dlls/gdi/mfdrv/graphics.c

   1 /*
   2  * Metafile driver graphics functions
   3  *
   4  * Copyright 1993, 1994 Alexandre Julliard
   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 <stdlib.h>
  22 #include <string.h>
  23
  24 #include "gdi.h"
  25 #include "mfdrv/metafiledrv.h"
  26 #include "wine/debug.h"
  27
  28 WINE_DEFAULT_DEBUG_CHANNEL(metafile);
  29
  30 /**********************************************************************
  31  *           MFDRV_MoveTo
  32  */
  33 BOOL
  34 MFDRV_MoveTo(PHYSDEV dev, INT x, INT y)
  35 {
  36     return MFDRV_MetaParam2(dev,META_MOVETO,x,y);
  37 }
  38
  39 /***********************************************************************
  40  *           MFDRV_LineTo
  41  */
  42 BOOL
  43 MFDRV_LineTo( PHYSDEV dev, INT x, INT y )
  44 {
  45      return MFDRV_MetaParam2(dev, META_LINETO, x, y);
  46 }
  47
  48
  49 /***********************************************************************
  50  *           MFDRV_Arc
  51  */
  52 BOOL
  53 MFDRV_Arc( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
  54            INT xstart, INT ystart, INT xend, INT yend )
  55 {
  56      return MFDRV_MetaParam8(dev, META_ARC, left, top, right, bottom,
  57                              xstart, ystart, xend, yend);
  58 }
  59
  60
  61 /***********************************************************************
  62  *           MFDRV_Pie
  63  */
  64 BOOL
  65 MFDRV_Pie( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
  66            INT xstart, INT ystart, INT xend, INT yend )
  67 {
  68     return MFDRV_MetaParam8(dev, META_PIE, left, top, right, bottom,
  69                             xstart, ystart, xend, yend);
  70 }
  71
  72
  73 /***********************************************************************
  74  *           MFDRV_Chord
  75  */
  76 BOOL
  77 MFDRV_Chord( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
  78              INT xstart, INT ystart, INT xend, INT yend )
  79 {
  80     return MFDRV_MetaParam8(dev, META_CHORD, left, top, right, bottom,
  81                             xstart, ystart, xend, yend);
  82 }
  83
  84 /***********************************************************************
  85  *           MFDRV_Ellipse
  86  */
  87 BOOL
  88 MFDRV_Ellipse( PHYSDEV dev, INT left, INT top, INT right, INT bottom )
  89 {
  90     return MFDRV_MetaParam4(dev, META_ELLIPSE, left, top, right, bottom);
  91 }
  92
  93 /***********************************************************************
  94  *           MFDRV_Rectangle
  95  */
  96 BOOL
  97 MFDRV_Rectangle(PHYSDEV dev, INT left, INT top, INT right, INT bottom)
  98 {
  99     return MFDRV_MetaParam4(dev, META_RECTANGLE, left, top, right, bottom);
 100 }
 101
 102 /***********************************************************************
 103  *           MFDRV_RoundRect
 104  */
 105 BOOL
 106 MFDRV_RoundRect( PHYSDEV dev, INT left, INT top, INT right,
 107                  INT bottom, INT ell_width, INT ell_height )
 108 {
 109     return MFDRV_MetaParam6(dev, META_ROUNDRECT, left, top, right, bottom,
 110                             ell_width, ell_height);
 111 }
 112
 113 /***********************************************************************
 114  *           MFDRV_SetPixel
 115  */
 116 COLORREF
 117 MFDRV_SetPixel( PHYSDEV dev, INT x, INT y, COLORREF color )
 118 {
 119     return MFDRV_MetaParam4(dev, META_SETPIXEL, x, y,HIWORD(color),
 120                             LOWORD(color));
 121 }
 122
 123
 124 /******************************************************************
 125  *         MFDRV_MetaPoly - implements Polygon and Polyline
 126  */
 127 static BOOL MFDRV_MetaPoly(PHYSDEV dev, short func, LPPOINT16 pt, short count)
 128 {
 129     BOOL ret;
 130     DWORD len;
 131     METARECORD *mr;
 132
 133     len = sizeof(METARECORD) + (count * 4);
 134     if (!(mr = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, len )))
 135         return FALSE;
 136
 137     mr->rdSize = len / 2;
 138     mr->rdFunction = func;
 139     *(mr->rdParm) = count;
 140     memcpy(mr->rdParm + 1, pt, count * 4);
 141     ret = MFDRV_WriteRecord( dev, mr, mr->rdSize * 2);
 142     HeapFree( GetProcessHeap(), 0, mr);
 143     return ret;
 144 }
 145
 146
 147 /**********************************************************************
 148  *          MFDRV_Polyline
 149  */
 150 BOOL
 151 MFDRV_Polyline( PHYSDEV dev, const POINT* pt, INT count )
 152 {
 153     register int i;
 154     LPPOINT16   pt16;
 155     BOOL16      ret;
 156
 157     pt16 = HeapAlloc( GetProcessHeap(), 0, sizeof(POINT16)*count );
 158     if(!pt16) return FALSE;
 159     for (i=count;i--;)
 160     {
 161         pt16[i].x = pt[i].x;
 162         pt16[i].y = pt[i].y;
 163     }
 164     ret = MFDRV_MetaPoly(dev, META_POLYLINE, pt16, count);
 165
 166     HeapFree( GetProcessHeap(), 0, pt16 );
 167     return ret;
 168 }
 169
 170
 171 /**********************************************************************
 172  *          MFDRV_Polygon
 173  */
 174 BOOL
 175 MFDRV_Polygon( PHYSDEV dev, const POINT* pt, INT count )
 176 {
 177     register int i;
 178     LPPOINT16   pt16;
 179     BOOL16      ret;
 180
 181     pt16 = HeapAlloc( GetProcessHeap(), 0, sizeof(POINT16)*count );
 182     if(!pt16) return FALSE;
 183     for (i=count;i--;)
 184     {
 185         pt16[i].x = pt[i].x;
 186         pt16[i].y = pt[i].y;
 187     }
 188     ret = MFDRV_MetaPoly(dev, META_POLYGON, pt16, count);
 189
 190     HeapFree( GetProcessHeap(), 0, pt16 );
 191     return ret;
 192 }
 193
 194
 195 /**********************************************************************
 196  *          MFDRV_PolyPolygon
 197  */
 198 BOOL
 199 MFDRV_PolyPolygon( PHYSDEV dev, const POINT* pt, const INT* counts, UINT polygons)
 200 {
 201     BOOL ret;
 202     DWORD len;
 203     METARECORD *mr;
 204     unsigned int i,j;
 205     LPPOINT16 pt16;
 206     INT16 totalpoint16 = 0;
 207     INT16 * pointcounts;
 208
 209     for (i=0;i<polygons;i++) {
 210          totalpoint16 += counts[i];
 211     }
 212
 213     /* allocate space for all points */
 214     pt16=HeapAlloc( GetProcessHeap(), 0, sizeof(POINT16) * totalpoint16 );
 215     pointcounts = HeapAlloc( GetProcessHeap(), 0, sizeof(INT16) * totalpoint16 );
 216
 217     /* copy point counts */
 218     for (i=0;i<polygons;i++) {
 219           pointcounts[i] = counts[i];
 220     }
 221
 222     /* convert all points */
 223     for (j = totalpoint16; j--;){
 224         pt16[j].x = pt[j].x;
 225         pt16[j].y = pt[j].y;
 226     }
 227
 228     len = sizeof(METARECORD) + sizeof(WORD) + polygons*sizeof(INT16) + totalpoint16*sizeof(POINT16);
 229
 230     if (!(mr = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, len ))) {
 231          HeapFree( GetProcessHeap(), 0, pt16 );
 232          HeapFree( GetProcessHeap(), 0, pointcounts );
 233          return FALSE;
 234     }
 235
 236     mr->rdSize = len /2;
 237     mr->rdFunction = META_POLYPOLYGON;
 238     *(mr->rdParm) = polygons;
 239     memcpy(mr->rdParm + 1, pointcounts, polygons*sizeof(INT16));
 240     memcpy(mr->rdParm + 1+polygons, pt16 , totalpoint16*sizeof(POINT16));
 241     ret = MFDRV_WriteRecord( dev, mr, mr->rdSize * 2);
 242
 243     HeapFree( GetProcessHeap(), 0, pt16 );
 244     HeapFree( GetProcessHeap(), 0, pointcounts );
 245     HeapFree( GetProcessHeap(), 0, mr);
 246     return ret;
 247 }
 248
 249
 250 /**********************************************************************
 251  *          MFDRV_ExtFloodFill
 252  */
 253 BOOL
 254 MFDRV_ExtFloodFill( PHYSDEV dev, INT x, INT y, COLORREF color, UINT fillType )
 255 {
 256     return MFDRV_MetaParam4(dev,META_FLOODFILL,x,y,HIWORD(color),
 257                             LOWORD(color));
 258 }
 259
 260
 261 /******************************************************************
 262  *         MFDRV_CreateRegion
 263  *
 264  * For explanation of the format of the record see MF_Play_MetaCreateRegion in
 265  * objects/metafile.c
 266  */
 267 static INT16 MFDRV_CreateRegion(PHYSDEV dev, HRGN hrgn)
 268 {
 269     DWORD len;
 270     METARECORD *mr;
 271     RGNDATA *rgndata;
 272     RECT *pCurRect, *pEndRect;
 273     WORD Bands = 0, MaxBands = 0;
 274     WORD *Param, *StartBand;
 275     BOOL ret;
 276
 277     if (!(len = GetRegionData( hrgn, 0, NULL ))) return -1;
 278     if( !(rgndata = HeapAlloc( GetProcessHeap(), 0, len )) ) {
 279         WARN("Can't alloc rgndata buffer\n");
 280         return -1;
 281     }
 282     GetRegionData( hrgn, len, rgndata );
 283
 284     /* Overestimate of length:
 285      * Assume every rect is a separate band -> 6 WORDs per rect
 286      */
 287     len = sizeof(METARECORD) + 20 + (rgndata->rdh.nCount * 12);
 288     if( !(mr = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, len )) ) {
 289         WARN("Can't alloc METARECORD buffer\n");
 290         HeapFree( GetProcessHeap(), 0, rgndata );
 291         return -1;
 292     }
 293
 294     Param = mr->rdParm + 11;
 295     StartBand = NULL;
 296
 297     pEndRect = (RECT *)rgndata->Buffer + rgndata->rdh.nCount;
 298     for(pCurRect = (RECT *)rgndata->Buffer; pCurRect < pEndRect; pCurRect++)
 299     {
 300         if( StartBand && pCurRect->top == *(StartBand + 1) )
 301         {
 302             *Param++ = pCurRect->left;
 303             *Param++ = pCurRect->right;
 304         }
 305         else
 306         {
 307             if(StartBand)
 308             {
 309                 *StartBand = Param - StartBand - 3;
 310                 *Param++ = *StartBand;
 311                 if(*StartBand > MaxBands)
 312                     MaxBands = *StartBand;
 313                 Bands++;
 314             }
 315             StartBand = Param++;
 316             *Param++ = pCurRect->top;
 317             *Param++ = pCurRect->bottom;
 318             *Param++ = pCurRect->left;
 319             *Param++ = pCurRect->right;
 320         }
 321     }
 322     len = Param - (WORD *)mr;
 323
 324     mr->rdParm[0] = 0;
 325     mr->rdParm[1] = 6;
 326     mr->rdParm[2] = 0x1234;
 327     mr->rdParm[3] = 0;
 328     mr->rdParm[4] = len * 2;
 329     mr->rdParm[5] = Bands;
 330     mr->rdParm[6] = MaxBands;
 331     mr->rdParm[7] = rgndata->rdh.rcBound.left;
 332     mr->rdParm[8] = rgndata->rdh.rcBound.top;
 333     mr->rdParm[9] = rgndata->rdh.rcBound.right;
 334     mr->rdParm[10] = rgndata->rdh.rcBound.bottom;
 335     mr->rdFunction = META_CREATEREGION;
 336     mr->rdSize = len / 2;
 337     ret = MFDRV_WriteRecord( dev, mr, mr->rdSize * 2 );
 338     HeapFree( GetProcessHeap(), 0, mr );
 339     HeapFree( GetProcessHeap(), 0, rgndata );
 340     if(!ret)
 341     {
 342         WARN("MFDRV_WriteRecord failed\n");
 343         return -1;
 344     }
 345     return MFDRV_AddHandle( dev, hrgn );
 346 }
 347
 348
 349 /**********************************************************************
 350  *          MFDRV_PaintRgn
 351  */
 352 BOOL
 353 MFDRV_PaintRgn( PHYSDEV dev, HRGN hrgn )
 354 {
 355     INT16 index;
 356     index = MFDRV_CreateRegion( dev, hrgn );
 357     if(index == -1)
 358         return FALSE;
 359     return MFDRV_MetaParam1( dev, META_PAINTREGION, index );
 360 }
 361
 362
 363 /**********************************************************************
 364  *          MFDRV_InvertRgn
 365  */
 366 BOOL
 367 MFDRV_InvertRgn( PHYSDEV dev, HRGN hrgn )
 368 {
 369     INT16 index;
 370     index = MFDRV_CreateRegion( dev, hrgn );
 371     if(index == -1)
 372         return FALSE;
 373     return MFDRV_MetaParam1( dev, META_INVERTREGION, index );
 374 }
 375
 376
 377 /**********************************************************************
 378  *          MFDRV_FillRgn
 379  */
 380 BOOL
 381 MFDRV_FillRgn( PHYSDEV dev, HRGN hrgn, HBRUSH hbrush )
 382 {
 383     INT16 iRgn, iBrush;
 384     iRgn = MFDRV_CreateRegion( dev, hrgn );
 385     if(iRgn == -1)
 386         return FALSE;
 387     iBrush = MFDRV_CreateBrushIndirect( dev, hbrush );
 388     if(!iBrush)
 389         return FALSE;
 390     return MFDRV_MetaParam2( dev, META_FILLREGION, iRgn, iBrush );
 391 }
 392
 393 /**********************************************************************
 394  *          MFDRV_FrameRgn
 395  */
 396 BOOL
 397 MFDRV_FrameRgn( PHYSDEV dev, HRGN hrgn, HBRUSH hbrush, INT x, INT y )
 398 {
 399     INT16 iRgn, iBrush;
 400     iRgn = MFDRV_CreateRegion( dev, hrgn );
 401     if(iRgn == -1)
 402         return FALSE;
 403     iBrush = MFDRV_CreateBrushIndirect( dev, hbrush );
 404     if(!iBrush)
 405         return FALSE;
 406     return MFDRV_MetaParam4( dev, META_FRAMEREGION, iRgn, iBrush, x, y );
 407 }
 408
 409
 410 /**********************************************************************
 411  *          MFDRV_ExtSelectClipRgn
 412  */
 413 INT MFDRV_ExtSelectClipRgn( PHYSDEV dev, HRGN hrgn, INT mode )
 414 {
 415     INT16 iRgn;
 416     INT ret;
 417
 418     if (mode != RGN_COPY) return ERROR;
 419     if (!hrgn) return NULLREGION;
 420     iRgn = MFDRV_CreateRegion( dev, hrgn );
 421     if(iRgn == -1) return ERROR;
 422     ret = MFDRV_MetaParam1( dev, META_SELECTCLIPREGION, iRgn ) ? NULLREGION : ERROR;
 423     MFDRV_MetaParam1( dev, META_DELETEOBJECT, iRgn );
 424     return ret;
 425 }
 426
 427
 428 /**********************************************************************
 429  *          MFDRV_SetBkColor
 430  */
 431 COLORREF
 432 MFDRV_SetBkColor( PHYSDEV dev, COLORREF color )
 433 {
 434     return MFDRV_MetaParam2(dev, META_SETBKCOLOR, HIWORD(color),
 435                             LOWORD(color)) ? color : CLR_INVALID;
 436 }
 437
 438
 439 /**********************************************************************
 440  *          MFDRV_SetTextColor
 441  */
 442 COLORREF
 443 MFDRV_SetTextColor( PHYSDEV dev, COLORREF color )
 444 {
 445     return MFDRV_MetaParam2(dev, META_SETTEXTCOLOR, HIWORD(color),
 446                             LOWORD(color)) ? color : CLR_INVALID;
 447 }
 448
 449
 450 /**********************************************************************
 451  *          MFDRV_PolyBezier
 452  * Since MetaFiles don't record Beziers and they don't even record
 453  * approximations to them using lines, we need this stub function.
 454  */
 455 BOOL
 456 MFDRV_PolyBezier( PHYSDEV dev, const POINT *pts, DWORD count )
 457 {
 458     return FALSE;
 459 }
 460
 461 /**********************************************************************
 462  *          MFDRV_PolyBezierTo
 463  * Since MetaFiles don't record Beziers and they don't even record
 464  * approximations to them using lines, we need this stub function.
 465  */
 466 BOOL
 467 MFDRV_PolyBezierTo( PHYSDEV dev, const POINT *pts, DWORD count )
 468 {
 469     return FALSE;
 470 }