Dylan Smith : richedit: Handle case for EM_LINELENGTH when offset is between \r\n.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: c94e78a5728ecc8ddde5b1d9f8395b2a11c99256
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=c94e78a5728ecc8ddde5b1d9f8395b2a11c99256

Author: Dylan Smith <dylan.ah.smith at gmail.com>
Date:   Tue Jan 27 03:39:03 2009 -0500

richedit: Handle case for EM_LINELENGTH when offset is between \r\n.

I found that ME_FindItemAtOffset and ME_CursorFromCharOfs are used
almost identically, except for how they handle a character offset that
is between a carriage return and line feed.  In this case
ME_CursorFromCharOfs sets the cursor's run offset to 0, but
ME_FindItemAtOffset instead returns the next run which is what was
causing ME_LINELENGTH to incorrectly return the length of the next
line.

---

 dlls/riched20/editor.c       |    7 ++++---
 dlls/riched32/tests/editor.c |    8 ++------
 2 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/dlls/riched20/editor.c b/dlls/riched20/editor.c
index f10dddc..86f89d0 100644
--- a/dlls/riched20/editor.c
+++ b/dlls/riched20/editor.c
@@ -3786,7 +3786,8 @@ LRESULT ME_HandleMessage(ME_TextEditor *editor, UINT msg, WPARAM wParam,
   {
     ME_DisplayItem *item, *item_end;
     int nChars = 0, nThisLineOfs = 0, nNextLineOfs = 0;
-    
+    ME_Cursor cursor;
+
     if (wParam > ME_GetTextLength(editor))
       return 0;
     if (wParam == -1)
@@ -3794,8 +3795,8 @@ LRESULT ME_HandleMessage(ME_TextEditor *editor, UINT msg, WPARAM wParam,
       FIXME("EM_LINELENGTH: returning number of unselected characters on lines with selection unsupported.\n");
       return 0;
     }
-    item = ME_FindItemAtOffset(editor, diRun, wParam, NULL);
-    item = ME_RowStart(item);
+    ME_CursorFromCharOfs(editor, wParam, &cursor);
+    item = ME_RowStart(cursor.pRun);
     nThisLineOfs = ME_CharOfsFromRunOfs(editor, ME_FindItemFwd(item, diRun), 0);
     item_end = ME_FindItemFwd(item, diStartRowOrParagraphOrEnd);
     if (item_end->type == diStartRow)
diff --git a/dlls/riched32/tests/editor.c b/dlls/riched32/tests/editor.c
index 113dbd0..7332536 100644
--- a/dlls/riched32/tests/editor.c
+++ b/dlls/riched32/tests/editor.c
@@ -454,12 +454,8 @@ static void test_EM_LINELENGTH(void)
 
   for (i = 0; i < sizeof(offset_test)/sizeof(offset_test[0]); i++) {
     result = SendMessage(hwndRichEdit, EM_LINELENGTH, offset_test[i][0], 0);
-    if (i == 6)
-      todo_wine ok(result == offset_test[i][1], "Length of line at offset %d is %ld, expected %d\n",
-         offset_test[i][0], result, offset_test[i][1]);
-    else
-      ok(result == offset_test[i][1], "Length of line at offset %d is %ld, expected %d\n",
-         offset_test[i][0], result, offset_test[i][1]);
+    ok(result == offset_test[i][1], "Length of line at offset %d is %ld, expected %d\n",
+       offset_test[i][0], result, offset_test[i][1]);
   }
 
   DestroyWindow(hwndRichEdit);