khanat-opennel-code/code/nel/src/misc/system_utils.cpp

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// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
// Copyright (C) 2010 Winch Gate Property Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "stdmisc.h"
#include "nel/misc/system_utils.h"
#ifdef NL_OS_WINDOWS
#define NOMINMAX
#include <windows.h>
#ifdef _WIN32_WINNT_WIN7
// only supported by Windows 7 Platform SDK
#include <ShObjIdl.h>
#define TASKBAR_PROGRESS 1
#endif
#endif
using namespace std;
// Key in registry
static string RootKey;
static const uint32 KeyMaxLength = 1024;
namespace NLMISC {
nlWindow CSystemUtils::s_window = EmptyWindow;
bool CSystemUtils::init()
{
#ifdef NL_OS_WINDOWS
// initialize COM
HRESULT hr = CoInitializeEx(NULL, COINIT_MULTITHREADED);
if (FAILED(hr)) return false;
#endif
return true;
}
bool CSystemUtils::uninit()
{
#ifdef NL_OS_WINDOWS
// uninitialize COM
CoUninitialize();
#endif
return true;
}
void CSystemUtils::setWindow(nlWindow window)
{
s_window = window;
}
bool CSystemUtils::updateProgressBar(uint value, uint total)
{
#ifdef TASKBAR_PROGRESS
if (s_window == NULL)
{
nlwarning("No window has be set with CSystemUtils::setWindow(), progress bar can't be displayed");
return false;
}
ITaskbarList3 *pTaskbarList = NULL;
// instanciate the taskbar control COM object
HRESULT hr = CoCreateInstance(CLSID_TaskbarList, NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&pTaskbarList));
// error can be ignored because Windows versions before Windows 7 doesn't support it
if (FAILED(hr) || !pTaskbarList) return false;
if (total)
{
// update the taskbar progress
hr = pTaskbarList->SetProgressValue(s_window, (ULONGLONG)value, (ULONGLONG)total);
}
else
{
// don't update anymore the progress
hr = pTaskbarList->SetProgressState(s_window, value == 0 ? TBPF_INDETERMINATE:TBPF_NOPROGRESS);
}
// release the interface
pTaskbarList->Release();
#endif // TASKBAR_PROGRESS
return true;
}
bool CSystemUtils::copyTextToClipboard(const ucstring &text)
{
if (!text.size()) return false;
bool res = false;
#ifdef NL_OS_WINDOWS
if (OpenClipboard(NULL))
{
// check if unicode format is supported by clipboard
bool isUnicode = (IsClipboardFormatAvailable(CF_UNICODETEXT) == TRUE);
// allocates a buffer to copy text in global memory
HGLOBAL mem = GlobalAlloc(GHND|GMEM_DDESHARE, (text.size()+1) * (isUnicode ? 2:1));
if (mem)
{
// create a lock on this buffer
void *hLock = GlobalLock(mem);
// copy text to this buffer
if (isUnicode)
wcscpy((wchar_t*)hLock, (const wchar_t*)text.c_str());
else
strcpy((char*)hLock, text.toString().c_str());
// unlock buffer
GlobalUnlock(mem);
// empty clipboard
EmptyClipboard();
// set new data to clipboard in the right format
SetClipboardData(isUnicode ? CF_UNICODETEXT:CF_TEXT, mem);
res = true;
}
CloseClipboard();
}
#endif
return res;
}
bool CSystemUtils::pasteTextFromClipboard(ucstring &text)
{
bool res = false;
#ifdef NL_OS_WINDOWS
if (OpenClipboard(NULL))
{
// check if unicode format is supported by clipboard
bool isUnicode = (IsClipboardFormatAvailable(CF_UNICODETEXT) == TRUE);
// get data from clipboard (if not of this type, they are converted)
// warning, this code can't be debuggued in VC++ IDE, hObj will be always NULL
HANDLE hObj = GetClipboardData(isUnicode ? CF_UNICODETEXT:CF_TEXT);
if (hObj)
{
// create a lock on clipboard data
void *hLock = GlobalLock(hObj);
if (hLock != NULL)
{
// retrieve clipboard data
if (isUnicode)
text = (const ucchar*)hLock;
else
text = (const char*)hLock;
// unlock data
GlobalUnlock(hObj);
res = true;
}
}
CloseClipboard();
}
#endif
return res;
}
bool CSystemUtils::supportUnicode()
{
static bool init = false;
static bool unicodeSupported = false;
if (!init)
{
init = true;
#ifdef NL_OS_WINDOWS
OSVERSIONINFO osvi;
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
// get Windows version
if (GetVersionEx(&osvi))
{
if (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT)
{
// unicode is supported since Windows NT 4.0
if (osvi.dwMajorVersion >= 4)
{
unicodeSupported = true;
}
}
}
#else
unicodeSupported = true;
#endif
}
return unicodeSupported;
}
bool CSystemUtils::isAzertyKeyboard()
{
#ifdef NL_OS_WINDOWS
uint16 klId = uint16((uint32)GetKeyboardLayout(0) & 0xFFFF);
// 0x040c is French, 0x080c is Belgian
if (klId == 0x040c || klId == 0x080c)
return true;
#endif
return false;
}
bool CSystemUtils::isScreensaverEnabled()
{
bool res = false;
#ifdef NL_OS_WINDOWS
// old code, is not working anymore
// BOOL bRetValue;
// SystemParametersInfoA(SPI_GETSCREENSAVEACTIVE, 0, &bRetValue, 0);
// res = (bRetValue == TRUE);
HKEY hKeyScreenSaver = NULL;
LSTATUS lReturn = RegOpenKeyExA(HKEY_CURRENT_USER, TEXT("Control Panel\\Desktop"), 0, KEY_QUERY_VALUE, &hKeyScreenSaver);
if (lReturn == ERROR_SUCCESS)
{
DWORD dwType = 0L;
DWORD dwSize = KeyMaxLength;
unsigned char Buffer[KeyMaxLength] = {0};
lReturn = RegQueryValueExA(hKeyScreenSaver, TEXT("SCRNSAVE.EXE"), NULL, &dwType, NULL, &dwSize);
// if SCRNSAVE.EXE is present, check also if it's empty
if (lReturn == ERROR_SUCCESS)
res = (Buffer[0] != '\0');
}
RegCloseKey(hKeyScreenSaver);
#endif
return res;
}
bool CSystemUtils::enableScreensaver(bool screensaver)
{
bool res = false;
#ifdef NL_OS_WINDOWS
res = (SystemParametersInfoA(SPI_SETSCREENSAVEACTIVE, screensaver ? TRUE:FALSE, NULL, 0) == TRUE);
#endif
return res;
}
std::string CSystemUtils::getRootKey()
{
return RootKey;
}
void CSystemUtils::setRootKey(const std::string &root)
{
RootKey = root;
}
string CSystemUtils::getRegKey(const string &Entry)
{
string ret;
#ifdef NL_OS_WINDOWS
HKEY hkey;
if(RegOpenKeyEx(HKEY_CURRENT_USER, RootKey.c_str(), 0, KEY_READ, &hkey) == ERROR_SUCCESS)
{
DWORD dwType = 0L;
DWORD dwSize = KeyMaxLength;
unsigned char Buffer[KeyMaxLength];
if(RegQueryValueEx(hkey, Entry.c_str(), NULL, &dwType, Buffer, &dwSize) != ERROR_SUCCESS)
{
nlwarning("Can't get the reg key '%s'", Entry.c_str());
}
else
{
ret = (char*)Buffer;
}
RegCloseKey(hkey);
}
else
{
nlwarning("Can't get the reg key '%s'", Entry.c_str());
}
#endif
return ret;
}
bool CSystemUtils::setRegKey(const string &ValueName, const string &Value)
{
bool res = false;
#ifdef NL_OS_WINDOWS
HKEY hkey;
DWORD dwDisp;
if (RegCreateKeyExA(HKEY_CURRENT_USER, RootKey.c_str(), 0, "", REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &hkey, &dwDisp) == ERROR_SUCCESS)
{
if (RegSetValueExA(hkey, ValueName.c_str(), 0L, REG_SZ, (const BYTE *)Value.c_str(), (DWORD)(Value.size())+1) == ERROR_SUCCESS)
res = true;
RegCloseKey(hkey);
}
else
{
nlwarning("Can't set the reg key '%s' '%s'", ValueName.c_str(), Value.c_str());
}
#endif
return res;
}
uint CSystemUtils::getCurrentColorDepth()
{
uint depth = 0;
#ifdef NL_OS_WINDOWS
HWND desktopWnd = GetDesktopWindow();
if (desktopWnd)
{
HDC desktopDC = GetWindowDC(desktopWnd);
if (desktopDC)
{
depth = (uint) GetDeviceCaps(desktopDC, BITSPIXEL);
ReleaseDC(desktopWnd, desktopDC);
}
}
#else
depth = 24; // temporary fix for compilation under Linux
/*
Display *display = XOpenDisplay(NULL);
if (display)
{
depth = (uint) DefaultDepth(display, DefaultScreen(display));
XCloseDisplay(display);
}
*/
#endif
return depth;
}
} // NLMISC