From 52a63dc731119517002cfa47dbfc7452496f5730 Mon Sep 17 00:00:00 2001
From: Thomas Churchman <thomas@kepow.org>
Date: Thu, 25 Jul 2024 14:20:49 +0200
Subject: [PATCH] feat(font-enumeration): add style, weight and stretch for
 windows (untested)

---
 font-enumeration/src/direct_write.rs | 61 +++++++++++++++++++++++++---
 1 file changed, 55 insertions(+), 6 deletions(-)

diff --git a/font-enumeration/src/direct_write.rs b/font-enumeration/src/direct_write.rs
index ef89555..caf56ca 100644
--- a/font-enumeration/src/direct_write.rs
+++ b/font-enumeration/src/direct_write.rs
@@ -1,9 +1,60 @@
 use std::path::PathBuf;
 
-use dwrote::FontCollection;
+use dwrote::{
+    FontCollection, FontStretch as DWriteStretch, FontStyle as DWriteStyle,
+    FontWeight as DWriteWeight,
+};
 
 use crate::{Error, OwnedFont, Stretch, Style, Weight};
 
+impl Style {
+    fn from_direct_write(style: DWriteStyle) -> Self {
+        match style {
+            DWriteStyle::Normal => Style::Normal,
+            DWriteStyle::Italic => Style::Italic,
+            DWriteStyle::Oblique => Style::Oblique(None),
+        }
+    }
+}
+
+impl Weight {
+    fn from_direct_write(weight: DWriteWeight) -> Self {
+        match weight {
+            DWriteWeight::Thin => Weight::THIN,
+            DWriteWeight::ExtraLight => Weight::EXTRA_LIGHT,
+            DWriteWeight::Light => Weight::LIGHT,
+            DWriteWeight::SemiLight => Weight::SEMI_LIGHT,
+            DWriteWeight::Regular => Weight::NORMAL,
+            DWriteWeight::Medium => Weight::MEDIUM,
+            DWriteWeight::SemiBold => Weight::SEMI_BOLD,
+            DWriteWeight::Bold => Weight::BOLD,
+            DWriteWeight::ExtraBold => Weight::EXTRA_BOLD,
+            DWriteWeight::Black => Weight::BLACK,
+            DWriteWeight::ExtraBlack => Weight::EXTRA_BLACK,
+            DWriteWeight::Unknown(val) => Weight::new(val as f32),
+        }
+    }
+}
+
+impl Stretch {
+    fn from_direct_write(stretch: DWriteStretch) -> Self {
+        match stretch {
+            DWriteStretch::UltraCondensed => Stretch::ULTRA_CONDENSED,
+            DWriteStretch::ExtraCondensed => Stretch::EXTRA_CONDENSED,
+            DWriteStretch::Condensed => Stretch::CONDENSED,
+            DWriteStretch::SemiCondensed => Stretch::SEMI_CONDENSED,
+            DWriteStretch::Normal => Stretch::NORMAL,
+            DWriteStretch::SemiExpanded => Stretch::SEMI_EXPANDED,
+            DWriteStretch::Expanded => Stretch::EXPANDED,
+            DWriteStretch::ExtraExpanded => Stretch::EXTRA_EXPANDED,
+            DWriteStretch::UltraExpanded => Stretch::ULTRA_EXPANDED,
+
+            // hmmm...
+            DWriteStretch::Undefined => Stretch::NORMAL,
+        }
+    }
+}
+
 pub fn all_fonts() -> Result<Box<[OwnedFont]>, Error> {
     let collection = FontCollection::system();
 
@@ -20,11 +71,9 @@ pub fn all_fonts() -> Result<Box<[OwnedFont]>, Error> {
                 family_name: font.family_name(),
                 font_name: font.face_name(),
                 path,
-
-                // TODO: calculate
-                style: Style::Normal,
-                weight: Weight::NORMAL,
-                stretch: Stretch::NORMAL,
+                style: Style::from_direct_write(font.style()),
+                weight: Weight::from_direct_write(font.weight()),
+                stretch: Stretch::from_direct_write(font.stretch()),
             })
         }
     }