/*

    SDL - Simple DirectMedia Layer

    Copyright (C) 1997-2006 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"

#include "SDL_win32video.h"

#include "SDL_syswm.h"

#include "SDL_vkeys.h"

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

/*#define WMMSG_DEBUG*/

#ifdef WMMSG_DEBUG

#include <stdio.h>

#include "wmmsg.h"

#endif

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

#define REPEATED_KEYMASK	(1<<30)

#define EXTENDED_KEYMASK	(1<<24)

/* Make sure XBUTTON stuff is defined that isn't in older Platform SDKs... */

#ifndef WM_XBUTTONDOWN

#define WM_XBUTTONDOWN 0x020B

#endif

#ifndef WM_XBUTTONUP

#define WM_XBUTTONUP 0x020C

#endif

#ifndef GET_XBUTTON_WPARAM

#define GET_XBUTTON_WPARAM(w) (HIWORD(w))

#endif

static SDLKey

TranslateKey(WPARAM vkey)

{

    SDLKey key;

    /* FIXME: Assign vkey directly to key if in ASCII range */

    switch (vkey) {

    case VK_BACK:

        key = SDLK_BACKSPACE;

        break;

    case VK_TAB:

        key = SDLK_TAB;

        break;

    case VK_CLEAR:

        key = SDLK_CLEAR;

        break;

    case VK_RETURN:

        key = SDLK_RETURN;

        break;

    case VK_PAUSE:

        key = SDLK_PAUSE;

        break;

    case VK_ESCAPE:

        key = SDLK_ESCAPE;

        break;

    case VK_SPACE:

        key = SDLK_SPACE;

        break;

    case VK_APOSTROPHE:

        key = SDLK_QUOTE;

        break;

    case VK_COMMA:

        key = SDLK_COMMA;

        break;

    case VK_MINUS:

        key = SDLK_MINUS;

        break;

    case VK_PERIOD:

        key = SDLK_PERIOD;

        break;

    case VK_SLASH:

        key = SDLK_SLASH;

        break;

    case VK_0:

        key = SDLK_0;

        break;

    case VK_1:

        key = SDLK_1;

        break;

    case VK_2:

        key = SDLK_2;

        break;

    case VK_3:

        key = SDLK_3;

        break;

    case VK_4:

        key = SDLK_4;

        break;

    case VK_5:

        key = SDLK_5;

        break;

    case VK_6:

        key = SDLK_6;

        break;

    case VK_7:

        key = SDLK_7;

        break;

    case VK_8:

        key = SDLK_8;

        break;

    case VK_9:

        key = SDLK_9;

        break;

    case VK_SEMICOLON:

        key = SDLK_SEMICOLON;

        break;

    case VK_EQUALS:

        key = SDLK_EQUALS;

        break;

    case VK_LBRACKET:

        key = SDLK_LEFTBRACKET;

        break;

    case VK_BACKSLASH:

        key = SDLK_BACKSLASH;

        break;

    case VK_OEM_102:

        key = SDLK_LESS;

        break;

    case VK_RBRACKET:

        key = SDLK_RIGHTBRACKET;

        break;

    case VK_GRAVE:

        key = SDLK_BACKQUOTE;

        break;

    case VK_BACKTICK:

        key = SDLK_BACKQUOTE;

        break;

    case VK_A:

        key = SDLK_a;

        break;

    case VK_B:

        key = SDLK_b;

        break;

    case VK_C:

        key = SDLK_c;

        break;

    case VK_D:

        key = SDLK_d;

        break;

    case VK_E:

        key = SDLK_e;

        break;

    case VK_F:

        key = SDLK_f;

        break;

    case VK_G:

        key = SDLK_g;

        break;

    case VK_H:

        key = SDLK_h;

        break;

    case VK_I:

        key = SDLK_i;

        break;

    case VK_J:

        key = SDLK_j;

        break;

    case VK_K:

        key = SDLK_k;

        break;

    case VK_L:

        key = SDLK_l;

        break;

    case VK_M:

        key = SDLK_m;

        break;

    case VK_N:

        key = SDLK_n;

        break;

    case VK_O:

        key = SDLK_o;

        break;

    case VK_P:

        key = SDLK_p;

        break;

    case VK_Q:

        key = SDLK_q;

        break;

    case VK_R:

        key = SDLK_r;

        break;

    case VK_S:

        key = SDLK_s;

        break;

    case VK_T:

        key = SDLK_t;

        break;

    case VK_U:

        key = SDLK_u;

        break;

    case VK_V:

        key = SDLK_v;

        break;

    case VK_W:

        key = SDLK_w;

        break;

    case VK_X:

        key = SDLK_x;

        break;

    case VK_Y:

        key = SDLK_y;

        break;

    case VK_Z:

        key = SDLK_z;

        break;

    case VK_DELETE:

        key = SDLK_DELETE;

        break;

    case VK_NUMPAD0:

        key = SDLK_KP0;

        break;

    case VK_NUMPAD1:

        key = SDLK_KP1;

        break;

    case VK_NUMPAD2:

        key = SDLK_KP2;

        break;

    case VK_NUMPAD3:

        key = SDLK_KP3;

        break;

    case VK_NUMPAD4:

        key = SDLK_KP4;

        break;

    case VK_NUMPAD5:

        key = SDLK_KP5;

        break;

    case VK_NUMPAD6:

        key = SDLK_KP6;

        break;

    case VK_NUMPAD7:

        key = SDLK_KP7;

        break;

    case VK_NUMPAD8:

        key = SDLK_KP8;

        break;

    case VK_NUMPAD9:

        key = SDLK_KP9;

        break;

    case VK_DECIMAL:

        key = SDLK_KP_PERIOD;

        break;

    case VK_DIVIDE:

        key = SDLK_KP_DIVIDE;

        break;

    case VK_MULTIPLY:

        key = SDLK_KP_MULTIPLY;

        break;

    case VK_SUBTRACT:

        key = SDLK_KP_MINUS;

        break;

    case VK_ADD:

        key = SDLK_KP_PLUS;

        break;

    case VK_UP:

        key = SDLK_UP;

        break;

    case VK_DOWN:

        key = SDLK_DOWN;

        break;

    case VK_RIGHT:

        key = SDLK_RIGHT;

        break;

    case VK_LEFT:

        key = SDLK_LEFT;

        break;

    case VK_INSERT:

        key = SDLK_INSERT;

        break;

    case VK_HOME:

        key = SDLK_HOME;

        break;

    case VK_END:

        key = SDLK_END;

        break;

    case VK_PRIOR:

        key = SDLK_PAGEUP;

        break;

    case VK_NEXT:

        key = SDLK_PAGEDOWN;

        break;

    case VK_F1:

        key = SDLK_F1;

        break;

    case VK_F2:

        key = SDLK_F2;

        break;

    case VK_F3:

        key = SDLK_F3;

        break;

    case VK_F4:

        key = SDLK_F4;

        break;

    case VK_F5:

        key = SDLK_F5;

        break;

    case VK_F6:

        key = SDLK_F6;

        break;

    case VK_F7:

        key = SDLK_F7;

        break;

    case VK_F8:

        key = SDLK_F8;

        break;

    case VK_F9:

        key = SDLK_F9;

        break;

    case VK_F10:

        key = SDLK_F10;

        break;

    case VK_F11:

        key = SDLK_F11;

        break;

    case VK_F12:

        key = SDLK_F12;

        break;

    case VK_F13:

        key = SDLK_F13;

        break;

    case VK_F14:

        key = SDLK_F14;

        break;

    case VK_F15:

        key = SDLK_F15;

        break;

    case VK_NUMLOCK:

        key = SDLK_NUMLOCK;

        break;

    case VK_CAPITAL:

        key = SDLK_CAPSLOCK;

        break;

    case VK_SCROLL:

        key = SDLK_SCROLLOCK;

        break;

    case VK_RSHIFT:

        key = SDLK_RSHIFT;

        break;

    case VK_LSHIFT:

        key = SDLK_LSHIFT;

        break;

    case VK_RCONTROL:

        key = SDLK_RCTRL;

        break;

    case VK_LCONTROL:

        key = SDLK_LCTRL;

        break;

    case VK_RMENU:

        key = SDLK_RALT;

        break;

    case VK_LMENU:

        key = SDLK_LALT;

        break;

    case VK_RWIN:

        key = SDLK_RSUPER;

        break;

    case VK_LWIN:

        key = SDLK_LSUPER;

        break;

    case VK_HELP:

        key = SDLK_HELP;

        break;

    case VK_PRINT:

        key = SDLK_PRINT;

        break;

    case VK_SNAPSHOT:

        key = SDLK_PRINT;

        break;

    case VK_CANCEL:

        key = SDLK_BREAK;

        break;

    case VK_APPS:

        key = SDLK_MENU;

        break;

    default:

        key = SDLK_UNKNOWN;

        break;

    }

    return key;

}

LRESULT CALLBACK

WIN_WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)

{

    SDL_WindowData *data;

    /* Send a SDL_SYSWMEVENT if the application wants them */

    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;

        SDL_SendSysWMEvent(&wmmsg);

    }

    /* Get the window data for the window */

    data = (SDL_WindowData *) GetProp(hwnd, TEXT("SDL_WindowData"));

    if (!data) {

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

    }

#ifdef WMMSG_DEBUG

    {

        FILE *log = fopen("wmmsg.txt", "a");

        fprintf(log, "Received windows message: %p ", hwnd);

        if (msg > MAX_WMMSG) {

            fprintf(log, "%d", msg);

        } else {

            fprintf(log, "%s", wmtab[msg]);

        }

        fprintf(log, " -- 0x%X, 0x%X\n", wParam, lParam);

        fclose(log);

    }

#endif

    switch (msg) {

    case WM_SHOWWINDOW:

        {

            if (wParam) {

                SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_SHOWN, 0,

                                    0);

            } else {

                SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_HIDDEN, 0,

                                    0);

            }

        }

        break;

    case WM_ACTIVATE:

        {

            int index;

            SDL_Keyboard *keyboard;

            BOOL minimized;

            minimized = HIWORD(wParam);

            index = data->videodata->keyboard;

            keyboard = SDL_GetKeyboard(index);

            if (!minimized && (LOWORD(wParam) != WA_INACTIVE)) {

                SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_SHOWN,

                                    0, 0);

                SDL_SendWindowEvent(data->windowID,

                                    SDL_WINDOWEVENT_RESTORED, 0, 0);

                if (IsZoomed(hwnd)) {

                    SDL_SendWindowEvent(data->windowID,

                                        SDL_WINDOWEVENT_MAXIMIZED, 0, 0);

                }

                if (keyboard && keyboard->focus != data->windowID) {

                    SDL_SetKeyboardFocus(index, data->windowID);

                }

                /* FIXME: Update keyboard state */

            } else {

                if (keyboard && keyboard->focus == data->windowID) {

                    SDL_SetKeyboardFocus(index, 0);

                }

                if (minimized) {

                    SDL_SendWindowEvent(data->windowID,

                                        SDL_WINDOWEVENT_MINIMIZED, 0, 0);

                }

            }

            return (0);

        }

        break;

    case WM_MOUSEMOVE:

        {

            int index;

            SDL_Mouse *mouse;

            int x, y;

            index = data->videodata->mouse;

            mouse = SDL_GetMouse(index);

            if (mouse->focus != data->windowID) {

                TRACKMOUSEEVENT tme;

                tme.cbSize = sizeof(tme);

                tme.dwFlags = TME_LEAVE;

                tme.hwndTrack = hwnd;

                TrackMouseEvent(&tme);

                SDL_SetMouseFocus(index, data->windowID);

            }

            /* mouse has moved within the window */

            x = LOWORD(lParam);

            y = HIWORD(lParam);

            if (mouse->relative_mode) {

                int w, h;

                POINT center;

                SDL_GetWindowSize(data->windowID, &w, &h);

                center.x = (w / 2);

                center.y = (h / 2);

                x -= center.x;

                y -= center.y;

                if (x || y) {

                    ClientToScreen(hwnd, &center);

                    SetCursorPos(center.x, center.y);

                    SDL_SendMouseMotion(index, 1, x, y);

                }

            } else {

                SDL_SendMouseMotion(index, 0, x, y);

            }

        }

        return (0);