🎉 🎨 Improve pyeditor

pyflow/blocks/executableblock.py

@@ -72,15 +72,15 @@ def has_output(self) -> bool:
 
     def run_code(self):
         """Run the code in the block."""
-
         # Queue the code to execute
         code = self.source
-        kernel = self.scene().kernel
-        kernel.execution_queue.append((self, code))
+        if self.scene():
+            kernel = self.scene().kernel
+            kernel.execution_queue.append((self, code))
 
-        if kernel.busy is False:
-            kernel.run_queue()
-        self.has_been_run = True
+            if kernel.busy is False:
+                kernel.run_queue()
+            self.has_been_run = True
 
     def execution_finished(self):
         """Reset the text of the run buttons."""

pyflow/blocks/pyeditor.py

@@ -19,6 +19,7 @@
 
 POINT_SIZE = 11
 
+
 class PythonEditor(Editor):
 
     """In-block python editor for Pyflow."""
@@ -31,10 +32,14 @@ def __init__(self, block: Block):
 
         """
         super().__init__(block)
+        self.foreground_color = QColor("#dddddd")
+        self.background_color = QColor("#212121")
 
         self.update_theme()
         theme_manager().themeChanged.connect(self.update_theme)
 
+        self.fontmetrics = QFontMetrics(self.font())
+
         # Set caret
         self.setCaretForegroundColor(QColor("#D4D4D4"))
 
@@ -49,10 +54,10 @@ def __init__(self, block: Block):
         self.SendScintilla(QsciScintilla.SCI_SETHSCROLLBAR, 0)
 
         # # Add folding
-        # self.setFolding(QsciScintilla.FoldStyle.CircledTreeFoldStyle, 1)
-        # self.setFoldMarginColors(background_color, background_color)
-        # self.setMarkerForegroundColor(foreground_color, 0)
-        # self.setMarkerBackgroundColor(background_color, 0)
+        self.setFolding(QsciScintilla.FoldStyle.CircledTreeFoldStyle, 1)
+        self.setFoldMarginColors(self.background_color, self.background_color)
+        self.setMarkerForegroundColor(self.foreground_color, 1)
+        self.setMarkerBackgroundColor(self.background_color, 1)
 
         # Add background transparency
         self.setStyleSheet("background:transparent")
@@ -68,14 +73,12 @@ def update_theme(self):
         self.setFont(font)
 
         # Margin 0 is used for line numbers
-        fontmetrics = QFontMetrics(font)
-        foreground_color = QColor("#dddddd")
-        background_color = QColor("#212121")
+        self.fontmetrics = QFontMetrics(self.font())
         self.setMarginsFont(font)
-        self.setMarginWidth(2, fontmetrics.width("00") + 6)
-        self.setMarginLineNumbers(2, True)
-        self.setMarginsForegroundColor(foreground_color)
-        self.setMarginsBackgroundColor(background_color)
+        self.setMarginWidth(0, self.fontmetrics.width("00") + 6)
+        self.setMarginLineNumbers(0, True)
+        self.setMarginsForegroundColor(self.foreground_color)
+        self.setMarginsBackgroundColor(self.background_color)
 
         lexer = QsciLexerPython()
         theme_manager().current_theme().apply_to_lexer(lexer)

pyflow/blocks/widgets/blocktitle.py

@@ -8,13 +8,16 @@
 """
 
 import time
-from typing import OrderedDict
+from typing import List, OrderedDict, TYPE_CHECKING
 from PyQt5.QtCore import Qt
 from PyQt5.QtGui import QFocusEvent, QFont, QMouseEvent
 from PyQt5.QtWidgets import QLineEdit, QWidget, QGraphicsItem
 
 from pyflow.core.serializable import Serializable
 
+if TYPE_CHECKING:
+    from pyflow.graphics.view import View
+
 
 class Title(QLineEdit, Serializable):
     """The title of an Block. Needs to be double clicked to interact."""
@@ -60,9 +63,11 @@ def readOnly(self, value: bool):
         self.setReadOnly(value)
 
         new_mode = "NOOP" if value else "EDITING"
-        views = self.parent_block.scene().views()
-        for view in views:
-            view.set_mode(new_mode)
+        scene = self.parent_block.scene()
+        if scene:
+            views: List["View"] = scene.views()
+            for view in views:
+                view.set_mode(new_mode)
 
     def mousePressEvent(self, event: QMouseEvent):
         """