feat: barcode printing

utils/pdf/pdf_generator.py

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+import os
+
+from reportlab.lib.pagesizes import mm
+from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle
+from reportlab.pdfbase import pdfmetrics
+from reportlab.pdfbase.ttfonts import TTFont
+from reportlab.platypus import SimpleDocTemplate
+
+from constants import APP_PATH
+
+
+class PDFGenerator:
+    def __init__(self, page_width: int, page_height: int):
+        ASSETS_FOLDER = os.path.join(APP_PATH, "assets")
+        FONTS_FOLDER = os.path.join(ASSETS_FOLDER, "fonts")
+        FONT_FILE_PATH = os.path.join(FONTS_FOLDER, "DejaVuSans.ttf")
+        self.page_width = page_width * mm
+        self.page_height = page_height * mm
+        self.number_of_spacing_pages = 1
+
+        pdfmetrics.registerFont(TTFont("DejaVuSans", FONT_FILE_PATH))
+
+        # Get standard styles and create a new style with a smaller font size
+        styles = getSampleStyleSheet()
+        self.small_style = ParagraphStyle(
+            "Small",
+            parent=styles["Normal"],
+            fontName="DejaVuSans",  # Specify the new font
+            fontSize=6,
+            leading=7,
+            spaceAfter=2,
+            leftIndent=2,
+            rightIndent=2,
+        )
+
+    # Создание документа с указанным размером страницы
+    def _create_doc(self, buffer):
+        return SimpleDocTemplate(
+            buffer,
+            pagesize=(self.page_width, self.page_height),
+            rightMargin=1 * mm,
+            leftMargin=1 * mm,
+            topMargin=1 * mm,
+            bottomMargin=1 * mm,
+        )