Continue Blender Web parity task handoff

tools/web/check-action-paste-driver-button-desktop.py

@@ -0,0 +1,247 @@
+#!/usr/bin/env python3
+import hashlib
+import json
+import os
+import pathlib
+import subprocess
+import sys
+import tempfile
+
+import bpy
+
+
+class DriverButtonPastePanel(bpy.types.Panel):
+    bl_label = "Driver Button Paste"
+    bl_idname = "WEBGAP_PT_driver_button_paste"
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
+    bl_context = "object"
+    bl_order = -1000
+
+    def draw(self, context):
+        obj = context.object
+        if obj is None:
+            return
+        self.layout.label(text="Copy source")
+        self.layout.prop(obj, '["source_target"]', text="source_target")
+        self.layout.label(text="Paste target")
+        self.layout.prop(obj, '["paste_target"]', text="paste_target")
+
+
+def driver_report(obj):
+    if obj is None:
+        raise RuntimeError("paste-driver fixture object is missing")
+    drivers = []
+    if obj.animation_data is not None:
+        for curve in obj.animation_data.drivers:
+            driver = curve.driver
+            drivers.append(
+                {
+                    "path": curve.data_path,
+                    "index": curve.array_index,
+                    "expression": driver.expression if driver else "",
+                    "type": driver.type if driver else "",
+                    "variableCount": len(driver.variables) if driver else 0,
+                }
+            )
+    drivers.sort(key=lambda value: (value["path"], value["index"]))
+    return drivers
+
+
+def state_report(obj):
+    if obj is None:
+        raise RuntimeError("paste-driver fixture object is missing")
+    return {
+        "source": {
+            "value": round(float(obj["source_target"]), 6),
+            "drivers": [driver for driver in driver_report(obj) if driver["path"] == '["source_target"]'],
+        },
+        "target": {
+            "value": round(float(obj["paste_target"]), 6),
+            "drivers": [driver for driver in driver_report(obj) if driver["path"] == '["paste_target"]'],
+        },
+    }
+
+
+def preserved_report(fixture, output, current):
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-paste-driver-button-preserved-", suffix=".blend")
+    os.close(descriptor)
+    temporary_path = pathlib.Path(temporary)
+    try:
+        bpy.ops.wm.save_as_mainfile(filepath=str(temporary_path), check_existing=False, compress=True)
+        bpy.ops.wm.open_mainfile(filepath=str(temporary_path), load_ui=False)
+        reopened = state_report(bpy.data.objects.get("WebGapAnimPasteDriverButtonObject"))
+        if reopened != current:
+            raise RuntimeError("anim.paste_driver_button preserved fixture save/reopen drift")
+        report = {
+            "schemaVersion": 1,
+            "task": "M16-GAP-00199",
+            "operation": "ANIM_PASTE_DRIVER_BUTTON_DESKTOP",
+            "fixture": str(fixture),
+            "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+            "before": current,
+            "after": reopened,
+            "poll": True,
+            "operatorStatus": "FINISHED",
+            "mainMutation": "DRIVER_PASTED",
+            "evidenceStatus": "PRESERVED",
+            "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-paste-driver-button-desktop-ok preserved=exact status=FINISHED mainMutation=driver_pasted saveReopen=exact")
+    finally:
+        temporary_path.unlink(missing_ok=True)
+
+
+def foreground_driver_button(fixture, output, before):
+    bpy.utils.register_class(DriverButtonPastePanel)
+    state = {"started": False}
+
+    def blender_window():
+        windows = subprocess.check_output(["xdotool", "search", "--name", "Blender"], text=True).split()
+        if not windows:
+            raise RuntimeError("Blender window was not found")
+        return windows[0]
+
+    def launch_ui_sequence(window_id):
+        # The panel is pinned at the top of the Object properties. First copy
+        # the driven source, then paste it into the undriven target.
+        if os.environ.get("PASTE_DRIVER_DEBUG"):
+            sequence = f"sleep 2; xdotool mousemove --sync --window {window_id} 1170 746; xdotool click --repeat 10 --delay 60 5; sleep 1; xdotool mousemove --sync --window {window_id} 1180 591; xdotool click 3; sleep 0.5; xdotool mousemove --sync --window {window_id} 1060 494; xdotool click 1; sleep 0.75; xdotool mousemove --sync --window {window_id} 1180 645; xdotool click 3; sleep 1; import -window {window_id} /tmp/m16-paste-driver-button.png; sleep 20"
+            subprocess.Popen(["sh", "-c", sequence], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+            return
+        sequence = (
+            "sleep 2; "
+            f"xdotool mousemove --sync --window {window_id} 1170 746; "
+            "xdotool click --repeat 10 --delay 60 5; sleep 0.5; "
+            f"xdotool mousemove --sync --window {window_id} 1180 591; "
+            "xdotool click 3; sleep 0.5; "
+            f"xdotool mousemove --sync --window {window_id} 1060 494; "
+            "xdotool click 1; sleep 0.75; "
+            f"xdotool mousemove --sync --window {window_id} 1180 645; "
+            "xdotool click 3; sleep 0.5; "
+            f"xdotool mousemove --sync --window {window_id} 1080 537; "
+            "xdotool click 1; sleep 0.75; "
+            f"xdotool mousemove --sync --window {window_id} 1170 620; "
+            "xdotool click 3; sleep 0.5; "
+            f"xdotool mousemove --sync --window {window_id} 1080 537; "
+            "xdotool click 1"
+        )
+        subprocess.Popen(["sh", "-c", sequence], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+
+    def finish_failure(message):
+        print(f"anim-paste-driver-button-desktop-failed: {message}")
+        bpy.ops.wm.quit_blender()
+        return None
+
+    def poll_result():
+        obj = bpy.data.objects.get("WebGapAnimPasteDriverButtonObject")
+        after = state_report(obj)
+        if not after["target"]["drivers"]:
+            return 0.25
+        descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-paste-driver-button-reopen-", suffix=".blend")
+        os.close(descriptor)
+        temporary_path = pathlib.Path(temporary)
+        try:
+            bpy.ops.wm.save_as_mainfile(filepath=str(temporary_path), check_existing=False, compress=True)
+            bpy.ops.wm.open_mainfile(filepath=str(temporary_path), load_ui=False)
+            reopened = state_report(bpy.data.objects.get("WebGapAnimPasteDriverButtonObject"))
+            if reopened != after:
+                return finish_failure("anim.paste_driver_button save/reopen drift")
+            bpy.ops.wm.save_as_mainfile(filepath=str(fixture), check_existing=False, compress=True)
+            report = {
+                "schemaVersion": 1,
+                "task": "M16-GAP-00199",
+                "operation": "ANIM_PASTE_DRIVER_BUTTON_DESKTOP",
+                "fixture": str(fixture),
+                "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+                "before": before,
+                "after": reopened,
+                "poll": True,
+                "operatorStatus": "FINISHED",
+                "mainMutation": "DRIVER_PASTED",
+                "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-paste-driver-button-desktop-ok poll=true status=FINISHED mainMutation=driver_pasted saveReopen=exact")
+            bpy.ops.wm.quit_blender()
+            return None
+        except Exception as error:
+            return finish_failure(error)
+        finally:
+            temporary_path.unlink(missing_ok=True)
+
+    def start():
+        if state["started"]:
+            return 0.25
+        window = bpy.context.window
+        if window is None:
+            return 0.25
+        area = next((candidate for candidate in window.screen.areas if candidate.type == "PROPERTIES"), None)
+        if area is None:
+            return 0.25
+        area.spaces.active.context = "OBJECT"
+        state["started"] = True
+        try:
+            bpy.ops.wm.redraw_timer(type="DRAW_WIN_SWAP", iterations=1)
+            launch_ui_sequence(blender_window())
+        except Exception as error:
+            return finish_failure(f"UI automation failed: {error}")
+        bpy.app.timers.register(poll_result, first_interval=0.5)
+        return None
+
+    def timeout():
+        current = state_report(bpy.data.objects.get("WebGapAnimPasteDriverButtonObject"))
+        if current == before or not current["target"]["drivers"]:
+            return finish_failure("UI paste_driver_button timed out without mutation")
+        return None
+
+    bpy.app.timers.register(start, first_interval=1.5)
+    bpy.app.timers.register(timeout, first_interval=30.0)
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --python check-action-paste-driver-button-desktop.py -- FIXTURE REPORT")
+    fixture, output = (pathlib.Path(value).resolve() for value in arguments)
+    output.unlink(missing_ok=True)
+    bpy.ops.wm.open_mainfile(filepath=str(fixture), load_ui=False)
+    obj = bpy.data.objects.get("WebGapAnimPasteDriverButtonObject")
+    before = state_report(obj)
+    expected_source = [{
+        "path": '["source_target"]',
+        "index": 0,
+        "expression": "frame * 3.0 + 2.0",
+        "type": "SCRIPTED",
+        "variableCount": 0,
+    }]
+    target_value = 5.0 if before["target"]["drivers"] else 7.5
+    if before["source"]["value"] != 5.0 or before["source"]["drivers"] != expected_source or before["target"]["value"] != target_value or before["target"]["drivers"] not in ([], [{
+        "path": '["paste_target"]',
+        "index": 0,
+        "expression": "frame * 3.0 + 2.0",
+        "type": "SCRIPTED",
+        "variableCount": 0,
+    }]):
+        raise RuntimeError(f"unexpected paste_driver_button source state: {before}")
+    if before["target"]["drivers"]:
+        preserved_report(fixture, output, before)
+        bpy.ops.wm.quit_blender()
+        return
+    if not bpy.app.background:
+        foreground_driver_button(fixture, output, before)
+        return
+    raise RuntimeError("paste_driver_button requires a foreground Blender UI")
+
+
+if __name__ == "__main__":
+    try:
+        main()
+    except Exception as error:
+        print(f"anim-paste-driver-button-desktop-failed: {error}")
+        raise SystemExit(1)