Section span option was added to table/tree view footer.

jal/db/balances_model.py

@@ -154,6 +154,8 @@ def configureView(self):
         self._view.setItemDelegateForColumn(self.fieldIndex('currency_name'), self._grid_delegate)
         self._view.setItemDelegateForColumn(self.fieldIndex('value'), self._float_delegate)
         self._view.setItemDelegateForColumn(self.fieldIndex('value_common'), self._float_delegate)
+        self._view.footer().set_span(self.fieldIndex('account_name'), [self.fieldIndex('account_name'), self.fieldIndex('value')])
+        self._view.footer().set_span(self.fieldIndex('value_common'), [self.fieldIndex('currency_name'), self.fieldIndex('value_common')])
         super().configureView()
 
     @Slot()

jal/widgets/custom/table_footer.py

@@ -8,6 +8,7 @@
 class FooterView(QHeaderView):
     def __init__(self, parent: QTreeView, table_header: QHeaderView):
         super().__init__(Qt.Horizontal, parent)
+        self._span = {}
         self._parent = parent
         self._model = None
         self._linked_header = table_header
@@ -47,10 +48,24 @@ def on_header_geometry(self):
         self.setGeometry(cr.left(), cr.top() + cr.height() - hs.height() + 1, hs.width(), hs.height())
 
     def on_header_resize(self, section: int, _old_size: int, new_size: int) -> None:
-        self.resizeSection(section, new_size)
+        if section not in self._span:
+            self.resizeSection(section, new_size)
+            return
+        if self._span[section] != section:
+            self.setSectionHidden(section, True)
+            return
+        size = 0
+        for i in [k for k, v in self._span.items() if v == section]:  # Add all sections that spans to target section
+            size += new_size if i == section else self._linked_header.sectionSize(i)
+        self.resizeSection(section, size)
 
     def on_header_move(self, _section: int, old: int, new: int) -> None:
         self.moveSection(old, new)
 
     def on_model_update(self, top_left, bottom_right, _role) -> None:
         self.headerDataChanged(Qt.Horizontal, top_left.column(), bottom_right.column())
+
+    def set_span(self, section: int, span: list):
+        span += [section]  # protection to have section itself included into span
+        for i in span:
+            self._span[i] = section