def set_stage2(self):
# Update image title
self.ref_object_var.set("Selected Reference Object")
# Update instructions
self.instructions_var.set(
"Now please tell us how long is the dimension given by the pink line in the image.\n"
"Provide the most decimals for more accurate results!")
# Hide stage 1
for (widget, grid_command) in self.stage1_widgets:
widget.grid_forget()
# Show stage 2
for (widget, grid_command) in self.stage2_widgets:
grid_command()
# Update responsive image
if self.responsive_image is not None:
self.responsive_image.grid(row=1,
column=0,
rowspan=8,
columnspan=3,
sticky=NSEW,
pady=20)
# Update responsive
reset_both_responsive(self)
make_columns_responsive(self, ignored=[0, 1])
make_rows_responsive(self, ignored=[0, 2, 3, 4, 5, 6, 7])
def set_stage1(self):
current = self.current_contour_var.get()
# Update image title
self.ref_object_var.set("Object #" + str(current + 1))
# Update instructions
self.instructions_var.set(
"Choose an object for which you know its width or height.\n"
"This will allow to calculate the real dimensions of the bamboo slice."
)
# Hide stage 2
for (widget, grid_command) in self.stage2_widgets:
widget.grid_forget()
# Hide invalid message
self.invalid_dimension.grid_forget()
# Show stage 1
for (widget, grid_command) in self.stage1_widgets:
grid_command()
# Update responsive image
if self.responsive_image is not None:
self.responsive_image.grid(row=1,
column=0,
rowspan=2,
columnspan=3,
sticky=NSEW,
pady=20)
# Update responsive
reset_both_responsive(self)
make_columns_responsive(self, ignored=[1, 2])
make_rows_responsive(self, ignored=[0])
def initialize_widgets(self):
# Watchers
# Update captured count
self.count_str = StringVar()
self.count_number = IntVar()
self.count_number.trace("w", self.update_count_label)
# Status message
self.status_var = StringVar()
self.status_message = Label(self, textvariable=self.status_var, font=self.controller.header_font, relief=GROOVE,
padx=10, pady=10)
self.status_message.grid(row=0, column=0, sticky=EW, padx=40, pady=20)
# Table headers
top_headers = ["Sensor #", "Current\nreading", "Last\ncaptured\nvalue", "Last\ndeviation"]
self.table_headers = VerticalTable(self, rows=1, columns=len(top_headers))
self.table_headers.update_cells(top_headers)
self.table_headers.grid(row=1, column=0, sticky=S)
# column indexes
self.live_column = 0
self.captured_column = 1
self.deviation_column = 2
# Sensor Data: current readings, last captured, and deviation info
sensor_headers = ["1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "Sensor Z"]
self.table = HorizontalTable(self, rows=len(sensor_headers), columns=3, header_values=sensor_headers)
self.table.grid(row=2, column=0, rowspan=2, sticky=N)
# calibrate button
self.calibrate_button = GreenButton(self, text="Calibrate Sensors", command=self.calibrate)
self.calibrate_button.grid(row=0, column=1, pady=20)
# captured count
self.captured_count = Label(self, textvariable=self.count_str, font=self.controller.bold_font)
self.captured_count.grid(row=2, column=1, sticky=S, pady=10)
# capture button
self.capture_button = YellowButton(self, text="Capture Measurements", command=self.capture)
self.capture_button.grid(row=3, column=1, sticky=N)
# view results button
self.results_button = GreenButton(self, text="View Results", command=self.view_results,
image=self.controller.arrow_right, compound=RIGHT)
self.results_button.grid(row=4, column=1, sticky=SE, padx=20, pady=20)
make_rows_responsive(self)
make_columns_responsive(self)
def initialize_widgets(self):
# Watchers
# on image path change
self.image_path = StringVar()
self.image_path.trace("w", self.on_image_path_change)
# responsive image container
self.placeholder_image = Image.open("assets/placeholder_image.png")
self.responsive_image = ResponsiveImage(self, self.placeholder_image)
self.responsive_image.grid(row=0, column=0, rowspan=4)
# choose image button
self.choose_button = GreenButton(self,
text="Choose an image",
command=self.load_image)
self.choose_button.grid(row=0, column=1, sticky=S)
# selected image path
self.path_entry = Entry(self,
textvariable=self.image_path,
state="readonly")
self.path_entry.grid(row=1, column=1, sticky=EW, padx=20)
# status message in row 2
self.message_var = StringVar()
self.message = Label(self,
textvariable=self.message_var,
font=self.controller.header_font)
# begin button
self.begin_button = YellowButton(self,
text="BEGIN",
command=self.begin,
image=self.controller.arrow_right,
compound=RIGHT)
self.begin_button.grid(row=3, column=1, sticky=SE, padx=20, pady=20)
# Update widgets
self.on_image_path_change()
# visited flag
self.visit_counter = 0
make_rows_responsive(self)
make_columns_responsive(self)
def initialize_widgets(self):
# Result image row=0, col=0, columnspan=2
# Save button
self.save_button = YellowButton(self, text="Save coordinates", command=self.save, image=self.controller.save_icon,
compound=LEFT)
self.save_button.grid(row=2, column=0, sticky=E, padx=10, pady=20)
# Discard button
self.discard_button = RedButton(self, text="DISCARD", command=self.discard)
self.discard_button.grid(row=2, column=1, sticky=W, padx=10, pady=20)
# min size of buttons row
self.grid_rowconfigure(2, minsize=80)
make_rows_responsive(self, ignored=[0])
make_columns_responsive(self)
def __init__(self, parent, controller):
Frame.__init__(self, parent)
self.controller = controller
self.bind("<<ShowFrame>>", self.on_show_frame)
# Bamboo Scanner logo
logo_image = ImageTk.PhotoImage(Image.open("assets/logo.png"))
self.logo = Label(self, image=logo_image)
self.logo.image = logo_image
self.logo.grid(row=0, columnspan=2, sticky=S)
# Buttons font
buttons_font = font.Font(family="Segoe UI Emoji", size=26)
# BPC
self.bpc_button = GreenButton(self,
text="Pole",
command=self.open_bpc,
font=buttons_font)
self.bpc_button.grid(row=1, column=0, sticky=S)
self.bpc_description = Label(
self,
fg="#333333",
text="Measure the external surface\n of a bamboo pole")
self.bpc_description.grid(row=2, column=0, rowspan=2, sticky=N)
# BSC
self.bsc_button = GreenButton(self,
text="Slice",
command=self.open_bsc,
font=buttons_font)
self.bsc_button.grid(row=1, column=1, sticky=S)
self.bsc_description = Label(
self,
fg="#333333",
text=
"Measure the inner and outer\n circumferences of a\n bamboo cross section"
)
self.bsc_description.grid(row=2, column=1, rowspan=3, sticky=N)
make_rows_responsive(self)
make_columns_responsive(self)
def __init__(self, parent, controller):
Frame.__init__(self, parent)
self.controller = controller
self.bind("<<ShowFrame>>", self.on_show_frame)
# Bamboo Scanner logo
logo_image = ImageTk.PhotoImage(Image.open("assets/logo.png"))
self.logo = Label(self, image=logo_image)
self.logo.image = logo_image
self.logo.grid(row=0, columnspan=2, sticky=S)
# select a tool label
self.select_label = Label(self, text="Select a tool:", font=self.controller.important_font, fg="grey")
self.select_label.grid(row=1, column=0, columnspan=2, sticky=S)
# Buttons font
buttons_font = font.Font(family="Segoe UI Emoji", size=26)
# BPC
self.bpc_button = GreenButton(self, text="Pole", command=self.open_bpc, font=buttons_font)
self.bpc_button.grid(row=2, column=0, sticky=S)
self.bpc_description = Label(self, fg="#333333", text="Measure the external surface\n of a bamboo pole")
self.bpc_description.grid(row=3, column=0, rowspan=2, sticky=N)
# BSC
self.bsc_button = GreenButton(self, text="Slice", command=self.open_bsc, font=buttons_font)
self.bsc_button.grid(row=2, column=1, sticky=S)
self.bsc_description = Label(self, fg="#333333",
text="Measure the inner and outer\n circumferences of a\n bamboo cross section")
self.bsc_description.grid(row=3, column=1, rowspan=3, sticky=N)
# guide link
self.guide_button = Button(self, text="First time? Open tutorial", relief=FLAT, command=self.open_guide,
fg="blue", font=self.controller.underlined_font)
self.guide_button.grid(row=4, columnspan=2)
make_rows_responsive(self)
make_columns_responsive(self)
def initialize_widgets(self):
# Empty message
self.empty_message = Label(
self,
text="Nothing to see here. Go capture some measurements!",
font=self.controller.header_font)
# Save button
self.save_button = YellowButton(self,
text="Save coordinates",
command=self.save,
image=self.controller.save_icon,
compound=LEFT)
self.save_button.grid(row=1, column=0, sticky=SE, padx=10, pady=20)
# Discard button
self.discard_button = RedButton(self,
text="DISCARD",
command=self.discard)
self.discard_button.grid(row=1, column=1, sticky=SW, padx=10, pady=20)
make_rows_responsive(self)
make_columns_responsive(self)
def initialize_widgets(self):
# a canvas with scrollbars; the results table goes in it
h_scrollbar = AutoScrollbar(self, orient=HORIZONTAL)
h_scrollbar.grid(row=1, column=0, columnspan=2, sticky=EW)
v_scrollbar = AutoScrollbar(self)
v_scrollbar.grid(row=0, column=2, sticky=NS)
self.canvas = Canvas(self,
xscrollcommand=h_scrollbar.set,
yscrollcommand=v_scrollbar.set)
h_scrollbar.config(command=self.canvas.xview)
v_scrollbar.config(command=self.canvas.yview)
# Empty message
self.empty_message = Label(
self,
text="Nothing to see here. Go capture some measurements!",
font=self.controller.header_font)
# Save button
self.save_button = YellowButton(self,
text="Save coordinates",
command=self.save,
image=self.controller.save_icon,
compound=LEFT)
self.save_button.grid(row=2, column=0, sticky=S, pady=20)
# Discard button
self.discard_button = RedButton(self,
text="DISCARD",
command=self.discard)
self.discard_button.grid(row=2, column=1, sticky=S, pady=20)
# responsive except the scrollbars and the buttons
make_rows_responsive(self, ignored=[1, 2])
make_columns_responsive(self, ignored=[2])
def initialize_widgets(self):
# Watchers
# Update state of navigation buttons
self.current_circumference_var = IntVar()
self.current_circumference_var.trace("w", self.update_navigation)
# Update count label
self.selected_count_var = IntVar()
self.selected_count_var.trace("w", self.update_count_text)
# Update buttons
self.selected_count_text = StringVar()
self.selected_count_text.trace("w", self.update_buttons)
# title of circumference image
self.circumference_title_var = StringVar()
self.circumference_title = Label(
self,
textvariable=self.circumference_title_var,
font=self.controller.header_font)
self.circumference_title.grid(row=0,
column=0,
sticky=W,
padx=20,
pady=20)
# Controls to navigate contours
self.prev_button = GreenButton(
self,
text="Previous",
image=self.controller.arrow_left,
compound=LEFT,
command=lambda: self.show_circumference(
self.current_circumference_var.get() - 1))
self.prev_button.grid(row=0, column=1, sticky=SE, padx=5, pady=20)
self.next_button = GreenButton(
self,
text="Next",
image=self.controller.arrow_right,
compound=RIGHT,
command=lambda: self.show_circumference(
self.current_circumference_var.get() + 1))
self.next_button.grid(row=0, column=2, sticky=SW, pady=20)
# image in row=1, col=0, colspan=3, rowspan=4
# instructions
instructions_text = "More than 2 circumferences were found.\n"
instructions_text += "Select the inner and outer circumference of the bamboo slice."
self.instructions = Label(self,
text=instructions_text,
relief=GROOVE,
padx=10,
pady=10)
self.instructions.grid(row=1, column=3, padx=40)
# remove button
self.remove_button = RedButton(self,
text="Deselect circumference",
command=self.deselect)
self.remove_button.grid(row=2, column=3)
# select button
self.select_button = YellowButton(self,
text="Use this circumference",
command=self.select)
self.select_button.grid(row=2, column=3)
# Selection count
self.selected_count = Label(self,
textvariable=self.selected_count_text,
font=self.controller.important_font)
self.selected_count.grid(row=3, column=3, sticky=N)
# confirm button
self.confirm_button = YellowButton(self,
text="CONFIRM",
command=self.confirm,
state=DISABLED,
cursor="arrow")
self.confirm_button.grid(row=4, column=3, sticky=SE, padx=20, pady=20)
make_columns_responsive(self, ignored=[1, 2])
make_rows_responsive(self, ignored=[0])
def initialize_widgets(self):
# CALIBRATION
# Ring diameter entry value
self.ring_diameter_var = StringVar()
self.ring_diameter_var.trace("w", self.update_begin_button)
# Calibration object value
self.calibration_object_var = StringVar()
self.calibration_object_var.trace("w", self.update_begin_button)
# Distance to end of rail value
self.distance_z_var = StringVar()
self.distance_z_var.trace("w", self.update_begin_button)
# %d = Type of action (1=insert, 0=delete, -1 for others)
# %P = value of the entry if the edit is allowed
# %S = the text string being inserted or deleted, if any
validate_cmd = (self.register(self.validate_dimension), '%d', '%P',
'%S')
# Calibration settings group
self.calibration_settings = LabelFrame(
self,
text="Calibration Settings",
fg="grey",
padx=20,
pady=20,
font=self.controller.header_font)
self.calibration_settings.grid(row=0,
column=0,
sticky=NS + W,
padx=20,
pady=20)
# Ring diameter
self.ring_diameter_label = Label(self.calibration_settings,
text="Ring structure diameter",
anchor=SW,
font=self.controller.bold_font)
self.ring_diameter_label.grid(row=0, column=0, sticky=SW, padx=20)
self.ring_diameter_entry = EntryWithPlaceholder(
self.calibration_settings,
text_var=self.ring_diameter_var,
placeholder_text="0.00",
validatecommand=validate_cmd,
validate="key",
textvariable=self.ring_diameter_var)
self.ring_diameter_entry.grid(row=1,
column=0,
sticky=NW,
padx=20,
pady=20)
# Calibration object
self.calibration_object_label = Label(self.calibration_settings,
text="Calibration object radius",
font=self.controller.bold_font,
anchor=SW)
self.calibration_object_label.grid(row=0, column=1, sticky=SW, padx=20)
self.calibration_object_entry = EntryWithPlaceholder(
self.calibration_settings,
text_var=self.calibration_object_var,
placeholder_text="0.00",
validatecommand=validate_cmd,
textvariable=self.calibration_object_var,
validate="key")
self.calibration_object_entry.grid(row=1,
column=1,
sticky=NW,
padx=20,
pady=20)
# Distance to flat surface at end of rail
self.distance_z_label = Label(self.calibration_settings,
text="Distance to the end of the rail",
anchor=SW,
font=self.controller.bold_font)
self.distance_z_label.grid(row=2, column=0, sticky=SW, padx=20)
self.distance_z_entry = EntryWithPlaceholder(
self.calibration_settings,
text_var=self.distance_z_var,
placeholder_text="0.00",
validate="key",
validatecommand=validate_cmd,
textvariable=self.distance_z_var)
self.distance_z_entry.grid(row=3,
column=0,
sticky=NW,
padx=20,
pady=20)
# Invalid dimension message
self.invalid_dimension = Label(
self.calibration_settings,
text="Dimension must be between 1 and 28 centimeters",
fg="red",
anchor=W)
# make calibration section responsive
make_columns_responsive(self.calibration_settings)
make_rows_responsive(self.calibration_settings)
# description label
self.description_label = Label(
self,
text="Information about the sample (optional)",
font=self.controller.bold_font)
self.description_label.grid(row=1,
column=0,
sticky=SW,
padx=20,
pady=20)
# Description text area
self.text_area = ScrollableTextArea(self)
self.text_area.grid(row=2, column=0, sticky=NW, padx=20)
# begin button
self.begin_button = YellowButton(self,
text="BEGIN",
command=self.begin,
image=self.controller.arrow_right,
compound=RIGHT)
self.begin_button.grid(row=3, column=0, sticky=SE, padx=20, pady=20)
# set placeholders
self.ring_diameter_entry.set_placeholder()
self.calibration_object_entry.set_placeholder()
self.distance_z_entry.set_placeholder()
make_rows_responsive(self)
make_columns_responsive(self)
def __init__(self):
Tk.__init__(self)
# START SHARED
# Global fonts
self.global_font_family = font.Font(family="Segoe UI Emoji")
self.common_font = font.Font(family="Segoe UI Emoji", size=14)
self.bold_font = font.Font(family="Segoe UI Emoji",
size=13,
weight="bold")
self.header_font = font.Font(family="Segoe UI Emoji",
size=16,
weight="bold")
self.title_font = font.Font(family="Segoe UI Emoji",
size=28,
weight="bold")
self.important_font = font.Font(family="Segoe UI Emoji",
size=28,
weight="bold",
underline=True)
# update widget fonts
self.option_add("*Font", self.global_font_family)
self.option_add("*Button.Font", self.bold_font)
self.option_add("*Label.Font", self.common_font)
# Common images
self.arrow_left = ImageTk.PhotoImage(
Image.open("assets/arrow_left.png"))
self.arrow_right = ImageTk.PhotoImage(
Image.open("assets/arrow_right.png"))
self.save_icon = ImageTk.PhotoImage(Image.open("assets/save.png"))
# END SHARED
# Main page layout: hosts page content and global widgets
self.container = Frame(self)
# Container fills the entire window
self.container.pack(side=TOP, fill=BOTH, expand=True)
# Navigation bar
self.navbar = Frame(self.container, bg="#35AD35")
self.navbar.grid(row=0, columnspan=2, sticky=NSEW)
# Home button
home_image = Image.open("assets/home.png")
# resize home button image
home_image = resize_keep_aspect(home_image, max_w=100, max_h=37)
home_image = ImageTk.PhotoImage(home_image)
self.home_button = Label(self.navbar,
image=home_image,
cursor="hand2",
text="Home")
self.home_button.image = home_image
self.home_button.grid(row=0, column=0, sticky=NSEW)
# bind to click event
self.home_button.bind("<Button-1>", self.go_home)
self.home_button.bind("<Enter>", self.on_enter_home_btn)
self.home_button.bind("<Leave>", self.on_leave_home_btn)
# Back button
self.back_button = Button(self.navbar,
image=self.arrow_left,
cursor="hand2",
text="Go back",
compound=LEFT,
command=self.go_back,
bg="#35AD35",
fg="#FFFFFF",
relief=GROOVE,
padx=10)
self.back_button.grid(row=0, column=1, sticky=NSEW)
# Page title
self.title_var = StringVar()
self.page_title = Label(self.navbar,
textvariable=self.title_var,
bg="#35AD35",
fg="#FFFFFF",
font=self.title_font)
self.page_title.grid(row=0, column=2, sticky=W + E, padx=10)
# Step indicator
self.step = StringVar()
self.page_step = Label(self.navbar,
textvariable=self.step,
bg="#35AD35",
fg="#FFFFFF")
self.page_step.grid(row=0, column=3, sticky=E, padx=10)
# only the page title is responsive
make_columns_responsive(self.navbar, ignored=[0, 1, 3])
# Bamboo decor on left side of screen
bamboo_image = Image.open("assets/bamboo.png")
self.bamboo = ResponsiveImage(self.container,
bamboo_image,
tag="bamboo",
anchor=NW)
self.bamboo.grid(row=1, column=0, sticky=NSEW)
# The class names for both BSC and BPC
self.bsc_pages = (ConfigBSC, PickCircumferencesBSC, RefObjectBSC,
ResultsBSC)
self.bpc_pages = (ConfigBPC, MeasureBPC, ResultsBPC)
# Initialize all pages and keep their references accessible
self.frames = {}
for F in (() + (Home, ) + self.bsc_pages + self.bpc_pages):
page_name = F.__name__
frame = F(parent=self.container, controller=self)
self.frames[page_name] = frame
# Add all frames to the container, on top of each other
frame.grid(row=1, column=1, sticky=NSEW)
# make the window responsive, except the navbar row
make_rows_responsive(self.container, ignored=[0])
make_columns_responsive(self.container)
# Start on the home page
self.active_frame = None
self.show_frame("Home")
def initialize_widgets(self):
# CALIBRATION
# Ring diameter entry value
self.ring_diameter_var = StringVar()
self.ring_diameter_var.trace("w", self.update_begin_button)
# Calibration object value
self.calibration_object_var = StringVar()
self.calibration_object_var.trace("w", self.update_begin_button)
# Distance to end of rail value
self.distance_z_var = StringVar()
self.distance_z_var.trace("w", self.update_begin_button)
# %d = Type of action (1=insert, 0=delete, -1 for others)
# %P = value of the entry if the edit is allowed
# %S = the text string being inserted or deleted, if any
# %W = the name of the widget
validate_cmd = (self.register(self.validate_calibration_settings), '%d', '%P', '%S', '%W')
# Calibration settings group
self.calibration_settings = LabelFrame(self, text="Calibration Settings (all measures in centimeters)",
fg="grey", padx=20, pady=20, font=self.controller.header_font)
self.calibration_settings.grid(row=0, column=0, sticky=NSEW, padx=20, pady=20)
# Ring diameter
self.ring_diameter_label = Label(self.calibration_settings, text="Ring structure diameter", anchor=SW,
font=self.controller.bold_font)
self.ring_diameter_label.grid(row=0, column=0, sticky=SW, padx=20)
# ring diameter range
self.range_ring_diameter = Label(self.calibration_settings, text="[Valid range: 10 - 30]", fg="grey", anchor=SW,
font=self.controller.small_font)
self.range_ring_diameter.grid(row=1, column=0, sticky=NW, padx=20)
self.ring_diameter_entry = EntryWithPlaceholder(self.calibration_settings, text_var=self.ring_diameter_var,
placeholder_text="0.00", validatecommand=validate_cmd,
validate="key", textvariable=self.ring_diameter_var,
name="ring")
self.ring_diameter_entry.grid(row=2, column=0, sticky=NW, padx=20, pady=20)
# Calibration object
self.calibration_object_label = Label(self.calibration_settings, text="Calibration object diameter",
font=self.controller.bold_font, anchor=SW)
self.calibration_object_label.grid(row=0, column=1, sticky=SW, padx=20)
# calibration object diameter range
self.range_calibration_obj_diameter = Label(self.calibration_settings, text="[Valid range: 2 - 26]", fg="grey",
anchor=NW, font=self.controller.small_font)
self.range_calibration_obj_diameter.grid(row=1, column=1, sticky=NW, padx=20)
self.calibration_object_entry = EntryWithPlaceholder(self.calibration_settings, text_var=self.calibration_object_var,
placeholder_text="0.00", validatecommand=validate_cmd,
textvariable=self.calibration_object_var, validate="key",
name="calibration_obj")
self.calibration_object_entry.grid(row=2, column=1, sticky=NW, padx=20, pady=20)
# Distance to flat surface at end of rail
self.distance_z_label = Label(self.calibration_settings, text="Distance to the end of the rail", anchor=SW,
font = self.controller.bold_font)
self.distance_z_label.grid(row=3, column=0, sticky=SW, padx=20)
# z distance range
self.range_z_distance = Label(self.calibration_settings, text="[Valid range: 15.24 - 645]", fg="grey", anchor=NW,
font=self.controller.small_font)
self.range_z_distance.grid(row=4, column=0, sticky=NW, padx=20)
self.distance_z_entry = EntryWithPlaceholder(self.calibration_settings, text_var=self.distance_z_var,
placeholder_text="0.00", validate="key", name="z_distance",
validatecommand=validate_cmd, textvariable=self.distance_z_var)
self.distance_z_entry.grid(row=5, column=0, sticky=NW, padx=20, pady=20)
# calibration object diameter greater than ring diameter
self.calibration_obj_greater_ring = Label(self.calibration_settings,
text="The calibration object's diameter\ncan't be greater than the ring diameter",
fg="red", anchor=NW)
# make calibration section responsive
make_columns_responsive(self.calibration_settings)
make_rows_responsive(self.calibration_settings)
# description label
self.description_label = Label(self, text="Information about the bamboo sample (optional)",
font=self.controller.bold_font)
self.description_label.grid(row=1, column=0, sticky=SW, padx=20, pady=20)
# Description text area
self.text_area = ScrollableTextArea(self)
self.text_area.grid(row=2, column=0, sticky=NW, padx=20)
# begin button
self.begin_button = YellowButton(self, text="BEGIN", command=self.begin,
image=self.controller.arrow_right, compound=RIGHT)
self.begin_button.grid(row=3, column=0, sticky=SE, padx=20, pady=20)
# set placeholders
self.ring_diameter_entry.set_placeholder()
self.calibration_object_entry.set_placeholder()
self.distance_z_entry.set_placeholder()
make_rows_responsive(self)
make_columns_responsive(self)
# min size of buttons row
self.grid_rowconfigure(3, minsize=80)