate.height >= 200),
+            None,
+        )
+        if area is not None:
+            break
+    if area is None:
+        raise RuntimeError("Action Editor area is missing")
+    region = next((candidate for candidate in area.regions if candidate.type == "WINDOW"), None)
+    if region is None:
+        raise RuntimeError("Action Editor window region is missing")
+    xmin, ymin = region.view2d.region_to_view(0, 0)
+    xmax, ymax = region.view2d.region_to_view(region.width - 1, region.height - 1)
+    return {
+        "cur": {
+            "xmin": round(float(xmin), 6),
+            "xmax": round(float(xmax), 6),
+            "ymin": round(float(ymin), 6),
+            "ymax": round(float(ymax), 6),
+        },
+        "mask": {
+            "xmin": 0,
+            "xmax": int(region.width - 1),
+            "ymin": 0,
+            "ymax": int(region.height - 1),
+        },
+    }
+
+
+def report_state():
+    return {"action": action_report(), "view2d": view_report()}
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --python check-action-channel-view-pick-desktop.py -- FIXTURE REPORT")
+    fixture, output = (pathlib.Path(value).resolve() for value in arguments)
+    bpy.ops.wm.open_mainfile(filepath=str(fixture), load_ui=True)
+    before = report_state()
+    if before["action"]["name"] != "WebGapAnimChannelViewPickObjectAction":
+        raise RuntimeError(f"unexpected anim.channel_view_pick action: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channel-view-pick-reopen-", suffix=".blend")
+    os.close(descriptor)
+    try:
+        bpy.ops.wm.save_as_mainfile(filepath=temporary, check_existing=False, compress=True)
+        bpy.ops.wm.open_mainfile(filepath=temporary, load_ui=True)
+        after = report_state()
+    finally:
+        pathlib.Path(temporary).unlink(missing_ok=True)
+    if before != after:
+        raise RuntimeError("anim.channel_view_pick save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00152",
+        "operation": "ANIM_CHANNEL_VIEW_PICK_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "action": after["action"],
+        "view2d": after["view2d"],
+        "saveReopen": "EXACT",
+        "blenderVersion": bpy.app.version_string,
+    }
+    output.parent.mkdir(parents=True, exist_ok=True)
+    output.write_text(json.dumps(report, indent=2, sort_keys=True) + "\n", encoding="utf-8")
+    print("anim-channel-view-pick-desktop-ok view2d=exact saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()