Check for italic angle in Face::is_italic.

Author: RazrFalcon

CHANGELOG.md

@@ -5,6 +5,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
+### Changed
+- `Face::is_italic` checks for italic angle as well.
+- `Face::italic_angle` returns just a `f32` and not `Option<f32>` now.
 
 ## [0.24.1] - 2024-08-05
 ### Added

src/lib.rs

@@ -1402,21 +1402,14 @@ impl<'a> Face<'a> {
     /// Returns `false` when OS/2 table is not present.
     #[inline]
     pub fn is_regular(&self) -> bool {
-        self.tables
-            .os2
-            .map(|s| s.style() == Style::Normal)
-            .unwrap_or(false)
+        self.style() == Style::Normal
     }
 
     /// Checks that face is marked as *Italic*.
-    ///
-    /// Returns `false` when OS/2 table is not present.
     #[inline]
     pub fn is_italic(&self) -> bool {
-        self.tables
-            .os2
-            .map(|s| s.style() == Style::Italic)
-            .unwrap_or(false)
+        // A face can have a Normal style and a non-zero italic angle, which also makes it italic.
+        self.style() == Style::Italic || self.italic_angle() != 0.0
     }
 
     /// Checks that face is marked as *Bold*.
@@ -1432,10 +1425,7 @@ impl<'a> Face<'a> {
     /// Returns `false` when OS/2 table is not present or when its version is < 4.
     #[inline]
     pub fn is_oblique(&self) -> bool {
-        self.tables
-            .os2
-            .map(|s| s.style() == Style::Oblique)
-            .unwrap_or(false)
+        self.style() == Style::Oblique
     }
 
     /// Returns face style.
@@ -1490,10 +1480,13 @@ impl<'a> Face<'a> {
 
     /// Returns face's italic angle.
     ///
-    /// Returns `None` when `post` table is not present.
+    /// Returns `0.0` when `post` table is not present.
     #[inline]
-    pub fn italic_angle(&self) -> Option<f32> {
-        self.tables.post.map(|table| table.italic_angle)
+    pub fn italic_angle(&self) -> f32 {
+        self.tables
+            .post
+            .map(|table| table.italic_angle)
+            .unwrap_or(0.0)
     }
 
     // Read https://github.com/freetype/freetype/blob/49270c17011491227ec7bd3fb73ede4f674aa065/src/sfnt/sfobjs.c#L1279