window_information.py

from PIL import Image, ImageTk
import tkinter as tki
from diagram import *
import tools as tl


class Window_information:
    def __init__(self, parent_window, images):
        self.parent = parent_window
        self.tk = parent_window.tk
        self.window = tki.Toplevel(self.tk)
        self.window.title("Informations")
        self.window.resizable(height=True, width=True)
        self.window.bind("<Return>", lambda event: self.cmd_commit())
        self.parent.tk.update_idletasks()
        self.MARGIN = 4
        rootx = self.parent.can.winfo_rootx()
        rooty = self.parent.can.winfo_rooty()
        can_height = self.parent.can.winfo_height() * 2 // 3
        win_width, win_height = self.window_dimension(self.parent.tk.geometry())
        self.window.geometry(
            "400x{}+{}+{}".format(
                can_height - 2 * self.MARGIN - 40,
                rootx + win_width - 400 - self.MARGIN,
                rooty + self.MARGIN,
            )
        )
        self.images = images
        self.show_informations()

    def show_informations(self):
        help_grid = []
        frame = tl.ScrollableFrame(self.window)
        help_grid.append(("new", "Create a new file"))
        help_grid.append(("open", "Open a file"))
        help_grid.append(("save", "Save file"))
        help_grid.append(("export", "Export diagram to image (.SVG)"))
        help_grid.append(("move", "Move function or node"))
        help_grid.append(("add_function", "Add a function"))
        help_grid.append(("add_node", "Add a free node"))
        help_grid.append(("group", "Add a group of elements"))
        help_grid.append(("add_link", "Connect two nodes"))
        help_grid.append(("edit", "Edit element (node or function)"))
        help_grid.append(("erase", "Delete element (node, function or connexion)"))
        help_grid.append(("undo", "Undo"))
        help_grid.append(("redo", "Redo"))
        help_grid.append(("auto", "Place automaticly the objects on the screen"))
        help_grid.append(("configuration", "Edit settings"))
        help_grid.append(("information", "Show informations"))

        for name, description in help_grid:
            line = tki.Frame(frame.scrollable_frame)
            lbl_img = tki.Label(line, image=self.images[name])
            lbl_txt = tki.Label(line, text=description, justify=tki.LEFT, anchor="w")
            lbl_img.pack(side=tki.LEFT, fill="both")
            lbl_txt.pack(fill="both")
            line.pack(fill="both", expand=True)
        title = tki.Label(
            frame.scrollable_frame,
            text="functions_diagram by Eric Buonocore\n2023",
            anchor="w",
        )
        title.pack(side=tki.BOTTOM)
        image_licence = Image.open("images/licence-by-nc-sa.png")
        image_licence_tk = ImageTk.PhotoImage(image_licence)
        label_image = tki.Label(frame.scrollable_frame, image=image_licence_tk)
        # Keep a reference to avoid having it erased by the garbage-collector
        label_image.image = image_licence_tk
        label_image.pack(side=tki.BOTTOM)
        frame.pack(fill=tki.BOTH, expand=True)

    def cmd_commit(self):
        self.window.destroy()

    def window_dimension(self, geometry: str) -> tuple:
        """Take the geometry string as a parameter.
        Return the tuple (width, height) corresponding to the dimension of the window.
        Return (0, 0) if the the dimension is not find.
        """
        settings = geometry.split("+")
        if len(settings) == 3:
            dimensions = settings[0].split("x")
            if len(dimensions) == 2:
                if dimensions[0].isdigit() and dimensions[1].isdigit():
                    return (int(dimensions[0]), int(dimensions[1]))
        return (0, 0)