123 lines
3.5 KiB
Python
123 lines
3.5 KiB
Python
import tkinter as tk
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from python_symb.Expressions.expr import Expr
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from python_symb.MathTypes.symbols import Var
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class Visual:
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def __init__(self):
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self.root = tk.Tk()
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self.root.title("Visual")
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self.root.geometry("1200x1200")
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# Add a canvas on the left side of the window
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self.tree_canvas = tk.Canvas(self.root, width=800, height=800, bg="white")
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self.tree_canvas.pack(side=tk.LEFT, expand=False)
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# Create right frame
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self.right_frame = tk.Frame(self.root, width=300, height=500, background="grey")
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# Add a label with the text "Variables" on top of the right frame, should not take all the space
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self.variables_label = tk.Label(self.right_frame, text="Variables:")
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self.variables_label.pack()
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# Add an entry below the label with default text x y z"
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self.variables_entry = tk.Entry(self.right_frame, width=50)
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self.variables_entry.insert(0, "x y z")
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self.variables_entry.pack()
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# Add a button below the entry with the text "Update variables"
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self.variables_button = tk.Button(self.right_frame, text="Update variables", command=self.update_variables)
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self.variables_button.pack()
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# Add a label with the text "Input" on top of the right frame, should not take all the space
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self.input_label = tk.Label(self.right_frame, text="Input (infix string):")
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# Add a entry below the label with default text "(5+2)*3"
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self.input_entry = tk.Entry(self.right_frame, width=50)
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self.input_entry.insert(0, "(5+2)*3")
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# Add a button below the entry with the text "To Tree"
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self.input_button = tk.Button(self.right_frame, text="To Tree", command=self.show_tree)
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# Pack the widgets, make sure they are not expanding, and all are fixed size
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self.input_label.pack()
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self.input_entry.pack()
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self.input_button.pack()
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self.right_frame.pack(side=tk.LEFT, expand=False)
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self.root.mainloop()
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def update_variables(self):
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# Get the text from the entry
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text = self.variables_entry.get()
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# Create the variables
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variables = text.split()
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for v in variables:
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if v not in Var.instances:
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Var(v)
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def show_tree(self):
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# Get the text from the entry
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text = self.input_entry.get()
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# Clear the canvas
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self.tree_canvas.delete("all")
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tree = Expr.from_infix_str(text)
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# Draw the tree
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self.draw_tree(tree)
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def create_circle(self, x, y, r, color): # center coordinates, radius
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x0 = x - r
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y0 = y - r
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x1 = x + r
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y1 = y + r
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return self.tree_canvas.create_oval(x0, y0, x1, y1, fill=color)
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def draw_tree(self, tree, first_x=400, first_y=50, x_offset=250, y_offset=200, radius=30, fact_mult=0.75):
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print(tree)
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children = tree.children
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n = len(children)
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for i in range(n):
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child = children[i]
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x = first_x + (i - (n - 1) / 2) * x_offset
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y = first_y + y_offset
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#Link the node to the parent
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self.tree_canvas.create_line(first_x, first_y, x, y)
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# Draw the node
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self.draw_tree(child, int(x), y, x_offset*fact_mult, y_offset*fact_mult, radius=radius*fact_mult)
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# Draw the root node
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self.create_circle(first_x, first_y, radius, "red")
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self.tree_canvas.create_text(first_x, first_y, text=str(tree.value))
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if __name__ == "__main__":
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Visual()
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