import tkinter import sys from typing import Union, Tuple, Callable from .ctk_canvas import CTkCanvas from ..theme_manager import ThemeManager from ..draw_engine import DrawEngine from .widget_base_class import CTkBaseClass class CTkSlider(CTkBaseClass): """ Slider with rounded corners, border, number of steps, variable support, vertical orientation. For detailed information check out the documentation. """ def __init__(self, master: any = None, width: Union[int, str] = "default_init", height: Union[int, str] = "default_init", corner_radius: Union[int, str] = "default_theme", button_corner_radius: Union[int, str] = "default_theme", border_width: Union[int, str] = "default_theme", button_length: Union[int, str] = "default_theme", bg_color: Union[str, Tuple[str, str], None] = None, fg_color: Union[str, Tuple[str, str]] = "default_theme", border_color: Union[str, Tuple[str, str], None] = None, progress_color: Union[str, Tuple[str, str], None] = "default_theme", button_color: Union[str, Tuple[str, str]] = "default_theme", button_hover_color: Union[str, Tuple[str, str]] = "default_theme", from_: int = 0, to: int = 1, state: str = "normal", number_of_steps: Union[int, None] = None, hover: bool = True, command: Callable[[float], None] = None, variable: tkinter.Variable = None, orientation: str = "horizontal", **kwargs): # set default dimensions according to orientation if width == "default_init": if orientation.lower() == "vertical": width = 16 else: width = 200 if height == "default_init": if orientation.lower() == "vertical": height = 200 else: height = 16 # transfer basic functionality (_bg_color, size, _appearance_mode, scaling) to CTkBaseClass super().__init__(master=master, bg_color=bg_color, width=width, height=height, **kwargs) # color self._border_color = border_color self._fg_color = ThemeManager.theme["color"]["slider"] if fg_color == "default_theme" else fg_color self._progress_color = ThemeManager.theme["color"]["slider_progress"] if progress_color == "default_theme" else progress_color self._button_color = ThemeManager.theme["color"]["slider_button"] if button_color == "default_theme" else button_color self._button_hover_color = ThemeManager.theme["color"]["slider_button_hover"] if button_hover_color == "default_theme" else button_hover_color # shape self._corner_radius = ThemeManager.theme["shape"]["slider_corner_radius"] if corner_radius == "default_theme" else corner_radius self._button_corner_radius = ThemeManager.theme["shape"]["slider_button_corner_radius"] if button_corner_radius == "default_theme" else button_corner_radius self._border_width = ThemeManager.theme["shape"]["slider_border_width"] if border_width == "default_theme" else border_width self._button_length = ThemeManager.theme["shape"]["slider_button_length"] if button_length == "default_theme" else button_length self._value: float = 0.5 # initial value of slider in percent self._orientation = orientation self._hover_state: bool = False self._hover = hover self._from_ = from_ self._to = to self._number_of_steps = number_of_steps self._output_value = self._from_ + (self._value * (self._to - self._from_)) if self._corner_radius < self._button_corner_radius: self._corner_radius = self._button_corner_radius # callback and control variables self._command = command self._variable: tkinter.Variable = variable self._variable_callback_blocked: bool = False self._variable_callback_name: Union[bool, None] = None self._state = state self.grid_rowconfigure(0, weight=1) self.grid_columnconfigure(0, weight=1) self._canvas = CTkCanvas(master=self, highlightthickness=0, width=self._apply_widget_scaling(self._desired_width), height=self._apply_widget_scaling(self._desired_height)) self._canvas.grid(column=0, row=0, rowspan=1, columnspan=1, sticky="nswe") self._draw_engine = DrawEngine(self._canvas) self._canvas.bind("", self._on_enter) self._canvas.bind("", self._on_leave) self._canvas.bind("", self._clicked) self._canvas.bind("", self._clicked) self._set_cursor() self._draw() # initial draw if self._variable is not None: self._variable_callback_name = self._variable.trace_add("write", self._variable_callback) self._variable_callback_blocked = True self.set(self._variable.get(), from_variable_callback=True) self._variable_callback_blocked = False def _set_scaling(self, *args, **kwargs): super()._set_scaling(*args, **kwargs) self._canvas.configure(width=self._apply_widget_scaling(self._desired_width), height=self._apply_widget_scaling(self._desired_height)) self._draw(no_color_updates=True) def _set_dimensions(self, width=None, height=None): super()._set_dimensions(width, height) self._canvas.configure(width=self._apply_widget_scaling(self._desired_width), height=self._apply_widget_scaling(self._desired_height)) self._draw() def destroy(self): # remove variable_callback from variable callbacks if variable exists if self._variable is not None: self._variable.trace_remove("write", self._variable_callback_name) super().destroy() def _set_cursor(self): if self._state == "normal" and self._cursor_manipulation_enabled: if sys.platform == "darwin": self.configure(cursor="pointinghand") elif sys.platform.startswith("win"): self.configure(cursor="hand2") elif self._state == "disabled" and self._cursor_manipulation_enabled: if sys.platform == "darwin": self.configure(cursor="arrow") elif sys.platform.startswith("win"): self.configure(cursor="arrow") def _draw(self, no_color_updates=False): if self._orientation.lower() == "horizontal": orientation = "w" elif self._orientation.lower() == "vertical": orientation = "s" else: orientation = "w" requires_recoloring = self._draw_engine.draw_rounded_slider_with_border_and_button(self._apply_widget_scaling(self._current_width), self._apply_widget_scaling(self._current_height), self._apply_widget_scaling(self._corner_radius), self._apply_widget_scaling(self._border_width), self._apply_widget_scaling(self._button_length), self._apply_widget_scaling(self._button_corner_radius), self._value, orientation) if no_color_updates is False or requires_recoloring: self._canvas.configure(bg=ThemeManager.single_color(self._bg_color, self._appearance_mode)) if self._border_color is None: self._canvas.itemconfig("border_parts", fill=ThemeManager.single_color(self._bg_color, self._appearance_mode), outline=ThemeManager.single_color(self._bg_color, self._appearance_mode)) else: self._canvas.itemconfig("border_parts", fill=ThemeManager.single_color(self._border_color, self._appearance_mode), outline=ThemeManager.single_color(self._border_color, self._appearance_mode)) self._canvas.itemconfig("inner_parts", fill=ThemeManager.single_color(self._fg_color, self._appearance_mode), outline=ThemeManager.single_color(self._fg_color, self._appearance_mode)) if self._progress_color is None: self._canvas.itemconfig("progress_parts", fill=ThemeManager.single_color(self._fg_color, self._appearance_mode), outline=ThemeManager.single_color(self._fg_color, self._appearance_mode)) else: self._canvas.itemconfig("progress_parts", fill=ThemeManager.single_color(self._progress_color, self._appearance_mode), outline=ThemeManager.single_color(self._progress_color, self._appearance_mode)) if self._hover_state is True: self._canvas.itemconfig("slider_parts", fill=ThemeManager.single_color(self._button_hover_color, self._appearance_mode), outline=ThemeManager.single_color(self._button_hover_color, self._appearance_mode)) else: self._canvas.itemconfig("slider_parts", fill=ThemeManager.single_color(self._button_color, self._appearance_mode), outline=ThemeManager.single_color(self._button_color, self._appearance_mode)) def configure(self, require_redraw=False, **kwargs): if "state" in kwargs: self._state = kwargs.pop("state") self._set_cursor() require_redraw = True if "fg_color" in kwargs: self._fg_color = kwargs.pop("fg_color") require_redraw = True if "progress_color" in kwargs: self._progress_color = kwargs.pop("progress_color") require_redraw = True if "button_color" in kwargs: self._button_color = kwargs.pop("button_color") require_redraw = True if "button_hover_color" in kwargs: self._button_hover_color = kwargs.pop("button_hover_color") require_redraw = True if "border_color" in kwargs: self._border_color = kwargs.pop("border_color") require_redraw = True if "border_width" in kwargs: self._border_width = kwargs.pop("border_width") require_redraw = True if "from_" in kwargs: self._from_ = kwargs.pop("from_") if "to" in kwargs: self._to = kwargs.pop("to") if "number_of_steps" in kwargs: self._number_of_steps = kwargs.pop("number_of_steps") if "hover" in kwargs: self._hover = kwargs.pop("hover") if "command" in kwargs: self._command = kwargs.pop("command") if "variable" in kwargs: if self._variable is not None: self._variable.trace_remove("write", self._variable_callback_name) self._variable = kwargs.pop("variable") if self._variable is not None and self._variable != "": self._variable_callback_name = self._variable.trace_add("write", self._variable_callback) self.set(self._variable.get(), from_variable_callback=True) else: self._variable = None super().configure(require_redraw=require_redraw, **kwargs) def cget(self, attribute_name: str) -> any: if attribute_name == "corner_radius": return self._corner_radius elif attribute_name == "button_corner_radius": return self._button_corner_radius elif attribute_name == "border_width": return self._border_width elif attribute_name == "button_length": return self._button_length elif attribute_name == "fg_color": return self._fg_color elif attribute_name == "border_color": return self._border_color elif attribute_name == "progress_color": return self._progress_color elif attribute_name == "button_color": return self._button_color elif attribute_name == "button_hover_color": return self._button_hover_color elif attribute_name == "from_": return self._from_ elif attribute_name == "to": return self._to elif attribute_name == "state": return self._state elif attribute_name == "number_of_steps": return self._number_of_steps elif attribute_name == "hover": return self._hover elif attribute_name == "command": return self._command elif attribute_name == "variable": return self._variable elif attribute_name == "orientation": return self._orientation else: return super().cget(attribute_name) def _clicked(self, event=None): if self._state == "normal": if self._orientation.lower() == "horizontal": self._value = (event.x / self._current_width) / self._widget_scaling else: self._value = 1 - (event.y / self._current_height) / self._widget_scaling if self._value > 1: self._value = 1 if self._value < 0: self._value = 0 self._output_value = self._round_to_step_size(self._from_ + (self._value * (self._to - self._from_))) self._value = (self._output_value - self._from_) / (self._to - self._from_) self._draw(no_color_updates=False) if self._variable is not None: self._variable_callback_blocked = True self._variable.set(round(self._output_value) if isinstance(self._variable, tkinter.IntVar) else self._output_value) self._variable_callback_blocked = False if self._command is not None: self._command(self._output_value) def _on_enter(self, event=0): if self._hover is True and self._state == "normal": self._hover_state = True self._canvas.itemconfig("slider_parts", fill=ThemeManager.single_color(self._button_hover_color, self._appearance_mode), outline=ThemeManager.single_color(self._button_hover_color, self._appearance_mode)) def _on_leave(self, event=0): self._hover_state = False self._canvas.itemconfig("slider_parts", fill=ThemeManager.single_color(self._button_color, self._appearance_mode), outline=ThemeManager.single_color(self._button_color, self._appearance_mode)) def _round_to_step_size(self, value) -> float: if self._number_of_steps is not None: step_size = (self._to - self._from_) / self._number_of_steps value = self._to - (round((self._to - value) / step_size) * step_size) return value else: return value def get(self) -> float: return self._output_value def set(self, output_value, from_variable_callback=False): if self._from_ < self._to: if output_value > self._to: output_value = self._to elif output_value < self._from_: output_value = self._from_ else: if output_value < self._to: output_value = self._to elif output_value > self._from_: output_value = self._from_ self._output_value = self._round_to_step_size(output_value) self._value = (self._output_value - self._from_) / (self._to - self._from_) self._draw(no_color_updates=False) if self._variable is not None and not from_variable_callback: self._variable_callback_blocked = True self._variable.set(round(self._output_value) if isinstance(self._variable, tkinter.IntVar) else self._output_value) self._variable_callback_blocked = False def _variable_callback(self, var_name, index, mode): if not self._variable_callback_blocked: self.set(self._variable.get(), from_variable_callback=True) def bind(self, sequence=None, command=None, add=None): """ called on the tkinter.Canvas """ return self._canvas.bind(sequence, command, add) def unbind(self, sequence, funcid=None): """ called on the tkinter.Canvas """ return self._canvas.unbind(sequence, funcid) def focus(self): return self._canvas.focus() def focus_set(self): return self._canvas.focus_set() def focus_force(self): return self._canvas.focus_force()