riched20: Use row ptrs in the cursor from virtual co-ords function.

dlls/riched20/caret.c

@@ -952,7 +952,7 @@ static BOOL cursor_from_virtual_coords( ME_TextEditor *editor, int x, int y,
                                         ME_Cursor *result, BOOL final_eop )
 {
   ME_Paragraph *para = editor_first_para( editor );
-  ME_DisplayItem *row = NULL;
+  ME_Row *row = NULL, *next_row;
   BOOL isExact = TRUE;
 
   x -= editor->rcFormat.left;
@@ -966,7 +966,7 @@ static BOOL cursor_from_virtual_coords( ME_TextEditor *editor, int x, int y,
       if (para->nFlags & MEPF_ROWSTART)
         para = pixel_pos_in_table_row( x, y, para );
       y -= para->pt.y;
-      row = ME_FindItemFwd( para_get_di( para ), diStartRow);
+      row = para_first_row( para );
       break;
     }
     else if (para->nFlags & MEPF_ROWSTART)
@@ -977,24 +977,22 @@ static BOOL cursor_from_virtual_coords( ME_TextEditor *editor, int x, int y,
   /* find row */
   while (row)
   {
-    ME_DisplayItem *next_row;
-
-    if (y < row->member.row.pt.y + row->member.row.nHeight) break;
-    next_row = ME_FindItemFwd(row, diStartRow);
+    if (y < row->pt.y + row->nHeight) break;
+    next_row = row_next( row );
     if (!next_row) break;
     row = next_row;
   }
 
-  if (!row && !final_eop)
+  if (!row && !final_eop && para_prev( para ))
   {
     /* The position is below the last paragraph, so the last row will be used
      * rather than the end of the text, so the x position will be used to
      * determine the offset closest to the pixel position. */
     isExact = FALSE;
-    row = ME_FindItemBack( para_get_di( para ), diStartRow);
+    row = para_end_row( para_prev( para ) );
   }
 
-  if (row) return row_cursor( editor, &row->member.row, x, result ) && isExact;
+  if (row) return row_cursor( editor, row, x, result ) && isExact;
 
   ME_SetCursorToEnd(editor, result, TRUE);
   return FALSE;

dlls/riched20/editor.h

@@ -213,7 +213,9 @@ void ME_SetDefaultParaFormat(ME_TextEditor *editor, PARAFORMAT2 *pFmt) DECLSPEC_
 int get_total_width(ME_TextEditor *editor) DECLSPEC_HIDDEN;
 ME_Cell *para_cell( ME_Paragraph *para ) DECLSPEC_HIDDEN;
 void para_destroy( ME_TextEditor *editor, ME_Paragraph *item ) DECLSPEC_HIDDEN;
+ME_Row *para_end_row( ME_Paragraph *para ) DECLSPEC_HIDDEN;
 ME_Run *para_end_run( ME_Paragraph *para ) DECLSPEC_HIDDEN;
+ME_Row *para_first_row( ME_Paragraph *para ) DECLSPEC_HIDDEN;
 ME_Run *para_first_run( ME_Paragraph *para ) DECLSPEC_HIDDEN;
 BOOL para_in_table( ME_Paragraph *para ) DECLSPEC_HIDDEN;
 ME_Paragraph *para_join( ME_TextEditor *editor, ME_Paragraph *para, BOOL use_first_fmt ) DECLSPEC_HIDDEN;

dlls/riched20/para.c

@@ -130,6 +130,25 @@ ME_Cell *para_cell( ME_Paragraph *para )
     return &para->pCell->member.cell;
 }
 
+ME_Row *para_first_row( ME_Paragraph *para )
+{
+    ME_DisplayItem *item;
+
+    item = ME_FindItemFwd( para_get_di( para ), diStartRowOrParagraph );
+    if (!item || item->type != diStartRow) return NULL;
+    return &item->member.row;
+}
+
+ME_Row *para_end_row( ME_Paragraph *para )
+{
+    ME_DisplayItem *item;
+
+    para = para_next( para );
+    item = ME_FindItemBack( para_get_di( para ), diStartRowOrParagraph );
+    if (!item || item->type != diStartRow) return NULL;
+    return &item->member.row;
+}
+
 void ME_MakeFirstParagraph(ME_TextEditor *editor)
 {
   static const WCHAR cr_lf[] = {'\r','\n',0};

dlls/riched20/row.c

@@ -28,8 +28,8 @@ ME_Row *row_next( ME_Row *row )
 {
     ME_DisplayItem *item;
 
-    item = ME_FindItemFwd( row_get_di( row ), diStartRow );
-    if (!item) return NULL;
+    item = ME_FindItemFwd( row_get_di( row ), diStartRowOrParagraphOrEnd );
+    if (!item || item->type != diStartRow) return NULL;
     return &item->member.row;
 }