objects/bitmap.c

   1 /*
   2  * GDI bitmap objects
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  */
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <X11/Xlib.h>
   9 #include <X11/Xutil.h>
  10 #include "gdi.h"
  11 #include "arch.h"
  12 #include "callback.h"
  13 #include "dc.h"
  14 #include "bitmap.h"
  15 #include "resource.h"  /* for ConvertCore/InfoBitmap */
  16 #include "stddebug.h"
  17 /* #define DEBUG_GDI    */
  18 /* #define DEBUG_BITMAP */
  19 #include "debug.h"
  20
  21   /* GCs used for B&W and color bitmap operations */
  22 GC BITMAP_monoGC = 0, BITMAP_colorGC = 0;
  23
  24 extern void CLIPPING_UpdateGCRegion( DC * dc );  /* objects/clipping.c */
  25
  26 /***********************************************************************
  27  *           BITMAP_Init
  28  */
  29 BOOL BITMAP_Init(void)
  30 {
  31     Pixmap tmpPixmap;
  32
  33       /* Create the necessary GCs */
  34
  35     if ((tmpPixmap = XCreatePixmap( display, rootWindow, 1, 1, 1 )))
  36     {
  37         BITMAP_monoGC = XCreateGC( display, tmpPixmap, 0, NULL );
  38         XSetGraphicsExposures( display, BITMAP_monoGC, False );
  39         XFreePixmap( display, tmpPixmap );
  40     }
  41
  42     if (screenDepth != 1)
  43     {
  44         if ((tmpPixmap = XCreatePixmap(display, rootWindow, 1,1,screenDepth)))
  45         {
  46             BITMAP_colorGC = XCreateGC( display, tmpPixmap, 0, NULL );
  47             XSetGraphicsExposures( display, BITMAP_colorGC, False );
  48             XFreePixmap( display, tmpPixmap );
  49         }
  50     }
  51     return TRUE;
  52 }
  53
  54
  55 /***********************************************************************
  56  *           BITMAP_BmpToImage
  57  *
  58  * Create an XImage pointing to the bitmap data.
  59  */
  60 static XImage *BITMAP_BmpToImage( BITMAP * bmp, void * bmpData )
  61 {
  62     extern void _XInitImageFuncPtrs( XImage* );
  63     XImage * image;
  64
  65     image = XCreateImage( display, DefaultVisualOfScreen(screen),
  66                           bmp->bmBitsPixel, ZPixmap, 0, bmpData,
  67                           bmp->bmWidth, bmp->bmHeight, 16, bmp->bmWidthBytes );
  68     if (!image) return 0;
  69     image->byte_order = MSBFirst;
  70     image->bitmap_bit_order = MSBFirst;
  71     image->bitmap_unit = 16;
  72     _XInitImageFuncPtrs(image);
  73     return image;
  74 }
  75
  76
  77 /***********************************************************************
  78  *           CreateBitmap    (GDI.48)
  79  */
  80 HBITMAP CreateBitmap( short width, short height,
  81                       BYTE planes, BYTE bpp, LPSTR bits )
  82 {
  83     BITMAPOBJ * bmpObjPtr;
  84     HBITMAP hbitmap;
  85
  86     dprintf_gdi( stddeb, "CreateBitmap: %dx%d, %d colors\n",
  87                  width, height, 1 << (planes*bpp) );
  88
  89       /* Check parameters */
  90     if (!height || !width || planes != 1) return 0;
  91     if ((bpp != 1) && (bpp != screenDepth)) return 0;
  92     if (height < 0) height = -height;
  93     if (width < 0) width = -width;
  94
  95       /* Create the BITMAPOBJ */
  96     hbitmap = GDI_AllocObject( sizeof(BITMAPOBJ), BITMAP_MAGIC );
  97     if (!hbitmap) return 0;
  98     bmpObjPtr = (BITMAPOBJ *) GDI_HEAP_LIN_ADDR( hbitmap );
  99
 100     bmpObjPtr->size.cx = 0;
 101     bmpObjPtr->size.cy = 0;
 102     bmpObjPtr->bitmap.bmType = 0;
 103     bmpObjPtr->bitmap.bmWidth = width;
 104     bmpObjPtr->bitmap.bmHeight = height;
 105     bmpObjPtr->bitmap.bmPlanes = planes;
 106     bmpObjPtr->bitmap.bmBitsPixel = bpp;
 107     bmpObjPtr->bitmap.bmWidthBytes = (width * bpp + 15) / 16 * 2;
 108     bmpObjPtr->bitmap.bmBits = NULL;
 109
 110       /* Create the pixmap */
 111     bmpObjPtr->pixmap = XCreatePixmap(display, rootWindow, width, height, bpp);
 112     if (!bmpObjPtr->pixmap)
 113     {
 114         GDI_HEAP_FREE( hbitmap );
 115         hbitmap = 0;
 116     }
 117     else if (bits)  /* Set bitmap bits */
 118         SetBitmapBits( hbitmap, height * bmpObjPtr->bitmap.bmWidthBytes, bits);
 119     return hbitmap;
 120 }
 121
 122
 123 /***********************************************************************
 124  *           CreateCompatibleBitmap    (GDI.51)
 125  */
 126 HBITMAP CreateCompatibleBitmap( HDC hdc, short width, short height )
 127 {
 128     DC * dc;
 129     dprintf_gdi(stddeb, "CreateCompatibleBitmap: %d %dx%d\n",
 130                 hdc, width, height );
 131     if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return 0;
 132     return CreateBitmap( width, height, 1, dc->w.bitsPerPixel, NULL );
 133 }
 134
 135
 136 /***********************************************************************
 137  *           CreateBitmapIndirect    (GDI.49)
 138  */
 139 HBITMAP CreateBitmapIndirect( BITMAP * bmp )
 140 {
 141     return CreateBitmap( bmp->bmWidth, bmp->bmHeight, bmp->bmPlanes,
 142                          bmp->bmBitsPixel, PTR_SEG_TO_LIN( bmp->bmBits ) );
 143 }
 144
 145
 146 /***********************************************************************
 147  *           GetBitmapBits    (GDI.74)
 148  */
 149 LONG GetBitmapBits( HBITMAP hbitmap, LONG count, LPSTR buffer )
 150 {
 151     BITMAPOBJ * bmp;
 152     LONG height;
 153     XImage * image;
 154
 155     bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 156     if (!bmp) return 0;
 157
 158     dprintf_bitmap(stddeb, "GetBitmapBits: %dx%d %d colors %p\n",
 159             bmp->bitmap.bmWidth, bmp->bitmap.bmHeight,
 160             1 << bmp->bitmap.bmBitsPixel, buffer );
 161       /* Only get entire lines */
 162     height = count / bmp->bitmap.bmWidthBytes;
 163     if (height > bmp->bitmap.bmHeight) height = bmp->bitmap.bmHeight;
 164     if (!height) return 0;
 165
 166     if (!(image = BITMAP_BmpToImage( &bmp->bitmap, buffer ))) return 0;
 167     CallTo32_LargeStack( (int(*)())XGetSubImage, 11,
 168                          display, bmp->pixmap, 0, 0, bmp->bitmap.bmWidth,
 169                          height, AllPlanes, ZPixmap, image, 0, 0 );
 170     image->data = NULL;
 171     XDestroyImage( image );
 172     return height * bmp->bitmap.bmWidthBytes;
 173 }
 174
 175
 176 /***********************************************************************
 177  *           SetBitmapBits    (GDI.106)
 178  */
 179 LONG SetBitmapBits( HBITMAP hbitmap, LONG count, LPSTR buffer )
 180 {
 181     BITMAPOBJ * bmp;
 182     LONG height;
 183     XImage * image;
 184
 185     bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 186     if (!bmp) return 0;
 187
 188     dprintf_bitmap(stddeb, "SetBitmapBits: %dx%d %d colors %p\n",
 189             bmp->bitmap.bmWidth, bmp->bitmap.bmHeight,
 190             1 << bmp->bitmap.bmBitsPixel, buffer );
 191
 192       /* Only set entire lines */
 193     height = count / bmp->bitmap.bmWidthBytes;
 194     if (height > bmp->bitmap.bmHeight) height = bmp->bitmap.bmHeight;
 195     if (!height) return 0;
 196
 197     if (!(image = BITMAP_BmpToImage( &bmp->bitmap, buffer ))) return 0;
 198     CallTo32_LargeStack( XPutImage, 10,
 199                          display, bmp->pixmap, BITMAP_GC(bmp), image, 0, 0,
 200                          0, 0, bmp->bitmap.bmWidth, height );
 201     image->data = NULL;
 202     XDestroyImage( image );
 203     return height * bmp->bitmap.bmWidthBytes;
 204 }
 205
 206
 207 /**********************************************************************
 208  *          LoadBitmap    (USER.175)
 209  */
 210 HBITMAP LoadBitmap( HANDLE instance, SEGPTR name )
 211 {
 212     HBITMAP hbitmap = 0;
 213     HDC hdc;
 214     HRSRC hRsrc;
 215     HGLOBAL handle;
 216     int size;
 217     long *lp;
 218
 219     if (HIWORD(name))
 220     {
 221         char *str = (char *)PTR_SEG_TO_LIN( name );
 222         dprintf_bitmap( stddeb, "LoadBitmap(%04x,'%s')\n", instance, str );
 223         if (str[0] == '#') name = (SEGPTR)atoi( str + 1 );
 224     }
 225     else
 226         dprintf_bitmap(stddeb,"LoadBitmap(%04x,%04x)\n",instance,LOWORD(name));
 227
 228     if (!instance)  /* OEM bitmap */
 229     {
 230         if (HIWORD((int)name)) return 0;
 231         return OBM_LoadBitmap( LOWORD((int)name) );
 232     }
 233
 234     if (!(hRsrc = FindResource( instance, name, RT_BITMAP ))) return 0;
 235     if (!(handle = LoadResource( instance, hRsrc ))) return 0;
 236
 237     lp = (long *)LockResource( handle );
 238     size = CONV_LONG(*lp);
 239     if ((hdc = GetDC(0)) != 0)
 240     {
 241         if (size == sizeof(BITMAPCOREHEADER))
 242             hbitmap = ConvertCoreBitmap( hdc, (BITMAPCOREHEADER *) lp );
 243         else if (size == sizeof(BITMAPINFOHEADER))
 244             hbitmap = ConvertInfoBitmap( hdc, (BITMAPINFO *) lp );
 245         ReleaseDC( 0, hdc );
 246     }
 247     FreeResource( handle );
 248     return hbitmap;
 249 }
 250
 251
 252 /***********************************************************************
 253  *           BITMAP_DeleteObject
 254  */
 255 BOOL BITMAP_DeleteObject( HBITMAP hbitmap, BITMAPOBJ * bitmap )
 256 {
 257     XFreePixmap( display, bitmap->pixmap );
 258     return GDI_FreeObject( hbitmap );
 259 }
 260
 261
 262 /***********************************************************************
 263  *           BITMAP_GetObject
 264  */
 265 int BITMAP_GetObject( BITMAPOBJ * bmp, int count, LPSTR buffer )
 266 {
 267     if (count > sizeof(BITMAP)) count = sizeof(BITMAP);
 268     memcpy( buffer, &bmp->bitmap, count );
 269     return count;
 270 }
 271
 272
 273 /***********************************************************************
 274  *           BITMAP_SelectObject
 275  */
 276 HBITMAP BITMAP_SelectObject( HDC hdc, DC * dc, HBITMAP hbitmap,
 277                              BITMAPOBJ * bmp )
 278 {
 279     HRGN hrgn;
 280     HBITMAP prevHandle = dc->w.hBitmap;
 281
 282     if (!(dc->w.flags & DC_MEMORY)) return 0;
 283     hrgn = CreateRectRgn( 0, 0, bmp->bitmap.bmWidth, bmp->bitmap.bmHeight );
 284     if (!hrgn) return 0;
 285
 286     DeleteObject( dc->w.hVisRgn );
 287     dc->w.hVisRgn    = hrgn;
 288     dc->u.x.drawable = bmp->pixmap;
 289     dc->w.hBitmap    = hbitmap;
 290
 291       /* Change GC depth if needed */
 292
 293     if (dc->w.bitsPerPixel != bmp->bitmap.bmBitsPixel)
 294     {
 295         XFreeGC( display, dc->u.x.gc );
 296         dc->u.x.gc = XCreateGC( display, dc->u.x.drawable, 0, NULL );
 297         dc->w.bitsPerPixel = bmp->bitmap.bmBitsPixel;
 298         DC_InitDC( hdc );
 299     }
 300     else CLIPPING_UpdateGCRegion( dc );  /* Just update GC clip region */
 301     return prevHandle;
 302 }
 303
 304 /***********************************************************************
 305  *           CreateDiscardableBitmap    (GDI.156)
 306  */
 307 HBITMAP CreateDiscardableBitmap(HDC hdc, short width, short height)
 308 {
 309     dprintf_bitmap(stddeb,"CreateDiscardableBitmap(%04X, %d, %d); "
 310            "// call CreateCompatibleBitmap() for now!\n",
 311            hdc, width, height);
 312     return CreateCompatibleBitmap(hdc, width, height);
 313 }
 314
 315 /***********************************************************************
 316  *           GetBitmapDimensionEx    (GDI.468)
 317  */
 318 BOOL GetBitmapDimensionEx( HBITMAP hbitmap, LPSIZE size )
 319 {
 320     BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 321     if (!bmp) return FALSE;
 322     *size = bmp->size;
 323     return TRUE;
 324 }
 325
 326
 327 /***********************************************************************
 328  *           GetBitmapDimension    (GDI.162)
 329  */
 330 DWORD GetBitmapDimension( HBITMAP hbitmap )
 331 {
 332     SIZE size;
 333     if (!GetBitmapDimensionEx( hbitmap, &size )) return 0;
 334     return size.cx | (size.cy << 16);
 335 }
 336
 337 /***********************************************************************
 338  *           SetBitmapDimensionEx    (GDI.478)
 339  */
 340 BOOL SetBitmapDimensionEx( HBITMAP hbitmap, short x, short y, LPSIZE prevSize )
 341 {
 342     BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 343     if (!bmp) return FALSE;
 344     if (prevSize) *prevSize = bmp->size;
 345     bmp->size.cx = x;
 346     bmp->size.cy = y;
 347     return TRUE;
 348 }
 349
 350
 351 /***********************************************************************
 352  *           SetBitmapDimension    (GDI.163)
 353  */
 354 DWORD SetBitmapDimension( HBITMAP hbitmap, short x, short y )
 355 {
 356     SIZE size;
 357     if (!SetBitmapDimensionEx( hbitmap, x, y, &size )) return 0;
 358     return size.cx | (size.cy << 16);
 359 }