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Release 980628
[wine/gsoc-2012-control.git] / objects / dc.c
blob20243c3b5ce83ecd2c04988790355c73555fa262
1 /*
2 * GDI Device Context functions
3 *
4 * Copyright 1993 Alexandre Julliard
5 *
6 */
7
8 #include <stdlib.h>
9 #include <string.h>
10 #include "dc.h"
11 #include "gdi.h"
12 #include "heap.h"
13 #include "metafile.h"
14 #include "color.h"
15 #include "debug.h"
16 #include "font.h"
17 #include "winerror.h"
18 #include "x11font.h"
19
20 /* ROP code to GC function conversion */
21 const int DC_XROPfunction[16] =
22 {
23 GXclear, /* R2_BLACK */
24 GXnor, /* R2_NOTMERGEPEN */
25 GXandInverted, /* R2_MASKNOTPEN */
26 GXcopyInverted, /* R2_NOTCOPYPEN */
27 GXandReverse, /* R2_MASKPENNOT */
28 GXinvert, /* R2_NOT */
29 GXxor, /* R2_XORPEN */
30 GXnand, /* R2_NOTMASKPEN */
31 GXand, /* R2_MASKPEN */
32 GXequiv, /* R2_NOTXORPEN */
33 GXnoop, /* R2_NOP */
34 GXorInverted, /* R2_MERGENOTPEN */
35 GXcopy, /* R2_COPYPEN */
36 GXorReverse, /* R2_MERGEPENNOT */
37 GXor, /* R2_MERGEPEN */
38 GXset /* R2_WHITE */
39 };
40
41
42 /***********************************************************************
43 * DC_FillDevCaps
44 *
45 * Fill the device caps structure.
46 */
47 void DC_FillDevCaps( DeviceCaps * caps )
48 {
49 caps->version = 0x300;
50 caps->technology = DT_RASDISPLAY;
51 caps->horzSize = WidthMMOfScreen(screen) * screenWidth / WidthOfScreen(screen);
52 caps->vertSize = HeightMMOfScreen(screen) * screenHeight / HeightOfScreen(screen);
53 caps->horzRes = screenWidth;
54 caps->vertRes = screenHeight;
55 caps->bitsPixel = screenDepth;
56 caps->planes = 1;
57 caps->numBrushes = 16+6; /* 16 solid + 6 hatched brushes */
58 caps->numPens = 16; /* 16 solid pens */
59 caps->numMarkers = 0;
60 caps->numFonts = 0;
61 caps->numColors = 100;
62 caps->pdeviceSize = 0;
63 caps->curveCaps = CC_CIRCLES | CC_PIE | CC_CHORD | CC_ELLIPSES |
64 CC_WIDE | CC_STYLED | CC_WIDESTYLED |
65 CC_INTERIORS | CC_ROUNDRECT;
66 caps->lineCaps = LC_POLYLINE | LC_MARKER | LC_POLYMARKER | LC_WIDE |
67 LC_STYLED | LC_WIDESTYLED | LC_INTERIORS;
68 caps->polygonalCaps = PC_POLYGON | PC_RECTANGLE | PC_WINDPOLYGON |
69 PC_SCANLINE | PC_WIDE | PC_STYLED |
70 PC_WIDESTYLED | PC_INTERIORS;
71 caps->textCaps = TC_OP_CHARACTER | TC_OP_STROKE | TC_CP_STROKE |
72 TC_IA_ABLE | TC_UA_ABLE | TC_SO_ABLE | TC_RA_ABLE;
73 caps->clipCaps = CP_REGION;
74 caps->rasterCaps = RC_BITBLT | RC_BANDING | RC_SCALING | RC_BITMAP64 |
75 RC_DI_BITMAP | RC_DIBTODEV | RC_BIGFONT|
76 RC_STRETCHBLT | RC_STRETCHDIB | RC_DEVBITS;
77
78 if( !(COLOR_GetSystemPaletteFlags() & COLOR_VIRTUAL) )
79 caps->rasterCaps |= RC_PALETTE;
80
81 caps->aspectX = 36; /* ?? */
82 caps->aspectY = 36; /* ?? */
83 caps->aspectXY = 51;
84 caps->logPixelsX = (int)(caps->horzRes * 25.4 / caps->horzSize);
85 caps->logPixelsY = (int)(caps->vertRes * 25.4 / caps->vertSize);
86 caps->sizePalette = (caps->rasterCaps & RC_PALETTE)
87 ? DefaultVisual(display,DefaultScreen(display))->map_entries
88 : 0;
89 caps->numReserved = 0;
90 caps->colorRes = 0;
91 }
92
93
94 /***********************************************************************
95 * DC_Init_DC_INFO
96 *
97 * Fill the WIN_DC_INFO structure.
98 */
99 static void DC_Init_DC_INFO( WIN_DC_INFO *win_dc_info )
100 {
101 win_dc_info->flags = 0;
102 win_dc_info->devCaps = NULL;
103 win_dc_info->hClipRgn = 0;
104 win_dc_info->hVisRgn = 0;
105 win_dc_info->hGCClipRgn = 0;
106 win_dc_info->hPen = STOCK_BLACK_PEN;
107 win_dc_info->hBrush = STOCK_WHITE_BRUSH;
108 win_dc_info->hFont = STOCK_SYSTEM_FONT;
109 win_dc_info->hBitmap = 0;
110 win_dc_info->hFirstBitmap = 0;
111 win_dc_info->hDevice = 0;
112 win_dc_info->hPalette = STOCK_DEFAULT_PALETTE;
113 win_dc_info->ROPmode = R2_COPYPEN;
114 win_dc_info->polyFillMode = ALTERNATE;
115 win_dc_info->stretchBltMode = BLACKONWHITE;
116 win_dc_info->relAbsMode = ABSOLUTE;
117 win_dc_info->backgroundMode = OPAQUE;
118 win_dc_info->backgroundColor = RGB( 255, 255, 255 );
119 win_dc_info->textColor = RGB( 0, 0, 0 );
120 win_dc_info->backgroundPixel = 0;
121 win_dc_info->textPixel = 0;
122 win_dc_info->brushOrgX = 0;
123 win_dc_info->brushOrgY = 0;
124 win_dc_info->textAlign = TA_LEFT | TA_TOP | TA_NOUPDATECP;
125 win_dc_info->charExtra = 0;
126 win_dc_info->breakTotalExtra = 0;
127 win_dc_info->breakCount = 0;
128 win_dc_info->breakExtra = 0;
129 win_dc_info->breakRem = 0;
130 win_dc_info->bitsPerPixel = 1;
131 win_dc_info->MapMode = MM_TEXT;
132 win_dc_info->GraphicsMode = GM_COMPATIBLE;
133 win_dc_info->DCOrgX = 0;
134 win_dc_info->DCOrgY = 0;
135 win_dc_info->lpfnPrint = NULL;
136 win_dc_info->CursPosX = 0;
137 win_dc_info->CursPosY = 0;
138 win_dc_info->ArcDirection = AD_COUNTERCLOCKWISE;
139 win_dc_info->xformWorld2Wnd.eM11 = 1.0f;
140 win_dc_info->xformWorld2Wnd.eM12 = 0.0f;
141 win_dc_info->xformWorld2Wnd.eM21 = 0.0f;
142 win_dc_info->xformWorld2Wnd.eM22 = 1.0f;
143 win_dc_info->xformWorld2Wnd.eDx = 0.0f;
144 win_dc_info->xformWorld2Wnd.eDy = 0.0f;
145 win_dc_info->xformWorld2Vport = win_dc_info->xformWorld2Wnd;
146 win_dc_info->xformVport2World = win_dc_info->xformWorld2Wnd;
147 win_dc_info->vport2WorldValid = TRUE;
148
149 PATH_InitGdiPath(&win_dc_info->path);
150 }
151
152
153 /***********************************************************************
154 * DC_AllocDC
155 */
156 DC *DC_AllocDC( const DC_FUNCTIONS *funcs )
157 {
158 HDC16 hdc;
159 DC *dc;
160
161 if (!(hdc = GDI_AllocObject( sizeof(DC), DC_MAGIC ))) return NULL;
162 dc = (DC *) GDI_HEAP_LOCK( hdc );
163
164 dc->hSelf = hdc;
165 dc->funcs = funcs;
166 dc->physDev = NULL;
167 dc->saveLevel = 0;
168 dc->dwHookData = 0L;
169 dc->hookProc = NULL;
170 dc->wndOrgX = 0;
171 dc->wndOrgY = 0;
172 dc->wndExtX = 1;
173 dc->wndExtY = 1;
174 dc->vportOrgX = 0;
175 dc->vportOrgY = 0;
176 dc->vportExtX = 1;
177 dc->vportExtY = 1;
178
179 DC_Init_DC_INFO( &dc->w );
180
181 return dc;
182 }
183
184
185
186 /***********************************************************************
187 * DC_GetDCPtr
188 */
189 DC *DC_GetDCPtr( HDC32 hdc )
190 {
191 GDIOBJHDR *ptr = (GDIOBJHDR *)GDI_HEAP_LOCK( hdc );
192 if (!ptr) return NULL;
193 if ((ptr->wMagic == DC_MAGIC) || (ptr->wMagic == METAFILE_DC_MAGIC))
194 return (DC *)ptr;
195 GDI_HEAP_UNLOCK( hdc );
196 return NULL;
197 }
198
199
200 /***********************************************************************
201 * DC_InitDC
202 *
203 * Setup device-specific DC values for a newly created DC.
204 */
205 void DC_InitDC( DC* dc )
206 {
207 RealizeDefaultPalette( dc->hSelf );
208 SetTextColor32( dc->hSelf, dc->w.textColor );
209 SetBkColor32( dc->hSelf, dc->w.backgroundColor );
210 SelectObject32( dc->hSelf, dc->w.hPen );
211 SelectObject32( dc->hSelf, dc->w.hBrush );
212 SelectObject32( dc->hSelf, dc->w.hFont );
213 CLIPPING_UpdateGCRegion( dc );
214 }
215
216
217 /***********************************************************************
218 * DC_SetupGCForPatBlt
219 *
220 * Setup the GC for a PatBlt operation using current brush.
221 * If fMapColors is TRUE, X pixels are mapped to Windows colors.
222 * Return FALSE if brush is BS_NULL, TRUE otherwise.
223 */
224 BOOL32 DC_SetupGCForPatBlt( DC * dc, GC gc, BOOL32 fMapColors )
225 {
226 XGCValues val;
227 unsigned long mask;
228 Pixmap pixmap = 0;
229
230 if (dc->u.x.brush.style == BS_NULL) return FALSE;
231 if (dc->u.x.brush.pixel == -1)
232 {
233 /* Special case used for monochrome pattern brushes.
234 * We need to swap foreground and background because
235 * Windows does it the wrong way...
236 */
237 val.foreground = dc->w.backgroundPixel;
238 val.background = dc->w.textPixel;
239 }
240 else
241 {
242 val.foreground = dc->u.x.brush.pixel;
243 val.background = dc->w.backgroundPixel;
244 }
245 if (fMapColors && COLOR_PixelToPalette)
246 {
247 val.foreground = COLOR_PixelToPalette[val.foreground];
248 val.background = COLOR_PixelToPalette[val.background];
249 }
250
251 if (dc->w.flags & DC_DIRTY) CLIPPING_UpdateGCRegion(dc);
252
253 val.function = DC_XROPfunction[dc->w.ROPmode-1];
254 /*
255 ** Let's replace GXinvert by GXxor with (black xor white)
256 ** This solves the selection color and leak problems in excel
257 ** FIXME : Let's do that only if we work with X-pixels, not with Win-pixels
258 */
259 if (val.function == GXinvert)
260 {
261 val.foreground = BlackPixelOfScreen(screen) ^ WhitePixelOfScreen(screen);
262 val.function = GXxor;
263 }
264 val.fill_style = dc->u.x.brush.fillStyle;
265 switch(val.fill_style)
266 {
267 case FillStippled:
268 case FillOpaqueStippled:
269 if (dc->w.backgroundMode==OPAQUE) val.fill_style = FillOpaqueStippled;
270 val.stipple = dc->u.x.brush.pixmap;
271 mask = GCStipple;
272 break;
273
274 case FillTiled:
275 if (fMapColors && COLOR_PixelToPalette)
276 {
277 register int x, y;
278 XImage *image;
279 EnterCriticalSection( &X11DRV_CritSection );
280 pixmap = XCreatePixmap( display, rootWindow, 8, 8, screenDepth );
281 image = XGetImage( display, dc->u.x.brush.pixmap, 0, 0, 8, 8,
282 AllPlanes, ZPixmap );
283 for (y = 0; y < 8; y++)
284 for (x = 0; x < 8; x++)
285 XPutPixel( image, x, y,
286 COLOR_PixelToPalette[XGetPixel( image, x, y)] );
287 XPutImage( display, pixmap, gc, image, 0, 0, 0, 0, 8, 8 );
288 XDestroyImage( image );
289 LeaveCriticalSection( &X11DRV_CritSection );
290 val.tile = pixmap;
291 }
292 else val.tile = dc->u.x.brush.pixmap;
293 mask = GCTile;
294 break;
295
296 default:
297 mask = 0;
298 break;
299 }
300 val.ts_x_origin = dc->w.DCOrgX + dc->w.brushOrgX;
301 val.ts_y_origin = dc->w.DCOrgY + dc->w.brushOrgY;
302 val.fill_rule = (dc->w.polyFillMode==WINDING) ? WindingRule : EvenOddRule;
303 TSXChangeGC( display, gc,
304 GCFunction | GCForeground | GCBackground | GCFillStyle |
305 GCFillRule | GCTileStipXOrigin | GCTileStipYOrigin | mask,
306 &val );
307 if (pixmap) TSXFreePixmap( display, pixmap );
308 return TRUE;
309 }
310
311
312 /***********************************************************************
313 * DC_SetupGCForBrush
314 *
315 * Setup dc->u.x.gc for drawing operations using current brush.
316 * Return FALSE if brush is BS_NULL, TRUE otherwise.
317 */
318 BOOL32 DC_SetupGCForBrush( DC * dc )
319 {
320 return DC_SetupGCForPatBlt( dc, dc->u.x.gc, FALSE );
321 }
322
323
324 /***********************************************************************
325 * DC_SetupGCForPen
326 *
327 * Setup dc->u.x.gc for drawing operations using current pen.
328 * Return FALSE if pen is PS_NULL, TRUE otherwise.
329 */
330 BOOL32 DC_SetupGCForPen( DC * dc )
331 {
332 XGCValues val;
333
334 if (dc->u.x.pen.style == PS_NULL) return FALSE;
335
336 if (dc->w.flags & DC_DIRTY) CLIPPING_UpdateGCRegion(dc);
337
338 switch (dc->w.ROPmode)
339 {
340 case R2_BLACK :
341 val.foreground = BlackPixelOfScreen( screen );
342 val.function = GXcopy;
343 break;
344 case R2_WHITE :
345 val.foreground = WhitePixelOfScreen( screen );
346 val.function = GXcopy;
347 break;
348 case R2_XORPEN :
349 val.foreground = dc->u.x.pen.pixel;
350 /* It is very unlikely someone wants to XOR with 0 */
351 /* This fixes the rubber-drawings in paintbrush */
352 if (val.foreground == 0)
353 val.foreground = BlackPixelOfScreen( screen )
354 ^ WhitePixelOfScreen( screen );
355 val.function = GXxor;
356 break;
357 default :
358 val.foreground = dc->u.x.pen.pixel;
359 val.function = DC_XROPfunction[dc->w.ROPmode-1];
360 }
361 val.background = dc->w.backgroundPixel;
362 val.fill_style = FillSolid;
363 if ((dc->u.x.pen.style!=PS_SOLID) && (dc->u.x.pen.style!=PS_INSIDEFRAME))
364 {
365 TSXSetDashes( display, dc->u.x.gc, 0,
366 dc->u.x.pen.dashes, dc->u.x.pen.dash_len );
367 val.line_style = (dc->w.backgroundMode == OPAQUE) ?
368 LineDoubleDash : LineOnOffDash;
369 }
370 else val.line_style = LineSolid;
371 val.line_width = dc->u.x.pen.width;
372 if (val.line_width <= 1) {
373 val.cap_style = CapNotLast;
374 } else {
375 switch (dc->u.x.pen.endcap)
376 {
377 case PS_ENDCAP_SQUARE:
378 val.cap_style = CapProjecting;
379 break;
380 case PS_ENDCAP_FLAT:
381 val.cap_style = CapButt;
382 break;
383 case PS_ENDCAP_ROUND:
384 default:
385 val.cap_style = CapRound;
386 }
387 }
388 switch (dc->u.x.pen.linejoin)
389 {
390 case PS_JOIN_BEVEL:
391 val.join_style = JoinBevel;
392 break;
393 case PS_JOIN_MITER:
394 val.join_style = JoinMiter;
395 break;
396 case PS_JOIN_ROUND:
397 default:
398 val.join_style = JoinRound;
399 }
400 TSXChangeGC( display, dc->u.x.gc,
401 GCFunction | GCForeground | GCBackground | GCLineWidth |
402 GCLineStyle | GCCapStyle | GCJoinStyle | GCFillStyle, &val );
403 return TRUE;
404 }
405
406
407 /***********************************************************************
408 * DC_SetupGCForText
409 *
410 * Setup dc->u.x.gc for text drawing operations.
411 * Return FALSE if the font is null, TRUE otherwise.
412 */
413 BOOL32 DC_SetupGCForText( DC * dc )
414 {
415 XFontStruct* xfs = XFONT_GetFontStruct( dc->u.x.font );
416
417 if( xfs )
418 {
419 XGCValues val;
420
421 if (dc->w.flags & DC_DIRTY) CLIPPING_UpdateGCRegion(dc);
422
423 val.function = GXcopy; /* Text is always GXcopy */
424 val.foreground = dc->w.textPixel;
425 val.background = dc->w.backgroundPixel;
426 val.fill_style = FillSolid;
427 val.font = xfs->fid;
428
429 TSXChangeGC( display, dc->u.x.gc,
430 GCFunction | GCForeground | GCBackground | GCFillStyle |
431 GCFont, &val );
432 return TRUE;
433 }
434 WARN(dc, "Physical font failure\n" );
435 return FALSE;
436 }
437
438
439 /***********************************************************************
440 * DC_InvertXform
441 *
442 * Computes the inverse of the transformation xformSrc and stores it to
443 * xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
444 * is singular.
445 */
446 static BOOL32 DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
447 {
448 FLOAT determinant;
449
450 determinant = xformSrc->eM11*xformSrc->eM22 -
451 xformSrc->eM12*xformSrc->eM21;
452 if (determinant > -1e-12 && determinant < 1e-12)
453 return FALSE;
454
455 xformDest->eM11 = xformSrc->eM22 / determinant;
456 xformDest->eM12 = -xformSrc->eM12 / determinant;
457 xformDest->eM21 = -xformSrc->eM21 / determinant;
458 xformDest->eM22 = xformSrc->eM11 / determinant;
459 xformDest->eDx = -xformSrc->eDx * xformDest->eM11 -
460 xformSrc->eDy * xformDest->eM21;
461 xformDest->eDy = -xformSrc->eDx * xformDest->eM12 -
462 xformSrc->eDy * xformDest->eM22;
463
464 return TRUE;
465 }
466
467
468 /***********************************************************************
469 * DC_UpdateXforms
470 *
471 * Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
472 * fields of the specified DC by creating a transformation that
473 * represents the current mapping mode and combining it with the DC's
474 * world transform. This function should be called whenever the
475 * parameters associated with the mapping mode (window and viewport
476 * extents and origins) or the world transform change.
477 */
478 void DC_UpdateXforms( DC *dc )
479 {
480 XFORM xformWnd2Vport;
481 FLOAT scaleX, scaleY;
482
483 /* Construct a transformation to do the window-to-viewport conversion */
484 scaleX = (FLOAT)dc->vportExtX / (FLOAT)dc->wndExtX;
485 scaleY = (FLOAT)dc->vportExtY / (FLOAT)dc->wndExtY;
486 xformWnd2Vport.eM11 = scaleX;
487 xformWnd2Vport.eM12 = 0.0;
488 xformWnd2Vport.eM21 = 0.0;
489 xformWnd2Vport.eM22 = scaleY;
490 xformWnd2Vport.eDx = (FLOAT)dc->vportOrgX -
491 scaleX * (FLOAT)dc->wndOrgX;
492 xformWnd2Vport.eDy = (FLOAT)dc->vportOrgY -
493 scaleY * (FLOAT)dc->wndOrgY;
494
495 /* Combine with the world transformation */
496 CombineTransform( &dc->w.xformWorld2Vport, &dc->w.xformWorld2Wnd,
497 &xformWnd2Vport );
498
499 /* Create inverse of world-to-viewport transformation */
500 dc->w.vport2WorldValid = DC_InvertXform( &dc->w.xformWorld2Vport,
501 &dc->w.xformVport2World );
502 }
503
504
505 /***********************************************************************
506 * GetDCState (GDI.179)
507 */
508 HDC16 WINAPI GetDCState( HDC16 hdc )
509 {
510 DC * newdc, * dc;
511 HGDIOBJ16 handle;
512
513 if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return 0;
514 if (!(handle = GDI_AllocObject( sizeof(DC), DC_MAGIC )))
515 {
516 GDI_HEAP_UNLOCK( hdc );
517 return 0;
518 }
519 newdc = (DC *) GDI_HEAP_LOCK( handle );
520
521 TRACE(dc, "(%04x): returning %04x\n", hdc, handle );
522
523 memset( &newdc->u.x, 0, sizeof(newdc->u.x) );
524 newdc->w.flags = dc->w.flags | DC_SAVED;
525 newdc->w.devCaps = dc->w.devCaps;
526 newdc->w.hPen = dc->w.hPen;
527 newdc->w.hBrush = dc->w.hBrush;
528 newdc->w.hFont = dc->w.hFont;
529 newdc->w.hBitmap = dc->w.hBitmap;
530 newdc->w.hFirstBitmap = dc->w.hFirstBitmap;
531 newdc->w.hDevice = dc->w.hDevice;
532 newdc->w.hPalette = dc->w.hPalette;
533 newdc->w.bitsPerPixel = dc->w.bitsPerPixel;
534 newdc->w.ROPmode = dc->w.ROPmode;
535 newdc->w.polyFillMode = dc->w.polyFillMode;
536 newdc->w.stretchBltMode = dc->w.stretchBltMode;
537 newdc->w.relAbsMode = dc->w.relAbsMode;
538 newdc->w.backgroundMode = dc->w.backgroundMode;
539 newdc->w.backgroundColor = dc->w.backgroundColor;
540 newdc->w.textColor = dc->w.textColor;
541 newdc->w.backgroundPixel = dc->w.backgroundPixel;
542 newdc->w.textPixel = dc->w.textPixel;
543 newdc->w.brushOrgX = dc->w.brushOrgX;
544 newdc->w.brushOrgY = dc->w.brushOrgY;
545 newdc->w.textAlign = dc->w.textAlign;
546 newdc->w.charExtra = dc->w.charExtra;
547 newdc->w.breakTotalExtra = dc->w.breakTotalExtra;
548 newdc->w.breakCount = dc->w.breakCount;
549 newdc->w.breakExtra = dc->w.breakExtra;
550 newdc->w.breakRem = dc->w.breakRem;
551 newdc->w.MapMode = dc->w.MapMode;
552 newdc->w.GraphicsMode = dc->w.GraphicsMode;
553 newdc->w.DCOrgX = dc->w.DCOrgX;
554 newdc->w.DCOrgY = dc->w.DCOrgY;
555 newdc->w.CursPosX = dc->w.CursPosX;
556 newdc->w.CursPosY = dc->w.CursPosY;
557 newdc->w.ArcDirection = dc->w.ArcDirection;
558 newdc->w.xformWorld2Wnd = dc->w.xformWorld2Wnd;
559 newdc->w.xformWorld2Vport = dc->w.xformWorld2Vport;
560 newdc->w.xformVport2World = dc->w.xformVport2World;
561 newdc->w.vport2WorldValid = dc->w.vport2WorldValid;
562 newdc->wndOrgX = dc->wndOrgX;
563 newdc->wndOrgY = dc->wndOrgY;
564 newdc->wndExtX = dc->wndExtX;
565 newdc->wndExtY = dc->wndExtY;
566 newdc->vportOrgX = dc->vportOrgX;
567 newdc->vportOrgY = dc->vportOrgY;
568 newdc->vportExtX = dc->vportExtX;
569 newdc->vportExtY = dc->vportExtY;
570
571 newdc->hSelf = (HDC32)handle;
572 newdc->saveLevel = 0;
573
574 PATH_InitGdiPath( &newdc->w.path );
575
576 /* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
577
578 newdc->w.hGCClipRgn = newdc->w.hVisRgn = 0;
579 if (dc->w.hClipRgn)
580 {
581 newdc->w.hClipRgn = CreateRectRgn32( 0, 0, 0, 0 );
582 CombineRgn32( newdc->w.hClipRgn, dc->w.hClipRgn, 0, RGN_COPY );
583 }
584 else
585 newdc->w.hClipRgn = 0;
586 GDI_HEAP_UNLOCK( handle );
587 GDI_HEAP_UNLOCK( hdc );
588 return handle;
589 }
590
591
592 /***********************************************************************
593 * SetDCState (GDI.180)
594 */
595 void WINAPI SetDCState( HDC16 hdc, HDC16 hdcs )
596 {
597 DC *dc, *dcs;
598
599 if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return;
600 if (!(dcs = (DC *) GDI_GetObjPtr( hdcs, DC_MAGIC )))
601 {
602 GDI_HEAP_UNLOCK( hdc );
603 return;
604 }
605 if (!dcs->w.flags & DC_SAVED)
606 {
607 GDI_HEAP_UNLOCK( hdc );
608 GDI_HEAP_UNLOCK( hdcs );
609 return;
610 }
611 TRACE(dc, "%04x %04x\n", hdc, hdcs );
612
613 dc->w.flags = dcs->w.flags & ~DC_SAVED;
614 dc->w.devCaps = dcs->w.devCaps;
615 dc->w.hFirstBitmap = dcs->w.hFirstBitmap;
616 dc->w.hDevice = dcs->w.hDevice;
617 dc->w.ROPmode = dcs->w.ROPmode;
618 dc->w.polyFillMode = dcs->w.polyFillMode;
619 dc->w.stretchBltMode = dcs->w.stretchBltMode;
620 dc->w.relAbsMode = dcs->w.relAbsMode;
621 dc->w.backgroundMode = dcs->w.backgroundMode;
622 dc->w.backgroundColor = dcs->w.backgroundColor;
623 dc->w.textColor = dcs->w.textColor;
624 dc->w.backgroundPixel = dcs->w.backgroundPixel;
625 dc->w.textPixel = dcs->w.textPixel;
626 dc->w.brushOrgX = dcs->w.brushOrgX;
627 dc->w.brushOrgY = dcs->w.brushOrgY;
628 dc->w.textAlign = dcs->w.textAlign;
629 dc->w.charExtra = dcs->w.charExtra;
630 dc->w.breakTotalExtra = dcs->w.breakTotalExtra;
631 dc->w.breakCount = dcs->w.breakCount;
632 dc->w.breakExtra = dcs->w.breakExtra;
633 dc->w.breakRem = dcs->w.breakRem;
634 dc->w.MapMode = dcs->w.MapMode;
635 dc->w.GraphicsMode = dcs->w.GraphicsMode;
636 dc->w.DCOrgX = dcs->w.DCOrgX;
637 dc->w.DCOrgY = dcs->w.DCOrgY;
638 dc->w.CursPosX = dcs->w.CursPosX;
639 dc->w.CursPosY = dcs->w.CursPosY;
640 dc->w.ArcDirection = dcs->w.ArcDirection;
641 dc->w.xformWorld2Wnd = dcs->w.xformWorld2Wnd;
642 dc->w.xformWorld2Vport = dcs->w.xformWorld2Vport;
643 dc->w.xformVport2World = dcs->w.xformVport2World;
644 dc->w.vport2WorldValid = dcs->w.vport2WorldValid;
645
646 dc->wndOrgX = dcs->wndOrgX;
647 dc->wndOrgY = dcs->wndOrgY;
648 dc->wndExtX = dcs->wndExtX;
649 dc->wndExtY = dcs->wndExtY;
650 dc->vportOrgX = dcs->vportOrgX;
651 dc->vportOrgY = dcs->vportOrgY;
652 dc->vportExtX = dcs->vportExtX;
653 dc->vportExtY = dcs->vportExtY;
654
655 if (!(dc->w.flags & DC_MEMORY)) dc->w.bitsPerPixel = dcs->w.bitsPerPixel;
656 SelectClipRgn32( hdc, dcs->w.hClipRgn );
657
658 SelectObject32( hdc, dcs->w.hBitmap );
659 SelectObject32( hdc, dcs->w.hBrush );
660 SelectObject32( hdc, dcs->w.hFont );
661 SelectObject32( hdc, dcs->w.hPen );
662 GDISelectPalette( hdc, dcs->w.hPalette, FALSE );
663 GDI_HEAP_UNLOCK( hdc );
664 GDI_HEAP_UNLOCK( hdcs );
665 }
666
667
668 /***********************************************************************
669 * SaveDC16 (GDI.30)
670 */
671 INT16 WINAPI SaveDC16( HDC16 hdc )
672 {
673 return (INT16)SaveDC32( hdc );
674 }
675
676
677 /***********************************************************************
678 * SaveDC32 (GDI32.292)
679 */
680 INT32 WINAPI SaveDC32( HDC32 hdc )
681 {
682 HDC32 hdcs;
683 DC * dc, * dcs;
684 INT32 ret;
685
686 dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
687 if (!dc)
688 {
689 dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
690 if (!dc) return 0;
691 MF_MetaParam0(dc, META_SAVEDC);
692 GDI_HEAP_UNLOCK( hdc );
693 return 1; /* ?? */
694 }
695 if (!(hdcs = GetDCState( hdc )))
696 {
697 GDI_HEAP_UNLOCK( hdc );
698 return 0;
699 }
700 dcs = (DC *) GDI_HEAP_LOCK( hdcs );
701
702 /* Copy path. The reason why path saving / restoring is in SaveDC/
703 * RestoreDC and not in GetDCState/SetDCState is that the ...DCState
704 * functions are only in Win16 (which doesn't have paths) and that
705 * SetDCState doesn't allow us to signal an error (which can happen
706 * when copying paths).
707 */
708 if (!PATH_AssignGdiPath( &dcs->w.path, &dc->w.path ))
709 {
710 GDI_HEAP_UNLOCK( hdc );
711 GDI_HEAP_UNLOCK( hdcs );
712 DeleteDC32( hdcs );
713 return 0;
714 }
715
716 dcs->header.hNext = dc->header.hNext;
717 dc->header.hNext = hdcs;
718 TRACE(dc, "(%04x): returning %d\n", hdc, dc->saveLevel+1 );
719 ret = ++dc->saveLevel;
720 GDI_HEAP_UNLOCK( hdcs );
721 GDI_HEAP_UNLOCK( hdc );
722 return ret;
723 }
724
725
726 /***********************************************************************
727 * RestoreDC16 (GDI.39)
728 */
729 BOOL16 WINAPI RestoreDC16( HDC16 hdc, INT16 level )
730 {
731 return RestoreDC32( hdc, level );
732 }
733
734
735 /***********************************************************************
736 * RestoreDC32 (GDI32.290)
737 */
738 BOOL32 WINAPI RestoreDC32( HDC32 hdc, INT32 level )
739 {
740 DC * dc, * dcs;
741 BOOL32 success;
742
743 TRACE(dc, "%04x %d\n", hdc, level );
744 dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
745 if (!dc)
746 {
747 dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
748 if (!dc) return FALSE;
749 if (level != -1)
750 {
751 GDI_HEAP_UNLOCK( hdc );
752 return FALSE;
753 }
754 MF_MetaParam1(dc, META_RESTOREDC, level);
755 GDI_HEAP_UNLOCK( hdc );
756 return TRUE;
757 }
758 if (level == -1) level = dc->saveLevel;
759 if ((level < 1) || (level > dc->saveLevel))
760 {
761 GDI_HEAP_UNLOCK( hdc );
762 return FALSE;
763 }
764
765 success=TRUE;
766 while (dc->saveLevel >= level)
767 {
768 HDC16 hdcs = dc->header.hNext;
769 if (!(dcs = (DC *) GDI_GetObjPtr( hdcs, DC_MAGIC )))
770 {
771 GDI_HEAP_UNLOCK( hdc );
772 return FALSE;
773 }
774 dc->header.hNext = dcs->header.hNext;
775 if (--dc->saveLevel < level)
776 {
777 SetDCState( hdc, hdcs );
778 if (!PATH_AssignGdiPath( &dc->w.path, &dcs->w.path ))
779 /* FIXME: This might not be quite right, since we're
780 * returning FALSE but still destroying the saved DC state */
781 success=FALSE;
782 }
783 DeleteDC32( hdcs );
784 }
785 GDI_HEAP_UNLOCK( hdc );
786 return success;
787 }
788
789
790 /***********************************************************************
791 * CreateDC16 (GDI.53)
792 */
793 HDC16 WINAPI CreateDC16( LPCSTR driver, LPCSTR device, LPCSTR output,
794 const DEVMODE16 *initData )
795 {
796 DC * dc;
797 const DC_FUNCTIONS *funcs;
798
799 if (!(funcs = DRIVER_FindDriver( driver ))) return 0;
800 if (!(dc = DC_AllocDC( funcs ))) return 0;
801 dc->w.flags = 0;
802
803 TRACE(dc, "(%s %s %s): returning %04x\n",
804 driver, device, output, dc->hSelf );
805
806 if (dc->funcs->pCreateDC &&
807 !dc->funcs->pCreateDC( dc, driver, device, output, initData ))
808 {
809 WARN(dc, "creation aborted by device\n" );
810 GDI_HEAP_FREE( dc->hSelf );
811 return 0;
812 }
813
814 DC_InitDC( dc );
815 GDI_HEAP_UNLOCK( dc->hSelf );
816 return dc->hSelf;
817 }
818
819
820 /***********************************************************************
821 * CreateDC32A (GDI32.)
822 */
823 HDC32 WINAPI CreateDC32A( LPCSTR driver, LPCSTR device, LPCSTR output,
824 const DEVMODE32A *initData )
825 {
826 return CreateDC16( driver, device, output, (const DEVMODE16 *)initData );
827 }
828
829
830 /***********************************************************************
831 * CreateDC32W (GDI32.)
832 */
833 HDC32 WINAPI CreateDC32W( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
834 const DEVMODE32W *initData )
835 {
836 LPSTR driverA = HEAP_strdupWtoA( GetProcessHeap(), 0, driver );
837 LPSTR deviceA = HEAP_strdupWtoA( GetProcessHeap(), 0, device );
838 LPSTR outputA = HEAP_strdupWtoA( GetProcessHeap(), 0, output );
839 HDC32 res = CreateDC16( driverA, deviceA, outputA,
840 (const DEVMODE16 *)initData /*FIXME*/ );
841 HeapFree( GetProcessHeap(), 0, driverA );
842 HeapFree( GetProcessHeap(), 0, deviceA );
843 HeapFree( GetProcessHeap(), 0, outputA );
844 return res;
845 }
846
847
848 /***********************************************************************
849 * CreateIC16 (GDI.153)
850 */
851 HDC16 WINAPI CreateIC16( LPCSTR driver, LPCSTR device, LPCSTR output,
852 const DEVMODE16* initData )
853 {
854 /* Nothing special yet for ICs */
855 return CreateDC16( driver, device, output, initData );
856 }
857
858
859 /***********************************************************************
860 * CreateIC32A (GDI32.49)
861 */
862 HDC32 WINAPI CreateIC32A( LPCSTR driver, LPCSTR device, LPCSTR output,
863 const DEVMODE32A* initData )
864 {
865 /* Nothing special yet for ICs */
866 return CreateDC32A( driver, device, output, initData );
867 }
868
869
870 /***********************************************************************
871 * CreateIC32W (GDI32.50)
872 */
873 HDC32 WINAPI CreateIC32W( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
874 const DEVMODE32W* initData )
875 {
876 /* Nothing special yet for ICs */
877 return CreateDC32W( driver, device, output, initData );
878 }
879
880
881 /***********************************************************************
882 * CreateCompatibleDC16 (GDI.52)
883 */
884 HDC16 WINAPI CreateCompatibleDC16( HDC16 hdc )
885 {
886 return (HDC16)CreateCompatibleDC32( hdc );
887 }
888
889
890 /***********************************************************************
891 * CreateCompatibleDC32 (GDI32.31)
892 */
893 HDC32 WINAPI CreateCompatibleDC32( HDC32 hdc )
894 {
895 DC *dc, *origDC;
896 HBITMAP32 hbitmap;
897 const DC_FUNCTIONS *funcs;
898
899 if ((origDC = (DC *)GDI_GetObjPtr( hdc, DC_MAGIC ))) funcs = origDC->funcs;
900 else funcs = DRIVER_FindDriver( "DISPLAY" );
901 if (!funcs) return 0;
902
903 if (!(dc = DC_AllocDC( funcs ))) return 0;
904
905 TRACE(dc, "(%04x): returning %04x\n",
906 hdc, dc->hSelf );
907
908 /* Create default bitmap */
909 if (!(hbitmap = CreateBitmap32( 1, 1, 1, 1, NULL )))
910 {
911 GDI_HEAP_FREE( dc->hSelf );
912 return 0;
913 }
914 dc->w.flags = DC_MEMORY;
915 dc->w.bitsPerPixel = 1;
916 dc->w.hBitmap = hbitmap;
917 dc->w.hFirstBitmap = hbitmap;
918
919 if (dc->funcs->pCreateDC &&
920 !dc->funcs->pCreateDC( dc, NULL, NULL, NULL, NULL ))
921 {
922 WARN(dc, "creation aborted by device\n");
923 DeleteObject32( hbitmap );
924 GDI_HEAP_FREE( dc->hSelf );
925 return 0;
926 }
927
928 DC_InitDC( dc );
929 GDI_HEAP_UNLOCK( dc->hSelf );
930 return dc->hSelf;
931 }
932
933
934 /***********************************************************************
935 * DeleteDC16 (GDI.68)
936 */
937 BOOL16 WINAPI DeleteDC16( HDC16 hdc )
938 {
939 return DeleteDC32( hdc );
940 }
941
942
943 /***********************************************************************
944 * DeleteDC32 (GDI32.67)
945 */
946 BOOL32 WINAPI DeleteDC32( HDC32 hdc )
947 {
948 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
949 if (!dc) return FALSE;
950
951 TRACE(dc, "%04x\n", hdc );
952
953 while (dc->saveLevel)
954 {
955 DC * dcs;
956 HDC16 hdcs = dc->header.hNext;
957 if (!(dcs = (DC *) GDI_GetObjPtr( hdcs, DC_MAGIC ))) break;
958 dc->header.hNext = dcs->header.hNext;
959 dc->saveLevel--;
960 DeleteDC32( hdcs );
961 }
962
963 if (!(dc->w.flags & DC_SAVED))
964 {
965 SelectObject32( hdc, STOCK_BLACK_PEN );
966 SelectObject32( hdc, STOCK_WHITE_BRUSH );
967 SelectObject32( hdc, STOCK_SYSTEM_FONT );
968 if (dc->w.flags & DC_MEMORY) DeleteObject32( dc->w.hFirstBitmap );
969 if (dc->funcs->pDeleteDC) dc->funcs->pDeleteDC(dc);
970 }
971
972 if (dc->w.hClipRgn) DeleteObject32( dc->w.hClipRgn );
973 if (dc->w.hVisRgn) DeleteObject32( dc->w.hVisRgn );
974 if (dc->w.hGCClipRgn) DeleteObject32( dc->w.hGCClipRgn );
975
976 PATH_DestroyGdiPath(&dc->w.path);
977
978 return GDI_FreeObject( hdc );
979 }
980
981
982 /***********************************************************************
983 * ResetDC16 (GDI.376)
984 */
985 HDC16 WINAPI ResetDC16( HDC16 hdc, const DEVMODE16 *devmode )
986 {
987 FIXME(dc, "stub\n" );
988 return hdc;
989 }
990
991
992 /***********************************************************************
993 * ResetDC32A (GDI32.287)
994 */
995 HDC32 WINAPI ResetDC32A( HDC32 hdc, const DEVMODE32A *devmode )
996 {
997 FIXME(dc, "stub\n" );
998 return hdc;
999 }
1000
1001
1002 /***********************************************************************
1003 * ResetDC32W (GDI32.288)
1004 */
1005 HDC32 WINAPI ResetDC32W( HDC32 hdc, const DEVMODE32W *devmode )
1006 {
1007 FIXME(dc, "stub\n" );
1008 return hdc;
1009 }
1010
1011
1012 /***********************************************************************
1013 * GetDeviceCaps16 (GDI.80)
1014 */
1015 INT16 WINAPI GetDeviceCaps16( HDC16 hdc, INT16 cap )
1016 {
1017 return GetDeviceCaps32( hdc, cap );
1018 }
1019
1020
1021 /***********************************************************************
1022 * GetDeviceCaps32 (GDI32.171)
1023 */
1024 INT32 WINAPI GetDeviceCaps32( HDC32 hdc, INT32 cap )
1025 {
1026 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
1027 INT32 ret;
1028
1029 if (!dc) return 0;
1030
1031 if ((cap < 0) || (cap > sizeof(DeviceCaps)-sizeof(WORD)))
1032 {
1033 GDI_HEAP_UNLOCK( hdc );
1034 return 0;
1035 }
1036
1037 TRACE(dc, "(%04x,%d): returning %d\n",
1038 hdc, cap, *(WORD *)(((char *)dc->w.devCaps) + cap) );
1039 ret = *(WORD *)(((char *)dc->w.devCaps) + cap);
1040 GDI_HEAP_UNLOCK( hdc );
1041 return ret;
1042 }
1043
1044
1045 /***********************************************************************
1046 * SetBkColor16 (GDI.1)
1047 */
1048 COLORREF WINAPI SetBkColor16( HDC16 hdc, COLORREF color )
1049 {
1050 return SetBkColor32( hdc, color );
1051 }
1052
1053
1054 /***********************************************************************
1055 * SetBkColor32 (GDI32.305)
1056 */
1057 COLORREF WINAPI SetBkColor32( HDC32 hdc, COLORREF color )
1058 {
1059 COLORREF oldColor;
1060 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
1061 if (!dc)
1062 {
1063 dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
1064 if (!dc) return 0x80000000;
1065 MF_MetaParam2(dc, META_SETBKCOLOR, HIWORD(color), LOWORD(color));
1066 GDI_HEAP_UNLOCK( hdc );
1067 return 0; /* ?? */
1068 }
1069
1070 oldColor = dc->w.backgroundColor;
1071 dc->w.backgroundColor = color;
1072 dc->w.backgroundPixel = COLOR_ToPhysical( dc, color );
1073 GDI_HEAP_UNLOCK( hdc );
1074 return oldColor;
1075 }
1076
1077
1078 /***********************************************************************
1079 * SetTextColor16 (GDI.9)
1080 */
1081 COLORREF WINAPI SetTextColor16( HDC16 hdc, COLORREF color )
1082 {
1083 return SetTextColor32( hdc, color );
1084 }
1085
1086
1087 /***********************************************************************
1088 * SetTextColor32 (GDI32.338)
1089 */
1090 COLORREF WINAPI SetTextColor32( HDC32 hdc, COLORREF color )
1091 {
1092 COLORREF oldColor;
1093 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
1094 if (!dc)
1095 {
1096 dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
1097 if (!dc) return 0x80000000;
1098 MF_MetaParam2(dc, META_SETTEXTCOLOR, HIWORD(color), LOWORD(color));
1099 GDI_HEAP_UNLOCK( hdc );
1100 return 0; /* ?? */
1101 }
1102
1103 oldColor = dc->w.textColor;
1104 dc->w.textColor = color;
1105 dc->w.textPixel = COLOR_ToPhysical( dc, color );
1106 GDI_HEAP_UNLOCK( hdc );
1107 return oldColor;
1108 }
1109
1110
1111 /***********************************************************************
1112 * SetTextAlign16 (GDI.346)
1113 */
1114 UINT16 WINAPI SetTextAlign16( HDC16 hdc, UINT16 textAlign )
1115 {
1116 return SetTextAlign32( hdc, textAlign );
1117 }
1118
1119
1120 /***********************************************************************
1121 * SetTextAlign32 (GDI32.336)
1122 */
1123 UINT32 WINAPI SetTextAlign32( HDC32 hdc, UINT32 textAlign )
1124 {
1125 UINT32 prevAlign;
1126 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
1127 if (!dc)
1128 {
1129 if (!(dc = (DC *)GDI_GetObjPtr( hdc, METAFILE_DC_MAGIC ))) return 0;
1130 MF_MetaParam1( dc, META_SETTEXTALIGN, textAlign );
1131 GDI_HEAP_UNLOCK( hdc );
1132 return 1;
1133 }
1134 prevAlign = dc->w.textAlign;
1135 dc->w.textAlign = textAlign;
1136 GDI_HEAP_UNLOCK( hdc );
1137 return prevAlign;
1138 }
1139
1140
1141 /***********************************************************************
1142 * GetDCOrgEx (GDI32.168)
1143 */
1144 BOOL32 WINAPI GetDCOrgEx( HDC32 hDC, LPPOINT32 lpp )
1145 {
1146 DC * dc;
1147 if (!lpp) return FALSE;
1148 if (!(dc = (DC *) GDI_GetObjPtr( hDC, DC_MAGIC ))) return FALSE;
1149
1150 if (!(dc->w.flags & DC_MEMORY))
1151 {
1152 Window root;
1153 int w, h, border, depth;
1154 /* FIXME: this is not correct for managed windows */
1155 TSXGetGeometry( display, dc->u.x.drawable, &root,
1156 &lpp->x, &lpp->y, &w, &h, &border, &depth );
1157 }
1158 else lpp->x = lpp->y = 0;
1159 lpp->x += dc->w.DCOrgX; lpp->y += dc->w.DCOrgY;
1160 GDI_HEAP_UNLOCK( hDC );
1161 return TRUE;
1162 }
1163
1164
1165 /***********************************************************************
1166 * GetDCOrg (GDI.79)
1167 */
1168 DWORD WINAPI GetDCOrg( HDC16 hdc )
1169 {
1170 POINT32 pt;
1171 if( GetDCOrgEx( hdc, &pt) )
1172 return MAKELONG( (WORD)pt.x, (WORD)pt.y );
1173 return 0;
1174 }
1175
1176
1177 /***********************************************************************
1178 * SetDCOrg (GDI.117)
1179 */
1180 DWORD WINAPI SetDCOrg( HDC16 hdc, INT16 x, INT16 y )
1181 {
1182 DWORD prevOrg;
1183 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
1184 if (!dc) return 0;
1185 prevOrg = dc->w.DCOrgX | (dc->w.DCOrgY << 16);
1186 dc->w.DCOrgX = x;
1187 dc->w.DCOrgY = y;
1188 GDI_HEAP_UNLOCK( hdc );
1189 return prevOrg;
1190 }
1191
1192
1193 /***********************************************************************
1194 * GetGraphicsMode (GDI32.188)
1195 */
1196 INT32 WINAPI GetGraphicsMode( HDC32 hdc )
1197 {
1198 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
1199 if (!dc) return 0;
1200 return dc->w.GraphicsMode;
1201 }
1202
1203
1204 /***********************************************************************
1205 * SetGraphicsMode (GDI32.317)
1206 */
1207 INT32 WINAPI SetGraphicsMode( HDC32 hdc, INT32 mode )
1208 {
1209 INT32 ret;
1210 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
1211
1212 /* One would think that setting the graphics mode to GM_COMPATIBLE
1213 * would also reset the world transformation matrix to the unity
1214 * matrix. However, in Windows, this is not the case. This doesn't
1215 * make a lot of sense to me, but that's the way it is.
1216 */
1217
1218 if (!dc) return 0;
1219 if ((mode <= 0) || (mode > GM_LAST)) return 0;
1220 ret = dc->w.GraphicsMode;
1221 dc->w.GraphicsMode = mode;
1222 return ret;
1223 }
1224
1225
1226 /***********************************************************************
1227 * GetArcDirection16 (GDI.524)
1228 */
1229 INT16 WINAPI GetArcDirection16( HDC16 hdc )
1230 {
1231 return GetArcDirection32( (HDC32)hdc );
1232 }
1233
1234
1235 /***********************************************************************
1236 * GetArcDirection32 (GDI32.141)
1237 */
1238 INT32 WINAPI GetArcDirection32( HDC32 hdc )
1239 {
1240 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
1241
1242 if (!dc)
1243 return 0;
1244
1245 return dc->w.ArcDirection;
1246 }
1247
1248
1249 /***********************************************************************
1250 * SetArcDirection16 (GDI.525)
1251 */
1252 INT16 WINAPI SetArcDirection16( HDC16 hdc, INT16 nDirection )
1253 {
1254 return SetArcDirection32( (HDC32)hdc, (INT32)nDirection );
1255 }
1256
1257
1258 /***********************************************************************
1259 * SetArcDirection32 (GDI32.302)
1260 */
1261 INT32 WINAPI SetArcDirection32( HDC32 hdc, INT32 nDirection )
1262 {
1263 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
1264 INT32 nOldDirection;
1265
1266 if (!dc)
1267 return 0;
1268
1269 if (nDirection!=AD_COUNTERCLOCKWISE && nDirection!=AD_CLOCKWISE)
1270 {
1271 SetLastError(ERROR_INVALID_PARAMETER);
1272 return 0;
1273 }
1274
1275 nOldDirection = dc->w.ArcDirection;
1276 dc->w.ArcDirection = nDirection;
1277
1278 return nOldDirection;
1279 }
1280
1281
1282 /***********************************************************************
1283 * GetWorldTransform (GDI32.244)
1284 */
1285 BOOL32 WINAPI GetWorldTransform( HDC32 hdc, LPXFORM xform )
1286 {
1287 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
1288
1289 if (!dc)
1290 return FALSE;
1291 if (!xform)
1292 return FALSE;
1293
1294 *xform = dc->w.xformWorld2Wnd;
1295
1296 return TRUE;
1297 }
1298
1299
1300 /***********************************************************************
1301 * SetWorldTransform (GDI32.346)
1302 */
1303 BOOL32 WINAPI SetWorldTransform( HDC32 hdc, const XFORM *xform )
1304 {
1305 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
1306
1307 if (!dc)
1308 {
1309 SetLastError( ERROR_INVALID_HANDLE );
1310 return FALSE;
1311 }
1312
1313 if (!xform)
1314 return FALSE;
1315
1316 /* Check that graphics mode is GM_ADVANCED */
1317 if (dc->w.GraphicsMode!=GM_ADVANCED)
1318 return FALSE;
1319
1320 dc->w.xformWorld2Wnd = *xform;
1321
1322 DC_UpdateXforms( dc );
1323
1324 return TRUE;
1325 }
1326
1327
1328 /****************************************************************************
1329 * ModifyWorldTransform [GDI32.253]
1330 * Modifies the world transformation for a device context.
1331 *
1332 * PARAMS
1333 * hdc [I] Handle to device context
1334 * xform [I] XFORM structure that will be used to modify the world
1335 * transformation
1336 * iMode [I] Specifies in what way to modify the world transformation
1337 * Possible values:
1338 * MWT_IDENTITY
1339 * Resets the world transformation to the identity matrix.
1340 * The parameter xform is ignored.
1341 * MWT_LEFTMULTIPLY
1342 * Multiplies xform into the world transformation matrix from
1343 * the left.
1344 * MWT_RIGHTMULTIPLY
1345 * Multiplies xform into the world transformation matrix from
1346 * the right.
1347 *
1348 * RETURNS STD
1349 */
1350 BOOL32 WINAPI ModifyWorldTransform( HDC32 hdc, const XFORM *xform,
1351 DWORD iMode )
1352 {
1353 DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
1354
1355 /* Check for illegal parameters */
1356 if (!dc)
1357 {
1358 SetLastError( ERROR_INVALID_HANDLE );
1359 return FALSE;
1360 }
1361 if (!xform)
1362 return FALSE;
1363
1364 /* Check that graphics mode is GM_ADVANCED */
1365 if (dc->w.GraphicsMode!=GM_ADVANCED)
1366 return FALSE;
1367
1368 switch (iMode)
1369 {
1370 case MWT_IDENTITY:
1371 dc->w.xformWorld2Wnd.eM11 = 1.0f;
1372 dc->w.xformWorld2Wnd.eM12 = 0.0f;
1373 dc->w.xformWorld2Wnd.eM21 = 0.0f;
1374 dc->w.xformWorld2Wnd.eM22 = 1.0f;
1375 dc->w.xformWorld2Wnd.eDx = 0.0f;
1376 dc->w.xformWorld2Wnd.eDy = 0.0f;
1377 break;
1378 case MWT_LEFTMULTIPLY:
1379 CombineTransform( &dc->w.xformWorld2Wnd, xform,
1380 &dc->w.xformWorld2Wnd );
1381 break;
1382 case MWT_RIGHTMULTIPLY:
1383 CombineTransform( &dc->w.xformWorld2Wnd, &dc->w.xformWorld2Wnd,
1384 xform );
1385 break;
1386 default:
1387 return FALSE;
1388 }
1389
1390 DC_UpdateXforms( dc );
1391
1392 return TRUE;
1393 }
1394
1395
1396 /****************************************************************************
1397 * CombineTransform [GDI32.20]
1398 * Combines two transformation matrices.
1399 *
1400 * PARAMS
1401 * xformResult [O] Stores the result of combining the two matrices
1402 * xform1 [I] Specifies the first matrix to apply
1403 * xform2 [I] Specifies the second matrix to apply
1404 *
1405 * REMARKS
1406 * The same matrix can be passed in for more than one of the parameters.
1407 *
1408 * RETURNS STD
1409 */
1410 BOOL32 WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
1411 const XFORM *xform2 )
1412 {
1413 XFORM xformTemp;
1414
1415 /* Check for illegal parameters */
1416 if (!xformResult || !xform1 || !xform2)
1417 return FALSE;
1418
1419 /* Create the result in a temporary XFORM, since xformResult may be
1420 * equal to xform1 or xform2 */
1421 xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
1422 xform1->eM12 * xform2->eM21;
1423 xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
1424 xform1->eM12 * xform2->eM22;
1425 xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
1426 xform1->eM22 * xform2->eM21;
1427 xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
1428 xform1->eM22 * xform2->eM22;
1429 xformTemp.eDx = xform1->eDx * xform2->eM11 +
1430 xform1->eDy * xform2->eM21 +
1431 xform2->eDx;
1432 xformTemp.eDy = xform1->eDx * xform2->eM12 +
1433 xform1->eDy * xform2->eM22 +
1434 xform2->eDy;
1435
1436 /* Copy the result to xformResult */
1437 *xformResult = xformTemp;
1438
1439 return TRUE;
1440 }
1441
1442
1443 /***********************************************************************
1444 * SetDCHook (GDI.190)
1445 */
1446 BOOL16 WINAPI SetDCHook( HDC16 hdc, FARPROC16 hookProc, DWORD dwHookData )
1447 {
1448 DC *dc = (DC *)GDI_GetObjPtr( hdc, DC_MAGIC );
1449
1450 TRACE(dc, "hookProc %08x, default is %08x\n",
1451 (UINT32)hookProc, (UINT32)DCHook );
1452
1453 if (!dc) return FALSE;
1454 dc->hookProc = hookProc;
1455 dc->dwHookData = dwHookData;
1456 GDI_HEAP_UNLOCK( hdc );
1457 return TRUE;
1458 }
1459
1460
1461 /***********************************************************************
1462 * GetDCHook (GDI.191)
1463 */
1464 DWORD WINAPI GetDCHook( HDC16 hdc, FARPROC16 *phookProc )
1465 {
1466 DC *dc = (DC *)GDI_GetObjPtr( hdc, DC_MAGIC );
1467 if (!dc) return 0;
1468 *phookProc = dc->hookProc;
1469 GDI_HEAP_UNLOCK( hdc );
1470 return dc->dwHookData;
1471 }
1472
1473
1474 /***********************************************************************
1475 * SetHookFlags (GDI.192)
1476 */
1477 WORD WINAPI SetHookFlags(HDC16 hDC, WORD flags)
1478 {
1479 DC* dc = (DC*)GDI_GetObjPtr( hDC, DC_MAGIC );
1480
1481 if( dc )
1482 {
1483 WORD wRet = dc->w.flags & DC_DIRTY;
1484
1485 /* "Undocumented Windows" info is slightly confusing.
1486 */
1487
1488 TRACE(dc,"hDC %04x, flags %04x\n",hDC,flags);
1489
1490 if( flags & DCHF_INVALIDATEVISRGN )
1491 dc->w.flags |= DC_DIRTY;
1492 else if( flags & DCHF_VALIDATEVISRGN || !flags )
1493 dc->w.flags &= ~DC_DIRTY;
1494 GDI_HEAP_UNLOCK( hDC );
1495 return wRet;
1496 }
1497 return 0;
1498 }
1499
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