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;
113 static cairo_surface_t *csBoardWindow, *csDualBoard;
114 static cairo_surface_t *pngPieceImages[2][(int)BlackPawn+4]; // png 256 x 256 images
115 static cairo_surface_t *pngPieceBitmaps[2][(int)BlackPawn]; // scaled pieces as used
116 static cairo_surface_t *pngPieceBitmaps2[2][(int)BlackPawn+4]; // scaled pieces in store
117 static cairo_surface_t *pngBoardBitmap[2];
118 int useTexture, textureW[2], textureH[2];
120 #define pieceToSolid(piece) &pieceBitmap[SOLID][(piece) % (int)BlackPawn]
121 #define pieceToOutline(piece) &pieceBitmap[OUTLINE][(piece) % (int)BlackPawn]
123 #define White(piece) ((int)(piece) < (int)BlackPawn)
127 } gridSegments[BOARD_RANKS + BOARD_FILES + 2];
134 cairo_surface_t *cstmp = csBoardWindow;
135 csBoardWindow = csDualBoard;
138 csBoardWindow = DRAWABLE(dualOptions+3);
144 #define BoardSize int
146 InitDrawingSizes (BoardSize boardSize, int flags)
147 { // [HGM] resize is functional now, but for board format changes only (nr of ranks, files)
148 int boardWidth, boardHeight;
150 static int oldWidth, oldHeight;
151 static VariantClass oldVariant;
152 static int oldMono = -1, oldTwoBoards = 0;
153 extern Widget formWidget;
155 if(!formWidget) return;
157 if(oldTwoBoards && !twoBoards) PopDown(DummyDlg);
158 oldTwoBoards = twoBoards;
160 if(appData.overrideLineGap >= 0) lineGap = appData.overrideLineGap;
161 boardWidth = lineGap + BOARD_WIDTH * (squareSize + lineGap);
162 boardHeight = lineGap + BOARD_HEIGHT * (squareSize + lineGap);
164 if(boardWidth != oldWidth || boardHeight != oldHeight) { // do resizing stuff only if size actually changed
166 oldWidth = boardWidth; oldHeight = boardHeight;
170 * Inhibit shell resizing.
172 ResizeBoardWindow(boardWidth, boardHeight, 0);
177 // [HGM] pieces: tailor piece bitmaps to needs of specific variant
180 if(gameInfo.variant != oldVariant) { // and only if variant changed
184 for(p=0; p<=(int)WhiteKing; p++)
185 pngPieceBitmaps[i][p] = pngPieceBitmaps2[i][p]; // defaults
186 if(gameInfo.variant == VariantShogi) {
187 pngPieceBitmaps[i][(int)WhiteCannon] = pngPieceBitmaps2[i][(int)WhiteKing+1];
188 pngPieceBitmaps[i][(int)WhiteNightrider] = pngPieceBitmaps2[i][(int)WhiteKing+2];
189 pngPieceBitmaps[i][(int)WhiteSilver] = pngPieceBitmaps2[i][(int)WhiteKing+3];
190 pngPieceBitmaps[i][(int)WhiteGrasshopper] = pngPieceBitmaps2[i][(int)WhiteKing+4];
191 pngPieceBitmaps[i][(int)WhiteQueen] = pngPieceBitmaps2[i][(int)WhiteLance];
194 if(gameInfo.variant == VariantGothic) {
195 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteSilver];
198 if(gameInfo.variant == VariantSChess) {
199 pngPieceBitmaps[i][(int)WhiteAngel] = pngPieceBitmaps2[i][(int)WhiteFalcon];
200 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteAlfil];
203 oldMono = -10; // kludge to force recreation of animation masks
204 oldVariant = gameInfo.variant;
207 oldMono = appData.monoMode;
211 CreatePNGBoard (char *s, int kind)
213 if(!appData.useBitmaps || s == NULL || *s == 0 || *s == '*') { useTexture &= ~(kind+1); return; }
214 if(strstr(s, ".png")) {
215 cairo_surface_t *img = cairo_image_surface_create_from_png (s);
217 useTexture |= kind + 1; pngBoardBitmap[kind] = img;
218 textureW[kind] = cairo_image_surface_get_width (img);
219 textureH[kind] = cairo_image_surface_get_height (img);
224 char *pngPieceNames[] = // must be in same order as internal piece encoding
225 { "Pawn", "Knight", "Bishop", "Rook", "Queen", "Advisor", "Elephant", "Archbishop", "Marshall", "Gold", "Commoner",
226 "Canon", "Nightrider", "CrownedBishop", "CrownedRook", "Princess", "Chancellor", "Hawk", "Lance", "Cobra", "Unicorn", "King",
227 "GoldKnight", "GoldLance", "GoldPawn", "GoldSilver", NULL
231 ConvertPixmap (int color, int piece)
233 int i, j, stride, f, colcode[10], w, b;
235 cairo_surface_t *res;
236 XpmPieces *p = builtInXpms + 10;
237 char **pixels = p->xpm[piece % BlackPawn][2*color];
239 sscanf(pixels[0], "%*d %*d %d", &f);
240 sscanf(appData.whitePieceColor+1, "%x", &w);
241 sscanf(appData.blackPieceColor+1, "%x", &b);
242 res = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, p->size, p->size);
243 stride = cairo_image_surface_get_stride(res);
244 buf = (int *) cairo_image_surface_get_data(res);
246 ch[i] = pixels[i+1][0];
248 if(strstr(pixels[i+1], "black")) colcode[i] = 0xFF000000; // 0xFF000000 + (color ? b : 0);
249 if(strstr(pixels[i+1], "white")) colcode[i] = 0xFFFFFFCC; // 0xFF000000 + w;
251 for(i=0; i<p->size; i++) {
252 for(j=0; j<p->size; j++) {
253 char c = pixels[i+f+1][j];
255 for(k=0; ch[k] != c && k < f; k++);
256 buf[i*p->size + j] = colcode[k];
259 cairo_surface_mark_dirty(res);
264 ScaleOnePiece (char *name, int color, int piece)
268 cairo_surface_t *img, *cs;
271 if((img = pngPieceImages[color][piece]) == NULL) { // if PNG file for this piece was not yet read, read it now and store it
272 if(!*appData.pngDirectory) img = ConvertPixmap(color, piece); else {
273 snprintf(buf, MSG_SIZ, "%s/%s%s.png", appData.pngDirectory, color ? "Black" : "White", pngPieceNames[piece]);
274 img = cairo_image_surface_create_from_png (buf);
275 if(cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) img = ConvertPixmap(color, piece);
278 pngPieceImages[color][piece] = img;
279 // create new bitmap to hold scaled piece image (and remove any old)
280 if(pngPieceBitmaps2[color][piece]) cairo_surface_destroy (pngPieceBitmaps2[color][piece]);
281 pngPieceBitmaps2[color][piece] = cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
282 if(piece <= WhiteKing) pngPieceBitmaps[color][piece] = cs;
283 // scaled copying of the raw png image
284 cr = cairo_create(cs);
285 w = cairo_image_surface_get_width (img);
286 h = cairo_image_surface_get_height (img);
287 cairo_scale(cr, squareSize/w, squareSize/h);
288 cairo_set_source_surface (cr, img, 0, 0);
291 { // operate on bitmap to color it (king-size hack...)
292 int stride = cairo_image_surface_get_stride(cs)/4;
293 int *buf = (int *) cairo_image_surface_get_data(cs);
295 sscanf(color ? appData.blackPieceColor+1 : appData.whitePieceColor+1, "%x", &p); // replacement color
296 cairo_surface_flush(cs);
297 for(i=0; i<squareSize; i++) for(j=0; j<squareSize; j++) {
300 unsigned int c = buf[i*stride + j];
301 a = c >> 24; r = c >> 16 & 255; // alpha and red, where red is the 'white' weight, since white is #FFFFCC in the source images
302 f = (color ? a - r : r)/255.; // fraction of black or white in the mix that has to be replaced
303 buf[i*stride + j] = c & 0xFF000000; // alpha channel is kept at same opacity
304 buf[i*stride + j] += ((int)(f*(p&0xFF0000)) & 0xFF0000) + ((int)(f*(p&0xFF00)) & 0xFF00) + (int)(f*(p&0xFF)); // add desired fraction of new color
305 if(color) buf[i*stride + j] += r | r << 8 | r << 16; // details on black pieces get their weight added in pure white
307 cairo_surface_mark_dirty(cs);
316 for(p=0; pngPieceNames[p]; p++) {
317 ScaleOnePiece(pngPieceNames[p], 0, p);
318 ScaleOnePiece(pngPieceNames[p], 1, p);
324 { // [HGM] taken out of main
326 CreatePNGBoard(appData.liteBackTextureFile, 1);
327 CreatePNGBoard(appData.darkBackTextureFile, 0);
331 InitDrawingParams (int reloadPieces)
336 for(i=0; i<2; i++) for(p=0; p<BlackPawn+4; p++) {
337 if(pngPieceImages[i][p]) cairo_surface_destroy(pngPieceImages[i][p]);
338 pngPieceImages[i][p] = NULL;
343 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
346 Color (char *col, int n)
349 sscanf(col, "#%x", &c);
355 SetPen (cairo_t *cr, float w, char *col, int dash)
357 static const double dotted[] = {4.0, 4.0};
358 static int len = sizeof(dotted) / sizeof(dotted[0]);
359 cairo_set_line_width (cr, w);
360 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
361 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
364 void DrawSeekAxis( int x, int y, int xTo, int yTo )
369 cr = cairo_create (csBoardWindow);
371 cairo_move_to (cr, x, y);
372 cairo_line_to(cr, xTo, yTo );
374 SetPen(cr, 2, "#000000", 0);
381 void DrawSeekBackground( int left, int top, int right, int bottom )
383 cairo_t *cr = cairo_create (csBoardWindow);
385 cairo_rectangle (cr, left, top, right-left, bottom-top);
387 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
394 void DrawSeekText(char *buf, int x, int y)
396 cairo_t *cr = cairo_create (csBoardWindow);
398 cairo_select_font_face (cr, "Sans",
399 CAIRO_FONT_SLANT_NORMAL,
400 CAIRO_FONT_WEIGHT_NORMAL);
402 cairo_set_font_size (cr, 12.0);
404 cairo_move_to (cr, x, y+4);
405 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
406 cairo_show_text( cr, buf);
412 void DrawSeekDot(int x, int y, int colorNr)
414 cairo_t *cr = cairo_create (csBoardWindow);
415 int square = colorNr & 0x80;
419 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
421 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
423 SetPen(cr, 2, "#000000", 0);
424 cairo_stroke_preserve(cr);
426 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
427 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
428 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
439 csBoardWindow = (cairo_surface_t *) mainOptions[W_BOARD].choice;
452 if (lineGap == 0) return;
454 /* [HR] Split this into 2 loops for non-square boards. */
456 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
457 gridSegments[i].x1 = 0;
459 lineGap + BOARD_WIDTH * (squareSize + lineGap);
460 gridSegments[i].y1 = gridSegments[i].y2
461 = lineGap / 2 + (i * (squareSize + lineGap));
464 for (j = 0; j < BOARD_WIDTH + 1; j++) {
465 gridSegments[j + i].y1 = 0;
466 gridSegments[j + i].y2 =
467 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
468 gridSegments[j + i].x1 = gridSegments[j + i].x2
469 = lineGap / 2 + (j * (squareSize + lineGap));
476 /* draws a grid starting around Nx, Ny squares starting at x,y */
482 cr = cairo_create (csBoardWindow);
484 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
485 SetPen(cr, lineGap, "#000000", 0);
488 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
490 cairo_move_to (cr, gridSegments[i].x1, gridSegments[i].y1);
491 cairo_line_to (cr, gridSegments[i].x2, gridSegments[i].y2);
502 DrawBorder (int x, int y, int type)
509 case 0: col = "#000000"; break;
510 case 1: col = appData.highlightSquareColor; break;
511 case 2: col = appData.premoveHighlightColor; break;
513 cr = cairo_create(csBoardWindow);
514 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
515 cairo_rectangle(cr, x, y, squareSize+lineGap, squareSize+lineGap);
516 SetPen(cr, lineGap, col, 0);
519 DrawExpose(NULL, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap, squareSize+2*lineGap);
523 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
525 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
526 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
528 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
529 if(textureW[kind] < W*squareSize)
530 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
532 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
533 if(textureH[kind] < H*squareSize)
534 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
536 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
541 DrawLogo (Option *opt, void *logo)
543 cairo_surface_t *img;
547 if(!logo || !opt) return;
548 img = cairo_image_surface_create_from_png (logo);
549 w = cairo_image_surface_get_width (img);
550 h = cairo_image_surface_get_height (img);
551 cr = cairo_create(DRAWABLE(opt));
552 cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
553 cairo_set_source_surface (cr, img, 0, 0);
556 cairo_surface_destroy (img);
557 GraphExpose(opt, 0, 0, appData.logoSize, appData.logoSize/2);
561 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
562 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
566 cr = cairo_create (dest);
568 if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) {
569 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
570 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
571 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
574 } else { // evenly colored squares
577 case 0: col = appData.darkSquareColor; break;
578 case 1: col = appData.lightSquareColor; break;
579 case 2: col = "#000000"; break;
581 SetPen(cr, 2.0, col, 0);
582 cairo_rectangle (cr, x, y, squareSize, squareSize);
589 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
594 if ((int)piece < (int) BlackPawn) {
600 if(appData.upsideDown && flipView) { p += p < BlackPawn ? BlackPawn : -BlackPawn; }// swap white and black pieces
601 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
602 cr = cairo_create (dest);
603 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
609 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
613 cr = cairo_create(cs);
614 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
615 if(appData.monoMode) {
616 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
617 cairo_stroke_preserve(cr);
618 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
620 SetPen(cr, 2, marker == 2 ? "#FF0000" : "#FFFF00", 0);
628 DrawDot (int marker, int x, int y, int r)
629 { // used for atomic captures; no need to draw on backup
631 DoDrawDot(csBoardWindow, marker, x, y, r);
635 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *string, int align)
636 { // basic front-end board-draw function: takes care of everything that can be in square:
637 // piece, background, coordinate/count, marker dot
642 if (piece == EmptySquare) {
643 BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
645 pngDrawPiece(csBoardWindow, piece, square_color, x, y);
648 if(align) { // square carries inscription (coord or piece count)
650 cairo_text_extents_t te;
652 cr = cairo_create (csBoardWindow);
653 cairo_select_font_face (cr, "Sans",
654 CAIRO_FONT_SLANT_NORMAL,
655 CAIRO_FONT_WEIGHT_BOLD);
657 cairo_set_font_size (cr, squareSize/4);
658 // calculate where it goes
659 cairo_text_extents (cr, string, &te);
662 xx += squareSize - te.width - te.x_bearing - 1;
663 yy += squareSize - te.height - te.y_bearing - 1;
664 } else if (align == 2) {
665 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
666 } else if (align == 3) {
667 xx += squareSize - te.width -te.x_bearing - 1;
668 yy += -te.y_bearing + 3;
669 } else if (align == 4) {
670 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
673 cairo_move_to (cr, xx-1, yy);
674 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
675 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
676 cairo_show_text (cr, string);
680 if(marker) { // print fat marker dot, if requested
681 DoDrawDot(csBoardWindow, marker, x + squareSize/4, y+squareSize/4, squareSize/2);
685 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
687 /* Masks for XPM pieces. Black and white pieces can have
688 different shapes, but in the interest of retaining my
689 sanity pieces must have the same outline on both light
690 and dark squares, and all pieces must use the same
691 background square colors/images. */
693 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
696 InitAnimState (AnimNr anr)
698 DrawSeekOpen(); // set cs to board widget
699 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
700 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
701 c_animBufs[anr+4] = csBoardWindow;
702 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
703 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
710 InitAnimState(Player);
714 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
716 static cairo_t *pieceSource;
717 pieceSource = cairo_create (dest);
718 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
719 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
720 else cairo_paint(pieceSource);
721 cairo_destroy (pieceSource);
725 InsertPiece (AnimNr anr, ChessSquare piece)
727 CairoOverlayPiece(piece, c_animBufs[anr]);
731 DrawBlank (AnimNr anr, int x, int y, int startColor)
733 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
736 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
737 int srcX, int srcY, int width, int height, int destX, int destY)
739 cairo_t *cr = cairo_create (c_animBufs[anr+destBuf]);
740 cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY);
741 cairo_rectangle (cr, destX, destY, width, height);
744 if(c_animBufs[anr+destBuf] == csBoardWindow)
745 DrawExpose(NULL, destX, destY, squareSize, squareSize);
749 SetDragPiece (AnimNr anr, ChessSquare piece)
753 /* [AS] Arrow highlighting support */
756 DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr)
760 cr = cairo_create (cs);
761 cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y);
763 cairo_line_to(cr, arrow[i].x, arrow[i].y);
765 if(appData.monoMode) { // should we always outline arrow?
766 cairo_line_to(cr, arrow[0].x, arrow[0].y);
767 SetPen(cr, 2, "#000000", 0);
768 cairo_stroke_preserve(cr);
770 SetPen(cr, 2, appData.highlightSquareColor, 0);
778 DrawPolygon (Pnt arrow[], int nr)
780 DoDrawPolygon(csBoardWindow, arrow, nr);
781 // if(!dual) DoDrawPolygon(csBoardBackup, arrow, nr);