♻️ Refactor classes to avoid big ones

Fix #20

src/element/image.py

@@ -0,0 +1,50 @@
+import copy
+from tkinter import *
+from PIL import ImageTk, Image, ImageOps
+
+
+class ImagePlaceholder:
+    def __init__(self, image_window, images):
+        self.current_image = None
+        self.current_original_image = None
+        self.image_window = image_window
+        self.images = images.copy()
+
+        self.image_label = Label(self.image_window.window)
+        self.image_label.bind('<Configure>', lambda event: self.resize_image(True))
+        self.image_label.pack(side=TOP, fill=BOTH, expand=1)
+
+    def display_new_image(self):
+        image_path = self.images[0]
+        self.images.pop(0)
+        self.current_original_image = Image.open(image_path)
+        self.current_image = copy.deepcopy(self.current_original_image)
+        self.apply_options()
+
+    def resize_image(self, reload=False):
+        ma = self.image_window.window.winfo_toplevel()
+        w, h = ma.winfo_width(), ma.winfo_height()
+
+        if w < 21 or h < 21:
+            w = 1280
+            h = 1024
+        self.current_image.thumbnail((w - 20, h - 20), Image.ANTIALIAS)
+
+        if reload:
+            self.load_widget()
+
+    def apply_options(self):
+        self.current_image = copy.deepcopy(self.current_original_image)
+
+        if self.image_window.option["bw"]:
+            self.current_image = self.current_image.convert("L")
+
+        if self.image_window.option["mirror"]:
+            self.current_image = ImageOps.mirror(self.current_image)
+
+        self.resize_image(True)
+
+    def load_widget(self):
+        image_to_display = ImageTk.PhotoImage(self.current_image)
+        self.image_label.configure(image=image_to_display)
+        self.image_label.image = image_to_display