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 <stdio.h>
  24 #include <string.h>
  25 #include <math.h>
  26 #if defined(HAVE_FLOAT_H)
  27 # include <float.h>
  28 #endif
  29 #if !defined(PI)
  30 # define PI M_PI
  31 #endif
  32 #include "psdrv.h"
  33 #include "wine/debug.h"
  34 #include "winspool.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(psdrv);
  37
  38 /***********************************************************************
  39  *           PSDRV_XWStoDS
  40  *
  41  * Performs a world-to-viewport transformation on the specified width.
  42  */
  43 INT PSDRV_XWStoDS( PSDRV_PDEVICE *physDev, INT width )
  44 {
  45     POINT pt[2];
  46
  47     pt[0].x = 0;
  48     pt[0].y = 0;
  49     pt[1].x = width;
  50     pt[1].y = 0;
  51     LPtoDP( physDev->hdc, pt, 2 );
  52     return pt[1].x - pt[0].x;
  53 }
  54
  55 /***********************************************************************
  56  *           PSDRV_YWStoDS
  57  *
  58  * Performs a world-to-viewport transformation on the specified height.
  59  */
  60 INT PSDRV_YWStoDS( PSDRV_PDEVICE *physDev, INT height )
  61 {
  62     POINT pt[2];
  63
  64     pt[0].x = 0;
  65     pt[0].y = 0;
  66     pt[1].x = 0;
  67     pt[1].y = height;
  68     LPtoDP( physDev->hdc, pt, 2 );
  69     return pt[1].y - pt[0].y;
  70 }
  71
  72 /***********************************************************************
  73  *           PSDRV_DrawLine
  74  */
  75 static void PSDRV_DrawLine( PSDRV_PDEVICE *physDev )
  76 {
  77     if(physDev->pathdepth)
  78         return;
  79
  80     if (physDev->pen.style == PS_NULL)
  81         PSDRV_WriteNewPath(physDev);
  82     else
  83         PSDRV_WriteStroke(physDev);
  84 }
  85
  86 /***********************************************************************
  87  *           PSDRV_LineTo
  88  */
  89 BOOL PSDRV_LineTo(PSDRV_PDEVICE *physDev, INT x, INT y)
  90 {
  91     POINT pt[2];
  92
  93     TRACE("%d %d\n", x, y);
  94
  95     GetCurrentPositionEx( physDev->hdc, pt );
  96     pt[1].x = x;
  97     pt[1].y = y;
  98     LPtoDP( physDev->hdc, pt, 2 );
  99
 100     PSDRV_SetPen(physDev);
 101
 102     PSDRV_SetClip(physDev);
 103     PSDRV_WriteMoveTo(physDev, pt[0].x, pt[0].y );
 104     PSDRV_WriteLineTo(physDev, pt[1].x, pt[1].y );
 105     PSDRV_DrawLine(physDev);
 106     PSDRV_ResetClip(physDev);
 107
 108     return TRUE;
 109 }
 110
 111
 112 /***********************************************************************
 113  *           PSDRV_Rectangle
 114  */
 115 BOOL PSDRV_Rectangle( PSDRV_PDEVICE *physDev, INT left, INT top, INT right, INT bottom )
 116 {
 117     RECT rect;
 118
 119     TRACE("%d %d - %d %d\n", left, top, right, bottom);
 120
 121     rect.left = left;
 122     rect.top = top;
 123     rect.right = right;
 124     rect.bottom = bottom;
 125     LPtoDP( physDev->hdc, (POINT *)&rect, 2 );
 126
 127     /* Windows does something truly hacky here.  If we're in passthrough mode
 128        and our rop is R2_NOP, then we output the string below.  This is used in
 129        Office 2k when inserting eps files */
 130     if(physDev->job.in_passthrough && !physDev->job.had_passthrough_rect && GetROP2(physDev->hdc) == R2_NOP) {
 131       char buf[256];
 132       sprintf(buf, "N %d %d %d %d B\n", rect.right - rect.left, rect.bottom - rect.top, rect.left, rect.top);
 133       WriteSpool16(physDev->job.hJob, buf, strlen(buf));
 134       physDev->job.had_passthrough_rect = TRUE;
 135       return TRUE;
 136     }
 137
 138     PSDRV_SetPen(physDev);
 139
 140     PSDRV_SetClip(physDev);
 141     PSDRV_WriteRectangle(physDev, rect.left, rect.top, rect.right - rect.left,
 142                          rect.bottom - rect.top );
 143     PSDRV_Brush(physDev,0);
 144     PSDRV_DrawLine(physDev);
 145     PSDRV_ResetClip(physDev);
 146     return TRUE;
 147 }
 148
 149
 150 /***********************************************************************
 151  *           PSDRV_RoundRect
 152  */
 153 BOOL PSDRV_RoundRect( PSDRV_PDEVICE *physDev, INT left, INT top, INT right,
 154                       INT bottom, INT ell_width, INT ell_height )
 155 {
 156     RECT rect[2];
 157
 158     rect[0].left   = left;
 159     rect[0].top    = top;
 160     rect[0].right  = right;
 161     rect[0].bottom = bottom;
 162     rect[1].left   = 0;
 163     rect[1].top    = 0;
 164     rect[1].right  = ell_width;
 165     rect[1].bottom = ell_height;
 166     LPtoDP( physDev->hdc, (POINT *)rect, 4 );
 167
 168     left   = rect[0].left;
 169     top    = rect[0].top;
 170     right  = rect[0].right;
 171     bottom = rect[0].bottom;
 172     if (left > right) { INT tmp = left; left = right; right = tmp; }
 173     if (top > bottom) { INT tmp = top; top = bottom; bottom = tmp; }
 174
 175     ell_width  = rect[1].right - rect[1].left;
 176     ell_height = rect[1].bottom - rect[1].top;
 177     if (ell_width > right - left) ell_width = right - left;
 178     if (ell_height > bottom - top) ell_height = bottom - top;
 179
 180     PSDRV_WriteSpool(physDev, "%RoundRect\n",11);
 181     PSDRV_SetPen(physDev);
 182
 183     PSDRV_SetClip(physDev);
 184     PSDRV_WriteMoveTo( physDev, left, top + ell_height/2 );
 185     PSDRV_WriteArc( physDev, left + ell_width/2, top + ell_height/2, ell_width,
 186                     ell_height, 90.0, 180.0);
 187     PSDRV_WriteLineTo( physDev, right - ell_width/2, top );
 188     PSDRV_WriteArc( physDev, right - ell_width/2, top + ell_height/2, ell_width,
 189                     ell_height, 0.0, 90.0);
 190     PSDRV_WriteLineTo( physDev, right, bottom - ell_height/2 );
 191     PSDRV_WriteArc( physDev, right - ell_width/2, bottom - ell_height/2, ell_width,
 192                     ell_height, -90.0, 0.0);
 193     PSDRV_WriteLineTo( physDev, right - ell_width/2, bottom);
 194     PSDRV_WriteArc( physDev, left + ell_width/2, bottom - ell_height/2, ell_width,
 195                     ell_height, 180.0, -90.0);
 196     PSDRV_WriteClosePath( physDev );
 197
 198     PSDRV_Brush(physDev,0);
 199     PSDRV_DrawLine(physDev);
 200     PSDRV_ResetClip(physDev);
 201     return TRUE;
 202 }
 203
 204 /***********************************************************************
 205  *           PSDRV_DrawArc
 206  *
 207  * Does the work of Arc, Chord and Pie. lines is 0, 1 or 2 respectively.
 208  */
 209 static BOOL PSDRV_DrawArc( PSDRV_PDEVICE *physDev, INT left, INT top,
 210                            INT right, INT bottom, INT xstart, INT ystart,
 211                            INT xend, INT yend, int lines )
 212 {
 213     INT x, y, h, w;
 214     double start_angle, end_angle, ratio;
 215     RECT rect;
 216     POINT start, end;
 217
 218     rect.left = left;
 219     rect.top = top;
 220     rect.right = right;
 221     rect.bottom = bottom;
 222     LPtoDP( physDev->hdc, (POINT *)&rect, 2 );
 223     start.x = xstart;
 224     start.y = ystart;
 225     end.x = xend;
 226     end.y = yend;
 227     LPtoDP( physDev->hdc, &start, 1 );
 228     LPtoDP( physDev->hdc, &end, 1 );
 229
 230     x = (rect.left + rect.right) / 2;
 231     y = (rect.top + rect.bottom) / 2;
 232     w = rect.right - rect.left;
 233     h = rect.bottom - rect.top;
 234
 235     if(w < 0) w = -w;
 236     if(h < 0) h = -h;
 237     ratio = ((double)w)/h;
 238
 239     /* angle is the angle after the rectangle is transformed to a square and is
 240        measured anticlockwise from the +ve x-axis */
 241
 242     start_angle = atan2((double)(y - start.y) * ratio, (double)(start.x - x));
 243     end_angle = atan2((double)(y - end.y) * ratio, (double)(end.x - x));
 244
 245     start_angle *= 180.0 / PI;
 246     end_angle *= 180.0 / PI;
 247
 248     PSDRV_WriteSpool(physDev,"%DrawArc\n", 9);
 249     PSDRV_SetPen(physDev);
 250
 251     PSDRV_SetClip(physDev);
 252     if(lines == 2) /* pie */
 253         PSDRV_WriteMoveTo(physDev, x, y);
 254     else
 255         PSDRV_WriteNewPath( physDev );
 256
 257     PSDRV_WriteArc(physDev, x, y, w, h, start_angle, end_angle);
 258     if(lines == 1 || lines == 2) { /* chord or pie */
 259         PSDRV_WriteClosePath(physDev);
 260         PSDRV_Brush(physDev,0);
 261     }
 262     PSDRV_DrawLine(physDev);
 263     PSDRV_ResetClip(physDev);
 264
 265     return TRUE;
 266 }
 267
 268
 269 /***********************************************************************
 270  *           PSDRV_Arc
 271  */
 272 BOOL PSDRV_Arc( PSDRV_PDEVICE *physDev, INT left, INT top, INT right, INT bottom,
 273                 INT xstart, INT ystart, INT xend, INT yend )
 274 {
 275     return PSDRV_DrawArc( physDev, left, top, right, bottom, xstart, ystart, xend, yend, 0 );
 276 }
 277
 278 /***********************************************************************
 279  *           PSDRV_Chord
 280  */
 281 BOOL PSDRV_Chord( PSDRV_PDEVICE *physDev, INT left, INT top, INT right, INT bottom,
 282                   INT xstart, INT ystart, INT xend, INT yend )
 283 {
 284     return PSDRV_DrawArc( physDev, left, top, right, bottom, xstart, ystart, xend, yend, 1 );
 285 }
 286
 287
 288 /***********************************************************************
 289  *           PSDRV_Pie
 290  */
 291 BOOL PSDRV_Pie( PSDRV_PDEVICE *physDev, INT left, INT top, INT right, INT bottom,
 292                 INT xstart, INT ystart, INT xend, INT yend )
 293 {
 294     return PSDRV_DrawArc( physDev, left, top, right, bottom, xstart, ystart, xend, yend, 2 );
 295 }
 296
 297
 298 /***********************************************************************
 299  *           PSDRV_Ellipse
 300  */
 301 BOOL PSDRV_Ellipse( PSDRV_PDEVICE *physDev, INT left, INT top, INT right, INT bottom)
 302 {
 303     INT x, y, w, h;
 304     RECT rect;
 305
 306     TRACE("%d %d - %d %d\n", left, top, right, bottom);
 307
 308     rect.left   = left;
 309     rect.top    = top;
 310     rect.right  = right;
 311     rect.bottom = bottom;
 312     LPtoDP( physDev->hdc, (POINT *)&rect, 2 );
 313
 314     x = (rect.left + rect.right) / 2;
 315     y = (rect.top + rect.bottom) / 2;
 316     w = rect.right - rect.left;
 317     h = rect.bottom - rect.top;
 318
 319     PSDRV_WriteSpool(physDev, "%Ellipse\n", 9);
 320     PSDRV_SetPen(physDev);
 321
 322     PSDRV_SetClip(physDev);
 323     PSDRV_WriteNewPath(physDev);
 324     PSDRV_WriteArc(physDev, x, y, w, h, 0.0, 360.0);
 325     PSDRV_WriteClosePath(physDev);
 326     PSDRV_Brush(physDev,0);
 327     PSDRV_DrawLine(physDev);
 328     PSDRV_ResetClip(physDev);
 329     return TRUE;
 330 }
 331
 332
 333 /***********************************************************************
 334  *           PSDRV_PolyPolyline
 335  */
 336 BOOL PSDRV_PolyPolyline( PSDRV_PDEVICE *physDev, const POINT* pts, const DWORD* counts,
 337                          DWORD polylines )
 338 {
 339     DWORD polyline, line, total;
 340     POINT *dev_pts, *pt;
 341
 342     TRACE("\n");
 343
 344     for (polyline = total = 0; polyline < polylines; polyline++) total += counts[polyline];
 345     if (!(dev_pts = HeapAlloc( GetProcessHeap(), 0, total * sizeof(*dev_pts) ))) return FALSE;
 346     memcpy( dev_pts, pts, total * sizeof(*dev_pts) );
 347     LPtoDP( physDev->hdc, dev_pts, total );
 348
 349     pt = dev_pts;
 350
 351     PSDRV_WriteSpool(physDev, "%PolyPolyline\n",14);
 352     PSDRV_SetPen(physDev);
 353     PSDRV_SetClip(physDev);
 354
 355     for(polyline = 0; polyline < polylines; polyline++) {
 356         PSDRV_WriteMoveTo(physDev, pt->x, pt->y);
 357         pt++;
 358         for(line = 1; line < counts[polyline]; line++, pt++)
 359             PSDRV_WriteLineTo(physDev, pt->x, pt->y);
 360     }
 361     HeapFree( GetProcessHeap(), 0, dev_pts );
 362
 363     PSDRV_DrawLine(physDev);
 364     PSDRV_ResetClip(physDev);
 365     return TRUE;
 366 }
 367
 368
 369 /***********************************************************************
 370  *           PSDRV_Polyline
 371  */
 372 BOOL PSDRV_Polyline( PSDRV_PDEVICE *physDev, const POINT* pt, INT count )
 373 {
 374     return PSDRV_PolyPolyline( physDev, pt, (LPDWORD) &count, 1 );
 375 }
 376
 377
 378 /***********************************************************************
 379  *           PSDRV_PolyPolygon
 380  */
 381 BOOL PSDRV_PolyPolygon( PSDRV_PDEVICE *physDev, const POINT* pts, const INT* counts,
 382                         UINT polygons )
 383 {
 384     DWORD polygon, total;
 385     INT line;
 386     POINT *dev_pts, *pt;
 387
 388     TRACE("\n");
 389
 390     for (polygon = total = 0; polygon < polygons; polygon++) total += counts[polygon];
 391     if (!(dev_pts = HeapAlloc( GetProcessHeap(), 0, total * sizeof(*dev_pts) ))) return FALSE;
 392     memcpy( dev_pts, pts, total * sizeof(*dev_pts) );
 393     LPtoDP( physDev->hdc, dev_pts, total );
 394
 395     pt = dev_pts;
 396
 397     PSDRV_WriteSpool(physDev, "%PolyPolygon\n",13);
 398     PSDRV_SetPen(physDev);
 399     PSDRV_SetClip(physDev);
 400
 401     for(polygon = 0; polygon < polygons; polygon++) {
 402         PSDRV_WriteMoveTo(physDev, pt->x, pt->y);
 403         pt++;
 404         for(line = 1; line < counts[polygon]; line++, pt++)
 405             PSDRV_WriteLineTo(physDev, pt->x, pt->y);
 406         PSDRV_WriteClosePath(physDev);
 407     }
 408     HeapFree( GetProcessHeap(), 0, dev_pts );
 409
 410     if(GetPolyFillMode( physDev->hdc ) == ALTERNATE)
 411         PSDRV_Brush(physDev, 1);
 412     else /* WINDING */
 413         PSDRV_Brush(physDev, 0);
 414
 415     PSDRV_DrawLine(physDev);
 416     PSDRV_ResetClip(physDev);
 417     return TRUE;
 418 }
 419
 420
 421 /***********************************************************************
 422  *           PSDRV_Polygon
 423  */
 424 BOOL PSDRV_Polygon( PSDRV_PDEVICE *physDev, const POINT* pt, INT count )
 425 {
 426      return PSDRV_PolyPolygon( physDev, pt, &count, 1 );
 427 }
 428
 429
 430 /***********************************************************************
 431  *           PSDRV_SetPixel
 432  */
 433 COLORREF PSDRV_SetPixel( PSDRV_PDEVICE *physDev, INT x, INT y, COLORREF color )
 434 {
 435     PSCOLOR pscolor;
 436     POINT pt;
 437
 438     pt.x = x;
 439     pt.y = y;
 440     LPtoDP( physDev->hdc, &pt, 1 );
 441
 442     PSDRV_SetClip(physDev);
 443     /* we bracket the setcolor in gsave/grestore so that we don't trash
 444        the current pen colour */
 445     PSDRV_WriteGSave(physDev);
 446     PSDRV_WriteRectangle( physDev, pt.x, pt.y, 0, 0 );
 447     PSDRV_CreateColor( physDev, &pscolor, color );
 448     PSDRV_WriteSetColor( physDev, &pscolor );
 449     PSDRV_WriteFill( physDev );
 450     PSDRV_WriteGRestore(physDev);
 451     PSDRV_ResetClip(physDev);
 452     return color;
 453 }
 454
 455 /***********************************************************************
 456  *           PSDRV_PaintRgn
 457  */
 458 BOOL PSDRV_PaintRgn( PSDRV_PDEVICE *physDev, HRGN hrgn )
 459 {
 460
 461     RGNDATA *rgndata = NULL;
 462     RECT *pRect;
 463     DWORD size, i;
 464
 465     TRACE("hdc=%p\n", physDev->hdc);
 466
 467     size = GetRegionData(hrgn, 0, NULL);
 468     rgndata = HeapAlloc( GetProcessHeap(), 0, size );
 469     if(!rgndata) {
 470         ERR("Can't allocate buffer\n");
 471         return FALSE;
 472     }
 473
 474     GetRegionData(hrgn, size, rgndata);
 475     if (rgndata->rdh.nCount == 0)
 476         goto end;
 477
 478     LPtoDP(physDev->hdc, (POINT*)rgndata->Buffer, rgndata->rdh.nCount * 2);
 479
 480     PSDRV_SetClip(physDev);
 481     PSDRV_WriteNewPath(physDev);
 482     for(i = 0, pRect = (RECT*)rgndata->Buffer; i < rgndata->rdh.nCount; i++, pRect++)
 483         PSDRV_WriteRectangle(physDev, pRect->left, pRect->top, pRect->right - pRect->left, pRect->bottom - pRect->top);
 484
 485     PSDRV_Brush(physDev, 0);
 486     PSDRV_ResetClip(physDev);
 487
 488  end:
 489     HeapFree(GetProcessHeap(), 0, rgndata);
 490     return TRUE;
 491 }