from typing import Optional
import arcade
from arcade.gui.elements import UIClickable
from arcade.gui.ui_style import UIStyle
from arcade.gui.utils import get_text_image
[docs]class UILabel(UIClickable):
"""
:py:class:`arcade.gui.UIElement` for showing text.
"""
[docs] def __init__(self,
text: str,
center_x: int,
center_y: int,
width: int = 0,
align='center',
id: Optional[str] = None,
style: UIStyle = None,
**kwargs):
"""
:param text: Text to show
:param center_x: center X of element
:param center_y: center y of element
:param width: width, 0 will use the width of the rendered text
:param align: position of the text, requires a fix width
:param id: id of :py:class:`arcade.gui.UIElement`
:param style: style of :py:class:`arcade.gui.UIElement`
:param kwargs: catches unsupported named parameters
"""
super().__init__(
center_x=center_x,
center_y=center_y,
id=id,
style=style,
**kwargs
)
self.style_classes.append('label')
self._target_width = width
self.align = align
self.text = text
# self.render already implicitly called through setting text
@property
def text(self):
"""
Text of the label
"""
return self._text
@text.setter
def text(self, value):
self._text = value
self.render()
[docs] def render(self):
font_name = self.style_attr('font_name', ['Calibri', 'Arial'])
font_size = self.style_attr('font_size', 12)
font_color = self.style_attr('font_color', arcade.color.GRAY)
font_color_hover = self.style_attr('font_color_hover', None)
font_color_press = self.style_attr('font_color_press', None)
if font_color_hover is None:
font_color_hover = font_color
if font_color_press is None:
font_color_press = font_color_hover
text_image_normal = get_text_image(text=self.text,
font_color=font_color,
font_size=font_size,
font_name=font_name,
align=self.align,
width=int(self._target_width),
)
text_image_mouse_over = get_text_image(text=self.text,
font_color=font_color_hover,
font_size=font_size,
font_name=font_name,
align=self.align,
width=int(self._target_width),
)
text_image_mouse_press = get_text_image(text=self.text,
font_color=font_color_press,
font_size=font_size,
font_name=font_name,
align=self.align,
width=int(self._target_width),
)
self.normal_texture = arcade.Texture(image=text_image_normal, name=self.text + '1')
self.press_texture = arcade.Texture(image=text_image_mouse_press, name=self.text + '2')
self.hover_texture = arcade.Texture(image=text_image_mouse_over, name=self.text + '3')