SDL_syswm.c
资源名称:NETVIDEO.rar [点击查看]
上传用户:sun1608
上传日期:2007-02-02
资源大小:6116k
文件大小:8k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*
- SDL - Simple DirectMedia Layer
- Copyright (C) 1997, 1998, 1999 Sam Lantinga
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 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
- Library General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- Sam Lantinga
- slouken@libsdl.org
- */
- #ifdef SAVE_RCSID
- static char rcsid =
- "@(#) $Id: SDL_syswm.c,v 1.4 2002/04/22 21:38:05 wmay Exp $"
- #endif
- #include <stdio.h>
- #include <malloc.h>
- #include <windows.h>
- #include "SDL_version.h"
- #include "SDL_error.h"
- #include "SDL_video.h"
- #include "SDL_syswm.h"
- #include "SDL_syswm_c.h"
- #include "SDL_pixels_c.h"
- #ifdef _WIN32_WCE
- #define DISABLE_ICON_SUPPORT
- #endif
- /* RJR: March 28, 2000
- we need "SDL_cursor_c.h" for mods to WIN_GrabInput */
- #include "SDL_cursor_c.h"
- /* The screen icon -- needs to be freed on SDL_VideoQuit() */
- HICON screen_icn = NULL;
- /* Win32 icon mask semantics are different from those of SDL:
- SDL applies the mask to the icon and copies result to desktop.
- Win32 applies the mask to the desktop and XORs the icon on.
- This means that the SDL mask needs to be applied to the icon and
- then inverted and passed to Win32.
- */
- void WIN_SetWMIcon(_THIS, SDL_Surface *icon, Uint8 *mask)
- {
- #ifdef DISABLE_ICON_SUPPORT
- return;
- #else
- SDL_Palette *pal_256;
- SDL_Surface *icon_256;
- Uint8 *pdata, *pwin32;
- Uint8 *mdata, *mwin32, m = 0;
- int icon_len;
- int icon_plen;
- int icon_mlen;
- int icon_pitch;
- int mask_pitch;
- SDL_Rect bounds;
- int i, skip;
- int row, col;
- struct /* quasi-BMP format */ Win32Icon {
- Uint32 biSize;
- Sint32 biWidth;
- Sint32 biHeight;
- Uint16 biPlanes;
- Uint16 biBitCount;
- Uint32 biCompression;
- Uint32 biSizeImage;
- Sint32 biXPelsPerMeter;
- Sint32 biYPelsPerMeter;
- Uint32 biClrUsed;
- Uint32 biClrImportant;
- struct /* RGBQUAD -- note it's BGR ordered */ {
- Uint8 rgbBlue;
- Uint8 rgbGreen;
- Uint8 rgbRed;
- Uint8 rgbReserved;
- } biColors[256];
- /* Pixels:
- Uint8 pixels[]
- */
- /* Mask:
- Uint8 mask[]
- */
- } *icon_win32;
- /* Allocate the win32 bmp icon and set everything to zero */
- icon_pitch = ((icon->w+3)&~3);
- mask_pitch = ((icon->w+7)/8);
- icon_plen = icon->h*icon_pitch;
- icon_mlen = icon->h*mask_pitch;
- icon_len = sizeof(*icon_win32)+icon_plen+icon_mlen;
- icon_win32 = (struct Win32Icon *)alloca(icon_len);
- if ( icon_win32 == NULL ) {
- return;
- }
- memset(icon_win32, 0, icon_len);
- /* Set the basic BMP parameters */
- icon_win32->biSize = sizeof(*icon_win32)-sizeof(icon_win32->biColors);
- icon_win32->biWidth = icon->w;
- icon_win32->biHeight = icon->h*2;
- icon_win32->biPlanes = 1;
- icon_win32->biBitCount = 8;
- icon_win32->biSizeImage = icon_plen+icon_mlen;
- /* Allocate a standard 256 color icon surface */
- icon_256 = SDL_CreateRGBSurface(SDL_SWSURFACE, icon->w, icon->h,
- icon_win32->biBitCount, 0, 0, 0, 0);
- if ( icon_256 == NULL ) {
- return;
- }
- pal_256 = icon_256->format->palette;
- if (icon->format->palette &&
- (icon->format->BitsPerPixel == icon_256->format->BitsPerPixel)){
- Uint8 black;
- memcpy(pal_256->colors, icon->format->palette->colors,
- pal_256->ncolors*sizeof(SDL_Color));
- /* Make sure that 0 is black! */
- black = SDL_FindColor(pal_256, 0x00, 0x00, 0x00);
- pal_256->colors[black] = pal_256->colors[0];
- pal_256->colors[0].r = 0x00;
- pal_256->colors[0].g = 0x00;
- pal_256->colors[0].b = 0x00;
- } else {
- SDL_DitherColors(pal_256->colors,
- icon_256->format->BitsPerPixel);
- }
- /* Now copy color data to the icon BMP */
- for ( i=0; i<(1<<icon_win32->biBitCount); ++i ) {
- icon_win32->biColors[i].rgbRed = pal_256->colors[i].r;
- icon_win32->biColors[i].rgbGreen = pal_256->colors[i].g;
- icon_win32->biColors[i].rgbBlue = pal_256->colors[i].b;
- }
- /* Convert icon to a standard surface format. This may not always
- be necessary, as Windows supports a variety of BMP formats, but
- it greatly simplifies our code.
- */
- bounds.x = 0;
- bounds.y = 0;
- bounds.w = icon->w;
- bounds.h = icon->h;
- if ( SDL_LowerBlit(icon, &bounds, icon_256, &bounds) < 0 ) {
- SDL_FreeSurface(icon_256);
- return;
- }
- /* Copy pixels upside-down to icon BMP, masked with the icon mask */
- if ( SDL_MUSTLOCK(icon_256) || (icon_256->pitch != icon_pitch) ) {
- SDL_FreeSurface(icon_256);
- SDL_SetError("Warning: Unexpected icon_256 characteristics");
- return;
- }
- pdata = (Uint8 *)icon_256->pixels;
- mdata = mask;
- pwin32 = (Uint8 *)icon_win32+sizeof(*icon_win32)+icon_plen-icon_pitch;
- skip = icon_pitch - icon->w;
- for ( row=0; row<icon->h; ++row ) {
- for ( col=0; col<icon->w; ++col ) {
- if ( (col%8) == 0 ) {
- m = *mdata++;
- }
- if ( (m&0x80) != 0x00 ) {
- *pwin32 = *pdata;
- }
- m <<= 1;
- ++pdata;
- ++pwin32;
- }
- pdata += skip;
- pwin32 += skip;
- pwin32 -= 2*icon_pitch;
- }
- SDL_FreeSurface(icon_256);
- /* Copy mask inverted and upside-down to icon BMP */
- mdata = mask;
- mwin32 = (Uint8 *)icon_win32
- +sizeof(*icon_win32)+icon_plen+icon_mlen-mask_pitch;
- for ( row=0; row<icon->h; ++row ) {
- for ( col=0; col<mask_pitch; ++col ) {
- *mwin32++ = ~*mdata++;
- }
- mwin32 -= 2*mask_pitch;
- }
- /* Finally, create the icon handle and set the window icon */
- screen_icn = CreateIconFromResourceEx((Uint8 *)icon_win32, icon_len,
- TRUE, 0x00030000, icon->w, icon->h, LR_DEFAULTCOLOR);
- if ( screen_icn == NULL ) {
- SDL_SetError("Couldn't create Win32 icon handle");
- } else {
- SetClassLong(SDL_Window, GCL_HICON, (LONG)screen_icn);
- }
- #endif /* DISABLE_ICON_SUPPORT */
- }
- void WIN_SetWMCaption(_THIS, const char *title, const char *icon)
- {
- #ifdef _WIN32_WCE
- /* WinCE uses the UNICODE version */
- int nLen = strlen(title)+1;
- LPWSTR lpszW = alloca(nLen*2);
- MultiByteToWideChar(CP_ACP, 0, title, -1, lpszW, nLen);
- SetWindowText(SDL_Window, lpszW);
- #else
- SetWindowText(SDL_Window, title);
- #endif
- }
- int WIN_IconifyWindow(_THIS)
- {
- ShowWindow(SDL_Window, SW_MINIMIZE);
- return(1);
- }
- SDL_GrabMode WIN_GrabInput(_THIS, SDL_GrabMode mode)
- {
- if ( mode == SDL_GRAB_OFF ) {
- ClipCursor(NULL);
- if ( !(SDL_cursorstate & CURSOR_VISIBLE) ) {
- /* RJR: March 28, 2000
- must be leaving relative mode, move mouse from
- center of window to where it belongs ... */
- POINT pt;
- int x, y;
- SDL_GetMouseState(&x,&y);
- pt.x = x;
- pt.y = y;
- ClientToScreen(SDL_Window, &pt);
- SetCursorPos(pt.x,pt.y);
- }
- } else {
- ClipCursor(&SDL_bounds);
- if ( !(SDL_cursorstate & CURSOR_VISIBLE) ) {
- /* RJR: March 28, 2000
- must be entering relative mode, get ready by
- moving mouse to center of window ... */
- POINT pt;
- pt.x = (SDL_VideoSurface->w/2);
- pt.y = (SDL_VideoSurface->h/2);
- ClientToScreen(SDL_Window, &pt);
- SetCursorPos(pt.x, pt.y);
- }
- }
- return(mode);
- }
- /* If 'info' is the right version, this function fills it and returns 1.
- Otherwise, in case of a version mismatch, it returns -1.
- */
- int WIN_GetWMInfo(_THIS, SDL_SysWMinfo *info)
- {
- if ( info->version.major <= SDL_MAJOR_VERSION ) {
- info->window = SDL_Window;
- return(1);
- } else {
- SDL_SetError("Application not compiled with SDL %d.%dn",
- SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
- return(-1);
- }
- }