first actualy working version

exporter.py

@@ -0,0 +1,69 @@
+from tkinter import filedialog
+from PIL import Image
+import numpy as np
+
+
+def export(char_res, chars):
+
+    export_path = filedialog.askdirectory(
+        title="Choose folder where exported pages will be saved."
+    )
+
+    if export_path == "":
+        print("\nExport canceled.\n")
+        return
+
+
+    char_res = np.array(char_res, dtype=np.uint16)
+    chars = tuple(chars.items())
+
+
+    # there will be 256 characters per page
+
+    last_char_idx = len(chars) - 1
+
+    page_res = char_res * 16
+
+    page = 0
+    page_char_x = 0
+    page_char_y = 0
+    for char_idx, char in enumerate(chars):
+        if page_char_x == 0 and page_char_y == 0:
+            page_arr = np.zeros(page_res, dtype=bool)
+
+            char_map_string = ""
+
+        char_string, char_bitmap = char
+
+
+        # put char_bitmap onto page_img at correct position
+        page_arr[
+            page_char_x * char_res[0] : (page_char_x + 1) * char_res[0],
+            page_char_y * char_res[1] : (page_char_y + 1) * char_res[1]
+        ] = char_bitmap
+
+        char_map_string += char_string
+
+        page_char_x += 1
+
+        if page_char_x == 16:
+            page_char_x = 0
+            page_char_y += 1
+
+        if page_char_y == 16 or char_idx == last_char_idx:
+            ## save page
+
+            # numpy array to 1 bit image
+            page_img = Image.fromarray(page_arr.T * 255).convert("1")
+
+            # save page
+            page_img.save(f"{export_path}/page_{page}.png")
+
+            # save char map
+            with open(f"{export_path}/page_{page}.txt", "w", encoding="utf-32") as f:
+                f.write(char_map_string)
+
+            page += 1
+            page_char_y = 0
+            
+    print("\nExport finished.\n")