Code folding - Githubissues

show folding marks (purely based on indentation level increases rn)
class LineNumbers(Canvas):
def __init__(self, master, text=None, *args, **kwargs):
    super().__init__(master, *args, **kwargs)
    self.config(width=65, bd=0, highlightthickness=0)
    self.text = text
    self.text.bind("<Configure>", self.redraw)

def get_indentation_level(self, line):
    """Get the indentation level of a given line."""
    return len(line) - len(line.lstrip())

def redraw(self, *_):
    self.delete(tk.ALL)

    prev_indent = 0
    i = self.text.index("@0,0")
    while True:
        dline = self.text.dlineinfo(i)
        if dline is None:
            break

        y = dline[1]
        linenum = str(i).split(".")[0]

        # Get the text content of the current line
        line_content = self.text.get(f"{linenum}.0", f"{linenum}.end")
        current_indent = self.get_indentation_level(line_content)

        # Determine if the current line has more indentation than the previous line
        if current_indent > prev_indent:
            line_num_with_indent = f"{linenum} +"
        else:
            line_num_with_indent = linenum

        # to highlight the current line
        curline = self.text.dlineinfo(tk.INSERT)
        cur_y = curline[1] if curline else None

        if not cur_y:
            i = self.text.index(f"{i}+1line")
            continue

        self.create_text(40, y, anchor=tk.NE, text=line_num_with_indent, font=("Consolas", 14), tag=i)

        # Update the previous indentation level
        prev_indent = current_indent
        i = self.text.index(f"{i}+1line")
tomlin7 / cupcake

Code folding #33
