line spacng support in text overlay

Author: itaibenari

cloudinary-core/src/main/java/com/cloudinary/transformation/TextLayerBuilder.java

@@ -15,6 +15,7 @@ public class TextLayerBuilder extends AbstractLayerBuilder<TextLayerBuilder> {
 	protected String textAlign = null;
 	protected String stroke = null;
 	protected String letterSpacing = null;
+	protected Integer lineSpacing = null;
 	protected String text = null;
 
 	@Override
@@ -73,6 +74,11 @@ public TextLayerBuilder letterSpacing(String letterSpacing) {
 		this.letterSpacing = letterSpacing;
 		return self();
 	}
+	
+	public TextLayerBuilder lineSpacing(Integer lineSpacing) {
+		this.lineSpacing = lineSpacing;
+		return self();
+	}
 
 	public TextLayerBuilder text(String text) {
 		this.text = SmartUrlEncoder.encode(text).replace("%2C", "%E2%80%9A").replace("/", "%E2%81%84");
@@ -119,6 +125,8 @@ protected String textStyleIdentifier() {
 			components.add(this.stroke);
 		if (StringUtils.isNotBlank(this.letterSpacing))
 			components.add("letter_spacing_" + this.letterSpacing);
+		if (this.lineSpacing != null)
+			components.add("line_spacing_" + this.lineSpacing.toString());
 
 		if (this.fontFamily == null && this.fontSize == null && components.isEmpty()) {
 			return null;

cloudinary-core/src/test/java/com/cloudinary/test/CloudinaryTest.java

@@ -919,8 +919,8 @@ public void testOverlayOptions() {
 				new TextLayerBuilder().text("Hello World, Nice to meet you?").fontFamily("Arial").fontSize(18),
 				"text:Arial_18:Hello%20World%E2%80%9A%20Nice%20to%20meet%20you%3F",
 				new TextLayerBuilder().text("Hello World, Nice to meet you?").fontFamily("Arial").fontSize(18)
-						.fontWeight("bold").fontStyle("italic").letterSpacing("4"),
-				"text:Arial_18_bold_italic_letter_spacing_4:Hello%20World%E2%80%9A%20Nice%20to%20meet%20you%3F",
+						.fontWeight("bold").fontStyle("italic").letterSpacing("4").lineSpacing(3),
+				"text:Arial_18_bold_italic_letter_spacing_4_line_spacing_3:Hello%20World%E2%80%9A%20Nice%20to%20meet%20you%3F",
 				new SubtitlesLayerBuilder().publicId("sample_sub_en.srt"), "subtitles:sample_sub_en.srt",
 				new SubtitlesLayerBuilder().publicId("sample_sub_he.srt").fontFamily("Arial").fontSize(40),
 				"subtitles:Arial_40:sample_sub_he.srt" };