From 2809dac6a783318c1b07e237a0fba284c445fee2 Mon Sep 17 00:00:00 2001
From: Laurenz Stampfl <47084093+LaurenzV@users.noreply.github.com>
Date: Mon, 4 Aug 2025 11:59:10 +0200
Subject: [PATCH] Apply aspect ratio correction for linear gradients in PDF
 export (#6689)

---
 crates/typst-pdf/src/paint.rs                     |   3 ++-
 ...680-gradient-linear-with-aspect-correction.png | Bin 0 -> 137 bytes
 tests/suite/visualize/gradient.typ                |   3 +++
 3 files changed, 5 insertions(+), 1 deletion(-)
 create mode 100644 tests/ref/issue-6680-gradient-linear-with-aspect-correction.png

diff --git a/crates/typst-pdf/src/paint.rs b/crates/typst-pdf/src/paint.rs
index e03d0e94..c994e0e2 100644
--- a/crates/typst-pdf/src/paint.rs
+++ b/crates/typst-pdf/src/paint.rs
@@ -152,11 +152,12 @@ fn convert_gradient(
         RelativeTo::Parent => state.container_size(),
     };
 
-    let angle = gradient.angle().unwrap_or_else(Angle::zero);
+    let mut angle = gradient.angle().unwrap_or_else(Angle::zero);
     let base_transform = correct_transform(state, gradient.unwrap_relative(on_text));
     let stops = convert_gradient_stops(gradient);
     match &gradient {
         Gradient::Linear(_) => {
+            angle = Gradient::correct_aspect_ratio(angle, size.aspect_ratio());
             let (x1, y1, x2, y2) = {
                 let (mut sin, mut cos) = (angle.sin(), angle.cos());
 
diff --git a/tests/ref/issue-6680-gradient-linear-with-aspect-correction.png b/tests/ref/issue-6680-gradient-linear-with-aspect-correction.png
new file mode 100644
index 0000000000000000000000000000000000000000..38769ed9d549717aee5c75b76bfbc086a10e8c13
GIT binary patch
literal 137
zcmeAS@N?(olHy`uVBq!ia0vp^CxBRlkr_yS%6iZVq}T#{LR=Y2ZvJ;P%hJ5|7${=r
z>Eaktacl1Rg@OzQ90wfS(oNhFSyY-9Z&gU@s1>c;Jn7;j7fuoTj)fXs6HL4os&p-u
k=#q2skWvjy;(k~2H;*ae_RODBK$93eUHx3vIVCg!0B1-mhyVZp

literal 0
HcmV?d00001

diff --git a/tests/suite/visualize/gradient.typ b/tests/suite/visualize/gradient.typ
index 8446ca03..0071dd91 100644
--- a/tests/suite/visualize/gradient.typ
+++ b/tests/suite/visualize/gradient.typ
@@ -692,3 +692,6 @@ $ A = mat(
     (blue, 100%),
   )
 )
+
+--- issue-6680-gradient-linear-with-aspect-correction ---
+#set page(width: 200pt, height: auto, margin: 10pt, fill: gradient.linear(red, blue, angle: 45deg).sharp(2))