redirect_console_output.py

redirect_console_output.py

import ui
import sys


class TextViewFile(object):
    def __init__(self, textview):
        self.textview = textview
        
    def write(self, msg):
        self.textview.text += msg
        scroll()

backup_stdout = None


def button_action(sender):
    print(sender.title + ' pressed')
    
def segmentedcontrol_action(sender):
    global backup_stdout
    
    if sender.selected_index == 1:
        if not backup_stdout:
            backup_stdout = sys.stdout
            sys.stdout = textview_stdout
    else:
        if backup_stdout:
            sys.stdout = backup_stdout
            backup_stdout = None
    
class CloseView(ui.View):
    def __init__(self):
        super().__init__()
        
    def will_close(self):
        global backup_stdout
        
        sys.stdout = backup_stdout
        backup_stdout = None
        
v = ui.load_view()
v['textview1'].text = '''
****************
Button press events
are logged in console
or TextView based on
respective tab
selection
*****************
'''
textview_stdout = TextViewFile(v['textview1'])
v['segmentedcontrol1'].selected_index = 0
v['segmentedcontrol1'].action = segmentedcontrol_action

@ui.in_background
def scroll():
    v['textview1'].content_offset = (0, v['textview1'].content_size[1] -v['textview1'].height) 

clv = CloseView()
clv.width, clv.height = v.width, v.height
clv.add_subview(v)
    
clv.present('sheet')

redirect_console_output.pyui

[
  {
    "class" : "View",
    "attributes" : {
      "background_color" : "RGBA(1.000000,1.000000,1.000000,1.000000)",
      "tint_color" : "RGBA(0.000000,0.478000,1.000000,1.000000)",
      "enabled" : true,
      "border_color" : "RGBA(0.000000,0.000000,0.000000,1.000000)",
      "flex" : ""
    },
    "frame" : "{{0, 0}, {451, 300}}",
    "selected" : false,
    "nodes" : [
      {
        "class" : "Button",
        "attributes" : {
          "font_size" : 15,
          "title" : "Button1",
          "name" : "button1",
          "action" : "button_action",
          "class" : "Button",
          "frame" : "{{80, 104}, {80, 32}}",
          "uuid" : "5C1173E2-1C48-4FC7-AED9-2256DCBADDA4"
        },
        "frame" : "{{56, 220}, {141, 52}}",
        "selected" : false,
        "nodes" : [

        ]
      },
      {
        "class" : "TextView",
        "attributes" : {
          "font_size" : 17,
          "font_name" : "<System>",
          "flex" : "WH",
          "autocorrection_type" : "default",
          "name" : "textview1",
          "spellchecking_type" : "default",
          "class" : "TextView",
          "alignment" : "left",
          "frame" : "{{20, 20}, {200, 200}}",
          "editable" : false,
          "uuid" : "4B000022-3FCC-40CE-A1B8-56F8ED7C996F"
        },
        "frame" : "{{279, 77}, {152, 195}}",
        "selected" : false,
        "nodes" : [

        ]
      },
      {
        "class" : "Button",
        "attributes" : {
          "font_size" : 15,
          "title" : "Button2",
          "name" : "button2",
          "action" : "button_action",
          "class" : "Button",
          "frame" : "{{186, 134}, {80, 32}}",
          "uuid" : "822A696E-6FB8-4421-8BFC-C8C6B63B6EC2"
        },
        "frame" : "{{56, 105}, {135, 58}}",
        "selected" : true,
        "nodes" : [

        ]
      },
      {
        "class" : "SegmentedControl",
        "attributes" : {
          "class" : "SegmentedControl",
          "name" : "segmentedcontrol1",
          "frame" : "{{166, 136}, {120, 29}}",
          "uuid" : "384FC3D2-00A5-41AC-9B07-507B8DBD0150",
          "segments" : "console|textview",
          "flex" : "LR"
        },
        "frame" : "{{24, 26}, {407, 28}}",
        "selected" : false,
        "nodes" : [

        ]
      }
    ]
  }
]

fixed bugs related to scrolling and sys.stdout not reverted back while closing