?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
gdiplus: Implemented GdipDrawCurve2I.
[wine.git] / dlls / gdiplus / graphics.c
blobd918d9917f759750566ef2183f259583e61902a7
1 /*
2 * Copyright (C) 2007 Google (Evan Stade)
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
17 */
18
19 #include <stdarg.h>
20 #include <math.h>
21 #include <limits.h>
22
23 #include "windef.h"
24 #include "winbase.h"
25 #include "winuser.h"
26 #include "wingdi.h"
27 #include "wine/unicode.h"
28
29 #define COBJMACROS
30 #include "objbase.h"
31 #include "ocidl.h"
32 #include "olectl.h"
33 #include "ole2.h"
34
35 #include "winreg.h"
36 #include "shlwapi.h"
37
38 #include "gdiplus.h"
39 #include "gdiplus_private.h"
40 #include "wine/debug.h"
41
42 WINE_DEFAULT_DEBUG_CHANNEL(gdiplus);
43
44 /* looks-right constants */
45 #define TENSION_CONST (0.3)
46 #define ANCHOR_WIDTH (2.0)
47 #define MAX_ITERS (50)
48
49 /* Converts angle (in degrees) to x/y coordinates */
50 static void deg2xy(REAL angle, REAL x_0, REAL y_0, REAL *x, REAL *y)
51 {
52 REAL radAngle, hypotenuse;
53
54 radAngle = deg2rad(angle);
55 hypotenuse = 50.0; /* arbitrary */
56
57 *x = x_0 + cos(radAngle) * hypotenuse;
58 *y = y_0 + sin(radAngle) * hypotenuse;
59 }
60
61 /* Converts from gdiplus path point type to gdi path point type. */
62 static BYTE convert_path_point_type(BYTE type)
63 {
64 BYTE ret;
65
66 switch(type & PathPointTypePathTypeMask){
67 case PathPointTypeBezier:
68 ret = PT_BEZIERTO;
69 break;
70 case PathPointTypeLine:
71 ret = PT_LINETO;
72 break;
73 case PathPointTypeStart:
74 ret = PT_MOVETO;
75 break;
76 default:
77 ERR("Bad point type\n");
78 return 0;
79 }
80
81 if(type & PathPointTypeCloseSubpath)
82 ret |= PT_CLOSEFIGURE;
83
84 return ret;
85 }
86
87 static INT prepare_dc(GpGraphics *graphics, GpPen *pen)
88 {
89 HPEN gdipen;
90 REAL width;
91 INT save_state = SaveDC(graphics->hdc), i, numdashes;
92 GpPointF pt[2];
93 DWORD dash_array[MAX_DASHLEN];
94
95 EndPath(graphics->hdc);
96
97 if(pen->unit == UnitPixel){
98 width = pen->width;
99 }
100 else{
101 /* Get an estimate for the amount the pen width is affected by the world
102 * transform. (This is similar to what some of the wine drivers do.) */
103 pt[0].X = 0.0;
104 pt[0].Y = 0.0;
105 pt[1].X = 1.0;
106 pt[1].Y = 1.0;
107 GdipTransformMatrixPoints(graphics->worldtrans, pt, 2);
108 width = sqrt((pt[1].X - pt[0].X) * (pt[1].X - pt[0].X) +
109 (pt[1].Y - pt[0].Y) * (pt[1].Y - pt[0].Y)) / sqrt(2.0);
110
111 width *= pen->width * convert_unit(graphics->hdc,
112 pen->unit == UnitWorld ? graphics->unit : pen->unit);
113 }
114
115 if(pen->dash == DashStyleCustom){
116 numdashes = min(pen->numdashes, MAX_DASHLEN);
117
118 TRACE("dashes are: ");
119 for(i = 0; i < numdashes; i++){
120 dash_array[i] = roundr(width * pen->dashes[i]);
121 TRACE("%d, ", dash_array[i]);
122 }
123 TRACE("\n and the pen style is %x\n", pen->style);
124
125 gdipen = ExtCreatePen(pen->style, roundr(width), &pen->brush->lb,
126 numdashes, dash_array);
127 }
128 else
129 gdipen = ExtCreatePen(pen->style, roundr(width), &pen->brush->lb, 0, NULL);
130
131 SelectObject(graphics->hdc, gdipen);
132
133 return save_state;
134 }
135
136 static void restore_dc(GpGraphics *graphics, INT state)
137 {
138 DeleteObject(SelectObject(graphics->hdc, GetStockObject(NULL_PEN)));
139 RestoreDC(graphics->hdc, state);
140 }
141
142 /* This helper applies all the changes that the points listed in ptf need in
143 * order to be drawn on the device context. In the end, this should include at
144 * least:
145 * -scaling by page unit
146 * -applying world transformation
147 * -converting from float to int
148 * Native gdiplus uses gdi32 to do all this (via SetMapMode, SetViewportExtEx,
149 * SetWindowExtEx, SetWorldTransform, etc.) but we cannot because we are using
150 * gdi to draw, and these functions would irreparably mess with line widths.
151 */
152 static void transform_and_round_points(GpGraphics *graphics, POINT *pti,
153 GpPointF *ptf, INT count)
154 {
155 REAL unitscale;
156 GpMatrix *matrix;
157 int i;
158
159 unitscale = convert_unit(graphics->hdc, graphics->unit);
160
161 /* apply page scale */
162 if(graphics->unit != UnitDisplay)
163 unitscale *= graphics->scale;
164
165 GdipCloneMatrix(graphics->worldtrans, &matrix);
166 GdipScaleMatrix(matrix, unitscale, unitscale, MatrixOrderAppend);
167 GdipTransformMatrixPoints(matrix, ptf, count);
168 GdipDeleteMatrix(matrix);
169
170 for(i = 0; i < count; i++){
171 pti[i].x = roundr(ptf[i].X);
172 pti[i].y = roundr(ptf[i].Y);
173 }
174 }
175
176 /* GdipDrawPie/GdipFillPie helper function */
177 static void draw_pie(GpGraphics *graphics, REAL x, REAL y, REAL width,
178 REAL height, REAL startAngle, REAL sweepAngle)
179 {
180 GpPointF ptf[4];
181 POINT pti[4];
182
183 ptf[0].X = x;
184 ptf[0].Y = y;
185 ptf[1].X = x + width;
186 ptf[1].Y = y + height;
187
188 deg2xy(startAngle+sweepAngle, x + width / 2.0, y + width / 2.0, &ptf[2].X, &ptf[2].Y);
189 deg2xy(startAngle, x + width / 2.0, y + width / 2.0, &ptf[3].X, &ptf[3].Y);
190
191 transform_and_round_points(graphics, pti, ptf, 4);
192
193 Pie(graphics->hdc, pti[0].x, pti[0].y, pti[1].x, pti[1].y, pti[2].x,
194 pti[2].y, pti[3].x, pti[3].y);
195 }
196
197 /* GdipDrawCurve helper function.
198 * Calculates Bezier points from cardinal spline points. */
199 static void calc_curve_bezier(CONST GpPointF *pts, REAL tension, REAL *x1,
200 REAL *y1, REAL *x2, REAL *y2)
201 {
202 REAL xdiff, ydiff;
203
204 /* calculate tangent */
205 xdiff = pts[2].X - pts[0].X;
206 ydiff = pts[2].Y - pts[0].Y;
207
208 /* apply tangent to get control points */
209 *x1 = pts[1].X - tension * xdiff;
210 *y1 = pts[1].Y - tension * ydiff;
211 *x2 = pts[1].X + tension * xdiff;
212 *y2 = pts[1].Y + tension * ydiff;
213 }
214
215 /* GdipDrawCurve helper function.
216 * Calculates Bezier points from cardinal spline endpoints. */
217 static void calc_curve_bezier_endp(REAL xend, REAL yend, REAL xadj, REAL yadj,
218 REAL tension, REAL *x, REAL *y)
219 {
220 /* tangent at endpoints is the line from the endpoint to the adjacent point */
221 *x = roundr(tension * (xadj - xend) + xend);
222 *y = roundr(tension * (yadj - yend) + yend);
223 }
224
225 /* Draws the linecap the specified color and size on the hdc. The linecap is in
226 * direction of the line from x1, y1 to x2, y2 and is anchored on x2, y2. Probably
227 * should not be called on an hdc that has a path you care about. */
228 static void draw_cap(GpGraphics *graphics, COLORREF color, GpLineCap cap, REAL size,
229 const GpCustomLineCap *custom, REAL x1, REAL y1, REAL x2, REAL y2)
230 {
231 HGDIOBJ oldbrush = NULL, oldpen = NULL;
232 GpMatrix *matrix = NULL;
233 HBRUSH brush = NULL;
234 HPEN pen = NULL;
235 PointF ptf[4], *custptf = NULL;
236 POINT pt[4], *custpt = NULL;
237 BYTE *tp = NULL;
238 REAL theta, dsmall, dbig, dx, dy = 0.0;
239 INT i, count;
240 LOGBRUSH lb;
241 BOOL customstroke;
242
243 if((x1 == x2) && (y1 == y2))
244 return;
245
246 theta = gdiplus_atan2(y2 - y1, x2 - x1);
247
248 customstroke = (cap == LineCapCustom) && custom && (!custom->fill);
249 if(!customstroke){
250 brush = CreateSolidBrush(color);
251 lb.lbStyle = BS_SOLID;
252 lb.lbColor = color;
253 lb.lbHatch = 0;
254 pen = ExtCreatePen(PS_GEOMETRIC | PS_SOLID | PS_ENDCAP_FLAT |
255 PS_JOIN_MITER, 1, &lb, 0,
256 NULL);
257 oldbrush = SelectObject(graphics->hdc, brush);
258 oldpen = SelectObject(graphics->hdc, pen);
259 }
260
261 switch(cap){
262 case LineCapFlat:
263 break;
264 case LineCapSquare:
265 case LineCapSquareAnchor:
266 case LineCapDiamondAnchor:
267 size = size * (cap & LineCapNoAnchor ? ANCHOR_WIDTH : 1.0) / 2.0;
268 if(cap == LineCapDiamondAnchor){
269 dsmall = cos(theta + M_PI_2) * size;
270 dbig = sin(theta + M_PI_2) * size;
271 }
272 else{
273 dsmall = cos(theta + M_PI_4) * size;
274 dbig = sin(theta + M_PI_4) * size;
275 }
276
277 ptf[0].X = x2 - dsmall;
278 ptf[1].X = x2 + dbig;
279
280 ptf[0].Y = y2 - dbig;
281 ptf[3].Y = y2 + dsmall;
282
283 ptf[1].Y = y2 - dsmall;
284 ptf[2].Y = y2 + dbig;
285
286 ptf[3].X = x2 - dbig;
287 ptf[2].X = x2 + dsmall;
288
289 transform_and_round_points(graphics, pt, ptf, 4);
290 Polygon(graphics->hdc, pt, 4);
291
292 break;
293 case LineCapArrowAnchor:
294 size = size * 4.0 / sqrt(3.0);
295
296 dx = cos(M_PI / 6.0 + theta) * size;
297 dy = sin(M_PI / 6.0 + theta) * size;
298
299 ptf[0].X = x2 - dx;
300 ptf[0].Y = y2 - dy;
301
302 dx = cos(- M_PI / 6.0 + theta) * size;
303 dy = sin(- M_PI / 6.0 + theta) * size;
304
305 ptf[1].X = x2 - dx;
306 ptf[1].Y = y2 - dy;
307
308 ptf[2].X = x2;
309 ptf[2].Y = y2;
310
311 transform_and_round_points(graphics, pt, ptf, 3);
312 Polygon(graphics->hdc, pt, 3);
313
314 break;
315 case LineCapRoundAnchor:
316 dx = dy = ANCHOR_WIDTH * size / 2.0;
317
318 ptf[0].X = x2 - dx;
319 ptf[0].Y = y2 - dy;
320 ptf[1].X = x2 + dx;
321 ptf[1].Y = y2 + dy;
322
323 transform_and_round_points(graphics, pt, ptf, 2);
324 Ellipse(graphics->hdc, pt[0].x, pt[0].y, pt[1].x, pt[1].y);
325
326 break;
327 case LineCapTriangle:
328 size = size / 2.0;
329 dx = cos(M_PI_2 + theta) * size;
330 dy = sin(M_PI_2 + theta) * size;
331
332 ptf[0].X = x2 - dx;
333 ptf[0].Y = y2 - dy;
334 ptf[1].X = x2 + dx;
335 ptf[1].Y = y2 + dy;
336
337 dx = cos(theta) * size;
338 dy = sin(theta) * size;
339
340 ptf[2].X = x2 + dx;
341 ptf[2].Y = y2 + dy;
342
343 transform_and_round_points(graphics, pt, ptf, 3);
344 Polygon(graphics->hdc, pt, 3);
345
346 break;
347 case LineCapRound:
348 dx = dy = size / 2.0;
349
350 ptf[0].X = x2 - dx;
351 ptf[0].Y = y2 - dy;
352 ptf[1].X = x2 + dx;
353 ptf[1].Y = y2 + dy;
354
355 dx = -cos(M_PI_2 + theta) * size;
356 dy = -sin(M_PI_2 + theta) * size;
357
358 ptf[2].X = x2 - dx;
359 ptf[2].Y = y2 - dy;
360 ptf[3].X = x2 + dx;
361 ptf[3].Y = y2 + dy;
362
363 transform_and_round_points(graphics, pt, ptf, 4);
364 Pie(graphics->hdc, pt[0].x, pt[0].y, pt[1].x, pt[1].y, pt[2].x,
365 pt[2].y, pt[3].x, pt[3].y);
366
367 break;
368 case LineCapCustom:
369 if(!custom)
370 break;
371
372 count = custom->pathdata.Count;
373 custptf = GdipAlloc(count * sizeof(PointF));
374 custpt = GdipAlloc(count * sizeof(POINT));
375 tp = GdipAlloc(count);
376
377 if(!custptf || !custpt || !tp || (GdipCreateMatrix(&matrix) != Ok))
378 goto custend;
379
380 memcpy(custptf, custom->pathdata.Points, count * sizeof(PointF));
381
382 GdipScaleMatrix(matrix, size, size, MatrixOrderAppend);
383 GdipRotateMatrix(matrix, (180.0 / M_PI) * (theta - M_PI_2),
384 MatrixOrderAppend);
385 GdipTranslateMatrix(matrix, x2, y2, MatrixOrderAppend);
386 GdipTransformMatrixPoints(matrix, custptf, count);
387
388 transform_and_round_points(graphics, custpt, custptf, count);
389
390 for(i = 0; i < count; i++)
391 tp[i] = convert_path_point_type(custom->pathdata.Types[i]);
392
393 if(custom->fill){
394 BeginPath(graphics->hdc);
395 PolyDraw(graphics->hdc, custpt, tp, count);
396 EndPath(graphics->hdc);
397 StrokeAndFillPath(graphics->hdc);
398 }
399 else
400 PolyDraw(graphics->hdc, custpt, tp, count);
401
402 custend:
403 GdipFree(custptf);
404 GdipFree(custpt);
405 GdipFree(tp);
406 GdipDeleteMatrix(matrix);
407 break;
408 default:
409 break;
410 }
411
412 if(!customstroke){
413 SelectObject(graphics->hdc, oldbrush);
414 SelectObject(graphics->hdc, oldpen);
415 DeleteObject(brush);
416 DeleteObject(pen);
417 }
418 }
419
420 /* Shortens the line by the given percent by changing x2, y2.
421 * If percent is > 1.0 then the line will change direction.
422 * If percent is negative it can lengthen the line. */
423 static void shorten_line_percent(REAL x1, REAL y1, REAL *x2, REAL *y2, REAL percent)
424 {
425 REAL dist, theta, dx, dy;
426
427 if((y1 == *y2) && (x1 == *x2))
428 return;
429
430 dist = sqrt((*x2 - x1) * (*x2 - x1) + (*y2 - y1) * (*y2 - y1)) * -percent;
431 theta = gdiplus_atan2((*y2 - y1), (*x2 - x1));
432 dx = cos(theta) * dist;
433 dy = sin(theta) * dist;
434
435 *x2 = *x2 + dx;
436 *y2 = *y2 + dy;
437 }
438
439 /* Shortens the line by the given amount by changing x2, y2.
440 * If the amount is greater than the distance, the line will become length 0.
441 * If the amount is negative, it can lengthen the line. */
442 static void shorten_line_amt(REAL x1, REAL y1, REAL *x2, REAL *y2, REAL amt)
443 {
444 REAL dx, dy, percent;
445
446 dx = *x2 - x1;
447 dy = *y2 - y1;
448 if(dx == 0 && dy == 0)
449 return;
450
451 percent = amt / sqrt(dx * dx + dy * dy);
452 if(percent >= 1.0){
453 *x2 = x1;
454 *y2 = y1;
455 return;
456 }
457
458 shorten_line_percent(x1, y1, x2, y2, percent);
459 }
460
461 /* Draws lines between the given points, and if caps is true then draws an endcap
462 * at the end of the last line. */
463 static GpStatus draw_polyline(GpGraphics *graphics, GpPen *pen,
464 GDIPCONST GpPointF * pt, INT count, BOOL caps)
465 {
466 POINT *pti = NULL;
467 GpPointF *ptcopy = NULL;
468 GpStatus status = GenericError;
469
470 if(!count)
471 return Ok;
472
473 pti = GdipAlloc(count * sizeof(POINT));
474 ptcopy = GdipAlloc(count * sizeof(GpPointF));
475
476 if(!pti || !ptcopy){
477 status = OutOfMemory;
478 goto end;
479 }
480
481 memcpy(ptcopy, pt, count * sizeof(GpPointF));
482
483 if(caps){
484 if(pen->endcap == LineCapArrowAnchor)
485 shorten_line_amt(ptcopy[count-2].X, ptcopy[count-2].Y,
486 &ptcopy[count-1].X, &ptcopy[count-1].Y, pen->width);
487 else if((pen->endcap == LineCapCustom) && pen->customend)
488 shorten_line_amt(ptcopy[count-2].X, ptcopy[count-2].Y,
489 &ptcopy[count-1].X, &ptcopy[count-1].Y,
490 pen->customend->inset * pen->width);
491
492 if(pen->startcap == LineCapArrowAnchor)
493 shorten_line_amt(ptcopy[1].X, ptcopy[1].Y,
494 &ptcopy[0].X, &ptcopy[0].Y, pen->width);
495 else if((pen->startcap == LineCapCustom) && pen->customstart)
496 shorten_line_amt(ptcopy[1].X, ptcopy[1].Y,
497 &ptcopy[0].X, &ptcopy[0].Y,
498 pen->customstart->inset * pen->width);
499
500 draw_cap(graphics, pen->brush->lb.lbColor, pen->endcap, pen->width, pen->customend,
501 pt[count - 2].X, pt[count - 2].Y, pt[count - 1].X, pt[count - 1].Y);
502 draw_cap(graphics, pen->brush->lb.lbColor, pen->startcap, pen->width, pen->customstart,
503 pt[1].X, pt[1].Y, pt[0].X, pt[0].Y);
504 }
505
506 transform_and_round_points(graphics, pti, ptcopy, count);
507
508 if(Polyline(graphics->hdc, pti, count))
509 status = Ok;
510
511 end:
512 GdipFree(pti);
513 GdipFree(ptcopy);
514
515 return status;
516 }
517
518 /* Conducts a linear search to find the bezier points that will back off
519 * the endpoint of the curve by a distance of amt. Linear search works
520 * better than binary in this case because there are multiple solutions,
521 * and binary searches often find a bad one. I don't think this is what
522 * Windows does but short of rendering the bezier without GDI's help it's
523 * the best we can do. If rev then work from the start of the passed points
524 * instead of the end. */
525 static void shorten_bezier_amt(GpPointF * pt, REAL amt, BOOL rev)
526 {
527 GpPointF origpt[4];
528 REAL percent = 0.00, dx, dy, origx, origy, diff = -1.0;
529 INT i, first = 0, second = 1, third = 2, fourth = 3;
530
531 if(rev){
532 first = 3;
533 second = 2;
534 third = 1;
535 fourth = 0;
536 }
537
538 origx = pt[fourth].X;
539 origy = pt[fourth].Y;
540 memcpy(origpt, pt, sizeof(GpPointF) * 4);
541
542 for(i = 0; (i < MAX_ITERS) && (diff < amt); i++){
543 /* reset bezier points to original values */
544 memcpy(pt, origpt, sizeof(GpPointF) * 4);
545 /* Perform magic on bezier points. Order is important here.*/
546 shorten_line_percent(pt[third].X, pt[third].Y, &pt[fourth].X, &pt[fourth].Y, percent);
547 shorten_line_percent(pt[second].X, pt[second].Y, &pt[third].X, &pt[third].Y, percent);
548 shorten_line_percent(pt[third].X, pt[third].Y, &pt[fourth].X, &pt[fourth].Y, percent);
549 shorten_line_percent(pt[first].X, pt[first].Y, &pt[second].X, &pt[second].Y, percent);
550 shorten_line_percent(pt[second].X, pt[second].Y, &pt[third].X, &pt[third].Y, percent);
551 shorten_line_percent(pt[third].X, pt[third].Y, &pt[fourth].X, &pt[fourth].Y, percent);
552
553 dx = pt[fourth].X - origx;
554 dy = pt[fourth].Y - origy;
555
556 diff = sqrt(dx * dx + dy * dy);
557 percent += 0.0005 * amt;
558 }
559 }
560
561 /* Draws bezier curves between given points, and if caps is true then draws an
562 * endcap at the end of the last line. */
563 static GpStatus draw_polybezier(GpGraphics *graphics, GpPen *pen,
564 GDIPCONST GpPointF * pt, INT count, BOOL caps)
565 {
566 POINT *pti;
567 GpPointF *ptcopy;
568 GpStatus status = GenericError;
569
570 if(!count)
571 return Ok;
572
573 pti = GdipAlloc(count * sizeof(POINT));
574 ptcopy = GdipAlloc(count * sizeof(GpPointF));
575
576 if(!pti || !ptcopy){
577 status = OutOfMemory;
578 goto end;
579 }
580
581 memcpy(ptcopy, pt, count * sizeof(GpPointF));
582
583 if(caps){
584 if(pen->endcap == LineCapArrowAnchor)
585 shorten_bezier_amt(&ptcopy[count-4], pen->width, FALSE);
586 else if((pen->endcap == LineCapCustom) && pen->customend)
587 shorten_bezier_amt(&ptcopy[count-4], pen->width * pen->customend->inset,
588 FALSE);
589
590 if(pen->startcap == LineCapArrowAnchor)
591 shorten_bezier_amt(ptcopy, pen->width, TRUE);
592 else if((pen->startcap == LineCapCustom) && pen->customstart)
593 shorten_bezier_amt(ptcopy, pen->width * pen->customstart->inset, TRUE);
594
595 /* the direction of the line cap is parallel to the direction at the
596 * end of the bezier (which, if it has been shortened, is not the same
597 * as the direction from pt[count-2] to pt[count-1]) */
598 draw_cap(graphics, pen->brush->lb.lbColor, pen->endcap, pen->width, pen->customend,
599 pt[count - 1].X - (ptcopy[count - 1].X - ptcopy[count - 2].X),
600 pt[count - 1].Y - (ptcopy[count - 1].Y - ptcopy[count - 2].Y),
601 pt[count - 1].X, pt[count - 1].Y);
602
603 draw_cap(graphics, pen->brush->lb.lbColor, pen->startcap, pen->width, pen->customstart,
604 pt[0].X - (ptcopy[0].X - ptcopy[1].X),
605 pt[0].Y - (ptcopy[0].Y - ptcopy[1].Y), pt[0].X, pt[0].Y);
606 }
607
608 transform_and_round_points(graphics, pti, ptcopy, count);
609
610 PolyBezier(graphics->hdc, pti, count);
611
612 status = Ok;
613
614 end:
615 GdipFree(pti);
616 GdipFree(ptcopy);
617
618 return status;
619 }
620
621 /* Draws a combination of bezier curves and lines between points. */
622 static GpStatus draw_poly(GpGraphics *graphics, GpPen *pen, GDIPCONST GpPointF * pt,
623 GDIPCONST BYTE * types, INT count, BOOL caps)
624 {
625 POINT *pti = GdipAlloc(count * sizeof(POINT));
626 BYTE *tp = GdipAlloc(count);
627 GpPointF *ptcopy = GdipAlloc(count * sizeof(GpPointF));
628 INT i, j;
629 GpStatus status = GenericError;
630
631 if(!count){
632 status = Ok;
633 goto end;
634 }
635 if(!pti || !tp || !ptcopy){
636 status = OutOfMemory;
637 goto end;
638 }
639
640 for(i = 1; i < count; i++){
641 if((types[i] & PathPointTypePathTypeMask) == PathPointTypeBezier){
642 if((i + 2 >= count) || !(types[i + 1] & PathPointTypeBezier)
643 || !(types[i + 1] & PathPointTypeBezier)){
644 ERR("Bad bezier points\n");
645 goto end;
646 }
647 i += 2;
648 }
649 }
650
651 memcpy(ptcopy, pt, count * sizeof(GpPointF));
652
653 /* If we are drawing caps, go through the points and adjust them accordingly,
654 * and draw the caps. */
655 if(caps){
656 switch(types[count - 1] & PathPointTypePathTypeMask){
657 case PathPointTypeBezier:
658 if(pen->endcap == LineCapArrowAnchor)
659 shorten_bezier_amt(&ptcopy[count - 4], pen->width, FALSE);
660 else if((pen->endcap == LineCapCustom) && pen->customend)
661 shorten_bezier_amt(&ptcopy[count - 4],
662 pen->width * pen->customend->inset, FALSE);
663
664 draw_cap(graphics, pen->brush->lb.lbColor, pen->endcap, pen->width, pen->customend,
665 pt[count - 1].X - (ptcopy[count - 1].X - ptcopy[count - 2].X),
666 pt[count - 1].Y - (ptcopy[count - 1].Y - ptcopy[count - 2].Y),
667 pt[count - 1].X, pt[count - 1].Y);
668
669 break;
670 case PathPointTypeLine:
671 if(pen->endcap == LineCapArrowAnchor)
672 shorten_line_amt(ptcopy[count - 2].X, ptcopy[count - 2].Y,
673 &ptcopy[count - 1].X, &ptcopy[count - 1].Y,
674 pen->width);
675 else if((pen->endcap == LineCapCustom) && pen->customend)
676 shorten_line_amt(ptcopy[count - 2].X, ptcopy[count - 2].Y,
677 &ptcopy[count - 1].X, &ptcopy[count - 1].Y,
678 pen->customend->inset * pen->width);
679
680 draw_cap(graphics, pen->brush->lb.lbColor, pen->endcap, pen->width, pen->customend,
681 pt[count - 2].X, pt[count - 2].Y, pt[count - 1].X,
682 pt[count - 1].Y);
683
684 break;
685 default:
686 ERR("Bad path last point\n");
687 goto end;
688 }
689
690 /* Find start of points */
691 for(j = 1; j < count && ((types[j] & PathPointTypePathTypeMask)
692 == PathPointTypeStart); j++);
693
694 switch(types[j] & PathPointTypePathTypeMask){
695 case PathPointTypeBezier:
696 if(pen->startcap == LineCapArrowAnchor)
697 shorten_bezier_amt(&ptcopy[j - 1], pen->width, TRUE);
698 else if((pen->startcap == LineCapCustom) && pen->customstart)
699 shorten_bezier_amt(&ptcopy[j - 1],
700 pen->width * pen->customstart->inset, TRUE);
701
702 draw_cap(graphics, pen->brush->lb.lbColor, pen->startcap, pen->width, pen->customstart,
703 pt[j - 1].X - (ptcopy[j - 1].X - ptcopy[j].X),
704 pt[j - 1].Y - (ptcopy[j - 1].Y - ptcopy[j].Y),
705 pt[j - 1].X, pt[j - 1].Y);
706
707 break;
708 case PathPointTypeLine:
709 if(pen->startcap == LineCapArrowAnchor)
710 shorten_line_amt(ptcopy[j].X, ptcopy[j].Y,
711 &ptcopy[j - 1].X, &ptcopy[j - 1].Y,
712 pen->width);
713 else if((pen->startcap == LineCapCustom) && pen->customstart)
714 shorten_line_amt(ptcopy[j].X, ptcopy[j].Y,
715 &ptcopy[j - 1].X, &ptcopy[j - 1].Y,
716 pen->customstart->inset * pen->width);
717
718 draw_cap(graphics, pen->brush->lb.lbColor, pen->startcap, pen->width, pen->customstart,
719 pt[j].X, pt[j].Y, pt[j - 1].X,
720 pt[j - 1].Y);
721
722 break;
723 default:
724 ERR("Bad path points\n");
725 goto end;
726 }
727 }
728
729 transform_and_round_points(graphics, pti, ptcopy, count);
730
731 for(i = 0; i < count; i++){
732 tp[i] = convert_path_point_type(types[i]);
733 }
734
735 PolyDraw(graphics->hdc, pti, tp, count);
736
737 status = Ok;
738
739 end:
740 GdipFree(pti);
741 GdipFree(ptcopy);
742 GdipFree(tp);
743
744 return status;
745 }
746
747 GpStatus WINGDIPAPI GdipCreateFromHDC(HDC hdc, GpGraphics **graphics)
748 {
749 return GdipCreateFromHDC2(hdc, NULL, graphics);
750 }
751
752 GpStatus WINGDIPAPI GdipCreateFromHDC2(HDC hdc, HANDLE hDevice, GpGraphics **graphics)
753 {
754 GpStatus retval;
755
756 if(hDevice != NULL) {
757 FIXME("Don't know how to hadle parameter hDevice\n");
758 return NotImplemented;
759 }
760
761 if(hdc == NULL)
762 return OutOfMemory;
763
764 if(graphics == NULL)
765 return InvalidParameter;
766
767 *graphics = GdipAlloc(sizeof(GpGraphics));
768 if(!*graphics) return OutOfMemory;
769
770 if((retval = GdipCreateMatrix(&(*graphics)->worldtrans)) != Ok){
771 GdipFree(*graphics);
772 return retval;
773 }
774
775 (*graphics)->hdc = hdc;
776 (*graphics)->hwnd = NULL;
777 (*graphics)->smoothing = SmoothingModeDefault;
778 (*graphics)->compqual = CompositingQualityDefault;
779 (*graphics)->interpolation = InterpolationModeDefault;
780 (*graphics)->pixeloffset = PixelOffsetModeDefault;
781 (*graphics)->compmode = CompositingModeSourceOver;
782 (*graphics)->unit = UnitDisplay;
783 (*graphics)->scale = 1.0;
784
785 return Ok;
786 }
787
788 GpStatus WINGDIPAPI GdipCreateFromHWND(HWND hwnd, GpGraphics **graphics)
789 {
790 GpStatus ret;
791
792 if((ret = GdipCreateFromHDC(GetDC(hwnd), graphics)) != Ok)
793 return ret;
794
795 (*graphics)->hwnd = hwnd;
796
797 return Ok;
798 }
799
800 GpStatus WINGDIPAPI GdipCreateMetafileFromEmf(HENHMETAFILE hemf, BOOL delete,
801 GpMetafile **metafile)
802 {
803 static int calls;
804
805 if(!hemf || !metafile)
806 return InvalidParameter;
807
808 if(!(calls++))
809 FIXME("not implemented\n");
810
811 return NotImplemented;
812 }
813
814 GpStatus WINGDIPAPI GdipCreateMetafileFromWmf(HMETAFILE hwmf, BOOL delete,
815 GDIPCONST WmfPlaceableFileHeader * placeable, GpMetafile **metafile)
816 {
817 IStream *stream = NULL;
818 UINT read;
819 BYTE* copy;
820 HENHMETAFILE hemf;
821 GpStatus retval = GenericError;
822
823 if(!hwmf || !metafile || !placeable)
824 return InvalidParameter;
825
826 *metafile = NULL;
827 read = GetMetaFileBitsEx(hwmf, 0, NULL);
828 if(!read)
829 return GenericError;
830 copy = GdipAlloc(read);
831 GetMetaFileBitsEx(hwmf, read, copy);
832
833 hemf = SetWinMetaFileBits(read, copy, NULL, NULL);
834 GdipFree(copy);
835
836 read = GetEnhMetaFileBits(hemf, 0, NULL);
837 copy = GdipAlloc(read);
838 GetEnhMetaFileBits(hemf, read, copy);
839 DeleteEnhMetaFile(hemf);
840
841 if(CreateStreamOnHGlobal(copy, TRUE, &stream) != S_OK){
842 ERR("could not make stream\n");
843 GdipFree(copy);
844 goto err;
845 }
846
847 *metafile = GdipAlloc(sizeof(GpMetafile));
848 if(!*metafile){
849 retval = OutOfMemory;
850 goto err;
851 }
852
853 if(OleLoadPicture(stream, 0, FALSE, &IID_IPicture,
854 (LPVOID*) &((*metafile)->image.picture)) != S_OK)
855 goto err;
856
857
858 (*metafile)->image.type = ImageTypeMetafile;
859 (*metafile)->bounds.X = ((REAL) placeable->BoundingBox.Left) / ((REAL) placeable->Inch);
860 (*metafile)->bounds.Y = ((REAL) placeable->BoundingBox.Right) / ((REAL) placeable->Inch);
861 (*metafile)->bounds.Width = ((REAL) (placeable->BoundingBox.Right
862 - placeable->BoundingBox.Left)) / ((REAL) placeable->Inch);
863 (*metafile)->bounds.Height = ((REAL) (placeable->BoundingBox.Bottom
864 - placeable->BoundingBox.Top)) / ((REAL) placeable->Inch);
865 (*metafile)->unit = UnitInch;
866
867 if(delete)
868 DeleteMetaFile(hwmf);
869
870 return Ok;
871
872 err:
873 GdipFree(*metafile);
874 IStream_Release(stream);
875 return retval;
876 }
877
878 GpStatus WINGDIPAPI GdipCreateStreamOnFile(GDIPCONST WCHAR * filename,
879 UINT access, IStream **stream)
880 {
881 DWORD dwMode;
882 HRESULT ret;
883
884 if(!stream || !filename)
885 return InvalidParameter;
886
887 if(access & GENERIC_WRITE)
888 dwMode = STGM_SHARE_DENY_WRITE | STGM_WRITE | STGM_CREATE;
889 else if(access & GENERIC_READ)
890 dwMode = STGM_SHARE_DENY_WRITE | STGM_READ | STGM_FAILIFTHERE;
891 else
892 return InvalidParameter;
893
894 ret = SHCreateStreamOnFileW(filename, dwMode, stream);
895
896 return hresult_to_status(ret);
897 }
898
899 GpStatus WINGDIPAPI GdipDeleteGraphics(GpGraphics *graphics)
900 {
901 if(!graphics) return InvalidParameter;
902 if(graphics->hwnd)
903 ReleaseDC(graphics->hwnd, graphics->hdc);
904
905 GdipDeleteMatrix(graphics->worldtrans);
906 HeapFree(GetProcessHeap(), 0, graphics);
907
908 return Ok;
909 }
910
911 GpStatus WINGDIPAPI GdipDrawArc(GpGraphics *graphics, GpPen *pen, REAL x,
912 REAL y, REAL width, REAL height, REAL startAngle, REAL sweepAngle)
913 {
914 INT save_state, num_pts;
915 GpPointF points[MAX_ARC_PTS];
916 GpStatus retval;
917
918 if(!graphics || !pen || width <= 0 || height <= 0)
919 return InvalidParameter;
920
921 num_pts = arc2polybezier(points, x, y, width, height, startAngle, sweepAngle);
922
923 save_state = prepare_dc(graphics, pen);
924
925 retval = draw_polybezier(graphics, pen, points, num_pts, TRUE);
926
927 restore_dc(graphics, save_state);
928
929 return retval;
930 }
931
932 GpStatus WINGDIPAPI GdipDrawArcI(GpGraphics *graphics, GpPen *pen, INT x,
933 INT y, INT width, INT height, REAL startAngle, REAL sweepAngle)
934 {
935 INT save_state, num_pts;
936 GpPointF points[MAX_ARC_PTS];
937 GpStatus retval;
938
939 if(!graphics || !pen || width <= 0 || height <= 0)
940 return InvalidParameter;
941
942 num_pts = arc2polybezier(points, x, y, width, height, startAngle, sweepAngle);
943
944 save_state = prepare_dc(graphics, pen);
945
946 retval = draw_polybezier(graphics, pen, points, num_pts, TRUE);
947
948 restore_dc(graphics, save_state);
949
950 return retval;
951 }
952
953 GpStatus WINGDIPAPI GdipDrawBezier(GpGraphics *graphics, GpPen *pen, REAL x1,
954 REAL y1, REAL x2, REAL y2, REAL x3, REAL y3, REAL x4, REAL y4)
955 {
956 INT save_state;
957 GpPointF pt[4];
958 GpStatus retval;
959
960 if(!graphics || !pen)
961 return InvalidParameter;
962
963 pt[0].X = x1;
964 pt[0].Y = y1;
965 pt[1].X = x2;
966 pt[1].Y = y2;
967 pt[2].X = x3;
968 pt[2].Y = y3;
969 pt[3].X = x4;
970 pt[3].Y = y4;
971
972 save_state = prepare_dc(graphics, pen);
973
974 retval = draw_polybezier(graphics, pen, pt, 4, TRUE);
975
976 restore_dc(graphics, save_state);
977
978 return retval;
979 }
980
981 GpStatus WINGDIPAPI GdipDrawBezierI(GpGraphics *graphics, GpPen *pen, INT x1,
982 INT y1, INT x2, INT y2, INT x3, INT y3, INT x4, INT y4)
983 {
984 INT save_state;
985 GpPointF pt[4];
986 GpStatus retval;
987
988 if(!graphics || !pen)
989 return InvalidParameter;
990
991 pt[0].X = x1;
992 pt[0].Y = y1;
993 pt[1].X = x2;
994 pt[1].Y = y2;
995 pt[2].X = x3;
996 pt[2].Y = y3;
997 pt[3].X = x4;
998 pt[3].Y = y4;
999
1000 save_state = prepare_dc(graphics, pen);
1001
1002 retval = draw_polybezier(graphics, pen, pt, 4, TRUE);
1003
1004 restore_dc(graphics, save_state);
1005
1006 return retval;
1007 }
1008
1009 /* Approximates cardinal spline with Bezier curves. */
1010 GpStatus WINGDIPAPI GdipDrawCurve2(GpGraphics *graphics, GpPen *pen,
1011 GDIPCONST GpPointF *points, INT count, REAL tension)
1012 {
1013 /* PolyBezier expects count*3-2 points. */
1014 INT i, len_pt = count*3-2, save_state;
1015 GpPointF *pt;
1016 REAL x1, x2, y1, y2;
1017 GpStatus retval;
1018
1019 if(!graphics || !pen)
1020 return InvalidParameter;
1021
1022 pt = GdipAlloc(len_pt * sizeof(GpPointF));
1023 tension = tension * TENSION_CONST;
1024
1025 calc_curve_bezier_endp(points[0].X, points[0].Y, points[1].X, points[1].Y,
1026 tension, &x1, &y1);
1027
1028 pt[0].X = points[0].X;
1029 pt[0].Y = points[0].Y;
1030 pt[1].X = x1;
1031 pt[1].Y = y1;
1032
1033 for(i = 0; i < count-2; i++){
1034 calc_curve_bezier(&(points[i]), tension, &x1, &y1, &x2, &y2);
1035
1036 pt[3*i+2].X = x1;
1037 pt[3*i+2].Y = y1;
1038 pt[3*i+3].X = points[i+1].X;
1039 pt[3*i+3].Y = points[i+1].Y;
1040 pt[3*i+4].X = x2;
1041 pt[3*i+4].Y = y2;
1042 }
1043
1044 calc_curve_bezier_endp(points[count-1].X, points[count-1].Y,
1045 points[count-2].X, points[count-2].Y, tension, &x1, &y1);
1046
1047 pt[len_pt-2].X = x1;
1048 pt[len_pt-2].Y = y1;
1049 pt[len_pt-1].X = points[count-1].X;
1050 pt[len_pt-1].Y = points[count-1].Y;
1051
1052 save_state = prepare_dc(graphics, pen);
1053
1054 retval = draw_polybezier(graphics, pen, pt, len_pt, TRUE);
1055
1056 GdipFree(pt);
1057 restore_dc(graphics, save_state);
1058
1059 return retval;
1060 }
1061
1062 GpStatus WINGDIPAPI GdipDrawCurve2I(GpGraphics *graphics, GpPen *pen,
1063 GDIPCONST GpPoint *points, INT count, REAL tension)
1064 {
1065 GpPointF *pointsF;
1066 GpStatus ret;
1067 INT i;
1068
1069 if(!points || count <= 0)
1070 return InvalidParameter;
1071
1072 pointsF = GdipAlloc(sizeof(GpPointF)*count);
1073 if(!pointsF)
1074 return OutOfMemory;
1075
1076 for(i = 0; i < count; i++){
1077 pointsF[i].X = (REAL)points[i].X;
1078 pointsF[i].Y = (REAL)points[i].Y;
1079 }
1080
1081 ret = GdipDrawCurve2(graphics,pen,pointsF,count,tension);
1082 GdipFree(pointsF);
1083
1084 return ret;
1085 }
1086
1087 GpStatus WINGDIPAPI GdipDrawImageI(GpGraphics *graphics, GpImage *image, INT x,
1088 INT y)
1089 {
1090 UINT width, height, srcw, srch;
1091
1092 if(!graphics || !image)
1093 return InvalidParameter;
1094
1095 GdipGetImageWidth(image, &width);
1096 GdipGetImageHeight(image, &height);
1097
1098 srcw = width * (((REAL) INCH_HIMETRIC) /
1099 ((REAL) GetDeviceCaps(graphics->hdc, LOGPIXELSX)));
1100 srch = height * (((REAL) INCH_HIMETRIC) /
1101 ((REAL) GetDeviceCaps(graphics->hdc, LOGPIXELSY)));
1102
1103 if(image->type != ImageTypeMetafile){
1104 y += height;
1105 height *= -1;
1106 }
1107
1108 IPicture_Render(image->picture, graphics->hdc, x, y, width, height,
1109 0, 0, srcw, srch, NULL);
1110
1111 return Ok;
1112 }
1113
1114 /* FIXME: partially implemented (only works for rectangular parallelograms) */
1115 GpStatus WINGDIPAPI GdipDrawImagePointsRect(GpGraphics *graphics, GpImage *image,
1116 GDIPCONST GpPointF *points, INT count, REAL srcx, REAL srcy, REAL srcwidth,
1117 REAL srcheight, GpUnit srcUnit, GDIPCONST GpImageAttributes* imageAttributes,
1118 DrawImageAbort callback, VOID * callbackData)
1119 {
1120 GpPointF ptf[3];
1121 POINT pti[3];
1122 REAL dx, dy;
1123
1124 TRACE("%p %p %p %d %f %f %f %f %d %p %p %p\n", graphics, image, points, count,
1125 srcx, srcy, srcwidth, srcheight, srcUnit, imageAttributes, callback,
1126 callbackData);
1127
1128 if(!graphics || !image || !points || count != 3)
1129 return InvalidParameter;
1130
1131 if(srcUnit == UnitInch)
1132 dx = dy = (REAL) INCH_HIMETRIC;
1133 else if(srcUnit == UnitPixel){
1134 dx = ((REAL) INCH_HIMETRIC) /
1135 ((REAL) GetDeviceCaps(graphics->hdc, LOGPIXELSX));
1136 dy = ((REAL) INCH_HIMETRIC) /
1137 ((REAL) GetDeviceCaps(graphics->hdc, LOGPIXELSY));
1138 }
1139 else
1140 return NotImplemented;
1141
1142 memcpy(ptf, points, 3 * sizeof(GpPointF));
1143 transform_and_round_points(graphics, pti, ptf, 3);
1144
1145 /* IPicture renders bitmaps with the y-axis reversed
1146 * FIXME: flipping for unknown image type might not be correct. */
1147 if(image->type != ImageTypeMetafile){
1148 INT temp;
1149 temp = pti[0].y;
1150 pti[0].y = pti[2].y;
1151 pti[2].y = temp;
1152 }
1153
1154 if(IPicture_Render(image->picture, graphics->hdc,
1155 pti[0].x, pti[0].y, pti[1].x - pti[0].x, pti[2].y - pti[0].y,
1156 srcx * dx, srcy * dy,
1157 srcwidth * dx, srcheight * dy,
1158 NULL) != S_OK){
1159 if(callback)
1160 callback(callbackData);
1161 return GenericError;
1162 }
1163
1164 return Ok;
1165 }
1166
1167 GpStatus WINGDIPAPI GdipDrawImageRectRect(GpGraphics *graphics, GpImage *image,
1168 REAL dstx, REAL dsty, REAL dstwidth, REAL dstheight, REAL srcx, REAL srcy,
1169 REAL srcwidth, REAL srcheight, GpUnit srcUnit,
1170 GDIPCONST GpImageAttributes* imageattr, DrawImageAbort callback,
1171 VOID * callbackData)
1172 {
1173 GpPointF points[3];
1174
1175 points[0].X = dstx;
1176 points[0].Y = dsty;
1177 points[1].X = dstx + dstwidth;
1178 points[1].Y = dsty;
1179 points[2].X = dstx;
1180 points[2].Y = dsty + dstheight;
1181
1182 return GdipDrawImagePointsRect(graphics, image, points, 3, srcx, srcy,
1183 srcwidth, srcheight, srcUnit, imageattr, callback, callbackData);
1184 }
1185
1186 GpStatus WINGDIPAPI GdipDrawImageRectRectI(GpGraphics *graphics, GpImage *image,
1187 INT dstx, INT dsty, INT dstwidth, INT dstheight, INT srcx, INT srcy,
1188 INT srcwidth, INT srcheight, GpUnit srcUnit,
1189 GDIPCONST GpImageAttributes* imageAttributes, DrawImageAbort callback,
1190 VOID * callbackData)
1191 {
1192 GpPointF points[3];
1193
1194 points[0].X = dstx;
1195 points[0].Y = dsty;
1196 points[1].X = dstx + dstwidth;
1197 points[1].Y = dsty;
1198 points[2].X = dstx;
1199 points[2].Y = dsty + dstheight;
1200
1201 return GdipDrawImagePointsRect(graphics, image, points, 3, srcx, srcy,
1202 srcwidth, srcheight, srcUnit, imageAttributes, callback, callbackData);
1203 }
1204
1205 GpStatus WINGDIPAPI GdipDrawImageRect(GpGraphics *graphics, GpImage *image,
1206 REAL x, REAL y, REAL width, REAL height)
1207 {
1208 RectF bounds;
1209 GpUnit unit;
1210 GpStatus ret;
1211
1212 if(!graphics || !image)
1213 return InvalidParameter;
1214
1215 ret = GdipGetImageBounds(image, &bounds, &unit);
1216 if(ret != Ok)
1217 return ret;
1218
1219 return GdipDrawImageRectRect(graphics, image, x, y, width, height,
1220 bounds.X, bounds.Y, bounds.Width, bounds.Height,
1221 unit, NULL, NULL, NULL);
1222 }
1223
1224 GpStatus WINGDIPAPI GdipDrawImageRectI(GpGraphics *graphics, GpImage *image,
1225 INT x, INT y, INT width, INT height)
1226 {
1227 return GdipDrawImageRect(graphics, image, (REAL)x, (REAL)y, (REAL)width, (REAL)height);
1228 }
1229
1230 GpStatus WINGDIPAPI GdipDrawLine(GpGraphics *graphics, GpPen *pen, REAL x1,
1231 REAL y1, REAL x2, REAL y2)
1232 {
1233 INT save_state;
1234 GpPointF pt[2];
1235 GpStatus retval;
1236
1237 if(!pen || !graphics)
1238 return InvalidParameter;
1239
1240 pt[0].X = x1;
1241 pt[0].Y = y1;
1242 pt[1].X = x2;
1243 pt[1].Y = y2;
1244
1245 save_state = prepare_dc(graphics, pen);
1246
1247 retval = draw_polyline(graphics, pen, pt, 2, TRUE);
1248
1249 restore_dc(graphics, save_state);
1250
1251 return retval;
1252 }
1253
1254 GpStatus WINGDIPAPI GdipDrawLineI(GpGraphics *graphics, GpPen *pen, INT x1,
1255 INT y1, INT x2, INT y2)
1256 {
1257 INT save_state;
1258 GpPointF pt[2];
1259 GpStatus retval;
1260
1261 if(!pen || !graphics)
1262 return InvalidParameter;
1263
1264 pt[0].X = (REAL)x1;
1265 pt[0].Y = (REAL)y1;
1266 pt[1].X = (REAL)x2;
1267 pt[1].Y = (REAL)y2;
1268
1269 save_state = prepare_dc(graphics, pen);
1270
1271 retval = draw_polyline(graphics, pen, pt, 2, TRUE);
1272
1273 restore_dc(graphics, save_state);
1274
1275 return retval;
1276 }
1277
1278 GpStatus WINGDIPAPI GdipDrawLines(GpGraphics *graphics, GpPen *pen, GDIPCONST
1279 GpPointF *points, INT count)
1280 {
1281 INT save_state;
1282 GpStatus retval;
1283
1284 if(!pen || !graphics || (count < 2))
1285 return InvalidParameter;
1286
1287 save_state = prepare_dc(graphics, pen);
1288
1289 retval = draw_polyline(graphics, pen, points, count, TRUE);
1290
1291 restore_dc(graphics, save_state);
1292
1293 return retval;
1294 }
1295
1296 GpStatus WINGDIPAPI GdipDrawLinesI(GpGraphics *graphics, GpPen *pen, GDIPCONST
1297 GpPoint *points, INT count)
1298 {
1299 INT save_state;
1300 GpStatus retval;
1301 GpPointF *ptf = NULL;
1302 int i;
1303
1304 if(!pen || !graphics || (count < 2))
1305 return InvalidParameter;
1306
1307 ptf = GdipAlloc(count * sizeof(GpPointF));
1308 if(!ptf) return OutOfMemory;
1309
1310 for(i = 0; i < count; i ++){
1311 ptf[i].X = (REAL) points[i].X;
1312 ptf[i].Y = (REAL) points[i].Y;
1313 }
1314
1315 save_state = prepare_dc(graphics, pen);
1316
1317 retval = draw_polyline(graphics, pen, ptf, count, TRUE);
1318
1319 restore_dc(graphics, save_state);
1320
1321 GdipFree(ptf);
1322 return retval;
1323 }
1324
1325 GpStatus WINGDIPAPI GdipDrawPath(GpGraphics *graphics, GpPen *pen, GpPath *path)
1326 {
1327 INT save_state;
1328 GpStatus retval;
1329
1330 if(!pen || !graphics)
1331 return InvalidParameter;
1332
1333 save_state = prepare_dc(graphics, pen);
1334
1335 retval = draw_poly(graphics, pen, path->pathdata.Points,
1336 path->pathdata.Types, path->pathdata.Count, TRUE);
1337
1338 restore_dc(graphics, save_state);
1339
1340 return retval;
1341 }
1342
1343 GpStatus WINGDIPAPI GdipDrawPie(GpGraphics *graphics, GpPen *pen, REAL x,
1344 REAL y, REAL width, REAL height, REAL startAngle, REAL sweepAngle)
1345 {
1346 INT save_state;
1347
1348 if(!graphics || !pen)
1349 return InvalidParameter;
1350
1351 save_state = prepare_dc(graphics, pen);
1352 SelectObject(graphics->hdc, GetStockObject(NULL_BRUSH));
1353
1354 draw_pie(graphics, x, y, width, height, startAngle, sweepAngle);
1355
1356 restore_dc(graphics, save_state);
1357
1358 return Ok;
1359 }
1360
1361 GpStatus WINGDIPAPI GdipDrawPieI(GpGraphics *graphics, GpPen *pen, INT x,
1362 INT y, INT width, INT height, REAL startAngle, REAL sweepAngle)
1363 {
1364 return GdipDrawPie(graphics,pen,(REAL)x,(REAL)y,(REAL)width,(REAL)height,startAngle,sweepAngle);
1365 }
1366
1367 GpStatus WINGDIPAPI GdipDrawRectangle(GpGraphics *graphics, GpPen *pen, REAL x,
1368 REAL y, REAL width, REAL height)
1369 {
1370 INT save_state;
1371 GpPointF ptf[4];
1372 POINT pti[4];
1373
1374 if(!pen || !graphics)
1375 return InvalidParameter;
1376
1377 ptf[0].X = x;
1378 ptf[0].Y = y;
1379 ptf[1].X = x + width;
1380 ptf[1].Y = y;
1381 ptf[2].X = x + width;
1382 ptf[2].Y = y + height;
1383 ptf[3].X = x;
1384 ptf[3].Y = y + height;
1385
1386 save_state = prepare_dc(graphics, pen);
1387 SelectObject(graphics->hdc, GetStockObject(NULL_BRUSH));
1388
1389 transform_and_round_points(graphics, pti, ptf, 4);
1390 Polygon(graphics->hdc, pti, 4);
1391
1392 restore_dc(graphics, save_state);
1393
1394 return Ok;
1395 }
1396
1397 GpStatus WINGDIPAPI GdipDrawRectangleI(GpGraphics *graphics, GpPen *pen, INT x,
1398 INT y, INT width, INT height)
1399 {
1400 return GdipDrawRectangle(graphics,pen,(REAL)x,(REAL)y,(REAL)width,(REAL)height);
1401 }
1402
1403 GpStatus WINGDIPAPI GdipDrawRectangles(GpGraphics *graphics, GpPen *pen,
1404 GDIPCONST GpRectF* rects, INT count)
1405 {
1406 GpPointF *ptf;
1407 POINT *pti;
1408 INT save_state, i;
1409
1410 if(!graphics || !pen || !rects || count < 1)
1411 return InvalidParameter;
1412
1413 ptf = GdipAlloc(4 * count * sizeof(GpPointF));
1414 pti = GdipAlloc(4 * count * sizeof(POINT));
1415
1416 if(!ptf || !pti){
1417 GdipFree(ptf);
1418 GdipFree(pti);
1419 return OutOfMemory;
1420 }
1421
1422 for(i = 0; i < count; i++){
1423 ptf[4 * i + 3].X = ptf[4 * i].X = rects[i].X;
1424 ptf[4 * i + 1].Y = ptf[4 * i].Y = rects[i].Y;
1425 ptf[4 * i + 2].X = ptf[4 * i + 1].X = rects[i].X + rects[i].Width;
1426 ptf[4 * i + 3].Y = ptf[4 * i + 2].Y = rects[i].Y + rects[i].Height;
1427 }
1428
1429 save_state = prepare_dc(graphics, pen);
1430 SelectObject(graphics->hdc, GetStockObject(NULL_BRUSH));
1431
1432 transform_and_round_points(graphics, pti, ptf, 4 * count);
1433
1434 for(i = 0; i < count; i++)
1435 Polygon(graphics->hdc, &pti[4 * i], 4);
1436
1437 restore_dc(graphics, save_state);
1438
1439 GdipFree(ptf);
1440 GdipFree(pti);
1441
1442 return Ok;
1443 }
1444
1445 GpStatus WINGDIPAPI GdipDrawRectanglesI(GpGraphics *graphics, GpPen *pen,
1446 GDIPCONST GpRect* rects, INT count)
1447 {
1448 GpRectF *rectsF;
1449 GpStatus ret;
1450 INT i;
1451
1452 if(!rects || count<=0)
1453 return InvalidParameter;
1454
1455 rectsF = GdipAlloc(sizeof(GpRectF) * count);
1456 if(!rectsF)
1457 return OutOfMemory;
1458
1459 for(i = 0;i < count;i++){
1460 rectsF[i].X = (REAL)rects[i].X;
1461 rectsF[i].Y = (REAL)rects[i].Y;
1462 rectsF[i].Width = (REAL)rects[i].Width;
1463 rectsF[i].Height = (REAL)rects[i].Height;
1464 }
1465
1466 ret = GdipDrawRectangles(graphics, pen, rectsF, count);
1467 GdipFree(rectsF);
1468
1469 return ret;
1470 }
1471
1472 GpStatus WINGDIPAPI GdipDrawString(GpGraphics *graphics, GDIPCONST WCHAR *string,
1473 INT length, GDIPCONST GpFont *font, GDIPCONST RectF *rect,
1474 GDIPCONST GpStringFormat *format, GDIPCONST GpBrush *brush)
1475 {
1476 HRGN rgn = NULL;
1477 HFONT gdifont;
1478 LOGFONTW lfw;
1479 TEXTMETRICW textmet;
1480 GpPointF pt[2], rectcpy[4];
1481 POINT corners[4];
1482 WCHAR* stringdup;
1483 REAL angle, ang_cos, ang_sin, rel_width, rel_height;
1484 INT sum = 0, height = 0, fit, fitcpy, save_state, i, j, lret, nwidth,
1485 nheight;
1486 SIZE size;
1487 RECT drawcoord;
1488
1489 if(!graphics || !string || !font || !brush || !rect)
1490 return InvalidParameter;
1491
1492 if((brush->bt != BrushTypeSolidColor)){
1493 FIXME("not implemented for given parameters\n");
1494 return NotImplemented;
1495 }
1496
1497 if(format)
1498 TRACE("may be ignoring some format flags: attr %x\n", format->attr);
1499
1500 if(length == -1) length = lstrlenW(string);
1501
1502 stringdup = GdipAlloc(length * sizeof(WCHAR));
1503 if(!stringdup) return OutOfMemory;
1504
1505 save_state = SaveDC(graphics->hdc);
1506 SetBkMode(graphics->hdc, TRANSPARENT);
1507 SetTextColor(graphics->hdc, brush->lb.lbColor);
1508
1509 rectcpy[3].X = rectcpy[0].X = rect->X;
1510 rectcpy[1].Y = rectcpy[0].Y = rect->Y;
1511 rectcpy[2].X = rectcpy[1].X = rect->X + rect->Width;
1512 rectcpy[3].Y = rectcpy[2].Y = rect->Y + rect->Height;
1513 transform_and_round_points(graphics, corners, rectcpy, 4);
1514
1515 if(roundr(rect->Width) == 0 && roundr(rect->Height) == 0){
1516 rel_width = rel_height = 1.0;
1517 nwidth = nheight = INT_MAX;
1518 }
1519 else{
1520 rel_width = sqrt((corners[1].x - corners[0].x) * (corners[1].x - corners[0].x) +
1521 (corners[1].y - corners[0].y) * (corners[1].y - corners[0].y))
1522 / rect->Width;
1523 rel_height = sqrt((corners[2].x - corners[1].x) * (corners[2].x - corners[1].x) +
1524 (corners[2].y - corners[1].y) * (corners[2].y - corners[1].y))
1525 / rect->Height;
1526
1527 nwidth = roundr(rel_width * rect->Width);
1528 nheight = roundr(rel_height * rect->Height);
1529 rgn = CreatePolygonRgn(corners, 4, ALTERNATE);
1530 SelectClipRgn(graphics->hdc, rgn);
1531 }
1532
1533 /* Use gdi to find the font, then perform transformations on it (height,
1534 * width, angle). */
1535 SelectObject(graphics->hdc, CreateFontIndirectW(&font->lfw));
1536 GetTextMetricsW(graphics->hdc, &textmet);
1537 lfw = font->lfw;
1538
1539 lfw.lfHeight = roundr(((REAL)lfw.lfHeight) * rel_height);
1540 lfw.lfWidth = roundr(textmet.tmAveCharWidth * rel_width);
1541
1542 pt[0].X = 0.0;
1543 pt[0].Y = 0.0;
1544 pt[1].X = 1.0;
1545 pt[1].Y = 0.0;
1546 GdipTransformMatrixPoints(graphics->worldtrans, pt, 2);
1547 angle = gdiplus_atan2((pt[1].Y - pt[0].Y), (pt[1].X - pt[0].X));
1548 ang_cos = cos(angle);
1549 ang_sin = sin(angle);
1550 lfw.lfEscapement = lfw.lfOrientation = -roundr((angle / M_PI) * 1800.0);
1551
1552 gdifont = CreateFontIndirectW(&lfw);
1553 DeleteObject(SelectObject(graphics->hdc, CreateFontIndirectW(&lfw)));
1554
1555 for(i = 0, j = 0; i < length; i++){
1556 if(!isprintW(string[i]) && (string[i] != '\n'))
1557 continue;
1558
1559 stringdup[j] = string[i];
1560 j++;
1561 }
1562
1563 stringdup[j] = 0;
1564 length = j;
1565
1566 while(sum < length){
1567 drawcoord.left = corners[0].x + roundr(ang_sin * (REAL) height);
1568 drawcoord.top = corners[0].y + roundr(ang_cos * (REAL) height);
1569
1570 GetTextExtentExPointW(graphics->hdc, stringdup + sum, length - sum,
1571 nwidth, &fit, NULL, &size);
1572 fitcpy = fit;
1573
1574 if(fit == 0){
1575 DrawTextW(graphics->hdc, stringdup + sum, 1, &drawcoord, DT_NOCLIP |
1576 DT_EXPANDTABS);
1577 break;
1578 }
1579
1580 for(lret = 0; lret < fit; lret++)
1581 if(*(stringdup + sum + lret) == '\n')
1582 break;
1583
1584 /* Line break code (may look strange, but it imitates windows). */
1585 if(lret < fit)
1586 fit = lret; /* this is not an off-by-one error */
1587 else if(fit < (length - sum)){
1588 if(*(stringdup + sum + fit) == ' ')
1589 while(*(stringdup + sum + fit) == ' ')
1590 fit++;
1591 else
1592 while(*(stringdup + sum + fit - 1) != ' '){
1593 fit--;
1594
1595 if(*(stringdup + sum + fit) == '\t')
1596 break;
1597
1598 if(fit == 0){
1599 fit = fitcpy;
1600 break;
1601 }
1602 }
1603 }
1604 DrawTextW(graphics->hdc, stringdup + sum, min(length - sum, fit),
1605 &drawcoord, DT_NOCLIP | DT_EXPANDTABS);
1606
1607 sum += fit + (lret < fitcpy ? 1 : 0);
1608 height += size.cy;
1609
1610 if(height > nheight)
1611 break;
1612
1613 /* Stop if this was a linewrap (but not if it was a linebreak). */
1614 if((lret == fitcpy) && format && (format->attr & StringFormatFlagsNoWrap))
1615 break;
1616 }
1617
1618 GdipFree(stringdup);
1619 DeleteObject(rgn);
1620 DeleteObject(gdifont);
1621
1622 RestoreDC(graphics->hdc, save_state);
1623
1624 return Ok;
1625 }
1626
1627 GpStatus WINGDIPAPI GdipFillPath(GpGraphics *graphics, GpBrush *brush, GpPath *path)
1628 {
1629 INT save_state;
1630 GpStatus retval;
1631
1632 if(!brush || !graphics || !path)
1633 return InvalidParameter;
1634
1635 save_state = SaveDC(graphics->hdc);
1636 EndPath(graphics->hdc);
1637 SelectObject(graphics->hdc, brush->gdibrush);
1638 SetPolyFillMode(graphics->hdc, (path->fill == FillModeAlternate ? ALTERNATE
1639 : WINDING));
1640
1641 BeginPath(graphics->hdc);
1642 retval = draw_poly(graphics, NULL, path->pathdata.Points,
1643 path->pathdata.Types, path->pathdata.Count, FALSE);
1644
1645 if(retval != Ok)
1646 goto end;
1647
1648 EndPath(graphics->hdc);
1649 FillPath(graphics->hdc);
1650
1651 retval = Ok;
1652
1653 end:
1654 RestoreDC(graphics->hdc, save_state);
1655
1656 return retval;
1657 }
1658
1659 GpStatus WINGDIPAPI GdipFillPie(GpGraphics *graphics, GpBrush *brush, REAL x,
1660 REAL y, REAL width, REAL height, REAL startAngle, REAL sweepAngle)
1661 {
1662 INT save_state;
1663
1664 if(!graphics || !brush)
1665 return InvalidParameter;
1666
1667 save_state = SaveDC(graphics->hdc);
1668 EndPath(graphics->hdc);
1669 SelectObject(graphics->hdc, brush->gdibrush);
1670 SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
1671
1672 draw_pie(graphics, x, y, width, height, startAngle, sweepAngle);
1673
1674 RestoreDC(graphics->hdc, save_state);
1675
1676 return Ok;
1677 }
1678
1679 GpStatus WINGDIPAPI GdipFillPieI(GpGraphics *graphics, GpBrush *brush, INT x,
1680 INT y, INT width, INT height, REAL startAngle, REAL sweepAngle)
1681 {
1682 return GdipFillPie(graphics,brush,(REAL)x,(REAL)y,(REAL)width,(REAL)height,startAngle,sweepAngle);
1683 }
1684
1685 GpStatus WINGDIPAPI GdipFillPolygon(GpGraphics *graphics, GpBrush *brush,
1686 GDIPCONST GpPointF *points, INT count, GpFillMode fillMode)
1687 {
1688 INT save_state;
1689 GpPointF *ptf = NULL;
1690 POINT *pti = NULL;
1691 GpStatus retval = Ok;
1692
1693 if(!graphics || !brush || !points || !count)
1694 return InvalidParameter;
1695
1696 ptf = GdipAlloc(count * sizeof(GpPointF));
1697 pti = GdipAlloc(count * sizeof(POINT));
1698 if(!ptf || !pti){
1699 retval = OutOfMemory;
1700 goto end;
1701 }
1702
1703 memcpy(ptf, points, count * sizeof(GpPointF));
1704
1705 save_state = SaveDC(graphics->hdc);
1706 EndPath(graphics->hdc);
1707 SelectObject(graphics->hdc, brush->gdibrush);
1708 SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
1709 SetPolyFillMode(graphics->hdc, (fillMode == FillModeAlternate ? ALTERNATE
1710 : WINDING));
1711
1712 transform_and_round_points(graphics, pti, ptf, count);
1713 Polygon(graphics->hdc, pti, count);
1714
1715 RestoreDC(graphics->hdc, save_state);
1716
1717 end:
1718 GdipFree(ptf);
1719 GdipFree(pti);
1720
1721 return retval;
1722 }
1723
1724 GpStatus WINGDIPAPI GdipFillPolygonI(GpGraphics *graphics, GpBrush *brush,
1725 GDIPCONST GpPoint *points, INT count, GpFillMode fillMode)
1726 {
1727 INT save_state, i;
1728 GpPointF *ptf = NULL;
1729 POINT *pti = NULL;
1730 GpStatus retval = Ok;
1731
1732 if(!graphics || !brush || !points || !count)
1733 return InvalidParameter;
1734
1735 ptf = GdipAlloc(count * sizeof(GpPointF));
1736 pti = GdipAlloc(count * sizeof(POINT));
1737 if(!ptf || !pti){
1738 retval = OutOfMemory;
1739 goto end;
1740 }
1741
1742 for(i = 0; i < count; i ++){
1743 ptf[i].X = (REAL) points[i].X;
1744 ptf[i].Y = (REAL) points[i].Y;
1745 }
1746
1747 save_state = SaveDC(graphics->hdc);
1748 EndPath(graphics->hdc);
1749 SelectObject(graphics->hdc, brush->gdibrush);
1750 SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
1751 SetPolyFillMode(graphics->hdc, (fillMode == FillModeAlternate ? ALTERNATE
1752 : WINDING));
1753
1754 transform_and_round_points(graphics, pti, ptf, count);
1755 Polygon(graphics->hdc, pti, count);
1756
1757 RestoreDC(graphics->hdc, save_state);
1758
1759 end:
1760 GdipFree(ptf);
1761 GdipFree(pti);
1762
1763 return retval;
1764 }
1765
1766 GpStatus WINGDIPAPI GdipFillRectangle(GpGraphics *graphics, GpBrush *brush,
1767 REAL x, REAL y, REAL width, REAL height)
1768 {
1769 INT save_state;
1770 GpPointF ptf[4];
1771 POINT pti[4];
1772
1773 if(!graphics || !brush)
1774 return InvalidParameter;
1775
1776 ptf[0].X = x;
1777 ptf[0].Y = y;
1778 ptf[1].X = x + width;
1779 ptf[1].Y = y;
1780 ptf[2].X = x + width;
1781 ptf[2].Y = y + height;
1782 ptf[3].X = x;
1783 ptf[3].Y = y + height;
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 transform_and_round_points(graphics, pti, ptf, 4);
1791
1792 Polygon(graphics->hdc, pti, 4);
1793
1794 RestoreDC(graphics->hdc, save_state);
1795
1796 return Ok;
1797 }
1798
1799 GpStatus WINGDIPAPI GdipFillRectangleI(GpGraphics *graphics, GpBrush *brush,
1800 INT x, INT y, INT width, INT height)
1801 {
1802 INT save_state;
1803 GpPointF ptf[4];
1804 POINT pti[4];
1805
1806 if(!graphics || !brush)
1807 return InvalidParameter;
1808
1809 ptf[0].X = x;
1810 ptf[0].Y = y;
1811 ptf[1].X = x + width;
1812 ptf[1].Y = y;
1813 ptf[2].X = x + width;
1814 ptf[2].Y = y + height;
1815 ptf[3].X = x;
1816 ptf[3].Y = y + height;
1817
1818 save_state = SaveDC(graphics->hdc);
1819 EndPath(graphics->hdc);
1820 SelectObject(graphics->hdc, brush->gdibrush);
1821 SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
1822
1823 transform_and_round_points(graphics, pti, ptf, 4);
1824
1825 Polygon(graphics->hdc, pti, 4);
1826
1827 RestoreDC(graphics->hdc, save_state);
1828
1829 return Ok;
1830 }
1831
1832 /* FIXME: Compositing mode is not used anywhere except the getter/setter. */
1833 GpStatus WINGDIPAPI GdipGetCompositingMode(GpGraphics *graphics,
1834 CompositingMode *mode)
1835 {
1836 if(!graphics || !mode)
1837 return InvalidParameter;
1838
1839 *mode = graphics->compmode;
1840
1841 return Ok;
1842 }
1843
1844 /* FIXME: Compositing quality is not used anywhere except the getter/setter. */
1845 GpStatus WINGDIPAPI GdipGetCompositingQuality(GpGraphics *graphics,
1846 CompositingQuality *quality)
1847 {
1848 if(!graphics || !quality)
1849 return InvalidParameter;
1850
1851 *quality = graphics->compqual;
1852
1853 return Ok;
1854 }
1855
1856 /* FIXME: Interpolation mode is not used anywhere except the getter/setter. */
1857 GpStatus WINGDIPAPI GdipGetInterpolationMode(GpGraphics *graphics,
1858 InterpolationMode *mode)
1859 {
1860 if(!graphics || !mode)
1861 return InvalidParameter;
1862
1863 *mode = graphics->interpolation;
1864
1865 return Ok;
1866 }
1867
1868 GpStatus WINGDIPAPI GdipGetPageScale(GpGraphics *graphics, REAL *scale)
1869 {
1870 if(!graphics || !scale)
1871 return InvalidParameter;
1872
1873 *scale = graphics->scale;
1874
1875 return Ok;
1876 }
1877
1878 GpStatus WINGDIPAPI GdipGetPageUnit(GpGraphics *graphics, GpUnit *unit)
1879 {
1880 if(!graphics || !unit)
1881 return InvalidParameter;
1882
1883 *unit = graphics->unit;
1884
1885 return Ok;
1886 }
1887
1888 /* FIXME: Pixel offset mode is not used anywhere except the getter/setter. */
1889 GpStatus WINGDIPAPI GdipGetPixelOffsetMode(GpGraphics *graphics, PixelOffsetMode
1890 *mode)
1891 {
1892 if(!graphics || !mode)
1893 return InvalidParameter;
1894
1895 *mode = graphics->pixeloffset;
1896
1897 return Ok;
1898 }
1899
1900 /* FIXME: Smoothing mode is not used anywhere except the getter/setter. */
1901 GpStatus WINGDIPAPI GdipGetSmoothingMode(GpGraphics *graphics, SmoothingMode *mode)
1902 {
1903 if(!graphics || !mode)
1904 return InvalidParameter;
1905
1906 *mode = graphics->smoothing;
1907
1908 return Ok;
1909 }
1910
1911 /* FIXME: Text rendering hint is not used anywhere except the getter/setter. */
1912 GpStatus WINGDIPAPI GdipGetTextRenderingHint(GpGraphics *graphics,
1913 TextRenderingHint *hint)
1914 {
1915 if(!graphics || !hint)
1916 return InvalidParameter;
1917
1918 *hint = graphics->texthint;
1919
1920 return Ok;
1921 }
1922
1923 GpStatus WINGDIPAPI GdipGetWorldTransform(GpGraphics *graphics, GpMatrix *matrix)
1924 {
1925 if(!graphics || !matrix)
1926 return InvalidParameter;
1927
1928 *matrix = *graphics->worldtrans;
1929 return Ok;
1930 }
1931
1932 /* Find the smallest rectangle that bounds the text when it is printed in rect
1933 * according to the format options listed in format. If rect has 0 width and
1934 * height, then just find the smallest rectangle that bounds the text when it's
1935 * printed at location (rect->X, rect-Y). */
1936 GpStatus WINGDIPAPI GdipMeasureString(GpGraphics *graphics,
1937 GDIPCONST WCHAR *string, INT length, GDIPCONST GpFont *font,
1938 GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format, RectF *bounds,
1939 INT *codepointsfitted, INT *linesfilled)
1940 {
1941 HFONT oldfont;
1942 WCHAR* stringdup;
1943 INT sum = 0, height = 0, fit, fitcpy, max_width = 0, i, j, lret, nwidth,
1944 nheight;
1945 SIZE size;
1946
1947 if(!graphics || !string || !font || !rect)
1948 return InvalidParameter;
1949
1950 if(codepointsfitted || linesfilled){
1951 FIXME("not implemented for given parameters\n");
1952 return NotImplemented;
1953 }
1954
1955 if(format)
1956 TRACE("may be ignoring some format flags: attr %x\n", format->attr);
1957
1958 if(length == -1) length = lstrlenW(string);
1959
1960 stringdup = GdipAlloc(length * sizeof(WCHAR));
1961 if(!stringdup) return OutOfMemory;
1962
1963 oldfont = SelectObject(graphics->hdc, CreateFontIndirectW(&font->lfw));
1964 nwidth = roundr(rect->Width);
1965 nheight = roundr(rect->Height);
1966
1967 if((nwidth == 0) && (nheight == 0))
1968 nwidth = nheight = INT_MAX;
1969
1970 for(i = 0, j = 0; i < length; i++){
1971 if(!isprintW(string[i]) && (string[i] != '\n'))
1972 continue;
1973
1974 stringdup[j] = string[i];
1975 j++;
1976 }
1977
1978 stringdup[j] = 0;
1979 length = j;
1980
1981 while(sum < length){
1982 GetTextExtentExPointW(graphics->hdc, stringdup + sum, length - sum,
1983 nwidth, &fit, NULL, &size);
1984 fitcpy = fit;
1985
1986 if(fit == 0)
1987 break;
1988
1989 for(lret = 0; lret < fit; lret++)
1990 if(*(stringdup + sum + lret) == '\n')
1991 break;
1992
1993 /* Line break code (may look strange, but it imitates windows). */
1994 if(lret < fit)
1995 fit = lret; /* this is not an off-by-one error */
1996 else if(fit < (length - sum)){
1997 if(*(stringdup + sum + fit) == ' ')
1998 while(*(stringdup + sum + fit) == ' ')
1999 fit++;
2000 else
2001 while(*(stringdup + sum + fit - 1) != ' '){
2002 fit--;
2003
2004 if(*(stringdup + sum + fit) == '\t')
2005 break;
2006
2007 if(fit == 0){
2008 fit = fitcpy;
2009 break;
2010 }
2011 }
2012 }
2013
2014 GetTextExtentExPointW(graphics->hdc, stringdup + sum, fit,
2015 nwidth, &j, NULL, &size);
2016
2017 sum += fit + (lret < fitcpy ? 1 : 0);
2018 height += size.cy;
2019 max_width = max(max_width, size.cx);
2020
2021 if(height > nheight)
2022 break;
2023
2024 /* Stop if this was a linewrap (but not if it was a linebreak). */
2025 if((lret == fitcpy) && format && (format->attr & StringFormatFlagsNoWrap))
2026 break;
2027 }
2028
2029 bounds->X = rect->X;
2030 bounds->Y = rect->Y;
2031 bounds->Width = (REAL)max_width;
2032 bounds->Height = (REAL) min(height, nheight);
2033
2034 GdipFree(stringdup);
2035 DeleteObject(SelectObject(graphics->hdc, oldfont));
2036
2037 return Ok;
2038 }
2039
2040 GpStatus WINGDIPAPI GdipRestoreGraphics(GpGraphics *graphics, GraphicsState state)
2041 {
2042 static int calls;
2043
2044 if(!graphics)
2045 return InvalidParameter;
2046
2047 if(!(calls++))
2048 FIXME("graphics state not implemented\n");
2049
2050 return NotImplemented;
2051 }
2052
2053 GpStatus WINGDIPAPI GdipRotateWorldTransform(GpGraphics *graphics, REAL angle,
2054 GpMatrixOrder order)
2055 {
2056 if(!graphics)
2057 return InvalidParameter;
2058
2059 return GdipRotateMatrix(graphics->worldtrans, angle, order);
2060 }
2061
2062 GpStatus WINGDIPAPI GdipSaveGraphics(GpGraphics *graphics, GraphicsState *state)
2063 {
2064 static int calls;
2065
2066 if(!graphics || !state)
2067 return InvalidParameter;
2068
2069 if(!(calls++))
2070 FIXME("graphics state not implemented\n");
2071
2072 return NotImplemented;
2073 }
2074
2075 GpStatus WINGDIPAPI GdipScaleWorldTransform(GpGraphics *graphics, REAL sx,
2076 REAL sy, GpMatrixOrder order)
2077 {
2078 if(!graphics)
2079 return InvalidParameter;
2080
2081 return GdipScaleMatrix(graphics->worldtrans, sx, sy, order);
2082 }
2083
2084 GpStatus WINGDIPAPI GdipSetCompositingMode(GpGraphics *graphics,
2085 CompositingMode mode)
2086 {
2087 if(!graphics)
2088 return InvalidParameter;
2089
2090 graphics->compmode = mode;
2091
2092 return Ok;
2093 }
2094
2095 GpStatus WINGDIPAPI GdipSetCompositingQuality(GpGraphics *graphics,
2096 CompositingQuality quality)
2097 {
2098 if(!graphics)
2099 return InvalidParameter;
2100
2101 graphics->compqual = quality;
2102
2103 return Ok;
2104 }
2105
2106 GpStatus WINGDIPAPI GdipSetInterpolationMode(GpGraphics *graphics,
2107 InterpolationMode mode)
2108 {
2109 if(!graphics)
2110 return InvalidParameter;
2111
2112 graphics->interpolation = mode;
2113
2114 return Ok;
2115 }
2116
2117 GpStatus WINGDIPAPI GdipSetPageScale(GpGraphics *graphics, REAL scale)
2118 {
2119 if(!graphics || (scale <= 0.0))
2120 return InvalidParameter;
2121
2122 graphics->scale = scale;
2123
2124 return Ok;
2125 }
2126
2127 GpStatus WINGDIPAPI GdipSetPageUnit(GpGraphics *graphics, GpUnit unit)
2128 {
2129 if(!graphics || (unit == UnitWorld))
2130 return InvalidParameter;
2131
2132 graphics->unit = unit;
2133
2134 return Ok;
2135 }
2136
2137 GpStatus WINGDIPAPI GdipSetPixelOffsetMode(GpGraphics *graphics, PixelOffsetMode
2138 mode)
2139 {
2140 if(!graphics)
2141 return InvalidParameter;
2142
2143 graphics->pixeloffset = mode;
2144
2145 return Ok;
2146 }
2147
2148 GpStatus WINGDIPAPI GdipSetSmoothingMode(GpGraphics *graphics, SmoothingMode mode)
2149 {
2150 if(!graphics)
2151 return InvalidParameter;
2152
2153 graphics->smoothing = mode;
2154
2155 return Ok;
2156 }
2157
2158 GpStatus WINGDIPAPI GdipSetTextRenderingHint(GpGraphics *graphics,
2159 TextRenderingHint hint)
2160 {
2161 if(!graphics)
2162 return InvalidParameter;
2163
2164 graphics->texthint = hint;
2165
2166 return Ok;
2167 }
2168
2169 GpStatus WINGDIPAPI GdipSetWorldTransform(GpGraphics *graphics, GpMatrix *matrix)
2170 {
2171 if(!graphics || !matrix)
2172 return InvalidParameter;
2173
2174 GdipDeleteMatrix(graphics->worldtrans);
2175 return GdipCloneMatrix(matrix, &graphics->worldtrans);
2176 }
2177
2178 GpStatus WINGDIPAPI GdipTranslateWorldTransform(GpGraphics *graphics, REAL dx,
2179 REAL dy, GpMatrixOrder order)
2180 {
2181 if(!graphics)
2182 return InvalidParameter;
2183
2184 return GdipTranslateMatrix(graphics->worldtrans, dx, dy, order);
2185 }
2186
2187 GpStatus WINGDIPAPI GdipSetClipRectI(GpGraphics *graphics, INT x, INT y,
2188 INT width, INT height,
2189 CombineMode combineMode)
2190 {
2191 static int calls;
2192
2193 if(!(calls++))
2194 FIXME("not implemented\n");
2195
2196 return NotImplemented;
2197 }
2198
2199 GpStatus WINGDIPAPI GdipSetClipRegion(GpGraphics *graphics, GpRegion *region,
2200 CombineMode combineMode)
2201 {
2202 static int calls;
2203
2204 if(!(calls++))
2205 FIXME("not implemented\n");
2206
2207 return NotImplemented;
2208 }
2209
2210 GpStatus WINGDIPAPI GdipSetMetafileDownLevelRasterizationLimit(GpGraphics *graphics,
2211 UINT limitDpi)
2212 {
2213 static int calls;
2214
2215 if(!(calls++))
2216 FIXME("not implemented\n");
2217
2218 return NotImplemented;
2219 }
2220
2221 GpStatus WINGDIPAPI GdipDrawPolygon(GpGraphics *graphics,GpPen *pen,GDIPCONST GpPointF *points,
2222 INT count)
2223 {
2224 INT save_state;
2225 POINT *pti;
2226
2227 if(!graphics || !pen || count<=0)
2228 return InvalidParameter;
2229
2230 pti = GdipAlloc(sizeof(POINT) * count);
2231
2232 save_state = prepare_dc(graphics, pen);
2233 SelectObject(graphics->hdc, GetStockObject(NULL_BRUSH));
2234
2235 transform_and_round_points(graphics, pti, (GpPointF*)points, count);
2236 Polygon(graphics->hdc, pti, count);
2237
2238 restore_dc(graphics, save_state);
2239 GdipFree(pti);
2240
2241 return Ok;
2242 }
2243
2244 GpStatus WINGDIPAPI GdipDrawPolygonI(GpGraphics *graphics,GpPen *pen,GDIPCONST GpPoint *points,
2245 INT count)
2246 {
2247 GpStatus ret;
2248 GpPointF *ptf;
2249 INT i;
2250
2251 if(count<=0) return InvalidParameter;
2252 ptf = GdipAlloc(sizeof(GpPointF) * count);
2253
2254 for(i = 0;i < count; i++){
2255 ptf[i].X = (REAL)points[i].X;
2256 ptf[i].Y = (REAL)points[i].Y;
2257 }
2258
2259 ret = GdipDrawPolygon(graphics,pen,ptf,count);
2260 GdipFree(ptf);
2261
2262 return ret;
2263 }
Windows API implementation