Added support for EM_REQUESTRESIZE message, EN_REQUESTRESIZE

dlls/riched20/caret.c

@@ -1097,6 +1097,7 @@ BOOL ME_ArrowKey(ME_TextEditor *editor, int nVKey, int nCtrl)
         editor->bCaretAtEnd = FALSE; /* FIXME or maybe not */
         ME_DeleteSelection(editor);
         ME_UpdateRepaint(editor);
+        ME_SendRequestResize(editor, FALSE);
         return TRUE;
       }
       if (ME_ArrowLeft(editor, p)) {
@@ -1105,6 +1106,7 @@ BOOL ME_ArrowKey(ME_TextEditor *editor, int nVKey, int nCtrl)
         ME_MoveCaret(editor);
         ME_DeleteTextAtCursor(editor, nCursor, 1);
         ME_UpdateRepaint(editor);
+        ME_SendRequestResize(editor, FALSE);
       }
       return TRUE;
     }
@@ -1117,11 +1119,13 @@ BOOL ME_ArrowKey(ME_TextEditor *editor, int nVKey, int nCtrl)
         ME_DeleteSelection(editor);
         ME_ClearTempStyle(editor);
         ME_UpdateRepaint(editor);
+        ME_SendRequestResize(editor, FALSE);
         return TRUE;
       }
       ME_DeleteTextAtCursor(editor, nCursor, 1);
       ME_ClearTempStyle(editor);
       ME_UpdateRepaint(editor);
+      ME_SendRequestResize(editor, FALSE);
       return TRUE;
     }
     case VK_HOME: {

dlls/riched20/editor.c

@@ -83,7 +83,7 @@
   - EM_PASTESPECIAL
   + EM_POSFROMCHAR
   + EM_REDO 2.0
-  - EM_REQUESTRESIZE
+  + EM_REQUESTRESIZE
   + EM_REPLACESEL (proper style?) ANSI&Unicode
   - EM_SCROLL
   - EM_SCROLLCARET
@@ -153,7 +153,7 @@
   - EN_MSGFILTER
   - EN_OLEOPFAILED
   - EN_PROTECTED
-  - EN_REQUESTRESIZE
+  + EN_REQUESTRESIZE
   - EN_SAVECLIPBOARD
   + EN_SELCHANGE 
   + EN_SETFOCUS
@@ -633,6 +633,7 @@ static LRESULT ME_StreamIn(ME_TextEditor *editor, DWORD format, EDITSTREAM *stre
   }
   ME_MoveCaret(editor);
   ME_SendSelChange(editor);
+  ME_SendRequestResize(editor, FALSE);
 
   return 0;
 }
@@ -1134,7 +1135,6 @@ LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lP
   UNSUPPORTED_MSG(EM_HIDESELECTION)
   UNSUPPORTED_MSG(EM_LIMITTEXT) /* also known as EM_SETLIMITTEXT */
   UNSUPPORTED_MSG(EM_PASTESPECIAL)
-  UNSUPPORTED_MSG(EM_REQUESTRESIZE)
   UNSUPPORTED_MSG(EM_SCROLL)
   UNSUPPORTED_MSG(EM_SCROLLCARET)
   UNSUPPORTED_MSG(EM_SELECTIONTYPE)
@@ -1974,6 +1974,9 @@ LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lP
       ME_RewrapRepaint(editor);
     return 0;
   }
+  case EM_REQUESTRESIZE:
+    ME_SendRequestResize(editor, TRUE);
+    return 0;
   case WM_SETREDRAW:
     editor->bRedraw = wParam;
     return 0;

dlls/riched20/editor.h

@@ -173,6 +173,7 @@ ME_DisplayItem *ME_MakeRow(int height, int baseline, int width);
 void ME_InsertRowStart(ME_WrapContext *wc, ME_DisplayItem *pEnd);
 void ME_WrapTextParagraph(ME_Context *c, ME_DisplayItem *tp);
 BOOL ME_WrapMarkedParagraphs(ME_TextEditor *editor);
+void ME_SendRequestResize(ME_TextEditor *editor, BOOL force);
 
 /* para.c */
 ME_DisplayItem *ME_GetParagraph(ME_DisplayItem *run); 

dlls/riched20/paint.c

@@ -90,6 +90,8 @@ void ME_PaintContent(ME_TextEditor *editor, HDC hDC, BOOL bOnlyNew, RECT *rcUpda
     if (ys == c.pt.y) /* don't overwrite the top bar */
       ys++;
   }
+  if (editor->nTotalLength != editor->nLastTotalLength)
+    ME_SendRequestResize(editor, FALSE);
   editor->nLastTotalLength = editor->nTotalLength;
   ME_DestroyContext(&c);
 }

dlls/riched20/wrap.c

@@ -448,9 +448,36 @@ BOOL ME_WrapMarkedParagraphs(ME_TextEditor *editor) {
   }
   editor->sizeWindow.cx = c.rcView.right-c.rcView.left;
   editor->sizeWindow.cy = c.rcView.bottom-c.rcView.top;
+  
   editor->nTotalLength = c.pt.y;
 
   ME_DestroyContext(&c);
   ReleaseDC(hWnd, hDC);
   return bModified;
 }
+
+
+void
+ME_SendRequestResize(ME_TextEditor *editor, BOOL force)
+{
+  if (editor->nEventMask & ENM_REQUESTRESIZE)
+  {
+    RECT rc;
+
+    GetClientRect(editor->hWnd, &rc);
+
+    if (force || rc.bottom != editor->nTotalLength)
+    {
+      REQRESIZE info;
+
+      info.nmhdr.hwndFrom = editor->hWnd;
+      info.nmhdr.idFrom = GetWindowLongW(editor->hWnd, GWLP_ID);
+      info.nmhdr.code = EN_REQUESTRESIZE;
+      info.rc = rc;
+      info.rc.bottom = editor->nTotalLength;
+    
+      SendMessageW(GetParent(editor->hWnd), WM_NOTIFY,
+                   info.nmhdr.idFrom, (LPARAM)&info);
+    }
+  }
+}