dlls/gdi32/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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdarg.h>
  22 #include <string.h>
  23 #include "windef.h"
  24 #include "winbase.h"
  25 #include "wingdi.h"
  26 #include "wine/wingdi16.h"
  27 #include "dispdib.h"
  28 #include "wine/debug.h"
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
  31
  32 #if 0
  33
  34 static int dispdib_multi = 0;
  35
  36 static WORD DISPDIB_Begin(WORD wFlags)
  37 {
  38     unsigned Xres,Yres,Depth;
  39
  40     switch(wFlags&DISPLAYDIB_MODE) {
  41         case DISPLAYDIB_MODE_DEFAULT:
  42             /* FIXME: is this supposed to autodetect? */
  43         case DISPLAYDIB_MODE_320x200x8:
  44             Xres=320; Yres=200; Depth=8; break;
  45         case DISPLAYDIB_MODE_320x240x8:
  46             Xres=320; Yres=240; Depth=8; break;
  47         default:
  48             return DISPLAYDIB_NOTSUPPORTED;
  49     }
  50     /* more or less dummy calls to Death/Resurrection, for completeness */
  51     /* FIXME: what arguments should they get? */
  52     Death16(0);
  53     if (VGA_SetMode(Xres,Yres,Depth)) {
  54          Resurrection16(0,0,0,0,0,0,0);
  55          return DISPLAYDIB_NOTSUPPORTED;
  56     }
  57     return DISPLAYDIB_NOERROR;
  58 }
  59
  60 static void DISPDIB_End(void)
  61 {
  62     Resurrection16(0,0,0,0,0,0,0); /* FIXME: arguments */
  63     VGA_Exit();
  64 }
  65
  66 static void DISPDIB_Palette(LPBITMAPINFO lpbi)
  67 {
  68     VGA_SetQuadPalette(lpbi->bmiColors,0,256);
  69 }
  70
  71 static void DISPDIB_Show(LPBITMAPINFOHEADER lpbi,LPSTR lpBits,WORD uFlags)
  72 {
  73     int Xofs,Yofs,Width=lpbi->biWidth,Height=lpbi->biHeight,Delta;
  74     int Pitch = (Width + 3) & ~3;
  75     unsigned int sPitch,sWidth,sHeight;
  76     LPSTR surf = DOSMEM_MapDosToLinear(0xa0000);
  77
  78     if (VGA_GetMode(&sHeight,&sWidth,NULL)) return;
  79     sPitch=320;
  80
  81     Delta=(Height<0)*2-1;
  82     Height*=-Delta; Pitch*=Delta;
  83
  84     if (uFlags&DISPLAYDIB_NOCENTER) {
  85         Xofs=0; Yofs=0;
  86     } else {
  87         Xofs=(sWidth-Width)/2;
  88         Yofs=(sHeight-Height)/2;
  89     }
  90     surf += (Yofs*sPitch)+Xofs;
  91     if (Pitch<0) lpBits-=Pitch*(Height-1);
  92     for (; Height; Height--,lpBits+=Pitch,surf+=sPitch) {
  93         memcpy(surf,lpBits,Width);
  94     }
  95
  96     VGA_Poll(0);
  97 }
  98 #endif
  99
 100
 101 /*********************************************************************
 102  *      DisplayDib      (DISPDIB.1)
 103  *
 104  *  Disables GDI and takes over the VGA screen to show DIBs in full screen.
 105  *
 106  * FLAGS
 107  *
 108  *  DISPLAYDIB_NOPALETTE: don't change palette
 109  *  DISPLAYDIB_NOCENTER: don't center bitmap
 110  *  DISPLAYDIB_NOWAIT: don't wait (for keypress) before returning
 111  *  DISPLAYDIB_BEGIN: start of multiple calls (does not restore the screen)
 112  *  DISPLAYDIB_END: end of multiple calls (restores the screen)
 113  *  DISPLAYDIB_MODE_DEFAULT: default display mode
 114  *  DISPLAYDIB_MODE_320x200x8: Standard VGA 320x200 256 colors
 115  *  DISPLAYDIB_MODE_320x240x8: Tweaked VGA 320x240 256 colors
 116  *
 117  * RETURNS
 118  *
 119  *  DISPLAYDIB_NOERROR: success
 120  *  DISPLAYDIB_NOTSUPPORTED: function not supported
 121  *  DISPLAYDIB_INVALIDDIB: null or invalid DIB header
 122  *  DISPLAYDIB_INVALIDFORMAT: invalid DIB format
 123  *  DISPLAYDIB_INVALIDTASK: not called from current task
 124  *
 125  * BUGS
 126  *
 127  *  Waiting for keypresses is not implemented.
 128  */
 129 WORD WINAPI DisplayDib(
 130                 LPBITMAPINFO lpbi, /* [in] DIB header with resolution and palette */
 131                 LPSTR lpBits,      /* [in] Bitmap bits to show */
 132                 WORD wFlags        /* [in] */
 133         )
 134 {
 135 #if 0
 136     WORD ret;
 137
 138     if (wFlags&DISPLAYDIB_END) {
 139         if (dispdib_multi) DISPDIB_End();
 140         dispdib_multi = 0;
 141         return DISPLAYDIB_NOERROR;
 142     }
 143     if (!dispdib_multi) {
 144         ret=DISPDIB_Begin(wFlags);
 145         if (ret) return ret;
 146     }
 147     if (wFlags&DISPLAYDIB_BEGIN) dispdib_multi = 1;
 148     if (!(wFlags&DISPLAYDIB_NOPALETTE)) {
 149         DISPDIB_Palette(lpbi);
 150     }
 151     /* FIXME: not sure if it's valid to draw images in DISPLAYDIB_BEGIN, so... */
 152     if (lpBits) {
 153         DISPDIB_Show(&(lpbi->bmiHeader),lpBits,wFlags);
 154     }
 155     if (!(wFlags&DISPLAYDIB_NOWAIT)) {
 156         FIXME("wait not implemented\n");
 157     }
 158     if (!dispdib_multi) DISPDIB_End();
 159 #endif
 160     FIXME( "broken, should be rewritten using ddraw\n" );
 161     return DISPLAYDIB_NOERROR;
 162 }