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 "config.h"
  22
  23 #include <stdarg.h>
  24 #include <stdio.h>
  25 #include <string.h>
  26 #include <math.h>
  27 #if defined(HAVE_FLOAT_H)
  28 # include <float.h>
  29 #endif
  30 #if !defined(PI)
  31 # define PI M_PI
  32 #endif
  33 #include "windef.h"
  34 #include "winbase.h"
  35 #include "winuser.h"
  36 #include "psdrv.h"
  37 #include "wine/debug.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(psdrv);
  40
  41 /***********************************************************************
  42  *           PSDRV_XWStoDS
  43  *
  44  * Performs a world-to-viewport transformation on the specified width.
  45  */
  46 INT PSDRV_XWStoDS( PHYSDEV dev, INT width )
  47 {
  48     POINT pt[2];
  49
  50     pt[0].x = 0;
  51     pt[0].y = 0;
  52     pt[1].x = width;
  53     pt[1].y = 0;
  54     LPtoDP( dev->hdc, pt, 2 );
  55     return pt[1].x - pt[0].x;
  56 }
  57
  58 /***********************************************************************
  59  *           PSDRV_DrawLine
  60  */
  61 static void PSDRV_DrawLine( PHYSDEV dev )
  62 {
  63     PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
  64
  65     if(physDev->pathdepth)
  66         return;
  67
  68     if (physDev->pen.style == PS_NULL)
  69         PSDRV_WriteNewPath(dev);
  70     else
  71         PSDRV_WriteStroke(dev);
  72 }
  73
  74 /***********************************************************************
  75  *           PSDRV_LineTo
  76  */
  77 BOOL PSDRV_LineTo(PHYSDEV dev, INT x, INT y)
  78 {
  79     POINT pt[2];
  80
  81     TRACE("%d %d\n", x, y);
  82
  83     GetCurrentPositionEx( dev->hdc, pt );
  84     pt[1].x = x;
  85     pt[1].y = y;
  86     LPtoDP( dev->hdc, pt, 2 );
  87
  88     PSDRV_SetPen(dev);
  89
  90     PSDRV_SetClip(dev);
  91     PSDRV_WriteMoveTo(dev, pt[0].x, pt[0].y );
  92     PSDRV_WriteLineTo(dev, pt[1].x, pt[1].y );
  93     PSDRV_DrawLine(dev);
  94     PSDRV_ResetClip(dev);
  95
  96     return TRUE;
  97 }
  98
  99
 100 /***********************************************************************
 101  *           PSDRV_Rectangle
 102  */
 103 BOOL PSDRV_Rectangle( PHYSDEV dev, INT left, INT top, INT right, INT bottom )
 104 {
 105     PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
 106     RECT rect;
 107
 108     TRACE("%d %d - %d %d\n", left, top, right, bottom);
 109
 110     SetRect(&rect, left, top, right, bottom);
 111     LPtoDP( dev->hdc, (POINT *)&rect, 2 );
 112
 113     /* Windows does something truly hacky here.  If we're in passthrough mode
 114        and our rop is R2_NOP, then we output the string below.  This is used in
 115        Office 2k when inserting eps files */
 116     if(physDev->job.in_passthrough && !physDev->job.had_passthrough_rect && GetROP2(dev->hdc) == R2_NOP) {
 117       char buf[256];
 118       sprintf(buf, "N %d %d %d %d B\n", rect.right - rect.left, rect.bottom - rect.top, rect.left, rect.top);
 119       write_spool(dev, buf, strlen(buf));
 120       physDev->job.had_passthrough_rect = TRUE;
 121       return TRUE;
 122     }
 123
 124     PSDRV_SetPen(dev);
 125
 126     PSDRV_SetClip(dev);
 127     PSDRV_WriteRectangle(dev, rect.left, rect.top, rect.right - rect.left,
 128                          rect.bottom - rect.top );
 129     PSDRV_Brush(dev,0);
 130     PSDRV_DrawLine(dev);
 131     PSDRV_ResetClip(dev);
 132     return TRUE;
 133 }
 134
 135
 136 /***********************************************************************
 137  *           PSDRV_RoundRect
 138  */
 139 BOOL PSDRV_RoundRect( PHYSDEV dev, INT left, INT top, INT right,
 140                       INT bottom, INT ell_width, INT ell_height )
 141 {
 142     RECT rect[2];
 143
 144     SetRect(&rect[0], left, top, right, bottom);
 145     SetRect(&rect[1], 0, 0, ell_width, ell_height);
 146     LPtoDP( dev->hdc, (POINT *)rect, 4 );
 147
 148     left   = rect[0].left;
 149     top    = rect[0].top;
 150     right  = rect[0].right;
 151     bottom = rect[0].bottom;
 152     if (left > right) { INT tmp = left; left = right; right = tmp; }
 153     if (top > bottom) { INT tmp = top; top = bottom; bottom = tmp; }
 154
 155     ell_width  = rect[1].right - rect[1].left;
 156     ell_height = rect[1].bottom - rect[1].top;
 157     if (ell_width > right - left) ell_width = right - left;
 158     if (ell_height > bottom - top) ell_height = bottom - top;
 159
 160     PSDRV_WriteSpool(dev, "%RoundRect\n",11);
 161     PSDRV_SetPen(dev);
 162
 163     PSDRV_SetClip(dev);
 164     PSDRV_WriteMoveTo( dev, left, top + ell_height/2 );
 165     PSDRV_WriteArc( dev, left + ell_width/2, top + ell_height/2, ell_width,
 166                     ell_height, 90.0, 180.0);
 167     PSDRV_WriteLineTo( dev, right - ell_width/2, top );
 168     PSDRV_WriteArc( dev, right - ell_width/2, top + ell_height/2, ell_width,
 169                     ell_height, 0.0, 90.0);
 170     PSDRV_WriteLineTo( dev, right, bottom - ell_height/2 );
 171     PSDRV_WriteArc( dev, right - ell_width/2, bottom - ell_height/2, ell_width,
 172                     ell_height, -90.0, 0.0);
 173     PSDRV_WriteLineTo( dev, right - ell_width/2, bottom);
 174     PSDRV_WriteArc( dev, left + ell_width/2, bottom - ell_height/2, ell_width,
 175                     ell_height, 180.0, -90.0);
 176     PSDRV_WriteClosePath( dev );
 177
 178     PSDRV_Brush(dev,0);
 179     PSDRV_DrawLine(dev);
 180     PSDRV_ResetClip(dev);
 181     return TRUE;
 182 }
 183
 184 /***********************************************************************
 185  *           PSDRV_DrawArc
 186  *
 187  * Does the work of Arc, Chord and Pie. lines is 0, 1 or 2 respectively.
 188  */
 189 static BOOL PSDRV_DrawArc( PHYSDEV dev, INT left, INT top,
 190                            INT right, INT bottom, INT xstart, INT ystart,
 191                            INT xend, INT yend, int lines )
 192 {
 193     INT x, y, h, w;
 194     double start_angle, end_angle, ratio;
 195     RECT rect;
 196     POINT start, end;
 197
 198     SetRect(&rect, left, top, right, bottom);
 199     LPtoDP( dev->hdc, (POINT *)&rect, 2 );
 200     start.x = xstart;
 201     start.y = ystart;
 202     end.x = xend;
 203     end.y = yend;
 204     LPtoDP( dev->hdc, &start, 1 );
 205     LPtoDP( dev->hdc, &end, 1 );
 206
 207     x = (rect.left + rect.right) / 2;
 208     y = (rect.top + rect.bottom) / 2;
 209     w = rect.right - rect.left;
 210     h = rect.bottom - rect.top;
 211
 212     if(w < 0) w = -w;
 213     if(h < 0) h = -h;
 214     ratio = ((double)w)/h;
 215
 216     /* angle is the angle after the rectangle is transformed to a square and is
 217        measured anticlockwise from the +ve x-axis */
 218
 219     start_angle = atan2((double)(y - start.y) * ratio, (double)(start.x - x));
 220     end_angle = atan2((double)(y - end.y) * ratio, (double)(end.x - x));
 221
 222     start_angle *= 180.0 / PI;
 223     end_angle *= 180.0 / PI;
 224
 225     PSDRV_WriteSpool(dev,"%DrawArc\n", 9);
 226     PSDRV_SetPen(dev);
 227
 228     PSDRV_SetClip(dev);
 229     if(lines == 2) /* pie */
 230         PSDRV_WriteMoveTo(dev, x, y);
 231     else
 232         PSDRV_WriteNewPath( dev );
 233
 234     PSDRV_WriteArc(dev, x, y, w, h, start_angle, end_angle);
 235     if(lines == 1 || lines == 2) { /* chord or pie */
 236         PSDRV_WriteClosePath(dev);
 237         PSDRV_Brush(dev,0);
 238     }
 239     PSDRV_DrawLine(dev);
 240     PSDRV_ResetClip(dev);
 241
 242     return TRUE;
 243 }
 244
 245
 246 /***********************************************************************
 247  *           PSDRV_Arc
 248  */
 249 BOOL PSDRV_Arc( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
 250                 INT xstart, INT ystart, INT xend, INT yend )
 251 {
 252     return PSDRV_DrawArc( dev, left, top, right, bottom, xstart, ystart, xend, yend, 0 );
 253 }
 254
 255 /***********************************************************************
 256  *           PSDRV_Chord
 257  */
 258 BOOL PSDRV_Chord( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
 259                   INT xstart, INT ystart, INT xend, INT yend )
 260 {
 261     return PSDRV_DrawArc( dev, left, top, right, bottom, xstart, ystart, xend, yend, 1 );
 262 }
 263
 264
 265 /***********************************************************************
 266  *           PSDRV_Pie
 267  */
 268 BOOL PSDRV_Pie( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
 269                 INT xstart, INT ystart, INT xend, INT yend )
 270 {
 271     return PSDRV_DrawArc( dev, left, top, right, bottom, xstart, ystart, xend, yend, 2 );
 272 }
 273
 274
 275 /***********************************************************************
 276  *           PSDRV_Ellipse
 277  */
 278 BOOL PSDRV_Ellipse( PHYSDEV dev, INT left, INT top, INT right, INT bottom)
 279 {
 280     INT x, y, w, h;
 281     RECT rect;
 282
 283     TRACE("%d %d - %d %d\n", left, top, right, bottom);
 284
 285     SetRect(&rect, left, top, right, bottom);
 286     LPtoDP( dev->hdc, (POINT *)&rect, 2 );
 287
 288     x = (rect.left + rect.right) / 2;
 289     y = (rect.top + rect.bottom) / 2;
 290     w = rect.right - rect.left;
 291     h = rect.bottom - rect.top;
 292
 293     PSDRV_WriteSpool(dev, "%Ellipse\n", 9);
 294     PSDRV_SetPen(dev);
 295
 296     PSDRV_SetClip(dev);
 297     PSDRV_WriteNewPath(dev);
 298     PSDRV_WriteArc(dev, x, y, w, h, 0.0, 360.0);
 299     PSDRV_WriteClosePath(dev);
 300     PSDRV_Brush(dev,0);
 301     PSDRV_DrawLine(dev);
 302     PSDRV_ResetClip(dev);
 303     return TRUE;
 304 }
 305
 306
 307 /***********************************************************************
 308  *           PSDRV_PolyPolyline
 309  */
 310 BOOL PSDRV_PolyPolyline( PHYSDEV dev, const POINT* pts, const DWORD* counts, DWORD polylines )
 311 {
 312     DWORD polyline, line, total;
 313     POINT *dev_pts, *pt;
 314
 315     TRACE("\n");
 316
 317     for (polyline = total = 0; polyline < polylines; polyline++) total += counts[polyline];
 318     if (!(dev_pts = HeapAlloc( GetProcessHeap(), 0, total * sizeof(*dev_pts) ))) return FALSE;
 319     memcpy( dev_pts, pts, total * sizeof(*dev_pts) );
 320     LPtoDP( dev->hdc, dev_pts, total );
 321
 322     pt = dev_pts;
 323
 324     PSDRV_WriteSpool(dev, "%PolyPolyline\n",14);
 325     PSDRV_SetPen(dev);
 326     PSDRV_SetClip(dev);
 327
 328     for(polyline = 0; polyline < polylines; polyline++) {
 329         PSDRV_WriteMoveTo(dev, pt->x, pt->y);
 330         pt++;
 331         for(line = 1; line < counts[polyline]; line++, pt++)
 332             PSDRV_WriteLineTo(dev, pt->x, pt->y);
 333     }
 334     HeapFree( GetProcessHeap(), 0, dev_pts );
 335
 336     PSDRV_DrawLine(dev);
 337     PSDRV_ResetClip(dev);
 338     return TRUE;
 339 }
 340
 341
 342 /***********************************************************************
 343  *           PSDRV_PolyPolygon
 344  */
 345 BOOL PSDRV_PolyPolygon( PHYSDEV dev, const POINT* pts, const INT* counts, UINT polygons )
 346 {
 347     DWORD polygon, total;
 348     INT line;
 349     POINT *dev_pts, *pt;
 350
 351     TRACE("\n");
 352
 353     for (polygon = total = 0; polygon < polygons; polygon++) total += counts[polygon];
 354     if (!(dev_pts = HeapAlloc( GetProcessHeap(), 0, total * sizeof(*dev_pts) ))) return FALSE;
 355     memcpy( dev_pts, pts, total * sizeof(*dev_pts) );
 356     LPtoDP( dev->hdc, dev_pts, total );
 357
 358     pt = dev_pts;
 359
 360     PSDRV_WriteSpool(dev, "%PolyPolygon\n",13);
 361     PSDRV_SetPen(dev);
 362     PSDRV_SetClip(dev);
 363
 364     for(polygon = 0; polygon < polygons; polygon++) {
 365         PSDRV_WriteMoveTo(dev, pt->x, pt->y);
 366         pt++;
 367         for(line = 1; line < counts[polygon]; line++, pt++)
 368             PSDRV_WriteLineTo(dev, pt->x, pt->y);
 369         PSDRV_WriteClosePath(dev);
 370     }
 371     HeapFree( GetProcessHeap(), 0, dev_pts );
 372
 373     if(GetPolyFillMode( dev->hdc ) == ALTERNATE)
 374         PSDRV_Brush(dev, 1);
 375     else /* WINDING */
 376         PSDRV_Brush(dev, 0);
 377
 378     PSDRV_DrawLine(dev);
 379     PSDRV_ResetClip(dev);
 380     return TRUE;
 381 }
 382
 383
 384 /***********************************************************************
 385  *           PSDRV_PolyBezier
 386  */
 387 BOOL PSDRV_PolyBezier( PHYSDEV dev, const POINT *pts, DWORD count )
 388 {
 389     DWORD i;
 390     POINT *dev_pts;
 391
 392     TRACE("\n");
 393
 394     if (!(dev_pts = HeapAlloc( GetProcessHeap(), 0, count * sizeof(*dev_pts) ))) return FALSE;
 395     memcpy( dev_pts, pts, count * sizeof(*dev_pts) );
 396     LPtoDP( dev->hdc, dev_pts, count );
 397
 398     PSDRV_WriteSpool(dev, "%PolyBezier\n",12);
 399     PSDRV_SetPen(dev);
 400     PSDRV_SetClip(dev);
 401     PSDRV_WriteMoveTo(dev, dev_pts[0].x, dev_pts[0].y );
 402     for (i = 1; i < count; i += 3) PSDRV_WriteCurveTo( dev, dev_pts + i );
 403     PSDRV_DrawLine(dev);
 404     PSDRV_ResetClip(dev);
 405     HeapFree( GetProcessHeap(), 0, dev_pts );
 406     return TRUE;
 407 }
 408
 409
 410 /***********************************************************************
 411  *           PSDRV_PolyBezierTo
 412  */
 413 BOOL PSDRV_PolyBezierTo( PHYSDEV dev, const POINT *pts, DWORD count )
 414 {
 415     DWORD i;
 416     POINT *dev_pts;
 417
 418     TRACE("\n");
 419
 420     count++;  /* add initial position */
 421     if (!(dev_pts = HeapAlloc( GetProcessHeap(), 0, count * sizeof(*dev_pts) ))) return FALSE;
 422     GetCurrentPositionEx( dev->hdc, dev_pts );
 423     memcpy( dev_pts + 1, pts, (count - 1) * sizeof(*dev_pts) );
 424     LPtoDP( dev->hdc, dev_pts, count );
 425
 426     PSDRV_WriteSpool(dev, "%PolyBezier\n",12);
 427     PSDRV_SetPen(dev);
 428     PSDRV_SetClip(dev);
 429     PSDRV_WriteMoveTo(dev, dev_pts[0].x, dev_pts[0].y );
 430     for (i = 1; i < count; i += 3) PSDRV_WriteCurveTo( dev, dev_pts + i );
 431     PSDRV_DrawLine(dev);
 432     PSDRV_ResetClip(dev);
 433     HeapFree( GetProcessHeap(), 0, dev_pts );
 434     return TRUE;
 435 }
 436
 437
 438 /***********************************************************************
 439  *           PSDRV_SetPixel
 440  */
 441 COLORREF PSDRV_SetPixel( PHYSDEV dev, INT x, INT y, COLORREF color )
 442 {
 443     PSCOLOR pscolor;
 444     POINT pt;
 445
 446     pt.x = x;
 447     pt.y = y;
 448     LPtoDP( dev->hdc, &pt, 1 );
 449
 450     PSDRV_SetClip(dev);
 451     /* we bracket the setcolor in gsave/grestore so that we don't trash
 452        the current pen colour */
 453     PSDRV_WriteGSave(dev);
 454     PSDRV_WriteRectangle( dev, pt.x, pt.y, 0, 0 );
 455     PSDRV_CreateColor( dev, &pscolor, color );
 456     PSDRV_WriteSetColor( dev, &pscolor );
 457     PSDRV_WriteFill( dev );
 458     PSDRV_WriteGRestore(dev);
 459     PSDRV_ResetClip(dev);
 460     return color;
 461 }
 462
 463 /***********************************************************************
 464  *           PSDRV_PaintRgn
 465  */
 466 BOOL PSDRV_PaintRgn( PHYSDEV dev, HRGN hrgn )
 467 {
 468     RGNDATA *rgndata = NULL;
 469     RECT *pRect;
 470     DWORD size, i;
 471
 472     TRACE("hdc=%p\n", dev->hdc);
 473
 474     size = GetRegionData(hrgn, 0, NULL);
 475     rgndata = HeapAlloc( GetProcessHeap(), 0, size );
 476     if(!rgndata) {
 477         ERR("Can't allocate buffer\n");
 478         return FALSE;
 479     }
 480
 481     GetRegionData(hrgn, size, rgndata);
 482     if (rgndata->rdh.nCount == 0)
 483         goto end;
 484
 485     LPtoDP(dev->hdc, (POINT*)rgndata->Buffer, rgndata->rdh.nCount * 2);
 486
 487     PSDRV_SetClip(dev);
 488     for(i = 0, pRect = (RECT*)rgndata->Buffer; i < rgndata->rdh.nCount; i++, pRect++)
 489         PSDRV_WriteRectangle(dev, pRect->left, pRect->top, pRect->right - pRect->left, pRect->bottom - pRect->top);
 490
 491     PSDRV_Brush(dev, 0);
 492     PSDRV_WriteNewPath(dev);
 493     PSDRV_ResetClip(dev);
 494
 495  end:
 496     HeapFree(GetProcessHeap(), 0, rgndata);
 497     return TRUE;
 498 }
 499
 500 static BOOL paint_path( PHYSDEV dev, BOOL stroke, BOOL fill )
 501 {
 502     POINT *points;
 503     BYTE *types;
 504     BOOL ret = FALSE;
 505     int i, size = GetPath( dev->hdc, NULL, NULL, 0 );
 506
 507     if (size == -1) return FALSE;
 508     if (!size)
 509     {
 510         AbortPath( dev->hdc );
 511         return TRUE;
 512     }
 513     points = HeapAlloc( GetProcessHeap(), 0, size * sizeof(*points) );
 514     types = HeapAlloc( GetProcessHeap(), 0, size * sizeof(*types) );
 515     if (!points || !types) goto done;
 516     if (GetPath( dev->hdc, points, types, size ) == -1) goto done;
 517     LPtoDP( dev->hdc, points, size );
 518
 519     if (stroke) PSDRV_SetPen(dev);
 520     PSDRV_SetClip(dev);
 521     for (i = 0; i < size; i++)
 522     {
 523         switch (types[i])
 524         {
 525         case PT_MOVETO:
 526             PSDRV_WriteMoveTo( dev, points[i].x, points[i].y );
 527             break;
 528         case PT_LINETO:
 529         case PT_LINETO | PT_CLOSEFIGURE:
 530             PSDRV_WriteLineTo( dev, points[i].x, points[i].y );
 531             if (types[i] & PT_CLOSEFIGURE) PSDRV_WriteClosePath( dev );
 532             break;
 533         case PT_BEZIERTO:
 534         case PT_BEZIERTO | PT_CLOSEFIGURE:
 535             PSDRV_WriteCurveTo( dev, points + i );
 536             if (types[i] & PT_CLOSEFIGURE) PSDRV_WriteClosePath( dev );
 537             i += 2;
 538             break;
 539         }
 540     }
 541     if (fill) PSDRV_Brush( dev, GetPolyFillMode(dev->hdc) == ALTERNATE );
 542     if (stroke) PSDRV_DrawLine(dev);
 543     else PSDRV_WriteNewPath(dev);
 544     PSDRV_ResetClip(dev);
 545     AbortPath( dev->hdc );
 546
 547 done:
 548     HeapFree( GetProcessHeap(), 0, points );
 549     HeapFree( GetProcessHeap(), 0, types );
 550     return ret;
 551 }
 552
 553 /***********************************************************************
 554  *           PSDRV_FillPath
 555  */
 556 BOOL PSDRV_FillPath( PHYSDEV dev )
 557 {
 558     return paint_path( dev, FALSE, TRUE );
 559 }
 560
 561 /***********************************************************************
 562  *           PSDRV_StrokeAndFillPath
 563  */
 564 BOOL PSDRV_StrokeAndFillPath( PHYSDEV dev )
 565 {
 566     return paint_path( dev, TRUE, TRUE );
 567 }
 568
 569 /***********************************************************************
 570  *           PSDRV_StrokePath
 571  */
 572 BOOL PSDRV_StrokePath( PHYSDEV dev )
 573 {
 574     return paint_path( dev, TRUE, FALSE );
 575 }