FIX: (performances) Avoid unnecessary updatepaint events

TermTk/TTkCore/helper.py

@@ -158,6 +158,8 @@ class TTkHelper:
         TTkHelper._rootWidget.rootLayout().addWidget(widget)
         widget.setFocus()
         widget.raiseWidget()
+        for w in widget.rootLayout().iterWidgets(onlyVisible=True):
+            w.update()
 
     @staticmethod
     def getOverlay():

TermTk/TTkCore/ttk.py

@@ -288,3 +288,6 @@ class TTk(TTkWidget):
         # so CTRL-C can be redirected to the default handler if the app does not exit
         signal.signal(signal.SIGINT,  signal.SIG_DFL)
         self.quit()
+
+    def isVisibleAndParent(self):
+        return self.isVisible()

TermTk/TTkWidgets/widget.py

@@ -534,6 +534,8 @@ class TTkWidget(TMouseEvents,TKeyEvents, TDragEvents):
         self._visible = True
         self._canvas.show()
         self.update(updateLayout=True, updateParent=True)
+        for w in self.rootLayout().iterWidgets(onlyVisible=True):
+            w.update()
 
     @pyTTkSlot()
     def hide(self):
@@ -570,10 +572,9 @@ class TTkWidget(TMouseEvents,TKeyEvents, TDragEvents):
         else: self.hide()
 
     def isVisibleAndParent(self):
-        if self._parent is None:
-            return self._visible
-        else:
-            return self._visible & self._parent.isVisible()
+        return ( self._visible and
+            ( self._parent is not None ) and
+            self._parent.isVisibleAndParent() )
 
     def isVisible(self):
         return self._visible

docs/MDNotes/tests/Widechar_Performances.canvas

@@ -0,0 +1,7 @@
+{
+	"nodes":[
+		{"id":"a4573e875ea36f20","x":-1246,"y":-354,"width":928,"height":275,"type":"text","text":"```\n3537923 function calls (3418179 primitive calls) in 6.790 seconds\n\n185542/179027    0.010    0.000    0.011    0.000 {built-in method builtins.len}\n   176870    0.009    0.000    0.009    0.000 {built-in method unicodedata.east_asian_width}\n   174285    0.009    0.000    0.009    0.000 {built-in method unicodedata.category}\n   169998    0.020    0.000    0.029    0.000 /home/one/github/Varie/pyTermTk.002/TermTk/TTkCore/string.py:603\n   169998    0.022    0.000    0.031    0.000 /home/one/github/Varie/pyTermTk.002/TermTk/TTkCore/string.py:604\n   \n    21356    0.003    0.000    0.004    0.000 /home/one/github/Varie/pyTermTk.002/TermTk/TTkCore/string.py:593\n\n```"},
+		{"id":"e0d1286c4dfd7bd0","x":-1246,"y":-49,"width":928,"height":250,"type":"text","text":"```\n3559400 function calls (3440738 primitive calls) in 16.278 seconds\n\n184908/178405    0.010    0.000    0.011    0.000 {built-in method builtins.len}\n   184286    0.009    0.000    0.009    0.000 {built-in method unicodedata.east_asian_width}\n   182038    0.009    0.000    0.009    0.000 {built-in method unicodedata.category}\n   177747    0.021    0.000    0.029    0.000 /home/one/github/Varie/pyTermTk.002/TermTk/TTkCore/string.py:603\n   177747    0.023    0.000    0.032    0.000 /home/one/github/Varie/pyTermTk.002/TermTk/TTkCore/string.py:604\n\n    21851    0.003    0.000    0.004    0.000 /home/one/github/Varie/pyTermTk.002/TermTk/TTkCore/string.py:593\n```"}
+	],
+	"edges":[]
+}

tests/test.generic.002.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+
+# MIT License
+#
+# Copyright (c) 2021 Eugenio Parodi <ceccopierangiolieugenio AT googlemail DOT com>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+class A():
+    __slots__ = ('a')
+    def __init__(self):
+        self.a = 1
+
+class B():
+    # __slots__ = ('b')
+    def __init__(self):
+        self.b = 1
+
+class C(A,B):
+    __slots__ = ('c')
+    def __init__(self):
+        A.__init__(self)
+        B.__init__(self)
+        self.c = 1
+        # self.d = 1
+
+c = C()
+
+print(c)