- trying to improve the performance of View CNC Code command by using QPlainTextEdit; made the mods for it

- when using the Find function in the TextEditor and the result reach the bottom of the document, the next find will be the first in the document (before it defaulted to the beginning of the document)

FlatCAMObj.py

@@ -6099,7 +6099,7 @@ class FlatCAMCNCjob(FlatCAMObj, CNCjob):
         else:
             self.app.gcode_edited = gco
 
-        self.gcode_editor_tab = TextEditor(app=self.app)
+        self.gcode_editor_tab = TextEditor(app=self.app, plain_text=True)
 
         # add the tab if it was closed
         self.app.ui.plot_tab_area.addTab(self.gcode_editor_tab, '%s' % _("Code Editor"))
@@ -6129,8 +6129,7 @@ class FlatCAMCNCjob(FlatCAMObj, CNCjob):
                 self.gcode_editor_tab.code_editor.append(proc_line)
         except Exception as e:
             log.debug('FlatCAMCNNJob.on_edit_code_click() -->%s' % str(e))
-            self.app.inform.emit('[ERROR] %s %s' %
-                                 ('FlatCAMCNNJob.on_edit_code_click() -->', str(e)))
+            self.app.inform.emit('[ERROR] %s %s' % ('FlatCAMCNNJob.on_edit_code_click() -->', str(e)))
             return
 
         self.gcode_editor_tab.code_editor.moveCursor(QtGui.QTextCursor.Start)
@@ -6328,8 +6327,7 @@ class FlatCAMCNCjob(FlatCAMObj, CNCjob):
 
             # if it did not find 'G20' and it did not find 'G21' then there is an error and return
             if g_idx == -1:
-                self.app.inform.emit('[ERROR_NOTCL] %s' %
-                                     _("G-code does not have a units code: either G20 or G21"))
+                self.app.inform.emit('[ERROR_NOTCL] %s' % _("G-code does not have a units code: either G20 or G21"))
                 return
 
             footer = self.app.defaults['cncjob_footer']