feat: Add Web iface with QR codes

labeler/infra/renderer.py

@@ -1,3 +1,4 @@
+import qrcode
 import textwrap
 from string import ascii_letters
 
@@ -7,9 +8,16 @@ from labeler.domain.objects import Image, LabelDefinition
 from labeler.interfaces import Renderer
 
 
+DPI = 360.0
+
+
+def points_to_pixels(point_size: float):
+    return int(point_size * (72 / DPI))
+
+
 class PILRenderer(Renderer):
     def __init__(self):
-        self.font_path = "/Library/Fonts/Arial.ttf"
+        self.font_path = "/Library/Fonts/Arial Unicode.ttf"
 
     def render_label(self, label_definition: LabelDefinition) -> Image:
         if label_definition.length is None:
@@ -47,7 +55,7 @@ class PILRenderer(Renderer):
 
         while text_height > 0:
             font = ImageFont.truetype(
-                "/Library/Fonts/Arial.ttf",
+                "/Library/Fonts/Arial Unicode.ttf",
                 text_height,
             )
             if lines_to_print > 1:
@@ -74,6 +82,42 @@ class PILRenderer(Renderer):
         )
         return im
 
+    def render_qrcode(self, label_definition: LabelDefinition) -> Image:
+        width = label_definition.pixel_width
+        length = label_definition.pixel_length
+        text = label_definition.text
+        font = self.__get_font_for_qr()
+        qr = qrcode.QRCode(box_size=7)
+        qr.add_data(f"https://hs3.pl/db/{text}")
+        qr.make(fit=True)
+        qr_img = qr.make_image()
+        print(width, length)
+        pil_image = PILImage.new("1", (width, length), 1)
+        draw = ImageDraw.Draw(pil_image)
+        pil_image.paste(qr_img)
+        draw.text(
+            (width / 2, 232),
+            "HS3-DB",
+            font=font,
+            fill=0,
+            anchor="mm",
+            align="center",
+        )
+        draw.text(
+            (20, 232 + 34),
+            f"ID: {text}",
+            font=font,
+            fill=0,
+            align="left",
+        )
+
+        return Image.from_pil(pil_image.transpose(PILImage.Transpose.ROTATE_90))
+
+    def __get_font_for_qr(self):
+        font_size = int(360 / 9)
+
+        return ImageFont.truetype("fonts/SourceCodePro-SemiBold.ttf", font_size)
+
     def __get_font(self, text: str, max_width: int, max_length: int):
         font_size = max_width
         step = max_width // 2