I'm using MDTextFieldHintText inside an MDTextField, but I can't change the MDTextFieldHintText font_size when it's nested. When I use MDTextFieldHintText outside of MDTextField, the font_size works as expected.
The reason I'm trying to set a specific dp value is that when the user changes the system font size on their phone, the hint text gets distorted or doesn't properly fit within the MDTextField bounds.
Does anyone have an idea or workaround for this issue?
from kivymd.app import MDApp
from kivy.lang import Builder
from kivymd.uix.textfield import MDTextField, MDTextFieldHintText
from kivy.metrics import dp
KV = """
MDScreen:
md_bg_color: self.theme_cls.backgroundColor
MDTextFieldHintText:
text: "font_size works here..."
theme_font_size: "Custom"
font_size: "40dp"
MDTextField:
mode: "outlined"
theme_font_size: "Custom"
font_size: "50dp"
MDTextFieldHintText:
text: "...but font_size doesn't work here"
theme_font_size: "Custom"
font_size: "40dp"
"""
class MainApp(MDApp):
def build(self):
self.theme_cls.theme_style = "Light"
screen = Builder.load_string(KV)
return screen
MainApp().run()
(Kivy==2.3.1, KivyMD==development version from master branch)
Solution I found:
By subclassing both MDTextField and MDTextFieldHintText, I was able to manually control the font size in dp, and adjust the vertical positioning using set_pos_hint_text.
from kivymd.app import MDApp
from kivy.lang import Builder
from kivymd.uix.textfield import MDTextField, MDTextFieldHintText
from kivy.metrics import dp
KV = """
MDScreen:
md_bg_color: self.theme_cls.backgroundColor
CustomMDTextField:
mode: "outlined"
theme_font_size: "Custom"
font_size: "20dp"
CustomMDTextFieldHintText:
text: "Font size for HintText is 12dp"
"""
class CustomMDTextField(MDTextField):
# Adjust Y-position of hint text (optional)
def set_pos_hint_text(self, y, anim):
super().set_pos_hint_text(y + dp(-5), anim)
class CustomMDTextFieldHintText(MDTextFieldHintText):
# Override default font size in dp
font_size = dp(12)
class MainApp(MDApp):
def build(self):
self.theme_cls.theme_style = "Light"
screen = Builder.load_string(KV)
return screen
MainApp().run()
