riched20: Add a visual vs logical order flag to the character to position mapping routines.

dlls/riched20/caret.c

@@ -237,7 +237,7 @@ ME_GetCursorCoordinates(ME_TextEditor *editor, ME_Cursor *pCursor,
       assert(run->type == diRun);
     }
   }
-  run_x = ME_PointFromCharContext( &c, &run->member.run, pCursor->nOffset );
+  run_x = ME_PointFromCharContext( &c, &run->member.run, pCursor->nOffset, TRUE );
 
   *height = pSizeRun->member.run.nAscent + pSizeRun->member.run.nDescent;
   *x = c.rcView.left + run->member.run.pt.x + run_x - editor->horz_si.nPos;
@@ -887,7 +887,7 @@ static BOOL ME_FindRunInRow(ME_TextEditor *editor, ME_DisplayItem *pRow,
 
     if (x >= run_x && x < run_x+width)
     {
-      cursor->nOffset = ME_CharFromPoint(editor, x-run_x, &pNext->member.run, TRUE);
+      cursor->nOffset = ME_CharFromPoint(editor, x-run_x, &pNext->member.run, TRUE, TRUE);
       cursor->pRun = pNext;
       cursor->pPara = ME_GetParagraph( cursor->pRun );
       return exact;
@@ -1182,7 +1182,7 @@ static int ME_GetXForArrow(ME_TextEditor *editor, ME_Cursor *pCursor)
     }
     else {
       x = pRun->member.run.pt.x;
-      x += ME_PointFromChar(editor, &pRun->member.run, pCursor->nOffset);
+      x += ME_PointFromChar(editor, &pRun->member.run, pCursor->nOffset, TRUE);
     }
     editor->nUDArrowX = x;
   }

dlls/riched20/editor.c

@@ -3936,7 +3936,7 @@ LRESULT ME_HandleMessage(ME_TextEditor *editor, UINT msg, WPARAM wParam,
     ME_RunOfsFromCharOfs(editor, nCharOfs, &pPara, &pRun, &nOffset);
     assert(pRun->type == diRun);
     pt.y = pRun->member.run.pt.y;
-    pt.x = pRun->member.run.pt.x + ME_PointFromChar(editor, &pRun->member.run, nOffset);
+    pt.x = pRun->member.run.pt.x + ME_PointFromChar(editor, &pRun->member.run, nOffset, TRUE);
     pt.y += pPara->member.para.pt.y + editor->rcFormat.top;
     pt.x += editor->rcFormat.left;
 

dlls/riched20/editor.h

@@ -140,10 +140,10 @@ ME_DisplayItem *ME_InsertRunAtCursor(ME_TextEditor *editor, ME_Cursor *cursor,
 void ME_CheckCharOffsets(ME_TextEditor *editor) DECLSPEC_HIDDEN;
 void ME_PropagateCharOffset(ME_DisplayItem *p, int shift) DECLSPEC_HIDDEN;
 /* this one accounts for 1/2 char tolerance */
-int ME_CharFromPointContext(ME_Context *c, int cx, ME_Run *run, BOOL closest) DECLSPEC_HIDDEN;
-int ME_CharFromPoint(ME_TextEditor *editor, int cx, ME_Run *run, BOOL closest) DECLSPEC_HIDDEN;
-int ME_PointFromCharContext(ME_Context *c, ME_Run *pRun, int nOffset) DECLSPEC_HIDDEN;
-int ME_PointFromChar(ME_TextEditor *editor, ME_Run *pRun, int nOffset) DECLSPEC_HIDDEN;
+int ME_CharFromPointContext(ME_Context *c, int cx, ME_Run *run, BOOL closest, BOOL visual_order) DECLSPEC_HIDDEN;
+int ME_CharFromPoint(ME_TextEditor *editor, int cx, ME_Run *run, BOOL closest, BOOL visual_order) DECLSPEC_HIDDEN;
+int ME_PointFromCharContext(ME_Context *c, ME_Run *pRun, int nOffset, BOOL visual_order) DECLSPEC_HIDDEN;
+int ME_PointFromChar(ME_TextEditor *editor, ME_Run *pRun, int nOffset, BOOL visual_order) DECLSPEC_HIDDEN;
 int ME_CanJoinRuns(const ME_Run *run1, const ME_Run *run2) DECLSPEC_HIDDEN;
 void ME_JoinRuns(ME_TextEditor *editor, ME_DisplayItem *p) DECLSPEC_HIDDEN;
 ME_DisplayItem *ME_SplitRunSimple(ME_TextEditor *editor, ME_Cursor *cursor) DECLSPEC_HIDDEN;

dlls/riched20/paint.c

@@ -306,9 +306,9 @@ static void get_selection_rect( ME_Context *c, ME_Run *run, int from, int to, in
 {
     from = max( 0, from );
     to = min( run->len, to );
-    r->left = ME_PointFromCharContext( c, run, from );
+    r->left = ME_PointFromCharContext( c, run, from, TRUE );
     r->top = 0;
-    r->right = ME_PointFromCharContext( c, run, to );
+    r->right = ME_PointFromCharContext( c, run, to, TRUE );
     r->bottom = cy;
     return;
 }
@@ -1235,7 +1235,7 @@ void ME_EnsureVisible(ME_TextEditor *editor, ME_Cursor *pCursor)
 
   if (editor->styleFlags & ES_AUTOHSCROLL)
   {
-    x = pRun->pt.x + ME_PointFromChar(editor, pRun, pCursor->nOffset);
+    x = pRun->pt.x + ME_PointFromChar(editor, pRun, pCursor->nOffset, TRUE);
     if (x > editor->horz_si.nPos + editor->sizeWindow.cx)
       x = x + 1 - editor->sizeWindow.cx;
     else if (x > editor->horz_si.nPos)

dlls/riched20/run.c

@@ -415,7 +415,7 @@ void ME_UpdateRunFlags(ME_TextEditor *editor, ME_Run *run)
  * closest = FALSE cx = 0..7 return 0, cx = 8..15 return 1
  * closest = TRUE  cx = 0..3 return 0, cx = 4..11 return 1.
  */
-int ME_CharFromPointContext(ME_Context *c, int cx, ME_Run *run, BOOL closest)
+int ME_CharFromPointContext(ME_Context *c, int cx, ME_Run *run, BOOL closest, BOOL visual_order)
 {
   ME_String *mask_text = NULL;
   WCHAR *str;
@@ -464,13 +464,13 @@ int ME_CharFromPointContext(ME_Context *c, int cx, ME_Run *run, BOOL closest)
   return fit;
 }
 
-int ME_CharFromPoint(ME_TextEditor *editor, int cx, ME_Run *run, BOOL closest)
+int ME_CharFromPoint(ME_TextEditor *editor, int cx, ME_Run *run, BOOL closest, BOOL visual_order)
 {
     ME_Context c;
     int ret;
 
     ME_InitContext( &c, editor, ITextHost_TxGetDC( editor->texthost ) );
-    ret = ME_CharFromPointContext( &c, cx, run, closest );
+    ret = ME_CharFromPointContext( &c, cx, run, closest, visual_order );
     ME_DestroyContext(&c);
     return ret;
 }
@@ -499,7 +499,7 @@ static void ME_GetTextExtent(ME_Context *c, LPCWSTR szText, int nChars, ME_Style
  * Returns a run-relative pixel position given a run-relative character
  * position (character offset)
  */
-int ME_PointFromCharContext(ME_Context *c, ME_Run *pRun, int nOffset)
+int ME_PointFromCharContext(ME_Context *c, ME_Run *pRun, int nOffset, BOOL visual_order)
 {
   SIZE size;
   ME_String *mask_text = NULL;
@@ -532,13 +532,13 @@ int ME_PointFromCharContext(ME_Context *c, ME_Run *pRun, int nOffset)
  *
  * Calls ME_PointFromCharContext after first creating a context.
  */
-int ME_PointFromChar(ME_TextEditor *editor, ME_Run *pRun, int nOffset)
+int ME_PointFromChar(ME_TextEditor *editor, ME_Run *pRun, int nOffset, BOOL visual_order)
 {
     ME_Context c;
     int ret;
 
     ME_InitContext(&c, editor, ITextHost_TxGetDC(editor->texthost));
-    ret = ME_PointFromCharContext( &c, pRun, nOffset );
+    ret = ME_PointFromCharContext( &c, pRun, nOffset, visual_order );
     ME_DestroyContext(&c);
 
     return ret;

dlls/riched20/wrap.c

@@ -107,7 +107,7 @@ static ME_DisplayItem *split_run_extents(ME_WrapContext *wc, ME_DisplayItem *ite
 static int find_split_point( ME_Context *c, int cx, ME_Run *run )
 {
     if (!run->len || cx <= 0) return 0;
-    return ME_CharFromPointContext( c, cx, run, FALSE );
+    return ME_CharFromPointContext( c, cx, run, FALSE, FALSE );
 }
 
 static ME_DisplayItem *ME_MakeRow(int height, int baseline, int width)