Added get_italic_angle method.

README.md

@@ -46,6 +46,7 @@ font = Font("fonts/MyFont.ttf")
 -   [`get_format`](#get_format)
 -   [`get_fingerprint`](#get_fingerprint)
 -   [`get_image`](#get_image)
+-   [`get_italic_angle`](#get_italic_angle)
 -   [`get_name`](#get_name)
 -   [`get_names`](#get_names)
 -   [`get_style_flag`](#get_style_flag)
@@ -178,6 +179,17 @@ some text using the given options.
 img = font.get_image(text, size, color=(0, 0, 0, 255), background_color=(255, 255, 255, 255))
 ```
 
+-   #### get_italic_angle
+```python
+"""
+Gets the font italic angle.
+
+:returns: The angle value including backslant, italic and roman flags.
+:rtype: dict or None
+"""
+italic_angle = font.get_italic_angle()
+```
+
 -   #### get_name
 ```python
 """

fontbro/font.py

@@ -390,6 +390,26 @@ def get_image(
             draw.text((0, 0), text, font=img_font, fill=color)
             return img
 
+    def get_italic_angle(self):
+        """
+        Gets the font italic angle.
+
+        :returns: The angle value including backslant, italic and roman flags.
+        :rtype: dict or None
+        """
+        font = self.get_ttfont()
+        post = font.get("post")
+        if not post:
+            return None
+        italic_angle_value = post.italicAngle
+        italic_angle = {
+            "backslant": italic_angle_value > 0,
+            "italic": italic_angle_value < 0,
+            "roman": italic_angle_value == 0,
+            "value": italic_angle_value,
+        }
+        return italic_angle
+
     @classmethod
     def _get_name_id(cls, key):
         if isinstance(key, int):

tests/test_italic_angle.py

@@ -0,0 +1,37 @@
+# -*- coding: utf-8 -*-
+
+from fontbro import Font
+from tests import AbstractTestCase
+
+
+class ItalicAngleTestCase(AbstractTestCase):
+    """
+    This class describes an italic angle test case.
+    """
+
+    def _test_font_italic_angle(self, filepath, **kwargs):
+        font = self._get_font(filepath)
+        italic_angle = font.get_italic_angle()
+        # print(filepath, weight)
+        expected_italic_angle = {
+            "backslant": False,
+            "italic": False,
+            "roman": False,
+            "value": 0.0,
+        }
+        expected_italic_angle.update(**kwargs)
+        self.assertEqual(italic_angle, expected_italic_angle)
+
+    def test_get_italic_angle_with_roman_font(self):
+        self._test_font_italic_angle(
+            filepath="/Roboto_Mono/static/RobotoMono-Regular.ttf",
+            value=0,
+            roman=True,
+        )
+
+    def test_get_italic_angle_with_italic_font(self):
+        self._test_font_italic_angle(
+            filepath="/Roboto_Mono/static/RobotoMono-Italic.ttf",
+            value=-10,
+            italic=True,
+        )