From ed0dbafc72b99ab2d2e97c7ed748d32026e9d880 Mon Sep 17 00:00:00 2001
From: Bastien Orivel <eijebong@bananium.fr>
Date: Thu, 8 Aug 2019 16:40:38 +0200
Subject: [PATCH] Implement need_to_draw_shadow

---
 components/canvas/canvas_data.rs    |  2 +-
 components/canvas/raqote_backend.rs | 14 +++++++++++---
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/components/canvas/canvas_data.rs b/components/canvas/canvas_data.rs
index 8288e823eea..1602c8c7467 100644
--- a/components/canvas/canvas_data.rs
+++ b/components/canvas/canvas_data.rs
@@ -317,7 +317,7 @@ pub enum Color {
     #[cfg(feature = "canvas2d-azure")]
     Azure(azure::azure_hl::Color),
     #[cfg(feature = "canvas2d-raqote")]
-    Raqote(()),
+    Raqote(raqote::SolidSource),
 }
 
 #[derive(Clone)]
diff --git a/components/canvas/raqote_backend.rs b/components/canvas/raqote_backend.rs
index b212a2622ea..573ee2bb8ff 100644
--- a/components/canvas/raqote_backend.rs
+++ b/components/canvas/raqote_backend.rs
@@ -20,8 +20,8 @@ impl Backend for RaqoteBackend {
         unimplemented!()
     }
 
-    fn need_to_draw_shadow(&self, _color: &Color) -> bool {
-        unimplemented!()
+    fn need_to_draw_shadow(&self, color: &Color) -> bool {
+        color.as_raqote().a != 0
     }
 
     fn size_from_pattern(&self, _rect: &Rect<f32>, _pattern: &Pattern) -> Option<Size2D<f32>> {
@@ -84,7 +84,7 @@ impl<'a> CanvasPaintState<'a> {
             shadow_offset_x: 0.0,
             shadow_offset_y: 0.0,
             shadow_blur: 0.0,
-            shadow_color: Color::Raqote(()),
+            shadow_color: Color::Raqote(raqote::SolidSource { r: 0, g: 0, b: 0, a: 0 }),
         }
     }
 }
@@ -450,3 +450,11 @@ impl<'a> ToRaqoteSource<'a> for FillOrStrokeStyle {
         }
     }
 }
+
+impl Color {
+    fn as_raqote(&self) -> &raqote::SolidSource {
+        match self {
+            Color::Raqote(s) => s,
+        }
+    }
+}