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/* Copyright (C) 2002-2005 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
#include <rfb_win32/WMCursor.h>
#include <rfb_win32/OSVersion.h>
#include <rfb_win32/DynamicFn.h>
#include <rfb/Exception.h>
#include <rfb/LogWriter.h>
using namespace rdr;
using namespace rfb;
using namespace rfb::win32;
static LogWriter vlog("WMCursor");
#ifdef CURSOR_SHOWING
#define RFB_HAVE_GETCURSORINFO
#else
#pragma message(" NOTE: Not building GetCursorInfo support.")
#endif
#ifdef RFB_HAVE_GETCURSORINFO
typedef BOOL (WINAPI *_GetCursorInfo_proto)(PCURSORINFO pci);
DynamicFn<_GetCursorInfo_proto> _GetCursorInfo(_T("user32.dll"), "GetCursorInfo");
#endif
WMCursor::WMCursor() : hooks(0), use_getCursorInfo(false), cursor(0) {
#ifdef RFB_HAVE_GETCURSORINFO
// 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();
#endif
cursor = (HCURSOR)LoadImage(0, IDC_ARROW, IMAGE_CURSOR, 0, 0, LR_DEFAULTSIZE | LR_SHARED);
if (!use_getCursorInfo) {
hooks = new WMCursorHooks();
if (hooks && hooks->start()) {
vlog.info("falling back to cursor hooking: %p", hooks);
} else {
delete hooks;
hooks = 0;
vlog.error("unable to monitor cursor shape");
}
} else {
vlog.info("using GetCursorInfo");
}
}
WMCursor::~WMCursor() {
vlog.debug("deleting WMCursorHooks (%p)", hooks);
if (hooks)
delete hooks;
}
WMCursor::Info
WMCursor::getCursorInfo() {
Info result;
#ifdef RFB_HAVE_GETCURSORINFO
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;
}
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