✨ Add next button

Fix #2

image.py

@@ -13,12 +13,16 @@ class ImageWindow:
         self.images = []
         self.current_image = None
         self.image_label = None
+        toolbar = Frame(self.window, bd=1, relief=RAISED)
+        toolbar.pack(side=BOTTOM, fill=X)
         self.timer = 0
         self.timer_label = None
         self.timer_check = None
+        next_button = Button(toolbar, relief=FLAT, compound=LEFT, text="next ➡️", command=self.next_image)
+        next_button.pack(side=LEFT, padx=0, pady=0)
         self.image_label = Label(self.window)
         self.image_label.pack(side="top", fill="both", expand=1)
-        self.timer_label = Label(self.window, text=self.timer)
+        self.timer_label = Label(toolbar, text=self.timer)
         self.timer_label.pack(side=BOTTOM)
 
     def update_timer(self, current):
@@ -33,6 +37,11 @@ class ImageWindow:
                 self.window.update()
 
                 return
+            self.next_image()
+
+    def next_image(self):
+        if self.timer_check is not None:
+            self.window.after_cancel(self.timer_check)
         self.display_new_image()
         self.display_new_timer()
 
@@ -44,8 +53,7 @@ class ImageWindow:
         # canvas = Canvas(self.window)
         # canvas.pack(fill=BOTH, expand=1)
 
-        self.display_new_image()
-        self.display_new_timer()
+        self.next_image()
 
     def display_new_timer(self):
         self.timer_label.configure(text=self.timer)
@@ -56,6 +64,8 @@ class ImageWindow:
         self.images.pop(0)
         self.current_image = Image.open(image_path)
 
+        self.resize_image()
+
         image_to_display = ImageTk.PhotoImage(self.current_image)
 
         self.image_label.configure(image=image_to_display)