222 lines
10 KiB
Python
222 lines
10 KiB
Python
import tkinter
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from typing import Union, Tuple, Callable
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from .core_rendering.ctk_canvas import CTkCanvas
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from .theme.theme_manager import ThemeManager
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from .core_rendering.draw_engine import DrawEngine
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from .core_widget_classes.widget_base_class import CTkBaseClass
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from .font.ctk_font import CTkFont
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from customtkinter.utility.utility_functions import pop_from_dict_by_set, check_kwargs_empty
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class CTkLabel(CTkBaseClass):
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"""
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Label with rounded corners. Default is fg_color=None (transparent fg_color).
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For detailed information check out the documentation.
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"""
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# attributes that are passed to and managed by the tkinter entry only:
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_valid_tk_label_attributes = {"compound", "cursor", "image", "justify", "padx", "pady",
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"textvariable", "state", "takefocus", "underline", "wraplength"}
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def __init__(self,
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master: any = None,
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width: int = 140,
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height: int = 28,
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corner_radius: Union[int, str] = "default_theme",
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bg_color: Union[str, Tuple[str, str], None] = None,
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fg_color: Union[str, Tuple[str, str], None] = "default_theme",
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text_color: Union[str, Tuple[str, str]] = "default_theme",
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text: str = "CTkLabel",
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font: Union[tuple, CTkFont] = "default_theme",
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anchor: str = "center", # label anchor: center, n, e, s, w
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**kwargs):
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# transfer basic functionality (_bg_color, size, _appearance_mode, scaling) to CTkBaseClass
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super().__init__(master=master, bg_color=bg_color, width=width, height=height)
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# color
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self._fg_color = ThemeManager.theme["color"]["label"] if fg_color == "default_theme" else fg_color
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self._text_color = ThemeManager.theme["color"]["text"] if text_color == "default_theme" else text_color
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# shape
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self._corner_radius = ThemeManager.theme["shape"]["label_corner_radius"] if corner_radius == "default_theme" else corner_radius
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# text
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self._anchor = anchor
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self._text = text
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# font
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self._font = CTkFont() if font == "default_theme" else self._check_font_type(font)
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if isinstance(self._font, CTkFont):
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self._font.add_size_configure_callback(self._update_font)
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# configure grid system (1x1)
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self.grid_rowconfigure(0, weight=1)
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self.grid_columnconfigure(0, weight=1)
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self._canvas = CTkCanvas(master=self,
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highlightthickness=0,
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width=self._apply_widget_scaling(self._desired_width),
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height=self._apply_widget_scaling(self._desired_height))
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self._canvas.grid(row=0, column=0, sticky="nswe")
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self._draw_engine = DrawEngine(self._canvas)
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self._text_label = tkinter.Label(master=self,
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highlightthickness=0,
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padx=0,
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pady=0,
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borderwidth=1,
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anchor=self._anchor,
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text=self._text,
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font=self._apply_font_scaling(self._font))
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self._text_label.configure(**pop_from_dict_by_set(kwargs, self._valid_tk_label_attributes))
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text_label_grid_sticky = self._anchor if self._anchor != "center" else ""
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self._text_label.grid(row=0, column=0, sticky=text_label_grid_sticky,
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padx=self._apply_widget_scaling(min(self._corner_radius, round(self._current_height/2))))
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check_kwargs_empty(kwargs, raise_error=True)
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self._draw()
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def _set_scaling(self, *args, **kwargs):
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super()._set_scaling(*args, **kwargs)
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self._canvas.configure(width=self._apply_widget_scaling(self._desired_width), height=self._apply_widget_scaling(self._desired_height))
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self._text_label.configure(font=self._apply_font_scaling(self._font))
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text_label_grid_sticky = self._anchor if self._anchor != "center" else ""
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self._text_label.grid(row=0, column=0, sticky=text_label_grid_sticky,
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padx=self._apply_widget_scaling(min(self._corner_radius, round(self._current_height/2))))
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self._draw(no_color_updates=True)
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def _set_dimensions(self, width=None, height=None):
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super()._set_dimensions(width, height)
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self._canvas.configure(width=self._apply_widget_scaling(self._desired_width),
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height=self._apply_widget_scaling(self._desired_height))
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self._draw()
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def _update_font(self):
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""" pass font to tkinter widgets with applied font scaling and update grid with workaround """
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self._text_label.configure(font=self._apply_font_scaling(self._font))
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# Workaround to force grid to be resized when text changes size.
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# Otherwise grid will lag and only resizes if other mouse action occurs.
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self._canvas.grid_forget()
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self._canvas.grid(row=0, column=0, sticky="nswe")
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def destroy(self):
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if isinstance(self._font, CTkFont):
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self._font.remove_size_configure_callback(self._update_font)
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super().destroy()
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def _draw(self, no_color_updates=False):
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requires_recoloring = self._draw_engine.draw_rounded_rect_with_border(self._apply_widget_scaling(self._current_width),
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self._apply_widget_scaling(self._current_height),
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self._apply_widget_scaling(self._corner_radius),
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0)
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if no_color_updates is False or requires_recoloring:
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if self._apply_appearance_mode(self._fg_color) is not None:
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self._canvas.itemconfig("inner_parts",
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fill=self._apply_appearance_mode(self._fg_color),
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outline=self._apply_appearance_mode(self._fg_color))
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self._text_label.configure(fg=self._apply_appearance_mode(self._text_color),
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bg=self._apply_appearance_mode(self._fg_color))
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else:
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self._canvas.itemconfig("inner_parts",
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fill=self._apply_appearance_mode(self._bg_color),
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outline=self._apply_appearance_mode(self._bg_color))
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self._text_label.configure(fg=self._apply_appearance_mode(self._text_color),
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bg=self._apply_appearance_mode(self._bg_color))
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self._canvas.configure(bg=self._apply_appearance_mode(self._bg_color))
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def configure(self, require_redraw=False, **kwargs):
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if "anchor" in kwargs:
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self._anchor = kwargs.pop("anchor")
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text_label_grid_sticky = self._anchor if self._anchor != "center" else ""
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self._text_label.grid(row=0, column=0, sticky=text_label_grid_sticky,
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padx=self._apply_widget_scaling(min(self._corner_radius, round(self._current_height/2))))
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if "text" in kwargs:
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self._text = kwargs.pop("text")
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self._text_label.configure(text=self._text)
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if "font" in kwargs:
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if isinstance(self._font, CTkFont):
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self._font.remove_size_configure_callback(self._update_font)
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self._font = self._check_font_type(kwargs.pop("font"))
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if isinstance(self._font, CTkFont):
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self._font.add_size_configure_callback(self._update_font)
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self._update_font()
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if "fg_color" in kwargs:
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self._fg_color = kwargs.pop("fg_color")
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require_redraw = True
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if "text_color" in kwargs:
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self._text_color = kwargs.pop("text_color")
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require_redraw = True
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if "corner_radius" in kwargs:
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self._corner_radius = kwargs.pop("corner_radius")
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text_label_grid_sticky = self._anchor if self._anchor != "center" else ""
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self._text_label.grid(row=0, column=0, sticky=text_label_grid_sticky,
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padx=self._apply_widget_scaling(min(self._corner_radius, round(self._current_height/2))))
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require_redraw = True
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self._text_label.configure(**pop_from_dict_by_set(kwargs, self._valid_tk_label_attributes)) # configure tkinter.Label
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super().configure(require_redraw=require_redraw, **kwargs) # configure CTkBaseClass
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def cget(self, attribute_name: str) -> any:
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if attribute_name == "corner_radius":
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return self._corner_radius
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elif attribute_name == "fg_color":
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return self._fg_color
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elif attribute_name == "text_color":
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return self._text_color
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elif attribute_name == "text":
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return self._text
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elif attribute_name == "font":
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return self._font
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elif attribute_name == "anchor":
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return self._anchor
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elif attribute_name in self._valid_tk_label_attributes:
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return self._text_label.cget(attribute_name) # cget of tkinter.Label
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else:
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return super().cget(attribute_name) # cget of CTkBaseClass
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def bind(self, sequence: str = None, command: Callable = None, add: str = None) -> str:
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""" called on the tkinter.Label and tkinter.Canvas """
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canvas_bind_return = self._canvas.bind(sequence, command, add)
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label_bind_return = self._text_label.bind(sequence, command, add)
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return canvas_bind_return + " + " + label_bind_return
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def unbind(self, sequence: str, funcid: str = None):
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""" called on the tkinter.Label and tkinter.Canvas """
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canvas_bind_return, label_bind_return = funcid.split(" + ")
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self._canvas.unbind(sequence, canvas_bind_return)
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self._text_label.unbind(sequence, label_bind_return)
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def focus(self):
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return self._text_label.focus()
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def focus_set(self):
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return self._text_label.focus_set()
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def focus_force(self):
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return self._text_label.focus_force()
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