[IMP] sign_stamp: add company stamp support for users

Technical Changes:
- stamp_sign_stamp and stamp_sign_stamp_frame field in res.users
- Implemented  and  methods in
   to fetch user stamp and frame.
- Allows displaying the company stamp and frame in signature dialogs for sign
  requests.

Author: utpat-odoo

sign_stamp/__init__.py

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+from . import models

sign_stamp/models/__init__.py

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+from . import res_user
+from . import sign_request_item

sign_stamp/models/res_user.py

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+from odoo import models, fields
+
+STAMP_USER_FIELDS = ["stamp_sign_stamp", "stamp_sign_stamp_frame"]
+
+
+class ResUsers(models.Model):
+    _inherit = "res.users"
+
+    @property
+    def SELF_READABLE_FIELDS(self):
+        return super().SELF_READABLE_FIELDS + STAMP_USER_FIELDS
+
+    @property
+    def SELF_WRITEABLE_FIELDS(self):
+        return super().SELF_WRITEABLE_FIELDS + STAMP_USER_FIELDS
+
+    stamp_sign_stamp = fields.Binary(string="Company Stamp", copy=False, groups="base.group_user")
+    stamp_sign_stamp_frame = fields.Binary(string="Company Stamp Frame", copy=False, groups="base.group_user")

sign_stamp/models/sign_request_item.py

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+from odoo import models
+
+
+class SignRequestItem(models.Model):
+    _inherit = "sign.request.item"
+
+    def _get_user_stamp(self, stamp_type='stamp_sign_stamp'):
+        self.ensure_one()
+        stamp_user = self.partner_id.user_ids[:1]
+        if stamp_user and stamp_type in ['stamp_sign_stamp']:
+            return stamp_user[stamp_type]
+        return False
+
+    def _get_user_stamp_frame(self, stamp_type='stamp_sign_stamp_frame'):
+        self.ensure_one()
+        stamp_user = self.partner_id.user_ids[:1]
+        if stamp_user and stamp_type in ['stamp_sign_stamp_frame']:
+            return stamp_user[stamp_type]
+        return False