def render(self):
return ed.View(layout="row")(
ed.View(layout="column", style={
"width": 720,
"margin": 10
})(
ed.View(layout="row")(
ed.IconButton("pause" if self.is_playing else "play",
on_click=lambda e: self.set_state(
is_playing=not self.is_playing)),
ed.Button(
"Reset",
on_click=lambda e: self.set_state(simulation_time=0)),
),
plotting.Figure(lambda figure: self.plot(figure)),
ed.View(layout="row", style={"margin": 10})(
ed.Label("Angular Frequency"),
ed.Slider(value=self.angular_frequency,
min_value=1,
max_value=10,
on_change=lambda value: self.set_state(
angular_frequency=value, simulation_time=0)),
ed.Label("Damping Factor"),
ed.Slider(value=self.damping,
min_value=-3,
max_value=0,
on_change=lambda value: self.set_state(
damping=value, simulation_time=0)),
),
# We position the ball and the centroid using absolute positioning.
# The label and ball offsets are different since we have to take into-account the size of the ball
ed.View(layout="none",
style={
"width": 720,
"height": 10,
"margin-top": 40
})
(
ed.Icon("bowling-ball",
size=20,
color=(255, 0, 0, 255),
style={
"left":
350 + 200 * self.calculate_harmonic_motion(
self.simulation_time)
}),
ed.Label("|",
style={
"left": 356,
"font-size": 20,
"color": "blue"
}),
)))
def render(self):
child_style = {"align": "top", "margin-left": 20}
if self.collapsed:
child_style["height"] = 0
return ed.View(layout="column", style={"align": "top"})(
Collapsible(root=self.props.root,
on_click=self.props.on_click,
toggle=self.toggle,
collapsed=self.collapsed).set_key("root"),
ed.View(layout="column", style=child_style)(*[
comp.set_key(str(i))
for i, comp in enumerate(self.cached_children)
]).set_key("children"))
def render(self):
if self.props.side == "bid":
color = "rgba(50, 50, 255, 1)"
else:
color = "rgba(255, 50, 50, 1)"
price_box_style = dict(stylesheet.price_box)
size_box_style = dict(stylesheet.size_box)
size_bar_style = dict(stylesheet.size_bar)
size_box_style["background-color"] = color
size_bar_style.update({
"background-color": color,
"width": "%spx" % (self.props.size / 5),
})
if self.props.last:
price_box_style["border-bottom"] = "1px solid black"
size_box_style["border-bottom"] = "1px solid black"
return ed.View(layout="row",
style={
"padding": "0px",
"width": "360px",
"align": "left"
})(ed.Label(self.props.price,
style=price_box_style).set_key("price"),
ed.Label(self.props.size,
style=size_box_style).set_key("size"),
ed.Label("",
style=size_bar_style).set_key("vis_size"))
def render(self):
component = self.props.component
module = inspect.getmodule(component.__class__)
lineno = None
try:
lineno = inspect.getsourcelines(component.__class__)[1]
except:
pass
heading_style = {"font-size": "16px", "margin": 10, "margin-bottom": 0}
return ed.View(
layout="column",
style={
"align": "top",
"min-width": 450,
"min-height": 450
})(
ed.Label(component.__class__.__name__,
selectable=True,
style={
"font-size": "20px",
"margin": 10
}).set_key("class_name"),
ed.Label("Class defined in " + module.__file__ + ":" +
str(lineno),
selectable=True,
style={
"margin-left": 10
}).set_key("file"),
ed.Label("Props", style=heading_style).set_key("props_header"),
PropsView(component.props).set_key("_props_view"),
ed.Label("State", style=heading_style).set_key("state_header"),
StateView(component).set_key("_state_view"),
)
def render(self):
return ed.View()(
ed.View(
style={
"height": 200,
"width": 200,
"background-color": "red"
},
on_mouse_enter=lambda e: self.set_state(entered=True),
on_mouse_leave=lambda e: self.set_state(entered=False),
on_mouse_down=lambda e: self.set_state(pressed=True),
on_mouse_up=lambda e: self.set_state(pressed=False),
on_mouse_move=lambda e: self.set_state(pos=(e.x(), e.y())))(
ed.Label("TESTING"), ),
ed.Label("Entered" if self.entered else ""),
ed.Label("Pressed" if self.pressed else ""),
ed.Label(self.pos),
)
def render(self):
return ed.View()(
ed.Label(self.a),
ed.Label(self.b),
ed.Slider(self.a,
min_value=0,
max_value=1,
on_change=self._on_change),
ed.Button("Update b",
on_click=lambda e: self.set_state(b=self.b + 1)),
)
def render(self):
return ed.View(layout="column")(
ed.View(layout="row",
style={
"align": "left",
"margin-left": "10px"
})(
ed.Icon(name="chart-line", size=14).set_key("Icon"),
ed.Label("Market Data Viewer",
style={
"margin-left": "5px"
}).set_key("Label"),
ed.IconButton(
name="pause" if self.playing else "play",
style=stylesheet.play_button,
size=10,
on_click=self.play,
).set_key("Play"),
).set_key("Controls"),
Book(self.book).set_key("Book"),
)
def render(self):
if self.props.level > 0:
layout = "row" if self.props.level % 2 == 0 else "column"
return ed.View(layout=layout)(
RecurseTree(level=self.props.level - 1,
t=self.props.t).set_key("0"),
RecurseTree(level=self.props.level - 1,
t=self.props.t).set_key("1"),
)
else:
return ed.View(layout="row")(
ed.View(
style={
"background-color": "rgba(255, 255, 0, 1)",
"width": "25px",
"height": "25px",
"min-height": "25px",
"min-width": "25px",
"max-width": "25px"
}).set_key("0"),
ed.Label("%.02f" % self.props.t).set_key("1"),
)
def render(self):
from_text = self.current_text
to_text = "%.3f" % (str_to_float(from_text) * self.props.factor)
from_label_style = {"width": 170}
to_label_style = {"margin-left": 20, "width": 200}
input_style = {"padding": 2, "width": 120}
return ed.View(layout="row", style={"margin": 10, "width": 560})(
Label(f"Measurement in {self.props.from_unit}:", style=from_label_style),
TextInput(from_text, style=input_style,
on_change=lambda text: self.set_state(current_text=text)),
Label(f"Measurement in {self.props.to_unit}: {to_text}", style=to_label_style),
)
def render(self):
if self.must_refresh or self._cached_tree is None:
self._cached_tree = self._build_tree(self.root_component)
return ed.View(layout="row")(
ed.View(layout="column",
style={
"align": "top",
"width": 251,
"border-right": "1px solid gray"
})(
ed.View(layout="row",
style={
"align": "left",
"height": 30
})(ed.Label("Edifice Inspector",
style={
"font-size": 18,
"margin-left": 10,
"width": 160
}).set_key("title"),
ed.Icon("sync-alt",
size=20,
on_click=lambda e: self._refresh,
tool_tip="Reload component tree").
set_key("refresh")).set_key("heading"),
ed.ScrollView(layout="column",
style={
"width": 250,
"min-height": 450,
"margin-top": 10
})(self._cached_tree).set_key("tree"),
).set_key("left_pane"),
ed.View(
layout="column", style={
"min-width": 450,
"min-height": 450
})(self.selected
and ComponentView(self.selected).set_key("component_view")).
set_key("right_pane"))
def render(self):
book = self.props.book
sizes = book["sizes"]
market_price = book["price"]
return ed.View(
layout="column",
style={
"margin": "10px",
"padding": "0px",
"width": 360
})(*[
PriceLevel(price=p,
size=sizes[p],
side="bid" if p < market_price else "ask",
last=(p == 1)).set_key(str(p))
for p in range(20, 0, -1)
])
def render(self):
state = dict((k, v) for (k, v) in vars(self.props.component).items()
if k[0] != "_")
return ed.ScrollView(
layout="column", style={
"align": "top",
"margin-left": 15
})(*[
ed.View(layout="row", style={"align": "left"})(
ed.Label(key + ":",
selectable=True,
style={
"font-weight": 600,
"width": 140
}).set_key("key"),
ed.Label(state[key], selectable=True, style={}).set_key(
"value"),
).set_key(key) for key in state
])
def render(self):
try:
selected = current_selection.subscribe(self,
id(self.props.root)).value
except KeyError:
selected = False
root_style = {"margin-left": 5}
if selected:
root_style["background-color"] = SELECTION_COLOR
return ed.View(layout="row", style={"align": "left"})(
ed.Icon(
"caret-right",
rotation=0 if self.props.collapsed else 90,
on_click=self.props.toggle,
).set_key("caret"),
ed.Label(self.props.root.__class__.__name__,
style=root_style,
on_click=self.props.on_click).set_key("title"),
)
def render(self):
props = self.props.props
return ed.ScrollView(
layout="column", style={
"align": "top",
"margin-left": 15
})(*[
ed.View(layout="row", style={"align": "left"})(
ed.Label(
key + ":",
selectable=True,
style={
"font-weight": 600,
"width": 140
},
).set_key("key"),
ed.Label(props[key], selectable=True, style={}).set_key(
"value"),
).set_key(key) for key in props._keys
])
def render(self):
values = ["option_price", "delta", "gamma", "theta", "vega",]
days_to_maturity = None
if self.expiry:
days_to_maturity = int(days_till_expiration(self.expiry)) - 1
expiry_loaded = self.ticker is not None and self.expiries != [] and not self.loading_expiries
option_chain_loaded = (self.ticker is not None and self.option_chain is not None
and not self.loading_option_chain)
if expiry_loaded and option_chain_loaded:
option_chain = self.get_option_chain()
implied_vol = option_chain[option_chain.strike == float(self.strike_price)].impliedVolatility.iloc[0] * 100
if math.isnan(implied_vol):
implied_vol = 1000.0
args = [float(self.strike_price), -float(days_to_maturity),
float(self.last_close_price), 0.01 / 365, implied_vol]
greeks = {
"gamma": black_scholes.gamma(*args),
"theta": black_scholes.theta(*args),
"vega": black_scholes.vega(*args),
}
if self.option_type == "Call":
greeks.update({
"delta": black_scholes.delta(*args),
"option_price": black_scholes.call_price(*args),
})
else:
greeks.update({
"delta": black_scholes.delta(*args) - 1,
"option_price": black_scholes.put_price(*args),
})
return ed.View(style={"align": "top", "margin": 10})(
ed.Label("Loading..." if self.loading_expiries or self.loading_option_chain else "",
style={"margin-bottom": 5}),
ed.View(layout="row", style={"align": "left"})(
ed.View(layout="row", style={"width": 200})(
ed.Label("Ticker"),
ed.TextInput(self.ticker, on_change=self.ticker_changed),
ed.Dropdown(str(self.option_type), options=["Call", "Put"],
on_select=lambda text: self.set_state(option_type=text)),
),
expiry_loaded and ed.View(layout="row", style={"width": 170, "margin-left": 5})(
ed.Label("Expiry"),
ed.Dropdown(str(self.expiry), options=self.expiries, on_select=self.expiry_changed),
),
option_chain_loaded and ed.View(layout="row", style={"width": 150, "margin-left": 5})(
ed.Label("Strike Price"),
ed.Dropdown(str(self.strike_price),
options=list(map(str, self.get_option_chain().strike)) if self.option_chain else [],
on_select=self.strike_changed),
),
),
expiry_loaded and option_chain_loaded and ed.View(layout="row", style={"align": "left"})(
ed.Label("X"),
ed.Dropdown(selection=self.xaxis, options=["days_to_expiration", "stock_price", "implied_vol"],
on_select=lambda text: self.set_state(xaxis=text)),
ed.Label("Y"),
ed.Dropdown(selection=self.yaxis, options=values,
on_select=lambda text: self.set_state(yaxis=text)),
self.xaxis != "stock_price" and ed.Label(f"Stock Price ({self.stock_price:.2f})"),
self.xaxis != "stock_price" and ed.Slider(
self.stock_price, min_value=self.last_close_price / 3, max_value=self.last_close_price * 3 + 1,
on_change=lambda val: self.set_state(stock_price=val),
).set_key("stock_price_slider"),
self.xaxis != "days_to_expiration" and ed.Label(f"Days to Maturity ({self.days_to_maturity:.1f})"),
self.xaxis != "days_to_expiration" and ed.Slider(
self.days_to_maturity, min_value=days_to_maturity, max_value=-0.1,
on_change=lambda val: self.set_state(days_to_maturity=val),
).set_key("maturity_slider"),
self.xaxis != "implied_vol" and ed.Label(f"Implied Vol ({self.implied_vol:.1f})"),
self.xaxis != "implied_vol" and ed.Slider(
self.implied_vol, min_value=implied_vol/2, max_value=implied_vol*2 + 10,
on_change=lambda val: self.set_state(implied_vol=val),
).set_key("vol_slider"),
),
expiry_loaded and option_chain_loaded and ed.View()(
ed.Label("Option Greeks:", style={"font-size": 18}),
ed.View(layout="row")(
ed.Label(f"<b>Days to maturity:</b> {days_to_maturity}"),
ed.Label(f"<b>Stock price:</b> ${self.last_close_price:.2f}\t"),
ed.Label(f"<b>Option price:</b> ${greeks['option_price']:.2f}\t\n"),
ed.Label(f"<b>Implied Vol:</b> {implied_vol:.0f}%\t"),
),
ed.View(layout="row")(
ed.Label(f"<b>Delta:</b> {greeks['delta']:.2f}\t"),
ed.Label(f"<b>Gamma:</b> {greeks['gamma']:.3f}\t"),
ed.Label(f"<b>Theta:</b> {greeks['theta']:.3f}\t"),
ed.Label(f"<b>Vega:</b> {greeks['vega']:.2f}\t"),
)
),
expiry_loaded and option_chain_loaded and plotting.Figure(plot_fun=lambda ax: self.plot(ax)),
)
def render(self):
window_style = {
"background-color": "#404040",
"height": 300,
"width": 242
}
button_style = {
"font-size": 20,
"color": "white",
"height": 60,
"width": 60,
"border": "1px solid #333333"
}
digits_style = button_style | {"background-color": "#777777"}
binary_style = button_style | {
"background-color": "#ff9e00",
"font-size": 30
}
unary_style = button_style | {"background-color": "#595959"}
display_style = {
"font-size": 50,
"height": 70,
"color": "white",
"width": 240,
"align": "right",
"padding-right": 10
}
def make_add_digit(digit):
def add_digit(e):
with self.render_changes():
if self.clear_display:
self.display = "0"
self.clear_display = False
if digit == ".":
try:
# See if adding a decimal is allowed at this point
_ = float(self.display + ".")
self.display += "."
except ValueError:
pass
else:
if self.display == "0":
self.display = str(digit)
else:
self.display += str(digit)
return add_digit
def digit_button(digit, double_width=False):
# Create digits buttons, include the decimal point
button_style = digits_style.copy()
if double_width:
button_style["width"] = 2 * button_style["width"]
return ed.Button(str(digit),
style=button_style,
on_click=make_add_digit(digit))
def apply_binary_operand(operator):
with self.render_changes():
self.clear_display = True
if self.previous_operator is None or self.previous_operator == "=":
self.stored_value = float(self.display)
else:
self.stored_value = OPERATORS[self.previous_operator](
self.stored_value, float(self.display))
self.display = "%.4f" % self.stored_value
self.previous_operator = operator
def binary_button(symbol):
# Qt layout is sometimes unintuitive, but you can definitely hack around it!
button_style = binary_style.copy()
return ed.Button(symbol,
style=button_style,
on_click=lambda e: apply_binary_operand(symbol))
def unary_button(symbol):
def apply_unary_operand(operator):
with self.render_changes():
self.clear_display = True
self.display = "%.4f" % OPERATORS[operator](float(
self.display))
return ed.Button(symbol,
style=unary_style,
on_click=lambda e: apply_unary_operand(symbol))
def key_press(e):
if ord('0') <= e.key() <= ord('9'):
make_add_digit(e.key() - ord('0'))(None)
elif e.text() in ['+', '-', '*', '/']:
apply_binary_operand(e.text())
elif e.key() == ed.Key.Key_Return:
apply_binary_operand("=")
return ed.Window(title="Calculator")(ed.View(
layout="column", style=window_style, on_key_down=key_press)(
ed.Label(self.display, style=display_style),
ed.GridView(layout="""cs%/
789*
456-
123+
00.=""")(
unary_button("AC").set_key("c"),
unary_button("+/-").set_key("s"),
unary_button("%").set_key("%"),
binary_button("÷").set_key("/"),
digit_button(7).set_key("7"),
digit_button(8).set_key("8"),
digit_button(9).set_key("9"),
binary_button("×").set_key("*"),
digit_button(4).set_key("4"),
digit_button(5).set_key("5"),
digit_button(6).set_key("6"),
binary_button("-").set_key("-"),
digit_button(1).set_key("1"),
digit_button(2).set_key("2"),
digit_button(3).set_key("3"),
binary_button("+").set_key("+"),
digit_button(0, double_width=True).set_key("0"),
digit_button(".").set_key("."),
binary_button("=").set_key("="),
)))
def render(self):
return ed.View(layout="column", style={})(
ConversionWidget("meters", "feet", METERS_TO_FEET),
ConversionWidget("feet", "meters", 1 / METERS_TO_FEET),
)
def render(self):
return ed.View(on_key_down=self.key_down)(ed.Label(self.text))