dlls/wineps.drv/graphics.c

   1 /*
   2  *      PostScript driver graphics functions
   3  *
   4  *      Copyright 1998  Huw D M Davies
   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 <stdio.h>
  23 #include <string.h>
  24 #include <math.h>
  25 #include <float.h>
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "winuser.h"
  29 #include "psdrv.h"
  30 #include "wine/debug.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(psdrv);
  33
  34 /***********************************************************************
  35  *           PSDRV_XWStoDS
  36  *
  37  * Performs a world-to-viewport transformation on the specified width.
  38  */
  39 INT PSDRV_XWStoDS( PHYSDEV dev, INT width )
  40 {
  41     POINT pt[2];
  42
  43     pt[0].x = 0;
  44     pt[0].y = 0;
  45     pt[1].x = width;
  46     pt[1].y = 0;
  47     LPtoDP( dev->hdc, pt, 2 );
  48     return pt[1].x - pt[0].x;
  49 }
  50
  51 /***********************************************************************
  52  *           PSDRV_DrawLine
  53  */
  54 static void PSDRV_DrawLine( PHYSDEV dev )
  55 {
  56     PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
  57
  58     if(physDev->pathdepth)
  59         return;
  60
  61     if (physDev->pen.style == PS_NULL)
  62         PSDRV_WriteNewPath(dev);
  63     else
  64         PSDRV_WriteStroke(dev);
  65 }
  66
  67 /***********************************************************************
  68  *           PSDRV_LineTo
  69  */
  70 BOOL CDECL PSDRV_LineTo(PHYSDEV dev, INT x, INT y)
  71 {
  72     POINT pt[2];
  73
  74     TRACE("%d %d\n", x, y);
  75
  76     GetCurrentPositionEx( dev->hdc, pt );
  77     pt[1].x = x;
  78     pt[1].y = y;
  79     LPtoDP( dev->hdc, pt, 2 );
  80
  81     PSDRV_SetPen(dev);
  82
  83     PSDRV_SetClip(dev);
  84     PSDRV_WriteMoveTo(dev, pt[0].x, pt[0].y );
  85     PSDRV_WriteLineTo(dev, pt[1].x, pt[1].y );
  86     PSDRV_DrawLine(dev);
  87     PSDRV_ResetClip(dev);
  88
  89     return TRUE;
  90 }
  91
  92
  93 /***********************************************************************
  94  *           PSDRV_Rectangle
  95  */
  96 BOOL CDECL PSDRV_Rectangle( PHYSDEV dev, INT left, INT top, INT right, INT bottom )
  97 {
  98     PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
  99     RECT rect;
 100
 101     TRACE("%d %d - %d %d\n", left, top, right, bottom);
 102
 103     SetRect(&rect, left, top, right, bottom);
 104     LPtoDP( dev->hdc, (POINT *)&rect, 2 );
 105
 106     /* Windows does something truly hacky here.  If we're in passthrough mode
 107        and our rop is R2_NOP, then we output the string below.  This is used in
 108        Office 2k when inserting eps files */
 109     if (physDev->job.passthrough_state == passthrough_active && GetROP2(dev->hdc) == R2_NOP)
 110     {
 111         char buf[256];
 112
 113         sprintf(buf, "N %d %d %d %d B\n", rect.right - rect.left, rect.bottom - rect.top, rect.left, rect.top);
 114         write_spool(dev, buf, strlen(buf));
 115         physDev->job.passthrough_state = passthrough_had_rect;
 116         return TRUE;
 117     }
 118
 119     PSDRV_SetPen(dev);
 120
 121     PSDRV_SetClip(dev);
 122     PSDRV_WriteRectangle(dev, rect.left, rect.top, rect.right - rect.left,
 123                          rect.bottom - rect.top );
 124     PSDRV_Brush(dev,0);
 125     PSDRV_DrawLine(dev);
 126     PSDRV_ResetClip(dev);
 127     return TRUE;
 128 }
 129
 130
 131 /***********************************************************************
 132  *           PSDRV_RoundRect
 133  */
 134 BOOL CDECL PSDRV_RoundRect( PHYSDEV dev, INT left, INT top, INT right,
 135                             INT bottom, INT ell_width, INT ell_height )
 136 {
 137     RECT rect[2];
 138
 139     SetRect(&rect[0], left, top, right, bottom);
 140     SetRect(&rect[1], 0, 0, ell_width, ell_height);
 141     LPtoDP( dev->hdc, (POINT *)rect, 4 );
 142
 143     left   = rect[0].left;
 144     top    = rect[0].top;
 145     right  = rect[0].right;
 146     bottom = rect[0].bottom;
 147     if (left > right) { INT tmp = left; left = right; right = tmp; }
 148     if (top > bottom) { INT tmp = top; top = bottom; bottom = tmp; }
 149
 150     ell_width  = rect[1].right - rect[1].left;
 151     ell_height = rect[1].bottom - rect[1].top;
 152     if (ell_width > right - left) ell_width = right - left;
 153     if (ell_height > bottom - top) ell_height = bottom - top;
 154
 155     PSDRV_WriteSpool(dev, "%RoundRect\n",11);
 156     PSDRV_SetPen(dev);
 157
 158     PSDRV_SetClip(dev);
 159     PSDRV_WriteMoveTo( dev, left, top + ell_height/2 );
 160     PSDRV_WriteArc( dev, left + ell_width/2, top + ell_height/2, ell_width,
 161                     ell_height, 90.0, 180.0);
 162     PSDRV_WriteLineTo( dev, right - ell_width/2, top );
 163     PSDRV_WriteArc( dev, right - ell_width/2, top + ell_height/2, ell_width,
 164                     ell_height, 0.0, 90.0);
 165     PSDRV_WriteLineTo( dev, right, bottom - ell_height/2 );
 166     PSDRV_WriteArc( dev, right - ell_width/2, bottom - ell_height/2, ell_width,
 167                     ell_height, -90.0, 0.0);
 168     PSDRV_WriteLineTo( dev, right - ell_width/2, bottom);
 169     PSDRV_WriteArc( dev, left + ell_width/2, bottom - ell_height/2, ell_width,
 170                     ell_height, 180.0, -90.0);
 171     PSDRV_WriteClosePath( dev );
 172
 173     PSDRV_Brush(dev,0);
 174     PSDRV_DrawLine(dev);
 175     PSDRV_ResetClip(dev);
 176     return TRUE;
 177 }
 178
 179 /***********************************************************************
 180  *           PSDRV_DrawArc
 181  *
 182  * Does the work of Arc, Chord and Pie. lines is 0, 1 or 2 respectively.
 183  */
 184 static BOOL PSDRV_DrawArc( PHYSDEV dev, INT left, INT top,
 185                            INT right, INT bottom, INT xstart, INT ystart,
 186                            INT xend, INT yend, int lines )
 187 {
 188     INT x, y, h, w;
 189     double start_angle, end_angle, ratio;
 190     RECT rect;
 191     POINT start, end;
 192
 193     SetRect(&rect, left, top, right, bottom);
 194     LPtoDP( dev->hdc, (POINT *)&rect, 2 );
 195     start.x = xstart;
 196     start.y = ystart;
 197     end.x = xend;
 198     end.y = yend;
 199     LPtoDP( dev->hdc, &start, 1 );
 200     LPtoDP( dev->hdc, &end, 1 );
 201
 202     x = (rect.left + rect.right) / 2;
 203     y = (rect.top + rect.bottom) / 2;
 204     w = rect.right - rect.left;
 205     h = rect.bottom - rect.top;
 206
 207     if(w < 0) w = -w;
 208     if(h < 0) h = -h;
 209     ratio = ((double)w)/h;
 210
 211     /* angle is the angle after the rectangle is transformed to a square and is
 212        measured anticlockwise from the +ve x-axis */
 213
 214     start_angle = atan2((double)(y - start.y) * ratio, (double)(start.x - x));
 215     end_angle = atan2((double)(y - end.y) * ratio, (double)(end.x - x));
 216
 217     start_angle *= 180.0 / M_PI;
 218     end_angle *= 180.0 / M_PI;
 219
 220     PSDRV_WriteSpool(dev,"%DrawArc\n", 9);
 221     PSDRV_SetPen(dev);
 222
 223     PSDRV_SetClip(dev);
 224     if(lines == 2) /* pie */
 225         PSDRV_WriteMoveTo(dev, x, y);
 226     else
 227         PSDRV_WriteNewPath( dev );
 228
 229     PSDRV_WriteArc(dev, x, y, w, h, start_angle, end_angle);
 230     if(lines == 1 || lines == 2) { /* chord or pie */
 231         PSDRV_WriteClosePath(dev);
 232         PSDRV_Brush(dev,0);
 233     }
 234     PSDRV_DrawLine(dev);
 235     PSDRV_ResetClip(dev);
 236
 237     return TRUE;
 238 }
 239
 240
 241 /***********************************************************************
 242  *           PSDRV_Arc
 243  */
 244 BOOL CDECL PSDRV_Arc( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
 245                       INT xstart, INT ystart, INT xend, INT yend )
 246 {
 247     return PSDRV_DrawArc( dev, left, top, right, bottom, xstart, ystart, xend, yend, 0 );
 248 }
 249
 250 /***********************************************************************
 251  *           PSDRV_Chord
 252  */
 253 BOOL CDECL PSDRV_Chord( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
 254                         INT xstart, INT ystart, INT xend, INT yend )
 255 {
 256     return PSDRV_DrawArc( dev, left, top, right, bottom, xstart, ystart, xend, yend, 1 );
 257 }
 258
 259
 260 /***********************************************************************
 261  *           PSDRV_Pie
 262  */
 263 BOOL CDECL PSDRV_Pie( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
 264                       INT xstart, INT ystart, INT xend, INT yend )
 265 {
 266     return PSDRV_DrawArc( dev, left, top, right, bottom, xstart, ystart, xend, yend, 2 );
 267 }
 268
 269
 270 /***********************************************************************
 271  *           PSDRV_Ellipse
 272  */
 273 BOOL CDECL PSDRV_Ellipse( PHYSDEV dev, INT left, INT top, INT right, INT bottom)
 274 {
 275     INT x, y, w, h;
 276     RECT rect;
 277
 278     TRACE("%d %d - %d %d\n", left, top, right, bottom);
 279
 280     SetRect(&rect, left, top, right, bottom);
 281     LPtoDP( dev->hdc, (POINT *)&rect, 2 );
 282
 283     x = (rect.left + rect.right) / 2;
 284     y = (rect.top + rect.bottom) / 2;
 285     w = rect.right - rect.left;
 286     h = rect.bottom - rect.top;
 287
 288     PSDRV_WriteSpool(dev, "%Ellipse\n", 9);
 289     PSDRV_SetPen(dev);
 290
 291     PSDRV_SetClip(dev);
 292     PSDRV_WriteNewPath(dev);
 293     PSDRV_WriteArc(dev, x, y, w, h, 0.0, 360.0);
 294     PSDRV_WriteClosePath(dev);
 295     PSDRV_Brush(dev,0);
 296     PSDRV_DrawLine(dev);
 297     PSDRV_ResetClip(dev);
 298     return TRUE;
 299 }
 300
 301
 302 /***********************************************************************
 303  *           PSDRV_PolyPolyline
 304  */
 305 BOOL CDECL PSDRV_PolyPolyline( PHYSDEV dev, const POINT* pts, const DWORD* counts, DWORD polylines )
 306 {
 307     DWORD polyline, line, total;
 308     POINT *dev_pts, *pt;
 309
 310     TRACE("\n");
 311
 312     for (polyline = total = 0; polyline < polylines; polyline++) total += counts[polyline];
 313     if (!(dev_pts = HeapAlloc( GetProcessHeap(), 0, total * sizeof(*dev_pts) ))) return FALSE;
 314     memcpy( dev_pts, pts, total * sizeof(*dev_pts) );
 315     LPtoDP( dev->hdc, dev_pts, total );
 316
 317     pt = dev_pts;
 318
 319     PSDRV_WriteSpool(dev, "%PolyPolyline\n",14);
 320     PSDRV_SetPen(dev);
 321     PSDRV_SetClip(dev);
 322
 323     for(polyline = 0; polyline < polylines; polyline++) {
 324         PSDRV_WriteMoveTo(dev, pt->x, pt->y);
 325         pt++;
 326         for(line = 1; line < counts[polyline]; line++, pt++)
 327             PSDRV_WriteLineTo(dev, pt->x, pt->y);
 328     }
 329     HeapFree( GetProcessHeap(), 0, dev_pts );
 330
 331     PSDRV_DrawLine(dev);
 332     PSDRV_ResetClip(dev);
 333     return TRUE;
 334 }
 335
 336
 337 /***********************************************************************
 338  *           PSDRV_PolyPolygon
 339  */
 340 BOOL CDECL PSDRV_PolyPolygon( PHYSDEV dev, const POINT* pts, const INT* counts, UINT polygons )
 341 {
 342     DWORD polygon, total;
 343     INT line;
 344     POINT *dev_pts, *pt;
 345
 346     TRACE("\n");
 347
 348     for (polygon = total = 0; polygon < polygons; polygon++) total += counts[polygon];
 349     if (!(dev_pts = HeapAlloc( GetProcessHeap(), 0, total * sizeof(*dev_pts) ))) return FALSE;
 350     memcpy( dev_pts, pts, total * sizeof(*dev_pts) );
 351     LPtoDP( dev->hdc, dev_pts, total );
 352
 353     pt = dev_pts;
 354
 355     PSDRV_WriteSpool(dev, "%PolyPolygon\n",13);
 356     PSDRV_SetPen(dev);
 357     PSDRV_SetClip(dev);
 358
 359     for(polygon = 0; polygon < polygons; polygon++) {
 360         PSDRV_WriteMoveTo(dev, pt->x, pt->y);
 361         pt++;
 362         for(line = 1; line < counts[polygon]; line++, pt++)
 363             PSDRV_WriteLineTo(dev, pt->x, pt->y);
 364         PSDRV_WriteClosePath(dev);
 365     }
 366     HeapFree( GetProcessHeap(), 0, dev_pts );
 367
 368     if(GetPolyFillMode( dev->hdc ) == ALTERNATE)
 369         PSDRV_Brush(dev, 1);
 370     else /* WINDING */
 371         PSDRV_Brush(dev, 0);
 372
 373     PSDRV_DrawLine(dev);
 374     PSDRV_ResetClip(dev);
 375     return TRUE;
 376 }
 377
 378
 379 /***********************************************************************
 380  *           PSDRV_PolyBezier
 381  */
 382 BOOL CDECL PSDRV_PolyBezier( PHYSDEV dev, const POINT *pts, DWORD count )
 383 {
 384     DWORD i;
 385     POINT *dev_pts;
 386
 387     TRACE("\n");
 388
 389     if (!(dev_pts = HeapAlloc( GetProcessHeap(), 0, count * sizeof(*dev_pts) ))) return FALSE;
 390     memcpy( dev_pts, pts, count * sizeof(*dev_pts) );
 391     LPtoDP( dev->hdc, dev_pts, count );
 392
 393     PSDRV_WriteSpool(dev, "%PolyBezier\n",12);
 394     PSDRV_SetPen(dev);
 395     PSDRV_SetClip(dev);
 396     PSDRV_WriteMoveTo(dev, dev_pts[0].x, dev_pts[0].y );
 397     for (i = 1; i < count; i += 3) PSDRV_WriteCurveTo( dev, dev_pts + i );
 398     PSDRV_DrawLine(dev);
 399     PSDRV_ResetClip(dev);
 400     HeapFree( GetProcessHeap(), 0, dev_pts );
 401     return TRUE;
 402 }
 403
 404
 405 /***********************************************************************
 406  *           PSDRV_PolyBezierTo
 407  */
 408 BOOL CDECL PSDRV_PolyBezierTo( PHYSDEV dev, const POINT *pts, DWORD count )
 409 {
 410     DWORD i;
 411     POINT *dev_pts;
 412
 413     TRACE("\n");
 414
 415     count++;  /* add initial position */
 416     if (!(dev_pts = HeapAlloc( GetProcessHeap(), 0, count * sizeof(*dev_pts) ))) return FALSE;
 417     GetCurrentPositionEx( dev->hdc, dev_pts );
 418     memcpy( dev_pts + 1, pts, (count - 1) * sizeof(*dev_pts) );
 419     LPtoDP( dev->hdc, dev_pts, count );
 420
 421     PSDRV_WriteSpool(dev, "%PolyBezier\n",12);
 422     PSDRV_SetPen(dev);
 423     PSDRV_SetClip(dev);
 424     PSDRV_WriteMoveTo(dev, dev_pts[0].x, dev_pts[0].y );
 425     for (i = 1; i < count; i += 3) PSDRV_WriteCurveTo( dev, dev_pts + i );
 426     PSDRV_DrawLine(dev);
 427     PSDRV_ResetClip(dev);
 428     HeapFree( GetProcessHeap(), 0, dev_pts );
 429     return TRUE;
 430 }
 431
 432
 433 /***********************************************************************
 434  *           PSDRV_SetPixel
 435  */
 436 COLORREF CDECL PSDRV_SetPixel( PHYSDEV dev, INT x, INT y, COLORREF color )
 437 {
 438     PSCOLOR pscolor;
 439     POINT pt;
 440
 441     pt.x = x;
 442     pt.y = y;
 443     LPtoDP( dev->hdc, &pt, 1 );
 444
 445     PSDRV_SetClip(dev);
 446     /* we bracket the setcolor in gsave/grestore so that we don't trash
 447        the current pen colour */
 448     PSDRV_WriteGSave(dev);
 449     PSDRV_WriteRectangle( dev, pt.x, pt.y, 0, 0 );
 450     PSDRV_CreateColor( dev, &pscolor, color );
 451     PSDRV_WriteSetColor( dev, &pscolor );
 452     PSDRV_WriteFill( dev );
 453     PSDRV_WriteGRestore(dev);
 454     PSDRV_ResetClip(dev);
 455     return color;
 456 }
 457
 458 /***********************************************************************
 459  *           PSDRV_PaintRgn
 460  */
 461 BOOL CDECL PSDRV_PaintRgn( PHYSDEV dev, HRGN hrgn )
 462 {
 463     RGNDATA *rgndata = NULL;
 464     RECT *pRect;
 465     DWORD size, i;
 466
 467     TRACE("hdc=%p\n", dev->hdc);
 468
 469     size = GetRegionData(hrgn, 0, NULL);
 470     rgndata = HeapAlloc( GetProcessHeap(), 0, size );
 471     if(!rgndata) {
 472         ERR("Can't allocate buffer\n");
 473         return FALSE;
 474     }
 475
 476     GetRegionData(hrgn, size, rgndata);
 477     if (rgndata->rdh.nCount == 0)
 478         goto end;
 479
 480     LPtoDP(dev->hdc, (POINT*)rgndata->Buffer, rgndata->rdh.nCount * 2);
 481
 482     PSDRV_SetClip(dev);
 483     for(i = 0, pRect = (RECT*)rgndata->Buffer; i < rgndata->rdh.nCount; i++, pRect++)
 484         PSDRV_WriteRectangle(dev, pRect->left, pRect->top, pRect->right - pRect->left, pRect->bottom - pRect->top);
 485
 486     PSDRV_Brush(dev, 0);
 487     PSDRV_WriteNewPath(dev);
 488     PSDRV_ResetClip(dev);
 489
 490  end:
 491     HeapFree(GetProcessHeap(), 0, rgndata);
 492     return TRUE;
 493 }
 494
 495 static BOOL paint_path( PHYSDEV dev, BOOL stroke, BOOL fill )
 496 {
 497     POINT *points;
 498     BYTE *types;
 499     BOOL ret = FALSE;
 500     int i, size = GetPath( dev->hdc, NULL, NULL, 0 );
 501
 502     if (size == -1) return FALSE;
 503     if (!size)
 504     {
 505         AbortPath( dev->hdc );
 506         return TRUE;
 507     }
 508     points = HeapAlloc( GetProcessHeap(), 0, size * sizeof(*points) );
 509     types = HeapAlloc( GetProcessHeap(), 0, size * sizeof(*types) );
 510     if (!points || !types) goto done;
 511     if (GetPath( dev->hdc, points, types, size ) == -1) goto done;
 512     LPtoDP( dev->hdc, points, size );
 513
 514     if (stroke) PSDRV_SetPen(dev);
 515     PSDRV_SetClip(dev);
 516     for (i = 0; i < size; i++)
 517     {
 518         switch (types[i])
 519         {
 520         case PT_MOVETO:
 521             PSDRV_WriteMoveTo( dev, points[i].x, points[i].y );
 522             break;
 523         case PT_LINETO:
 524         case PT_LINETO | PT_CLOSEFIGURE:
 525             PSDRV_WriteLineTo( dev, points[i].x, points[i].y );
 526             if (types[i] & PT_CLOSEFIGURE) PSDRV_WriteClosePath( dev );
 527             break;
 528         case PT_BEZIERTO:
 529         case PT_BEZIERTO | PT_CLOSEFIGURE:
 530             PSDRV_WriteCurveTo( dev, points + i );
 531             if (types[i] & PT_CLOSEFIGURE) PSDRV_WriteClosePath( dev );
 532             i += 2;
 533             break;
 534         }
 535     }
 536     if (fill) PSDRV_Brush( dev, GetPolyFillMode(dev->hdc) == ALTERNATE );
 537     if (stroke) PSDRV_DrawLine(dev);
 538     else PSDRV_WriteNewPath(dev);
 539     PSDRV_ResetClip(dev);
 540     AbortPath( dev->hdc );
 541
 542 done:
 543     HeapFree( GetProcessHeap(), 0, points );
 544     HeapFree( GetProcessHeap(), 0, types );
 545     return ret;
 546 }
 547
 548 /***********************************************************************
 549  *           PSDRV_FillPath
 550  */
 551 BOOL CDECL PSDRV_FillPath( PHYSDEV dev )
 552 {
 553     return paint_path( dev, FALSE, TRUE );
 554 }
 555
 556 /***********************************************************************
 557  *           PSDRV_StrokeAndFillPath
 558  */
 559 BOOL CDECL PSDRV_StrokeAndFillPath( PHYSDEV dev )
 560 {
 561     return paint_path( dev, TRUE, TRUE );
 562 }
 563
 564 /***********************************************************************
 565  *           PSDRV_StrokePath
 566  */
 567 BOOL CDECL PSDRV_StrokePath( PHYSDEV dev )
 568 {
 569     return paint_path( dev, TRUE, FALSE );
 570 }