2 * draw.c -- drawing routines for XBoard
4 * Copyright 1991 by Digital Equipment Corporation, Maynard,
7 * Enhancements Copyright 1992-2001, 2002, 2003, 2004, 2005, 2006,
8 * 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
10 * The following terms apply to Digital Equipment Corporation's copyright
12 * ------------------------------------------------------------------------
15 * Permission to use, copy, modify, and distribute this software and its
16 * documentation for any purpose and without fee is hereby granted,
17 * provided that the above copyright notice appear in all copies and that
18 * both that copyright notice and this permission notice appear in
19 * supporting documentation, and that the name of Digital not be
20 * used in advertising or publicity pertaining to distribution of the
21 * software without specific, written prior permission.
23 * DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
24 * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
25 * DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
26 * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
27 * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
28 * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
30 * ------------------------------------------------------------------------
32 * The following terms apply to the enhanced version of XBoard
33 * distributed by the Free Software Foundation:
34 * ------------------------------------------------------------------------
36 * GNU XBoard is free software: you can redistribute it and/or modify
37 * it under the terms of the GNU General Public License as published by
38 * the Free Software Foundation, either version 3 of the License, or (at
39 * your option) any later version.
41 * GNU XBoard is distributed in the hope that it will be useful, but
42 * WITHOUT ANY WARRANTY; without even the implied warranty of
43 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
44 * General Public License for more details.
46 * You should have received a copy of the GNU General Public License
47 * along with this program. If not, see http://www.gnu.org/licenses/. *
49 *------------------------------------------------------------------------
50 ** See the file ChangeLog for a revision history. */
56 #include <cairo/cairo.h>
57 #include <cairo/cairo-xlib.h>
62 #else /* not STDC_HEADERS */
63 extern char *getenv();
66 # else /* not HAVE_STRING_H */
68 # endif /* not HAVE_STRING_H */
69 #endif /* not STDC_HEADERS */
76 // [HGM] bitmaps: put before incuding the bitmaps / pixmaps, to know how many piece types there are.
80 #include "pixmaps/pixmaps.h"
82 #include "bitmaps/bitmaps.h"
87 #include "xevalgraph.h"
99 #define usleep(t) _sleep2(((t)+500)/1000)
103 # define _(s) gettext (s)
104 # define N_(s) gettext_noop (s)
112 Boolean cairoAnimate;
114 cairo_surface_t *csBoardWindow;
115 static cairo_surface_t *pngPieceImages[2][(int)BlackPawn+4]; // png 256 x 256 images
116 static cairo_surface_t *pngPieceBitmaps[2][(int)BlackPawn]; // scaled pieces as used
117 static cairo_surface_t *pngPieceBitmaps2[2][(int)BlackPawn+4]; // scaled pieces in store
118 static cairo_surface_t *pngBoardBitmap[2];
119 int useTexture, textureW[2], textureH[2];
121 #define pieceToSolid(piece) &pieceBitmap[SOLID][(piece) % (int)BlackPawn]
122 #define pieceToOutline(piece) &pieceBitmap[OUTLINE][(piece) % (int)BlackPawn]
124 #define White(piece) ((int)(piece) < (int)BlackPawn)
128 } gridSegments[BOARD_RANKS + BOARD_FILES + 2];
136 currBoard = (dual ? &mainOptions[W_BOARD] : &dualOptions[3]);
137 csBoardWindow = DRAWABLE(currBoard);
140 #define BoardSize int
142 InitDrawingSizes (BoardSize boardSize, int flags)
143 { // [HGM] resize is functional now, but for board format changes only (nr of ranks, files)
144 int boardWidth, boardHeight;
146 static int oldWidth, oldHeight;
147 static VariantClass oldVariant;
148 static int oldMono = -1, oldTwoBoards = 0;
149 extern Widget formWidget;
151 if(!formWidget) return;
153 if(oldTwoBoards && !twoBoards) PopDown(DummyDlg);
154 oldTwoBoards = twoBoards;
156 if(appData.overrideLineGap >= 0) lineGap = appData.overrideLineGap;
157 boardWidth = lineGap + BOARD_WIDTH * (squareSize + lineGap);
158 boardHeight = lineGap + BOARD_HEIGHT * (squareSize + lineGap);
160 if(boardWidth != oldWidth || boardHeight != oldHeight) { // do resizing stuff only if size actually changed
162 oldWidth = boardWidth; oldHeight = boardHeight;
166 * Inhibit shell resizing.
168 ResizeBoardWindow(boardWidth, boardHeight, 0);
173 // [HGM] pieces: tailor piece bitmaps to needs of specific variant
176 if(gameInfo.variant != oldVariant) { // and only if variant changed
180 for(p=0; p<=(int)WhiteKing; p++)
181 pngPieceBitmaps[i][p] = pngPieceBitmaps2[i][p]; // defaults
182 if(gameInfo.variant == VariantShogi) {
183 pngPieceBitmaps[i][(int)WhiteCannon] = pngPieceBitmaps2[i][(int)WhiteKing+1];
184 pngPieceBitmaps[i][(int)WhiteNightrider] = pngPieceBitmaps2[i][(int)WhiteKing+2];
185 pngPieceBitmaps[i][(int)WhiteSilver] = pngPieceBitmaps2[i][(int)WhiteKing+3];
186 pngPieceBitmaps[i][(int)WhiteGrasshopper] = pngPieceBitmaps2[i][(int)WhiteKing+4];
187 pngPieceBitmaps[i][(int)WhiteQueen] = pngPieceBitmaps2[i][(int)WhiteLance];
190 if(gameInfo.variant == VariantGothic) {
191 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteSilver];
194 if(gameInfo.variant == VariantSChess) {
195 pngPieceBitmaps[i][(int)WhiteAngel] = pngPieceBitmaps2[i][(int)WhiteFalcon];
196 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteAlfil];
199 oldMono = -10; // kludge to force recreation of animation masks
200 oldVariant = gameInfo.variant;
203 oldMono = appData.monoMode;
207 CreatePNGBoard (char *s, int kind)
209 if(!appData.useBitmaps || s == NULL || *s == 0 || *s == '*') { useTexture &= ~(kind+1); return; }
210 if(strstr(s, ".png")) {
211 cairo_surface_t *img = cairo_image_surface_create_from_png (s);
213 useTexture |= kind + 1; pngBoardBitmap[kind] = img;
214 textureW[kind] = cairo_image_surface_get_width (img);
215 textureH[kind] = cairo_image_surface_get_height (img);
220 char *pngPieceNames[] = // must be in same order as internal piece encoding
221 { "Pawn", "Knight", "Bishop", "Rook", "Queen", "Advisor", "Elephant", "Archbishop", "Marshall", "Gold", "Commoner",
222 "Canon", "Nightrider", "CrownedBishop", "CrownedRook", "Princess", "Chancellor", "Hawk", "Lance", "Cobra", "Unicorn", "King",
223 "GoldKnight", "GoldLance", "GoldPawn", "GoldSilver", NULL
227 ConvertPixmap (int color, int piece)
229 int i, j, stride, f, colcode[10], w, b;
231 cairo_surface_t *res;
232 XpmPieces *p = builtInXpms + 10;
233 char **pixels = p->xpm[piece % BlackPawn][2*color];
235 sscanf(pixels[0], "%*d %*d %d", &f);
236 sscanf(appData.whitePieceColor+1, "%x", &w);
237 sscanf(appData.blackPieceColor+1, "%x", &b);
238 res = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, p->size, p->size);
239 stride = cairo_image_surface_get_stride(res);
240 buf = (int *) cairo_image_surface_get_data(res);
242 ch[i] = pixels[i+1][0];
244 if(strstr(pixels[i+1], "black")) colcode[i] = 0xFF000000; // 0xFF000000 + (color ? b : 0);
245 if(strstr(pixels[i+1], "white")) colcode[i] = 0xFFFFFFCC; // 0xFF000000 + w;
247 for(i=0; i<p->size; i++) {
248 for(j=0; j<p->size; j++) {
249 char c = pixels[i+f+1][j];
251 for(k=0; ch[k] != c && k < f; k++);
252 buf[i*p->size + j] = colcode[k];
255 cairo_surface_mark_dirty(res);
260 ScaleOnePiece (char *name, int color, int piece)
264 cairo_surface_t *img, *cs;
267 if((img = pngPieceImages[color][piece]) == NULL) { // if PNG file for this piece was not yet read, read it now and store it
268 if(!*appData.pngDirectory) img = ConvertPixmap(color, piece); else {
269 snprintf(buf, MSG_SIZ, "%s/%s%s.png", appData.pngDirectory, color ? "Black" : "White", pngPieceNames[piece]);
270 img = cairo_image_surface_create_from_png (buf);
271 if(cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) img = ConvertPixmap(color, piece);
274 pngPieceImages[color][piece] = img;
275 // create new bitmap to hold scaled piece image (and remove any old)
276 if(pngPieceBitmaps2[color][piece]) cairo_surface_destroy (pngPieceBitmaps2[color][piece]);
277 pngPieceBitmaps2[color][piece] = cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
278 if(piece <= WhiteKing) pngPieceBitmaps[color][piece] = cs;
279 // scaled copying of the raw png image
280 cr = cairo_create(cs);
281 w = cairo_image_surface_get_width (img);
282 h = cairo_image_surface_get_height (img);
283 cairo_scale(cr, squareSize/w, squareSize/h);
284 cairo_set_source_surface (cr, img, 0, 0);
287 { // operate on bitmap to color it (king-size hack...)
288 int stride = cairo_image_surface_get_stride(cs)/4;
289 int *buf = (int *) cairo_image_surface_get_data(cs);
291 sscanf(color ? appData.blackPieceColor+1 : appData.whitePieceColor+1, "%x", &p); // replacement color
292 cairo_surface_flush(cs);
293 for(i=0; i<squareSize; i++) for(j=0; j<squareSize; j++) {
296 unsigned int c = buf[i*stride + j];
297 a = c >> 24; r = c >> 16 & 255; // alpha and red, where red is the 'white' weight, since white is #FFFFCC in the source images
298 f = (color ? a - r : r)/255.; // fraction of black or white in the mix that has to be replaced
299 buf[i*stride + j] = c & 0xFF000000; // alpha channel is kept at same opacity
300 buf[i*stride + j] += ((int)(f*(p&0xFF0000)) & 0xFF0000) + ((int)(f*(p&0xFF00)) & 0xFF00) + (int)(f*(p&0xFF)); // add desired fraction of new color
301 if(color) buf[i*stride + j] += r | r << 8 | r << 16; // details on black pieces get their weight added in pure white
303 cairo_surface_mark_dirty(cs);
312 for(p=0; pngPieceNames[p]; p++) {
313 ScaleOnePiece(pngPieceNames[p], 0, p);
314 ScaleOnePiece(pngPieceNames[p], 1, p);
320 { // [HGM] taken out of main
322 CreatePNGBoard(appData.liteBackTextureFile, 1);
323 CreatePNGBoard(appData.darkBackTextureFile, 0);
327 InitDrawingParams (int reloadPieces)
332 for(i=0; i<2; i++) for(p=0; p<BlackPawn+4; p++) {
333 if(pngPieceImages[i][p]) cairo_surface_destroy(pngPieceImages[i][p]);
334 pngPieceImages[i][p] = NULL;
339 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
342 Color (char *col, int n)
345 sscanf(col, "#%x", &c);
351 SetPen (cairo_t *cr, float w, char *col, int dash)
353 static const double dotted[] = {4.0, 4.0};
354 static int len = sizeof(dotted) / sizeof(dotted[0]);
355 cairo_set_line_width (cr, w);
356 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
357 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
360 void DrawSeekAxis( int x, int y, int xTo, int yTo )
365 cr = cairo_create (csBoardWindow);
367 cairo_move_to (cr, x, y);
368 cairo_line_to(cr, xTo, yTo );
370 SetPen(cr, 2, "#000000", 0);
377 void DrawSeekBackground( int left, int top, int right, int bottom )
379 cairo_t *cr = cairo_create (csBoardWindow);
381 cairo_rectangle (cr, left, top, right-left, bottom-top);
383 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
390 void DrawSeekText(char *buf, int x, int y)
392 cairo_t *cr = cairo_create (csBoardWindow);
394 cairo_select_font_face (cr, "Sans",
395 CAIRO_FONT_SLANT_NORMAL,
396 CAIRO_FONT_WEIGHT_NORMAL);
398 cairo_set_font_size (cr, 12.0);
400 cairo_move_to (cr, x, y+4);
401 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
402 cairo_show_text( cr, buf);
408 void DrawSeekDot(int x, int y, int colorNr)
410 cairo_t *cr = cairo_create (csBoardWindow);
411 int square = colorNr & 0x80;
415 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
417 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
419 SetPen(cr, 2, "#000000", 0);
420 cairo_stroke_preserve(cr);
422 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
423 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
424 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
433 InitDrawingHandle (Option *opt)
435 csBoardWindow = DRAWABLE(opt);
453 if (lineGap == 0) return;
455 /* [HR] Split this into 2 loops for non-square boards. */
457 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
458 gridSegments[i].x1 = 0;
460 lineGap + BOARD_WIDTH * (squareSize + lineGap);
461 gridSegments[i].y1 = gridSegments[i].y2
462 = lineGap / 2 + (i * (squareSize + lineGap));
465 for (j = 0; j < BOARD_WIDTH + 1; j++) {
466 gridSegments[j + i].y1 = 0;
467 gridSegments[j + i].y2 =
468 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
469 gridSegments[j + i].x1 = gridSegments[j + i].x2
470 = lineGap / 2 + (j * (squareSize + lineGap));
477 /* draws a grid starting around Nx, Ny squares starting at x,y */
483 cr = cairo_create (csBoardWindow);
485 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
486 SetPen(cr, lineGap, "#000000", 0);
489 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
491 cairo_move_to (cr, gridSegments[i].x1, gridSegments[i].y1);
492 cairo_line_to (cr, gridSegments[i].x2, gridSegments[i].y2);
503 DrawBorder (int x, int y, int type)
510 case 0: col = "#000000"; break;
511 case 1: col = appData.highlightSquareColor; break;
512 case 2: col = appData.premoveHighlightColor; break;
514 cr = cairo_create(csBoardWindow);
515 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
516 cairo_rectangle(cr, x, y, squareSize+lineGap, squareSize+lineGap);
517 SetPen(cr, lineGap, col, 0);
520 GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap, squareSize+2*lineGap);
524 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
526 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
527 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
529 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
530 if(textureW[kind] < W*squareSize)
531 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
533 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
534 if(textureH[kind] < H*squareSize)
535 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
537 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
542 DrawLogo (Option *opt, void *logo)
544 cairo_surface_t *img;
548 if(!logo || !opt) return;
549 img = cairo_image_surface_create_from_png (logo);
550 w = cairo_image_surface_get_width (img);
551 h = cairo_image_surface_get_height (img);
552 cr = cairo_create(DRAWABLE(opt));
553 cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
554 cairo_set_source_surface (cr, img, 0, 0);
557 cairo_surface_destroy (img);
558 GraphExpose(opt, 0, 0, appData.logoSize, appData.logoSize/2);
562 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
563 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
567 cr = cairo_create (dest);
569 if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) {
570 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
571 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
572 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
575 } else { // evenly colored squares
578 case 0: col = appData.darkSquareColor; break;
579 case 1: col = appData.lightSquareColor; break;
580 case 2: col = "#000000"; break;
582 SetPen(cr, 2.0, col, 0);
583 cairo_rectangle (cr, x, y, squareSize, squareSize);
590 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
595 if ((int)piece < (int) BlackPawn) {
601 if(appData.upsideDown && flipView) { p += p < BlackPawn ? BlackPawn : -BlackPawn; }// swap white and black pieces
602 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
603 cr = cairo_create (dest);
604 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
610 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
614 cr = cairo_create(cs);
615 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
616 if(appData.monoMode) {
617 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
618 cairo_stroke_preserve(cr);
619 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
621 SetPen(cr, 2, marker == 2 ? "#FF0000" : "#FFFF00", 0);
629 DrawDot (int marker, int x, int y, int r)
630 { // used for atomic captures; no need to draw on backup
632 DoDrawDot(csBoardWindow, marker, x, y, r);
636 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *string, int align)
637 { // basic front-end board-draw function: takes care of everything that can be in square:
638 // piece, background, coordinate/count, marker dot
643 if (piece == EmptySquare) {
644 BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
646 pngDrawPiece(csBoardWindow, piece, square_color, x, y);
649 if(align) { // square carries inscription (coord or piece count)
651 cairo_text_extents_t te;
653 cr = cairo_create (csBoardWindow);
654 cairo_select_font_face (cr, "Sans",
655 CAIRO_FONT_SLANT_NORMAL,
656 CAIRO_FONT_WEIGHT_BOLD);
658 cairo_set_font_size (cr, squareSize/4);
659 // calculate where it goes
660 cairo_text_extents (cr, string, &te);
663 xx += squareSize - te.width - te.x_bearing - 1;
664 yy += squareSize - te.height - te.y_bearing - 1;
665 } else if (align == 2) {
666 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
667 } else if (align == 3) {
668 xx += squareSize - te.width -te.x_bearing - 1;
669 yy += -te.y_bearing + 3;
670 } else if (align == 4) {
671 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
674 cairo_move_to (cr, xx-1, yy);
675 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
676 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
677 cairo_show_text (cr, string);
681 if(marker) { // print fat marker dot, if requested
682 DoDrawDot(csBoardWindow, marker, x + squareSize/4, y+squareSize/4, squareSize/2);
686 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
688 /* Masks for XPM pieces. Black and white pieces can have
689 different shapes, but in the interest of retaining my
690 sanity pieces must have the same outline on both light
691 and dark squares, and all pieces must use the same
692 background square colors/images. */
694 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
697 InitAnimState (AnimNr anr)
699 DrawSeekOpen(); // set cs to board widget
700 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
701 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
702 c_animBufs[anr+4] = csBoardWindow;
703 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
704 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
711 InitAnimState(Player);
715 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
717 static cairo_t *pieceSource;
718 pieceSource = cairo_create (dest);
719 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
720 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
721 else cairo_paint(pieceSource);
722 cairo_destroy (pieceSource);
726 InsertPiece (AnimNr anr, ChessSquare piece)
728 CairoOverlayPiece(piece, c_animBufs[anr]);
732 DrawBlank (AnimNr anr, int x, int y, int startColor)
734 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
737 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
738 int srcX, int srcY, int width, int height, int destX, int destY)
740 cairo_t *cr = cairo_create (c_animBufs[anr+destBuf]);
741 cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY);
742 cairo_rectangle (cr, destX, destY, width, height);
745 if(c_animBufs[anr+destBuf] == csBoardWindow)
746 GraphExpose(currBoard, destX, destY, squareSize, squareSize);
750 SetDragPiece (AnimNr anr, ChessSquare piece)
754 /* [AS] Arrow highlighting support */
757 DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr)
761 cr = cairo_create (cs);
762 cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y);
764 cairo_line_to(cr, arrow[i].x, arrow[i].y);
766 if(appData.monoMode) { // should we always outline arrow?
767 cairo_line_to(cr, arrow[0].x, arrow[0].y);
768 SetPen(cr, 2, "#000000", 0);
769 cairo_stroke_preserve(cr);
771 SetPen(cr, 2, appData.highlightSquareColor, 0);
779 DrawPolygon (Pnt arrow[], int nr)
781 DoDrawPolygon(csBoardWindow, arrow, nr);
782 // if(!dual) DoDrawPolygon(csBoardBackup, arrow, nr);