dlls/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 /* FIXME: no icm handling */
 801 GpStatus WINGDIPAPI GdipCreateFromHWNDICM(HWND hwnd, GpGraphics **graphics)
 802 {
 803     return GdipCreateFromHWND(hwnd, graphics);
 804 }
 805
 806 GpStatus WINGDIPAPI GdipCreateMetafileFromEmf(HENHMETAFILE hemf, BOOL delete,
 807     GpMetafile **metafile)
 808 {
 809     static int calls;
 810
 811     if(!hemf || !metafile)
 812         return InvalidParameter;
 813
 814     if(!(calls++))
 815         FIXME("not implemented\n");
 816
 817     return NotImplemented;
 818 }
 819
 820 GpStatus WINGDIPAPI GdipCreateMetafileFromWmf(HMETAFILE hwmf, BOOL delete,
 821     GDIPCONST WmfPlaceableFileHeader * placeable, GpMetafile **metafile)
 822 {
 823     IStream *stream = NULL;
 824     UINT read;
 825     BYTE* copy;
 826     HENHMETAFILE hemf;
 827     GpStatus retval = GenericError;
 828
 829     if(!hwmf || !metafile || !placeable)
 830         return InvalidParameter;
 831
 832     *metafile = NULL;
 833     read = GetMetaFileBitsEx(hwmf, 0, NULL);
 834     if(!read)
 835         return GenericError;
 836     copy = GdipAlloc(read);
 837     GetMetaFileBitsEx(hwmf, read, copy);
 838
 839     hemf = SetWinMetaFileBits(read, copy, NULL, NULL);
 840     GdipFree(copy);
 841
 842     read = GetEnhMetaFileBits(hemf, 0, NULL);
 843     copy = GdipAlloc(read);
 844     GetEnhMetaFileBits(hemf, read, copy);
 845     DeleteEnhMetaFile(hemf);
 846
 847     if(CreateStreamOnHGlobal(copy, TRUE, &stream) != S_OK){
 848         ERR("could not make stream\n");
 849         GdipFree(copy);
 850         goto err;
 851     }
 852
 853     *metafile = GdipAlloc(sizeof(GpMetafile));
 854     if(!*metafile){
 855         retval = OutOfMemory;
 856         goto err;
 857     }
 858
 859     if(OleLoadPicture(stream, 0, FALSE, &IID_IPicture,
 860         (LPVOID*) &((*metafile)->image.picture)) != S_OK)
 861         goto err;
 862
 863
 864     (*metafile)->image.type = ImageTypeMetafile;
 865     (*metafile)->bounds.X = ((REAL) placeable->BoundingBox.Left) / ((REAL) placeable->Inch);
 866     (*metafile)->bounds.Y = ((REAL) placeable->BoundingBox.Right) / ((REAL) placeable->Inch);
 867     (*metafile)->bounds.Width = ((REAL) (placeable->BoundingBox.Right
 868                     - placeable->BoundingBox.Left)) / ((REAL) placeable->Inch);
 869     (*metafile)->bounds.Height = ((REAL) (placeable->BoundingBox.Bottom
 870                    - placeable->BoundingBox.Top)) / ((REAL) placeable->Inch);
 871     (*metafile)->unit = UnitInch;
 872
 873     if(delete)
 874         DeleteMetaFile(hwmf);
 875
 876     return Ok;
 877
 878 err:
 879     GdipFree(*metafile);
 880     IStream_Release(stream);
 881     return retval;
 882 }
 883
 884 GpStatus WINGDIPAPI GdipCreateStreamOnFile(GDIPCONST WCHAR * filename,
 885     UINT access, IStream **stream)
 886 {
 887     DWORD dwMode;
 888     HRESULT ret;
 889
 890     if(!stream || !filename)
 891         return InvalidParameter;
 892
 893     if(access & GENERIC_WRITE)
 894         dwMode = STGM_SHARE_DENY_WRITE | STGM_WRITE | STGM_CREATE;
 895     else if(access & GENERIC_READ)
 896         dwMode = STGM_SHARE_DENY_WRITE | STGM_READ | STGM_FAILIFTHERE;
 897     else
 898         return InvalidParameter;
 899
 900     ret = SHCreateStreamOnFileW(filename, dwMode, stream);
 901
 902     return hresult_to_status(ret);
 903 }
 904
 905 GpStatus WINGDIPAPI GdipDeleteGraphics(GpGraphics *graphics)
 906 {
 907     if(!graphics) return InvalidParameter;
 908     if(graphics->hwnd)
 909         ReleaseDC(graphics->hwnd, graphics->hdc);
 910
 911     GdipDeleteMatrix(graphics->worldtrans);
 912     HeapFree(GetProcessHeap(), 0, graphics);
 913
 914     return Ok;
 915 }
 916
 917 GpStatus WINGDIPAPI GdipDrawArc(GpGraphics *graphics, GpPen *pen, REAL x,
 918     REAL y, REAL width, REAL height, REAL startAngle, REAL sweepAngle)
 919 {
 920     INT save_state, num_pts;
 921     GpPointF points[MAX_ARC_PTS];
 922     GpStatus retval;
 923
 924     if(!graphics || !pen || width <= 0 || height <= 0)
 925         return InvalidParameter;
 926
 927     num_pts = arc2polybezier(points, x, y, width, height, startAngle, sweepAngle);
 928
 929     save_state = prepare_dc(graphics, pen);
 930
 931     retval = draw_polybezier(graphics, pen, points, num_pts, TRUE);
 932
 933     restore_dc(graphics, save_state);
 934
 935     return retval;
 936 }
 937
 938 GpStatus WINGDIPAPI GdipDrawArcI(GpGraphics *graphics, GpPen *pen, INT x,
 939     INT y, INT width, INT height, REAL startAngle, REAL sweepAngle)
 940 {
 941     return GdipDrawArc(graphics,pen,(REAL)x,(REAL)y,(REAL)width,(REAL)height,startAngle,sweepAngle);
 942 }
 943
 944 GpStatus WINGDIPAPI GdipDrawBezier(GpGraphics *graphics, GpPen *pen, REAL x1,
 945     REAL y1, REAL x2, REAL y2, REAL x3, REAL y3, REAL x4, REAL y4)
 946 {
 947     INT save_state;
 948     GpPointF pt[4];
 949     GpStatus retval;
 950
 951     if(!graphics || !pen)
 952         return InvalidParameter;
 953
 954     pt[0].X = x1;
 955     pt[0].Y = y1;
 956     pt[1].X = x2;
 957     pt[1].Y = y2;
 958     pt[2].X = x3;
 959     pt[2].Y = y3;
 960     pt[3].X = x4;
 961     pt[3].Y = y4;
 962
 963     save_state = prepare_dc(graphics, pen);
 964
 965     retval = draw_polybezier(graphics, pen, pt, 4, TRUE);
 966
 967     restore_dc(graphics, save_state);
 968
 969     return retval;
 970 }
 971
 972 GpStatus WINGDIPAPI GdipDrawBezierI(GpGraphics *graphics, GpPen *pen, INT x1,
 973     INT y1, INT x2, INT y2, INT x3, INT y3, INT x4, INT y4)
 974 {
 975     INT save_state;
 976     GpPointF pt[4];
 977     GpStatus retval;
 978
 979     if(!graphics || !pen)
 980         return InvalidParameter;
 981
 982     pt[0].X = x1;
 983     pt[0].Y = y1;
 984     pt[1].X = x2;
 985     pt[1].Y = y2;
 986     pt[2].X = x3;
 987     pt[2].Y = y3;
 988     pt[3].X = x4;
 989     pt[3].Y = y4;
 990
 991     save_state = prepare_dc(graphics, pen);
 992
 993     retval = draw_polybezier(graphics, pen, pt, 4, TRUE);
 994
 995     restore_dc(graphics, save_state);
 996
 997     return retval;
 998 }
 999
1000 GpStatus WINGDIPAPI GdipDrawCurve(GpGraphics *graphics, GpPen *pen,
1001     GDIPCONST GpPointF *points, INT count)
1002 {
1003     return GdipDrawCurve2(graphics,pen,points,count,1.0);
1004 }
1005
1006 GpStatus WINGDIPAPI GdipDrawCurveI(GpGraphics *graphics, GpPen *pen,
1007     GDIPCONST GpPoint *points, INT count)
1008 {
1009     GpPointF *pointsF;
1010     GpStatus ret;
1011     INT i;
1012
1013     if(!points || count <= 0)
1014         return InvalidParameter;
1015
1016     pointsF = GdipAlloc(sizeof(GpPointF)*count);
1017     if(!pointsF)
1018         return OutOfMemory;
1019
1020     for(i = 0; i < count; i++){
1021         pointsF[i].X = (REAL)points[i].X;
1022         pointsF[i].Y = (REAL)points[i].Y;
1023     }
1024
1025     ret = GdipDrawCurve(graphics,pen,pointsF,count);
1026     GdipFree(pointsF);
1027
1028     return ret;
1029 }
1030
1031 /* Approximates cardinal spline with Bezier curves. */
1032 GpStatus WINGDIPAPI GdipDrawCurve2(GpGraphics *graphics, GpPen *pen,
1033     GDIPCONST GpPointF *points, INT count, REAL tension)
1034 {
1035     /* PolyBezier expects count*3-2 points. */
1036     INT i, len_pt = count*3-2, save_state;
1037     GpPointF *pt;
1038     REAL x1, x2, y1, y2;
1039     GpStatus retval;
1040
1041     if(!graphics || !pen)
1042         return InvalidParameter;
1043
1044     pt = GdipAlloc(len_pt * sizeof(GpPointF));
1045     tension = tension * TENSION_CONST;
1046
1047     calc_curve_bezier_endp(points[0].X, points[0].Y, points[1].X, points[1].Y,
1048         tension, &x1, &y1);
1049
1050     pt[0].X = points[0].X;
1051     pt[0].Y = points[0].Y;
1052     pt[1].X = x1;
1053     pt[1].Y = y1;
1054
1055     for(i = 0; i < count-2; i++){
1056         calc_curve_bezier(&(points[i]), tension, &x1, &y1, &x2, &y2);
1057
1058         pt[3*i+2].X = x1;
1059         pt[3*i+2].Y = y1;
1060         pt[3*i+3].X = points[i+1].X;
1061         pt[3*i+3].Y = points[i+1].Y;
1062         pt[3*i+4].X = x2;
1063         pt[3*i+4].Y = y2;
1064     }
1065
1066     calc_curve_bezier_endp(points[count-1].X, points[count-1].Y,
1067         points[count-2].X, points[count-2].Y, tension, &x1, &y1);
1068
1069     pt[len_pt-2].X = x1;
1070     pt[len_pt-2].Y = y1;
1071     pt[len_pt-1].X = points[count-1].X;
1072     pt[len_pt-1].Y = points[count-1].Y;
1073
1074     save_state = prepare_dc(graphics, pen);
1075
1076     retval = draw_polybezier(graphics, pen, pt, len_pt, TRUE);
1077
1078     GdipFree(pt);
1079     restore_dc(graphics, save_state);
1080
1081     return retval;
1082 }
1083
1084 GpStatus WINGDIPAPI GdipDrawCurve2I(GpGraphics *graphics, GpPen *pen,
1085     GDIPCONST GpPoint *points, INT count, REAL tension)
1086 {
1087     GpPointF *pointsF;
1088     GpStatus ret;
1089     INT i;
1090
1091     if(!points || count <= 0)
1092         return InvalidParameter;
1093
1094     pointsF = GdipAlloc(sizeof(GpPointF)*count);
1095     if(!pointsF)
1096         return OutOfMemory;
1097
1098     for(i = 0; i < count; i++){
1099         pointsF[i].X = (REAL)points[i].X;
1100         pointsF[i].Y = (REAL)points[i].Y;
1101     }
1102
1103     ret = GdipDrawCurve2(graphics,pen,pointsF,count,tension);
1104     GdipFree(pointsF);
1105
1106     return ret;
1107 }
1108
1109 GpStatus WINGDIPAPI GdipDrawEllipse(GpGraphics *graphics, GpPen *pen, REAL x,
1110     REAL y, REAL width, REAL height)
1111 {
1112     INT save_state;
1113     GpPointF ptf[2];
1114     POINT pti[2];
1115
1116     if(!graphics || !pen)
1117         return InvalidParameter;
1118
1119     ptf[0].X = x;
1120     ptf[0].Y = y;
1121     ptf[1].X = x + width;
1122     ptf[1].Y = y + height;
1123
1124     save_state = prepare_dc(graphics, pen);
1125     SelectObject(graphics->hdc, GetStockObject(NULL_BRUSH));
1126
1127     transform_and_round_points(graphics, pti, ptf, 2);
1128
1129     Ellipse(graphics->hdc, pti[0].x, pti[0].y, pti[1].x, pti[1].y);
1130
1131     restore_dc(graphics, save_state);
1132
1133     return Ok;
1134 }
1135
1136 GpStatus WINGDIPAPI GdipDrawEllipseI(GpGraphics *graphics, GpPen *pen, INT x,
1137     INT y, INT width, INT height)
1138 {
1139     return GdipDrawEllipse(graphics,pen,(REAL)x,(REAL)y,(REAL)width,(REAL)height);
1140 }
1141
1142
1143 GpStatus WINGDIPAPI GdipDrawImage(GpGraphics *graphics, GpImage *image, REAL x, REAL y)
1144 {
1145     /* IPicture::Render uses LONG coords */
1146     return GdipDrawImageI(graphics,image,roundr(x),roundr(y));
1147 }
1148
1149 GpStatus WINGDIPAPI GdipDrawImageI(GpGraphics *graphics, GpImage *image, INT x,
1150     INT y)
1151 {
1152     UINT width, height, srcw, srch;
1153
1154     if(!graphics || !image)
1155         return InvalidParameter;
1156
1157     GdipGetImageWidth(image, &width);
1158     GdipGetImageHeight(image, &height);
1159
1160     srcw = width * (((REAL) INCH_HIMETRIC) /
1161             ((REAL) GetDeviceCaps(graphics->hdc, LOGPIXELSX)));
1162     srch = height * (((REAL) INCH_HIMETRIC) /
1163             ((REAL) GetDeviceCaps(graphics->hdc, LOGPIXELSY)));
1164
1165     if(image->type != ImageTypeMetafile){
1166         y += height;
1167         height *= -1;
1168     }
1169
1170     IPicture_Render(image->picture, graphics->hdc, x, y, width, height,
1171                     0, 0, srcw, srch, NULL);
1172
1173     return Ok;
1174 }
1175
1176 /* FIXME: partially implemented (only works for rectangular parallelograms) */
1177 GpStatus WINGDIPAPI GdipDrawImagePointsRect(GpGraphics *graphics, GpImage *image,
1178      GDIPCONST GpPointF *points, INT count, REAL srcx, REAL srcy, REAL srcwidth,
1179      REAL srcheight, GpUnit srcUnit, GDIPCONST GpImageAttributes* imageAttributes,
1180      DrawImageAbort callback, VOID * callbackData)
1181 {
1182     GpPointF ptf[3];
1183     POINT pti[3];
1184     REAL dx, dy;
1185
1186     TRACE("%p %p %p %d %f %f %f %f %d %p %p %p\n", graphics, image, points, count,
1187           srcx, srcy, srcwidth, srcheight, srcUnit, imageAttributes, callback,
1188           callbackData);
1189
1190     if(!graphics || !image || !points || count != 3)
1191          return InvalidParameter;
1192
1193     if(srcUnit == UnitInch)
1194         dx = dy = (REAL) INCH_HIMETRIC;
1195     else if(srcUnit == UnitPixel){
1196         dx = ((REAL) INCH_HIMETRIC) /
1197              ((REAL) GetDeviceCaps(graphics->hdc, LOGPIXELSX));
1198         dy = ((REAL) INCH_HIMETRIC) /
1199              ((REAL) GetDeviceCaps(graphics->hdc, LOGPIXELSY));
1200     }
1201     else
1202         return NotImplemented;
1203
1204     memcpy(ptf, points, 3 * sizeof(GpPointF));
1205     transform_and_round_points(graphics, pti, ptf, 3);
1206
1207     /* IPicture renders bitmaps with the y-axis reversed
1208      * FIXME: flipping for unknown image type might not be correct. */
1209     if(image->type != ImageTypeMetafile){
1210         INT temp;
1211         temp = pti[0].y;
1212         pti[0].y = pti[2].y;
1213         pti[2].y = temp;
1214     }
1215
1216     if(IPicture_Render(image->picture, graphics->hdc,
1217         pti[0].x, pti[0].y, pti[1].x - pti[0].x, pti[2].y - pti[0].y,
1218         srcx * dx, srcy * dy,
1219         srcwidth * dx, srcheight * dy,
1220         NULL) != S_OK){
1221         if(callback)
1222             callback(callbackData);
1223         return GenericError;
1224     }
1225
1226     return Ok;
1227 }
1228
1229 GpStatus WINGDIPAPI GdipDrawImagePointsRectI(GpGraphics *graphics, GpImage *image,
1230      GDIPCONST GpPoint *points, INT count, INT srcx, INT srcy, INT srcwidth,
1231      INT srcheight, GpUnit srcUnit, GDIPCONST GpImageAttributes* imageAttributes,
1232      DrawImageAbort callback, VOID * callbackData)
1233 {
1234     GpPointF pointsF[3];
1235     INT i;
1236
1237     if(!points || count!=3)
1238         return InvalidParameter;
1239
1240     for(i = 0; i < count; i++){
1241         pointsF[i].X = (REAL)points[i].X;
1242         pointsF[i].Y = (REAL)points[i].Y;
1243     }
1244
1245     return GdipDrawImagePointsRect(graphics, image, pointsF, count, (REAL)srcx, (REAL)srcy,
1246                                    (REAL)srcwidth, (REAL)srcheight, srcUnit, imageAttributes,
1247                                    callback, callbackData);
1248 }
1249
1250 GpStatus WINGDIPAPI GdipDrawImageRectRect(GpGraphics *graphics, GpImage *image,
1251     REAL dstx, REAL dsty, REAL dstwidth, REAL dstheight, REAL srcx, REAL srcy,
1252     REAL srcwidth, REAL srcheight, GpUnit srcUnit,
1253     GDIPCONST GpImageAttributes* imageattr, DrawImageAbort callback,
1254     VOID * callbackData)
1255 {
1256     GpPointF points[3];
1257
1258     points[0].X = dstx;
1259     points[0].Y = dsty;
1260     points[1].X = dstx + dstwidth;
1261     points[1].Y = dsty;
1262     points[2].X = dstx;
1263     points[2].Y = dsty + dstheight;
1264
1265     return GdipDrawImagePointsRect(graphics, image, points, 3, srcx, srcy,
1266                srcwidth, srcheight, srcUnit, imageattr, callback, callbackData);
1267 }
1268
1269 GpStatus WINGDIPAPI GdipDrawImageRectRectI(GpGraphics *graphics, GpImage *image,
1270         INT dstx, INT dsty, INT dstwidth, INT dstheight, INT srcx, INT srcy,
1271         INT srcwidth, INT srcheight, GpUnit srcUnit,
1272         GDIPCONST GpImageAttributes* imageAttributes, DrawImageAbort callback,
1273         VOID * callbackData)
1274 {
1275    GpPointF points[3];
1276
1277     points[0].X = dstx;
1278     points[0].Y = dsty;
1279     points[1].X = dstx + dstwidth;
1280     points[1].Y = dsty;
1281     points[2].X = dstx;
1282     points[2].Y = dsty + dstheight;
1283
1284     return GdipDrawImagePointsRect(graphics, image, points, 3, srcx, srcy,
1285                srcwidth, srcheight, srcUnit, imageAttributes, callback, callbackData);
1286 }
1287
1288 GpStatus WINGDIPAPI GdipDrawImageRect(GpGraphics *graphics, GpImage *image,
1289     REAL x, REAL y, REAL width, REAL height)
1290 {
1291     RectF bounds;
1292     GpUnit unit;
1293     GpStatus ret;
1294
1295     if(!graphics || !image)
1296         return InvalidParameter;
1297
1298     ret = GdipGetImageBounds(image, &bounds, &unit);
1299     if(ret != Ok)
1300         return ret;
1301
1302     return GdipDrawImageRectRect(graphics, image, x, y, width, height,
1303                                  bounds.X, bounds.Y, bounds.Width, bounds.Height,
1304                                  unit, NULL, NULL, NULL);
1305 }
1306
1307 GpStatus WINGDIPAPI GdipDrawImageRectI(GpGraphics *graphics, GpImage *image,
1308     INT x, INT y, INT width, INT height)
1309 {
1310     return GdipDrawImageRect(graphics, image, (REAL)x, (REAL)y, (REAL)width, (REAL)height);
1311 }
1312
1313 GpStatus WINGDIPAPI GdipDrawLine(GpGraphics *graphics, GpPen *pen, REAL x1,
1314     REAL y1, REAL x2, REAL y2)
1315 {
1316     INT save_state;
1317     GpPointF pt[2];
1318     GpStatus retval;
1319
1320     if(!pen || !graphics)
1321         return InvalidParameter;
1322
1323     pt[0].X = x1;
1324     pt[0].Y = y1;
1325     pt[1].X = x2;
1326     pt[1].Y = y2;
1327
1328     save_state = prepare_dc(graphics, pen);
1329
1330     retval = draw_polyline(graphics, pen, pt, 2, TRUE);
1331
1332     restore_dc(graphics, save_state);
1333
1334     return retval;
1335 }
1336
1337 GpStatus WINGDIPAPI GdipDrawLineI(GpGraphics *graphics, GpPen *pen, INT x1,
1338     INT y1, INT x2, INT y2)
1339 {
1340     INT save_state;
1341     GpPointF pt[2];
1342     GpStatus retval;
1343
1344     if(!pen || !graphics)
1345         return InvalidParameter;
1346
1347     pt[0].X = (REAL)x1;
1348     pt[0].Y = (REAL)y1;
1349     pt[1].X = (REAL)x2;
1350     pt[1].Y = (REAL)y2;
1351
1352     save_state = prepare_dc(graphics, pen);
1353
1354     retval = draw_polyline(graphics, pen, pt, 2, TRUE);
1355
1356     restore_dc(graphics, save_state);
1357
1358     return retval;
1359 }
1360
1361 GpStatus WINGDIPAPI GdipDrawLines(GpGraphics *graphics, GpPen *pen, GDIPCONST
1362     GpPointF *points, INT count)
1363 {
1364     INT save_state;
1365     GpStatus retval;
1366
1367     if(!pen || !graphics || (count < 2))
1368         return InvalidParameter;
1369
1370     save_state = prepare_dc(graphics, pen);
1371
1372     retval = draw_polyline(graphics, pen, points, count, TRUE);
1373
1374     restore_dc(graphics, save_state);
1375
1376     return retval;
1377 }
1378
1379 GpStatus WINGDIPAPI GdipDrawLinesI(GpGraphics *graphics, GpPen *pen, GDIPCONST
1380     GpPoint *points, INT count)
1381 {
1382     INT save_state;
1383     GpStatus retval;
1384     GpPointF *ptf = NULL;
1385     int i;
1386
1387     if(!pen || !graphics || (count < 2))
1388         return InvalidParameter;
1389
1390     ptf = GdipAlloc(count * sizeof(GpPointF));
1391     if(!ptf) return OutOfMemory;
1392
1393     for(i = 0; i < count; i ++){
1394         ptf[i].X = (REAL) points[i].X;
1395         ptf[i].Y = (REAL) points[i].Y;
1396     }
1397
1398     save_state = prepare_dc(graphics, pen);
1399
1400     retval = draw_polyline(graphics, pen, ptf, count, TRUE);
1401
1402     restore_dc(graphics, save_state);
1403
1404     GdipFree(ptf);
1405     return retval;
1406 }
1407
1408 GpStatus WINGDIPAPI GdipDrawPath(GpGraphics *graphics, GpPen *pen, GpPath *path)
1409 {
1410     INT save_state;
1411     GpStatus retval;
1412
1413     if(!pen || !graphics)
1414         return InvalidParameter;
1415
1416     save_state = prepare_dc(graphics, pen);
1417
1418     retval = draw_poly(graphics, pen, path->pathdata.Points,
1419                        path->pathdata.Types, path->pathdata.Count, TRUE);
1420
1421     restore_dc(graphics, save_state);
1422
1423     return retval;
1424 }
1425
1426 GpStatus WINGDIPAPI GdipDrawPie(GpGraphics *graphics, GpPen *pen, REAL x,
1427     REAL y, REAL width, REAL height, REAL startAngle, REAL sweepAngle)
1428 {
1429     INT save_state;
1430
1431     if(!graphics || !pen)
1432         return InvalidParameter;
1433
1434     save_state = prepare_dc(graphics, pen);
1435     SelectObject(graphics->hdc, GetStockObject(NULL_BRUSH));
1436
1437     draw_pie(graphics, x, y, width, height, startAngle, sweepAngle);
1438
1439     restore_dc(graphics, save_state);
1440
1441     return Ok;
1442 }
1443
1444 GpStatus WINGDIPAPI GdipDrawPieI(GpGraphics *graphics, GpPen *pen, INT x,
1445     INT y, INT width, INT height, REAL startAngle, REAL sweepAngle)
1446 {
1447     return GdipDrawPie(graphics,pen,(REAL)x,(REAL)y,(REAL)width,(REAL)height,startAngle,sweepAngle);
1448 }
1449
1450 GpStatus WINGDIPAPI GdipDrawRectangle(GpGraphics *graphics, GpPen *pen, REAL x,
1451     REAL y, REAL width, REAL height)
1452 {
1453     INT save_state;
1454     GpPointF ptf[4];
1455     POINT pti[4];
1456
1457     if(!pen || !graphics)
1458         return InvalidParameter;
1459
1460     ptf[0].X = x;
1461     ptf[0].Y = y;
1462     ptf[1].X = x + width;
1463     ptf[1].Y = y;
1464     ptf[2].X = x + width;
1465     ptf[2].Y = y + height;
1466     ptf[3].X = x;
1467     ptf[3].Y = y + height;
1468
1469     save_state = prepare_dc(graphics, pen);
1470     SelectObject(graphics->hdc, GetStockObject(NULL_BRUSH));
1471
1472     transform_and_round_points(graphics, pti, ptf, 4);
1473     Polygon(graphics->hdc, pti, 4);
1474
1475     restore_dc(graphics, save_state);
1476
1477     return Ok;
1478 }
1479
1480 GpStatus WINGDIPAPI GdipDrawRectangleI(GpGraphics *graphics, GpPen *pen, INT x,
1481     INT y, INT width, INT height)
1482 {
1483     return GdipDrawRectangle(graphics,pen,(REAL)x,(REAL)y,(REAL)width,(REAL)height);
1484 }
1485
1486 GpStatus WINGDIPAPI GdipDrawRectangles(GpGraphics *graphics, GpPen *pen,
1487     GDIPCONST GpRectF* rects, INT count)
1488 {
1489     GpPointF *ptf;
1490     POINT *pti;
1491     INT save_state, i;
1492
1493     if(!graphics || !pen || !rects || count < 1)
1494         return InvalidParameter;
1495
1496     ptf = GdipAlloc(4 * count * sizeof(GpPointF));
1497     pti = GdipAlloc(4 * count * sizeof(POINT));
1498
1499     if(!ptf || !pti){
1500         GdipFree(ptf);
1501         GdipFree(pti);
1502         return OutOfMemory;
1503     }
1504
1505     for(i = 0; i < count; i++){
1506         ptf[4 * i + 3].X = ptf[4 * i].X = rects[i].X;
1507         ptf[4 * i + 1].Y = ptf[4 * i].Y = rects[i].Y;
1508         ptf[4 * i + 2].X = ptf[4 * i + 1].X = rects[i].X + rects[i].Width;
1509         ptf[4 * i + 3].Y = ptf[4 * i + 2].Y = rects[i].Y + rects[i].Height;
1510     }
1511
1512     save_state = prepare_dc(graphics, pen);
1513     SelectObject(graphics->hdc, GetStockObject(NULL_BRUSH));
1514
1515     transform_and_round_points(graphics, pti, ptf, 4 * count);
1516
1517     for(i = 0; i < count; i++)
1518         Polygon(graphics->hdc, &pti[4 * i], 4);
1519
1520     restore_dc(graphics, save_state);
1521
1522     GdipFree(ptf);
1523     GdipFree(pti);
1524
1525     return Ok;
1526 }
1527
1528 GpStatus WINGDIPAPI GdipDrawRectanglesI(GpGraphics *graphics, GpPen *pen,
1529     GDIPCONST GpRect* rects, INT count)
1530 {
1531     GpRectF *rectsF;
1532     GpStatus ret;
1533     INT i;
1534
1535     if(!rects || count<=0)
1536         return InvalidParameter;
1537
1538     rectsF = GdipAlloc(sizeof(GpRectF) * count);
1539     if(!rectsF)
1540         return OutOfMemory;
1541
1542     for(i = 0;i < count;i++){
1543         rectsF[i].X      = (REAL)rects[i].X;
1544         rectsF[i].Y      = (REAL)rects[i].Y;
1545         rectsF[i].Width  = (REAL)rects[i].Width;
1546         rectsF[i].Height = (REAL)rects[i].Height;
1547     }
1548
1549     ret = GdipDrawRectangles(graphics, pen, rectsF, count);
1550     GdipFree(rectsF);
1551
1552     return ret;
1553 }
1554
1555 GpStatus WINGDIPAPI GdipDrawString(GpGraphics *graphics, GDIPCONST WCHAR *string,
1556     INT length, GDIPCONST GpFont *font, GDIPCONST RectF *rect,
1557     GDIPCONST GpStringFormat *format, GDIPCONST GpBrush *brush)
1558 {
1559     HRGN rgn = NULL;
1560     HFONT gdifont;
1561     LOGFONTW lfw;
1562     TEXTMETRICW textmet;
1563     GpPointF pt[2], rectcpy[4];
1564     POINT corners[4];
1565     WCHAR* stringdup;
1566     REAL angle, ang_cos, ang_sin, rel_width, rel_height;
1567     INT sum = 0, height = 0, fit, fitcpy, save_state, i, j, lret, nwidth,
1568         nheight;
1569     SIZE size;
1570     RECT drawcoord;
1571
1572     if(!graphics || !string || !font || !brush || !rect)
1573         return InvalidParameter;
1574
1575     if((brush->bt != BrushTypeSolidColor)){
1576         FIXME("not implemented for given parameters\n");
1577         return NotImplemented;
1578     }
1579
1580     if(format)
1581         TRACE("may be ignoring some format flags: attr %x\n", format->attr);
1582
1583     if(length == -1) length = lstrlenW(string);
1584
1585     stringdup = GdipAlloc(length * sizeof(WCHAR));
1586     if(!stringdup) return OutOfMemory;
1587
1588     save_state = SaveDC(graphics->hdc);
1589     SetBkMode(graphics->hdc, TRANSPARENT);
1590     SetTextColor(graphics->hdc, brush->lb.lbColor);
1591
1592     rectcpy[3].X = rectcpy[0].X = rect->X;
1593     rectcpy[1].Y = rectcpy[0].Y = rect->Y;
1594     rectcpy[2].X = rectcpy[1].X = rect->X + rect->Width;
1595     rectcpy[3].Y = rectcpy[2].Y = rect->Y + rect->Height;
1596     transform_and_round_points(graphics, corners, rectcpy, 4);
1597
1598     if(roundr(rect->Width) == 0 && roundr(rect->Height) == 0){
1599         rel_width = rel_height = 1.0;
1600         nwidth = nheight = INT_MAX;
1601     }
1602     else{
1603         rel_width = sqrt((corners[1].x - corners[0].x) * (corners[1].x - corners[0].x) +
1604                          (corners[1].y - corners[0].y) * (corners[1].y - corners[0].y))
1605                          / rect->Width;
1606         rel_height = sqrt((corners[2].x - corners[1].x) * (corners[2].x - corners[1].x) +
1607                           (corners[2].y - corners[1].y) * (corners[2].y - corners[1].y))
1608                           / rect->Height;
1609
1610         nwidth = roundr(rel_width * rect->Width);
1611         nheight = roundr(rel_height * rect->Height);
1612         rgn = CreatePolygonRgn(corners, 4, ALTERNATE);
1613         SelectClipRgn(graphics->hdc, rgn);
1614     }
1615
1616     /* Use gdi to find the font, then perform transformations on it (height,
1617      * width, angle). */
1618     SelectObject(graphics->hdc, CreateFontIndirectW(&font->lfw));
1619     GetTextMetricsW(graphics->hdc, &textmet);
1620     lfw = font->lfw;
1621
1622     lfw.lfHeight = roundr(((REAL)lfw.lfHeight) * rel_height);
1623     lfw.lfWidth = roundr(textmet.tmAveCharWidth * rel_width);
1624
1625     pt[0].X = 0.0;
1626     pt[0].Y = 0.0;
1627     pt[1].X = 1.0;
1628     pt[1].Y = 0.0;
1629     GdipTransformMatrixPoints(graphics->worldtrans, pt, 2);
1630     angle = gdiplus_atan2((pt[1].Y - pt[0].Y), (pt[1].X - pt[0].X));
1631     ang_cos = cos(angle);
1632     ang_sin = sin(angle);
1633     lfw.lfEscapement = lfw.lfOrientation = -roundr((angle / M_PI) * 1800.0);
1634
1635     gdifont = CreateFontIndirectW(&lfw);
1636     DeleteObject(SelectObject(graphics->hdc, CreateFontIndirectW(&lfw)));
1637
1638     for(i = 0, j = 0; i < length; i++){
1639         if(!isprintW(string[i]) && (string[i] != '\n'))
1640             continue;
1641
1642         stringdup[j] = string[i];
1643         j++;
1644     }
1645
1646     stringdup[j] = 0;
1647     length = j;
1648
1649     while(sum < length){
1650         drawcoord.left = corners[0].x + roundr(ang_sin * (REAL) height);
1651         drawcoord.top = corners[0].y + roundr(ang_cos * (REAL) height);
1652
1653         GetTextExtentExPointW(graphics->hdc, stringdup + sum, length - sum,
1654                               nwidth, &fit, NULL, &size);
1655         fitcpy = fit;
1656
1657         if(fit == 0){
1658             DrawTextW(graphics->hdc, stringdup + sum, 1, &drawcoord, DT_NOCLIP |
1659                       DT_EXPANDTABS);
1660             break;
1661         }
1662
1663         for(lret = 0; lret < fit; lret++)
1664             if(*(stringdup + sum + lret) == '\n')
1665                 break;
1666
1667         /* Line break code (may look strange, but it imitates windows). */
1668         if(lret < fit)
1669             fit = lret;    /* this is not an off-by-one error */
1670         else if(fit < (length - sum)){
1671             if(*(stringdup + sum + fit) == ' ')
1672                 while(*(stringdup + sum + fit) == ' ')
1673                     fit++;
1674             else
1675                 while(*(stringdup + sum + fit - 1) != ' '){
1676                     fit--;
1677
1678                     if(*(stringdup + sum + fit) == '\t')
1679                         break;
1680
1681                     if(fit == 0){
1682                         fit = fitcpy;
1683                         break;
1684                     }
1685                 }
1686         }
1687         DrawTextW(graphics->hdc, stringdup + sum, min(length - sum, fit),
1688                   &drawcoord, DT_NOCLIP | DT_EXPANDTABS);
1689
1690         sum += fit + (lret < fitcpy ? 1 : 0);
1691         height += size.cy;
1692
1693         if(height > nheight)
1694             break;
1695
1696         /* Stop if this was a linewrap (but not if it was a linebreak). */
1697         if((lret == fitcpy) && format && (format->attr & StringFormatFlagsNoWrap))
1698             break;
1699     }
1700
1701     GdipFree(stringdup);
1702     DeleteObject(rgn);
1703     DeleteObject(gdifont);
1704
1705     RestoreDC(graphics->hdc, save_state);
1706
1707     return Ok;
1708 }
1709
1710 GpStatus WINGDIPAPI GdipFillEllipse(GpGraphics *graphics, GpBrush *brush, REAL x,
1711     REAL y, REAL width, REAL height)
1712 {
1713     INT save_state;
1714     GpPointF ptf[2];
1715     POINT pti[2];
1716
1717     if(!graphics || !brush)
1718         return InvalidParameter;
1719
1720     ptf[0].X = x;
1721     ptf[0].Y = y;
1722     ptf[1].X = x + width;
1723     ptf[1].Y = y + height;
1724
1725     save_state = SaveDC(graphics->hdc);
1726     EndPath(graphics->hdc);
1727     SelectObject(graphics->hdc, brush->gdibrush);
1728     SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
1729
1730     transform_and_round_points(graphics, pti, ptf, 2);
1731
1732     Ellipse(graphics->hdc, pti[0].x, pti[0].y, pti[1].x, pti[1].y);
1733
1734     RestoreDC(graphics->hdc, save_state);
1735
1736     return Ok;
1737 }
1738
1739 GpStatus WINGDIPAPI GdipFillEllipseI(GpGraphics *graphics, GpBrush *brush, INT x,
1740     INT y, INT width, INT height)
1741 {
1742     return GdipFillEllipse(graphics,brush,(REAL)x,(REAL)y,(REAL)width,(REAL)height);
1743 }
1744
1745 GpStatus WINGDIPAPI GdipFillPath(GpGraphics *graphics, GpBrush *brush, GpPath *path)
1746 {
1747     INT save_state;
1748     GpStatus retval;
1749
1750     if(!brush || !graphics || !path)
1751         return InvalidParameter;
1752
1753     save_state = SaveDC(graphics->hdc);
1754     EndPath(graphics->hdc);
1755     SelectObject(graphics->hdc, brush->gdibrush);
1756     SetPolyFillMode(graphics->hdc, (path->fill == FillModeAlternate ? ALTERNATE
1757                                                                     : WINDING));
1758
1759     BeginPath(graphics->hdc);
1760     retval = draw_poly(graphics, NULL, path->pathdata.Points,
1761                        path->pathdata.Types, path->pathdata.Count, FALSE);
1762
1763     if(retval != Ok)
1764         goto end;
1765
1766     EndPath(graphics->hdc);
1767     FillPath(graphics->hdc);
1768
1769     retval = Ok;
1770
1771 end:
1772     RestoreDC(graphics->hdc, save_state);
1773
1774     return retval;
1775 }
1776
1777 GpStatus WINGDIPAPI GdipFillPie(GpGraphics *graphics, GpBrush *brush, REAL x,
1778     REAL y, REAL width, REAL height, REAL startAngle, REAL sweepAngle)
1779 {
1780     INT save_state;
1781
1782     if(!graphics || !brush)
1783         return InvalidParameter;
1784
1785     save_state = SaveDC(graphics->hdc);
1786     EndPath(graphics->hdc);
1787     SelectObject(graphics->hdc, brush->gdibrush);
1788     SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
1789
1790     draw_pie(graphics, x, y, width, height, startAngle, sweepAngle);
1791
1792     RestoreDC(graphics->hdc, save_state);
1793
1794     return Ok;
1795 }
1796
1797 GpStatus WINGDIPAPI GdipFillPieI(GpGraphics *graphics, GpBrush *brush, INT x,
1798     INT y, INT width, INT height, REAL startAngle, REAL sweepAngle)
1799 {
1800     return GdipFillPie(graphics,brush,(REAL)x,(REAL)y,(REAL)width,(REAL)height,startAngle,sweepAngle);
1801 }
1802
1803 GpStatus WINGDIPAPI GdipFillPolygon(GpGraphics *graphics, GpBrush *brush,
1804     GDIPCONST GpPointF *points, INT count, GpFillMode fillMode)
1805 {
1806     INT save_state;
1807     GpPointF *ptf = NULL;
1808     POINT *pti = NULL;
1809     GpStatus retval = Ok;
1810
1811     if(!graphics || !brush || !points || !count)
1812         return InvalidParameter;
1813
1814     ptf = GdipAlloc(count * sizeof(GpPointF));
1815     pti = GdipAlloc(count * sizeof(POINT));
1816     if(!ptf || !pti){
1817         retval = OutOfMemory;
1818         goto end;
1819     }
1820
1821     memcpy(ptf, points, count * sizeof(GpPointF));
1822
1823     save_state = SaveDC(graphics->hdc);
1824     EndPath(graphics->hdc);
1825     SelectObject(graphics->hdc, brush->gdibrush);
1826     SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
1827     SetPolyFillMode(graphics->hdc, (fillMode == FillModeAlternate ? ALTERNATE
1828                                                                   : WINDING));
1829
1830     transform_and_round_points(graphics, pti, ptf, count);
1831     Polygon(graphics->hdc, pti, count);
1832
1833     RestoreDC(graphics->hdc, save_state);
1834
1835 end:
1836     GdipFree(ptf);
1837     GdipFree(pti);
1838
1839     return retval;
1840 }
1841
1842 GpStatus WINGDIPAPI GdipFillPolygonI(GpGraphics *graphics, GpBrush *brush,
1843     GDIPCONST GpPoint *points, INT count, GpFillMode fillMode)
1844 {
1845     INT save_state, i;
1846     GpPointF *ptf = NULL;
1847     POINT *pti = NULL;
1848     GpStatus retval = Ok;
1849
1850     if(!graphics || !brush || !points || !count)
1851         return InvalidParameter;
1852
1853     ptf = GdipAlloc(count * sizeof(GpPointF));
1854     pti = GdipAlloc(count * sizeof(POINT));
1855     if(!ptf || !pti){
1856         retval = OutOfMemory;
1857         goto end;
1858     }
1859
1860     for(i = 0; i < count; i ++){
1861         ptf[i].X = (REAL) points[i].X;
1862         ptf[i].Y = (REAL) points[i].Y;
1863     }
1864
1865     save_state = SaveDC(graphics->hdc);
1866     EndPath(graphics->hdc);
1867     SelectObject(graphics->hdc, brush->gdibrush);
1868     SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
1869     SetPolyFillMode(graphics->hdc, (fillMode == FillModeAlternate ? ALTERNATE
1870                                                                   : WINDING));
1871
1872     transform_and_round_points(graphics, pti, ptf, count);
1873     Polygon(graphics->hdc, pti, count);
1874
1875     RestoreDC(graphics->hdc, save_state);
1876
1877 end:
1878     GdipFree(ptf);
1879     GdipFree(pti);
1880
1881     return retval;
1882 }
1883
1884 GpStatus WINGDIPAPI GdipFillRectangle(GpGraphics *graphics, GpBrush *brush,
1885     REAL x, REAL y, REAL width, REAL height)
1886 {
1887     INT save_state;
1888     GpPointF ptf[4];
1889     POINT pti[4];
1890
1891     if(!graphics || !brush)
1892         return InvalidParameter;
1893
1894     ptf[0].X = x;
1895     ptf[0].Y = y;
1896     ptf[1].X = x + width;
1897     ptf[1].Y = y;
1898     ptf[2].X = x + width;
1899     ptf[2].Y = y + height;
1900     ptf[3].X = x;
1901     ptf[3].Y = y + height;
1902
1903     save_state = SaveDC(graphics->hdc);
1904     EndPath(graphics->hdc);
1905     SelectObject(graphics->hdc, brush->gdibrush);
1906     SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
1907
1908     transform_and_round_points(graphics, pti, ptf, 4);
1909
1910     Polygon(graphics->hdc, pti, 4);
1911
1912     RestoreDC(graphics->hdc, save_state);
1913
1914     return Ok;
1915 }
1916
1917 GpStatus WINGDIPAPI GdipFillRectangleI(GpGraphics *graphics, GpBrush *brush,
1918     INT x, INT y, INT width, INT height)
1919 {
1920     INT save_state;
1921     GpPointF ptf[4];
1922     POINT pti[4];
1923
1924     if(!graphics || !brush)
1925         return InvalidParameter;
1926
1927     ptf[0].X = x;
1928     ptf[0].Y = y;
1929     ptf[1].X = x + width;
1930     ptf[1].Y = y;
1931     ptf[2].X = x + width;
1932     ptf[2].Y = y + height;
1933     ptf[3].X = x;
1934     ptf[3].Y = y + height;
1935
1936     save_state = SaveDC(graphics->hdc);
1937     EndPath(graphics->hdc);
1938     SelectObject(graphics->hdc, brush->gdibrush);
1939     SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
1940
1941     transform_and_round_points(graphics, pti, ptf, 4);
1942
1943     Polygon(graphics->hdc, pti, 4);
1944
1945     RestoreDC(graphics->hdc, save_state);
1946
1947     return Ok;
1948 }
1949
1950 GpStatus WINGDIPAPI GdipFillRectangles(GpGraphics *graphics, GpBrush *brush, GDIPCONST GpRectF *rects,
1951     INT count)
1952 {
1953     GpStatus ret;
1954     INT i;
1955
1956     if(!rects)
1957         return InvalidParameter;
1958
1959     for(i = 0; i < count; i++){
1960         ret = GdipFillRectangle(graphics, brush, rects[i].X, rects[i].Y, rects[i].Width, rects[i].Height);
1961         if(ret != Ok)   return ret;
1962     }
1963
1964     return Ok;
1965 }
1966
1967 GpStatus WINGDIPAPI GdipFillRectanglesI(GpGraphics *graphics, GpBrush *brush, GDIPCONST GpRect *rects,
1968     INT count)
1969 {
1970     GpRectF *rectsF;
1971     GpStatus ret;
1972     INT i;
1973
1974     if(!rects || count <= 0)
1975         return InvalidParameter;
1976
1977     rectsF = GdipAlloc(sizeof(GpRectF)*count);
1978     if(!rectsF)
1979         return OutOfMemory;
1980
1981     for(i = 0; i < count; i++){
1982         rectsF[i].X      = (REAL)rects[i].X;
1983         rectsF[i].Y      = (REAL)rects[i].Y;
1984         rectsF[i].X      = (REAL)rects[i].Width;
1985         rectsF[i].Height = (REAL)rects[i].Height;
1986     }
1987
1988     ret = GdipFillRectangles(graphics,brush,rectsF,count);
1989     GdipFree(rectsF);
1990
1991     return ret;
1992 }
1993
1994 GpStatus WINGDIPAPI GdipFlush(GpGraphics *graphics, GpFlushIntention intention)
1995 {
1996     static int calls;
1997
1998     if(!graphics)
1999         return InvalidParameter;
2000
2001     if(!(calls++))
2002         FIXME("not implemented\n");
2003
2004     return NotImplemented;
2005 }
2006
2007 /* FIXME: Compositing mode is not used anywhere except the getter/setter. */
2008 GpStatus WINGDIPAPI GdipGetCompositingMode(GpGraphics *graphics,
2009     CompositingMode *mode)
2010 {
2011     if(!graphics || !mode)
2012         return InvalidParameter;
2013
2014     *mode = graphics->compmode;
2015
2016     return Ok;
2017 }
2018
2019 /* FIXME: Compositing quality is not used anywhere except the getter/setter. */
2020 GpStatus WINGDIPAPI GdipGetCompositingQuality(GpGraphics *graphics,
2021     CompositingQuality *quality)
2022 {
2023     if(!graphics || !quality)
2024         return InvalidParameter;
2025
2026     *quality = graphics->compqual;
2027
2028     return Ok;
2029 }
2030
2031 /* FIXME: Interpolation mode is not used anywhere except the getter/setter. */
2032 GpStatus WINGDIPAPI GdipGetInterpolationMode(GpGraphics *graphics,
2033     InterpolationMode *mode)
2034 {
2035     if(!graphics || !mode)
2036         return InvalidParameter;
2037
2038     *mode = graphics->interpolation;
2039
2040     return Ok;
2041 }
2042
2043 GpStatus WINGDIPAPI GdipGetPageScale(GpGraphics *graphics, REAL *scale)
2044 {
2045     if(!graphics || !scale)
2046         return InvalidParameter;
2047
2048     *scale = graphics->scale;
2049
2050     return Ok;
2051 }
2052
2053 GpStatus WINGDIPAPI GdipGetPageUnit(GpGraphics *graphics, GpUnit *unit)
2054 {
2055     if(!graphics || !unit)
2056         return InvalidParameter;
2057
2058     *unit = graphics->unit;
2059
2060     return Ok;
2061 }
2062
2063 /* FIXME: Pixel offset mode is not used anywhere except the getter/setter. */
2064 GpStatus WINGDIPAPI GdipGetPixelOffsetMode(GpGraphics *graphics, PixelOffsetMode
2065     *mode)
2066 {
2067     if(!graphics || !mode)
2068         return InvalidParameter;
2069
2070     *mode = graphics->pixeloffset;
2071
2072     return Ok;
2073 }
2074
2075 /* FIXME: Smoothing mode is not used anywhere except the getter/setter. */
2076 GpStatus WINGDIPAPI GdipGetSmoothingMode(GpGraphics *graphics, SmoothingMode *mode)
2077 {
2078     if(!graphics || !mode)
2079         return InvalidParameter;
2080
2081     *mode = graphics->smoothing;
2082
2083     return Ok;
2084 }
2085
2086 /* FIXME: Text rendering hint is not used anywhere except the getter/setter. */
2087 GpStatus WINGDIPAPI GdipGetTextRenderingHint(GpGraphics *graphics,
2088     TextRenderingHint *hint)
2089 {
2090     if(!graphics || !hint)
2091         return InvalidParameter;
2092
2093     *hint = graphics->texthint;
2094
2095     return Ok;
2096 }
2097
2098 GpStatus WINGDIPAPI GdipGetWorldTransform(GpGraphics *graphics, GpMatrix *matrix)
2099 {
2100     if(!graphics || !matrix)
2101         return InvalidParameter;
2102
2103     *matrix = *graphics->worldtrans;
2104     return Ok;
2105 }
2106
2107 /* Find the smallest rectangle that bounds the text when it is printed in rect
2108  * according to the format options listed in format. If rect has 0 width and
2109  * height, then just find the smallest rectangle that bounds the text when it's
2110  * printed at location (rect->X, rect-Y). */
2111 GpStatus WINGDIPAPI GdipMeasureString(GpGraphics *graphics,
2112     GDIPCONST WCHAR *string, INT length, GDIPCONST GpFont *font,
2113     GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format, RectF *bounds,
2114     INT *codepointsfitted, INT *linesfilled)
2115 {
2116     HFONT oldfont;
2117     WCHAR* stringdup;
2118     INT sum = 0, height = 0, fit, fitcpy, max_width = 0, i, j, lret, nwidth,
2119         nheight;
2120     SIZE size;
2121
2122     if(!graphics || !string || !font || !rect)
2123         return InvalidParameter;
2124
2125     if(codepointsfitted || linesfilled){
2126         FIXME("not implemented for given parameters\n");
2127         return NotImplemented;
2128     }
2129
2130     if(format)
2131         TRACE("may be ignoring some format flags: attr %x\n", format->attr);
2132
2133     if(length == -1) length = lstrlenW(string);
2134
2135     stringdup = GdipAlloc(length * sizeof(WCHAR));
2136     if(!stringdup) return OutOfMemory;
2137
2138     oldfont = SelectObject(graphics->hdc, CreateFontIndirectW(&font->lfw));
2139     nwidth = roundr(rect->Width);
2140     nheight = roundr(rect->Height);
2141
2142     if((nwidth == 0) && (nheight == 0))
2143         nwidth = nheight = INT_MAX;
2144
2145     for(i = 0, j = 0; i < length; i++){
2146         if(!isprintW(string[i]) && (string[i] != '\n'))
2147             continue;
2148
2149         stringdup[j] = string[i];
2150         j++;
2151     }
2152
2153     stringdup[j] = 0;
2154     length = j;
2155
2156     while(sum < length){
2157         GetTextExtentExPointW(graphics->hdc, stringdup + sum, length - sum,
2158                               nwidth, &fit, NULL, &size);
2159         fitcpy = fit;
2160
2161         if(fit == 0)
2162             break;
2163
2164         for(lret = 0; lret < fit; lret++)
2165             if(*(stringdup + sum + lret) == '\n')
2166                 break;
2167
2168         /* Line break code (may look strange, but it imitates windows). */
2169         if(lret < fit)
2170             fit = lret;    /* this is not an off-by-one error */
2171         else if(fit < (length - sum)){
2172             if(*(stringdup + sum + fit) == ' ')
2173                 while(*(stringdup + sum + fit) == ' ')
2174                     fit++;
2175             else
2176                 while(*(stringdup + sum + fit - 1) != ' '){
2177                     fit--;
2178
2179                     if(*(stringdup + sum + fit) == '\t')
2180                         break;
2181
2182                     if(fit == 0){
2183                         fit = fitcpy;
2184                         break;
2185                     }
2186                 }
2187         }
2188
2189         GetTextExtentExPointW(graphics->hdc, stringdup + sum, fit,
2190                               nwidth, &j, NULL, &size);
2191
2192         sum += fit + (lret < fitcpy ? 1 : 0);
2193         height += size.cy;
2194         max_width = max(max_width, size.cx);
2195
2196         if(height > nheight)
2197             break;
2198
2199         /* Stop if this was a linewrap (but not if it was a linebreak). */
2200         if((lret == fitcpy) && format && (format->attr & StringFormatFlagsNoWrap))
2201             break;
2202     }
2203
2204     bounds->X = rect->X;
2205     bounds->Y = rect->Y;
2206     bounds->Width = (REAL)max_width;
2207     bounds->Height = (REAL) min(height, nheight);
2208
2209     GdipFree(stringdup);
2210     DeleteObject(SelectObject(graphics->hdc, oldfont));
2211
2212     return Ok;
2213 }
2214
2215 GpStatus WINGDIPAPI GdipRestoreGraphics(GpGraphics *graphics, GraphicsState state)
2216 {
2217     static int calls;
2218
2219     if(!graphics)
2220         return InvalidParameter;
2221
2222     if(!(calls++))
2223         FIXME("graphics state not implemented\n");
2224
2225     return NotImplemented;
2226 }
2227
2228 GpStatus WINGDIPAPI GdipRotateWorldTransform(GpGraphics *graphics, REAL angle,
2229     GpMatrixOrder order)
2230 {
2231     if(!graphics)
2232         return InvalidParameter;
2233
2234     return GdipRotateMatrix(graphics->worldtrans, angle, order);
2235 }
2236
2237 GpStatus WINGDIPAPI GdipSaveGraphics(GpGraphics *graphics, GraphicsState *state)
2238 {
2239     static int calls;
2240
2241     if(!graphics || !state)
2242         return InvalidParameter;
2243
2244     if(!(calls++))
2245         FIXME("graphics state not implemented\n");
2246
2247     return NotImplemented;
2248 }
2249
2250 GpStatus WINGDIPAPI GdipScaleWorldTransform(GpGraphics *graphics, REAL sx,
2251     REAL sy, GpMatrixOrder order)
2252 {
2253     if(!graphics)
2254         return InvalidParameter;
2255
2256     return GdipScaleMatrix(graphics->worldtrans, sx, sy, order);
2257 }
2258
2259 GpStatus WINGDIPAPI GdipSetCompositingMode(GpGraphics *graphics,
2260     CompositingMode mode)
2261 {
2262     if(!graphics)
2263         return InvalidParameter;
2264
2265     graphics->compmode = mode;
2266
2267     return Ok;
2268 }
2269
2270 GpStatus WINGDIPAPI GdipSetCompositingQuality(GpGraphics *graphics,
2271     CompositingQuality quality)
2272 {
2273     if(!graphics)
2274         return InvalidParameter;
2275
2276     graphics->compqual = quality;
2277
2278     return Ok;
2279 }
2280
2281 GpStatus WINGDIPAPI GdipSetInterpolationMode(GpGraphics *graphics,
2282     InterpolationMode mode)
2283 {
2284     if(!graphics)
2285         return InvalidParameter;
2286
2287     graphics->interpolation = mode;
2288
2289     return Ok;
2290 }
2291
2292 GpStatus WINGDIPAPI GdipSetPageScale(GpGraphics *graphics, REAL scale)
2293 {
2294     if(!graphics || (scale <= 0.0))
2295         return InvalidParameter;
2296
2297     graphics->scale = scale;
2298
2299     return Ok;
2300 }
2301
2302 GpStatus WINGDIPAPI GdipSetPageUnit(GpGraphics *graphics, GpUnit unit)
2303 {
2304     if(!graphics || (unit == UnitWorld))
2305         return InvalidParameter;
2306
2307     graphics->unit = unit;
2308
2309     return Ok;
2310 }
2311
2312 GpStatus WINGDIPAPI GdipSetPixelOffsetMode(GpGraphics *graphics, PixelOffsetMode
2313     mode)
2314 {
2315     if(!graphics)
2316         return InvalidParameter;
2317
2318     graphics->pixeloffset = mode;
2319
2320     return Ok;
2321 }
2322
2323 GpStatus WINGDIPAPI GdipSetSmoothingMode(GpGraphics *graphics, SmoothingMode mode)
2324 {
2325     if(!graphics)
2326         return InvalidParameter;
2327
2328     graphics->smoothing = mode;
2329
2330     return Ok;
2331 }
2332
2333 GpStatus WINGDIPAPI GdipSetTextRenderingHint(GpGraphics *graphics,
2334     TextRenderingHint hint)
2335 {
2336     if(!graphics)
2337         return InvalidParameter;
2338
2339     graphics->texthint = hint;
2340
2341     return Ok;
2342 }
2343
2344 GpStatus WINGDIPAPI GdipSetWorldTransform(GpGraphics *graphics, GpMatrix *matrix)
2345 {
2346     if(!graphics || !matrix)
2347         return InvalidParameter;
2348
2349     GdipDeleteMatrix(graphics->worldtrans);
2350     return GdipCloneMatrix(matrix, &graphics->worldtrans);
2351 }
2352
2353 GpStatus WINGDIPAPI GdipTranslateWorldTransform(GpGraphics *graphics, REAL dx,
2354     REAL dy, GpMatrixOrder order)
2355 {
2356     if(!graphics)
2357         return InvalidParameter;
2358
2359     return GdipTranslateMatrix(graphics->worldtrans, dx, dy, order);
2360 }
2361
2362 GpStatus WINGDIPAPI GdipSetClipRectI(GpGraphics *graphics, INT x, INT y,
2363                                      INT width, INT height,
2364                                      CombineMode combineMode)
2365 {
2366     static int calls;
2367
2368     if(!(calls++))
2369         FIXME("not implemented\n");
2370
2371     return NotImplemented;
2372 }
2373
2374 GpStatus WINGDIPAPI GdipSetClipRegion(GpGraphics *graphics, GpRegion *region,
2375                                      CombineMode combineMode)
2376 {
2377     static int calls;
2378
2379     if(!(calls++))
2380         FIXME("not implemented\n");
2381
2382     return NotImplemented;
2383 }
2384
2385 GpStatus WINGDIPAPI GdipSetMetafileDownLevelRasterizationLimit(GpGraphics *graphics,
2386     UINT limitDpi)
2387 {
2388     static int calls;
2389
2390     if(!(calls++))
2391         FIXME("not implemented\n");
2392
2393     return NotImplemented;
2394 }
2395
2396 GpStatus WINGDIPAPI GdipDrawPolygon(GpGraphics *graphics,GpPen *pen,GDIPCONST GpPointF *points,
2397     INT count)
2398 {
2399     INT save_state;
2400     POINT *pti;
2401
2402     if(!graphics || !pen || count<=0)
2403         return InvalidParameter;
2404
2405     pti = GdipAlloc(sizeof(POINT) * count);
2406
2407     save_state = prepare_dc(graphics, pen);
2408     SelectObject(graphics->hdc, GetStockObject(NULL_BRUSH));
2409
2410     transform_and_round_points(graphics, pti, (GpPointF*)points, count);
2411     Polygon(graphics->hdc, pti, count);
2412
2413     restore_dc(graphics, save_state);
2414     GdipFree(pti);
2415
2416     return Ok;
2417 }
2418
2419 GpStatus WINGDIPAPI GdipDrawPolygonI(GpGraphics *graphics,GpPen *pen,GDIPCONST GpPoint *points,
2420     INT count)
2421 {
2422     GpStatus ret;
2423     GpPointF *ptf;
2424     INT i;
2425
2426     if(count<=0)    return InvalidParameter;
2427     ptf = GdipAlloc(sizeof(GpPointF) * count);
2428
2429     for(i = 0;i < count; i++){
2430         ptf[i].X = (REAL)points[i].X;
2431         ptf[i].Y = (REAL)points[i].Y;
2432     }
2433
2434     ret = GdipDrawPolygon(graphics,pen,ptf,count);
2435     GdipFree(ptf);
2436
2437     return ret;
2438 }
2439
2440 GpStatus WINGDIPAPI GdipGetDpiX(GpGraphics *graphics, REAL* dpi)
2441 {
2442     if(!graphics || !dpi)
2443         return InvalidParameter;
2444
2445     *dpi = (REAL)GetDeviceCaps(graphics->hdc, LOGPIXELSX);
2446
2447     return Ok;
2448 }
2449
2450 GpStatus WINGDIPAPI GdipGetDpiY(GpGraphics *graphics, REAL* dpi)
2451 {
2452     if(!graphics || !dpi)
2453         return InvalidParameter;
2454
2455     *dpi = (REAL)GetDeviceCaps(graphics->hdc, LOGPIXELSY);
2456
2457     return Ok;
2458 }
2459
2460 GpStatus WINGDIPAPI GdipMultiplyWorldTransform(GpGraphics *graphics, GDIPCONST GpMatrix *matrix,
2461     GpMatrixOrder order)
2462 {
2463     GpMatrix m;
2464     GpStatus ret;
2465
2466     if(!graphics || !matrix)
2467         return InvalidParameter;
2468
2469     m = *(graphics->worldtrans);
2470
2471     ret = GdipMultiplyMatrix(&m, (GpMatrix*)matrix, order);
2472     if(ret == Ok)
2473         *(graphics->worldtrans) = m;
2474
2475     return ret;
2476 }
2477
2478 GpStatus WINGDIPAPI GdipGetDC(GpGraphics *graphics, HDC *hdc)
2479 {
2480     FIXME("(%p, %p): stub\n", graphics, hdc);
2481
2482     *hdc = NULL;
2483     return NotImplemented;
2484 }
2485
2486 GpStatus WINGDIPAPI GdipReleaseDC(GpGraphics *graphics, HDC hdc)
2487 {
2488     FIXME("(%p, %p): stub\n", graphics, hdc);
2489
2490     return NotImplemented;
2491 }
2492
2493 GpStatus WINGDIPAPI GdipGetClip(GpGraphics *graphics, GpRegion *region)
2494 {
2495    FIXME("(%p, %p): stub\n", graphics, region);
2496
2497    return NotImplemented;
2498 }