graphics/dispdib.c

   1 /*
   2  * DISPDIB.dll
   3  *
   4  * Copyright 1998 Ove Kåven (with some help from Marcus Meissner)
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <string.h>
  22 #include "windef.h"
  23 #include "wingdi.h"
  24 #include "wine/wingdi16.h"
  25 #include "dispdib.h"
  26 #include "wine/debug.h"
  27
  28 WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
  29
  30 #if 0
  31
  32 static int dispdib_multi = 0;
  33
  34 static WORD DISPDIB_Begin(WORD wFlags)
  35 {
  36     unsigned Xres,Yres,Depth;
  37
  38     switch(wFlags&DISPLAYDIB_MODE) {
  39         case DISPLAYDIB_MODE_DEFAULT:
  40             /* FIXME: is this supposed to autodetect? */
  41         case DISPLAYDIB_MODE_320x200x8:
  42             Xres=320; Yres=200; Depth=8; break;
  43         case DISPLAYDIB_MODE_320x240x8:
  44             Xres=320; Yres=240; Depth=8; break;
  45         default:
  46             return DISPLAYDIB_NOTSUPPORTED;
  47     }
  48     /* more or less dummy calls to Death/Resurrection, for completeness */
  49     /* FIXME: what arguments should they get? */
  50     Death16(0);
  51     if (VGA_SetMode(Xres,Yres,Depth)) {
  52          Resurrection16(0,0,0,0,0,0,0);
  53          return DISPLAYDIB_NOTSUPPORTED;
  54     }
  55     return DISPLAYDIB_NOERROR;
  56 }
  57
  58 static void DISPDIB_End(void)
  59 {
  60     Resurrection16(0,0,0,0,0,0,0); /* FIXME: arguments */
  61     VGA_Exit();
  62 }
  63
  64 static void DISPDIB_Palette(LPBITMAPINFO lpbi)
  65 {
  66     VGA_SetQuadPalette(lpbi->bmiColors,0,256);
  67 }
  68
  69 static void DISPDIB_Show(LPBITMAPINFOHEADER lpbi,LPSTR lpBits,WORD uFlags)
  70 {
  71     int Xofs,Yofs,Width=lpbi->biWidth,Height=lpbi->biHeight,Delta;
  72     int Pitch = (Width + 3) & ~3;
  73     unsigned int sPitch,sWidth,sHeight;
  74     LPSTR surf = DOSMEM_MapDosToLinear(0xa0000);
  75
  76     if (VGA_GetMode(&sHeight,&sWidth,NULL)) return;
  77     sPitch=320;
  78
  79     Delta=(Height<0)*2-1;
  80     Height*=-Delta; Pitch*=Delta;
  81
  82     if (uFlags&DISPLAYDIB_NOCENTER) {
  83         Xofs=0; Yofs=0;
  84     } else {
  85         Xofs=(sWidth-Width)/2;
  86         Yofs=(sHeight-Height)/2;
  87     }
  88     surf += (Yofs*sPitch)+Xofs;
  89     if (Pitch<0) lpBits-=Pitch*(Height-1);
  90     for (; Height; Height--,lpBits+=Pitch,surf+=sPitch) {
  91         memcpy(surf,lpBits,Width);
  92     }
  93
  94     VGA_Poll(0);
  95 }
  96 #endif
  97
  98
  99 /*********************************************************************
 100  *      DisplayDib      (DISPDIB.1)
 101  *
 102  *  Disables GDI and takes over the VGA screen to show DIBs in full screen.
 103  *
 104  * FLAGS
 105  *
 106  *  DISPLAYDIB_NOPALETTE: don't change palette
 107  *  DISPLAYDIB_NOCENTER: don't center bitmap
 108  *  DISPLAYDIB_NOWAIT: don't wait (for keypress) before returning
 109  *  DISPLAYDIB_BEGIN: start of multiple calls (does not restore the screen)
 110  *  DISPLAYDIB_END: end of multiple calls (restores the screen)
 111  *  DISPLAYDIB_MODE_DEFAULT: default display mode
 112  *  DISPLAYDIB_MODE_320x200x8: Standard VGA 320x200 256 colors
 113  *  DISPLAYDIB_MODE_320x240x8: Tweaked VGA 320x240 256 colors
 114  *
 115  * RETURNS
 116  *
 117  *  DISPLAYDIB_NOERROR: success
 118  *  DISPLAYDIB_NOTSUPPORTED: function not supported
 119  *  DISPLAYDIB_INVALIDDIB: null or invalid DIB header
 120  *  DISPLAYDIB_INVALIDFORMAT: invalid DIB format
 121  *  DISPLAYDIB_INVALIDTASK: not called from current task
 122  *
 123  * BUGS
 124  *
 125  *  Waiting for keypresses is not implemented.
 126  */
 127 WORD WINAPI DisplayDib(
 128                 LPBITMAPINFO lpbi, /* [in] DIB header with resolution and palette */
 129                 LPSTR lpBits,      /* [in] Bitmap bits to show */
 130                 WORD wFlags        /* [in] */
 131         )
 132 {
 133 #if 0
 134     WORD ret;
 135
 136     if (wFlags&DISPLAYDIB_END) {
 137         if (dispdib_multi) DISPDIB_End();
 138         dispdib_multi = 0;
 139         return DISPLAYDIB_NOERROR;
 140     }
 141     if (!dispdib_multi) {
 142         ret=DISPDIB_Begin(wFlags);
 143         if (ret) return ret;
 144     }
 145     if (wFlags&DISPLAYDIB_BEGIN) dispdib_multi = 1;
 146     if (!(wFlags&DISPLAYDIB_NOPALETTE)) {
 147         DISPDIB_Palette(lpbi);
 148     }
 149     /* FIXME: not sure if it's valid to draw images in DISPLAYDIB_BEGIN, so... */
 150     if (lpBits) {
 151         DISPDIB_Show(&(lpbi->bmiHeader),lpBits,wFlags);
 152     }
 153     if (!(wFlags&DISPLAYDIB_NOWAIT)) {
 154         FIXME("wait not implemented\n");
 155     }
 156     if (!dispdib_multi) DISPDIB_End();
 157 #endif
 158     FIXME( "broken, should be rewritten using ddraw\n" );
 159     return DISPLAYDIB_NOERROR;
 160 }