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384 lines
18 KiB
384 lines
18 KiB
import tkinter
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from typing import Union, Tuple, Optional
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from .core_rendering import CTkCanvas
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from .theme import ThemeManager
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from .core_rendering import DrawEngine
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from .core_widget_classes import CTkBaseClass
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from .font import CTkFont
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from .utility import pop_from_dict_by_set, check_kwargs_empty
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class CTkEntry(CTkBaseClass):
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"""
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Entry with rounded corners, border, textvariable support, focus and placeholder.
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For detailed information check out the documentation.
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"""
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_minimum_x_padding = 6 # minimum padding between tkinter entry and frame border
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# attributes that are passed to and managed by the tkinter entry only:
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_valid_tk_entry_attributes = {"exportselection", "insertborderwidth", "insertofftime",
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"insertontime", "insertwidth", "justify", "selectborderwidth",
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"show", "takefocus", "validate", "validatecommand", "xscrollcommand"}
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def __init__(self,
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master: any,
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width: int = 140,
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height: int = 28,
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corner_radius: Optional[int] = None,
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border_width: Optional[int] = None,
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bg_color: Union[str, Tuple[str, str]] = "transparent",
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fg_color: Optional[Union[str, Tuple[str, str]]] = None,
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border_color: Optional[Union[str, Tuple[str, str]]] = None,
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text_color: Optional[Union[str, Tuple[str, str]]] = None,
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placeholder_text_color: Optional[Union[str, Tuple[str, str]]] = None,
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textvariable: Union[tkinter.Variable, None] = None,
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placeholder_text: Union[str, None] = None,
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font: Optional[Union[tuple, CTkFont]] = None,
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state: str = tkinter.NORMAL,
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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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# 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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# color
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self._fg_color = ThemeManager.theme["CTkEntry"]["fg_color"] if fg_color is None else self._check_color_type(fg_color, transparency=True)
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self._text_color = ThemeManager.theme["CTkEntry"]["text_color"] if text_color is None else self._check_color_type(text_color)
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self._placeholder_text_color = ThemeManager.theme["CTkEntry"]["placeholder_text_color"] if placeholder_text_color is None else self._check_color_type(placeholder_text_color)
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self._border_color = ThemeManager.theme["CTkEntry"]["border_color"] if border_color is None else self._check_color_type(border_color)
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# shape
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self._corner_radius = ThemeManager.theme["CTkEntry"]["corner_radius"] if corner_radius is None else corner_radius
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self._border_width = ThemeManager.theme["CTkEntry"]["border_width"] if border_width is None else border_width
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# text and state
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self._is_focused: bool = True
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self._placeholder_text = placeholder_text
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self._placeholder_text_active = False
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self._pre_placeholder_arguments = {} # some set arguments of the entry will be changed for placeholder and then set back
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self._textvariable = textvariable
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self._state = state
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self._textvariable_callback_name: str = ""
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# font
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self._font = CTkFont() if font is None 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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if not (self._textvariable is None or self._textvariable == ""):
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self._textvariable_callback_name = self._textvariable.trace_add("write", self._textvariable_callback)
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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._current_width),
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height=self._apply_widget_scaling(self._current_height))
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self._draw_engine = DrawEngine(self._canvas)
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self._entry = tkinter.Entry(master=self,
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bd=0,
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width=1,
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highlightthickness=0,
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font=self._apply_font_scaling(self._font),
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state=self._state,
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textvariable=self._textvariable,
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**pop_from_dict_by_set(kwargs, self._valid_tk_entry_attributes))
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check_kwargs_empty(kwargs, raise_error=True)
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self._create_grid()
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self._activate_placeholder()
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self._create_bindings()
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self._draw()
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def _create_bindings(self, sequence: Optional[str] = None):
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""" set necessary bindings for functionality of widget, will overwrite other bindings """
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if sequence is None or sequence == "<FocusIn>":
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self._entry.bind("<FocusIn>", self._entry_focus_in)
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if sequence is None or sequence == "<FocusOut>":
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self._entry.bind("<FocusOut>", self._entry_focus_out)
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def _create_grid(self):
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self._canvas.grid(column=0, row=0, sticky="nswe")
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if self._corner_radius >= self._minimum_x_padding:
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self._entry.grid(column=0, row=0, sticky="nswe",
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padx=min(self._apply_widget_scaling(self._corner_radius), round(self._apply_widget_scaling(self._current_height/2))),
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pady=(self._apply_widget_scaling(self._border_width), self._apply_widget_scaling(self._border_width + 1)))
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else:
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self._entry.grid(column=0, row=0, sticky="nswe",
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padx=self._apply_widget_scaling(self._minimum_x_padding),
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pady=(self._apply_widget_scaling(self._border_width), self._apply_widget_scaling(self._border_width + 1)))
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def _textvariable_callback(self, var_name, index, mode):
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if self._textvariable.get() == "":
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self._activate_placeholder()
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def _set_scaling(self, *args, **kwargs):
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super()._set_scaling(*args, **kwargs)
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self._entry.configure(font=self._apply_font_scaling(self._font))
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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._create_grid()
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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._entry.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(column=0, row=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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super()._draw(no_color_updates)
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self._canvas.configure(bg=self._apply_appearance_mode(self._bg_color))
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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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self._apply_widget_scaling(self._border_width))
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if requires_recoloring or no_color_updates is False:
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if self._apply_appearance_mode(self._fg_color) == "transparent":
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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._entry.configure(bg=self._apply_appearance_mode(self._bg_color),
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disabledbackground=self._apply_appearance_mode(self._bg_color),
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readonlybackground=self._apply_appearance_mode(self._bg_color),
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highlightcolor=self._apply_appearance_mode(self._bg_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._fg_color),
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outline=self._apply_appearance_mode(self._fg_color))
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self._entry.configure(bg=self._apply_appearance_mode(self._fg_color),
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disabledbackground=self._apply_appearance_mode(self._fg_color),
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readonlybackground=self._apply_appearance_mode(self._fg_color),
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highlightcolor=self._apply_appearance_mode(self._fg_color))
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self._canvas.itemconfig("border_parts",
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fill=self._apply_appearance_mode(self._border_color),
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outline=self._apply_appearance_mode(self._border_color))
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if self._placeholder_text_active:
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self._entry.config(fg=self._apply_appearance_mode(self._placeholder_text_color),
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disabledforeground=self._apply_appearance_mode(self._placeholder_text_color),
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insertbackground=self._apply_appearance_mode(self._placeholder_text_color))
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else:
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self._entry.config(fg=self._apply_appearance_mode(self._text_color),
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disabledforeground=self._apply_appearance_mode(self._text_color),
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insertbackground=self._apply_appearance_mode(self._text_color))
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def configure(self, require_redraw=False, **kwargs):
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if "state" in kwargs:
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self._state = kwargs.pop("state")
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self._entry.configure(state=self._state)
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if "fg_color" in kwargs:
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self._fg_color = self._check_color_type(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 = self._check_color_type(kwargs.pop("text_color"))
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require_redraw = True
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if "placeholder_text_color" in kwargs:
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self._placeholder_text_color = self._check_color_type(kwargs.pop("placeholder_text_color"))
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require_redraw = True
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if "border_color" in kwargs:
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self._border_color = self._check_color_type(kwargs.pop("border_color"))
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require_redraw = True
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if "border_width" in kwargs:
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self._border_width = kwargs.pop("border_width")
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self._create_grid()
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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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self._create_grid()
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require_redraw = True
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if "placeholder_text" in kwargs:
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self._placeholder_text = kwargs.pop("placeholder_text")
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if self._placeholder_text_active:
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self._entry.delete(0, tkinter.END)
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self._entry.insert(0, self._placeholder_text)
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else:
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self._activate_placeholder()
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if "textvariable" in kwargs:
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self._textvariable = kwargs.pop("textvariable")
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self._entry.configure(textvariable=self._textvariable)
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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 "show" in kwargs:
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if self._placeholder_text_active:
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self._pre_placeholder_arguments["show"] = kwargs.pop("show") # remember show argument for when placeholder gets deactivated
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else:
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self._entry.configure(show=kwargs.pop("show"))
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self._entry.configure(**pop_from_dict_by_set(kwargs, self._valid_tk_entry_attributes)) # configure Tkinter.Entry
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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 == "border_width":
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return self._border_width
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elif attribute_name == "fg_color":
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return self._fg_color
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elif attribute_name == "border_color":
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return self._border_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 == "placeholder_text_color":
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return self._placeholder_text_color
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elif attribute_name == "textvariable":
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return self._textvariable
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elif attribute_name == "placeholder_text":
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return self._placeholder_text
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elif attribute_name == "font":
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return self._font
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elif attribute_name == "state":
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return self._state
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elif attribute_name in self._valid_tk_entry_attributes:
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return self._entry.cget(attribute_name) # cget of tkinter.Entry
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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=None, command=None, add=True):
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""" called on the tkinter.Entry """
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if not (add == "+" or add is True):
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raise ValueError("'add' argument can only be '+' or True to preserve internal callbacks")
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self._entry.bind(sequence, command, add=True)
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def unbind(self, sequence=None, funcid=None):
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""" called on the tkinter.Entry """
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if funcid is not None:
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raise ValueError("'funcid' argument can only be None, because there is a bug in" +
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" tkinter and its not clear whether the internal callbacks will be unbinded or not")
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self._entry.unbind(sequence, None) # unbind all callbacks for sequence
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self._create_bindings(sequence=sequence) # restore internal callbacks for sequence
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def _activate_placeholder(self):
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if self._entry.get() == "" and self._placeholder_text is not None and (self._textvariable is None or self._textvariable == ""):
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self._placeholder_text_active = True
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self._pre_placeholder_arguments = {"show": self._entry.cget("show")}
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self._entry.config(fg=self._apply_appearance_mode(self._placeholder_text_color),
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disabledforeground=self._apply_appearance_mode(self._placeholder_text_color),
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show="")
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self._entry.delete(0, tkinter.END)
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self._entry.insert(0, self._placeholder_text)
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def _deactivate_placeholder(self):
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if self._placeholder_text_active and self._entry.cget("state") != "readonly":
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self._placeholder_text_active = False
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self._entry.config(fg=self._apply_appearance_mode(self._text_color),
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disabledforeground=self._apply_appearance_mode(self._text_color),)
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self._entry.delete(0, tkinter.END)
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for argument, value in self._pre_placeholder_arguments.items():
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self._entry[argument] = value
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def _entry_focus_out(self, event=None):
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self._activate_placeholder()
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self._is_focused = False
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def _entry_focus_in(self, event=None):
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self._deactivate_placeholder()
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self._is_focused = True
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def delete(self, first_index, last_index=None):
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self._entry.delete(first_index, last_index)
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if not self._is_focused and self._entry.get() == "":
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self._activate_placeholder()
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def insert(self, index, string):
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self._deactivate_placeholder()
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return self._entry.insert(index, string)
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def get(self):
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if self._placeholder_text_active:
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return ""
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else:
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return self._entry.get()
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def focus(self):
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return self._entry.focus()
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def focus_set(self):
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return self._entry.focus_set()
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def focus_force(self):
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return self._entry.focus_force()
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def index(self, index):
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return self._entry.index(index)
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def icursor(self, index):
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return self._entry.icursor(index)
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def select_adjust(self, index):
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return self._entry.select_adjust(index)
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def select_from(self, index):
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return self._entry.icursor(index)
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def select_clear(self):
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return self._entry.select_clear()
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def select_present(self):
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return self._entry.select_present()
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def select_range(self, start_index, end_index):
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return self._entry.select_range(start_index, end_index)
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def select_to(self, index):
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return self._entry.select_to(index)
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def xview(self, index):
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return self._entry.xview(index)
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def xview_moveto(self, f):
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return self._entry.xview_moveto(f)
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def xview_scroll(self, number, what):
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return self._entry.xview_scroll(number, what)
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