When I type in MyFloatInput TextInput then text start from right side of TextInput,It's working perfect
but I set value of MyFloatInput TextInput from .py then it start from left side.It doesn't show in right side.
Can someone tell me what is wrong with code?
import kivy
from kivy.uix.screenmanager import Screen
from kivy.app import App
from kivy.lang import Builder
from kivy.core.window import Window
from kivy.clock import Clock
from kivy.uix.textinput import TextInput
Window.clearcolor = (0.5, 0.5, 0.5, 1)
Window.size = (400, 100)
class MyFloatInput(TextInput):
def __init__(self, **kwargs):
super(MyFloatInput, self).__init__(**kwargs)
self.multiline = False
def right_adjust(self, text):
max_width = self.width - self.padding[0] - self.padding[2]
new_text = text
text_width = self._get_text_width(new_text, self.tab_width, self._label_cached)
while text_width < max_width:
new_text = ' ' + new_text
text_width = self._get_text_width(new_text, self.tab_width, self._label_cached)
while text_width >= max_width:
if new_text[0] != ' ':
break
else:
new_text = new_text[1:]
text_width = self._get_text_width(new_text, self.tab_width, self._label_cached)
return new_text
def delete_selection(self, from_undo=False):
if not self._selection:
return
cr = self.cursor[1]
initial_len = len(self._lines[cr])
a, b = self._selection_from, self._selection_to
if a > b:
a, b = b, a
super(MyFloatInput, self).delete_selection(from_undo=from_undo)
cur_text = self._lines[cr]
super(MyFloatInput, self)._refresh_text(self.right_adjust(cur_text))
final_len = len(self._lines[cr])
self.cursor = self.get_cursor_from_index(final_len - (initial_len - b))
def do_backspace(self, from_undo=False, mode='bkspc'):
cc, cr = self.cursor
initial_len = len(self._lines[cr])
super(MyFloatInput, self).do_backspace(from_undo=from_undo, mode=mode)
cc, cr = self.cursor
cur_text = self._lines[cr]
super(MyFloatInput, self)._refresh_text(self.right_adjust(cur_text))
final_len = len(self._lines[cr])
self.cursor = self.get_cursor_from_index(final_len - (initial_len-cc) + 1)
def insert_text(self, the_text, from_undo=False):
cc, cr = self.cursor
cur_text = self._lines[cr]
initial_len = len(cur_text)
new_text = self.right_adjust(cur_text[:cc] + the_text + cur_text[cc:])
try:
num = float(new_text) # throw exception if new_text is invalid float
except ValueError:
return
self._lines[cr] = ''
super(MyFloatInput, self).insert_text(new_text, from_undo=from_undo)
final_len = len(self._lines[cr])
self.cursor = self.get_cursor_from_index(final_len - (initial_len-cc))
def set_right_adj_text(self, text):
num = float(text) # throws exception if text is invalid float
self._refresh_text(self.right_adjust(text))
def on_text(self, instance, text):
#num = float(text) # throws exception if text is invalid float
self._refresh_text(self.right_adjust(text))
class Testing(Screen):
def __init__(self, **kwargs):
super(Testing, self).__init__(**kwargs)
Clock.schedule_once(lambda dt: setattr(self.test, 'text', str(100)))
class Test(App):
def build(self):
self.root = Builder.load_file('test.kv')
return self.root
if __name__ == '__main__':
Test().run()
Testing:
test:test
BoxLayout:
orientation: "vertical"
padding : 20, 20
BoxLayout:
orientation: "horizontal"
padding: 10, 10
spacing: 10, 10
size_hint_x: .6
Label:
text: "No."
text_size: self.size
valign: 'middle'
size_hint_x: .2
MyFloatInput:
size_hint_x: .6
id : test
I made significant changes to the MyFloatInput class. It now no longer needs the string import. It now handles deleting a selection, and you can now set the text from a .py file using the set_right_adj_text("some text") method. Here is the improved class:
class MyFloatInput(TextInput):
def __init__(self, **kwargs):
super(MyFloatInput, self).__init__(**kwargs)
self.multiline = False
def right_adjust(self, text):
max_width = self.width - self.padding[0] - self.padding[2]
new_text = text
text_width = self._get_text_width(new_text, self.tab_width, self._label_cached)
while text_width < max_width:
new_text = ' ' + new_text
text_width = self._get_text_width(new_text, self.tab_width, self._label_cached)
while text_width >= max_width:
if new_text[0] != ' ':
break
else:
new_text = new_text[1:]
text_width = self._get_text_width(new_text, self.tab_width, self._label_cached)
return new_text
def on_size(self, instance, value):
super(MyFloatInput, self).on_size(instance, value)
if len(self._lines) == 0:
return True
cc, cr = self.cursor
cur_text = self._lines[cr]
initial_len = len(cur_text)
super(MyFloatInput, self)._refresh_text(self.right_adjust(cur_text))
final_len = len(self._lines[cr])
self.cursor = self.get_cursor_from_index(final_len - (initial_len - cc))
return True
def delete_selection(self, from_undo=False):
if not self._selection:
return
cr = self.cursor[1]
initial_len = len(self._lines[cr])
a, b = self._selection_from, self._selection_to
if a > b:
a, b = b, a
super(MyFloatInput, self).delete_selection(from_undo=from_undo)
cur_text = self._lines[cr]
super(MyFloatInput, self)._refresh_text(self.right_adjust(cur_text))
final_len = len(self._lines[cr])
self.cursor = self.get_cursor_from_index(final_len - (initial_len - b))
def do_backspace(self, from_undo=False, mode='bkspc'):
cc, cr = self.cursor
initial_len = len(self._lines[cr])
super(MyFloatInput, self).do_backspace(from_undo=from_undo, mode=mode)
cc, cr = self.cursor
cur_text = self._lines[cr]
super(MyFloatInput, self)._refresh_text(self.right_adjust(cur_text))
final_len = len(self._lines[cr])
self.cursor = self.get_cursor_from_index(final_len - (initial_len-cc) + 1)
def insert_text(self, the_text, from_undo=False):
cc, cr = self.cursor
cur_text = self._lines[cr]
initial_len = len(cur_text)
new_text = self.right_adjust(cur_text[:cc] + the_text + cur_text[cc:])
try:
num = float(new_text) # throw exception if new_text is invalid float
except ValueError:
return
self._lines[cr] = ''
super(MyFloatInput, self).insert_text(new_text, from_undo=from_undo)
final_len = len(self._lines[cr])
self.cursor = self.get_cursor_from_index(final_len - (initial_len-cc))
def set_right_adj_text(self, text):
num = float(text) # throws exception if text is invalid float
self._refresh_text(self.right_adjust(text))