OSPlugin/GraphBase.py at main · StreamController/OSPlugin · GitHub

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from threading import Thread

from src.backend.PluginManager.ActionBase import ActionBase

from src.backend.DeckManagement.DeckController import DeckController

from src.backend.PageManagement.Page import Page

from src.backend.PluginManager.PluginBase import PluginBase

import matplotlib.pyplot as plt

import matplotlib

from multiprocessing import Process, Queue

# Use different backend to prevent errors with running plt in different threads

matplotlib.use('agg')

from matplotlib.backends.backend_agg import FigureCanvasAgg as FigureCanvas

from PIL import Image

import io

# Import gtk

import gi

gi.require_version("Gtk", "4.0")

gi.require_version("Adw", "1")

from gi.repository import Gtk, Adw, Gdk

# Import globals

import globals as gl

from src.Signals import Signals

class GraphBase(ActionBase):

def __init__(self, *args, **kwargs):

super().__init__(*args, **kwargs)

self.percentages: list[float] = []

self.task_queue = Queue()

self.result_queue = Queue()

# self.process = Process(target=self.worker, args=(self.task_queue, self.result_queue), name="GraphBaseCreator")

self.process = GraphCreator(task_queue=self.task_queue, result_queue=self.result_queue)

self.process.start()

gl.signal_manager.connect_signal(Signals.AppQuit, self.stop_process)

def stop_process(self, *args):

print("stop graph base")

self.task_queue.put((None, None))

def set_percentages_lenght(self, length: int):

if len(self.percentages) > length:

self.percentages = self.percentages[-length:]

elif len(self.percentages) < length:

for _ in range(length - len(self.percentages)):

self.percentages.insert(0, 0)

return self.percentages

def get_graph(self) -> Image:

## Get vars

settings = self.get_settings()

time_period = settings.get("time-period", 15)

self.set_percentages_lenght(time_period)

self.task_queue.put((settings, self.percentages))

img = self.result_queue.get()

return img

def show_graph(self):

image = self.get_graph()

if image is None:

return

self.set_media(image=image)

def get_custom_config_area(self):

return Gtk.Label(label=self.plugin_base.lm.get("actions.graph-base.memory-warning"), css_classes=["destructive-action"])

def get_config_rows(self) -> list:

self.line_color_row = ColorRow()

self.line_color_row.color_label.set_label("Line Color:")

self.fill_color = ColorRow()

self.fill_color.color_label.set_label("Fill Color:")

self.line_width_row = Adw.SpinRow.new_with_range(1, 30, 1)

self.line_width_row.set_title("Line Width:")

self.time_period_row = Adw.SpinRow.new_with_range(1, 60, 1)

self.time_period_row.set_title("Time Period (s):")

self.dynamic_scaling_row = Adw.SwitchRow(title="Dynamic Y-axis Scaling:")

self.toggle_dynamic_scaling_on_press_row = Adw.SwitchRow(title="Toggle Dynamic Y-axis Scaling on Press:")

## Load defaults:

settings = self.get_settings()

self.fill_color.color_button.set_rgba(self.prepare_color(settings.get("fill-color", [255, 255, 255, 255])))

self.line_color_row.color_button.set_rgba(self.prepare_color(settings.get("line-color", [255, 255, 255, 150])))

self.line_width_row.set_value(settings.get("line-width", 5))

self.time_period_row.set_value(settings.get("time-period", 15))

self.dynamic_scaling_row.set_active(settings.get("dynamic-scaling", False))

self.toggle_dynamic_scaling_on_press_row.set_active(settings.get("toggle-dynamic-scaling-on-press", False))

## Connect signals

self.fill_color.color_button.connect("color-set", self.on_fill_color_change)

self.line_color_row.color_button.connect("color-set", self.on_line_color_change)

self.line_width_row.connect("changed", self.on_line_width_change)

self.time_period_row.connect("changed", self.on_time_period_change)

self.dynamic_scaling_row.connect("notify::active", self.on_dynamic_scaling_change)

self.toggle_dynamic_scaling_on_press_row.connect("notify::active", self.on_dynamic_scaling_toggle_on_press_change)

return [self.line_color_row, self.fill_color, self.line_width_row, self.time_period_row, self.dynamic_scaling_row, self.toggle_dynamic_scaling_on_press_row]

def prepare_color(self, color_values: list[int]) -> Gdk.RGBA:

if len(color_values) == 3:

color_values.append(255)

color = Gdk.RGBA()

color.parse(f"rgba({color_values[0]}, {color_values[1]}, {color_values[2]}, {color_values[3]})")

return color

def on_fill_color_change(self, button):

color = self.fill_color.color_button.get_rgba()

green = round(color.green * 255)

blue = round(color.blue * 255)

red = round(color.red * 255)

alpha = round(color.alpha * 255)

settings = self.get_settings()

settings["fill-color"] = [red, green, blue, alpha]

self.set_settings(settings)

self.show_graph()

def on_line_color_change(self, button):

color = self.line_color_row.color_button.get_rgba()

green = round(color.green * 255)

blue = round(color.blue * 255)

red = round(color.red * 255)

alpha = round(color.alpha * 255)

settings = self.get_settings()

settings["line-color"] = [red, green, blue, alpha]

self.set_settings(settings)

self.show_graph()

def on_line_width_change(self, spin):

settings = self.get_settings()

settings["line-width"] = spin.get_value()

self.set_settings(settings)

self.show_graph()

def on_time_period_change(self, spin):

settings = self.get_settings()

settings["time-period"] = int(spin.get_value())

self.set_settings(settings)

self.set_percentages_lenght(int(spin.get_value()))

self.show_graph()

def on_dynamic_scaling_change(self, switch, *args):

settings = self.get_settings()

settings["dynamic-scaling"] = switch.get_active()

self.set_settings(settings)

self.show_graph()

def on_dynamic_scaling_toggle_on_press_change(self, switch, *args):

settings = self.get_settings()

settings["toggle-dynamic-scaling-on-press"] = switch.get_active()

self.set_settings(settings)

self.show_graph()

def on_key_down(self):

settings = self.get_settings()

if not settings.get("toggle-dynamic-scaling-on-press", False):

return

settings["dynamic-scaling"] = not settings.get("dynamic-scaling", False)

self.set_settings(settings)

if hasattr(self, "dynamic_scaling_row"):

self.dynamic_scaling_row.set_active(settings["dynamic-scaling"])

self.show_graph()

def on_removed_from_cache(self) -> None:

self.task_queue.put((None, None))

class ColorRow(Adw.PreferencesRow):

def __init__(self):

super().__init__()

self.main_box = Gtk.Box(orientation=Gtk.Orientation.HORIZONTAL, hexpand=True,

margin_top=10, margin_bottom=10, margin_start=15, margin_end=15)

self.set_child(self.main_box)

self.color_label = Gtk.Label(label="Color:", hexpand=True, xalign=0)

self.main_box.append(self.color_label)

self.color_button = Gtk.ColorButton(use_alpha=True)

self.main_box.append(self.color_button)

class GraphCreator(Process):

def __init__(self, task_queue: Queue, result_queue: Queue):

super().__init__(daemon=True, name="GraphCreator")

self.task_queue = task_queue

self.result_queue = result_queue

def run(self):

while True:

settings, percentages = self.task_queue.get()

if None in [settings, percentages]:

break

result = self.generate_graph(settings, percentages)

self.result_queue.put(result)

print("GraphCreator stopped")

def generate_graph(self, settings: dict, percentages: list[float]):

line_color = self.conv_color_to_plt(settings.get("line-color", [255, 255, 255, 255]))

fill_color = self.conv_color_to_plt(settings.get("fill-color", [255, 255, 255, 150]))

line_width = settings.get("line-width", 5)

dynamic_scaling = settings.get("dynamic-scaling", False)

# Create a new figure with a transparent background

fig = plt.figure(figsize=(6, 6))

fig.patch.set_alpha(0)

fig.patch.set_facecolor('none')

# Set the FigureCanvas to the backend

canvas = FigureCanvas(fig)

# Plot the data with a transparent background

ax = plt.Axes(fig, [0., 0., 1., 1.])

ax.set_axis_off()

fig.add_axes(ax)

ax.plot(percentages, color=line_color, linewidth=line_width)

ax.fill_between(range(len(percentages)), percentages, color=fill_color[:3], alpha=fill_color[3])

# Hide the spines

for spine in ax.spines.values():

spine.set_visible(False)

# Turn off the axis and set margins to zero

ax.margins(0)

ax.axis('off')

# Set the y-axis to range from 0 to 100

if not dynamic_scaling:

ax.set_ylim(0, 100)

# Draw the canvas and retrieve the buffer

canvas.draw()

buf = io.BytesIO()

canvas.print_png(buf)

# Convert buffer to a Pillow Image

buf.seek(0)

img = Image.open(buf)

# The Pillow Image now has a transparent background

# img.show() # If you want to display the image

# img.save('plot.png') # If you want to save the image

plt.close() # Close the plot to free resources

# result_queue.put(img)

return img

def conv_color_to_plt(self, color: list[int]) -> list[float]:

float_color: list[float] = []

for c in color:

float_color.append(c / 255)

return float_color

OSPlugin/GraphBase.py at main · StreamController/OSPlugin · GitHub

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