Added EM_GETZOOM and EM_SETZOOM RichEdit message handlers.

dlls/riched20/editor.c

@@ -73,7 +73,7 @@
   - EM_GETWORDBREAKPROC
   - EM_GETWORDBREAKPROCEX
   - EM_GETWORDWRAPMODE 1.0asian
-  - EM_SETZOOM 3.0
+  + EM_GETZOOM 3.0
   - EM_HIDESELECTION
   - EM_LIMITTEXT
   + EM_LINEFROMCHAR
@@ -119,7 +119,7 @@
   - EM_SETWORDBREAKPROC
   - EM_SETWORDBREAKPROCEX
   - EM_SETWORDWRAPMODE 1.0asian
-  - EM_SETZOOM 3.0
+  + EM_SETZOOM 3.0
   - EM_SHOWSCROLLBAR 2.0
   - EM_STOPGROUPTYPING 2.0
   + EM_STREAMIN
@@ -747,6 +747,7 @@ ME_TextEditor *ME_MakeEditor(HWND hWnd) {
   ed->nParagraphs = 1;
   ed->nLastSelStart = ed->nLastSelEnd = 0;
   ed->nScrollPosY = 0;
+  ed->nZoomNumerator = ed->nZoomDenominator = 0;
   for (i=0; i<HFONT_CACHE_SIZE; i++)
   {
     ed->pFontCache[i].nRefs = 0;
@@ -1051,7 +1052,6 @@ LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lP
   UNSUPPORTED_MSG(EM_GETUNDONAME)
   UNSUPPORTED_MSG(EM_GETWORDBREAKPROC)
   UNSUPPORTED_MSG(EM_GETWORDBREAKPROCEX)
-  UNSUPPORTED_MSG(EM_GETZOOM)
   UNSUPPORTED_MSG(EM_HIDESELECTION)
   UNSUPPORTED_MSG(EM_LIMITTEXT) /* also known as EM_SETLIMITTEXT */
   UNSUPPORTED_MSG(EM_PASTESPECIAL)
@@ -1079,7 +1079,6 @@ LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lP
   UNSUPPORTED_MSG(EM_SETWORDBREAKPROC)
   UNSUPPORTED_MSG(EM_SETWORDBREAKPROCEX)
   UNSUPPORTED_MSG(EM_SHOWSCROLLBAR)
-  UNSUPPORTED_MSG(EM_SETZOOM)
   UNSUPPORTED_MSG(WM_SETFONT)
   UNSUPPORTED_MSG(WM_STYLECHANGING)
   UNSUPPORTED_MSG(WM_STYLECHANGED)
@@ -1580,6 +1579,14 @@ LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lP
     FINDTEXTEXW *ex = (FINDTEXTEXW *)lParam;
     return ME_FindText(editor, wParam, &ex->chrg, ex->lpstrText, &ex->chrgText);
   }
+  case EM_GETZOOM:
+    if (!wParam || !lParam)
+      return FALSE;
+    *(int *)wParam = editor->nZoomNumerator;
+    *(int *)lParam = editor->nZoomDenominator;
+    return TRUE;
+  case EM_SETZOOM:
+    return ME_SetZoom(editor, wParam, lParam);
   case WM_CREATE:
     ME_CommitUndo(editor);
     ME_WrapMarkedParagraphs(editor);
@@ -1736,10 +1743,7 @@ LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lP
   }
   case WM_SIZE:
   {
-    ME_MarkAllForWrapping(editor);
-    ME_WrapMarkedParagraphs(editor);
-    ME_UpdateScrollBar(editor);
-    ME_Repaint(editor);
+    ME_RewrapRepaint(editor);
     return DefWindowProcW(hWnd, msg, wParam, lParam);
   }
   case EM_GETOLEINTERFACE:
@@ -1755,6 +1759,7 @@ LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lP
   return 0L;
 }
 
+
 /******************************************************************
  *        RichEdit10ANSIWndProc (RICHED20.9)
  */

dlls/riched20/editor.h

@@ -191,6 +191,7 @@ void ME_MarkAllForWrapping(ME_TextEditor *editor);
 /* paint.c */
 void ME_PaintContent(ME_TextEditor *editor, HDC hDC, BOOL bOnlyNew, RECT *rcUpdate);
 void ME_Repaint(ME_TextEditor *editor);
+void ME_RewrapRepaint(ME_TextEditor *editor);
 void ME_UpdateRepaint(ME_TextEditor *editor);
 void ME_DrawParagraph(ME_Context *c, ME_DisplayItem *paragraph);
 void ME_UpdateScrollBar(ME_TextEditor *editor);
@@ -198,6 +199,7 @@ int ME_GetYScrollPos(ME_TextEditor *editor);
 void ME_EnsureVisible(ME_TextEditor *editor, ME_DisplayItem *pRun);
 COLORREF ME_GetBackColor(ME_TextEditor *editor);
 void ME_Scroll(ME_TextEditor *editor, int cx, int cy);
+BOOL ME_SetZoom(ME_TextEditor *editor, int numerator, int denominator);
 
 /* richole.c */
 extern LRESULT CreateIRichEditOle(LPVOID *);

dlls/riched20/editstr.h

@@ -269,6 +269,7 @@ typedef struct tagME_TextEditor
   ME_OutStream *pStream;
   BOOL bScrollX, bScrollY;
   int nScrollPosY;
+  int nZoomNumerator, nZoomDenominator;
 } ME_TextEditor;
 
 typedef struct tagME_Context

dlls/riched20/paint.c

@@ -173,6 +173,17 @@ void ME_UpdateRepaint(ME_TextEditor *editor)
   ME_SendSelChange(editor);
 }
 
+
+void
+ME_RewrapRepaint(ME_TextEditor *editor)
+{
+  ME_MarkAllForWrapping(editor);
+  ME_WrapMarkedParagraphs(editor);
+  ME_UpdateScrollBar(editor);
+  ME_Repaint(editor);
+}
+
+
 static void ME_DrawTextWithStyle(ME_Context *c, int x, int y, LPCWSTR szText, int nChars, 
   ME_Style *s, int *width, int nSelFrom, int nSelTo, int ymin, int cy) {
   HDC hDC = c->hDC;
@@ -193,7 +204,17 @@ static void ME_DrawTextWithStyle(ME_Context *c, int x, int y, LPCWSTR szText, in
     if (s->fmt.dwEffects & CFE_SUBSCRIPT) yTwipsOffset = -s->fmt.yHeight/12;
   }
   if (yTwipsOffset)
-    yOffset = yTwipsOffset*GetDeviceCaps(hDC, LOGPIXELSY)/1440;
+  {
+    int numerator = 1;
+    int denominator = 1;
+    
+    if (c->editor->nZoomNumerator)
+    {
+      numerator = c->editor->nZoomNumerator;
+      denominator = c->editor->nZoomDenominator;
+    }
+    yOffset = yTwipsOffset * GetDeviceCaps(hDC, LOGPIXELSY) * numerator / denominator / 1440;
+  }
   ExtTextOutW(hDC, x, y-yOffset, 0, NULL, szText, nChars, NULL);
   if (width) {
     SIZE sz;
@@ -484,3 +505,25 @@ void ME_EnsureVisible(ME_TextEditor *editor, ME_DisplayItem *pRun)
     UpdateWindow(hWnd);
   }
 }
+        
+
+BOOL
+ME_SetZoom(ME_TextEditor *editor, int numerator, int denominator)
+{
+  /* TODO: Zoom images and objects */
+
+  if (numerator != 0)
+  {
+    if (denominator == 0)
+      return FALSE;
+    if (1.0 / 64.0 > (float)numerator / (float)denominator
+        || (float)numerator / (float)denominator > 64.0)
+      return FALSE;
+  }
+  
+  editor->nZoomNumerator = numerator;
+  editor->nZoomDenominator = denominator;
+  
+  ME_RewrapRepaint(editor);
+  return TRUE;
+}

dlls/riched20/style.c

@@ -249,14 +249,23 @@ void ME_DumpStyleToBuf(CHARFORMAT2W *pFmt, char buf[2048])
   ME_DumpStyleEffect(&p, "Text protected:", pFmt, CFM_PROTECTED);
 }
 
-void ME_LogFontFromStyle(HDC hDC, LOGFONTW *lf, ME_Style *s)
+
+static void
+ME_LogFontFromStyle(HDC hDC, LOGFONTW *lf, ME_Style *s, int nZoomNumerator, int nZoomDenominator)
 {
   int rx, ry;
   rx = GetDeviceCaps(hDC, LOGPIXELSX);
   ry = GetDeviceCaps(hDC, LOGPIXELSY);
   ZeroMemory(lf, sizeof(LOGFONTW));
   lstrcpyW(lf->lfFaceName, s->fmt.szFaceName);
-  lf->lfHeight = -s->fmt.yHeight*ry/1440;
+
+  if (nZoomNumerator == 0)
+  {
+    nZoomNumerator = 1;
+    nZoomDenominator = 1;
+  }
+  lf->lfHeight = -s->fmt.yHeight*ry*nZoomNumerator/nZoomDenominator/1440;
+  
   lf->lfWeight = 400;
   if (s->fmt.dwEffects & s->fmt.dwMask & CFM_BOLD)
     lf->lfWeight = 700;
@@ -294,7 +303,7 @@ HFONT ME_SelectStyleFont(ME_TextEditor *editor, HDC hDC, ME_Style *s)
   assert(hDC);
   assert(s);
   
-  ME_LogFontFromStyle(hDC, &lf, s);
+  ME_LogFontFromStyle(hDC, &lf, s, editor->nZoomNumerator, editor->nZoomDenominator);
   
   for (i=0; i<HFONT_CACHE_SIZE; i++)
     editor->pFontCache[i].nAge++;