From 67363429eb04c636941147f6c487c9a95afda742 Mon Sep 17 00:00:00 2001
From: Deepika Udayagiri <deepika.udayagiri@in.ibm.com>
Date: Wed, 3 Jul 2024 18:27:45 +0530
Subject: [PATCH] Corrected TextLayout to produce right number of lines when
 '\r\n' sequence comes.

Fixes #184
---
 .../org/eclipse/swt/graphics/TextLayout.java  | 38 +++++++++++++++++--
 1 file changed, 35 insertions(+), 3 deletions(-)

diff --git a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/TextLayout.java b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/TextLayout.java
index 095ceffb07c..4e633a9c993 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/TextLayout.java	
+++ b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/TextLayout.java	
@@ -42,8 +42,8 @@
  */
 public final class TextLayout extends Resource {
 	Font font;
-	String text, segmentsText;
-	int lineSpacingInPoints;
+	String text, segmentsText, originalText;
+	int lineSpacingInPoints, previousCountNextLine = 0, previousEnd = -1;
 	int ascent, descent;
 	int alignment;
 	int wrapWidth;
@@ -2952,8 +2952,11 @@ StyleItem[] merge (long items, int itemCount) {
 			linkBefore = false;
 		}
 		char ch = segmentsText.charAt(start);
+		if(ch == '\r') {
+			ch = segmentsText.charAt(start+1);
+		}
 		switch (ch) {
-			case '\r':
+			//case '\r':
 			case '\n':
 				item.lineBreak = true;
 				break;
@@ -3448,6 +3451,28 @@ public void setVerticalIndent (int verticalIndent) {
  */
 public void setStyle (TextStyle style, int start, int end) {
 	checkLayout();
+	int countNextLine = 0, noStyleCountNextLine = 0, loop = 0;
+	if (previousEnd < 0)
+		loop = previousEnd+1;
+	else
+		loop = previousEnd;
+	for(int i = loop; i < end; i++) {
+		if(originalText.charAt(i) == '\r' && originalText.charAt(i+1) =='\n')
+		{
+			countNextLine++;
+			if(i < start)
+				noStyleCountNextLine++;
+		}
+	}
+	previousCountNextLine = previousCountNextLine + countNextLine;
+	if(start == 0 || previousEnd < 0)	{
+		start = start - noStyleCountNextLine;
+	}
+	else {
+		start = start - previousCountNextLine;
+	}
+	previousEnd = end;
+	end = end - previousCountNextLine;
 	int length = text.length();
 	if (length == 0) return;
 	if (start > end) return;
@@ -3564,6 +3589,13 @@ public void setTabs (int[] tabs) {
  */
 public void setText (String text) {
 	checkLayout();
+
+	this.originalText = text;
+	String[] strings = text.split("\r");
+	text = "";
+	for(int i = 0; i < strings.length; i++)
+		text += strings[i];
+
 	if (text == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
 	if (text.equals(this.text)) return;
 	freeRuns();