/*

SDL - Simple DirectMedia Layer

Copyright (C) 1997-2009 Sam Lantinga

This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Lesser General Public

License as published by the Free Software Foundation; either

version 2.1 of the License, or (at your option) any later version.

This library 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

Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public

License along with this library; if not, write to the Free Software

Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

Sam Lantinga

slouken@libsdl.org

*/

#include "SDL_config.h"

#define WIN32_LEAN_AND_MEAN

#include <windows.h>

#include "SDL_main.h"

#include "SDL_events.h"

#include "SDL_syswm.h"

#include "../../events/SDL_sysevents.h"

#include "../../events/SDL_events_c.h"

#include "../wincommon/SDL_lowvideo.h"

#include "SDL_dibvideo.h"

#include "SDL_vkeys.h"

#ifndef WM_APP

#define WM_APP 0x8000

#endif

#ifdef _WIN32_WCE

#define NO_GETKEYBOARDSTATE

#endif

/* The translation table from a Microsoft VK keysym to a SDL keysym */

static SDLKey VK_keymap[SDLK_LAST];

static SDL_keysym *TranslateKey(WPARAM vkey, UINT scancode, SDL_keysym *keysym, int pressed);

/* Masks for processing the windows KEYDOWN and KEYUP messages */

#define REPEATED_KEYMASK (1<<30)

#define EXTENDED_KEYMASK (1<<24)

/* DJM: If the user setup the window for us, we want to save his window proc,

and give him a chance to handle some messages. */

#ifdef STRICT

#define WNDPROCTYPE WNDPROC

#else

#define WNDPROCTYPE FARPROC

#endif

static WNDPROCTYPE userWindowProc = NULL;

#ifdef _WIN32_WCE

WPARAM rotateKey(WPARAM key,SDL_ScreenOrientation direction)

{

if (direction != SDL_ORIENTATION_LEFT)

return key;

switch (key) {

case 0x26: /* up */

return 0x27;

case 0x27: /* right */

return 0x28;

case 0x28: /* down */

return 0x25;

case 0x25: /* left */

return 0x26;

}

return key;

}

#endif

/* The main Win32 event handler */

LRESULT DIB_HandleMessage(_THIS, HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)

{

extern int posted;

switch (msg) {

case WM_SYSKEYDOWN:

case WM_KEYDOWN: {

SDL_keysym keysym;

#ifdef _WIN32_WCE

// Drop GAPI artefacts

if (wParam == 0x84 || wParam == 0x5B)

return 0;

// Rotate key if necessary

if (this->hidden->orientation != SDL_ORIENTATION_UP)

wParam = rotateKey(wParam, this->hidden->orientation);

#endif

/* Ignore repeated keys */

if ( lParam&REPEATED_KEYMASK ) {

return(0);

}

switch (wParam) {

case VK_CONTROL:

if ( lParam&EXTENDED_KEYMASK )

wParam = VK_RCONTROL;

else

wParam = VK_LCONTROL;

break;

case VK_SHIFT:

/* EXTENDED trick doesn't work here */

{

Uint8 *state = SDL_GetKeyState(NULL);

if (state[SDLK_LSHIFT] == SDL_RELEASED && (GetKeyState(VK_LSHIFT) & 0x8000)) {

wParam = VK_LSHIFT;

} else if (state[SDLK_RSHIFT] == SDL_RELEASED && (GetKeyState(VK_RSHIFT) & 0x8000)) {

wParam = VK_RSHIFT;

} else {

/* Win9x */

int sc = HIWORD(lParam) & 0xFF;

if (sc == 0x2A)

wParam = VK_LSHIFT;

else

if (sc == 0x36)

wParam = VK_RSHIFT;

else

wParam = VK_LSHIFT;

}

}

break;

case VK_MENU:

if ( lParam&EXTENDED_KEYMASK )

wParam = VK_RMENU;

else

wParam = VK_LMENU;

break;

}

#ifdef NO_GETKEYBOARDSTATE

/* this is the workaround for the missing ToAscii() and ToUnicode() in CE (not necessary at KEYUP!) */

if ( SDL_TranslateUNICODE ) {

MSG m;

m.hwnd = hwnd;

m.message = msg;

m.wParam = wParam;

m.lParam = lParam;

m.time = 0;

if ( TranslateMessage(&m) && PeekMessage(&m, hwnd, 0, WM_USER, PM_NOREMOVE) && (m.message == WM_CHAR) ) {

GetMessage(&m, hwnd, 0, WM_USER);

wParam = m.wParam;

}

}

#endif /* NO_GETKEYBOARDSTATE */

posted = SDL_PrivateKeyboard(SDL_PRESSED,

TranslateKey(wParam,HIWORD(lParam),&keysym,1));

}

return(0);

case WM_SYSKEYUP:

case WM_KEYUP: {

SDL_keysym keysym;

#ifdef _WIN32_WCE

// Drop GAPI artifacts

if (wParam == 0x84 || wParam == 0x5B)

return 0;

// Rotate key if necessary

if (this->hidden->orientation != SDL_ORIENTATION_UP)

wParam = rotateKey(wParam, this->hidden->orientation);

#endif

switch (wParam) {

case VK_CONTROL:

if ( lParam&EXTENDED_KEYMASK )

wParam = VK_RCONTROL;

else

wParam = VK_LCONTROL;

break;

case VK_SHIFT:

/* EXTENDED trick doesn't work here */

{

Uint8 *state = SDL_GetKeyState(NULL);

if (state[SDLK_LSHIFT] == SDL_PRESSED && !(GetKeyState(VK_LSHIFT) & 0x8000)) {

wParam = VK_LSHIFT;

} else if (state[SDLK_RSHIFT] == SDL_PRESSED && !(GetKeyState(VK_RSHIFT) & 0x8000)) {

wParam = VK_RSHIFT;

} else {

/* Win9x */

int sc = HIWORD(lParam) & 0xFF;

if (sc == 0x2A)

wParam = VK_LSHIFT;

else

if (sc == 0x36)

wParam = VK_RSHIFT;

else

wParam = VK_LSHIFT;

}

}

break;

case VK_MENU:

if ( lParam&EXTENDED_KEYMASK )

wParam = VK_RMENU;

else

wParam = VK_LMENU;

break;

}

/* Windows only reports keyup for print screen */

if ( wParam == VK_SNAPSHOT && SDL_GetKeyState(NULL)[SDLK_PRINT] == SDL_RELEASED ) {

posted = SDL_PrivateKeyboard(SDL_PRESSED,

TranslateKey(wParam,HIWORD(lParam),&keysym,1));

}

posted = SDL_PrivateKeyboard(SDL_RELEASED,

TranslateKey(wParam,HIWORD(lParam),&keysym,0));

}

return(0);

#if defined(SC_SCREENSAVE) && defined(SC_MONITORPOWER)

case WM_SYSCOMMAND: {

const DWORD val = (DWORD) (wParam & 0xFFF0);

if ((val == SC_SCREENSAVE) || (val == SC_MONITORPOWER)) {

if (!allow_screensaver) {

/* Note that this doesn't stop anything on Vista

if the screensaver has a password. */

return(0);

}

}

}

/* Fall through to default processing */

#endif /* SC_SCREENSAVE && SC_MONITORPOWER */

default: {

/* Only post the event if we're watching for it */

if ( SDL_ProcessEvents[SDL_SYSWMEVENT] == SDL_ENABLE ) {

SDL_SysWMmsg wmmsg;

SDL_VERSION(&wmmsg.version);

wmmsg.hwnd = hwnd;

wmmsg.msg = msg;

wmmsg.wParam = wParam;

wmmsg.lParam = lParam;

posted = SDL_PrivateSysWMEvent(&wmmsg);

/* DJM: If the user isn't watching for private

messages in her SDL event loop, then pass it

along to any win32 specific window proc.

*/

} else if (userWindowProc) {

return CallWindowProc(userWindowProc, hwnd, msg, wParam, lParam);

}

}

break;

}

return(DefWindowProc(hwnd, msg, wParam, lParam));

}

void DIB_PumpEvents(_THIS)

{

MSG msg;

while ( PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE) ) {

if ( GetMessage(&msg, NULL, 0, 0) > 0 ) {

DispatchMessage(&msg);

}

}

}

static HKL hLayoutUS = NULL;

void DIB_InitOSKeymap(_THIS)

{

int i;

#ifndef _WIN32_WCE

char current_layout[KL_NAMELENGTH];

GetKeyboardLayoutName(current_layout);

//printf("Initial Keyboard Layout Name: '%s'\n", current_layout);

hLayoutUS = LoadKeyboardLayout("00000409", KLF_NOTELLSHELL);

if (!hLayoutUS) {

//printf("Failed to load US keyboard layout. Using current.\n");

hLayoutUS = GetKeyboardLayout(0);

}

LoadKeyboardLayout(current_layout, KLF_ACTIVATE);

#else

#if _WIN32_WCE >=420

TCHAR current_layout[KL_NAMELENGTH];

GetKeyboardLayoutName(current_layout);

//printf("Initial Keyboard Layout Name: '%s'\n", current_layout);

hLayoutUS = LoadKeyboardLayout(L"00000409", 0);

if (!hLayoutUS) {

//printf("Failed to load US keyboard layout. Using current.\n");

hLayoutUS = GetKeyboardLayout(0);

}

LoadKeyboardLayout(current_layout, 0);

#endif // _WIN32_WCE >=420

#endif

/* Map the VK keysyms */

for ( i=0; i<SDL_arraysize(VK_keymap); ++i )

VK_keymap[i] = SDLK_UNKNOWN;

VK_keymap[VK_BACK] = SDLK_BACKSPACE;

VK_keymap[VK_TAB] = SDLK_TAB;

VK_keymap[VK_CLEAR] = SDLK_CLEAR;

VK_keymap[VK_RETURN] = SDLK_RETURN;

VK_keymap[VK_PAUSE] = SDLK_PAUSE;

VK_keymap[VK_ESCAPE] = SDLK_ESCAPE;

VK_keymap[VK_SPACE] = SDLK_SPACE;

VK_keymap[VK_APOSTROPHE] = SDLK_QUOTE;

VK_keymap[VK_COMMA] = SDLK_COMMA;

VK_keymap[VK_MINUS] = SDLK_MINUS;

VK_keymap[VK_PERIOD] = SDLK_PERIOD;

VK_keymap[VK_SLASH] = SDLK_SLASH;

VK_keymap[VK_0] = SDLK_0;

VK_keymap[VK_1] = SDLK_1;

VK_keymap[VK_2] = SDLK_2;

VK_keymap[VK_3] = SDLK_3;

VK_keymap[VK_4] = SDLK_4;

VK_keymap[VK_5] = SDLK_5;

VK_keymap[VK_6] = SDLK_6;

VK_keymap[VK_7] = SDLK_7;

VK_keymap[VK_8] = SDLK_8;

VK_keymap[VK_9] = SDLK_9;

VK_keymap[VK_SEMICOLON] = SDLK_SEMICOLON;

VK_keymap[VK_EQUALS] = SDLK_EQUALS;

VK_keymap[VK_LBRACKET] = SDLK_LEFTBRACKET;

VK_keymap[VK_BACKSLASH] = SDLK_BACKSLASH;

VK_keymap[VK_OEM_102] = SDLK_LESS;

VK_keymap[VK_RBRACKET] = SDLK_RIGHTBRACKET;

VK_keymap[VK_GRAVE] = SDLK_BACKQUOTE;

VK_keymap[VK_BACKTICK] = SDLK_BACKQUOTE;

VK_keymap[VK_A] = SDLK_a;

VK_keymap[VK_B] = SDLK_b;

VK_keymap[VK_C] = SDLK_c;

VK_keymap[VK_D] = SDLK_d;

VK_keymap[VK_E] = SDLK_e;

VK_keymap[VK_F] = SDLK_f;

VK_keymap[VK_G] = SDLK_g;

VK_keymap[VK_H] = SDLK_h;

VK_keymap[VK_I] = SDLK_i;

VK_keymap[VK_J] = SDLK_j;

VK_keymap[VK_K] = SDLK_k;

VK_keymap[VK_L] = SDLK_l;

VK_keymap[VK_M] = SDLK_m;

VK_keymap[VK_N] = SDLK_n;

VK_keymap[VK_O] = SDLK_o;

VK_keymap[VK_P] = SDLK_p;

VK_keymap[VK_Q] = SDLK_q;

VK_keymap[VK_R] = SDLK_r;

VK_keymap[VK_S] = SDLK_s;

VK_keymap[VK_T] = SDLK_t;

VK_keymap[VK_U] = SDLK_u;

VK_keymap[VK_V] = SDLK_v;

VK_keymap[VK_W] = SDLK_w;

VK_keymap[VK_X] = SDLK_x;

VK_keymap[VK_Y] = SDLK_y;

VK_keymap[VK_Z] = SDLK_z;

VK_keymap[VK_DELETE] = SDLK_DELETE;

VK_keymap[VK_NUMPAD0] = SDLK_KP0;

VK_keymap[VK_NUMPAD1] = SDLK_KP1;

VK_keymap[VK_NUMPAD2] = SDLK_KP2;

VK_keymap[VK_NUMPAD3] = SDLK_KP3;

VK_keymap[VK_NUMPAD4] = SDLK_KP4;

VK_keymap[VK_NUMPAD5] = SDLK_KP5;

VK_keymap[VK_NUMPAD6] = SDLK_KP6;

VK_keymap[VK_NUMPAD7] = SDLK_KP7;

VK_keymap[VK_NUMPAD8] = SDLK_KP8;

VK_keymap[VK_NUMPAD9] = SDLK_KP9;

VK_keymap[VK_DECIMAL] = SDLK_KP_PERIOD;

VK_keymap[VK_DIVIDE] = SDLK_KP_DIVIDE;

VK_keymap[VK_MULTIPLY] = SDLK_KP_MULTIPLY;

VK_keymap[VK_SUBTRACT] = SDLK_KP_MINUS;

VK_keymap[VK_ADD] = SDLK_KP_PLUS;

VK_keymap[VK_UP] = SDLK_UP;

VK_keymap[VK_DOWN] = SDLK_DOWN;

VK_keymap[VK_RIGHT] = SDLK_RIGHT;

VK_keymap[VK_LEFT] = SDLK_LEFT;

VK_keymap[VK_INSERT] = SDLK_INSERT;

VK_keymap[VK_HOME] = SDLK_HOME;

VK_keymap[VK_END] = SDLK_END;

VK_keymap[VK_PRIOR] = SDLK_PAGEUP;

VK_keymap[VK_NEXT] = SDLK_PAGEDOWN;

VK_keymap[VK_F1] = SDLK_F1;

VK_keymap[VK_F2] = SDLK_F2;

VK_keymap[VK_F3] = SDLK_F3;

VK_keymap[VK_F4] = SDLK_F4;

VK_keymap[VK_F5] = SDLK_F5;

VK_keymap[VK_F6] = SDLK_F6;

VK_keymap[VK_F7] = SDLK_F7;

VK_keymap[VK_F8] = SDLK_F8;

VK_keymap[VK_F9] = SDLK_F9;

VK_keymap[VK_F10] = SDLK_F10;

VK_keymap[VK_F11] = SDLK_F11;

VK_keymap[VK_F12] = SDLK_F12;

VK_keymap[VK_F13] = SDLK_F13;

VK_keymap[VK_F14] = SDLK_F14;

VK_keymap[VK_F15] = SDLK_F15;

VK_keymap[VK_NUMLOCK] = SDLK_NUMLOCK;

VK_keymap[VK_CAPITAL] = SDLK_CAPSLOCK;

VK_keymap[VK_SCROLL] = SDLK_SCROLLOCK;

VK_keymap[VK_RSHIFT] = SDLK_RSHIFT;

VK_keymap[VK_LSHIFT] = SDLK_LSHIFT;

VK_keymap[VK_RCONTROL] = SDLK_RCTRL;

VK_keymap[VK_LCONTROL] = SDLK_LCTRL;

VK_keymap[VK_RMENU] = SDLK_RALT;

VK_keymap[VK_LMENU] = SDLK_LALT;

VK_keymap[VK_RWIN] = SDLK_RSUPER;

VK_keymap[VK_LWIN] = SDLK_LSUPER;

VK_keymap[VK_HELP] = SDLK_HELP;

#ifdef VK_PRINT

VK_keymap[VK_PRINT] = SDLK_PRINT;

#endif

VK_keymap[VK_SNAPSHOT] = SDLK_PRINT;

VK_keymap[VK_CANCEL] = SDLK_BREAK;

VK_keymap[VK_APPS] = SDLK_MENU;

}

#define EXTKEYPAD(keypad) ((scancode & 0x100)?(mvke):(keypad))

static int SDL_MapVirtualKey(int scancode, int vkey)

{

#ifndef _WIN32_WCE

int mvke = MapVirtualKeyEx(scancode & 0xFF, 1, hLayoutUS);

#else

int mvke = MapVirtualKey(scancode & 0xFF, 1);

#endif

switch(vkey) {

/* These are always correct */

case VK_DIVIDE:

case VK_MULTIPLY:

case VK_SUBTRACT:

case VK_ADD:

case VK_LWIN:

case VK_RWIN:

case VK_APPS:

/* These are already handled */

case VK_LCONTROL:

case VK_RCONTROL:

case VK_LSHIFT:

case VK_RSHIFT:

case VK_LMENU:

case VK_RMENU:

case VK_SNAPSHOT:

case VK_PAUSE:

return vkey;

}

switch(mvke) {

/* Distinguish between keypad and extended keys */

case VK_INSERT: return EXTKEYPAD(VK_NUMPAD0);

case VK_DELETE: return EXTKEYPAD(VK_DECIMAL);

case VK_END: return EXTKEYPAD(VK_NUMPAD1);

case VK_DOWN: return EXTKEYPAD(VK_NUMPAD2);

case VK_NEXT: return EXTKEYPAD(VK_NUMPAD3);

case VK_LEFT: return EXTKEYPAD(VK_NUMPAD4);

case VK_CLEAR: return EXTKEYPAD(VK_NUMPAD5);

case VK_RIGHT: return EXTKEYPAD(VK_NUMPAD6);

case VK_HOME: return EXTKEYPAD(VK_NUMPAD7);

case VK_UP: return EXTKEYPAD(VK_NUMPAD8);

case VK_PRIOR: return EXTKEYPAD(VK_NUMPAD9);

}

return mvke?mvke:vkey;

}

static SDL_keysym *TranslateKey(WPARAM vkey, UINT scancode, SDL_keysym *keysym, int pressed)

{

/* Set the keysym information */

keysym->scancode = (unsigned char) scancode;

keysym->mod = KMOD_NONE;

keysym->unicode = 0;

if ( pressed && SDL_TranslateUNICODE ) {

#ifdef NO_GETKEYBOARDSTATE

/* Uh oh, better hope the vkey is close enough.. */

keysym->unicode = vkey;

#else

BYTE keystate[256];

Uint16 wchars[2];

GetKeyboardState(keystate);

if (SDL_ToUnicode((UINT)vkey, scancode, keystate, wchars, sizeof(wchars)/sizeof(wchars[0]), 0) == 1)

{

keysym->unicode = wchars[0];

}

#endif /* NO_GETKEYBOARDSTATE */

}

if ((vkey == VK_RETURN) && (scancode & 0x100)) {

/* No VK_ code for the keypad enter key */

keysym->sym = SDLK_KP_ENTER;

}

else {

keysym->sym = VK_keymap[SDL_MapVirtualKey(scancode, vkey)];

}

#if 0

{

HKL hLayoutCurrent = GetKeyboardLayout(0);

int sc = scancode & 0xFF;

printf("SYM:%d, VK:0x%02X, SC:0x%04X, US:(1:0x%02X, 3:0x%02X), "

"Current:(1:0x%02X, 3:0x%02X)\n",

keysym->sym, vkey, scancode,

MapVirtualKeyEx(sc, 1, hLayoutUS),

MapVirtualKeyEx(sc, 3, hLayoutUS),

MapVirtualKeyEx(sc, 1, hLayoutCurrent),

MapVirtualKeyEx(sc, 3, hLayoutCurrent)

);

}

#endif

return(keysym);

}

int DIB_CreateWindow(_THIS)

{

char *windowid = SDL_getenv("SDL_WINDOWID");

SDL_RegisterApp(NULL, 0, 0);

SDL_windowid = (windowid != NULL);

if ( SDL_windowid ) {

#if defined(_WIN32_WCE) && (_WIN32_WCE < 300)

/* wince 2.1 does not have strtol */

wchar_t *windowid_t = SDL_malloc((SDL_strlen(windowid) + 1) * sizeof(wchar_t));

MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, windowid, -1, windowid_t, SDL_strlen(windowid) + 1);

SDL_Window = (HWND)wcstol(windowid_t, NULL, 0);

SDL_free(windowid_t);

#else

SDL_Window = (HWND)SDL_strtoull(windowid, NULL, 0);

#endif

if ( SDL_Window == NULL ) {

SDL_SetError("Couldn't get user specified window");

return(-1);

}

/* DJM: we want all event's for the user specified

window to be handled by SDL.

*/

userWindowProc = (WNDPROCTYPE)GetWindowLongPtr(SDL_Window, GWLP_WNDPROC);

SetWindowLongPtr(SDL_Window, GWLP_WNDPROC, (LONG_PTR)WinMessage);

} else {

SDL_Window = CreateWindow(SDL_Appname, SDL_Appname,

(WS_OVERLAPPED|WS_CAPTION|WS_SYSMENU|WS_MINIMIZEBOX),

CW_USEDEFAULT, CW_USEDEFAULT, 0, 0, NULL, NULL, SDL_Instance, NULL);

if ( SDL_Window == NULL ) {

SDL_SetError("Couldn't create window");

return(-1);

}

ShowWindow(SDL_Window, SW_HIDE);

}

/* JC 14 Mar 2006

Flush the message loop or this can cause big problems later

Especially if the user decides to use dialog boxes or assert()!

*/

WIN_FlushMessageQueue();

return(0);

}

void DIB_DestroyWindow(_THIS)

{

if ( SDL_windowid ) {

SetWindowLongPtr(SDL_Window, GWLP_WNDPROC, (LONG_PTR)userWindowProc);

} else {

DestroyWindow(SDL_Window);

}

SDL_UnregisterApp();

/* JC 14 Mar 2006

Flush the message loop or this can cause big problems later

Especially if the user decides to use dialog boxes or assert()!

*/

WIN_FlushMessageQueue();

}