svg: convert data matrix to svgHEADv0.2.0master

1 files changed, 24 insertions, 0 deletions

diff --git a/src/lib.rs b/src/lib.rs
index ddb4405..e53ea75 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -108,6 +108,30 @@ impl DataMatrix {
         let idx = row * self.width + col;
         self.grid()[idx]
     }
+
+    #[cfg(feature = "svg")]
+    pub fn svg(&self) -> svg::Document {
+        use svg::node::element::Rectangle;
+
+        let mut svg = svg::Document::new()
+            // -1, -1 for quiet zone
+            // +2 for size of quiet zone
+            .set("viewBox", format!("-1 -1 {} {}", self.width() + 2, self.height() + 2));
+        for row in 0..self.height() {
+            for col in 0..self.width() {
+                if self.get(row, col) {
+                    svg = svg.add(
+                        Rectangle::new()
+                            .set("width", "1")
+                            .set("height", "1")
+                            .set("x", col)
+                            .set("y", self.height() - row - 1),
+                    );
+                }
+            }
+        }
+        svg
+    }
 }
 
 impl Drop for DataMatrix {