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569from __future__ import annotations
import numpy as np
from pyglet.window import key as PygletWindowKeys
from manimlib.constants import FRAME_HEIGHT, FRAME_WIDTH
from manimlib.constants import DOWN, LEFT, ORIGIN, RIGHT, UP
from manimlib.constants import MED_LARGE_BUFF, MED_SMALL_BUFF, SMALL_BUFF
from manimlib.constants import BLACK, BLUE, GREEN, GREY_A, GREY_C, RED, WHITE, DEFAULT_MOBJECT_COLOR
from manimlib.mobject.mobject import Group
from manimlib.mobject.mobject import Mobject
from manimlib.mobject.geometry import Circle
from manimlib.mobject.geometry import Dot
from manimlib.mobject.geometry import Line
from manimlib.mobject.geometry import Rectangle
from manimlib.mobject.geometry import RoundedRectangle
from manimlib.mobject.geometry import Square
from manimlib.mobject.svg.text_mobject import Text
from manimlib.mobject.types.vectorized_mobject import VGroup
from manimlib.mobject.value_tracker import ValueTracker
from manimlib.utils.color import rgb_to_hex
from manimlib.utils.space_ops import get_closest_point_on_line
from manimlib.utils.space_ops import get_norm
from typing import TYPE_CHECKING
if TYPE_CHECKING:
from typing import Callable
from manimlib.typing import ManimColor
# Interactive Mobjects
class MotionMobject(Mobject):
"""
You could hold and drag this object to any position
"""
def __init__(self, mobject: Mobject, **kwargs):
super().__init__(**kwargs)
assert isinstance(mobject, Mobject)
self.mobject = mobject
self.mobject.add_mouse_drag_listner(self.mob_on_mouse_drag)
# To avoid locking it as static mobject
self.mobject.add_updater(lambda mob: None)
self.add(mobject)
def mob_on_mouse_drag(self, mob: Mobject, event_data: dict[str, np.ndarray]) -> bool:
mob.move_to(event_data["point"])
return False
class Button(Mobject):
"""
Pass any mobject and register an on_click method
The on_click method takes mobject as argument like updater
"""
def __init__(self, mobject: Mobject, on_click: Callable[[Mobject]], **kwargs):
super().__init__(**kwargs)
assert isinstance(mobject, Mobject)
self.on_click = on_click
self.mobject = mobject
self.mobject.add_mouse_press_listner(self.mob_on_mouse_press)
self.add(self.mobject)
def mob_on_mouse_press(self, mob: Mobject, event_data) -> bool:
self.on_click(mob)
return False
# Controls
class ControlMobject(ValueTracker):
def __init__(self, value: float, *mobjects: Mobject, **kwargs):
super().__init__(value=value, **kwargs)
self.add(*mobjects)
# To avoid lock_static_mobject_data while waiting in scene
self.add_updater(lambda mob: None)
self.fix_in_frame()
def set_value(self, value: float):
self.assert_value(value)
self.set_value_anim(value)
return ValueTracker.set_value(self, value)
def assert_value(self, value):
# To be implemented in subclasses
pass
def set_value_anim(self, value):
# To be implemented in subclasses
pass
class EnableDisableButton(ControlMobject):
def __init__(
self,
value: bool = True,
value_type: np.dtype = np.dtype(bool),
rect_kwargs: dict = {
"width": 0.5,
"height": 0.5,
"fill_opacity": 1.0
},
enable_color: ManimColor = GREEN,
disable_color: ManimColor = RED,
**kwargs
):
self.value = value
self.value_type = value_type
self.rect_kwargs = rect_kwargs
self.enable_color = enable_color
self.disable_color = disable_color
self.box = Rectangle(**self.rect_kwargs)
super().__init__(value, self.box, **kwargs)
self.add_mouse_press_listner(self.on_mouse_press)
def assert_value(self, value: bool) -> None:
assert isinstance(value, bool)
def set_value_anim(self, value: bool) -> None:
if value:
self.box.set_fill(self.enable_color)
else:
self.box.set_fill(self.disable_color)
def toggle_value(self) -> None:
super().set_value(not self.get_value())
def on_mouse_press(self, mob: Mobject, event_data) -> bool:
mob.toggle_value()
return False
class Checkbox(ControlMobject):
def __init__(
self,
value: bool = True,
value_type: np.dtype = np.dtype(bool),
rect_kwargs: dict = {
"width": 0.5,
"height": 0.5,
"fill_opacity": 0.0
},
checkmark_kwargs: dict = {
"stroke_color": GREEN,
"stroke_width": 6,
},
cross_kwargs: dict = {
"stroke_color": RED,
"stroke_width": 6,
},
box_content_buff: float = SMALL_BUFF,
**kwargs
):
self.value_type = value_type
self.rect_kwargs = rect_kwargs
self.checkmark_kwargs = checkmark_kwargs
self.cross_kwargs = cross_kwargs
self.box_content_buff = box_content_buff
self.box = Rectangle(**self.rect_kwargs)
self.box_content = self.get_checkmark() if value else self.get_cross()
super().__init__(value, self.box, self.box_content, **kwargs)
self.add_mouse_press_listner(self.on_mouse_press)
def assert_value(self, value: bool) -> None:
assert isinstance(value, bool)
def toggle_value(self) -> None:
super().set_value(not self.get_value())
def set_value_anim(self, value: bool) -> None:
if value:
self.box_content.become(self.get_checkmark())
else:
self.box_content.become(self.get_cross())
def on_mouse_press(self, mob: Mobject, event_data) -> None:
mob.toggle_value()
return False
# Helper methods
def get_checkmark(self) -> VGroup:
checkmark = VGroup(
Line(UP / 2 + 2 * LEFT, DOWN + LEFT, **self.checkmark_kwargs),
Line(DOWN + LEFT, UP + RIGHT, **self.checkmark_kwargs)
)
checkmark.stretch_to_fit_width(self.box.get_width())
checkmark.stretch_to_fit_height(self.box.get_height())
checkmark.scale(0.5)
checkmark.move_to(self.box)
return checkmark
def get_cross(self) -> VGroup:
cross = VGroup(
Line(UP + LEFT, DOWN + RIGHT, **self.cross_kwargs),
Line(UP + RIGHT, DOWN + LEFT, **self.cross_kwargs)
)
cross.stretch_to_fit_width(self.box.get_width())
cross.stretch_to_fit_height(self.box.get_height())
cross.scale(0.5)
cross.move_to(self.box)
return cross
class LinearNumberSlider(ControlMobject):
def __init__(
self,
value: float = 0,
value_type: type = np.float64,
min_value: float = -10.0,
max_value: float = 10.0,
step: float = 1.0,
rounded_rect_kwargs: dict = {
"height": 0.075,
"width": 2,
"corner_radius": 0.0375
},
circle_kwargs: dict = {
"radius": 0.1,
"stroke_color": GREY_A,
"fill_color": GREY_A,
"fill_opacity": 1.0
},
**kwargs
):
self.value_type = value_type
self.min_value = min_value
self.max_value = max_value
self.step = step
self.rounded_rect_kwargs = rounded_rect_kwargs
self.circle_kwargs = circle_kwargs
self.bar = RoundedRectangle(**self.rounded_rect_kwargs)
self.slider = Circle(**self.circle_kwargs)
self.slider_axis = Line(
start=self.bar.get_bounding_box_point(LEFT),
end=self.bar.get_bounding_box_point(RIGHT)
)
self.slider_axis.set_opacity(0.0)
self.slider.move_to(self.slider_axis)
self.slider.add_mouse_drag_listner(self.slider_on_mouse_drag)
super().__init__(value, self.bar, self.slider, self.slider_axis, **kwargs)
def assert_value(self, value: float) -> None:
assert self.min_value <= value <= self.max_value
def set_value_anim(self, value: float) -> None:
prop = (value - self.min_value) / (self.max_value - self.min_value)
self.slider.move_to(self.slider_axis.point_from_proportion(prop))
def slider_on_mouse_drag(self, mob, event_data: dict[str, np.ndarray]) -> bool:
self.set_value(self.get_value_from_point(event_data["point"]))
return False
# Helper Methods
def get_value_from_point(self, point: np.ndarray) -> float:
start, end = self.slider_axis.get_start_and_end()
point_on_line = get_closest_point_on_line(start, end, point)
prop = get_norm(point_on_line - start) / get_norm(end - start)
value = self.min_value + prop * (self.max_value - self.min_value)
no_of_steps = int((value - self.min_value) / self.step)
value_nearest_to_step = self.min_value + no_of_steps * self.step
return value_nearest_to_step
class ColorSliders(Group):
def __init__(
self,
sliders_kwargs: dict = {},
rect_kwargs: dict = {
"width": 2.0,
"height": 0.5,
"stroke_opacity": 1.0
},
background_grid_kwargs: dict = {
"colors": [GREY_A, GREY_C],
"single_square_len": 0.1
},
sliders_buff: float = MED_LARGE_BUFF,
default_rgb_value: int = 255,
default_a_value: int = 1,
**kwargs
):
self.sliders_kwargs = sliders_kwargs
self.rect_kwargs = rect_kwargs
self.background_grid_kwargs = background_grid_kwargs
self.sliders_buff = sliders_buff
self.default_rgb_value = default_rgb_value
self.default_a_value = default_a_value
rgb_kwargs = {"value": self.default_rgb_value, "min_value": 0, "max_value": 255, "step": 1}
a_kwargs = {"value": self.default_a_value, "min_value": 0, "max_value": 1, "step": 0.04}
self.r_slider = LinearNumberSlider(**self.sliders_kwargs, **rgb_kwargs)
self.g_slider = LinearNumberSlider(**self.sliders_kwargs, **rgb_kwargs)
self.b_slider = LinearNumberSlider(**self.sliders_kwargs, **rgb_kwargs)
self.a_slider = LinearNumberSlider(**self.sliders_kwargs, **a_kwargs)
self.sliders = Group(
self.r_slider,
self.g_slider,
self.b_slider,
self.a_slider
)
self.sliders.arrange(DOWN, buff=self.sliders_buff)
self.r_slider.slider.set_color(RED)
self.g_slider.slider.set_color(GREEN)
self.b_slider.slider.set_color(BLUE)
self.a_slider.slider.set_color_by_gradient(BLACK, WHITE)
self.selected_color_box = Rectangle(**self.rect_kwargs)
self.selected_color_box.add_updater(
lambda mob: mob.set_fill(
self.get_picked_color(), self.get_picked_opacity()
)
)
self.background = self.get_background()
super().__init__(
Group(self.background, self.selected_color_box).fix_in_frame(),
self.sliders,
**kwargs
)
self.arrange(DOWN)
def get_background(self) -> VGroup:
single_square_len = self.background_grid_kwargs["single_square_len"]
colors = self.background_grid_kwargs["colors"]
width = self.rect_kwargs["width"]
height = self.rect_kwargs["height"]
rows = int(height / single_square_len)
cols = int(width / single_square_len)
cols = (cols + 1) if (cols % 2 == 0) else cols
single_square = Square(single_square_len)
grid = single_square.get_grid(n_rows=rows, n_cols=cols, buff=0.0)
grid.stretch_to_fit_width(width)
grid.stretch_to_fit_height(height)
grid.move_to(self.selected_color_box)
for idx, square in enumerate(grid):
assert isinstance(square, Square)
square.set_stroke(width=0.0, opacity=0.0)
square.set_fill(colors[idx % len(colors)], 1.0)
return grid
def set_value(self, r: float, g: float, b: float, a: float):
self.r_slider.set_value(r)
self.g_slider.set_value(g)
self.b_slider.set_value(b)
self.a_slider.set_value(a)
def get_value(self) -> np.ndarary:
r = self.r_slider.get_value() / 255
g = self.g_slider.get_value() / 255
b = self.b_slider.get_value() / 255
alpha = self.a_slider.get_value()
return np.array((r, g, b, alpha))
def get_picked_color(self) -> str:
rgba = self.get_value()
return rgb_to_hex(rgba[:3])
def get_picked_opacity(self) -> float:
rgba = self.get_value()
return rgba[3]
class Textbox(ControlMobject):
def __init__(
self,
value: str = "",
value_type: np.dtype = np.dtype(object),
box_kwargs: dict = {
"width": 2.0,
"height": 1.0,
"fill_color": DEFAULT_MOBJECT_COLOR,
"fill_opacity": 1.0,
},
text_kwargs: dict = {
"color": BLUE
},
text_buff: float = MED_SMALL_BUFF,
isInitiallyActive: bool = False,
active_color: ManimColor = BLUE,
deactive_color: ManimColor = RED,
**kwargs
):
self.value_type = value_type
self.box_kwargs = box_kwargs
self.text_kwargs = text_kwargs
self.text_buff = text_buff
self.isInitiallyActive = isInitiallyActive
self.active_color = active_color
self.deactive_color = deactive_color
self.isActive = self.isInitiallyActive
self.box = Rectangle(**self.box_kwargs)
self.box.add_mouse_press_listner(self.box_on_mouse_press)
self.text = Text(value, **self.text_kwargs)
super().__init__(value, self.box, self.text, **kwargs)
self.update_text(value)
self.active_anim(self.isActive)
self.add_key_press_listner(self.on_key_press)
def set_value_anim(self, value: str) -> None:
self.update_text(value)
def update_text(self, value: str) -> None:
text = self.text
self.remove(text)
text.__init__(value, **self.text_kwargs)
height = text.get_height()
text.set_width(self.box.get_width() - 2 * self.text_buff)
if text.get_height() > height:
text.set_height(height)
text.add_updater(lambda mob: mob.move_to(self.box))
text.fix_in_frame()
self.add(text)
def active_anim(self, isActive: bool) -> None:
if isActive:
self.box.set_stroke(self.active_color)
else:
self.box.set_stroke(self.deactive_color)
def box_on_mouse_press(self, mob, event_data) -> bool:
self.isActive = not self.isActive
self.active_anim(self.isActive)
return False
def on_key_press(self, mob: Mobject, event_data: dict[str, int]) -> bool | None:
symbol = event_data["symbol"]
modifiers = event_data["modifiers"]
char = chr(symbol)
if mob.isActive:
old_value = mob.get_value()
new_value = old_value
if char.isalnum():
if (modifiers & PygletWindowKeys.MOD_SHIFT) or (modifiers & PygletWindowKeys.MOD_CAPSLOCK):
new_value = old_value + char.upper()
else:
new_value = old_value + char.lower()
elif symbol in [PygletWindowKeys.SPACE]:
new_value = old_value + char
elif symbol == PygletWindowKeys.TAB:
new_value = old_value + '\t'
elif symbol == PygletWindowKeys.BACKSPACE:
new_value = old_value[:-1] or ''
mob.set_value(new_value)
return False
class ControlPanel(Group):
def __init__(
self,
*controls: ControlMobject,
panel_kwargs: dict = {
"width": FRAME_WIDTH / 4,
"height": MED_SMALL_BUFF + FRAME_HEIGHT,
"fill_color": GREY_C,
"fill_opacity": 1.0,
"stroke_width": 0.0
},
opener_kwargs: dict = {
"width": FRAME_WIDTH / 8,
"height": 0.5,
"fill_color": GREY_C,
"fill_opacity": 1.0
},
opener_text_kwargs: dict = {
"text": "Control Panel",
"font_size": 20
},
**kwargs
):
self.panel_kwargs = panel_kwargs
self.opener_kwargs = opener_kwargs
self.opener_text_kwargs = opener_text_kwargs
self.panel = Rectangle(**self.panel_kwargs)
self.panel.to_corner(UP + LEFT, buff=0)
self.panel.shift(self.panel.get_height() * UP)
self.panel.add_mouse_scroll_listner(self.panel_on_mouse_scroll)
self.panel_opener_rect = Rectangle(**self.opener_kwargs)
self.panel_info_text = Text(**self.opener_text_kwargs)
self.panel_info_text.move_to(self.panel_opener_rect)
self.panel_opener = Group(self.panel_opener_rect, self.panel_info_text)
self.panel_opener.next_to(self.panel, DOWN, aligned_edge=DOWN)
self.panel_opener.add_mouse_drag_listner(self.panel_opener_on_mouse_drag)
self.controls = Group(*controls)
self.controls.arrange(DOWN, center=False, aligned_edge=ORIGIN)
self.controls.move_to(self.panel)
super().__init__(
self.panel, self.panel_opener,
self.controls,
**kwargs
)
self.move_panel_and_controls_to_panel_opener()
self.fix_in_frame()
def move_panel_and_controls_to_panel_opener(self) -> None:
self.panel.next_to(
self.panel_opener_rect,
direction=UP,
buff=0
)
controls_old_x = self.controls.get_x()
self.controls.next_to(
self.panel_opener_rect,
direction=UP,
buff=MED_SMALL_BUFF
)
self.controls.set_x(controls_old_x)
def add_controls(self, *new_controls: ControlMobject) -> None:
self.controls.add(*new_controls)
self.move_panel_and_controls_to_panel_opener()
def remove_controls(self, *controls_to_remove: ControlMobject) -> None:
self.controls.remove(*controls_to_remove)
self.move_panel_and_controls_to_panel_opener()
def open_panel(self):
panel_opener_x = self.panel_opener.get_x()
self.panel_opener.to_corner(DOWN + LEFT, buff=0.0)
self.panel_opener.set_x(panel_opener_x)
self.move_panel_and_controls_to_panel_opener()
return self
def close_panel(self):
panel_opener_x = self.panel_opener.get_x()
self.panel_opener.to_corner(UP + LEFT, buff=0.0)
self.panel_opener.set_x(panel_opener_x)
self.move_panel_and_controls_to_panel_opener()
return self
def panel_opener_on_mouse_drag(self, mob, event_data: dict[str, np.ndarray]) -> bool:
point = event_data["point"]
self.panel_opener.match_y(Dot(point))
self.move_panel_and_controls_to_panel_opener()
return False
def panel_on_mouse_scroll(self, mob, event_data: dict[str, np.ndarray]) -> bool:
offset = event_data["offset"]
factor = 10 * offset[1]
self.controls.set_y(self.controls.get_y() + factor)
return False