arch/all-mingw32/hidd/wingdi/bitmap.c

   1 /*
   2     Copyright © 1995-2011, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Bitmap class for GDI hidd.
   6     Lang: English.
   7
   8     Note: this implementation ignores GC_COLMASK. Windows GDI has no way to support it,
   9           however color masks seem to be not used anywhere in AROS.
  10 */
  11
  12 /****************************************************************************************/
  13
  14 #define __OOP_NOATTRBASES__
  15
  16 #include <stdlib.h>
  17 #include <stdio.h>
  18 #include <string.h>
  19
  20 #include <proto/oop.h>
  21 #include <proto/utility.h>
  22 #include <exec/alerts.h>
  23 #include <aros/macros.h>
  24 #include <exec/memory.h>
  25 #include <exec/lists.h>
  26 #include <graphics/rastport.h>
  27 #include <graphics/gfx.h>
  28 #include <oop/oop.h>
  29 #include <hidd/graphics.h>
  30 #include <aros/symbolsets.h>
  31
  32 #define SDEBUG 0
  33 #define DEBUG 0
  34 #define DEBUG_TEXT(x)
  35 #include <aros/debug.h>
  36
  37 #include LC_LIBDEFS_FILE
  38
  39 #include "gdi.h"
  40
  41 #include "bitmap.h"
  42
  43 /****************************************************************************************/
  44
  45 #define AO(x)             (aoHidd_BitMap_ ## x)
  46 #define GOT_BM_ATTR(code) GOT_ATTR(code, aoHidd_BitMap, bitmap)
  47
  48 struct bitmapinfo_mono
  49 {
  50     BITMAPINFOHEADER bmiHeader;
  51     UWORD            bmiColors[2];
  52 };
  53
  54 static OOP_AttrBase HiddBitMapAttrBase;
  55 static OOP_AttrBase HiddSyncAttrBase;
  56 static OOP_AttrBase HiddPixFmtAttrBase;
  57 static OOP_AttrBase HiddGDIBitMapAB;
  58
  59 static struct OOP_ABDescr attrbases[] =
  60 {
  61     { IID_Hidd_BitMap   , &HiddBitMapAttrBase   },
  62     { IID_Hidd_Sync     , &HiddSyncAttrBase     },
  63     { IID_Hidd_PixFmt   , &HiddPixFmtAttrBase   },
  64     /* Private bases */
  65     { IID_Hidd_GDIBitMap, &HiddGDIBitMapAB      },
  66     { NULL              , NULL                  }
  67 };
  68
  69 /****************************************************************************************/
  70
  71 #ifdef DEBUG_PLANAR
  72 #define PRINT_PLANE(bm, n, startx, xlim, ylim)                                          \
  73 {                                                                                       \
  74     ULONG start = startx / 8;                                                           \
  75     ULONG xlimit = xlim / 8;                                                            \
  76     ULONG ylimit = (ylim < bm.Rows) ? ylim : bm.Rows;                                   \
  77     UBYTE *plane = bm.Planes[n] + start;                                                \
  78     UBYTE i;                                                                            \
  79     ULONG x, y;                                                                         \
  80                                                                                         \
  81     if (xlimit > (start - bm.BytesPerRow))                                              \
  82         xlimit = start - bm.BytesPerRow;                                                \
  83     bug("[GDIBitMap] Plane %u data (%u pixels from %u, address 0x%p):\n", n, xlimit * 8, start * 8, plane); \
  84     for (y = 0; y < ylimit; y++) {                                                      \
  85         for (x = 0; x < xlimit; x++) {                                                  \
  86             for (i = 0x80; i; i >>= 1)                                                  \
  87                 bug((plane[x] & i) ? "#" : ".");                                        \
  88         }                                                                               \
  89         bug("\n");                                                                      \
  90         plane += bm.BytesPerRow;                                                        \
  91     }                                                                                   \
  92 }
  93
  94 #define PRINT_MONO_DC(dc, startx, starty, width, height) \
  95 {                                                        \
  96     ULONG x, y;                                          \
  97                                                          \
  98     bug("[GDIBitMap] Device context data:\n");           \
  99     for (y = starty; y < height; y++) {                  \
 100         for (x = startx; x < width; x++) {               \
 101             ULONG pix = GDICALL(GetPixel, dc, x, y);     \
 102                                                          \
 103             bug(pix ? "." : "#");                        \
 104         }                                                \
 105         bug("\n");                                       \
 106     }                                                    \
 107 }
 108
 109 #else
 110 #define PRINT_PLANE(bm, n, startx, xlim, ylim)
 111 #define PRINT_MONO_DC(dc, startx, starty, width, height)
 112 #endif
 113
 114 /****************************************************************************************/
 115
 116 VOID GDIBM__Hidd_BitMap__PutPixel(OOP_Class *cl, OOP_Object *o, struct pHidd_BitMap_PutPixel *msg)
 117 {
 118     struct bitmap_data *data = OOP_INST_DATA(cl, o);
 119
 120     DB2(bug("[GDI] hidd.bitmap.gdibitmap::PutPixel(0x%p): (%lu, %lu) = 0x%08lX\n", o, msg->x, msg->y, msg->pixel));
 121     Forbid();
 122     GDICALL(SetROP2, data->dc, R2_COPYPEN);
 123     GDICALL(SetPixel, data->dc, msg->x, msg->y, msg->pixel);
 124     Permit();
 125     CHECK_STACK
 126 }
 127
 128 /****************************************************************************************/
 129
 130 HIDDT_Pixel GDIBM__Hidd_BitMap__GetPixel(OOP_Class *cl, OOP_Object *o, struct pHidd_BitMap_GetPixel *msg)
 131 {
 132     struct bitmap_data *data = OOP_INST_DATA(cl, o);
 133     HIDDT_Pixel         pixel;
 134
 135     Forbid();
 136     pixel = GDICALL(GetPixel, data->dc, msg->x, msg->y);
 137     Permit();
 138     CHECK_STACK
 139
 140     return pixel;
 141 }
 142
 143 /****************************************************************************************/
 144
 145 static void FillRect(struct bitmap_data *data, ULONG col, ULONG mode, ULONG minX, ULONG minY, ULONG width, ULONG height)
 146 {
 147     APTR br, orig_br;
 148     DB2(bug("[GDI] Brush color 0x%08lX, mode 0x%08lX\n", col, mode));
 149
 150     Forbid();
 151     br = GDICALL(CreateSolidBrush, col);
 152     if (br) {
 153         orig_br = GDICALL(SelectObject, data->dc, br);
 154         GDICALL(PatBlt, data->dc, minX, minY, width, height, mode);
 155         GDICALL(SelectObject, data->dc, orig_br);
 156         GDICALL(DeleteObject, br);
 157     }
 158     Permit();
 159 }
 160
 161 /* Table of raster operations (ROPs) corresponding to AROS GC drawmodes */
 162 static ULONG Fill_DrawModeTable[] = {
 163     BLACKNESS,
 164     0x00A000C9,
 165     0x00500325,
 166     PATCOPY,
 167     0x000A0329,
 168     0x00AA0029,
 169     PATINVERT,
 170     0x00FA0089,
 171     0x000500A9,
 172     0x00A50065, /* PDnx - not sure */
 173     DSTINVERT,
 174     0x00F50225,
 175     0x000F0001,
 176     0x00AF0229,
 177     0x005F00E9,
 178     WHITENESS
 179 };
 180
 181 VOID GDIBM__Hidd_BitMap__FillRect(OOP_Class *cl, OOP_Object *o, struct pHidd_BitMap_DrawRect *msg)
 182 {
 183     struct bitmap_data *data = OOP_INST_DATA(cl, o);
 184     ULONG col = GC_FG(msg->gc);
 185     ULONG mode = Fill_DrawModeTable[GC_DRMD(msg->gc)];
 186
 187     D(bug("[GDI] hidd.bitmap.gdibitmap::FillRect(0x%p, %d,%d,%d,%d)\n", o, msg->minX, msg->minY, msg->maxX, msg->maxY));
 188     FillRect(data, col, mode, msg->minX, msg->minY, msg->maxX - msg->minX + 1, msg->maxY - msg->minY + 1);
 189     CHECK_STACK
 190 }
 191
 192 /****************************************************************************************/
 193
 194 /* Raster operations for drawing primitives */
 195 static ULONG R2_DrawModeTable[] = {
 196     R2_BLACK,
 197     R2_MASKPEN,     /* bitmap AND pen       */
 198     R2_MASKPENNOT,  /* NOT bitmap AND pen   */
 199     R2_COPYPEN,     /* pen                  */
 200     R2_MASKNOTPEN,  /* bitmap AND NOT pen   */
 201     R2_NOP,         /* bitmap               */
 202     R2_XORPEN,      /* bitmap XOR pen       */
 203     R2_MERGEPEN,    /* bitmap OR pen        */
 204     R2_NOTMERGEPEN, /* NOT (bitmap OR pen)  */
 205     R2_NOTXORPEN,   /* NOT (bitmap XOR pen) */
 206     R2_NOT,         /* NOT bitmap           */
 207     R2_MERGEPENNOT, /* NOT bitmap OR pen    */
 208     R2_NOTCOPYPEN,  /* NOT pen              */
 209     R2_MERGENOTPEN, /* NOT pen OR bitmap    */
 210     R2_NOTMASKPEN,  /* NOT (pen AND bitmap) */
 211     R2_WHITE
 212 };
 213
 214 ULONG GDIBM__Hidd_BitMap__DrawPixel(OOP_Class *cl, OOP_Object *o, struct pHidd_BitMap_DrawPixel *msg)
 215 {
 216     struct bitmap_data *data = OOP_INST_DATA(cl, o);
 217     ULONG col, mode;
 218
 219     DB2(bug("[GDI] hidd.bitmap.gdibitmap::DrawPixel(0x%p): (%lu, %lu)\n", o, msg->x, msg->y));
 220     col = GC_FG(msg->gc);
 221     mode = R2_DrawModeTable[GC_DRMD(msg->gc)];
 222
 223     Forbid();
 224     GDICALL(SetROP2, data->dc, mode);
 225     GDICALL(SetPixel, data->dc, msg->x, msg->y, col);
 226     Permit();
 227     CHECK_STACK
 228     return 0;
 229 }
 230
 231 /****************************************************************************************/
 232
 233 /* Raster operations for copying a bitmap */
 234 ULONG Copy_DrawModeTable[] = {
 235     BLACKNESS,
 236     SRCAND,      /* DSa  - src AND dest       */
 237     SRCERASE,    /* SDna - src AND NOT dest   */
 238     SRCCOPY,     /* S    - src                */
 239     0x00220326,  /* DSna - NOT src AND dest   */
 240     0x00AA0029,  /* D    - dest               */
 241     SRCINVERT,   /* DSx  - src XOR dest       */
 242     SRCPAINT,    /* DSo  - src OR dest        */
 243     NOTSRCERASE, /* DSon - NOT (src OR dest)  */
 244     0x00990066,  /* DSxn - NOT (src XOR dest) */
 245     DSTINVERT,   /* Dn   - NOT dest           */
 246     0x00DD0228,  /* SDno - src OR NOT dest    */
 247     NOTSRCCOPY,  /* Sn   - NOT src            */
 248     MERGEPAINT,  /* DSno - NOT src OR dest    */
 249     0x007700E6,  /* DSan - NOT (src AND dest) */
 250     WHITENESS
 251 };
 252
 253 VOID GDIBM__Hidd_BitMap__PutImage(OOP_Class *cl, OOP_Object *o, struct pHidd_BitMap_PutImage *msg)
 254 {
 255     struct bitmap_data *data = OOP_INST_DATA(cl, o);
 256     HIDDT_PixelFormat *src_pixfmt, *dst_pixfmt;
 257     OOP_Object *gfxhidd;
 258     HIDDT_StdPixFmt src_stdpf;
 259     APTR buf, src, dst;
 260     ULONG bufmod, bufsize;
 261     BITMAPINFOHEADER bitmapinfo =
 262     {
 263         sizeof(BITMAPINFOHEADER),
 264         0, 0,
 265         1,
 266         32,
 267         BI_RGB,
 268         0, 0, 0,  0, 0
 269     };
 270
 271 /*  EnterFunc(bug("GDIGfx.BitMap::PutImage(pa=%p, x=%d, y=%d, w=%d, h=%d)\n",
 272                   msg->pixels, msg->x, msg->y, msg->width, msg->height));*/
 273
 274     switch(msg->pixFmt) {
 275     case vHidd_StdPixFmt_Native:
 276     case vHidd_StdPixFmt_Native32:
 277         src_stdpf = vHidd_StdPixFmt_0BGR32_Native;
 278         break;
 279     default:
 280         src_stdpf = msg->pixFmt;
 281     }
 282
 283     bufmod = msg->width * sizeof(HIDDT_Pixel);
 284     bufsize = bufmod * msg->height;
 285     buf = AllocMem(bufsize, MEMF_ANY);
 286     if (buf)
 287     {
 288         ULONG drmd = GC_DRMD(msg->gc);
 289
 290         OOP_GetAttr(o, aHidd_BitMap_GfxHidd, (IPTR *)&gfxhidd);
 291         src_pixfmt = (HIDDT_PixelFormat *)HIDD_Gfx_GetPixFmt(gfxhidd, src_stdpf);
 292         /* DIB pixels are expected to be 0x00RRGGBB */
 293         dst_pixfmt = (HIDDT_PixelFormat *)HIDD_Gfx_GetPixFmt(gfxhidd, vHidd_StdPixFmt_0RGB32_Native);
 294         src = msg->pixels;
 295         dst = buf;
 296         HIDD_BM_ConvertPixels(o, &src, src_pixfmt, msg->modulo, &dst, dst_pixfmt, bufmod,
 297                               msg->width, msg->height, NULL);
 298         bitmapinfo.biWidth = msg->width;
 299         bitmapinfo.biHeight = -msg->height; /* Minus here means top-down bitmap */
 300         Forbid();
 301         GDICALL(StretchDIBits, data->dc, msg->x, msg->y, msg->width, msg->height, 0, 0, msg->width, msg->height, buf, (BITMAPINFO *)&bitmapinfo, DIB_RGB_COLORS, Copy_DrawModeTable[drmd]);
 302         Permit();
 303         FreeMem(buf, bufsize);
 304     }
 305     CHECK_STACK
 306 }
 307
 308 /****************************************************************************************/
 309
 310 /* TODO: These little stubs help to detect methods calls */
 311
 312 VOID GDIBM__Hidd_BitMap__PutImageLUT(OOP_Class *cl, OOP_Object *o, struct pHidd_BitMap_PutImageLUT *msg)
 313 {
 314     EnterFunc(bug("GDIGfx.BitMap::PutImageLUT(pa=%p, x=%d, y=%d, w=%d, h=%d)\n",
 315                   msg->pixels, msg->x, msg->y, msg->width, msg->height));
 316
 317     OOP_DoSuperMethod(cl, o, (OOP_Msg)msg);
 318     CHECK_STACK
 319 }
 320
 321 VOID GDIBM__Hidd_BitMap__GetImageLUT(OOP_Class *cl, OOP_Object *o, struct pHidd_BitMap_GetImageLUT *msg)
 322 {
 323     EnterFunc(bug("GDIGfx.BitMap::GetImageLUT(pa=%p, x=%d, y=%d, w=%d, h=%d)\n",
 324                   msg->pixels, msg->x, msg->y, msg->width, msg->height));
 325
 326     OOP_DoSuperMethod(cl, o, (OOP_Msg)msg);
 327     CHECK_STACK
 328 }
 329
 330 /****************************************************************************************/
 331
 332 VOID GDIBM__Hidd_BitMap__GetImage(OOP_Class *cl, OOP_Object *o, struct pHidd_BitMap_GetImage *msg)
 333 {
 334     struct bitmap_data *data = OOP_INST_DATA(cl, o);
 335     HIDDT_PixelFormat *src_pixfmt, *dst_pixfmt;
 336     OOP_Object *gfxhidd;
 337     HIDDT_StdPixFmt dst_stdpf;
 338     APTR tmp_dc, tmp_bitmap, dc_bitmap;
 339     APTR buf, src, dst;
 340     ULONG bufmod, bufsize;
 341     BITMAPINFOHEADER bitmapinfo = {
 342         sizeof(BITMAPINFOHEADER),
 343         0, 0,
 344         1,
 345         32,
 346         BI_RGB,
 347         0, 0, 0,  0, 0
 348     };
 349
 350 /*  EnterFunc(bug("GDIGfx.BitMap::GetImage(pa=%p, x=%d, y=%d, w=%d, h=%d)\n",
 351                   msg->pixels, msg->x, msg->y, msg->width, msg->height));*/
 352
 353     switch(msg->pixFmt) {
 354     case vHidd_StdPixFmt_Native:
 355     case vHidd_StdPixFmt_Native32:
 356         dst_stdpf = vHidd_StdPixFmt_0BGR32_Native;
 357         break;
 358     default:
 359         dst_stdpf = msg->pixFmt;
 360     }
 361
 362     bufmod = msg->width * sizeof(HIDDT_Pixel);
 363     bufsize = bufmod * msg->height;
 364     buf = AllocMem(bufsize, MEMF_ANY);
 365     if (buf) {
 366         /* First we have to extract requested rectangle into temporary bitmap because GetDIBits() can limit only scan lines number */
 367         Forbid();
 368         tmp_dc = GDICALL(CreateCompatibleDC, data->display);
 369         if (tmp_dc) {
 370             tmp_bitmap = GDICALL(CreateCompatibleBitmap, data->display, msg->width, msg->height);
 371             if (tmp_bitmap) {
 372                 dc_bitmap = GDICALL(SelectObject, tmp_dc, tmp_bitmap);
 373                 if (dc_bitmap) {
 374                     GDICALL(BitBlt, tmp_dc, 0, 0, msg->width, msg->height, data->dc, msg->x, msg->y, SRCCOPY);
 375                     bitmapinfo.biWidth = msg->width;
 376                     bitmapinfo.biHeight = -msg->height; /* Minus here means top-down bitmap */
 377                     GDICALL(GetDIBits, tmp_dc, tmp_bitmap, 0, msg->height, buf, (BITMAPINFO *)&bitmapinfo, DIB_RGB_COLORS);
 378                     GDICALL(SelectObject, tmp_dc, dc_bitmap);
 379                 }
 380                 GDICALL(DeleteObject, tmp_bitmap);
 381             }
 382             GDICALL(DeleteDC, tmp_dc);
 383         }
 384         Permit();
 385         OOP_GetAttr(o, aHidd_BitMap_GfxHidd, (IPTR *)&gfxhidd);
 386         /* DIB pixels will be 0x00RRGGBB) */
 387         src_pixfmt = (HIDDT_PixelFormat *)HIDD_Gfx_GetPixFmt(gfxhidd, vHidd_StdPixFmt_0RGB32_Native);
 388         dst_pixfmt = (HIDDT_PixelFormat *)HIDD_Gfx_GetPixFmt(gfxhidd, dst_stdpf);
 389         dst = msg->pixels;
 390         src = buf;
 391         HIDD_BM_ConvertPixels(o, &src, src_pixfmt, bufmod, &dst, dst_pixfmt, msg->modulo,
 392                               msg->width, msg->height, NULL);
 393         FreeMem(buf, bufsize);
 394     }
 395     CHECK_STACK
 396 }
 397
 398 /****************************************************************************************/
 399
 400 VOID GDIBM__Root__Get(OOP_Class *cl, OOP_Object *o, struct pRoot_Get *msg)
 401 {
 402     struct bitmap_data *data = OOP_INST_DATA(cl, o);
 403     ULONG               idx;
 404
 405     if (IS_GDIBM_ATTR(msg->attrID, idx)) {
 406         switch (idx)
 407         {
 408         case aoHidd_GDIBitMap_DeviceContext:
 409             *msg->storage = (IPTR)data->dc;
 410             return;
 411         }
 412     } else if (IS_BM_ATTR(msg->attrID, idx)) {
 413         switch (idx)
 414         {
 415         case aoHidd_BitMap_LeftEdge:
 416             *msg->storage = data->bm_left;
 417             return;
 418         case aoHidd_BitMap_TopEdge:
 419             *msg->storage = data->bm_top;
 420             return;
 421         }
 422     }
 423     OOP_DoSuperMethod(cl, o, (OOP_Msg)msg);
 424 }
 425
 426 /****************************************************************************************/
 427
 428 VOID GDIBM__Root__Set(OOP_Class *cl, OOP_Object *obj, struct pRoot_Set *msg)
 429 {
 430     struct bitmap_data *data = OOP_INST_DATA(cl, obj);
 431     struct TagItem  *tag, *tstate;
 432     ULONG           idx;
 433     BOOL            change_position = FALSE;
 434
 435     tstate = msg->attrList;
 436     while((tag = NextTagItem(&tstate)))
 437     {
 438         if (IS_BM_ATTR(tag->ti_Tag, idx)) {
 439             switch(idx)
 440             {
 441             case aoHidd_BitMap_LeftEdge:
 442                 data->bm_left = tag->ti_Data;
 443                 change_position = TRUE;
 444                 break;
 445             case aoHidd_BitMap_TopEdge:
 446                 data->bm_top = tag->ti_Data;
 447                 change_position = TRUE;
 448                 break;
 449             }
 450         }
 451     }
 452
 453     if (change_position) {
 454         /* Fix up position. We can completely scroll out
 455            of our window into all 4 sides, but not more */
 456         if (data->bm_left > data->win_width)
 457             data->bm_left = data->win_width;
 458         else if (data->bm_left < -data->bm_width)
 459             data->bm_left = -data->bm_width;
 460         if (data->bm_top > data->win_height)
 461             data->bm_top = data->win_height;
 462         else if (data->bm_top < -data->bm_height)
 463             data->bm_top = -data->bm_height;
 464
 465         Forbid();
 466         if (data->window)
 467             USERCALL(SetWindowPos, data->window, NULL, data->bm_left - 1, data->bm_top - 1, 0, 0, SWP_NOSIZE|SWP_NOZORDER);
 468         Permit();
 469     }
 470
 471     OOP_DoSuperMethod(cl, obj, (OOP_Msg)msg);
 472 }
 473
 474 /****************************************************************************************/
 475
 476 OOP_Object *GDIBM__Root__New(OOP_Class *cl, OOP_Object *o, struct pRoot_New *msg)
 477 {
 478     OOP_Object  *friend = NULL, *pixfmt;
 479     APTR         display, my_dc, my_bitmap = NULL;
 480     APTR         orig_bitmap = NULL;
 481     ULONG        width, height;
 482     HIDDT_ModeID modeid;
 483     IPTR         win_width  = 0;
 484     IPTR         win_height = 0;
 485     IPTR         depth;
 486     IPTR         attrs[num_Hidd_BitMap_Attrs];
 487     struct bitmap_data *data;
 488
 489     DECLARE_ATTRCHECK(bitmap);
 490
 491     EnterFunc(bug("GDIBM::New()\n"));
 492     /* Parse the attributes */
 493     if (0 != OOP_ParseAttrs(msg->attrList, attrs, num_Hidd_BitMap_Attrs,
 494                             &ATTRCHECK(bitmap), HiddBitMapAttrBase))
 495     {
 496         D(kprintf("!!! GDIGfx::BitMap() FAILED TO PARSE ATTRS !!!\n"));
 497
 498         return NULL;
 499     }
 500
 501     if (GOT_BM_ATTR(Friend))
 502         friend = (OOP_Object *)attrs[AO(Friend)];
 503     else
 504         friend = NULL;
 505
 506     width  = attrs[AO(Width)];
 507     height = attrs[AO(Height)];
 508     pixfmt = (OOP_Object *)attrs[AO(PixFmt)];
 509
 510     OOP_GetAttr(pixfmt, aHidd_PixFmt_Depth, &depth);
 511
 512     /* Get the device context from the friend bitmap */
 513 #if 0
 514     if (NULL != friend)
 515     {
 516         OOP_GetAttr(friend, aHidd_GDIBitMap_Drawable, (IPTR *)&friend_drawable);
 517     }
 518 #else
 519     (void)friend; // Unused
 520 #endif
 521
 522     D(bug("Creating GDI bitmap: %ldx%ldx%ld\n", width, height, depth));
 523     display = (APTR)GetTagData(aHidd_GDIBitMap_SysDisplay, 0, msg->attrList);
 524     modeid = (HIDDT_ModeID)GetTagData(aHidd_BitMap_ModeID, vHidd_ModeID_Invalid, msg->attrList);
 525     /* This relies on the fact that bitmaps with aHidd_BitMap_Displayable set to TRUE always
 526        also get aHidd_BitMap_ModeID with valid value. Currently this seems to be true and i
 527        beleive it should stay so */
 528     if (modeid != vHidd_ModeID_Invalid) {
 529         OOP_Object *gfx = (OOP_Object *)attrs[AO(GfxHidd)];
 530         OOP_Object *sync, *pixfmt;
 531
 532         D(bug("[GDI] Display driver object: 0x%p\n", gfx));
 533         HIDD_Gfx_GetMode(gfx, modeid, &sync, &pixfmt);
 534         OOP_GetAttr(sync, aHidd_Sync_HDisp, &win_width);
 535         OOP_GetAttr(sync, aHidd_Sync_VDisp, &win_height);
 536         D(bug("[GDI] Display window size: %dx%d\n", win_width, win_height));
 537     }
 538
 539     Forbid();
 540     my_dc = GDICALL(CreateCompatibleDC, display);
 541     D(bug("[GDI] Memory device context: 0x%p\n", my_dc));
 542     if (my_dc) {
 543         my_bitmap = GDICALL(CreateCompatibleBitmap, display, (width + 15) & ~15, height);
 544         D(bug("[GDI] Memory bitmap: 0x%p\n", my_bitmap));
 545         if (my_bitmap)
 546             orig_bitmap = GDICALL(SelectObject, my_dc, my_bitmap);
 547         D(bug("[GDI] Olriginal DC bitmap: 0x%p\n", orig_bitmap));
 548     }
 549     Permit();
 550
 551     if (!my_dc)
 552         return NULL;
 553     if (!orig_bitmap)
 554         goto dispose_bitmap;
 555
 556     o = (OOP_Object *)OOP_DoSuperMethod(cl, o, (OOP_Msg) msg);
 557     D(bug("[GDI] Object created by superclass: 0x%p\n", o));
 558     if (o) {
 559         data = OOP_INST_DATA(cl, o);
 560         /* Get some info passed to us by the gdigfxhidd class */
 561         data->dc         = my_dc;
 562         data->bitmap     = my_bitmap;
 563         data->dc_bitmap  = orig_bitmap;
 564         data->display    = display;
 565         data->window     = NULL;
 566         data->win_width  = win_width;
 567         data->win_height = win_height;
 568         data->bm_width   = width;
 569         data->bm_height  = height;
 570         data->bm_left    = 0;
 571         data->bm_top     = 0;
 572         CHECK_STACK
 573         ReturnPtr("GDIGfx.BitMap::New()", OOP_Object *, o);
 574     } /* if (object allocated by superclass) */
 575 dispose_bitmap:
 576     Forbid();
 577     if (orig_bitmap)
 578         GDICALL(SelectObject, my_dc, orig_bitmap);
 579     if (my_bitmap)
 580         GDICALL(DeleteObject, my_bitmap);
 581     GDICALL(DeleteDC, my_dc);
 582     Permit();
 583
 584     ReturnPtr("GDIGfx.BitMap::New()", OOP_Object *, NULL);
 585
 586 }
 587
 588 /****************************************************************************************/
 589
 590 VOID GDIBM__Root__Dispose(OOP_Class *cl, OOP_Object *o, OOP_Msg msg)
 591 {
 592     struct bitmap_data *data = OOP_INST_DATA(cl, o);
 593
 594     EnterFunc(bug("GDIGfx.BitMap::Dispose()\n"));
 595
 596     Forbid();
 597     if (data->node.mln_Pred)
 598         Remove((struct Node *)data);
 599     if (data->window)
 600         NATIVECALL(GDI_PutMsg, data->window, WM_CLOSE, 0, 0);
 601     if (data->dc_bitmap)
 602         GDICALL(SelectObject, data->dc, data->dc_bitmap);
 603     if (data->bitmap)
 604         GDICALL(DeleteObject, data->bitmap);
 605     if (data->dc)
 606         GDICALL(DeleteDC, data->dc);
 607     Permit();
 608
 609     OOP_DoSuperMethod(cl, o, msg);
 610
 611     CHECK_STACK
 612     ReturnVoid("GDIGfx.BitMap::Dispose");
 613 }
 614
 615 /****************************************************************************************/
 616
 617 VOID GDIBM__Hidd_BitMap__Clear(OOP_Class *cl, OOP_Object *o, struct pHidd_BitMap_Clear *msg)
 618 {
 619     struct bitmap_data *data = OOP_INST_DATA(cl, o);
 620     IPTR width, height;
 621
 622     EnterFunc(bug("[GDI] hidd.bitmap.gdibitmap::Clear()\n"));
 623
 624     /* Get width & height from bitmap superclass */
 625
 626     OOP_GetAttr(o, aHidd_BitMap_Width,  &width);
 627     OOP_GetAttr(o, aHidd_BitMap_Height, &height);
 628
 629     FillRect(data, GC_BG(msg->gc), PATCOPY, 0, 0, width, height);
 630 }
 631
 632 /****************************************************************************************/
 633
 634 VOID GDIBM__Hidd_BitMap__UpdateRect(OOP_Class *cl, OOP_Object *o, struct pHidd_BitMap_UpdateRect *msg)
 635 {
 636     struct bitmap_data *data = OOP_INST_DATA(cl, o);
 637
 638     Forbid();
 639     if (data->window) {
 640         RECT r = {
 641             msg->x,
 642             msg->y,
 643             msg->x + msg->width,
 644             msg->y + msg->height
 645         };
 646
 647         USERCALL(RedrawWindow, data->window, &r, NULL, RDW_INVALIDATE|RDW_UPDATENOW);
 648     }
 649     Permit();
 650 }
 651
 652 /****************************************************************************************/
 653
 654 static int GDIBM_Init(LIBBASETYPEPTR LIBBASE)
 655 {
 656     return OOP_ObtainAttrBases(attrbases);
 657 }
 658
 659 /****************************************************************************************/
 660
 661 static int GDIBM_Expunge(LIBBASETYPEPTR LIBBASE)
 662 {
 663     OOP_ReleaseAttrBases(attrbases);
 664     return TRUE;
 665 }
 666
 667 /****************************************************************************************/
 668
 669 ADD2INITLIB(GDIBM_Init, 0);
 670 ADD2EXPUNGELIB(GDIBM_Expunge, 0);