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Author: ezek-iel

GUI/Quadratic-Equation-Solver/quad.py

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+import matplotlib.pyplot as plt
+import numpy as np
+
+
+class Quadratic:
+    """Representing a quadratic expression in the form of ax² + bx + c"""
+    
+    def __init__(self,a : float, b : float, c : float) -> None:
+        # A class is created succesfully if the arguments of the class are either float or int
+        if (type(a) == type(0.1) or type(a) == type(1)) and (type(b) == type(0.1) or type(b) == type(1)) and (type(c) == type(0.1) or type(c) == type(1)):
+            self.a = a
+            self.b = b
+            self.c = c
+        else:
+            raise ValueError("Argument must be of type int or float")
+    
+    def __repr__(self) -> str:
+        return "Quad( {0}x² + {1}x + {2} )".format(self.a,self.b,self.c)
+    
+    def solveQuad(self) -> tuple[float,float]:
+        """Solving the expression assuming it is equal to 0 returns a tuple of 2 values"""
+        determinant = ((self.b ** 2) - (4 * self.a * self.c)) ** 0.5
+        firstSolution = ((-1 * self.b) + determinant) / (2 * self.a)
+        secondSolution = ((-1 * self.b) - determinant) / (2 * self.a)
+        return (firstSolution,secondSolution)
+    
+    def evaluate(self, x):
+        """Substitute x for a value and return a string to be called by the eval function"""
+        solution = ((self.a * (x ** 2)) + (self.b * x) + self.c)
+        return solution
+    
+    def drawFigure(self):
+        """Draws the quadratic graph and returns a matplotlib figure"""
+        x_axis = np.linspace(-10,10,50)
+        y_axis = self.evaluate(x_axis)
+
+        figure, axes = plt.subplots()
+        
+        axes.plot(x_axis,y_axis, linewidth = 1)
+        axes.grid(visible = True)
+        axes.set_title(self)
+        axes.xaxis.set_minor_formatter(str(x_axis))
+        return figure
+

GUI/Quadratic-Equation-Solver/ui.py

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+import ttkbootstrap as tb
+from ttkbootstrap.constants import *
+from tkinter import *
+from ttkbootstrap.scrolled import ScrolledFrame
+from quad import Quadratic
+from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2Tk
+from ttkbootstrap.dialogs import Messagebox
+
+# Most variables are named a,b,c according to ax² + bx + c in a quadratic equation
+
+
+def plot():
+
+    # Collect all inputs
+    a_entryInput  = a_entry.get()
+    b_entryInput = b_entry.get()
+    c_entryInput = c_entry.get()
+    
+    try:
+        a = float(a_entryInput)
+        b = float(b_entryInput)
+        c = float(c_entryInput)
+        eqn = Quadratic(a,b,c)
+
+        #--------------------------------------------------------------------------
+        # Background Graph Frame
+        graph_frame = ScrolledFrame(root, width = 800, height = 500)
+        graph_frame.grid(row = 1, column  = 0,pady = 10)
+
+        fig = eqn.drawFigure()
+
+        canvas = FigureCanvasTkAgg(figure = fig, master = graph_frame)
+        canvas.draw()
+        canvas.get_tk_widget().pack()
+
+        toolbar = NavigationToolbar2Tk(canvas, graph_frame)
+        toolbar.update()
+
+        canvas.get_tk_widget().pack()
+        solution_label.config(text = "Solution : x₁ = {0}, x₂ = {1}".format(eqn.solveQuad()[0], eqn.solveQuad()[1]))
+        
+    except:
+        Messagebox.show_error(title = "Error", message = "User entered wrong value")
+ 
+
+
+# Base window widget
+root = tb.Window(themename="vapor")
+root.geometry("720x720")
+root.title("Quadratic Equation Solver")
+
+# Font data
+font = ("Nunito", 12)
+
+# Frame containig the entry for the three arguments
+top_frame = tb.Frame(root)
+top_frame.grid(row = 0, column = 0,padx  = 10, pady = 20)
+
+# Entry for the three arguments
+a_frame = tb.Frame(top_frame)
+a_frame.grid(row = 0, column = 0, padx=5)
+
+a_label = tb.Label(a_frame, text= "a =", font = font)
+a_label.grid(row = 0, column = 0)
+
+a_entry = tb.Entry(a_frame, width = 30, font = font)
+a_entry.grid(row = 0, column = 1)
+
+b_frame = tb.Frame(top_frame)
+b_frame.grid(row = 0, column = 1, padx=5)
+
+b_label = tb.Label(b_frame, text = "b =", font = font)
+b_label.grid(row = 0, column = 0)
+
+b_entry = tb.Entry(b_frame, width = 30, font = font)
+b_entry.grid(row = 0, column = 1)
+
+c_frame = tb.Frame(top_frame)
+c_frame.grid(row = 0, column = 2, padx=5)
+
+c_label = tb.Label(c_frame, text = "c =", font = font)
+c_label.grid(row = 0, column = 0)
+
+c_entry = tb.Entry(c_frame, width = 30, font = font)
+c_entry.grid(row = 0, column = 1)
+
+
+# Button to plot the matplotlib graph
+plot_button = tb.Button(top_frame, width = 70, text = "Plot", command = plot)
+plot_button.grid(row = 1, column = 1, pady = 15)
+
+# Label containing the solution to the equation
+solution_label = tb.Label(root,font = (font[0], 15), text = "")
+solution_label.grid(row = 2, column = 0, pady = 10)
+
+root.mainloop()