From 14ee093a5b57953073432ead358cbbc80b1b1837 Mon Sep 17 00:00:00 2001
From: Bastien Orivel <eijebong@bananium.fr>
Date: Thu, 8 Aug 2019 17:10:59 +0200
Subject: [PATCH] Implement size_from_pattern

I tried to mimic the azure implementation but raqote doesn't have a
concept of horizontal or vertical repeat so this might be
wrong/incomplete but this is the last function needed to finally have
some tests pass
---
 components/canvas/raqote_backend.rs | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/components/canvas/raqote_backend.rs b/components/canvas/raqote_backend.rs
index 573ee2bb8ff..1c31346661a 100644
--- a/components/canvas/raqote_backend.rs
+++ b/components/canvas/raqote_backend.rs
@@ -24,8 +24,18 @@ impl Backend for RaqoteBackend {
         color.as_raqote().a != 0
     }
 
-    fn size_from_pattern(&self, _rect: &Rect<f32>, _pattern: &Pattern) -> Option<Size2D<f32>> {
-        unimplemented!()
+    fn size_from_pattern(&self, rect: &Rect<f32>, pattern: &Pattern) -> Option<Size2D<f32>> {
+        match pattern {
+            Pattern::Raqote(raqote::Source::Image(image, extend, ..)) => {
+                match extend {
+                    raqote::ExtendMode::Repeat => {
+                        Some(rect.size)
+                    },
+                    _ => Some(Size2D::new(image.width as f32, image.height as f32))
+                }
+            },
+            _ => None
+        }
     }
 
     fn set_shadow_color<'a>(&mut self, _color: RGBA, _state: &mut CanvasPaintState<'a>) {