mirror of
https://github.com/TomSchimansky/CustomTkinter.git
synced 2023-08-10 21:13:13 +03:00
moved base functionality of widgets to widget_base_class.py
This commit is contained in:
Tom Schimansky
281
customtkinter/widgets/ctk_slider.py
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281
customtkinter/widgets/ctk_slider.py
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import tkinter
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import sys
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from .ctk_canvas import CTkCanvas
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from ..customtkinter_theme_manager import CTkThemeManager
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from ..customtkinter_settings import CTkSettings
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from ..customtkinter_draw_engine import CTkDrawEngine
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from .widget_base_class import CTkBaseClass
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class CTkSlider(CTkBaseClass):
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""" tkinter custom slider, always horizontal """
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def __init__(self, *args,
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bg_color=None,
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border_color=None,
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fg_color="default_theme",
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progress_color="default_theme",
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button_color="default_theme",
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button_hover_color="default_theme",
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from_=0,
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to=1,
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number_of_steps=None,
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width=160,
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height=16,
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corner_radius="default_theme",
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button_corner_radius="default_theme",
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border_width="default_theme",
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button_length="default_theme",
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command=None,
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variable=None,
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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__(*args, bg_color=bg_color, width=width, height=height, **kwargs)
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# color
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self.border_color = border_color
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self.fg_color = CTkThemeManager.theme["color"]["slider"] if fg_color == "default_theme" else fg_color
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self.progress_color = CTkThemeManager.theme["color"]["slider_progress"] if progress_color == "default_theme" else progress_color
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self.button_color = CTkThemeManager.theme["color"]["slider_button"] if button_color == "default_theme" else button_color
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self.button_hover_color = CTkThemeManager.theme["color"]["slider_button_hover"] if button_hover_color == "default_theme" else button_hover_color
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# shape
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self.corner_radius = CTkThemeManager.theme["shape"]["slider_corner_radius"] if corner_radius == "default_theme" else corner_radius
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self.button_corner_radius = CTkThemeManager.theme["shape"]["slider_button_corner_radius"] if button_corner_radius == "default_theme" else button_corner_radius
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self.border_width = CTkThemeManager.theme["shape"]["slider_border_width"] if border_width == "default_theme" else border_width
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self.button_length = CTkThemeManager.theme["shape"]["slider_button_length"] if button_length == "default_theme" else button_length
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self.value = 0.5 # initial value of slider in percent
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self.hover_state = False
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self.from_ = from_
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self.to = to
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self.number_of_steps = number_of_steps
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self.output_value = self.from_ + (self.value * (self.to - self.from_))
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if self.corner_radius < self.button_corner_radius:
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self.corner_radius = self.button_corner_radius
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# callback and control variables
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self.callback_function = command
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self.variable: tkinter.Variable = variable
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self.variable_callback_blocked = False
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self.variable_callback_name = None
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self.canvas = CTkCanvas(master=self,
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highlightthickness=0,
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width=self.width,
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height=self.height)
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self.canvas.grid(column=0, row=0, sticky="nswe")
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self.draw_engine = CTkDrawEngine(self.canvas, CTkSettings.preferred_drawing_method)
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self.canvas.bind("<Enter>", self.on_enter)
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self.canvas.bind("<Leave>", self.on_leave)
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self.canvas.bind("<Button-1>", self.clicked)
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self.canvas.bind("<B1-Motion>", self.clicked)
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# Each time an item is resized due to pack position mode, the binding Configure is called on the widget
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self.bind('<Configure>', self.update_dimensions)
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self.set_cursor()
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self.draw() # initial draw
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if self.variable is not None:
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self.variable_callback_name = self.variable.trace_add("write", self.variable_callback)
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self.variable_callback_blocked = True
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self.set(self.variable.get(), from_variable_callback=True)
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self.variable_callback_blocked = False
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def destroy(self):
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# remove variable_callback from variable callbacks if variable exists
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if self.variable is not None:
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self.variable.trace_remove("write", self.variable_callback_name)
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super().destroy()
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def configure_basic_grid(self):
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self.grid_rowconfigure(0, weight=1)
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self.grid_columnconfigure(0, weight=1)
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def set_cursor(self):
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if sys.platform == "darwin":
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self.configure(cursor="pointinghand")
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elif sys.platform.startswith("win"):
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self.configure(cursor="hand2")
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def draw(self, no_color_updates=False):
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requires_recoloring = self.draw_engine.draw_rounded_slider_with_border_and_button(self.width, self.height, self.corner_radius, self.border_width,
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self.button_length, self.button_corner_radius, self.value, "w")
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if no_color_updates is False or requires_recoloring:
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self.canvas.configure(bg=CTkThemeManager.single_color(self.bg_color, self.appearance_mode))
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if self.border_color is None:
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self.canvas.itemconfig("border_parts", fill=CTkThemeManager.single_color(self.bg_color, self.appearance_mode),
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outline=CTkThemeManager.single_color(self.bg_color, self.appearance_mode))
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else:
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self.canvas.itemconfig("border_parts", fill=CTkThemeManager.single_color(self.border_color, self.appearance_mode),
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outline=CTkThemeManager.single_color(self.border_color, self.appearance_mode))
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self.canvas.itemconfig("inner_parts", fill=CTkThemeManager.single_color(self.fg_color, self.appearance_mode),
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outline=CTkThemeManager.single_color(self.fg_color, self.appearance_mode))
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if self.progress_color is None:
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self.canvas.itemconfig("progress_parts", fill=CTkThemeManager.single_color(self.fg_color, self.appearance_mode),
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outline=CTkThemeManager.single_color(self.fg_color, self.appearance_mode))
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else:
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self.canvas.itemconfig("progress_parts", fill=CTkThemeManager.single_color(self.progress_color, self.appearance_mode),
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outline=CTkThemeManager.single_color(self.progress_color, self.appearance_mode))
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self.canvas.itemconfig("slider_parts", fill=CTkThemeManager.single_color(self.button_color, self.appearance_mode),
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outline=CTkThemeManager.single_color(self.button_color, self.appearance_mode))
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def clicked(self, event=None):
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self.value = event.x / self.width
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if self.value > 1:
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self.value = 1
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if self.value < 0:
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self.value = 0
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self.output_value = self.round_to_step_size(self.from_ + (self.value * (self.to - self.from_)))
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self.value = (self.output_value - self.from_) / (self.to - self.from_)
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self.draw(no_color_updates=False)
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if self.callback_function is not None:
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self.callback_function(self.output_value)
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if self.variable is not None:
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self.variable_callback_blocked = True
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self.variable.set(round(self.output_value) if isinstance(self.variable, tkinter.IntVar) else self.output_value)
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self.variable_callback_blocked = False
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def on_enter(self, event=0):
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self.hover_state = True
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self.canvas.itemconfig("slider_parts", fill=CTkThemeManager.single_color(self.button_hover_color, self.appearance_mode),
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outline=CTkThemeManager.single_color(self.button_hover_color, self.appearance_mode))
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def on_leave(self, event=0):
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self.hover_state = False
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self.canvas.itemconfig("slider_parts", fill=CTkThemeManager.single_color(self.button_color, self.appearance_mode),
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outline=CTkThemeManager.single_color(self.button_color, self.appearance_mode))
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def round_to_step_size(self, value):
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if self.number_of_steps is not None:
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step_size = (self.to - self.from_) / self.number_of_steps
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value = self.to - (round((self.to - value) / step_size) * step_size)
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return value
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else:
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return value
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def get(self):
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return self.output_value
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def set(self, output_value, from_variable_callback=False):
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if self.from_ < self.to:
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if output_value > self.to:
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output_value = self.to
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elif output_value < self.from_:
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output_value = self.from_
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else:
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if output_value < self.to:
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output_value = self.to
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elif output_value > self.from_:
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output_value = self.from_
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self.output_value = self.round_to_step_size(output_value)
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self.value = (self.output_value - self.from_) / (self.to - self.from_)
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self.draw(no_color_updates=False)
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if self.callback_function is not None:
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self.callback_function(self.output_value)
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if self.variable is not None and not from_variable_callback:
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self.variable_callback_blocked = True
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self.variable.set(round(self.output_value) if isinstance(self.variable, tkinter.IntVar) else self.output_value)
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self.variable_callback_blocked = False
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def variable_callback(self, var_name, index, mode):
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if not self.variable_callback_blocked:
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self.set(self.variable.get(), from_variable_callback=True)
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def configure(self, *args, **kwargs):
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require_redraw = False # some attribute changes require a call of self.draw() at the end
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if "fg_color" in kwargs:
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self.fg_color = kwargs["fg_color"]
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require_redraw = True
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del kwargs["fg_color"]
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if "bg_color" in kwargs:
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if kwargs["bg_color"] is None:
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self.bg_color = self.detect_color_of_master()
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else:
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self.bg_color = kwargs["bg_color"]
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require_redraw = True
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del kwargs["bg_color"]
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if "progress_color" in kwargs:
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if kwargs["progress_color"] is None:
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self.progress_color = self.fg_color
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else:
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self.progress_color = kwargs["progress_color"]
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require_redraw = True
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del kwargs["progress_color"]
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if "button_color" in kwargs:
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self.button_color = kwargs["button_color"]
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require_redraw = True
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del kwargs["button_color"]
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if "button_hover_color" in kwargs:
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self.button_hover_color = kwargs["button_hover_color"]
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require_redraw = True
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del kwargs["button_hover_color"]
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if "border_color" in kwargs:
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self.border_color = kwargs["border_color"]
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require_redraw = True
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del kwargs["border_color"]
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if "border_width" in kwargs:
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self.border_width = kwargs["border_width"]
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require_redraw = True
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del kwargs["border_width"]
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if "from_" in kwargs:
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self.from_ = kwargs["from_"]
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del kwargs["from_"]
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if "to" in kwargs:
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self.to = kwargs["to"]
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del kwargs["to"]
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if "number_of_steps" in kwargs:
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self.number_of_steps = kwargs["number_of_steps"]
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del kwargs["number_of_steps"]
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if "command" in kwargs:
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self.callback_function = kwargs["command"]
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del kwargs["command"]
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if "variable" in kwargs:
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if self.variable is not None:
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self.variable.trace_remove("write", self.variable_callback_name)
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self.variable = kwargs["variable"]
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if self.variable is not None and self.variable != "":
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self.variable_callback_name = self.variable.trace_add("write", self.variable_callback)
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self.set(self.variable.get(), from_variable_callback=True)
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else:
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self.variable = None
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del kwargs["variable"]
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super().configure(*args, **kwargs)
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if require_redraw:
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self.draw()
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