richedit: Added support for EM_SETTARGETDEVICE with a NULL DC.

dlls/riched20/editor.c

@@ -114,7 +114,7 @@
   + EM_SETSEL
   + EM_SETSCROLLPOS 3.0
   - EM_SETTABSTOPS 3.0
-  - EM_SETTARGETDEVICE
+  - EM_SETTARGETDEVICE (partial)
   + EM_SETTEXTEX 3.0 (no rich text insertion handling, proper style?)
   - EM_SETTEXTMODE 2.0
   - EM_SETTYPOGRAPHYOPTIONS 3.0
@@ -1590,6 +1590,7 @@ ME_TextEditor *ME_MakeEditor(HWND hWnd) {
   ed->nLastSelStart = ed->nLastSelEnd = 0;
   ed->pLastSelStartPara = ed->pLastSelEndPara = ME_FindItemFwd(ed->pBuffer->pFirst, diParagraph);
   ed->bRedraw = TRUE;
+  ed->bWordWrap = FALSE;
   ed->bHideSelection = FALSE;
   ed->nInvalidOfs = -1;
   ed->pfnWordBreak = NULL;
@@ -1901,7 +1902,6 @@ static LRESULT RichEditWndProc_common(HWND hWnd, UINT msg, WPARAM wParam,
   UNSUPPORTED_MSG(EM_SETLANGOPTIONS)
   UNSUPPORTED_MSG(EM_SETPALETTE)
   UNSUPPORTED_MSG(EM_SETTABSTOPS)
-  UNSUPPORTED_MSG(EM_SETTARGETDEVICE)
   UNSUPPORTED_MSG(EM_SETTYPOGRAPHYOPTIONS)
   UNSUPPORTED_MSG(EM_SETWORDBREAKPROCEX)
   UNSUPPORTED_MSG(WM_STYLECHANGING)
@@ -3188,6 +3188,18 @@ static LRESULT RichEditWndProc_common(HWND hWnd, UINT msg, WPARAM wParam,
     ME_RewrapRepaint(editor);
     return 0;
   }
+  case EM_SETTARGETDEVICE:
+    if (wParam == 0)
+    {
+        switch (lParam)
+        {
+        case 0: editor->bWordWrap = TRUE; break;
+        case 1: editor->bWordWrap = FALSE; break;
+        default: FIXME("Unknown option to EM_SETTARGETDEVICE(NULL,%ld)\n", lParam);
+        }
+    }
+    else FIXME("Unsupported yet non NULL device in EM_SETTARGETDEVICE\n");
+    break;
   default:
   do_default:
     return DefWindowProcW(hWnd, msg, wParam, lParam);

dlls/riched20/editstr.h

@@ -312,6 +312,7 @@ typedef struct tagME_TextEditor
   int nZoomNumerator, nZoomDenominator;
   RECT rcFormat;
   BOOL bRedraw;
+  BOOL bWordWrap;
   int nInvalidOfs;
   int nTextLimit;
   EDITWORDBREAKPROCW pfnWordBreak;
@@ -350,7 +351,7 @@ typedef struct tagME_WrapContext
   ME_Style *style;
   ME_Context *context;
   int nLeftMargin, nRightMargin, nFirstMargin;
-  int nTotalWidth, nAvailWidth;
+  int nAvailWidth;
   int nRow;
   POINT pt;
   BOOL bOverflown;

dlls/riched20/wrap.c

@@ -47,7 +47,11 @@ static void ME_BeginRow(ME_WrapContext *wc)
   wc->pRowStart = NULL;
   wc->bOverflown = FALSE;
   wc->pLastSplittableRun = NULL;
-  wc->nAvailWidth = wc->nTotalWidth - (wc->nRow ? wc->nLeftMargin : wc->nFirstMargin) - wc->nRightMargin;
+  if (wc->context->editor->bWordWrap)
+    wc->nAvailWidth = wc->context->rcView.right - wc->context->rcView.left -
+        (wc->nRow ? wc->nLeftMargin : wc->nFirstMargin) - wc->nRightMargin;
+  else
+    wc->nAvailWidth = ~0u >> 1;
   wc->pt.x = 0;
 }
 
@@ -393,8 +397,10 @@ static void ME_WrapTextParagraph(ME_Context *c, ME_DisplayItem *tp, DWORD begino
       wc.pt.y += border;
   }
 
-  wc.nTotalWidth = c->rcView.right - c->rcView.left;
-  wc.nAvailWidth = wc.nTotalWidth - wc.nFirstMargin - wc.nRightMargin;
+  if (c->editor->bWordWrap)
+    wc.nAvailWidth = c->rcView.right - c->rcView.left - wc.nFirstMargin - wc.nRightMargin;
+  else
+    wc.nAvailWidth = ~0u >> 1;
   wc.pRowStart = NULL;
 
   linespace = ME_GetParaLineSpace(c, &tp->member.para);