From 5067e0fc2a6de0893c3408bde0665e708376965b Mon Sep 17 00:00:00 2001
From: Phil Krylov <phil@newstar.rinet.ru>
Date: Wed, 6 Jul 2005 11:12:10 +0000
Subject: [PATCH] Fixed EM_LINEINDEX handler and added EM_LINEFROMCHAR handler.

---
 dlls/riched20/editor.c | 35 ++++++++++-------------------------
 dlls/riched20/editor.h |  1 +
 dlls/riched20/row.c    | 27 +++++++++++++++++++++++++++
 3 files changed, 38 insertions(+), 25 deletions(-)

diff --git a/dlls/riched20/editor.c b/dlls/riched20/editor.c
index 3fb2a9aa8b3..7f29b1b810a 100644
--- a/dlls/riched20/editor.c
+++ b/dlls/riched20/editor.c
@@ -76,7 +76,7 @@
   - EM_SETZOOM 3.0
   - EM_HIDESELECTION
   - EM_LIMITTEXT
-  - EM_LINEFROMCHAR
+  + EM_LINEFROMCHAR
   + EM_LINEINDEX
   - EM_LINELENGTH
   + EM_LINESCROLL
@@ -914,7 +914,6 @@ LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lP
   UNSUPPORTED_MSG(EM_GETZOOM)
   UNSUPPORTED_MSG(EM_HIDESELECTION)
   UNSUPPORTED_MSG(EM_LIMITTEXT) /* also known as EM_SETLIMITTEXT */
-  UNSUPPORTED_MSG(EM_LINEFROMCHAR)
   UNSUPPORTED_MSG(EM_LINELENGTH)
   UNSUPPORTED_MSG(EM_PASTESPECIAL)
 /*  UNSUPPORTED_MSG(EM_POSFROMCHARS) missing in Wine headers */
@@ -1308,37 +1307,23 @@ LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lP
     }
     return max(1, nRows);
   }
+  case EM_LINEFROMCHAR:
+  {
+    if (wParam == -1)
+      return ME_RowNumberFromCharOfs(editor, ME_GetCursorOfs(editor, 1));
+    else
+      return ME_RowNumberFromCharOfs(editor, wParam);
+  }
   case EM_EXLINEFROMCHAR:
   {
-    ME_DisplayItem *item = editor->pBuffer->pFirst->next;
-    int nOffset;
-    int nRow = 0;
-
-    while (item && item->member.para.next_para->member.para.nCharOfs <= lParam)
-    {
-      nRow += item->member.para.nRows;
-      item = ME_FindItemFwd(item, diParagraph);
-    }
-    if (item)
-    {
-      nOffset = lParam - item->member.para.nCharOfs;
-      item = ME_FindItemFwd(item, diRun);
-      while ((item = ME_FindItemFwd(item, diStartRowOrParagraph)))
-      {
-	item = ME_FindItemFwd(item, diRun);
-	if (item->member.run.nCharOfs > nOffset)
-          break;
-	nRow++;
-      }
-    }
-    return nRow;
+    return ME_RowNumberFromCharOfs(editor, lParam);
   }
   case EM_LINEINDEX:
   {
     ME_DisplayItem *item, *para;
     
     if (wParam == -1)
-      item = ME_FindItemBack(editor->pCursors[1].pRun, diStartRow);
+      item = ME_FindItemBack(editor->pCursors[0].pRun, diStartRow);
     else
       item = ME_FindRowWithNumber(editor, wParam);
     if (!item)
diff --git a/dlls/riched20/editor.h b/dlls/riched20/editor.h
index 8ea138c58de..c4c352c7910 100644
--- a/dlls/riched20/editor.h
+++ b/dlls/riched20/editor.h
@@ -101,6 +101,7 @@ ME_DisplayItem *ME_RowStart(ME_DisplayItem *item);
 ME_DisplayItem *ME_RowEnd(ME_DisplayItem *item);
 void ME_RenumberParagraphs(ME_DisplayItem *item); /* TODO */
 ME_DisplayItem *ME_FindRowWithNumber(ME_TextEditor *editor, int nRow);
+int ME_RowNumberFromCharOfs(ME_TextEditor *editor, int nOfs);
 
 /* run.c */
 ME_DisplayItem *ME_MakeRun(ME_Style *s, ME_String *strData, int nFlags);
diff --git a/dlls/riched20/row.c b/dlls/riched20/row.c
index 061199a0c20..b803ed21302 100644
--- a/dlls/riched20/row.c
+++ b/dlls/riched20/row.c
@@ -101,3 +101,30 @@ ME_FindRowWithNumber(ME_TextEditor *editor, int nRow)
     item = ME_FindItemFwd(item, diStartRow);
   return item;
 }
+
+
+int
+ME_RowNumberFromCharOfs(ME_TextEditor *editor, int nOfs)
+{
+  ME_DisplayItem *item = editor->pBuffer->pFirst->next;
+  int nRow = 0;
+
+  while (item && item->member.para.next_para->member.para.nCharOfs <= nOfs)
+  {
+    nRow += item->member.para.nRows;
+    item = ME_FindItemFwd(item, diParagraph);
+  }
+  if (item)
+  {
+    nOfs -= item->member.para.nCharOfs;
+    item = ME_FindItemFwd(item, diRun);
+    while ((item = ME_FindItemFwd(item, diStartRowOrParagraph)) != NULL)
+    {
+      item = ME_FindItemFwd(item, diRun);
+      if (item->member.run.nCharOfs > nOfs)
+        break;
+      nRow++;
+    }
+  }
+  return nRow;
+}