fix text not align center issue

main.py

@@ -7,7 +7,7 @@
 from PyQt5 import QtGui
 from PyQt5.QtCore import Qt, QStandardPaths
 from PyQt5.QtGui import QPixmap, QFont, QFontInfo, QFontDatabase
-from PyQt5.QtWidgets import QApplication, QMainWindow, QFileDialog, QFontDialog
+from PyQt5.QtWidgets import QApplication, QMainWindow, QFileDialog, QFontDialog, QMessageBox
 
 from bmp2hex import bmp2hex
 from text2image import ImageGenerate
@@ -97,12 +97,16 @@ def text_to_image(self):
 
         logging.debug(
             f'message {self.message} fontsize {self.font_size} fontFamily {self.font_family}')
-
-        image_name = self.imageGenerate.generate(
-            self.message, self.font_family, self.font_size)
-
-        self.display_dist_image(image_name)
-        self.image_to_lcd(image_name)
+        try:
+            image_name = self.imageGenerate.generate(
+                self.message, self.font_family, self.font_size)
+
+            self.display_dist_image(image_name)
+            self.image_to_lcd(image_name)
+        except:
+            QMessageBox(QMessageBox.NoIcon, 'Open File failed',
+                        'Unable to open the file').exec()
+            pass
 
     def image_to_lcd(self, image_name):
         result = bmp2hex(image_name, 8, 0,

text2image.py

@@ -6,6 +6,7 @@
 import langid
 import numpy as np
 from PIL import Image, ImageDraw, ImageFont
+import time
 
 from bmp2hex import bmp2hex
 
@@ -71,7 +72,8 @@ def generate(self, text, font_family=None, font_size=None):
         print(f'{len(text)}  {font_family} {font_size}')
 
         font = ImageFont.truetype(font_family, font_size)
-        image_name = f'res/image_{text}.bmp'
+        # image_name = f'res/image_{text}.bmp'
+        image_name = f'res/image_{text}_{int(time.time())}.bmp'
         image = Image.new('1', (self.width, self.height), (255))
         draw = ImageDraw.Draw(image)
         # draw.text((0, 8), text, font=font, fill=(0))
@@ -83,7 +85,7 @@ def generate(self, text, font_family=None, font_size=None):
             if index == 0:
                 w, h = font.getsize(item)
                 x = (self.width - w)/2
-                top = self.height * 0.25 // len(text)
+                top = (self.height - len(text)*h)/2
 
             draw.text((x, h*index + top), item, font=font, fill=(0))
         # Wrap the `text` string into a list of `CHAR_LIMIT`-character strings