Initial revision

git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@2 3789f03b-4d11-0410-bbf8-ca57d06f2519

1 files changed, 98 insertions, 0 deletions

diff --git a/rfb_win32/WMCursor.cxx b/rfb_win32/WMCursor.cxx
new file mode 100644
index 00000000..871d9376
--- /dev/null
+++ b/rfb_win32/WMCursor.cxx
@@ -0,0 +1,98 @@
+/* Copyright (C) 2002-2003 RealVNC Ltd.  All Rights Reserved.
+ *    
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+// -=- WMCursor.cxx
+
+// *** DOESN'T SEEM TO WORK WITH GetCursorInfo POS CODE BUILT-IN UNDER NT4SP6
+// *** INSTEAD, WE LOOK FOR Win2000/Win98 OR ABOVE
+#define WINVER 0x0500
+
+#include <rfb_win32/WMCursor.h>
+#include <rfb_win32/OSVersion.h>
+#include <rfb_win32/Win32Util.h>
+#include <rfb/Exception.h>
+#include <rfb/LogWriter.h>
+
+using namespace rdr;
+using namespace rfb;
+using namespace rfb::win32;
+
+static LogWriter vlog("WMCursor");
+
+
+typedef BOOL (WINAPI *_GetCursorInfo_proto)(PCURSORINFO pci);
+DynamicFn<_GetCursorInfo_proto> _GetCursorInfo(_T("user32.dll"), "GetCursorInfo");
+
+
+WMCursor::WMCursor() : hooks(0), library(0), use_getCursorInfo(false), cursor(0) {
+#if (WINVER >= 0x0500)
+  // Check the OS version
+  bool is_win98 = (osVersion.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) &&
+    (osVersion.dwMajorVersion > 4) || ((osVersion.dwMajorVersion == 4) && (osVersion.dwMinorVersion > 0));
+  bool is_win2K = (osVersion.dwPlatformId == VER_PLATFORM_WIN32_NT) && (osVersion.dwMajorVersion >= 5);
+
+  // Use GetCursorInfo if OS version is sufficient
+  use_getCursorInfo = (is_win98 || is_win2K) && _GetCursorInfo.isValid();
+#else
+#pragma message ("not building in GetCursorInfo support")
+#endif
+  if (!use_getCursorInfo) {
+    hooks = new WMCursorHooks();
+    if (hooks && hooks->start()) {
+      vlog.info("falling back to cursor hooking");
+    } else {
+      delete hooks;
+      hooks = 0;
+      vlog.error("unable to monitor cursor shape");
+    }
+  } else {
+    vlog.info("using GetCursorInfo");
+  }
+  cursor = (HCURSOR)LoadImage(0, IDC_ARROW, IMAGE_CURSOR, 0, 0, LR_DEFAULTSIZE | LR_SHARED);
+}
+
+WMCursor::~WMCursor() {
+  if (hooks) delete hooks;
+  if (library) FreeLibrary(library);
+}
+  
+WMCursor::Info
+WMCursor::getCursorInfo() {
+  Info result;
+#if (WINVER >= 0x0500)
+  if (use_getCursorInfo) {
+    CURSORINFO info;
+    info.cbSize = sizeof(CURSORINFO);
+    if ((*_GetCursorInfo)(&info)) {
+      result.cursor = info.hCursor;
+      result.position = Point(info.ptScreenPos.x, info.ptScreenPos.y);
+      result.visible = info.flags & CURSOR_SHOWING;
+      return result;
+    }
+  }
+#endif
+  // Fall back to the old way of doing things
+  POINT pos;
+  if (hooks) cursor = hooks->getCursor();
+  result.cursor = cursor;
+  result.visible = cursor != 0;
+  GetCursorPos(&pos);
+  result.position.x = pos.x;
+  result.position.y = pos.y;
+  return result;
+}