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reactos/base/applications/osk/main.c

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/*
* PROJECT: ReactOS On-Screen Keyboard
* LICENSE: GPL - See COPYING in the top level directory
* FILE: base/applications/osk/main.c
* PURPOSE: On-screen keyboard.
* PROGRAMMERS: Denis ROBERT
*/
/* INCLUDES *******************************************************************/
#include "osk.h"
/* GLOBALS ********************************************************************/
OSK_GLOBALS Globals;
/* Functions */
int OSK_SetImage(int IdDlgItem, int IdResource);
int OSK_DlgInitDialog(HWND hDlg);
int OSK_DlgClose(void);
int OSK_DlgTimer(void);
BOOL OSK_DlgCommand(WPARAM wCommand, HWND hWndControl);
BOOL OSK_ReleaseKey(WORD ScanCode);
INT_PTR APIENTRY OSK_DlgProc(HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam);
int WINAPI _tWinMain(HINSTANCE, HINSTANCE, LPTSTR, int);
/* FUNCTIONS ******************************************************************/
/***********************************************************************
*
* OSK_SetImage
*
* Set an image on a button
*/
int OSK_SetImage(int IdDlgItem, int IdResource)
{
HICON hIcon;
HWND hWndItem;
hIcon = (HICON)LoadImage(Globals.hInstance, MAKEINTRESOURCE(IdResource),
IMAGE_ICON, 16, 16, LR_DEFAULTCOLOR);
if (hIcon == NULL)
return FALSE;
hWndItem = GetDlgItem(Globals.hMainWnd, IdDlgItem);
if (hWndItem == NULL)
{
DestroyIcon(hIcon);
return FALSE;
}
SendMessage(hWndItem, BM_SETIMAGE, (WPARAM)IMAGE_ICON, (LPARAM)hIcon);
/* The system automatically deletes these resources when the process that created them terminates (MSDN) */
return TRUE;
}
/***********************************************************************
*
* OSK_DlgInitDialog
*
* Handling of WM_INITDIALOG
*/
int OSK_DlgInitDialog(HWND hDlg)
{
HMONITOR monitor;
MONITORINFO info;
POINT Pt;
RECT rcWindow;
/* Save handle */
Globals.hMainWnd = hDlg;
/* Get screen info */
memset(&Pt, 0, sizeof(Pt));
monitor = MonitorFromPoint(Pt, MONITOR_DEFAULTTOPRIMARY );
info.cbSize = sizeof(info);
GetMonitorInfoW(monitor, &info);
/* Move the dialog on the bottom of main screen */
GetWindowRect(hDlg, &rcWindow);
MoveWindow(hDlg,
(info.rcMonitor.left + info.rcMonitor.right) / 2 - // Center of screen
(rcWindow.right - rcWindow.left) / 2, // - half size of dialog
info.rcMonitor.bottom - // Bottom of screen
(rcWindow.bottom - rcWindow.top), // - size of window
rcWindow.right - rcWindow.left, // Width
rcWindow.bottom - rcWindow.top, // Height
TRUE);
/* Set icon on visual buttons */
OSK_SetImage(SCAN_CODE_15, IDI_BACK);
OSK_SetImage(SCAN_CODE_16, IDI_TAB);
OSK_SetImage(SCAN_CODE_30, IDI_CAPS_LOCK);
OSK_SetImage(SCAN_CODE_43, IDI_RETURN);
OSK_SetImage(SCAN_CODE_44, IDI_SHIFT);
OSK_SetImage(SCAN_CODE_57, IDI_SHIFT);
OSK_SetImage(SCAN_CODE_127, IDI_REACTOS);
OSK_SetImage(SCAN_CODE_128, IDI_REACTOS);
OSK_SetImage(SCAN_CODE_129, IDI_MENU);
OSK_SetImage(SCAN_CODE_80, IDI_HOME);
OSK_SetImage(SCAN_CODE_85, IDI_PG_UP);
OSK_SetImage(SCAN_CODE_86, IDI_PG_DOWN);
OSK_SetImage(SCAN_CODE_79, IDI_LEFT);
OSK_SetImage(SCAN_CODE_83, IDI_TOP);
OSK_SetImage(SCAN_CODE_84, IDI_BOTTOM);
OSK_SetImage(SCAN_CODE_89, IDI_RIGHT);
/* Create a green brush for leds */
Globals.hBrushGreenLed = CreateSolidBrush(RGB(0, 255, 0));
/* Set a timer for periodics tasks */
Globals.iTimer = SetTimer(hDlg, 0, 200, NULL);
return TRUE;
}
/***********************************************************************
*
* OSK_DlgClose
*
* Handling of WM_CLOSE
*/
int OSK_DlgClose(void)
{
KillTimer(Globals.hMainWnd, Globals.iTimer);
/* Release Ctrl, Shift, Alt keys */
OSK_ReleaseKey(SCAN_CODE_44); // Left shift
OSK_ReleaseKey(SCAN_CODE_57); // Right shift
OSK_ReleaseKey(SCAN_CODE_58); // Left ctrl
OSK_ReleaseKey(SCAN_CODE_60); // Left alt
OSK_ReleaseKey(SCAN_CODE_62); // Right alt
OSK_ReleaseKey(SCAN_CODE_64); // Right ctrl
/* delete GDI objects */
if (Globals.hBrushGreenLed) DeleteObject(Globals.hBrushGreenLed);
return TRUE;
}
/***********************************************************************
*
* OSK_DlgTimer
*
* Handling of WM_TIMER
*/
int OSK_DlgTimer(void)
{
/* FIXME: To be deleted when ReactOS will support WS_EX_NOACTIVATE */
HWND hWndActiveWindow;
hWndActiveWindow = GetForegroundWindow();
if (hWndActiveWindow != NULL && hWndActiveWindow != Globals.hMainWnd)
{
Globals.hActiveWnd = hWndActiveWindow;
}
/* Always redraw leds because it can be changed by the real keyboard) */
InvalidateRect(GetDlgItem(Globals.hMainWnd, IDC_LED_NUM), NULL, TRUE);
InvalidateRect(GetDlgItem(Globals.hMainWnd, IDC_LED_CAPS), NULL, TRUE);
InvalidateRect(GetDlgItem(Globals.hMainWnd, IDC_LED_SCROLL), NULL, TRUE);
return TRUE;
}
/***********************************************************************
*
* OSK_DlgCommand
*
* All handling of dialog command
*/
BOOL OSK_DlgCommand(WPARAM wCommand, HWND hWndControl)
{
WORD ScanCode;
INPUT Input;
BOOL bExtendedKey;
BOOL bKeyDown;
BOOL bKeyUp;
LONG WindowStyle;
/* FIXME: To be deleted when ReactOS will support WS_EX_NOACTIVATE */
if (Globals.hActiveWnd)
{
MSG msg;
SetForegroundWindow(Globals.hActiveWnd);
while (PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
/* KeyDown and/or KeyUp ? */
WindowStyle = GetWindowLong(hWndControl, GWL_STYLE);
if ((WindowStyle & BS_AUTOCHECKBOX) == BS_AUTOCHECKBOX)
{
/* 2-states key like Shift, Alt, Ctrl, ... */
if (SendMessage(hWndControl, BM_GETCHECK, 0, 0) == BST_CHECKED)
{
bKeyDown = TRUE;
bKeyUp = FALSE;
}
else
{
bKeyDown = FALSE;
bKeyUp = TRUE;
}
}
else
{
/* Other key */
bKeyDown = TRUE;
bKeyUp = TRUE;
}
/* Extended key ? */
ScanCode = wCommand;
if (ScanCode & 0x0200)
bExtendedKey = TRUE;
else
bExtendedKey = FALSE;
ScanCode &= 0xFF;
/* Press and release the key */
if (bKeyDown)
{
Input.type = INPUT_KEYBOARD;
Input.ki.wVk = 0;
Input.ki.wScan = ScanCode;
Input.ki.time = GetTickCount();
Input.ki.dwExtraInfo = GetMessageExtraInfo();
Input.ki.dwFlags = KEYEVENTF_SCANCODE;
if (bExtendedKey) Input.ki.dwFlags |= KEYEVENTF_EXTENDEDKEY;
SendInput(1, &Input, sizeof(Input));
}
if (bKeyUp)
{
Input.type = INPUT_KEYBOARD;
Input.ki.wVk = 0;
Input.ki.wScan = ScanCode;
Input.ki.time = GetTickCount();
Input.ki.dwExtraInfo = GetMessageExtraInfo();
Input.ki.dwFlags = KEYEVENTF_SCANCODE | KEYEVENTF_KEYUP;
if (bExtendedKey) Input.ki.dwFlags |= KEYEVENTF_EXTENDEDKEY;
SendInput(1, &Input, sizeof(Input));
}
return TRUE;
}
/***********************************************************************
*
* OSK_ReleaseKey
*
* Release the key of ID wCommand
*/
BOOL OSK_ReleaseKey(WORD ScanCode)
{
INPUT Input;
BOOL bExtendedKey;
LONG WindowStyle;
HWND hWndControl;
/* Is it a 2-states key ? */
hWndControl = GetDlgItem(Globals.hMainWnd, ScanCode);
WindowStyle = GetWindowLong(hWndControl, GWL_STYLE);
if ((WindowStyle & BS_AUTOCHECKBOX) != BS_AUTOCHECKBOX) return FALSE;
/* Is the key down ? */
if (SendMessage(hWndControl, BM_GETCHECK, 0, 0) != BST_CHECKED) return TRUE;
/* Extended key ? */
if (ScanCode & 0x0200)
bExtendedKey = TRUE;
else
bExtendedKey = FALSE;
ScanCode &= 0xFF;
/* Release the key */
Input.type = INPUT_KEYBOARD;
Input.ki.wVk = 0;
Input.ki.wScan = ScanCode;
Input.ki.time = GetTickCount();
Input.ki.dwExtraInfo = GetMessageExtraInfo();
Input.ki.dwFlags = KEYEVENTF_SCANCODE | KEYEVENTF_KEYUP;
if (bExtendedKey) Input.ki.dwFlags |= KEYEVENTF_EXTENDEDKEY;
SendInput(1, &Input, sizeof(Input));
return TRUE;
}
/***********************************************************************
*
* OSK_DlgProc
*/
INT_PTR APIENTRY OSK_DlgProc(HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch (msg)
{
case WM_INITDIALOG:
OSK_DlgInitDialog(hDlg);
return TRUE;
case WM_TIMER:
OSK_DlgTimer();
return TRUE;
case WM_CTLCOLORSTATIC:
if ((HWND)lParam == GetDlgItem(hDlg, IDC_LED_NUM))
{
if (GetKeyState(VK_NUMLOCK) & 0x0001)
return (INT_PTR)Globals.hBrushGreenLed;
else
return (INT_PTR)GetStockObject(BLACK_BRUSH);
}
if ((HWND)lParam == GetDlgItem(hDlg, IDC_LED_CAPS))
{
if (GetKeyState(VK_CAPITAL) & 0x0001)
return (INT_PTR)Globals.hBrushGreenLed;
else
return (INT_PTR)GetStockObject(BLACK_BRUSH);
}
if ((HWND)lParam == GetDlgItem(hDlg, IDC_LED_SCROLL))
{
if (GetKeyState(VK_SCROLL) & 0x0001)
return (INT_PTR)Globals.hBrushGreenLed;
else
return (INT_PTR)GetStockObject(BLACK_BRUSH);
}
break;
case WM_COMMAND:
if (wParam == IDCANCEL)
EndDialog(hDlg, FALSE);
else if (wParam != IDC_STATIC)
OSK_DlgCommand(wParam, (HWND) lParam);
break;
case WM_CLOSE:
OSK_DlgClose();
break;
}
return 0;
}
/***********************************************************************
*
* WinMain
*/
int WINAPI _tWinMain(HINSTANCE hInstance,
HINSTANCE prev,
LPTSTR cmdline,
int show)
{
HANDLE hMutex;
UNREFERENCED_PARAMETER(prev);
UNREFERENCED_PARAMETER(cmdline);
UNREFERENCED_PARAMETER(show);
ZeroMemory(&Globals, sizeof(Globals));
Globals.hInstance = hInstance;
/* Rry to open a mutex for a single instance */
hMutex = OpenMutexA(MUTEX_ALL_ACCESS, FALSE, "osk");
if (!hMutex)
{
/* Mutex doesn<73>t exist. This is the first instance so create the mutex. */
hMutex = CreateMutexA(NULL, FALSE, "osk");
DialogBox(hInstance,
MAKEINTRESOURCE(MAIN_DIALOG),
GetDesktopWindow(),
OSK_DlgProc);
/* Delete the mutex */
if (hMutex) CloseHandle(hMutex);
}
else
{
/* Programme already launched */
/* Delete the mutex */
CloseHandle(hMutex);
ExitProcess(0);
}
return 0;
}
/* EOF */
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