sdl_sysevents.c

SDL库 在进行视频显示程序spcaview安装时必须的库文件

/*
    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
    [e-mail]
*/
#include "SDL_config.h"

#define WIN32_LEAN_AND_MEAN
#include <windows.h>

/* 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

#include "SDL_events.h"
#include "SDL_video.h"
#include "SDL_syswm.h"
#include "../SDL_sysvideo.h"
#include "../../events/SDL_sysevents.h"
#include "../../events/SDL_events_c.h"
#include "SDL_lowvideo.h"
#include "SDL_syswm_c.h"
#include "SDL_main.h"
#include "SDL_loadso.h"

#ifdef WMMSG_DEBUG
#include "wmmsg.h"
#endif

#ifdef _WIN32_WCE
#include "../gapi/SDL_gapivideo.h"

#define IsZoomed(HWND) 1
#define NO_GETKEYBOARDSTATE
#if _WIN32_WCE < 420
#define NO_CHANGEDISPLAYSETTINGS
#endif
#endif

/* The window we use for everything... */
#ifdef _WIN32_WCE
LPWSTR SDL_Appname = NULL;
#else
LPSTR SDL_Appname = NULL;
#endif
Uint32 SDL_Appstyle = 0;
HINSTANCE SDL_Instance = NULL;
HWND SDL_Window = NULL;
RECT SDL_bounds = {0, 0, 0, 0};
int SDL_windowX = 0;
int SDL_windowY = 0;
int SDL_resizing = 0;
int mouse_relative = 0;
int posted = 0;
#ifndef NO_CHANGEDISPLAYSETTINGS
DEVMODE SDL_desktop_mode;
DEVMODE SDL_fullscreen_mode;
#endif
WORD *gamma_saved = NULL;


/* Functions called by the message processing function */
LONG (*HandleMessage)(_THIS, HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)=NULL;
void (*WIN_Activate)(_THIS, BOOL active, BOOL iconic);
void (*WIN_RealizePalette)(_THIS);
void (*WIN_PaletteChanged)(_THIS, HWND window);
void (*WIN_WinPAINT)(_THIS, HDC hdc);
extern void DIB_SwapGamma(_THIS);

#ifndef NO_GETKEYBOARDSTATE
/* Variables and support functions for SDL_ToUnicode() */
static int codepage;
static int Is9xME();
static int GetCodePage();
static int WINAPI ToUnicode9xME(UINT vkey, UINT scancode, BYTE *keystate, LPWSTR wchars, int wsize, UINT flags);

ToUnicodeFN SDL_ToUnicode = ToUnicode9xME;
#endif /* !NO_GETKEYBOARDSTATE */


#if defined(_WIN32_WCE)

// dynamically load aygshell dll because we want SDL to work on HPC and be300
HINSTANCE aygshell = NULL;
BOOL (WINAPI *SHFullScreen)(HWND hwndRequester, DWORD dwState) = 0;

#define SHFS_SHOWTASKBAR            0x0001
#define SHFS_HIDETASKBAR            0x0002
#define SHFS_SHOWSIPBUTTON          0x0004
#define SHFS_HIDESIPBUTTON          0x0008
#define SHFS_SHOWSTARTICON          0x0010
#define SHFS_HIDESTARTICON          0x0020

static void LoadAygshell(void)
{
	if( !aygshell )
		 aygshell = SDL_LoadObject("aygshell.dll");
	if( (aygshell != 0) && (SHFullScreen == 0) )
	{
		SHFullScreen = (int (WINAPI *)(struct HWND__ *,unsigned long)) SDL_LoadFunction(aygshell, "SHFullScreen");
	}
}

/* for gapi landscape mode */
static void GapiTransform(SDL_ScreenOrientation rotate, char hires, Sint16 *x, Sint16 *y) {
	Sint16 rotatedX;
	Sint16 rotatedY;

	if (hires) {
		*x = *x * 2;
		*y = *y * 2;
	}

	switch(rotate) {
		case SDL_ORIENTATION_UP:
			{
/* this code needs testing on a real device!
   So it will be enabled later */
/*
#ifdef _WIN32_WCE
#if _WIN32_WCE >= 420
				// test device orientation
				// FIXME: do not check every mouse message
				DEVMODE settings;
				SDL_memset(&settings, 0, sizeof(DEVMODE));
				settings.dmSize = sizeof(DEVMODE);
				settings.dmFields = DM_DISPLAYORIENTATION;
				ChangeDisplaySettingsEx(NULL, &settings, NULL, CDS_TEST, NULL);
				if( settings.dmOrientation == DMDO_90 )
				{
					rotatedX = SDL_VideoSurface->h - *x;
					rotatedY = *y;
					*x = rotatedX;
					*y = rotatedY;
				}
#endif
#endif */
			}
			break;
		case SDL_ORIENTATION_RIGHT:
			if (!SDL_VideoSurface)
				break;
			rotatedX = SDL_VideoSurface->w - *y;
			rotatedY = *x;
			*x = rotatedX;
			*y = rotatedY;
			break;
		case SDL_ORIENTATION_LEFT:
			if (!SDL_VideoSurface)
				break;
			rotatedX = *y;
			rotatedY = SDL_VideoSurface->h - *x;
			*x = rotatedX;
			*y = rotatedY;
			break;
	}
}

#endif

/* JC 14 Mar 2006
   This is used all over the place, in the windib driver and in the dx5 driver
   So we may as well stick it here instead of having multiple copies scattered
   about
*/
void WIN_FlushMessageQueue()
{
	MSG  msg;
	while ( PeekMessage(&msg, NULL, 0, 0, PM_REMOVE) ) {
		if ( msg.message == WM_QUIT ) break;
		TranslateMessage( &msg );
		DispatchMessage( &msg );
	}
}

static void SDL_RestoreGameMode(void)
{
#ifdef _WIN32_WCE
	SDL_VideoDevice *this = current_video;
	if(SDL_strcmp(this->name, "gapi") == 0)
	{
		if( this->hidden->suspended )
		{
			this->hidden->suspended = 0;
		}
	}
#else
	ShowWindow(SDL_Window, SW_RESTORE);
#endif

#ifndef NO_CHANGEDISPLAYSETTINGS
#ifndef _WIN32_WCE
	ChangeDisplaySettings(&SDL_fullscreen_mode, CDS_FULLSCREEN);
#endif
#endif /* NO_CHANGEDISPLAYSETTINGS */
}
static void SDL_RestoreDesktopMode(void)
{

#ifdef _WIN32_WCE
	SDL_VideoDevice *this = current_video;
	if(SDL_strcmp(this->name, "gapi") == 0)
	{
		if( !this->hidden->suspended )
		{
			this->hidden->suspended = 1;
		}
	}
#else
	/* WinCE does not have a taskbar, so minimizing is not convenient */
	ShowWindow(SDL_Window, SW_MINIMIZE);
#endif

#ifndef NO_CHANGEDISPLAYSETTINGS
#ifndef _WIN32_WCE
	ChangeDisplaySettings(NULL, 0);
#endif
#endif /* NO_CHANGEDISPLAYSETTINGS */
}

#ifdef WM_MOUSELEAVE
/* 
   Special code to handle mouse leave events - this sucks...
   http://support.microsoft.com/support/kb/articles/q183/1/07.asp

   TrackMouseEvent() is only available on Win98 and WinNT.
   _TrackMouseEvent() is available on Win95, but isn't yet in the mingw32
   development environment, and only works on systems that have had IE 3.0
   or newer installed on them (which is not the case with the base Win95).
   Therefore, we implement our own version of _TrackMouseEvent() which
   uses our own implementation if TrackMouseEvent() is not available.
*/
static BOOL (WINAPI *_TrackMouseEvent)(TRACKMOUSEEVENT *ptme) = NULL;

static VOID CALLBACK
TrackMouseTimerProc(HWND hWnd, UINT uMsg, UINT idEvent, DWORD dwTime)
{
	RECT rect;
	POINT pt;

	GetClientRect(hWnd, &rect);
	MapWindowPoints(hWnd, NULL, (LPPOINT)&rect, 2);
	GetCursorPos(&pt);
	if ( !PtInRect(&rect, pt) || (WindowFromPoint(pt) != hWnd) ) {
		if ( !KillTimer(hWnd, idEvent) ) {
			/* Error killing the timer! */
		}
		PostMessage(hWnd, WM_MOUSELEAVE, 0, 0);
	}
}
static BOOL WINAPI WIN_TrackMouseEvent(TRACKMOUSEEVENT *ptme)
{
	if ( ptme->dwFlags == TME_LEAVE ) {
		return SetTimer(ptme->hwndTrack, ptme->dwFlags, 100,
		                (TIMERPROC)TrackMouseTimerProc) != 0;
	}
	return FALSE;
}
#endif /* WM_MOUSELEAVE */

/* Function to retrieve the current keyboard modifiers */
static void WIN_GetKeyboardState(void)
{
#ifndef NO_GETKEYBOARDSTATE
	SDLMod state;
	BYTE keyboard[256];
	Uint8 *kstate = SDL_GetKeyState(NULL);

	state = KMOD_NONE;
	if ( GetKeyboardState(keyboard) ) {
		if ( keyboard[VK_LSHIFT] & 0x80) {
			state |= KMOD_LSHIFT;
			kstate[SDLK_LSHIFT] = SDL_PRESSED;
		}
		if ( keyboard[VK_RSHIFT] & 0x80) {
			state |= KMOD_RSHIFT;
			kstate[SDLK_RSHIFT] = SDL_PRESSED;
		}
		if ( keyboard[VK_LCONTROL] & 0x80) {
			state |= KMOD_LCTRL;
			kstate[SDLK_LCTRL] = SDL_PRESSED;
		}
		if ( keyboard[VK_RCONTROL] & 0x80) {
			state |= KMOD_RCTRL;
			kstate[SDLK_RCTRL] = SDL_PRESSED;
		}
		if ( keyboard[VK_LMENU] & 0x80) {
			state |= KMOD_LALT;
			kstate[SDLK_LALT] = SDL_PRESSED;
		}
		if ( keyboard[VK_RMENU] & 0x80) {
			state |= KMOD_RALT;
			kstate[SDLK_RALT] = SDL_PRESSED;
		}
		if ( keyboard[VK_NUMLOCK] & 0x01) {
			state |= KMOD_NUM;
			kstate[SDLK_NUMLOCK] = SDL_PRESSED;
		}
		if ( keyboard[VK_CAPITAL] & 0x01) {
			state |= KMOD_CAPS;
			kstate[SDLK_CAPSLOCK] = SDL_PRESSED;
		}
	}
	SDL_SetModState(state);
#endif /* !NO_GETKEYBOARDSTATE */
}

/* The main Win32 event handler
DJM: This is no longer static as (DX5/DIB)_CreateWindow needs it
*/
LRESULT CALLBACK WinMessage(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
	SDL_VideoDevice *this = current_video;
	static int mouse_pressed = 0;
	static int in_window = 0;
#ifdef WMMSG_DEBUG
	fprintf(stderr, "Received windows message:  ");
	if ( msg > MAX_WMMSG ) {
		fprintf(stderr, "%d", msg);
	} else {
		fprintf(stderr, "%s", wmtab[msg]);
	}
	fprintf(stderr, " -- 0x%X, 0x%X\n", wParam, lParam);
#endif
	switch (msg) {

		case WM_ACTIVATE: {
			SDL_VideoDevice *this = current_video;
			BOOL active, minimized;
			Uint8 appstate;

			minimized = HIWORD(wParam);
			active = (LOWORD(wParam) != WA_INACTIVE) && !minimized;
			if ( active ) {
				/* Gain the following states */
				appstate = SDL_APPACTIVE|SDL_APPINPUTFOCUS;
				if ( this->input_grab != SDL_GRAB_OFF ) {
					WIN_GrabInput(this, SDL_GRAB_ON);
				}
				if ( !(SDL_GetAppState()&SDL_APPINPUTFOCUS) ) {
					if ( ! DDRAW_FULLSCREEN() ) {
						DIB_SwapGamma(this);
					}
					if ( WINDIB_FULLSCREEN() ) {
						SDL_RestoreGameMode();
					}
				}
#if defined(_WIN32_WCE)
				if ( WINDIB_FULLSCREEN() ) {
					LoadAygshell();
					if( SHFullScreen )
						SHFullScreen(SDL_Window, SHFS_HIDESTARTICON|SHFS_HIDETASKBAR|SHFS_HIDESIPBUTTON);
					else
						ShowWindow(FindWindow(TEXT("HHTaskBar"),NULL),SW_HIDE);
				}
#endif
				posted = SDL_PrivateAppActive(1, appstate);
				WIN_GetKeyboardState();
			} else {
				/* Lose the following states */
				appstate = SDL_APPINPUTFOCUS;
				if ( minimized ) {
					appstate |= SDL_APPACTIVE;
				}
				if ( this->input_grab != SDL_GRAB_OFF ) {
					WIN_GrabInput(this, SDL_GRAB_OFF);
				}
				if ( SDL_GetAppState() & SDL_APPINPUTFOCUS ) {
					if ( ! DDRAW_FULLSCREEN() ) {
						DIB_SwapGamma(this);
					}
					if ( WINDIB_FULLSCREEN() ) {
						SDL_RestoreDesktopMode();
#if defined(_WIN32_WCE)
						LoadAygshell();
						if( SHFullScreen ) 
							SHFullScreen(SDL_Window, SHFS_SHOWSTARTICON|SHFS_SHOWTASKBAR|SHFS_SHOWSIPBUTTON);
						else
							ShowWindow(FindWindow(TEXT("HHTaskBar"),NULL),SW_SHOW);
#endif
					}
				}
				posted = SDL_PrivateAppActive(0, appstate);
			}
			WIN_Activate(this, active, minimized);
			return(0);
		}
		break;

		case WM_MOUSEMOVE: {
			
			/* Mouse is handled by DirectInput when fullscreen */
			if ( SDL_VideoSurface && ! DINPUT_FULLSCREEN() ) {
				Sint16 x, y;

				/* mouse has entered the window */
				if ( ! in_window ) {
#ifdef WM_MOUSELEAVE
					TRACKMOUSEEVENT tme;

					tme.cbSize = sizeof(tme);
					tme.dwFlags = TME_LEAVE;
					tme.hwndTrack = SDL_Window;
					_TrackMouseEvent(&tme);
#endif /* WM_MOUSELEAVE */
					in_window = TRUE;

					posted = SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS);
				}

				/* mouse has moved within the window */
				x = LOWORD(lParam);
				y = HIWORD(lParam);
				if ( mouse_relative ) {
					POINT center;
					center.x = (SDL_VideoSurface->w/2);
					center.y = (SDL_VideoSurface->h/2);
					x -= (Sint16)center.x;
					y -= (Sint16)center.y;
					if ( x || y ) {
						ClientToScreen(SDL_Window, &center);
						SetCursorPos(center.x, center.y);
						posted = SDL_PrivateMouseMotion(0, 1, x, y);
					}
				} else {
#ifdef _WIN32_WCE
					if (SDL_VideoSurface)
						GapiTransform(this->hidden->userOrientation, this->hidden->hiresFix, &x, &y);
#endif
					posted = SDL_PrivateMouseMotion(0, 0, x, y);
				}
			}
		}
		return(0);

#ifdef WM_MOUSELEAVE
		case WM_MOUSELEAVE: {

			/* Mouse is handled by DirectInput when fullscreen */
			if ( SDL_VideoSurface && ! DINPUT_FULLSCREEN() ) {