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user32: Fix a message test that would only pass on wine.
[wine.git] / dlls / gdiplus / graphics.c
blobaed61c58716ae41d59046871bfbf687c09e5f5db
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)
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 GdipDrawBezier(GpGraphics *graphics, GpPen *pen, REAL x1,
933 REAL y1, REAL x2, REAL y2, REAL x3, REAL y3, REAL x4, REAL y4)
934 {
935 INT save_state;
936 GpPointF pt[4];
937 GpStatus retval;
938
939 if(!graphics || !pen)
940 return InvalidParameter;
941
942 pt[0].X = x1;
943 pt[0].Y = y1;
944 pt[1].X = x2;
945 pt[1].Y = y2;
946 pt[2].X = x3;
947 pt[2].Y = y3;
948 pt[3].X = x4;
949 pt[3].Y = y4;
950
951 save_state = prepare_dc(graphics, pen);
952
953 retval = draw_polybezier(graphics, pen, pt, 4, TRUE);
954
955 restore_dc(graphics, save_state);
956
957 return retval;
958 }
959
960 /* Approximates cardinal spline with Bezier curves. */
961 GpStatus WINGDIPAPI GdipDrawCurve2(GpGraphics *graphics, GpPen *pen,
962 GDIPCONST GpPointF *points, INT count, REAL tension)
963 {
964 /* PolyBezier expects count*3-2 points. */
965 INT i, len_pt = count*3-2, save_state;
966 GpPointF *pt;
967 REAL x1, x2, y1, y2;
968 GpStatus retval;
969
970 if(!graphics || !pen)
971 return InvalidParameter;
972
973 pt = GdipAlloc(len_pt * sizeof(GpPointF));
974 tension = tension * TENSION_CONST;
975
976 calc_curve_bezier_endp(points[0].X, points[0].Y, points[1].X, points[1].Y,
977 tension, &x1, &y1);
978
979 pt[0].X = points[0].X;
980 pt[0].Y = points[0].Y;
981 pt[1].X = x1;
982 pt[1].Y = y1;
983
984 for(i = 0; i < count-2; i++){
985 calc_curve_bezier(&(points[i]), tension, &x1, &y1, &x2, &y2);
986
987 pt[3*i+2].X = x1;
988 pt[3*i+2].Y = y1;
989 pt[3*i+3].X = points[i+1].X;
990 pt[3*i+3].Y = points[i+1].Y;
991 pt[3*i+4].X = x2;
992 pt[3*i+4].Y = y2;
993 }
994
995 calc_curve_bezier_endp(points[count-1].X, points[count-1].Y,
996 points[count-2].X, points[count-2].Y, tension, &x1, &y1);
997
998 pt[len_pt-2].X = x1;
999 pt[len_pt-2].Y = y1;
1000 pt[len_pt-1].X = points[count-1].X;
1001 pt[len_pt-1].Y = points[count-1].Y;
1002
1003 save_state = prepare_dc(graphics, pen);
1004
1005 retval = draw_polybezier(graphics, pen, pt, len_pt, TRUE);
1006
1007 GdipFree(pt);
1008 restore_dc(graphics, save_state);
1009
1010 return retval;
1011 }
1012
1013 GpStatus WINGDIPAPI GdipDrawImageI(GpGraphics *graphics, GpImage *image, INT x,
1014 INT y)
1015 {
1016 UINT width, height, srcw, srch;
1017
1018 if(!graphics || !image)
1019 return InvalidParameter;
1020
1021 GdipGetImageWidth(image, &width);
1022 GdipGetImageHeight(image, &height);
1023
1024 srcw = width * (((REAL) INCH_HIMETRIC) /
1025 ((REAL) GetDeviceCaps(graphics->hdc, LOGPIXELSX)));
1026 srch = height * (((REAL) INCH_HIMETRIC) /
1027 ((REAL) GetDeviceCaps(graphics->hdc, LOGPIXELSY)));
1028
1029 if(image->type != ImageTypeMetafile){
1030 y += height;
1031 height *= -1;
1032 }
1033
1034 IPicture_Render(image->picture, graphics->hdc, x, y, width, height,
1035 0, 0, srcw, srch, NULL);
1036
1037 return Ok;
1038 }
1039
1040 /* FIXME: partially implemented (only works for rectangular parallelograms) */
1041 GpStatus WINGDIPAPI GdipDrawImagePointsRect(GpGraphics *graphics, GpImage *image,
1042 GDIPCONST GpPointF *points, INT count, REAL srcx, REAL srcy, REAL srcwidth,
1043 REAL srcheight, GpUnit srcUnit, GDIPCONST GpImageAttributes* imageAttributes,
1044 DrawImageAbort callback, VOID * callbackData)
1045 {
1046 GpPointF ptf[3];
1047 POINT pti[3];
1048 REAL dx, dy;
1049
1050 TRACE("%p %p %p %d %f %f %f %f %d %p %p %p\n", graphics, image, points, count,
1051 srcx, srcy, srcwidth, srcheight, srcUnit, imageAttributes, callback,
1052 callbackData);
1053
1054 if(!graphics || !image || !points || !imageAttributes || count != 3)
1055 return InvalidParameter;
1056
1057 if(srcUnit == UnitInch)
1058 dx = dy = (REAL) INCH_HIMETRIC;
1059 else if(srcUnit == UnitPixel){
1060 dx = ((REAL) INCH_HIMETRIC) /
1061 ((REAL) GetDeviceCaps(graphics->hdc, LOGPIXELSX));
1062 dy = ((REAL) INCH_HIMETRIC) /
1063 ((REAL) GetDeviceCaps(graphics->hdc, LOGPIXELSY));
1064 }
1065 else
1066 return NotImplemented;
1067
1068 memcpy(ptf, points, 3 * sizeof(GpPointF));
1069 transform_and_round_points(graphics, pti, ptf, 3);
1070
1071 /* IPicture renders bitmaps with the y-axis reversed
1072 * FIXME: flipping for unknown image type might not be correct. */
1073 if(image->type != ImageTypeMetafile){
1074 INT temp;
1075 temp = pti[0].y;
1076 pti[0].y = pti[2].y;
1077 pti[2].y = temp;
1078 }
1079
1080 if(IPicture_Render(image->picture, graphics->hdc,
1081 pti[0].x, pti[0].y, pti[1].x - pti[0].x, pti[2].y - pti[0].y,
1082 srcx * dx, srcy * dy,
1083 srcwidth * dx, srcheight * dy,
1084 NULL) != S_OK){
1085 if(callback)
1086 callback(callbackData);
1087 return GenericError;
1088 }
1089
1090 return Ok;
1091 }
1092
1093 GpStatus WINGDIPAPI GdipDrawImageRectRect(GpGraphics *graphics, GpImage *image,
1094 REAL dstx, REAL dsty, REAL dstwidth, REAL dstheight, REAL srcx, REAL srcy,
1095 REAL srcwidth, REAL srcheight, GpUnit srcUnit,
1096 GDIPCONST GpImageAttributes* imageattr, DrawImageAbort callback,
1097 VOID * callbackData)
1098 {
1099 GpPointF points[3];
1100
1101 points[0].X = dstx;
1102 points[0].Y = dsty;
1103 points[1].X = dstx + dstwidth;
1104 points[1].Y = dsty;
1105 points[2].X = dstx;
1106 points[2].Y = dsty + dstheight;
1107
1108 return GdipDrawImagePointsRect(graphics, image, points, 3, srcx, srcy,
1109 srcwidth, srcheight, srcUnit, imageattr, callback, callbackData);
1110 }
1111
1112 GpStatus WINGDIPAPI GdipDrawLine(GpGraphics *graphics, GpPen *pen, REAL x1,
1113 REAL y1, REAL x2, REAL y2)
1114 {
1115 INT save_state;
1116 GpPointF pt[2];
1117 GpStatus retval;
1118
1119 if(!pen || !graphics)
1120 return InvalidParameter;
1121
1122 pt[0].X = x1;
1123 pt[0].Y = y1;
1124 pt[1].X = x2;
1125 pt[1].Y = y2;
1126
1127 save_state = prepare_dc(graphics, pen);
1128
1129 retval = draw_polyline(graphics, pen, pt, 2, TRUE);
1130
1131 restore_dc(graphics, save_state);
1132
1133 return retval;
1134 }
1135
1136 GpStatus WINGDIPAPI GdipDrawLineI(GpGraphics *graphics, GpPen *pen, INT x1,
1137 INT y1, INT x2, INT y2)
1138 {
1139 INT save_state;
1140 GpPointF pt[2];
1141 GpStatus retval;
1142
1143 if(!pen || !graphics)
1144 return InvalidParameter;
1145
1146 pt[0].X = (REAL)x1;
1147 pt[0].Y = (REAL)y1;
1148 pt[1].X = (REAL)x2;
1149 pt[1].Y = (REAL)y2;
1150
1151 save_state = prepare_dc(graphics, pen);
1152
1153 retval = draw_polyline(graphics, pen, pt, 2, TRUE);
1154
1155 restore_dc(graphics, save_state);
1156
1157 return retval;
1158 }
1159
1160 GpStatus WINGDIPAPI GdipDrawLines(GpGraphics *graphics, GpPen *pen, GDIPCONST
1161 GpPointF *points, INT count)
1162 {
1163 INT save_state;
1164 GpStatus retval;
1165
1166 if(!pen || !graphics || (count < 2))
1167 return InvalidParameter;
1168
1169 save_state = prepare_dc(graphics, pen);
1170
1171 retval = draw_polyline(graphics, pen, points, count, TRUE);
1172
1173 restore_dc(graphics, save_state);
1174
1175 return retval;
1176 }
1177
1178 GpStatus WINGDIPAPI GdipDrawPath(GpGraphics *graphics, GpPen *pen, GpPath *path)
1179 {
1180 INT save_state;
1181 GpStatus retval;
1182
1183 if(!pen || !graphics)
1184 return InvalidParameter;
1185
1186 save_state = prepare_dc(graphics, pen);
1187
1188 retval = draw_poly(graphics, pen, path->pathdata.Points,
1189 path->pathdata.Types, path->pathdata.Count, TRUE);
1190
1191 restore_dc(graphics, save_state);
1192
1193 return retval;
1194 }
1195
1196 GpStatus WINGDIPAPI GdipDrawPie(GpGraphics *graphics, GpPen *pen, REAL x,
1197 REAL y, REAL width, REAL height, REAL startAngle, REAL sweepAngle)
1198 {
1199 INT save_state;
1200
1201 if(!graphics || !pen)
1202 return InvalidParameter;
1203
1204 save_state = prepare_dc(graphics, pen);
1205 SelectObject(graphics->hdc, GetStockObject(NULL_BRUSH));
1206
1207 draw_pie(graphics, x, y, width, height, startAngle, sweepAngle);
1208
1209 restore_dc(graphics, save_state);
1210
1211 return Ok;
1212 }
1213
1214 GpStatus WINGDIPAPI GdipDrawRectangleI(GpGraphics *graphics, GpPen *pen, INT x,
1215 INT y, INT width, INT height)
1216 {
1217 INT save_state;
1218 GpPointF ptf[4];
1219 POINT pti[4];
1220
1221 if(!pen || !graphics)
1222 return InvalidParameter;
1223
1224 ptf[0].X = x;
1225 ptf[0].Y = y;
1226 ptf[1].X = x + width;
1227 ptf[1].Y = y;
1228 ptf[2].X = x + width;
1229 ptf[2].Y = y + height;
1230 ptf[3].X = x;
1231 ptf[3].Y = y + height;
1232
1233 save_state = prepare_dc(graphics, pen);
1234 SelectObject(graphics->hdc, GetStockObject(NULL_BRUSH));
1235
1236 transform_and_round_points(graphics, pti, ptf, 4);
1237 Polygon(graphics->hdc, pti, 4);
1238
1239 restore_dc(graphics, save_state);
1240
1241 return Ok;
1242 }
1243
1244 GpStatus WINGDIPAPI GdipDrawRectangles(GpGraphics *graphics, GpPen *pen,
1245 GDIPCONST GpRectF* rects, INT count)
1246 {
1247 GpPointF *ptf;
1248 POINT *pti;
1249 INT save_state, i;
1250
1251 if(!graphics || !pen || !rects || count < 1)
1252 return InvalidParameter;
1253
1254 ptf = GdipAlloc(4 * count * sizeof(GpPointF));
1255 pti = GdipAlloc(4 * count * sizeof(POINT));
1256
1257 if(!ptf || !pti){
1258 GdipFree(ptf);
1259 GdipFree(pti);
1260 return OutOfMemory;
1261 }
1262
1263 for(i = 0; i < count; i++){
1264 ptf[4 * i + 3].X = ptf[4 * i].X = rects[i].X;
1265 ptf[4 * i + 1].Y = ptf[4 * i].Y = rects[i].Y;
1266 ptf[4 * i + 2].X = ptf[4 * i + 1].X = rects[i].X + rects[i].Width;
1267 ptf[4 * i + 3].Y = ptf[4 * i + 2].Y = rects[i].Y + rects[i].Height;
1268 }
1269
1270 save_state = prepare_dc(graphics, pen);
1271 SelectObject(graphics->hdc, GetStockObject(NULL_BRUSH));
1272
1273 transform_and_round_points(graphics, pti, ptf, 4 * count);
1274
1275 for(i = 0; i < count; i++)
1276 Polygon(graphics->hdc, &pti[4 * i], 4);
1277
1278 restore_dc(graphics, save_state);
1279
1280 GdipFree(ptf);
1281 GdipFree(pti);
1282
1283 return Ok;
1284 }
1285
1286 GpStatus WINGDIPAPI GdipDrawString(GpGraphics *graphics, GDIPCONST WCHAR *string,
1287 INT length, GDIPCONST GpFont *font, GDIPCONST RectF *rect,
1288 GDIPCONST GpStringFormat *format, GDIPCONST GpBrush *brush)
1289 {
1290 HRGN rgn = NULL;
1291 HFONT gdifont;
1292 LOGFONTW lfw;
1293 TEXTMETRICW textmet;
1294 GpPointF pt[2], rectcpy[4];
1295 POINT corners[4];
1296 WCHAR* stringdup;
1297 REAL angle, ang_cos, ang_sin, rel_width, rel_height;
1298 INT sum = 0, height = 0, fit, fitcpy, save_state, i, j, lret, nwidth,
1299 nheight;
1300 SIZE size;
1301 RECT drawcoord;
1302
1303 if(!graphics || !string || !font || !brush || !rect)
1304 return InvalidParameter;
1305
1306 if((brush->bt != BrushTypeSolidColor)){
1307 FIXME("not implemented for given parameters\n");
1308 return NotImplemented;
1309 }
1310
1311 if(format)
1312 TRACE("may be ignoring some format flags: attr %x\n", format->attr);
1313
1314 if(length == -1) length = lstrlenW(string);
1315
1316 stringdup = GdipAlloc(length * sizeof(WCHAR));
1317 if(!stringdup) return OutOfMemory;
1318
1319 save_state = SaveDC(graphics->hdc);
1320 SetBkMode(graphics->hdc, TRANSPARENT);
1321 SetTextColor(graphics->hdc, brush->lb.lbColor);
1322
1323 rectcpy[3].X = rectcpy[0].X = rect->X;
1324 rectcpy[1].Y = rectcpy[0].Y = rect->Y;
1325 rectcpy[2].X = rectcpy[1].X = rect->X + rect->Width;
1326 rectcpy[3].Y = rectcpy[2].Y = rect->Y + rect->Height;
1327 transform_and_round_points(graphics, corners, rectcpy, 4);
1328
1329 if(roundr(rect->Width) == 0 && roundr(rect->Height) == 0){
1330 rel_width = rel_height = 1.0;
1331 nwidth = nheight = INT_MAX;
1332 }
1333 else{
1334 rel_width = sqrt((corners[1].x - corners[0].x) * (corners[1].x - corners[0].x) +
1335 (corners[1].y - corners[0].y) * (corners[1].y - corners[0].y))
1336 / rect->Width;
1337 rel_height = sqrt((corners[2].x - corners[1].x) * (corners[2].x - corners[1].x) +
1338 (corners[2].y - corners[1].y) * (corners[2].y - corners[1].y))
1339 / rect->Height;
1340
1341 nwidth = roundr(rel_width * rect->Width);
1342 nheight = roundr(rel_height * rect->Height);
1343 rgn = CreatePolygonRgn(corners, 4, ALTERNATE);
1344 SelectClipRgn(graphics->hdc, rgn);
1345 }
1346
1347 /* Use gdi to find the font, then perform transformations on it (height,
1348 * width, angle). */
1349 SelectObject(graphics->hdc, CreateFontIndirectW(&font->lfw));
1350 GetTextMetricsW(graphics->hdc, &textmet);
1351 memcpy(&lfw, &font->lfw, sizeof(LOGFONTW));
1352
1353 lfw.lfHeight = roundr(((REAL)lfw.lfHeight) * rel_height);
1354 lfw.lfWidth = roundr(textmet.tmAveCharWidth * rel_width);
1355
1356 pt[0].X = 0.0;
1357 pt[0].Y = 0.0;
1358 pt[1].X = 1.0;
1359 pt[1].Y = 0.0;
1360 GdipTransformMatrixPoints(graphics->worldtrans, pt, 2);
1361 angle = gdiplus_atan2((pt[1].Y - pt[0].Y), (pt[1].X - pt[0].X));
1362 ang_cos = cos(angle);
1363 ang_sin = sin(angle);
1364 lfw.lfEscapement = lfw.lfOrientation = -roundr((angle / M_PI) * 1800.0);
1365
1366 gdifont = CreateFontIndirectW(&lfw);
1367 DeleteObject(SelectObject(graphics->hdc, CreateFontIndirectW(&lfw)));
1368
1369 for(i = 0, j = 0; i < length; i++){
1370 if(!isprintW(string[i]) && (string[i] != '\n'))
1371 continue;
1372
1373 stringdup[j] = string[i];
1374 j++;
1375 }
1376
1377 stringdup[j] = 0;
1378 length = j;
1379
1380 while(sum < length){
1381 drawcoord.left = corners[0].x + roundr(ang_sin * (REAL) height);
1382 drawcoord.top = corners[0].y + roundr(ang_cos * (REAL) height);
1383
1384 GetTextExtentExPointW(graphics->hdc, stringdup + sum, length - sum,
1385 nwidth, &fit, NULL, &size);
1386 fitcpy = fit;
1387
1388 if(fit == 0){
1389 DrawTextW(graphics->hdc, stringdup + sum, 1, &drawcoord, DT_NOCLIP |
1390 DT_EXPANDTABS);
1391 break;
1392 }
1393
1394 for(lret = 0; lret < fit; lret++)
1395 if(*(stringdup + sum + lret) == '\n')
1396 break;
1397
1398 /* Line break code (may look strange, but it imitates windows). */
1399 if(lret < fit)
1400 fit = lret; /* this is not an off-by-one error */
1401 else if(fit < (length - sum)){
1402 if(*(stringdup + sum + fit) == ' ')
1403 while(*(stringdup + sum + fit) == ' ')
1404 fit++;
1405 else
1406 while(*(stringdup + sum + fit - 1) != ' '){
1407 fit--;
1408
1409 if(*(stringdup + sum + fit) == '\t')
1410 break;
1411
1412 if(fit == 0){
1413 fit = fitcpy;
1414 break;
1415 }
1416 }
1417 }
1418 DrawTextW(graphics->hdc, stringdup + sum, min(length - sum, fit),
1419 &drawcoord, DT_NOCLIP | DT_EXPANDTABS);
1420
1421 sum += fit + (lret < fitcpy ? 1 : 0);
1422 height += size.cy;
1423
1424 if(height > nheight)
1425 break;
1426
1427 /* Stop if this was a linewrap (but not if it was a linebreak). */
1428 if((lret == fitcpy) && format && (format->attr & StringFormatFlagsNoWrap))
1429 break;
1430 }
1431
1432 GdipFree(stringdup);
1433 DeleteObject(rgn);
1434 DeleteObject(gdifont);
1435
1436 RestoreDC(graphics->hdc, save_state);
1437
1438 return Ok;
1439 }
1440
1441 GpStatus WINGDIPAPI GdipFillPath(GpGraphics *graphics, GpBrush *brush, GpPath *path)
1442 {
1443 INT save_state;
1444 GpStatus retval;
1445
1446 if(!brush || !graphics || !path)
1447 return InvalidParameter;
1448
1449 save_state = SaveDC(graphics->hdc);
1450 EndPath(graphics->hdc);
1451 SelectObject(graphics->hdc, brush->gdibrush);
1452 SetPolyFillMode(graphics->hdc, (path->fill == FillModeAlternate ? ALTERNATE
1453 : WINDING));
1454
1455 BeginPath(graphics->hdc);
1456 retval = draw_poly(graphics, NULL, path->pathdata.Points,
1457 path->pathdata.Types, path->pathdata.Count, FALSE);
1458
1459 if(retval != Ok)
1460 goto end;
1461
1462 EndPath(graphics->hdc);
1463 FillPath(graphics->hdc);
1464
1465 retval = Ok;
1466
1467 end:
1468 RestoreDC(graphics->hdc, save_state);
1469
1470 return retval;
1471 }
1472
1473 GpStatus WINGDIPAPI GdipFillPie(GpGraphics *graphics, GpBrush *brush, REAL x,
1474 REAL y, REAL width, REAL height, REAL startAngle, REAL sweepAngle)
1475 {
1476 INT save_state;
1477
1478 if(!graphics || !brush)
1479 return InvalidParameter;
1480
1481 save_state = SaveDC(graphics->hdc);
1482 EndPath(graphics->hdc);
1483 SelectObject(graphics->hdc, brush->gdibrush);
1484 SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
1485
1486 draw_pie(graphics, x, y, width, height, startAngle, sweepAngle);
1487
1488 RestoreDC(graphics->hdc, save_state);
1489
1490 return Ok;
1491 }
1492
1493 GpStatus WINGDIPAPI GdipFillPolygon(GpGraphics *graphics, GpBrush *brush,
1494 GDIPCONST GpPointF *points, INT count, GpFillMode fillMode)
1495 {
1496 INT save_state;
1497 GpPointF *ptf = NULL;
1498 POINT *pti = NULL;
1499 GpStatus retval = Ok;
1500
1501 if(!graphics || !brush || !points || !count)
1502 return InvalidParameter;
1503
1504 ptf = GdipAlloc(count * sizeof(GpPointF));
1505 pti = GdipAlloc(count * sizeof(POINT));
1506 if(!ptf || !pti){
1507 retval = OutOfMemory;
1508 goto end;
1509 }
1510
1511 memcpy(ptf, points, count * sizeof(GpPointF));
1512
1513 save_state = SaveDC(graphics->hdc);
1514 EndPath(graphics->hdc);
1515 SelectObject(graphics->hdc, brush->gdibrush);
1516 SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
1517 SetPolyFillMode(graphics->hdc, (fillMode == FillModeAlternate ? ALTERNATE
1518 : WINDING));
1519
1520 transform_and_round_points(graphics, pti, ptf, count);
1521 Polygon(graphics->hdc, pti, count);
1522
1523 RestoreDC(graphics->hdc, save_state);
1524
1525 end:
1526 GdipFree(ptf);
1527 GdipFree(pti);
1528
1529 return retval;
1530 }
1531
1532 GpStatus WINGDIPAPI GdipFillPolygonI(GpGraphics *graphics, GpBrush *brush,
1533 GDIPCONST GpPoint *points, INT count, GpFillMode fillMode)
1534 {
1535 INT save_state, i;
1536 GpPointF *ptf = NULL;
1537 POINT *pti = NULL;
1538 GpStatus retval = Ok;
1539
1540 if(!graphics || !brush || !points || !count)
1541 return InvalidParameter;
1542
1543 ptf = GdipAlloc(count * sizeof(GpPointF));
1544 pti = GdipAlloc(count * sizeof(POINT));
1545 if(!ptf || !pti){
1546 retval = OutOfMemory;
1547 goto end;
1548 }
1549
1550 for(i = 0; i < count; i ++){
1551 ptf[i].X = (REAL) points[i].X;
1552 ptf[i].Y = (REAL) points[i].Y;
1553 }
1554
1555 save_state = SaveDC(graphics->hdc);
1556 EndPath(graphics->hdc);
1557 SelectObject(graphics->hdc, brush->gdibrush);
1558 SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
1559 SetPolyFillMode(graphics->hdc, (fillMode == FillModeAlternate ? ALTERNATE
1560 : WINDING));
1561
1562 transform_and_round_points(graphics, pti, ptf, count);
1563 Polygon(graphics->hdc, pti, count);
1564
1565 RestoreDC(graphics->hdc, save_state);
1566
1567 end:
1568 GdipFree(ptf);
1569 GdipFree(pti);
1570
1571 return retval;
1572 }
1573
1574 GpStatus WINGDIPAPI GdipFillRectangle(GpGraphics *graphics, GpBrush *brush,
1575 REAL x, REAL y, REAL width, REAL height)
1576 {
1577 INT save_state;
1578 GpPointF ptf[4];
1579 POINT pti[4];
1580
1581 if(!graphics || !brush)
1582 return InvalidParameter;
1583
1584 ptf[0].X = x;
1585 ptf[0].Y = y;
1586 ptf[1].X = x + width;
1587 ptf[1].Y = y;
1588 ptf[2].X = x + width;
1589 ptf[2].Y = y + height;
1590 ptf[3].X = x;
1591 ptf[3].Y = y + height;
1592
1593 save_state = SaveDC(graphics->hdc);
1594 EndPath(graphics->hdc);
1595 SelectObject(graphics->hdc, brush->gdibrush);
1596 SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
1597
1598 transform_and_round_points(graphics, pti, ptf, 4);
1599
1600 Polygon(graphics->hdc, pti, 4);
1601
1602 RestoreDC(graphics->hdc, save_state);
1603
1604 return Ok;
1605 }
1606
1607 GpStatus WINGDIPAPI GdipFillRectangleI(GpGraphics *graphics, GpBrush *brush,
1608 INT x, INT y, INT width, INT height)
1609 {
1610 INT save_state;
1611 GpPointF ptf[4];
1612 POINT pti[4];
1613
1614 if(!graphics || !brush)
1615 return InvalidParameter;
1616
1617 ptf[0].X = x;
1618 ptf[0].Y = y;
1619 ptf[1].X = x + width;
1620 ptf[1].Y = y;
1621 ptf[2].X = x + width;
1622 ptf[2].Y = y + height;
1623 ptf[3].X = x;
1624 ptf[3].Y = y + height;
1625
1626 save_state = SaveDC(graphics->hdc);
1627 EndPath(graphics->hdc);
1628 SelectObject(graphics->hdc, brush->gdibrush);
1629 SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
1630
1631 transform_and_round_points(graphics, pti, ptf, 4);
1632
1633 Polygon(graphics->hdc, pti, 4);
1634
1635 RestoreDC(graphics->hdc, save_state);
1636
1637 return Ok;
1638 }
1639
1640 /* FIXME: Compositing mode is not used anywhere except the getter/setter. */
1641 GpStatus WINGDIPAPI GdipGetCompositingMode(GpGraphics *graphics,
1642 CompositingMode *mode)
1643 {
1644 if(!graphics || !mode)
1645 return InvalidParameter;
1646
1647 *mode = graphics->compmode;
1648
1649 return Ok;
1650 }
1651
1652 /* FIXME: Compositing quality is not used anywhere except the getter/setter. */
1653 GpStatus WINGDIPAPI GdipGetCompositingQuality(GpGraphics *graphics,
1654 CompositingQuality *quality)
1655 {
1656 if(!graphics || !quality)
1657 return InvalidParameter;
1658
1659 *quality = graphics->compqual;
1660
1661 return Ok;
1662 }
1663
1664 /* FIXME: Interpolation mode is not used anywhere except the getter/setter. */
1665 GpStatus WINGDIPAPI GdipGetInterpolationMode(GpGraphics *graphics,
1666 InterpolationMode *mode)
1667 {
1668 if(!graphics || !mode)
1669 return InvalidParameter;
1670
1671 *mode = graphics->interpolation;
1672
1673 return Ok;
1674 }
1675
1676 GpStatus WINGDIPAPI GdipGetPageScale(GpGraphics *graphics, REAL *scale)
1677 {
1678 if(!graphics || !scale)
1679 return InvalidParameter;
1680
1681 *scale = graphics->scale;
1682
1683 return Ok;
1684 }
1685
1686 GpStatus WINGDIPAPI GdipGetPageUnit(GpGraphics *graphics, GpUnit *unit)
1687 {
1688 if(!graphics || !unit)
1689 return InvalidParameter;
1690
1691 *unit = graphics->unit;
1692
1693 return Ok;
1694 }
1695
1696 /* FIXME: Pixel offset mode is not used anywhere except the getter/setter. */
1697 GpStatus WINGDIPAPI GdipGetPixelOffsetMode(GpGraphics *graphics, PixelOffsetMode
1698 *mode)
1699 {
1700 if(!graphics || !mode)
1701 return InvalidParameter;
1702
1703 *mode = graphics->pixeloffset;
1704
1705 return Ok;
1706 }
1707
1708 /* FIXME: Smoothing mode is not used anywhere except the getter/setter. */
1709 GpStatus WINGDIPAPI GdipGetSmoothingMode(GpGraphics *graphics, SmoothingMode *mode)
1710 {
1711 if(!graphics || !mode)
1712 return InvalidParameter;
1713
1714 *mode = graphics->smoothing;
1715
1716 return Ok;
1717 }
1718
1719 /* FIXME: Text rendering hint is not used anywhere except the getter/setter. */
1720 GpStatus WINGDIPAPI GdipGetTextRenderingHint(GpGraphics *graphics,
1721 TextRenderingHint *hint)
1722 {
1723 if(!graphics || !hint)
1724 return InvalidParameter;
1725
1726 *hint = graphics->texthint;
1727
1728 return Ok;
1729 }
1730
1731 GpStatus WINGDIPAPI GdipGetWorldTransform(GpGraphics *graphics, GpMatrix *matrix)
1732 {
1733 if(!graphics || !matrix)
1734 return InvalidParameter;
1735
1736 memcpy(matrix, graphics->worldtrans, sizeof(GpMatrix));
1737 return Ok;
1738 }
1739
1740 /* Find the smallest rectangle that bounds the text when it is printed in rect
1741 * according to the format options listed in format. If rect has 0 width and
1742 * height, then just find the smallest rectangle that bounds the text when it's
1743 * printed at location (rect->X, rect-Y). */
1744 GpStatus WINGDIPAPI GdipMeasureString(GpGraphics *graphics,
1745 GDIPCONST WCHAR *string, INT length, GDIPCONST GpFont *font,
1746 GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format, RectF *bounds,
1747 INT *codepointsfitted, INT *linesfilled)
1748 {
1749 HFONT oldfont;
1750 WCHAR* stringdup;
1751 INT sum = 0, height = 0, fit, fitcpy, max_width = 0, i, j, lret, nwidth,
1752 nheight;
1753 SIZE size;
1754
1755 if(!graphics || !string || !font || !rect)
1756 return InvalidParameter;
1757
1758 if(codepointsfitted || linesfilled){
1759 FIXME("not implemented for given parameters\n");
1760 return NotImplemented;
1761 }
1762
1763 if(format)
1764 TRACE("may be ignoring some format flags: attr %x\n", format->attr);
1765
1766 if(length == -1) length = lstrlenW(string);
1767
1768 stringdup = GdipAlloc(length * sizeof(WCHAR));
1769 if(!stringdup) return OutOfMemory;
1770
1771 oldfont = SelectObject(graphics->hdc, CreateFontIndirectW(&font->lfw));
1772 nwidth = roundr(rect->Width);
1773 nheight = roundr(rect->Height);
1774
1775 if((nwidth == 0) && (nheight == 0))
1776 nwidth = nheight = INT_MAX;
1777
1778 for(i = 0, j = 0; i < length; i++){
1779 if(!isprintW(string[i]) && (string[i] != '\n'))
1780 continue;
1781
1782 stringdup[j] = string[i];
1783 j++;
1784 }
1785
1786 stringdup[j] = 0;
1787 length = j;
1788
1789 while(sum < length){
1790 GetTextExtentExPointW(graphics->hdc, stringdup + sum, length - sum,
1791 nwidth, &fit, NULL, &size);
1792 fitcpy = fit;
1793
1794 if(fit == 0)
1795 break;
1796
1797 for(lret = 0; lret < fit; lret++)
1798 if(*(stringdup + sum + lret) == '\n')
1799 break;
1800
1801 /* Line break code (may look strange, but it imitates windows). */
1802 if(lret < fit)
1803 fit = lret; /* this is not an off-by-one error */
1804 else if(fit < (length - sum)){
1805 if(*(stringdup + sum + fit) == ' ')
1806 while(*(stringdup + sum + fit) == ' ')
1807 fit++;
1808 else
1809 while(*(stringdup + sum + fit - 1) != ' '){
1810 fit--;
1811
1812 if(*(stringdup + sum + fit) == '\t')
1813 break;
1814
1815 if(fit == 0){
1816 fit = fitcpy;
1817 break;
1818 }
1819 }
1820 }
1821
1822 GetTextExtentExPointW(graphics->hdc, stringdup + sum, fit,
1823 nwidth, &j, NULL, &size);
1824
1825 sum += fit + (lret < fitcpy ? 1 : 0);
1826 height += size.cy;
1827 max_width = max(max_width, size.cx);
1828
1829 if(height > nheight)
1830 break;
1831
1832 /* Stop if this was a linewrap (but not if it was a linebreak). */
1833 if((lret == fitcpy) && format && (format->attr & StringFormatFlagsNoWrap))
1834 break;
1835 }
1836
1837 bounds->X = rect->X;
1838 bounds->Y = rect->Y;
1839 bounds->Width = (REAL)max_width;
1840 bounds->Height = (REAL) min(height, nheight);
1841
1842 GdipFree(stringdup);
1843 DeleteObject(SelectObject(graphics->hdc, oldfont));
1844
1845 return Ok;
1846 }
1847
1848 GpStatus WINGDIPAPI GdipRestoreGraphics(GpGraphics *graphics, GraphicsState state)
1849 {
1850 static int calls;
1851
1852 if(!graphics)
1853 return InvalidParameter;
1854
1855 if(!(calls++))
1856 FIXME("graphics state not implemented\n");
1857
1858 return NotImplemented;
1859 }
1860
1861 GpStatus WINGDIPAPI GdipRotateWorldTransform(GpGraphics *graphics, REAL angle,
1862 GpMatrixOrder order)
1863 {
1864 if(!graphics)
1865 return InvalidParameter;
1866
1867 return GdipRotateMatrix(graphics->worldtrans, angle, order);
1868 }
1869
1870 GpStatus WINGDIPAPI GdipSaveGraphics(GpGraphics *graphics, GraphicsState *state)
1871 {
1872 static int calls;
1873
1874 if(!graphics || !state)
1875 return InvalidParameter;
1876
1877 if(!(calls++))
1878 FIXME("graphics state not implemented\n");
1879
1880 return NotImplemented;
1881 }
1882
1883 GpStatus WINGDIPAPI GdipScaleWorldTransform(GpGraphics *graphics, REAL sx,
1884 REAL sy, GpMatrixOrder order)
1885 {
1886 if(!graphics)
1887 return InvalidParameter;
1888
1889 return GdipScaleMatrix(graphics->worldtrans, sx, sy, order);
1890 }
1891
1892 GpStatus WINGDIPAPI GdipSetCompositingMode(GpGraphics *graphics,
1893 CompositingMode mode)
1894 {
1895 if(!graphics)
1896 return InvalidParameter;
1897
1898 graphics->compmode = mode;
1899
1900 return Ok;
1901 }
1902
1903 GpStatus WINGDIPAPI GdipSetCompositingQuality(GpGraphics *graphics,
1904 CompositingQuality quality)
1905 {
1906 if(!graphics)
1907 return InvalidParameter;
1908
1909 graphics->compqual = quality;
1910
1911 return Ok;
1912 }
1913
1914 GpStatus WINGDIPAPI GdipSetInterpolationMode(GpGraphics *graphics,
1915 InterpolationMode mode)
1916 {
1917 if(!graphics)
1918 return InvalidParameter;
1919
1920 graphics->interpolation = mode;
1921
1922 return Ok;
1923 }
1924
1925 GpStatus WINGDIPAPI GdipSetPageScale(GpGraphics *graphics, REAL scale)
1926 {
1927 if(!graphics || (scale <= 0.0))
1928 return InvalidParameter;
1929
1930 graphics->scale = scale;
1931
1932 return Ok;
1933 }
1934
1935 GpStatus WINGDIPAPI GdipSetPageUnit(GpGraphics *graphics, GpUnit unit)
1936 {
1937 if(!graphics || (unit == UnitWorld))
1938 return InvalidParameter;
1939
1940 graphics->unit = unit;
1941
1942 return Ok;
1943 }
1944
1945 GpStatus WINGDIPAPI GdipSetPixelOffsetMode(GpGraphics *graphics, PixelOffsetMode
1946 mode)
1947 {
1948 if(!graphics)
1949 return InvalidParameter;
1950
1951 graphics->pixeloffset = mode;
1952
1953 return Ok;
1954 }
1955
1956 GpStatus WINGDIPAPI GdipSetSmoothingMode(GpGraphics *graphics, SmoothingMode mode)
1957 {
1958 if(!graphics)
1959 return InvalidParameter;
1960
1961 graphics->smoothing = mode;
1962
1963 return Ok;
1964 }
1965
1966 GpStatus WINGDIPAPI GdipSetTextRenderingHint(GpGraphics *graphics,
1967 TextRenderingHint hint)
1968 {
1969 if(!graphics)
1970 return InvalidParameter;
1971
1972 graphics->texthint = hint;
1973
1974 return Ok;
1975 }
1976
1977 GpStatus WINGDIPAPI GdipSetWorldTransform(GpGraphics *graphics, GpMatrix *matrix)
1978 {
1979 if(!graphics || !matrix)
1980 return InvalidParameter;
1981
1982 GdipDeleteMatrix(graphics->worldtrans);
1983 return GdipCloneMatrix(matrix, &graphics->worldtrans);
1984 }
1985
1986 GpStatus WINGDIPAPI GdipTranslateWorldTransform(GpGraphics *graphics, REAL dx,
1987 REAL dy, GpMatrixOrder order)
1988 {
1989 if(!graphics)
1990 return InvalidParameter;
1991
1992 return GdipTranslateMatrix(graphics->worldtrans, dx, dy, order);
1993 }
Windows API implementation