Bugfix: support decimal magnification values by rounding up (#111)

* When we tried to magnify using decimal value such as 1.2 the barcode image is 'cut' due to width being truncated a bit.
This is fixed by converting width to near integer value using Math.ceil.
Also, add test case to verify the same svg

* To round off height in case of decimal values being used to magnify using Math.ceil

Author: uksolanki

src/main/java/uk/org/okapibarcode/output/SvgRenderer.java

@@ -91,8 +91,8 @@ public SvgRenderer(OutputStream out, double magnification, Color paper, Color in
     public void render(Symbol symbol) throws IOException {
 
         String content = symbol.getContent();
-        int width = (int) (symbol.getWidth() * magnification);
-        int height = (int) (symbol.getHeight() * magnification);
+        int width = (int) Math.ceil(symbol.getWidth() * magnification);
+        int height = (int) Math.ceil(symbol.getHeight() * magnification);
         int marginX = (int) (symbol.getQuietZoneHorizontal() * magnification);
         int marginY = (int) (symbol.getQuietZoneVertical() * magnification);
 

src/test/java/uk/org/okapibarcode/output/SvgRendererTest.java

@@ -24,6 +24,7 @@
 import java.io.InputStream;
 import java.io.StringReader;
 import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
 import java.util.Locale;
 
 import org.junit.jupiter.api.AfterEach;
@@ -214,6 +215,13 @@ public void testEan13WithAddOn() throws IOException {
         test(ean, 2, Color.WHITE, Color.BLACK, "ean-13-with-add-on.svg", true);
     }
 
+    @Test
+    public void testCode93With1dot2Magnification() throws IOException {
+        Code93 code93 = new Code93();
+        code93.setContent("123456789");
+        test(code93, 1.2, Color.WHITE, Color.BLACK, "code93-with-magnification-1.2.svg", true);
+    }
+
     private void test(Symbol symbol, double magnification, Color paper, Color ink, String expectationFile, boolean xmlProlog) throws IOException {
 
         ByteArrayOutputStream baos = new ByteArrayOutputStream();