reactos/dll/win32/gdiplus/graphics.c

   1 /*
   2  * Copyright (C) 2007 Google (Evan Stade)
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include <stdarg.h>
  20 #include <math.h>
  21 #include <limits.h>
  22
  23 #include "windef.h"
  24 #include "winbase.h"
  25 #include "winuser.h"
  26 #include "wingdi.h"
  27 #include "wine/unicode.h"
  28
  29 #define COBJMACROS
  30 #include "objbase.h"
  31 #include "ocidl.h"
  32 #include "olectl.h"
  33 #include "ole2.h"
  34
  35 #include "winreg.h"
  36 #include "shlwapi.h"
  37
  38 #include "gdiplus.h"
  39 #include "gdiplus_private.h"
  40 #include "wine/debug.h"
  41
  42 WINE_DEFAULT_DEBUG_CHANNEL(gdiplus);
  43
  44 /* looks-right constants */
  45 #define TENSION_CONST (0.3)
  46 #define ANCHOR_WIDTH (2.0)
  47 #define MAX_ITERS (50)
  48
  49 /* Converts angle (in degrees) to x/y coordinates */
  50 static void deg2xy(REAL angle, REAL x_0, REAL y_0, REAL *x, REAL *y)
  51 {
  52     REAL radAngle, hypotenuse;
  53
  54     radAngle = deg2rad(angle);
  55     hypotenuse = 50.0; /* arbitrary */
  56
  57     *x = x_0 + cos(radAngle) * hypotenuse;
  58     *y = y_0 + sin(radAngle) * hypotenuse;
  59 }
  60
  61 /* Converts from gdiplus path point type to gdi path point type. */
  62 static BYTE convert_path_point_type(BYTE type)
  63 {
  64     BYTE ret;
  65
  66     switch(type & PathPointTypePathTypeMask){
  67         case PathPointTypeBezier:
  68             ret = PT_BEZIERTO;
  69             break;
  70         case PathPointTypeLine:
  71             ret = PT_LINETO;
  72             break;
  73         case PathPointTypeStart:
  74             ret = PT_MOVETO;
  75             break;
  76         default:
  77             ERR("Bad point type\n");
  78             return 0;
  79     }
  80
  81     if(type & PathPointTypeCloseSubpath)
  82         ret |= PT_CLOSEFIGURE;
  83
  84     return ret;
  85 }
  86
  87 static INT prepare_dc(GpGraphics *graphics, GpPen *pen)
  88 {
  89     HPEN gdipen;
  90     REAL width;
  91     INT save_state = SaveDC(graphics->hdc), i, numdashes;
  92     GpPointF pt[2];
  93     DWORD dash_array[MAX_DASHLEN];
  94
  95     EndPath(graphics->hdc);
  96
  97     if(pen->unit == UnitPixel){
  98         width = pen->width;
  99     }
 100     else{
 101         /* Get an estimate for the amount the pen width is affected by the world
 102          * transform. (This is similar to what some of the wine drivers do.) */
 103         pt[0].X = 0.0;
 104         pt[0].Y = 0.0;
 105         pt[1].X = 1.0;
 106         pt[1].Y = 1.0;
 107         GdipTransformMatrixPoints(graphics->worldtrans, pt, 2);
 108         width = sqrt((pt[1].X - pt[0].X) * (pt[1].X - pt[0].X) +
 109                      (pt[1].Y - pt[0].Y) * (pt[1].Y - pt[0].Y)) / sqrt(2.0);
 110
 111         width *= pen->width * convert_unit(graphics->hdc,
 112                               pen->unit == UnitWorld ? graphics->unit : pen->unit);
 113     }
 114
 115     if(pen->dash == DashStyleCustom){
 116         numdashes = min(pen->numdashes, MAX_DASHLEN);
 117
 118         TRACE("dashes are: ");
 119         for(i = 0; i < numdashes; i++){
 120             dash_array[i] = roundr(width * pen->dashes[i]);
 121             TRACE("%d, ", dash_array[i]);
 122         }
 123         TRACE("\n and the pen style is %x\n", pen->style);
 124
 125         gdipen = ExtCreatePen(pen->style, roundr(width), &pen->brush->lb,
 126                               numdashes, dash_array);
 127     }
 128     else
 129         gdipen = ExtCreatePen(pen->style, roundr(width), &pen->brush->lb, 0, NULL);
 130
 131     SelectObject(graphics->hdc, gdipen);
 132
 133     return save_state;
 134 }
 135
 136 static void restore_dc(GpGraphics *graphics, INT state)
 137 {
 138     DeleteObject(SelectObject(graphics->hdc, GetStockObject(NULL_PEN)));
 139     RestoreDC(graphics->hdc, state);
 140 }
 141
 142 /* This helper applies all the changes that the points listed in ptf need in
 143  * order to be drawn on the device context.  In the end, this should include at
 144  * least:
 145  *  -scaling by page unit
 146  *  -applying world transformation
 147  *  -converting from float to int
 148  * Native gdiplus uses gdi32 to do all this (via SetMapMode, SetViewportExtEx,
 149  * SetWindowExtEx, SetWorldTransform, etc.) but we cannot because we are using
 150  * gdi to draw, and these functions would irreparably mess with line widths.
 151  */
 152 static void transform_and_round_points(GpGraphics *graphics, POINT *pti,
 153     GpPointF *ptf, INT count)
 154 {
 155     REAL unitscale;
 156     GpMatrix *matrix;
 157     int i;
 158
 159     unitscale = convert_unit(graphics->hdc, graphics->unit);
 160
 161     /* apply page scale */
 162     if(graphics->unit != UnitDisplay)
 163         unitscale *= graphics->scale;
 164
 165     GdipCloneMatrix(graphics->worldtrans, &matrix);
 166     GdipScaleMatrix(matrix, unitscale, unitscale, MatrixOrderAppend);
 167     GdipTransformMatrixPoints(matrix, ptf, count);
 168     GdipDeleteMatrix(matrix);
 169
 170     for(i = 0; i < count; i++){
 171         pti[i].x = roundr(ptf[i].X);
 172         pti[i].y = roundr(ptf[i].Y);
 173     }
 174 }
 175
 176 /* GdipDrawPie/GdipFillPie helper function */
 177 static void draw_pie(GpGraphics *graphics, REAL x, REAL y, REAL width,
 178     REAL height, REAL startAngle, REAL sweepAngle)
 179 {
 180     GpPointF ptf[4];
 181     POINT pti[4];
 182
 183     ptf[0].X = x;
 184     ptf[0].Y = y;
 185     ptf[1].X = x + width;
 186     ptf[1].Y = y + height;
 187
 188     deg2xy(startAngle+sweepAngle, x + width / 2.0, y + width / 2.0, &ptf[2].X, &ptf[2].Y);
 189     deg2xy(startAngle, x + width / 2.0, y + width / 2.0, &ptf[3].X, &ptf[3].Y);
 190
 191     transform_and_round_points(graphics, pti, ptf, 4);
 192
 193     Pie(graphics->hdc, pti[0].x, pti[0].y, pti[1].x, pti[1].y, pti[2].x,
 194         pti[2].y, pti[3].x, pti[3].y);
 195 }
 196
 197 /* GdipDrawCurve helper function.
 198  * Calculates Bezier points from cardinal spline points. */
 199 static void calc_curve_bezier(CONST GpPointF *pts, REAL tension, REAL *x1,
 200     REAL *y1, REAL *x2, REAL *y2)
 201 {
 202     REAL xdiff, ydiff;
 203
 204     /* calculate tangent */
 205     xdiff = pts[2].X - pts[0].X;
 206     ydiff = pts[2].Y - pts[0].Y;
 207
 208     /* apply tangent to get control points */
 209     *x1 = pts[1].X - tension * xdiff;
 210     *y1 = pts[1].Y - tension * ydiff;
 211     *x2 = pts[1].X + tension * xdiff;
 212     *y2 = pts[1].Y + tension * ydiff;
 213 }
 214
 215 /* GdipDrawCurve helper function.
 216  * Calculates Bezier points from cardinal spline endpoints. */
 217 static void calc_curve_bezier_endp(REAL xend, REAL yend, REAL xadj, REAL yadj,
 218     REAL tension, REAL *x, REAL *y)
 219 {
 220     /* tangent at endpoints is the line from the endpoint to the adjacent point */
 221     *x = roundr(tension * (xadj - xend) + xend);
 222     *y = roundr(tension * (yadj - yend) + yend);
 223 }
 224
 225 /* Draws the linecap the specified color and size on the hdc.  The linecap is in
 226  * direction of the line from x1, y1 to x2, y2 and is anchored on x2, y2. Probably
 227  * should not be called on an hdc that has a path you care about. */
 228 static void draw_cap(GpGraphics *graphics, COLORREF color, GpLineCap cap, REAL size,
 229     const GpCustomLineCap *custom, REAL x1, REAL y1, REAL x2, REAL y2)
 230 {
 231     HGDIOBJ oldbrush = NULL, oldpen = NULL;
 232     GpMatrix *matrix = NULL;
 233     HBRUSH brush = NULL;
 234     HPEN pen = NULL;
 235     PointF ptf[4], *custptf = NULL;
 236     POINT pt[4], *custpt = NULL;
 237     BYTE *tp = NULL;
 238     REAL theta, dsmall, dbig, dx, dy = 0.0;
 239     INT i, count;
 240     LOGBRUSH lb;
 241     BOOL customstroke;
 242
 243     if((x1 == x2) && (y1 == y2))
 244         return;
 245
 246     theta = gdiplus_atan2(y2 - y1, x2 - x1);
 247
 248     customstroke = (cap == LineCapCustom) && custom && (!custom->fill);
 249     if(!customstroke){
 250         brush = CreateSolidBrush(color);
 251         lb.lbStyle = BS_SOLID;
 252         lb.lbColor = color;
 253         lb.lbHatch = 0;
 254         pen = ExtCreatePen(PS_GEOMETRIC | PS_SOLID | PS_ENDCAP_FLAT |
 255                            PS_JOIN_MITER, 1, &lb, 0,
 256                            NULL);
 257         oldbrush = SelectObject(graphics->hdc, brush);
 258         oldpen = SelectObject(graphics->hdc, pen);
 259     }
 260
 261     switch(cap){
 262         case LineCapFlat:
 263             break;
 264         case LineCapSquare:
 265         case LineCapSquareAnchor:
 266         case LineCapDiamondAnchor:
 267             size = size * (cap & LineCapNoAnchor ? ANCHOR_WIDTH : 1.0) / 2.0;
 268             if(cap == LineCapDiamondAnchor){
 269                 dsmall = cos(theta + M_PI_2) * size;
 270                 dbig = sin(theta + M_PI_2) * size;
 271             }
 272             else{
 273                 dsmall = cos(theta + M_PI_4) * size;
 274                 dbig = sin(theta + M_PI_4) * size;
 275             }
 276
 277             ptf[0].X = x2 - dsmall;
 278             ptf[1].X = x2 + dbig;
 279
 280             ptf[0].Y = y2 - dbig;
 281             ptf[3].Y = y2 + dsmall;
 282
 283             ptf[1].Y = y2 - dsmall;
 284             ptf[2].Y = y2 + dbig;
 285
 286             ptf[3].X = x2 - dbig;
 287             ptf[2].X = x2 + dsmall;
 288
 289             transform_and_round_points(graphics, pt, ptf, 4);
 290             Polygon(graphics->hdc, pt, 4);
 291
 292             break;
 293         case LineCapArrowAnchor:
 294             size = size * 4.0 / sqrt(3.0);
 295
 296             dx = cos(M_PI / 6.0 + theta) * size;
 297             dy = sin(M_PI / 6.0 + theta) * size;
 298
 299             ptf[0].X = x2 - dx;
 300             ptf[0].Y = y2 - dy;
 301
 302             dx = cos(- M_PI / 6.0 + theta) * size;
 303             dy = sin(- M_PI / 6.0 + theta) * size;
 304
 305             ptf[1].X = x2 - dx;
 306             ptf[1].Y = y2 - dy;
 307
 308             ptf[2].X = x2;
 309             ptf[2].Y = y2;
 310
 311             transform_and_round_points(graphics, pt, ptf, 3);
 312             Polygon(graphics->hdc, pt, 3);
 313
 314             break;
 315         case LineCapRoundAnchor:
 316             dx = dy = ANCHOR_WIDTH * size / 2.0;
 317
 318             ptf[0].X = x2 - dx;
 319             ptf[0].Y = y2 - dy;
 320             ptf[1].X = x2 + dx;
 321             ptf[1].Y = y2 + dy;
 322
 323             transform_and_round_points(graphics, pt, ptf, 2);
 324             Ellipse(graphics->hdc, pt[0].x, pt[0].y, pt[1].x, pt[1].y);
 325
 326             break;
 327         case LineCapTriangle:
 328             size = size / 2.0;
 329             dx = cos(M_PI_2 + theta) * size;
 330             dy = sin(M_PI_2 + theta) * size;
 331
 332             ptf[0].X = x2 - dx;
 333             ptf[0].Y = y2 - dy;
 334             ptf[1].X = x2 + dx;
 335             ptf[1].Y = y2 + dy;
 336
 337             dx = cos(theta) * size;
 338             dy = sin(theta) * size;
 339
 340             ptf[2].X = x2 + dx;
 341             ptf[2].Y = y2 + dy;
 342
 343             transform_and_round_points(graphics, pt, ptf, 3);
 344             Polygon(graphics->hdc, pt, 3);
 345
 346             break;
 347         case LineCapRound:
 348             dx = dy = size / 2.0;
 349
 350             ptf[0].X = x2 - dx;
 351             ptf[0].Y = y2 - dy;
 352             ptf[1].X = x2 + dx;
 353             ptf[1].Y = y2 + dy;
 354
 355             dx = -cos(M_PI_2 + theta) * size;
 356             dy = -sin(M_PI_2 + theta) * size;
 357
 358             ptf[2].X = x2 - dx;
 359             ptf[2].Y = y2 - dy;
 360             ptf[3].X = x2 + dx;
 361             ptf[3].Y = y2 + dy;
 362
 363             transform_and_round_points(graphics, pt, ptf, 4);
 364             Pie(graphics->hdc, pt[0].x, pt[0].y, pt[1].x, pt[1].y, pt[2].x,
 365                 pt[2].y, pt[3].x, pt[3].y);
 366
 367             break;
 368         case LineCapCustom:
 369             if(!custom)
 370                 break;
 371
 372             count = custom->pathdata.Count;
 373             custptf = GdipAlloc(count * sizeof(PointF));
 374             custpt = GdipAlloc(count * sizeof(POINT));
 375             tp = GdipAlloc(count);
 376
 377             if(!custptf || !custpt || !tp || (GdipCreateMatrix(&matrix) != Ok))
 378                 goto custend;
 379
 380             memcpy(custptf, custom->pathdata.Points, count * sizeof(PointF));
 381
 382             GdipScaleMatrix(matrix, size, size, MatrixOrderAppend);
 383             GdipRotateMatrix(matrix, (180.0 / M_PI) * (theta - M_PI_2),
 384                              MatrixOrderAppend);
 385             GdipTranslateMatrix(matrix, x2, y2, MatrixOrderAppend);
 386             GdipTransformMatrixPoints(matrix, custptf, count);
 387
 388             transform_and_round_points(graphics, custpt, custptf, count);
 389
 390             for(i = 0; i < count; i++)
 391                 tp[i] = convert_path_point_type(custom->pathdata.Types[i]);
 392
 393             if(custom->fill){
 394                 BeginPath(graphics->hdc);
 395                 PolyDraw(graphics->hdc, custpt, tp, count);
 396                 EndPath(graphics->hdc);
 397                 StrokeAndFillPath(graphics->hdc);
 398             }
 399             else
 400                 PolyDraw(graphics->hdc, custpt, tp, count);
 401
 402 custend:
 403             GdipFree(custptf);
 404             GdipFree(custpt);
 405             GdipFree(tp);
 406             GdipDeleteMatrix(matrix);
 407             break;
 408         default:
 409             break;
 410     }
 411
 412     if(!customstroke){
 413         SelectObject(graphics->hdc, oldbrush);
 414         SelectObject(graphics->hdc, oldpen);
 415         DeleteObject(brush);
 416         DeleteObject(pen);
 417     }
 418 }
 419
 420 /* Shortens the line by the given percent by changing x2, y2.
 421  * If percent is > 1.0 then the line will change direction.
 422  * If percent is negative it can lengthen the line. */
 423 static void shorten_line_percent(REAL x1, REAL  y1, REAL *x2, REAL *y2, REAL percent)
 424 {
 425     REAL dist, theta, dx, dy;
 426
 427     if((y1 == *y2) && (x1 == *x2))
 428         return;
 429
 430     dist = sqrt((*x2 - x1) * (*x2 - x1) + (*y2 - y1) * (*y2 - y1)) * -percent;
 431     theta = gdiplus_atan2((*y2 - y1), (*x2 - x1));
 432     dx = cos(theta) * dist;
 433     dy = sin(theta) * dist;
 434
 435     *x2 = *x2 + dx;
 436     *y2 = *y2 + dy;
 437 }
 438
 439 /* Shortens the line by the given amount by changing x2, y2.
 440  * If the amount is greater than the distance, the line will become length 0.
 441  * If the amount is negative, it can lengthen the line. */
 442 static void shorten_line_amt(REAL x1, REAL y1, REAL *x2, REAL *y2, REAL amt)
 443 {
 444     REAL dx, dy, percent;
 445
 446     dx = *x2 - x1;
 447     dy = *y2 - y1;
 448     if(dx == 0 && dy == 0)
 449         return;
 450
 451     percent = amt / sqrt(dx * dx + dy * dy);
 452     if(percent >= 1.0){
 453         *x2 = x1;
 454         *y2 = y1;
 455         return;
 456     }
 457
 458     shorten_line_percent(x1, y1, x2, y2, percent);
 459 }
 460
 461 /* Draws lines between the given points, and if caps is true then draws an endcap
 462  * at the end of the last line. */
 463 static GpStatus draw_polyline(GpGraphics *graphics, GpPen *pen,
 464     GDIPCONST GpPointF * pt, INT count, BOOL caps)
 465 {
 466     POINT *pti = NULL;
 467     GpPointF *ptcopy = NULL;
 468     GpStatus status = GenericError;
 469
 470     if(!count)
 471         return Ok;
 472
 473     pti = GdipAlloc(count * sizeof(POINT));
 474     ptcopy = GdipAlloc(count * sizeof(GpPointF));
 475
 476     if(!pti || !ptcopy){
 477         status = OutOfMemory;
 478         goto end;
 479     }
 480
 481     memcpy(ptcopy, pt, count * sizeof(GpPointF));
 482
 483     if(caps){
 484         if(pen->endcap == LineCapArrowAnchor)
 485             shorten_line_amt(ptcopy[count-2].X, ptcopy[count-2].Y,
 486                              &ptcopy[count-1].X, &ptcopy[count-1].Y, pen->width);
 487         else if((pen->endcap == LineCapCustom) && pen->customend)
 488             shorten_line_amt(ptcopy[count-2].X, ptcopy[count-2].Y,
 489                              &ptcopy[count-1].X, &ptcopy[count-1].Y,
 490                              pen->customend->inset * pen->width);
 491
 492         if(pen->startcap == LineCapArrowAnchor)
 493             shorten_line_amt(ptcopy[1].X, ptcopy[1].Y,
 494                              &ptcopy[0].X, &ptcopy[0].Y, pen->width);
 495         else if((pen->startcap == LineCapCustom) && pen->customstart)
 496             shorten_line_amt(ptcopy[1].X, ptcopy[1].Y,
 497                              &ptcopy[0].X, &ptcopy[0].Y,
 498                              pen->customstart->inset * pen->width);
 499
 500         draw_cap(graphics, pen->brush->lb.lbColor, pen->endcap, pen->width, pen->customend,
 501                  pt[count - 2].X, pt[count - 2].Y, pt[count - 1].X, pt[count - 1].Y);
 502         draw_cap(graphics, pen->brush->lb.lbColor, pen->startcap, pen->width, pen->customstart,
 503                          pt[1].X, pt[1].Y, pt[0].X, pt[0].Y);
 504     }
 505
 506     transform_and_round_points(graphics, pti, ptcopy, count);
 507
 508     if(Polyline(graphics->hdc, pti, count))
 509         status = Ok;
 510
 511 end:
 512     GdipFree(pti);
 513     GdipFree(ptcopy);
 514
 515     return status;
 516 }
 517
 518 /* Conducts a linear search to find the bezier points that will back off
 519  * the endpoint of the curve by a distance of amt. Linear search works
 520  * better than binary in this case because there are multiple solutions,
 521  * and binary searches often find a bad one. I don't think this is what
 522  * Windows does but short of rendering the bezier without GDI's help it's
 523  * the best we can do. If rev then work from the start of the passed points
 524  * instead of the end. */
 525 static void shorten_bezier_amt(GpPointF * pt, REAL amt, BOOL rev)
 526 {
 527     GpPointF origpt[4];
 528     REAL percent = 0.00, dx, dy, origx, origy, diff = -1.0;
 529     INT i, first = 0, second = 1, third = 2, fourth = 3;
 530
 531     if(rev){
 532         first = 3;
 533         second = 2;
 534         third = 1;
 535         fourth = 0;
 536     }
 537
 538     origx = pt[fourth].X;
 539     origy = pt[fourth].Y;
 540     memcpy(origpt, pt, sizeof(GpPointF) * 4);
 541
 542     for(i = 0; (i < MAX_ITERS) && (diff < amt); i++){
 543         /* reset bezier points to original values */
 544         memcpy(pt, origpt, sizeof(GpPointF) * 4);
 545         /* Perform magic on bezier points. Order is important here.*/
 546         shorten_line_percent(pt[third].X, pt[third].Y, &pt[fourth].X, &pt[fourth].Y, percent);
 547         shorten_line_percent(pt[second].X, pt[second].Y, &pt[third].X, &pt[third].Y, percent);
 548         shorten_line_percent(pt[third].X, pt[third].Y, &pt[fourth].X, &pt[fourth].Y, percent);
 549         shorten_line_percent(pt[first].X, pt[first].Y, &pt[second].X, &pt[second].Y, percent);
 550         shorten_line_percent(pt[second].X, pt[second].Y, &pt[third].X, &pt[third].Y, percent);
 551         shorten_line_percent(pt[third].X, pt[third].Y, &pt[fourth].X, &pt[fourth].Y, percent);
 552
 553         dx = pt[fourth].X - origx;
 554         dy = pt[fourth].Y - origy;
 555
 556         diff = sqrt(dx * dx + dy * dy);
 557         percent += 0.0005 * amt;
 558     }
 559 }
 560
 561 /* Draws bezier curves between given points, and if caps is true then draws an
 562  * endcap at the end of the last line. */
 563 static GpStatus draw_polybezier(GpGraphics *graphics, GpPen *pen,
 564     GDIPCONST GpPointF * pt, INT count, BOOL caps)
 565 {
 566     POINT *pti;
 567     GpPointF *ptcopy;
 568     GpStatus status = GenericError;
 569
 570     if(!count)
 571         return Ok;
 572
 573     pti = GdipAlloc(count * sizeof(POINT));
 574     ptcopy = GdipAlloc(count * sizeof(GpPointF));
 575
 576     if(!pti || !ptcopy){
 577         status = OutOfMemory;
 578         goto end;
 579     }
 580
 581     memcpy(ptcopy, pt, count * sizeof(GpPointF));
 582
 583     if(caps){
 584         if(pen->endcap == LineCapArrowAnchor)
 585             shorten_bezier_amt(&ptcopy[count-4], pen->width, FALSE);
 586         else if((pen->endcap == LineCapCustom) && pen->customend)
 587             shorten_bezier_amt(&ptcopy[count-4], pen->width * pen->customend->inset,
 588                                FALSE);
 589
 590         if(pen->startcap == LineCapArrowAnchor)
 591             shorten_bezier_amt(ptcopy, pen->width, TRUE);
 592         else if((pen->startcap == LineCapCustom) && pen->customstart)
 593             shorten_bezier_amt(ptcopy, pen->width * pen->customstart->inset, TRUE);
 594
 595         /* the direction of the line cap is parallel to the direction at the
 596          * end of the bezier (which, if it has been shortened, is not the same
 597          * as the direction from pt[count-2] to pt[count-1]) */
 598         draw_cap(graphics, pen->brush->lb.lbColor, pen->endcap, pen->width, pen->customend,
 599             pt[count - 1].X - (ptcopy[count - 1].X - ptcopy[count - 2].X),
 600             pt[count - 1].Y - (ptcopy[count - 1].Y - ptcopy[count - 2].Y),
 601             pt[count - 1].X, pt[count - 1].Y);
 602
 603         draw_cap(graphics, pen->brush->lb.lbColor, pen->startcap, pen->width, pen->customstart,
 604             pt[0].X - (ptcopy[0].X - ptcopy[1].X),
 605             pt[0].Y - (ptcopy[0].Y - ptcopy[1].Y), pt[0].X, pt[0].Y);
 606     }
 607
 608     transform_and_round_points(graphics, pti, ptcopy, count);
 609
 610     PolyBezier(graphics->hdc, pti, count);
 611
 612     status = Ok;
 613
 614 end:
 615     GdipFree(pti);
 616     GdipFree(ptcopy);
 617
 618     return status;
 619 }
 620
 621 /* Draws a combination of bezier curves and lines between points. */
 622 static GpStatus draw_poly(GpGraphics *graphics, GpPen *pen, GDIPCONST GpPointF * pt,
 623     GDIPCONST BYTE * types, INT count, BOOL caps)
 624 {
 625     POINT *pti = GdipAlloc(count * sizeof(POINT));
 626     BYTE *tp = GdipAlloc(count);
 627     GpPointF *ptcopy = GdipAlloc(count * sizeof(GpPointF));
 628     INT i, j;
 629     GpStatus status = GenericError;
 630
 631     if(!count){
 632         status = Ok;
 633         goto end;
 634     }
 635     if(!pti || !tp || !ptcopy){
 636         status = OutOfMemory;
 637         goto end;
 638     }
 639
 640     for(i = 1; i < count; i++){
 641         if((types[i] & PathPointTypePathTypeMask) == PathPointTypeBezier){
 642             if((i + 2 >= count) || !(types[i + 1] & PathPointTypeBezier)
 643                 || !(types[i + 1] & PathPointTypeBezier)){
 644                 ERR("Bad bezier points\n");
 645                 goto end;
 646             }
 647             i += 2;
 648         }
 649     }
 650
 651     memcpy(ptcopy, pt, count * sizeof(GpPointF));
 652
 653     /* If we are drawing caps, go through the points and adjust them accordingly,
 654      * and draw the caps. */
 655     if(caps){
 656         switch(types[count - 1] & PathPointTypePathTypeMask){
 657             case PathPointTypeBezier:
 658                 if(pen->endcap == LineCapArrowAnchor)
 659                     shorten_bezier_amt(&ptcopy[count - 4], pen->width, FALSE);
 660                 else if((pen->endcap == LineCapCustom) && pen->customend)
 661                     shorten_bezier_amt(&ptcopy[count - 4],
 662                                        pen->width * pen->customend->inset, FALSE);
 663
 664                 draw_cap(graphics, pen->brush->lb.lbColor, pen->endcap, pen->width, pen->customend,
 665                     pt[count - 1].X - (ptcopy[count - 1].X - ptcopy[count - 2].X),
 666                     pt[count - 1].Y - (ptcopy[count - 1].Y - ptcopy[count - 2].Y),
 667                     pt[count - 1].X, pt[count - 1].Y);
 668
 669                 break;
 670             case PathPointTypeLine:
 671                 if(pen->endcap == LineCapArrowAnchor)
 672                     shorten_line_amt(ptcopy[count - 2].X, ptcopy[count - 2].Y,
 673                                      &ptcopy[count - 1].X, &ptcopy[count - 1].Y,
 674                                      pen->width);
 675                 else if((pen->endcap == LineCapCustom) && pen->customend)
 676                     shorten_line_amt(ptcopy[count - 2].X, ptcopy[count - 2].Y,
 677                                      &ptcopy[count - 1].X, &ptcopy[count - 1].Y,
 678                                      pen->customend->inset * pen->width);
 679
 680                 draw_cap(graphics, pen->brush->lb.lbColor, pen->endcap, pen->width, pen->customend,
 681                          pt[count - 2].X, pt[count - 2].Y, pt[count - 1].X,
 682                          pt[count - 1].Y);
 683
 684                 break;
 685             default:
 686                 ERR("Bad path last point\n");
 687                 goto end;
 688         }
 689
 690         /* Find start of points */
 691         for(j = 1; j < count && ((types[j] & PathPointTypePathTypeMask)
 692             == PathPointTypeStart); j++);
 693
 694         switch(types[j] & PathPointTypePathTypeMask){
 695             case PathPointTypeBezier:
 696                 if(pen->startcap == LineCapArrowAnchor)
 697                     shorten_bezier_amt(&ptcopy[j - 1], pen->width, TRUE);
 698                 else if((pen->startcap == LineCapCustom) && pen->customstart)
 699                     shorten_bezier_amt(&ptcopy[j - 1],
 700                                        pen->width * pen->customstart->inset, TRUE);
 701
 702                 draw_cap(graphics, pen->brush->lb.lbColor, pen->startcap, pen->width, pen->customstart,
 703                     pt[j - 1].X - (ptcopy[j - 1].X - ptcopy[j].X),
 704                     pt[j - 1].Y - (ptcopy[j - 1].Y - ptcopy[j].Y),
 705                     pt[j - 1].X, pt[j - 1].Y);
 706
 707                 break;
 708             case PathPointTypeLine:
 709                 if(pen->startcap == LineCapArrowAnchor)
 710                     shorten_line_amt(ptcopy[j].X, ptcopy[j].Y,
 711                                      &ptcopy[j - 1].X, &ptcopy[j - 1].Y,
 712                                      pen->width);
 713                 else if((pen->startcap == LineCapCustom) && pen->customstart)
 714                     shorten_line_amt(ptcopy[j].X, ptcopy[j].Y,
 715                                      &ptcopy[j - 1].X, &ptcopy[j - 1].Y,
 716                                      pen->customstart->inset * pen->width);
 717
 718                 draw_cap(graphics, pen->brush->lb.lbColor, pen->startcap, pen->width, pen->customstart,
 719                          pt[j].X, pt[j].Y, pt[j - 1].X,
 720                          pt[j - 1].Y);
 721
 722                 break;
 723             default:
 724                 ERR("Bad path points\n");
 725                 goto end;
 726         }
 727     }
 728
 729     transform_and_round_points(graphics, pti, ptcopy, count);
 730
 731     for(i = 0; i < count; i++){
 732         tp[i] = convert_path_point_type(types[i]);
 733     }
 734
 735     PolyDraw(graphics->hdc, pti, tp, count);
 736
 737     status = Ok;
 738
 739 end:
 740     GdipFree(pti);
 741     GdipFree(ptcopy);
 742     GdipFree(tp);
 743
 744     return status;
 745 }
 746
 747 GpStatus WINGDIPAPI GdipCreateFromHDC(HDC hdc, GpGraphics **graphics)
 748 {
 749     return GdipCreateFromHDC2(hdc, NULL, graphics);
 750 }
 751
 752 GpStatus WINGDIPAPI GdipCreateFromHDC2(HDC hdc, HANDLE hDevice, GpGraphics **graphics)
 753 {
 754     GpStatus retval;
 755
 756     if(hDevice != NULL) {
 757         FIXME("Don't know how to hadle parameter hDevice\n");
 758         return NotImplemented;
 759     }
 760
 761     if(hdc == NULL)
 762         return OutOfMemory;
 763
 764     if(graphics == NULL)
 765         return InvalidParameter;
 766
 767     *graphics = GdipAlloc(sizeof(GpGraphics));
 768     if(!*graphics)  return OutOfMemory;
 769
 770     if((retval = GdipCreateMatrix(&(*graphics)->worldtrans)) != Ok){
 771         GdipFree(*graphics);
 772         return retval;
 773     }
 774
 775     (*graphics)->hdc = hdc;
 776     (*graphics)->hwnd = NULL;
 777     (*graphics)->smoothing = SmoothingModeDefault;
 778     (*graphics)->compqual = CompositingQualityDefault;
 779     (*graphics)->interpolation = InterpolationModeDefault;
 780     (*graphics)->pixeloffset = PixelOffsetModeDefault;
 781     (*graphics)->compmode = CompositingModeSourceOver;
 782     (*graphics)->unit = UnitDisplay;
 783     (*graphics)->scale = 1.0;
 784
 785     return Ok;
 786 }
 787
 788 GpStatus WINGDIPAPI GdipCreateFromHWND(HWND hwnd, GpGraphics **graphics)
 789 {
 790     GpStatus ret;
 791
 792     if((ret = GdipCreateFromHDC(GetDC(hwnd), graphics)) != Ok)
 793         return ret;
 794
 795     (*graphics)->hwnd = hwnd;
 796
 797     return Ok;
 798 }
 799
 800 GpStatus WINGDIPAPI GdipCreateMetafileFromEmf(HENHMETAFILE hemf, BOOL delete,
 801     GpMetafile **metafile)
 802 {
 803     static int calls;
 804
 805     if(!hemf || !metafile)
 806         return InvalidParameter;
 807
 808     if(!(calls++))
 809         FIXME("not implemented\n");
 810
 811     return NotImplemented;
 812 }
 813
 814 GpStatus WINGDIPAPI GdipCreateMetafileFromWmf(HMETAFILE hwmf, BOOL delete,
 815     GDIPCONST WmfPlaceableFileHeader * placeable, GpMetafile **metafile)
 816 {
 817     IStream *stream = NULL;
 818     UINT read;
 819     BYTE* copy;
 820     HENHMETAFILE hemf;
 821     GpStatus retval = GenericError;
 822
 823     if(!hwmf || !metafile || !placeable)
 824         return InvalidParameter;
 825
 826     *metafile = NULL;
 827     read = GetMetaFileBitsEx(hwmf, 0, NULL);
 828     if(!read)
 829         return GenericError;
 830     copy = GdipAlloc(read);
 831     GetMetaFileBitsEx(hwmf, read, copy);
 832
 833     hemf = SetWinMetaFileBits(read, copy, NULL, NULL);
 834     GdipFree(copy);
 835
 836     read = GetEnhMetaFileBits(hemf, 0, NULL);
 837     copy = GdipAlloc(read);
 838     GetEnhMetaFileBits(hemf, read, copy);
 839     DeleteEnhMetaFile(hemf);
 840
 841     if(CreateStreamOnHGlobal(copy, TRUE, &stream) != S_OK){
 842         ERR("could not make stream\n");
 843         GdipFree(copy);
 844         goto err;
 845     }
 846
 847     *metafile = GdipAlloc(sizeof(GpMetafile));
 848     if(!*metafile){
 849         retval = OutOfMemory;
 850         goto err;
 851     }
 852
 853     if(OleLoadPicture(stream, 0, FALSE, &IID_IPicture,
 854         (LPVOID*) &((*metafile)->image.picture)) != S_OK)
 855         goto err;
 856
 857
 858     (*metafile)->image.type = ImageTypeMetafile;
 859     (*metafile)->bounds.X = ((REAL) placeable->BoundingBox.Left) / ((REAL) placeable->Inch);
 860     (*metafile)->bounds.Y = ((REAL) placeable->BoundingBox.Right) / ((REAL) placeable->Inch);
 861     (*metafile)->bounds.Width = ((REAL) (placeable->BoundingBox.Right
 862                     - placeable->BoundingBox.Left)) / ((REAL) placeable->Inch);
 863     (*metafile)->bounds.Height = ((REAL) (placeable->BoundingBox.Bottom
 864                    - placeable->BoundingBox.Top)) / ((REAL) placeable->Inch);
 865     (*metafile)->unit = UnitInch;
 866
 867     if(delete)
 868         DeleteMetaFile(hwmf);
 869
 870     return Ok;
 871
 872 err:
 873     GdipFree(*metafile);
 874     IStream_Release(stream);
 875     return retval;
 876 }
 877
 878 GpStatus WINGDIPAPI GdipCreateStreamOnFile(GDIPCONST WCHAR * filename,
 879     UINT access, IStream **stream)
 880 {
 881     DWORD dwMode;
 882     HRESULT ret;
 883
 884     if(!stream || !filename)
 885         return InvalidParameter;
 886
 887     if(access & GENERIC_WRITE)
 888         dwMode = STGM_SHARE_DENY_WRITE | STGM_WRITE | STGM_CREATE;
 889     else if(access & GENERIC_READ)
 890         dwMode = STGM_SHARE_DENY_WRITE | STGM_READ | STGM_FAILIFTHERE;
 891     else
 892         return InvalidParameter;
 893
 894     ret = SHCreateStreamOnFileW(filename, dwMode, stream);
 895
 896     return hresult_to_status(ret);
 897 }
 898
 899 GpStatus WINGDIPAPI GdipDeleteGraphics(GpGraphics *graphics)
 900 {
 901     if(!graphics) return InvalidParameter;
 902     if(graphics->hwnd)
 903         ReleaseDC(graphics->hwnd, graphics->hdc);
 904
 905     GdipDeleteMatrix(graphics->worldtrans);
 906     HeapFree(GetProcessHeap(), 0, graphics);
 907
 908     return Ok;
 909 }
 910
 911 GpStatus WINGDIPAPI GdipDrawArc(GpGraphics *graphics, GpPen *pen, REAL x,
 912     REAL y, REAL width, REAL height, REAL startAngle, REAL sweepAngle)
 913 {
 914     INT save_state, num_pts;
 915     GpPointF points[MAX_ARC_PTS];
 916     GpStatus retval;
 917
 918     if(!graphics || !pen || width <= 0 || height <= 0)
 919         return InvalidParameter;
 920
 921     num_pts = arc2polybezier(points, x, y, width, height, startAngle, sweepAngle);
 922
 923     save_state = prepare_dc(graphics, pen);
 924
 925     retval = draw_polybezier(graphics, pen, points, num_pts, TRUE);
 926
 927     restore_dc(graphics, save_state);
 928
 929     return retval;
 930 }
 931
 932 GpStatus WINGDIPAPI GdipDrawArcI(GpGraphics *graphics, GpPen *pen, INT x,
 933     INT y, INT width, INT height, REAL startAngle, REAL sweepAngle)
 934 {
 935     INT save_state, num_pts;
 936     GpPointF points[MAX_ARC_PTS];
 937     GpStatus retval;
 938
 939     if(!graphics || !pen || width <= 0 || height <= 0)
 940         return InvalidParameter;
 941
 942     num_pts = arc2polybezier(points, x, y, width, height, startAngle, sweepAngle);
 943
 944     save_state = prepare_dc(graphics, pen);
 945
 946     retval = draw_polybezier(graphics, pen, points, num_pts, TRUE);
 947
 948     restore_dc(graphics, save_state);
 949
 950     return retval;
 951 }
 952
 953 GpStatus WINGDIPAPI GdipDrawBezier(GpGraphics *graphics, GpPen *pen, REAL x1,
 954     REAL y1, REAL x2, REAL y2, REAL x3, REAL y3, REAL x4, REAL y4)
 955 {
 956     INT save_state;
 957     GpPointF pt[4];
 958     GpStatus retval;
 959
 960     if(!graphics || !pen)
 961         return InvalidParameter;
 962
 963     pt[0].X = x1;
 964     pt[0].Y = y1;
 965     pt[1].X = x2;
 966     pt[1].Y = y2;
 967     pt[2].X = x3;
 968     pt[2].Y = y3;
 969     pt[3].X = x4;
 970     pt[3].Y = y4;
 971
 972     save_state = prepare_dc(graphics, pen);
 973
 974     retval = draw_polybezier(graphics, pen, pt, 4, TRUE);
 975
 976     restore_dc(graphics, save_state);
 977
 978     return retval;
 979 }
 980
 981 GpStatus WINGDIPAPI GdipDrawBezierI(GpGraphics *graphics, GpPen *pen, INT x1,
 982     INT y1, INT x2, INT y2, INT x3, INT y3, INT x4, INT y4)
 983 {
 984     INT save_state;
 985     GpPointF pt[4];
 986     GpStatus retval;
 987
 988     if(!graphics || !pen)
 989         return InvalidParameter;
 990
 991     pt[0].X = x1;
 992     pt[0].Y = y1;
 993     pt[1].X = x2;
 994     pt[1].Y = y2;
 995     pt[2].X = x3;
 996     pt[2].Y = y3;
 997     pt[3].X = x4;
 998     pt[3].Y = y4;
 999
1000     save_state = prepare_dc(graphics, pen);
1001
1002     retval = draw_polybezier(graphics, pen, pt, 4, TRUE);
1003
1004     restore_dc(graphics, save_state);
1005
1006     return retval;
1007 }
1008
1009 /* Approximates cardinal spline with Bezier curves. */
1010 GpStatus WINGDIPAPI GdipDrawCurve2(GpGraphics *graphics, GpPen *pen,
1011     GDIPCONST GpPointF *points, INT count, REAL tension)
1012 {
1013     /* PolyBezier expects count*3-2 points. */
1014     INT i, len_pt = count*3-2, save_state;
1015     GpPointF *pt;
1016     REAL x1, x2, y1, y2;
1017     GpStatus retval;
1018
1019     if(!graphics || !pen)
1020         return InvalidParameter;
1021
1022     pt = GdipAlloc(len_pt * sizeof(GpPointF));
1023     tension = tension * TENSION_CONST;
1024
1025     calc_curve_bezier_endp(points[0].X, points[0].Y, points[1].X, points[1].Y,
1026         tension, &x1, &y1);
1027
1028     pt[0].X = points[0].X;
1029     pt[0].Y = points[0].Y;
1030     pt[1].X = x1;
1031     pt[1].Y = y1;
1032
1033     for(i = 0; i < count-2; i++){
1034         calc_curve_bezier(&(points[i]), tension, &x1, &y1, &x2, &y2);
1035
1036         pt[3*i+2].X = x1;
1037         pt[3*i+2].Y = y1;
1038         pt[3*i+3].X = points[i+1].X;
1039         pt[3*i+3].Y = points[i+1].Y;
1040         pt[3*i+4].X = x2;
1041         pt[3*i+4].Y = y2;
1042     }
1043
1044     calc_curve_bezier_endp(points[count-1].X, points[count-1].Y,
1045         points[count-2].X, points[count-2].Y, tension, &x1, &y1);
1046
1047     pt[len_pt-2].X = x1;
1048     pt[len_pt-2].Y = y1;
1049     pt[len_pt-1].X = points[count-1].X;
1050     pt[len_pt-1].Y = points[count-1].Y;
1051
1052     save_state = prepare_dc(graphics, pen);
1053
1054     retval = draw_polybezier(graphics, pen, pt, len_pt, TRUE);
1055
1056     GdipFree(pt);
1057     restore_dc(graphics, save_state);
1058
1059     return retval;
1060 }
1061
1062 GpStatus WINGDIPAPI GdipDrawImageI(GpGraphics *graphics, GpImage *image, INT x,
1063     INT y)
1064 {
1065     UINT width, height, srcw, srch;
1066
1067     if(!graphics || !image)
1068         return InvalidParameter;
1069
1070     GdipGetImageWidth(image, &width);
1071     GdipGetImageHeight(image, &height);
1072
1073     srcw = width * (((REAL) INCH_HIMETRIC) /
1074             ((REAL) GetDeviceCaps(graphics->hdc, LOGPIXELSX)));
1075     srch = height * (((REAL) INCH_HIMETRIC) /
1076             ((REAL) GetDeviceCaps(graphics->hdc, LOGPIXELSY)));
1077
1078     if(image->type != ImageTypeMetafile){
1079         y += height;
1080         height *= -1;
1081     }
1082
1083     IPicture_Render(image->picture, graphics->hdc, x, y, width, height,
1084                     0, 0, srcw, srch, NULL);
1085
1086     return Ok;
1087 }
1088
1089 /* FIXME: partially implemented (only works for rectangular parallelograms) */
1090 GpStatus WINGDIPAPI GdipDrawImagePointsRect(GpGraphics *graphics, GpImage *image,
1091      GDIPCONST GpPointF *points, INT count, REAL srcx, REAL srcy, REAL srcwidth,
1092      REAL srcheight, GpUnit srcUnit, GDIPCONST GpImageAttributes* imageAttributes,
1093      DrawImageAbort callback, VOID * callbackData)
1094 {
1095     GpPointF ptf[3];
1096     POINT pti[3];
1097     REAL dx, dy;
1098
1099     TRACE("%p %p %p %d %f %f %f %f %d %p %p %p\n", graphics, image, points, count,
1100           srcx, srcy, srcwidth, srcheight, srcUnit, imageAttributes, callback,
1101           callbackData);
1102
1103     if(!graphics || !image || !points || !imageAttributes || count != 3)
1104          return InvalidParameter;
1105
1106     if(srcUnit == UnitInch)
1107         dx = dy = (REAL) INCH_HIMETRIC;
1108     else if(srcUnit == UnitPixel){
1109         dx = ((REAL) INCH_HIMETRIC) /
1110              ((REAL) GetDeviceCaps(graphics->hdc, LOGPIXELSX));
1111         dy = ((REAL) INCH_HIMETRIC) /
1112              ((REAL) GetDeviceCaps(graphics->hdc, LOGPIXELSY));
1113     }
1114     else
1115         return NotImplemented;
1116
1117     memcpy(ptf, points, 3 * sizeof(GpPointF));
1118     transform_and_round_points(graphics, pti, ptf, 3);
1119
1120     /* IPicture renders bitmaps with the y-axis reversed
1121      * FIXME: flipping for unknown image type might not be correct. */
1122     if(image->type != ImageTypeMetafile){
1123         INT temp;
1124         temp = pti[0].y;
1125         pti[0].y = pti[2].y;
1126         pti[2].y = temp;
1127     }
1128
1129     if(IPicture_Render(image->picture, graphics->hdc,
1130         pti[0].x, pti[0].y, pti[1].x - pti[0].x, pti[2].y - pti[0].y,
1131         srcx * dx, srcy * dy,
1132         srcwidth * dx, srcheight * dy,
1133         NULL) != S_OK){
1134         if(callback)
1135             callback(callbackData);
1136         return GenericError;
1137     }
1138
1139     return Ok;
1140 }
1141
1142 GpStatus WINGDIPAPI GdipDrawImageRectRect(GpGraphics *graphics, GpImage *image,
1143     REAL dstx, REAL dsty, REAL dstwidth, REAL dstheight, REAL srcx, REAL srcy,
1144     REAL srcwidth, REAL srcheight, GpUnit srcUnit,
1145     GDIPCONST GpImageAttributes* imageattr, DrawImageAbort callback,
1146     VOID * callbackData)
1147 {
1148     GpPointF points[3];
1149
1150     points[0].X = dstx;
1151     points[0].Y = dsty;
1152     points[1].X = dstx + dstwidth;
1153     points[1].Y = dsty;
1154     points[2].X = dstx;
1155     points[2].Y = dsty + dstheight;
1156
1157     return GdipDrawImagePointsRect(graphics, image, points, 3, srcx, srcy,
1158                srcwidth, srcheight, srcUnit, imageattr, callback, callbackData);
1159 }
1160
1161 GpStatus WINGDIPAPI GdipDrawImageRectRectI(GpGraphics *graphics, GpImage *image,
1162         INT dstx, INT dsty, INT dstwidth, INT dstheight, INT srcx, INT srcy,
1163         INT srcwidth, INT srcheight, GpUnit srcUnit,
1164         GDIPCONST GpImageAttributes* imageAttributes, DrawImageAbort callback,
1165         VOID * callbackData)
1166 {
1167    GpPointF points[3];
1168
1169     points[0].X = dstx;
1170     points[0].Y = dsty;
1171     points[1].X = dstx + dstwidth;
1172     points[1].Y = dsty;
1173     points[2].X = dstx;
1174     points[2].Y = dsty + dstheight;
1175
1176     return GdipDrawImagePointsRect(graphics, image, points, 3, srcx, srcy,
1177                srcwidth, srcheight, srcUnit, imageAttributes, callback, callbackData);
1178 }
1179
1180 GpStatus WINGDIPAPI GdipDrawLine(GpGraphics *graphics, GpPen *pen, REAL x1,
1181     REAL y1, REAL x2, REAL y2)
1182 {
1183     INT save_state;
1184     GpPointF pt[2];
1185     GpStatus retval;
1186
1187     if(!pen || !graphics)
1188         return InvalidParameter;
1189
1190     pt[0].X = x1;
1191     pt[0].Y = y1;
1192     pt[1].X = x2;
1193     pt[1].Y = y2;
1194
1195     save_state = prepare_dc(graphics, pen);
1196
1197     retval = draw_polyline(graphics, pen, pt, 2, TRUE);
1198
1199     restore_dc(graphics, save_state);
1200
1201     return retval;
1202 }
1203
1204 GpStatus WINGDIPAPI GdipDrawLineI(GpGraphics *graphics, GpPen *pen, INT x1,
1205     INT y1, INT x2, INT y2)
1206 {
1207     INT save_state;
1208     GpPointF pt[2];
1209     GpStatus retval;
1210
1211     if(!pen || !graphics)
1212         return InvalidParameter;
1213
1214     pt[0].X = (REAL)x1;
1215     pt[0].Y = (REAL)y1;
1216     pt[1].X = (REAL)x2;
1217     pt[1].Y = (REAL)y2;
1218
1219     save_state = prepare_dc(graphics, pen);
1220
1221     retval = draw_polyline(graphics, pen, pt, 2, TRUE);
1222
1223     restore_dc(graphics, save_state);
1224
1225     return retval;
1226 }
1227
1228 GpStatus WINGDIPAPI GdipDrawLines(GpGraphics *graphics, GpPen *pen, GDIPCONST
1229     GpPointF *points, INT count)
1230 {
1231     INT save_state;
1232     GpStatus retval;
1233
1234     if(!pen || !graphics || (count < 2))
1235         return InvalidParameter;
1236
1237     save_state = prepare_dc(graphics, pen);
1238
1239     retval = draw_polyline(graphics, pen, points, count, TRUE);
1240
1241     restore_dc(graphics, save_state);
1242
1243     return retval;
1244 }
1245
1246 GpStatus WINGDIPAPI GdipDrawLinesI(GpGraphics *graphics, GpPen *pen, GDIPCONST
1247     GpPoint *points, INT count)
1248 {
1249     INT save_state;
1250     GpStatus retval;
1251     GpPointF *ptf = NULL;
1252     int i;
1253
1254     if(!pen || !graphics || (count < 2))
1255         return InvalidParameter;
1256
1257     ptf = GdipAlloc(count * sizeof(GpPointF));
1258     if(!ptf) return OutOfMemory;
1259
1260     for(i = 0; i < count; i ++){
1261         ptf[i].X = (REAL) points[i].X;
1262         ptf[i].Y = (REAL) points[i].Y;
1263     }
1264
1265     save_state = prepare_dc(graphics, pen);
1266
1267     retval = draw_polyline(graphics, pen, ptf, count, TRUE);
1268
1269     restore_dc(graphics, save_state);
1270
1271     GdipFree(ptf);
1272     return retval;
1273 }
1274
1275 GpStatus WINGDIPAPI GdipDrawPath(GpGraphics *graphics, GpPen *pen, GpPath *path)
1276 {
1277     INT save_state;
1278     GpStatus retval;
1279
1280     if(!pen || !graphics)
1281         return InvalidParameter;
1282
1283     save_state = prepare_dc(graphics, pen);
1284
1285     retval = draw_poly(graphics, pen, path->pathdata.Points,
1286                        path->pathdata.Types, path->pathdata.Count, TRUE);
1287
1288     restore_dc(graphics, save_state);
1289
1290     return retval;
1291 }
1292
1293 GpStatus WINGDIPAPI GdipDrawPie(GpGraphics *graphics, GpPen *pen, REAL x,
1294     REAL y, REAL width, REAL height, REAL startAngle, REAL sweepAngle)
1295 {
1296     INT save_state;
1297
1298     if(!graphics || !pen)
1299         return InvalidParameter;
1300
1301     save_state = prepare_dc(graphics, pen);
1302     SelectObject(graphics->hdc, GetStockObject(NULL_BRUSH));
1303
1304     draw_pie(graphics, x, y, width, height, startAngle, sweepAngle);
1305
1306     restore_dc(graphics, save_state);
1307
1308     return Ok;
1309 }
1310
1311 GpStatus WINGDIPAPI GdipDrawRectangleI(GpGraphics *graphics, GpPen *pen, INT x,
1312     INT y, INT width, INT height)
1313 {
1314     INT save_state;
1315     GpPointF ptf[4];
1316     POINT pti[4];
1317
1318     if(!pen || !graphics)
1319         return InvalidParameter;
1320
1321     ptf[0].X = x;
1322     ptf[0].Y = y;
1323     ptf[1].X = x + width;
1324     ptf[1].Y = y;
1325     ptf[2].X = x + width;
1326     ptf[2].Y = y + height;
1327     ptf[3].X = x;
1328     ptf[3].Y = y + height;
1329
1330     save_state = prepare_dc(graphics, pen);
1331     SelectObject(graphics->hdc, GetStockObject(NULL_BRUSH));
1332
1333     transform_and_round_points(graphics, pti, ptf, 4);
1334     Polygon(graphics->hdc, pti, 4);
1335
1336     restore_dc(graphics, save_state);
1337
1338     return Ok;
1339 }
1340
1341 GpStatus WINGDIPAPI GdipDrawRectangles(GpGraphics *graphics, GpPen *pen,
1342     GDIPCONST GpRectF* rects, INT count)
1343 {
1344     GpPointF *ptf;
1345     POINT *pti;
1346     INT save_state, i;
1347
1348     if(!graphics || !pen || !rects || count < 1)
1349         return InvalidParameter;
1350
1351     ptf = GdipAlloc(4 * count * sizeof(GpPointF));
1352     pti = GdipAlloc(4 * count * sizeof(POINT));
1353
1354     if(!ptf || !pti){
1355         GdipFree(ptf);
1356         GdipFree(pti);
1357         return OutOfMemory;
1358     }
1359
1360     for(i = 0; i < count; i++){
1361         ptf[4 * i + 3].X = ptf[4 * i].X = rects[i].X;
1362         ptf[4 * i + 1].Y = ptf[4 * i].Y = rects[i].Y;
1363         ptf[4 * i + 2].X = ptf[4 * i + 1].X = rects[i].X + rects[i].Width;
1364         ptf[4 * i + 3].Y = ptf[4 * i + 2].Y = rects[i].Y + rects[i].Height;
1365     }
1366
1367     save_state = prepare_dc(graphics, pen);
1368     SelectObject(graphics->hdc, GetStockObject(NULL_BRUSH));
1369
1370     transform_and_round_points(graphics, pti, ptf, 4 * count);
1371
1372     for(i = 0; i < count; i++)
1373         Polygon(graphics->hdc, &pti[4 * i], 4);
1374
1375     restore_dc(graphics, save_state);
1376
1377     GdipFree(ptf);
1378     GdipFree(pti);
1379
1380     return Ok;
1381 }
1382
1383 GpStatus WINGDIPAPI GdipDrawString(GpGraphics *graphics, GDIPCONST WCHAR *string,
1384     INT length, GDIPCONST GpFont *font, GDIPCONST RectF *rect,
1385     GDIPCONST GpStringFormat *format, GDIPCONST GpBrush *brush)
1386 {
1387     HRGN rgn = NULL;
1388     HFONT gdifont;
1389     LOGFONTW lfw;
1390     TEXTMETRICW textmet;
1391     GpPointF pt[2], rectcpy[4];
1392     POINT corners[4];
1393     WCHAR* stringdup;
1394     REAL angle, ang_cos, ang_sin, rel_width, rel_height;
1395     INT sum = 0, height = 0, fit, fitcpy, save_state, i, j, lret, nwidth,
1396         nheight;
1397     SIZE size;
1398     RECT drawcoord;
1399
1400     if(!graphics || !string || !font || !brush || !rect)
1401         return InvalidParameter;
1402
1403     if((brush->bt != BrushTypeSolidColor)){
1404         FIXME("not implemented for given parameters\n");
1405         return NotImplemented;
1406     }
1407
1408     if(format)
1409         TRACE("may be ignoring some format flags: attr %x\n", format->attr);
1410
1411     if(length == -1) length = lstrlenW(string);
1412
1413     stringdup = GdipAlloc(length * sizeof(WCHAR));
1414     if(!stringdup) return OutOfMemory;
1415
1416     save_state = SaveDC(graphics->hdc);
1417     SetBkMode(graphics->hdc, TRANSPARENT);
1418     SetTextColor(graphics->hdc, brush->lb.lbColor);
1419
1420     rectcpy[3].X = rectcpy[0].X = rect->X;
1421     rectcpy[1].Y = rectcpy[0].Y = rect->Y;
1422     rectcpy[2].X = rectcpy[1].X = rect->X + rect->Width;
1423     rectcpy[3].Y = rectcpy[2].Y = rect->Y + rect->Height;
1424     transform_and_round_points(graphics, corners, rectcpy, 4);
1425
1426     if(roundr(rect->Width) == 0 && roundr(rect->Height) == 0){
1427         rel_width = rel_height = 1.0;
1428         nwidth = nheight = INT_MAX;
1429     }
1430     else{
1431         rel_width = sqrt((corners[1].x - corners[0].x) * (corners[1].x - corners[0].x) +
1432                          (corners[1].y - corners[0].y) * (corners[1].y - corners[0].y))
1433                          / rect->Width;
1434         rel_height = sqrt((corners[2].x - corners[1].x) * (corners[2].x - corners[1].x) +
1435                           (corners[2].y - corners[1].y) * (corners[2].y - corners[1].y))
1436                           / rect->Height;
1437
1438         nwidth = roundr(rel_width * rect->Width);
1439         nheight = roundr(rel_height * rect->Height);
1440         rgn = CreatePolygonRgn(corners, 4, ALTERNATE);
1441         SelectClipRgn(graphics->hdc, rgn);
1442     }
1443
1444     /* Use gdi to find the font, then perform transformations on it (height,
1445      * width, angle). */
1446     SelectObject(graphics->hdc, CreateFontIndirectW(&font->lfw));
1447     GetTextMetricsW(graphics->hdc, &textmet);
1448     lfw = font->lfw;
1449
1450     lfw.lfHeight = roundr(((REAL)lfw.lfHeight) * rel_height);
1451     lfw.lfWidth = roundr(textmet.tmAveCharWidth * rel_width);
1452
1453     pt[0].X = 0.0;
1454     pt[0].Y = 0.0;
1455     pt[1].X = 1.0;
1456     pt[1].Y = 0.0;
1457     GdipTransformMatrixPoints(graphics->worldtrans, pt, 2);
1458     angle = gdiplus_atan2((pt[1].Y - pt[0].Y), (pt[1].X - pt[0].X));
1459     ang_cos = cos(angle);
1460     ang_sin = sin(angle);
1461     lfw.lfEscapement = lfw.lfOrientation = -roundr((angle / M_PI) * 1800.0);
1462
1463     gdifont = CreateFontIndirectW(&lfw);
1464     DeleteObject(SelectObject(graphics->hdc, CreateFontIndirectW(&lfw)));
1465
1466     for(i = 0, j = 0; i < length; i++){
1467         if(!isprint(string[i]) && (string[i] != '\n'))
1468             continue;
1469
1470         stringdup[j] = string[i];
1471         j++;
1472     }
1473
1474     stringdup[j] = 0;
1475     length = j;
1476
1477     while(sum < length){
1478         drawcoord.left = corners[0].x + roundr(ang_sin * (REAL) height);
1479         drawcoord.top = corners[0].y + roundr(ang_cos * (REAL) height);
1480
1481         GetTextExtentExPointW(graphics->hdc, stringdup + sum, length - sum,
1482                               nwidth, &fit, NULL, &size);
1483         fitcpy = fit;
1484
1485         if(fit == 0){
1486             DrawTextW(graphics->hdc, stringdup + sum, 1, &drawcoord, DT_NOCLIP |
1487                       DT_EXPANDTABS);
1488             break;
1489         }
1490
1491         for(lret = 0; lret < fit; lret++)
1492             if(*(stringdup + sum + lret) == '\n')
1493                 break;
1494
1495         /* Line break code (may look strange, but it imitates windows). */
1496         if(lret < fit)
1497             fit = lret;    /* this is not an off-by-one error */
1498         else if(fit < (length - sum)){
1499             if(*(stringdup + sum + fit) == ' ')
1500                 while(*(stringdup + sum + fit) == ' ')
1501                     fit++;
1502             else
1503                 while(*(stringdup + sum + fit - 1) != ' '){
1504                     fit--;
1505
1506                     if(*(stringdup + sum + fit) == '\t')
1507                         break;
1508
1509                     if(fit == 0){
1510                         fit = fitcpy;
1511                         break;
1512                     }
1513                 }
1514         }
1515         DrawTextW(graphics->hdc, stringdup + sum, min(length - sum, fit),
1516                   &drawcoord, DT_NOCLIP | DT_EXPANDTABS);
1517
1518         sum += fit + (lret < fitcpy ? 1 : 0);
1519         height += size.cy;
1520
1521         if(height > nheight)
1522             break;
1523
1524         /* Stop if this was a linewrap (but not if it was a linebreak). */
1525         if((lret == fitcpy) && format && (format->attr & StringFormatFlagsNoWrap))
1526             break;
1527     }
1528
1529     GdipFree(stringdup);
1530     DeleteObject(rgn);
1531     DeleteObject(gdifont);
1532
1533     RestoreDC(graphics->hdc, save_state);
1534
1535     return Ok;
1536 }
1537
1538 GpStatus WINGDIPAPI GdipFillPath(GpGraphics *graphics, GpBrush *brush, GpPath *path)
1539 {
1540     INT save_state;
1541     GpStatus retval;
1542
1543     if(!brush || !graphics || !path)
1544         return InvalidParameter;
1545
1546     save_state = SaveDC(graphics->hdc);
1547     EndPath(graphics->hdc);
1548     SelectObject(graphics->hdc, brush->gdibrush);
1549     SetPolyFillMode(graphics->hdc, (path->fill == FillModeAlternate ? ALTERNATE
1550                                                                     : WINDING));
1551
1552     BeginPath(graphics->hdc);
1553     retval = draw_poly(graphics, NULL, path->pathdata.Points,
1554                        path->pathdata.Types, path->pathdata.Count, FALSE);
1555
1556     if(retval != Ok)
1557         goto end;
1558
1559     EndPath(graphics->hdc);
1560     FillPath(graphics->hdc);
1561
1562     retval = Ok;
1563
1564 end:
1565     RestoreDC(graphics->hdc, save_state);
1566
1567     return retval;
1568 }
1569
1570 GpStatus WINGDIPAPI GdipFillPie(GpGraphics *graphics, GpBrush *brush, REAL x,
1571     REAL y, REAL width, REAL height, REAL startAngle, REAL sweepAngle)
1572 {
1573     INT save_state;
1574
1575     if(!graphics || !brush)
1576         return InvalidParameter;
1577
1578     save_state = SaveDC(graphics->hdc);
1579     EndPath(graphics->hdc);
1580     SelectObject(graphics->hdc, brush->gdibrush);
1581     SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
1582
1583     draw_pie(graphics, x, y, width, height, startAngle, sweepAngle);
1584
1585     RestoreDC(graphics->hdc, save_state);
1586
1587     return Ok;
1588 }
1589
1590 GpStatus WINGDIPAPI GdipFillPolygon(GpGraphics *graphics, GpBrush *brush,
1591     GDIPCONST GpPointF *points, INT count, GpFillMode fillMode)
1592 {
1593     INT save_state;
1594     GpPointF *ptf = NULL;
1595     POINT *pti = NULL;
1596     GpStatus retval = Ok;
1597
1598     if(!graphics || !brush || !points || !count)
1599         return InvalidParameter;
1600
1601     ptf = GdipAlloc(count * sizeof(GpPointF));
1602     pti = GdipAlloc(count * sizeof(POINT));
1603     if(!ptf || !pti){
1604         retval = OutOfMemory;
1605         goto end;
1606     }
1607
1608     memcpy(ptf, points, count * sizeof(GpPointF));
1609
1610     save_state = SaveDC(graphics->hdc);
1611     EndPath(graphics->hdc);
1612     SelectObject(graphics->hdc, brush->gdibrush);
1613     SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
1614     SetPolyFillMode(graphics->hdc, (fillMode == FillModeAlternate ? ALTERNATE
1615                                                                   : WINDING));
1616
1617     transform_and_round_points(graphics, pti, ptf, count);
1618     Polygon(graphics->hdc, pti, count);
1619
1620     RestoreDC(graphics->hdc, save_state);
1621
1622 end:
1623     GdipFree(ptf);
1624     GdipFree(pti);
1625
1626     return retval;
1627 }
1628
1629 GpStatus WINGDIPAPI GdipFillPolygonI(GpGraphics *graphics, GpBrush *brush,
1630     GDIPCONST GpPoint *points, INT count, GpFillMode fillMode)
1631 {
1632     INT save_state, i;
1633     GpPointF *ptf = NULL;
1634     POINT *pti = NULL;
1635     GpStatus retval = Ok;
1636
1637     if(!graphics || !brush || !points || !count)
1638         return InvalidParameter;
1639
1640     ptf = GdipAlloc(count * sizeof(GpPointF));
1641     pti = GdipAlloc(count * sizeof(POINT));
1642     if(!ptf || !pti){
1643         retval = OutOfMemory;
1644         goto end;
1645     }
1646
1647     for(i = 0; i < count; i ++){
1648         ptf[i].X = (REAL) points[i].X;
1649         ptf[i].Y = (REAL) points[i].Y;
1650     }
1651
1652     save_state = SaveDC(graphics->hdc);
1653     EndPath(graphics->hdc);
1654     SelectObject(graphics->hdc, brush->gdibrush);
1655     SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
1656     SetPolyFillMode(graphics->hdc, (fillMode == FillModeAlternate ? ALTERNATE
1657                                                                   : WINDING));
1658
1659     transform_and_round_points(graphics, pti, ptf, count);
1660     Polygon(graphics->hdc, pti, count);
1661
1662     RestoreDC(graphics->hdc, save_state);
1663
1664 end:
1665     GdipFree(ptf);
1666     GdipFree(pti);
1667
1668     return retval;
1669 }
1670
1671 GpStatus WINGDIPAPI GdipFillRectangle(GpGraphics *graphics, GpBrush *brush,
1672     REAL x, REAL y, REAL width, REAL height)
1673 {
1674     INT save_state;
1675     GpPointF ptf[4];
1676     POINT pti[4];
1677
1678     if(!graphics || !brush)
1679         return InvalidParameter;
1680
1681     ptf[0].X = x;
1682     ptf[0].Y = y;
1683     ptf[1].X = x + width;
1684     ptf[1].Y = y;
1685     ptf[2].X = x + width;
1686     ptf[2].Y = y + height;
1687     ptf[3].X = x;
1688     ptf[3].Y = y + height;
1689
1690     save_state = SaveDC(graphics->hdc);
1691     EndPath(graphics->hdc);
1692     SelectObject(graphics->hdc, brush->gdibrush);
1693     SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
1694
1695     transform_and_round_points(graphics, pti, ptf, 4);
1696
1697     Polygon(graphics->hdc, pti, 4);
1698
1699     RestoreDC(graphics->hdc, save_state);
1700
1701     return Ok;
1702 }
1703
1704 GpStatus WINGDIPAPI GdipFillRectangleI(GpGraphics *graphics, GpBrush *brush,
1705     INT x, INT y, INT width, INT height)
1706 {
1707     INT save_state;
1708     GpPointF ptf[4];
1709     POINT pti[4];
1710
1711     if(!graphics || !brush)
1712         return InvalidParameter;
1713
1714     ptf[0].X = x;
1715     ptf[0].Y = y;
1716     ptf[1].X = x + width;
1717     ptf[1].Y = y;
1718     ptf[2].X = x + width;
1719     ptf[2].Y = y + height;
1720     ptf[3].X = x;
1721     ptf[3].Y = y + height;
1722
1723     save_state = SaveDC(graphics->hdc);
1724     EndPath(graphics->hdc);
1725     SelectObject(graphics->hdc, brush->gdibrush);
1726     SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
1727
1728     transform_and_round_points(graphics, pti, ptf, 4);
1729
1730     Polygon(graphics->hdc, pti, 4);
1731
1732     RestoreDC(graphics->hdc, save_state);
1733
1734     return Ok;
1735 }
1736
1737 /* FIXME: Compositing mode is not used anywhere except the getter/setter. */
1738 GpStatus WINGDIPAPI GdipGetCompositingMode(GpGraphics *graphics,
1739     CompositingMode *mode)
1740 {
1741     if(!graphics || !mode)
1742         return InvalidParameter;
1743
1744     *mode = graphics->compmode;
1745
1746     return Ok;
1747 }
1748
1749 /* FIXME: Compositing quality is not used anywhere except the getter/setter. */
1750 GpStatus WINGDIPAPI GdipGetCompositingQuality(GpGraphics *graphics,
1751     CompositingQuality *quality)
1752 {
1753     if(!graphics || !quality)
1754         return InvalidParameter;
1755
1756     *quality = graphics->compqual;
1757
1758     return Ok;
1759 }
1760
1761 /* FIXME: Interpolation mode is not used anywhere except the getter/setter. */
1762 GpStatus WINGDIPAPI GdipGetInterpolationMode(GpGraphics *graphics,
1763     InterpolationMode *mode)
1764 {
1765     if(!graphics || !mode)
1766         return InvalidParameter;
1767
1768     *mode = graphics->interpolation;
1769
1770     return Ok;
1771 }
1772
1773 GpStatus WINGDIPAPI GdipGetPageScale(GpGraphics *graphics, REAL *scale)
1774 {
1775     if(!graphics || !scale)
1776         return InvalidParameter;
1777
1778     *scale = graphics->scale;
1779
1780     return Ok;
1781 }
1782
1783 GpStatus WINGDIPAPI GdipGetPageUnit(GpGraphics *graphics, GpUnit *unit)
1784 {
1785     if(!graphics || !unit)
1786         return InvalidParameter;
1787
1788     *unit = graphics->unit;
1789
1790     return Ok;
1791 }
1792
1793 /* FIXME: Pixel offset mode is not used anywhere except the getter/setter. */
1794 GpStatus WINGDIPAPI GdipGetPixelOffsetMode(GpGraphics *graphics, PixelOffsetMode
1795     *mode)
1796 {
1797     if(!graphics || !mode)
1798         return InvalidParameter;
1799
1800     *mode = graphics->pixeloffset;
1801
1802     return Ok;
1803 }
1804
1805 /* FIXME: Smoothing mode is not used anywhere except the getter/setter. */
1806 GpStatus WINGDIPAPI GdipGetSmoothingMode(GpGraphics *graphics, SmoothingMode *mode)
1807 {
1808     if(!graphics || !mode)
1809         return InvalidParameter;
1810
1811     *mode = graphics->smoothing;
1812
1813     return Ok;
1814 }
1815
1816 /* FIXME: Text rendering hint is not used anywhere except the getter/setter. */
1817 GpStatus WINGDIPAPI GdipGetTextRenderingHint(GpGraphics *graphics,
1818     TextRenderingHint *hint)
1819 {
1820     if(!graphics || !hint)
1821         return InvalidParameter;
1822
1823     *hint = graphics->texthint;
1824
1825     return Ok;
1826 }
1827
1828 GpStatus WINGDIPAPI GdipGetWorldTransform(GpGraphics *graphics, GpMatrix *matrix)
1829 {
1830     if(!graphics || !matrix)
1831         return InvalidParameter;
1832
1833     *matrix = *graphics->worldtrans;
1834     return Ok;
1835 }
1836
1837 /* Find the smallest rectangle that bounds the text when it is printed in rect
1838  * according to the format options listed in format. If rect has 0 width and
1839  * height, then just find the smallest rectangle that bounds the text when it's
1840  * printed at location (rect->X, rect-Y). */
1841 GpStatus WINGDIPAPI GdipMeasureString(GpGraphics *graphics,
1842     GDIPCONST WCHAR *string, INT length, GDIPCONST GpFont *font,
1843     GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format, RectF *bounds,
1844     INT *codepointsfitted, INT *linesfilled)
1845 {
1846     HFONT oldfont;
1847     WCHAR* stringdup;
1848     INT sum = 0, height = 0, fit, fitcpy, max_width = 0, i, j, lret, nwidth,
1849         nheight;
1850     SIZE size;
1851
1852     if(!graphics || !string || !font || !rect)
1853         return InvalidParameter;
1854
1855     if(codepointsfitted || linesfilled){
1856         FIXME("not implemented for given parameters\n");
1857         return NotImplemented;
1858     }
1859
1860     if(format)
1861         TRACE("may be ignoring some format flags: attr %x\n", format->attr);
1862
1863     if(length == -1) length = lstrlenW(string);
1864
1865     stringdup = GdipAlloc(length * sizeof(WCHAR));
1866     if(!stringdup) return OutOfMemory;
1867
1868     oldfont = SelectObject(graphics->hdc, CreateFontIndirectW(&font->lfw));
1869     nwidth = roundr(rect->Width);
1870     nheight = roundr(rect->Height);
1871
1872     if((nwidth == 0) && (nheight == 0))
1873         nwidth = nheight = INT_MAX;
1874
1875     for(i = 0, j = 0; i < length; i++){
1876         if(!isprint(string[i]) && (string[i] != '\n'))
1877             continue;
1878
1879         stringdup[j] = string[i];
1880         j++;
1881     }
1882
1883     stringdup[j] = 0;
1884     length = j;
1885
1886     while(sum < length){
1887         GetTextExtentExPointW(graphics->hdc, stringdup + sum, length - sum,
1888                               nwidth, &fit, NULL, &size);
1889         fitcpy = fit;
1890
1891         if(fit == 0)
1892             break;
1893
1894         for(lret = 0; lret < fit; lret++)
1895             if(*(stringdup + sum + lret) == '\n')
1896                 break;
1897
1898         /* Line break code (may look strange, but it imitates windows). */
1899         if(lret < fit)
1900             fit = lret;    /* this is not an off-by-one error */
1901         else if(fit < (length - sum)){
1902             if(*(stringdup + sum + fit) == ' ')
1903                 while(*(stringdup + sum + fit) == ' ')
1904                     fit++;
1905             else
1906                 while(*(stringdup + sum + fit - 1) != ' '){
1907                     fit--;
1908
1909                     if(*(stringdup + sum + fit) == '\t')
1910                         break;
1911
1912                     if(fit == 0){
1913                         fit = fitcpy;
1914                         break;
1915                     }
1916                 }
1917         }
1918
1919         GetTextExtentExPointW(graphics->hdc, stringdup + sum, fit,
1920                               nwidth, &j, NULL, &size);
1921
1922         sum += fit + (lret < fitcpy ? 1 : 0);
1923         height += size.cy;
1924         max_width = max(max_width, size.cx);
1925
1926         if(height > nheight)
1927             break;
1928
1929         /* Stop if this was a linewrap (but not if it was a linebreak). */
1930         if((lret == fitcpy) && format && (format->attr & StringFormatFlagsNoWrap))
1931             break;
1932     }
1933
1934     bounds->X = rect->X;
1935     bounds->Y = rect->Y;
1936     bounds->Width = (REAL)max_width;
1937     bounds->Height = (REAL) min(height, nheight);
1938
1939     GdipFree(stringdup);
1940     DeleteObject(SelectObject(graphics->hdc, oldfont));
1941
1942     return Ok;
1943 }
1944
1945 GpStatus WINGDIPAPI GdipRestoreGraphics(GpGraphics *graphics, GraphicsState state)
1946 {
1947     static int calls;
1948
1949     if(!graphics)
1950         return InvalidParameter;
1951
1952     if(!(calls++))
1953         FIXME("graphics state not implemented\n");
1954
1955     return NotImplemented;
1956 }
1957
1958 GpStatus WINGDIPAPI GdipRotateWorldTransform(GpGraphics *graphics, REAL angle,
1959     GpMatrixOrder order)
1960 {
1961     if(!graphics)
1962         return InvalidParameter;
1963
1964     return GdipRotateMatrix(graphics->worldtrans, angle, order);
1965 }
1966
1967 GpStatus WINGDIPAPI GdipSaveGraphics(GpGraphics *graphics, GraphicsState *state)
1968 {
1969     static int calls;
1970
1971     if(!graphics || !state)
1972         return InvalidParameter;
1973
1974     if(!(calls++))
1975         FIXME("graphics state not implemented\n");
1976
1977     return NotImplemented;
1978 }
1979
1980 GpStatus WINGDIPAPI GdipScaleWorldTransform(GpGraphics *graphics, REAL sx,
1981     REAL sy, GpMatrixOrder order)
1982 {
1983     if(!graphics)
1984         return InvalidParameter;
1985
1986     return GdipScaleMatrix(graphics->worldtrans, sx, sy, order);
1987 }
1988
1989 GpStatus WINGDIPAPI GdipSetCompositingMode(GpGraphics *graphics,
1990     CompositingMode mode)
1991 {
1992     if(!graphics)
1993         return InvalidParameter;
1994
1995     graphics->compmode = mode;
1996
1997     return Ok;
1998 }
1999
2000 GpStatus WINGDIPAPI GdipSetCompositingQuality(GpGraphics *graphics,
2001     CompositingQuality quality)
2002 {
2003     if(!graphics)
2004         return InvalidParameter;
2005
2006     graphics->compqual = quality;
2007
2008     return Ok;
2009 }
2010
2011 GpStatus WINGDIPAPI GdipSetInterpolationMode(GpGraphics *graphics,
2012     InterpolationMode mode)
2013 {
2014     if(!graphics)
2015         return InvalidParameter;
2016
2017     graphics->interpolation = mode;
2018
2019     return Ok;
2020 }
2021
2022 GpStatus WINGDIPAPI GdipSetPageScale(GpGraphics *graphics, REAL scale)
2023 {
2024     if(!graphics || (scale <= 0.0))
2025         return InvalidParameter;
2026
2027     graphics->scale = scale;
2028
2029     return Ok;
2030 }
2031
2032 GpStatus WINGDIPAPI GdipSetPageUnit(GpGraphics *graphics, GpUnit unit)
2033 {
2034     if(!graphics || (unit == UnitWorld))
2035         return InvalidParameter;
2036
2037     graphics->unit = unit;
2038
2039     return Ok;
2040 }
2041
2042 GpStatus WINGDIPAPI GdipSetPixelOffsetMode(GpGraphics *graphics, PixelOffsetMode
2043     mode)
2044 {
2045     if(!graphics)
2046         return InvalidParameter;
2047
2048     graphics->pixeloffset = mode;
2049
2050     return Ok;
2051 }
2052
2053 GpStatus WINGDIPAPI GdipSetSmoothingMode(GpGraphics *graphics, SmoothingMode mode)
2054 {
2055     if(!graphics)
2056         return InvalidParameter;
2057
2058     graphics->smoothing = mode;
2059
2060     return Ok;
2061 }
2062
2063 GpStatus WINGDIPAPI GdipSetTextRenderingHint(GpGraphics *graphics,
2064     TextRenderingHint hint)
2065 {
2066     if(!graphics)
2067         return InvalidParameter;
2068
2069     graphics->texthint = hint;
2070
2071     return Ok;
2072 }
2073
2074 GpStatus WINGDIPAPI GdipSetWorldTransform(GpGraphics *graphics, GpMatrix *matrix)
2075 {
2076     if(!graphics || !matrix)
2077         return InvalidParameter;
2078
2079     GdipDeleteMatrix(graphics->worldtrans);
2080     return GdipCloneMatrix(matrix, &graphics->worldtrans);
2081 }
2082
2083 GpStatus WINGDIPAPI GdipTranslateWorldTransform(GpGraphics *graphics, REAL dx,
2084     REAL dy, GpMatrixOrder order)
2085 {
2086     if(!graphics)
2087         return InvalidParameter;
2088
2089     return GdipTranslateMatrix(graphics->worldtrans, dx, dy, order);
2090 }
2091
2092 GpStatus WINGDIPAPI GdipSetClipRectI(GpGraphics *graphics, INT x, INT y,
2093                                      INT width, INT height,
2094                                      CombineMode combineMode)
2095 {
2096     static int calls;
2097
2098     if(!(calls++))
2099         FIXME("not implemented\n");
2100
2101     return NotImplemented;
2102 }
2103
2104 GpStatus WINGDIPAPI GdipSetClipRegion(GpGraphics *graphics, GpRegion *region,
2105                                      CombineMode combineMode)
2106 {
2107     static int calls;
2108
2109     if(!(calls++))
2110         FIXME("not implemented\n");
2111
2112     return NotImplemented;
2113 }
2114
2115 GpStatus WINGDIPAPI GdipSetMetafileDownLevelRasterizationLimit(GpGraphics *graphics,
2116     UINT limitDpi)
2117 {
2118     static int calls;
2119
2120     if(!(calls++))
2121         FIXME("not implemented\n");
2122
2123     return NotImplemented;
2124 }