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>
58 #include <librsvg/rsvg.h>
59 #include <librsvg/rsvg-cairo.h>
64 #else /* not STDC_HEADERS */
65 extern char *getenv();
68 # else /* not HAVE_STRING_H */
70 # endif /* not HAVE_STRING_H */
71 #endif /* not STDC_HEADERS */
78 // [HGM] bitmaps: put before incuding the bitmaps / pixmaps, to know how many piece types there are.
83 #include "xevalgraph.h"
95 #define usleep(t) _sleep2(((t)+500)/1000)
99 # define _(s) gettext (s)
100 # define N_(s) gettext_noop (s)
108 Boolean cairoAnimate;
110 cairo_surface_t *csBoardWindow;
111 static cairo_surface_t *pngPieceImages[2][(int)BlackPawn+4]; // png 256 x 256 images
112 static cairo_surface_t *pngPieceBitmaps[2][(int)BlackPawn]; // scaled pieces as used
113 static cairo_surface_t *pngPieceBitmaps2[2][(int)BlackPawn+4]; // scaled pieces in store
114 static RsvgHandle *svgPieces[2][(int)BlackPawn+4]; // vector pieces in store
115 static cairo_surface_t *pngBoardBitmap[2];
116 int useTexture, textureW[2], textureH[2];
118 #define pieceToSolid(piece) &pieceBitmap[SOLID][(piece) % (int)BlackPawn]
119 #define pieceToOutline(piece) &pieceBitmap[OUTLINE][(piece) % (int)BlackPawn]
121 #define White(piece) ((int)(piece) < (int)BlackPawn)
125 } gridSegments[BOARD_RANKS + BOARD_FILES + 2];
133 currBoard = (dual ? &mainOptions[W_BOARD] : &dualOptions[3]);
134 csBoardWindow = DRAWABLE(currBoard);
137 #define BoardSize int
139 InitDrawingSizes (BoardSize boardSize, int flags)
140 { // [HGM] resize is functional now, but for board format changes only (nr of ranks, files)
141 int boardWidth, boardHeight;
143 static int oldWidth, oldHeight;
144 static VariantClass oldVariant;
145 static int oldMono = -1, oldTwoBoards = 0;
146 extern Widget formWidget;
148 if(!formWidget) return;
150 if(oldTwoBoards && !twoBoards) PopDown(DummyDlg);
151 oldTwoBoards = twoBoards;
153 if(appData.overrideLineGap >= 0) lineGap = appData.overrideLineGap;
154 boardWidth = lineGap + BOARD_WIDTH * (squareSize + lineGap);
155 boardHeight = lineGap + BOARD_HEIGHT * (squareSize + lineGap);
157 if(boardWidth != oldWidth || boardHeight != oldHeight) { // do resizing stuff only if size actually changed
159 oldWidth = boardWidth; oldHeight = boardHeight;
163 * Inhibit shell resizing.
165 ResizeBoardWindow(boardWidth, boardHeight, 0);
170 // [HGM] pieces: tailor piece bitmaps to needs of specific variant
173 if(gameInfo.variant != oldVariant) { // and only if variant changed
177 for(p=0; p<=(int)WhiteKing; p++)
178 pngPieceBitmaps[i][p] = pngPieceBitmaps2[i][p]; // defaults
179 if(gameInfo.variant == VariantShogi) {
180 pngPieceBitmaps[i][(int)WhiteCannon] = pngPieceBitmaps2[i][(int)WhiteKing+1];
181 pngPieceBitmaps[i][(int)WhiteNightrider] = pngPieceBitmaps2[i][(int)WhiteKing+2];
182 pngPieceBitmaps[i][(int)WhiteSilver] = pngPieceBitmaps2[i][(int)WhiteKing+3];
183 pngPieceBitmaps[i][(int)WhiteGrasshopper] = pngPieceBitmaps2[i][(int)WhiteKing+4];
184 pngPieceBitmaps[i][(int)WhiteQueen] = pngPieceBitmaps2[i][(int)WhiteLance];
187 if(gameInfo.variant == VariantGothic) {
188 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteSilver];
191 if(gameInfo.variant == VariantSChess) {
192 pngPieceBitmaps[i][(int)WhiteAngel] = pngPieceBitmaps2[i][(int)WhiteFalcon];
193 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteAlfil];
196 oldMono = -10; // kludge to force recreation of animation masks
197 oldVariant = gameInfo.variant;
200 oldMono = appData.monoMode;
204 CreatePNGBoard (char *s, int kind)
206 if(!appData.useBitmaps || s == NULL || *s == 0 || *s == '*') { useTexture &= ~(kind+1); return; }
207 if(strstr(s, ".png")) {
208 cairo_surface_t *img = cairo_image_surface_create_from_png (s);
210 useTexture |= kind + 1; pngBoardBitmap[kind] = img;
211 textureW[kind] = cairo_image_surface_get_width (img);
212 textureH[kind] = cairo_image_surface_get_height (img);
217 char *pngPieceNames[] = // must be in same order as internal piece encoding
218 { "Pawn", "Knight", "Bishop", "Rook", "Queen", "Advisor", "Elephant", "Archbishop", "Marshall", "Gold", "Commoner",
219 "Canon", "Nightrider", "CrownedBishop", "CrownedRook", "Princess", "Chancellor", "Hawk", "Lance", "Cobra", "Unicorn", "King",
220 "GoldKnight", "GoldLance", "GoldPawn", "GoldSilver", NULL
224 LoadSVG (char *dir, int color, int piece)
227 RsvgHandle *svg=svgPieces[color][piece];
228 RsvgDimensionData svg_dimensions;
229 GError **svgerror=NULL;
230 cairo_surface_t *img;
233 snprintf(buf, MSG_SIZ, "%s/%s%s.svg", dir, color ? "Black" : "White", pngPieceNames[piece]);
235 if(svg || *dir && (svg = rsvg_handle_new_from_file(buf,svgerror))) {
237 rsvg_handle_get_dimensions(svg, &svg_dimensions);
238 img = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, squareSize, squareSize);
240 cr = cairo_create(img);
241 cairo_scale(cr, squareSize/(double) svg_dimensions.width, squareSize/(double) svg_dimensions.height);
242 rsvg_handle_render_cairo(svg, cr);
243 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
244 if(pngPieceImages[color][piece]) cairo_surface_destroy(pngPieceImages[color][piece]);
245 pngPieceImages[color][piece] = img;
255 ScaleOnePiece (int color, int piece)
259 cairo_surface_t *img, *cs;
264 if(!svgPieces[color][piece]) { // try to freshly render cached svg pieces first, to supply the source bitmap
265 svgPieces[color][piece] = LoadSVG("", color, piece); // this fills pngPieceImages if we had cached svg with bitmap of wanted size
268 if(!pngPieceImages[color][piece]) { // we don't have cached bitmap (implying we did not have cached svg)
269 if(*appData.pieceDirectory) { // user specified piece directory
270 snprintf(buf, MSG_SIZ, "%s/%s%s.png", appData.pieceDirectory, color ? "Black" : "White", pngPieceNames[piece]);
271 pngPieceImages[color][piece] = img = cairo_image_surface_create_from_png (buf); // try if there are png pieces there
272 if(cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) { // there were not
273 svgPieces[color][piece] = LoadSVG(appData.pieceDirectory, color, piece); // so try if he has svg there
278 if(!pngPieceImages[color][piece]) { // we still did not manage to acquire a piece bitmap
279 if(!(svgPieces[color][piece] = LoadSVG(appData.svgDirectory, color, piece))) // try to fall back on installed svg
280 DisplayError(_("No default pieces installed\nSelect your own -pieceImageDirectory"), 0); // give up
283 img = pngPieceImages[color][piece];
285 // create new bitmap to hold scaled piece image (and remove any old)
286 if(pngPieceBitmaps2[color][piece]) cairo_surface_destroy (pngPieceBitmaps2[color][piece]);
287 pngPieceBitmaps2[color][piece] = cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
288 if(piece <= WhiteKing) pngPieceBitmaps[color][piece] = cs;
290 // scaled copying of the raw png image
291 cr = cairo_create(cs);
292 w = cairo_image_surface_get_width (img);
293 h = cairo_image_surface_get_height (img);
294 cairo_scale(cr, squareSize/w, squareSize/h);
295 cairo_set_source_surface (cr, img, 0, 0);
299 if(!appData.trueColors || !*appData.pieceDirectory && !appData.svgDirectory) { // operate on bitmap to color it (king-size hack...)
300 int stride = cairo_image_surface_get_stride(cs)/4;
301 int *buf = (int *) cairo_image_surface_get_data(cs);
303 sscanf(color ? appData.blackPieceColor+1 : appData.whitePieceColor+1, "%x", &p); // replacement color
304 cairo_surface_flush(cs);
305 for(i=0; i<squareSize; i++) for(j=0; j<squareSize; j++) {
308 unsigned int c = buf[i*stride + j];
309 a = c >> 24; r = c >> 16 & 255; // alpha and red, where red is the 'white' weight, since white is #FFFFCC in the source images
310 f = (color ? a - r : r)/255.; // fraction of black or white in the mix that has to be replaced
311 buf[i*stride + j] = c & 0xFF000000; // alpha channel is kept at same opacity
312 buf[i*stride + j] += ((int)(f*(p&0xFF0000)) & 0xFF0000) + ((int)(f*(p&0xFF00)) & 0xFF00) + (int)(f*(p&0xFF)); // add desired fraction of new color
313 if(color) buf[i*stride + j] += r | r << 8 | r << 16; // details on black pieces get their weight added in pure white
315 cairo_surface_mark_dirty(cs);
324 for(p=0; pngPieceNames[p]; p++) {
332 { // [HGM] taken out of main
334 CreatePNGBoard(appData.liteBackTextureFile, 1);
335 CreatePNGBoard(appData.darkBackTextureFile, 0);
339 InitDrawingParams (int reloadPieces)
344 for(i=0; i<2; i++) for(p=0; p<BlackPawn+4; p++) {
345 if(pngPieceImages[i][p]) cairo_surface_destroy(pngPieceImages[i][p]);
346 pngPieceImages[i][p] = NULL;
347 if(svgPieces[i][p]) rsvg_handle_close(svgPieces[i][p], NULL);
348 svgPieces[i][p] = NULL;
353 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
356 Color (char *col, int n)
359 sscanf(col, "#%x", &c);
365 SetPen (cairo_t *cr, float w, char *col, int dash)
367 static const double dotted[] = {4.0, 4.0};
368 static int len = sizeof(dotted) / sizeof(dotted[0]);
369 cairo_set_line_width (cr, w);
370 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
371 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
374 void DrawSeekAxis( int x, int y, int xTo, int yTo )
379 cr = cairo_create (csBoardWindow);
381 cairo_move_to (cr, x, y);
382 cairo_line_to(cr, xTo, yTo );
384 SetPen(cr, 2, "#000000", 0);
389 GraphExpose(currBoard, x-1, yTo-1, xTo-x+2, y-yTo+2);
392 void DrawSeekBackground( int left, int top, int right, int bottom )
394 cairo_t *cr = cairo_create (csBoardWindow);
396 cairo_rectangle (cr, left, top, right-left, bottom-top);
398 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
403 GraphExpose(currBoard, left, top, right-left, bottom-top);
406 void DrawSeekText(char *buf, int x, int y)
408 cairo_t *cr = cairo_create (csBoardWindow);
410 cairo_select_font_face (cr, "Sans",
411 CAIRO_FONT_SLANT_NORMAL,
412 CAIRO_FONT_WEIGHT_NORMAL);
414 cairo_set_font_size (cr, 12.0);
416 cairo_move_to (cr, x, y+4);
417 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
418 cairo_show_text( cr, buf);
422 GraphExpose(currBoard, x-5, y-10, 60, 15);
425 void DrawSeekDot(int x, int y, int colorNr)
427 cairo_t *cr = cairo_create (csBoardWindow);
428 int square = colorNr & 0x80;
432 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
434 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
436 SetPen(cr, 2, "#000000", 0);
437 cairo_stroke_preserve(cr);
439 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
440 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
441 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
447 GraphExpose(currBoard, x-squareSize/8, y-squareSize/8, 2*(squareSize/8), 2*(squareSize/8));
451 InitDrawingHandle (Option *opt)
453 csBoardWindow = DRAWABLE(opt);
461 if (lineGap == 0) return;
463 /* [HR] Split this into 2 loops for non-square boards. */
465 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
466 gridSegments[i].x1 = 0;
468 lineGap + BOARD_WIDTH * (squareSize + lineGap);
469 gridSegments[i].y1 = gridSegments[i].y2
470 = lineGap / 2 + (i * (squareSize + lineGap));
473 for (j = 0; j < BOARD_WIDTH + 1; j++) {
474 gridSegments[j + i].y1 = 0;
475 gridSegments[j + i].y2 =
476 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
477 gridSegments[j + i].x1 = gridSegments[j + i].x2
478 = lineGap / 2 + (j * (squareSize + lineGap));
485 /* draws a grid starting around Nx, Ny squares starting at x,y */
487 float odd = (lineGap & 1)/2.;
491 cr = cairo_create (csBoardWindow);
493 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
494 SetPen(cr, lineGap, "#000000", 0);
497 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
499 cairo_move_to (cr, gridSegments[i].x1 + odd, gridSegments[i].y1 + odd);
500 cairo_line_to (cr, gridSegments[i].x2 + odd, gridSegments[i].y2 + odd);
511 DrawBorder (int x, int y, int type, int odd)
517 case 0: col = "#000000"; break;
518 case 1: col = appData.highlightSquareColor; break;
519 case 2: col = appData.premoveHighlightColor; break;
521 cr = cairo_create(csBoardWindow);
522 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
523 cairo_rectangle(cr, x+odd/2., y+odd/2., squareSize+lineGap, squareSize+lineGap);
524 SetPen(cr, lineGap, col, 0);
527 GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap+odd, squareSize+2*lineGap+odd);
531 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
533 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
534 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
536 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
537 if(textureW[kind] < W*squareSize)
538 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
540 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
541 if(textureH[kind] < H*squareSize)
542 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
544 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
549 DrawLogo (Option *opt, void *logo)
551 cairo_surface_t *img;
555 if(!logo || !opt) return;
556 img = cairo_image_surface_create_from_png (logo);
557 w = cairo_image_surface_get_width (img);
558 h = cairo_image_surface_get_height (img);
559 cr = cairo_create(DRAWABLE(opt));
560 cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
561 cairo_set_source_surface (cr, img, 0, 0);
564 cairo_surface_destroy (img);
565 GraphExpose(opt, 0, 0, appData.logoSize, appData.logoSize/2);
569 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
570 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
574 cr = cairo_create (dest);
576 if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) {
577 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
578 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
579 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
582 } else { // evenly colored squares
585 case 0: col = appData.darkSquareColor; break;
586 case 1: col = appData.lightSquareColor; break;
587 case 2: col = "#000000"; break;
589 SetPen(cr, 2.0, col, 0);
590 cairo_rectangle (cr, fac*x, fac*y, squareSize, squareSize);
591 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
598 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
603 if ((int)piece < (int) BlackPawn) {
609 if(appData.upsideDown && flipView) { p += p < BlackPawn ? BlackPawn : -BlackPawn; }// swap white and black pieces
610 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
611 cr = cairo_create (dest);
612 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
618 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
622 cr = cairo_create(cs);
623 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
624 if(appData.monoMode) {
625 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
626 cairo_stroke_preserve(cr);
627 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
629 SetPen(cr, 2, marker == 2 ? "#FF0000" : "#FFFF00", 0);
637 DrawDot (int marker, int x, int y, int r)
638 { // used for atomic captures; no need to draw on backup
639 DoDrawDot(csBoardWindow, marker, x, y, r);
640 GraphExpose(currBoard, x-r, y-r, 2*r, 2*r);
644 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *string, int align)
645 { // basic front-end board-draw function: takes care of everything that can be in square:
646 // piece, background, coordinate/count, marker dot
649 if (piece == EmptySquare) {
650 BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
652 pngDrawPiece(csBoardWindow, piece, square_color, x, y);
655 if(align) { // square carries inscription (coord or piece count)
657 cairo_text_extents_t te;
659 cr = cairo_create (csBoardWindow);
660 cairo_select_font_face (cr, "Sans",
661 CAIRO_FONT_SLANT_NORMAL,
662 CAIRO_FONT_WEIGHT_BOLD);
664 cairo_set_font_size (cr, squareSize/4);
665 // calculate where it goes
666 cairo_text_extents (cr, string, &te);
669 xx += squareSize - te.width - te.x_bearing - 1;
670 yy += squareSize - te.height - te.y_bearing - 1;
671 } else if (align == 2) {
672 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
673 } else if (align == 3) {
674 xx += squareSize - te.width -te.x_bearing - 1;
675 yy += -te.y_bearing + 3;
676 } else if (align == 4) {
677 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
680 cairo_move_to (cr, xx-1, yy);
681 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
682 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
683 cairo_show_text (cr, string);
687 if(marker) { // print fat marker dot, if requested
688 DoDrawDot(csBoardWindow, marker, x + squareSize/4, y+squareSize/4, squareSize/2);
692 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
694 /* Masks for XPM pieces. Black and white pieces can have
695 different shapes, but in the interest of retaining my
696 sanity pieces must have the same outline on both light
697 and dark squares, and all pieces must use the same
698 background square colors/images. */
700 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
703 InitAnimState (AnimNr anr)
705 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
706 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
707 c_animBufs[anr+4] = csBoardWindow;
708 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
709 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
716 InitAnimState(Player);
720 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
722 static cairo_t *pieceSource;
723 pieceSource = cairo_create (dest);
724 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
725 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
726 else cairo_paint(pieceSource);
727 cairo_destroy (pieceSource);
731 InsertPiece (AnimNr anr, ChessSquare piece)
733 CairoOverlayPiece(piece, c_animBufs[anr]);
737 DrawBlank (AnimNr anr, int x, int y, int startColor)
739 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
742 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
743 int srcX, int srcY, int width, int height, int destX, int destY)
745 cairo_t *cr = cairo_create (c_animBufs[anr+destBuf]);
746 cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY);
747 cairo_rectangle (cr, destX, destY, width, height);
750 if(c_animBufs[anr+destBuf] == csBoardWindow)
751 GraphExpose(currBoard, destX, destY, squareSize, squareSize);
755 SetDragPiece (AnimNr anr, ChessSquare piece)
759 /* [AS] Arrow highlighting support */
762 DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr)
766 cr = cairo_create (cs);
767 cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y);
769 cairo_line_to(cr, arrow[i].x, arrow[i].y);
771 if(appData.monoMode) { // should we always outline arrow?
772 cairo_line_to(cr, arrow[0].x, arrow[0].y);
773 SetPen(cr, 2, "#000000", 0);
774 cairo_stroke_preserve(cr);
776 SetPen(cr, 2, appData.highlightSquareColor, 0);
784 DrawPolygon (Pnt arrow[], int nr)
786 DoDrawPolygon(csBoardWindow, arrow, nr);
787 // if(!dual) DoDrawPolygon(csBoardBackup, arrow, nr);