Not part of the build yet. Default plugin.

modules/plugin/samples/default/windows/utils.cpp

@@ -0,0 +1,156 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is Mozilla Communicator client code.
+ *
+ * The Initial Developer of the Original Code is Netscape Communications
+ * Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Contributor(s): 
+ */
+
+#include <windows.h>
+#include <windowsx.h>
+
+#include "plugin.h"
+
+// open the registry, create if necessary
+HKEY openRegistry()      
+{
+  HKEY phkResult;
+
+  if(RegCreateKey(HKEY_CURRENT_USER, REGISTRY_PLACE, &phkResult) != ERROR_SUCCESS)
+    MessageBox(0, "Error creating Default Plugin registry key", "Default Plugin", MB_OK);
+
+  return phkResult;
+}
+
+// return TRUE if we've never seen this MIME type before
+BOOL IsNewMimeType(LPSTR mime)   
+{
+  HKEY hkey = openRegistry();
+  DWORD dwType, keysize = 512;
+  char keybuf[512];
+
+  if(RegQueryValueEx(hkey, mime, 0, &dwType, (LPBYTE) &keybuf, &keysize) == ERROR_SUCCESS)
+  {
+    // key exists, must have already been here...
+    return FALSE;
+  }
+  else 
+  {
+    if(RegSetValueEx(hkey, mime, 0,  REG_SZ, (LPBYTE) "(none)", 7) != ERROR_SUCCESS)
+      MessageBox(0, "Error adding MIME type value", "Default Plugin", MB_OK);
+
+    return TRUE;
+  }
+}
+
+// string length in pixels for the specific window (selected font)
+static int getWindowStringLength(HWND hWnd, LPSTR lpsz)
+{
+  SIZE sz;
+  HDC hDC = GetDC(hWnd);
+  HFONT hWindowFont = GetWindowFont(hWnd);
+  HFONT hFontOld = SelectFont(hDC, hWindowFont);
+  GetTextExtentPoint32(hDC, lpsz, lstrlen(lpsz), &sz);
+  POINT pt;
+  pt.x = sz.cx;
+  pt.y = sz.cy;
+  LPtoDP(hDC, &pt, 1);
+  SelectFont(hDC, hFontOld);
+  ReleaseDC(hWnd, hDC);
+  return (int)pt.x;
+}
+
+/****************************************************************/
+/*                                                              */
+/* void SetDlgItemTextWrapped(HWND hWnd, int iID, LPSTR szText) */
+/*                                                              */
+/* helper to wrap long lines in a static control, which do not  */
+/* wrap automatically if they do not have space characters      */
+/*                                                              */
+/****************************************************************/
+void SetDlgItemTextWrapped(HWND hWnd, int iID, LPSTR szText)
+{
+  HWND hWndStatic = GetDlgItem(hWnd, iID);
+  if((szText == NULL) || (lstrlen(szText) == 0))
+  {
+    SetDlgItemText(hWnd, iID, "");
+    return;
+  }
+
+  RECT rc;
+  GetClientRect(hWndStatic, &rc);
+
+  int iStaticLength = rc.right - rc.left;
+  int iStringLength = getWindowStringLength(hWndStatic, szText);
+
+  if(iStringLength <= iStaticLength)
+  {
+    SetDlgItemText(hWnd, iID, szText);
+    return;
+  }
+
+  int iBreaks = iStringLength/iStaticLength;
+  if(iBreaks <= 0)
+    return;
+
+  char * pBuf = new char[iStringLength + iBreaks + 1];
+  if(pBuf == NULL)
+    return;
+
+  lstrcpy(pBuf, "");
+
+  int iStart = 0;
+  int iLines = 0;
+  for(int i = 0; i < iStringLength; i++)
+  {
+    char * sz = &szText[iStart];
+    int iIndex = i - iStart;
+    char ch = sz[iIndex + 1];
+
+    sz[iIndex + 1] = '\0';
+
+    int iLength = getWindowStringLength(hWndStatic, sz);
+
+    if(iLength < iStaticLength)
+    {
+      sz[iIndex + 1] = ch;
+      if(iLines == iBreaks)
+      {
+        lstrcat(pBuf, sz);
+        break;
+      }
+      continue;
+    }
+
+    sz[iIndex + 1] = ch;  // restore zeroed element
+    i--;                  // go one step back
+
+    ch = sz[iIndex];
+    sz[iIndex] = '\0';    // terminate string one char shorter
+
+    lstrcat(pBuf, sz);    // append the string
+    lstrcat(pBuf, " ");   // append space character for successful wrapping
+
+    iStart += lstrlen(sz);// shift new start position
+    sz[iIndex] = ch;      // restore zeroed element
+    iLines++;             // count lines
+  }
+
+  SetDlgItemText(hWnd, iID, pBuf);
+
+  delete [] pBuf;
+}