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
314 if(appData.monoMode) {
315 if(a < 64) buf[i*stride + j] = 0; // if not opaque enough, totally transparent
316 else if(2*r < a) buf[i*stride + j] = 0xFF000000; // if not light enough, totally black
317 else buf[i*stride + j] = 0xFFFFFFFF; // otherwise white
320 cairo_surface_mark_dirty(cs);
329 for(p=0; pngPieceNames[p]; p++) {
337 { // [HGM] taken out of main
339 CreatePNGBoard(appData.liteBackTextureFile, 1);
340 CreatePNGBoard(appData.darkBackTextureFile, 0);
344 InitDrawingParams (int reloadPieces)
349 for(i=0; i<2; i++) for(p=0; p<BlackPawn+4; p++) {
350 if(pngPieceImages[i][p]) cairo_surface_destroy(pngPieceImages[i][p]);
351 pngPieceImages[i][p] = NULL;
352 if(svgPieces[i][p]) rsvg_handle_close(svgPieces[i][p], NULL);
353 svgPieces[i][p] = NULL;
358 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
361 Color (char *col, int n)
364 sscanf(col, "#%x", &c);
370 SetPen (cairo_t *cr, float w, char *col, int dash)
372 static const double dotted[] = {4.0, 4.0};
373 static int len = sizeof(dotted) / sizeof(dotted[0]);
374 cairo_set_line_width (cr, w);
375 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
376 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
379 void DrawSeekAxis( int x, int y, int xTo, int yTo )
384 cr = cairo_create (csBoardWindow);
386 cairo_move_to (cr, x, y);
387 cairo_line_to(cr, xTo, yTo );
389 SetPen(cr, 2, "#000000", 0);
394 GraphExpose(currBoard, x-1, yTo-1, xTo-x+2, y-yTo+2);
397 void DrawSeekBackground( int left, int top, int right, int bottom )
399 cairo_t *cr = cairo_create (csBoardWindow);
401 cairo_rectangle (cr, left, top, right-left, bottom-top);
403 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
408 GraphExpose(currBoard, left, top, right-left, bottom-top);
411 void DrawSeekText(char *buf, int x, int y)
413 cairo_t *cr = cairo_create (csBoardWindow);
415 cairo_select_font_face (cr, "Sans",
416 CAIRO_FONT_SLANT_NORMAL,
417 CAIRO_FONT_WEIGHT_NORMAL);
419 cairo_set_font_size (cr, 12.0);
421 cairo_move_to (cr, x, y+4);
422 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
423 cairo_show_text( cr, buf);
427 GraphExpose(currBoard, x-5, y-10, 60, 15);
430 void DrawSeekDot(int x, int y, int colorNr)
432 cairo_t *cr = cairo_create (csBoardWindow);
433 int square = colorNr & 0x80;
437 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
439 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
441 SetPen(cr, 2, "#000000", 0);
442 cairo_stroke_preserve(cr);
444 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
445 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
446 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
452 GraphExpose(currBoard, x-squareSize/8, y-squareSize/8, 2*(squareSize/8), 2*(squareSize/8));
456 InitDrawingHandle (Option *opt)
458 csBoardWindow = DRAWABLE(opt);
466 if (lineGap == 0) return;
468 /* [HR] Split this into 2 loops for non-square boards. */
470 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
471 gridSegments[i].x1 = 0;
473 lineGap + BOARD_WIDTH * (squareSize + lineGap);
474 gridSegments[i].y1 = gridSegments[i].y2
475 = lineGap / 2 + (i * (squareSize + lineGap));
478 for (j = 0; j < BOARD_WIDTH + 1; j++) {
479 gridSegments[j + i].y1 = 0;
480 gridSegments[j + i].y2 =
481 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
482 gridSegments[j + i].x1 = gridSegments[j + i].x2
483 = lineGap / 2 + (j * (squareSize + lineGap));
490 /* draws a grid starting around Nx, Ny squares starting at x,y */
492 float odd = (lineGap & 1)/2.;
496 cr = cairo_create (csBoardWindow);
498 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
499 SetPen(cr, lineGap, "#000000", 0);
502 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
504 cairo_move_to (cr, gridSegments[i].x1 + odd, gridSegments[i].y1 + odd);
505 cairo_line_to (cr, gridSegments[i].x2 + odd, gridSegments[i].y2 + odd);
516 DrawBorder (int x, int y, int type, int odd)
522 case 0: col = "#000000"; break;
523 case 1: col = appData.highlightSquareColor; break;
524 case 2: col = appData.premoveHighlightColor; break;
526 cr = cairo_create(csBoardWindow);
527 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
528 cairo_rectangle(cr, x+odd/2., y+odd/2., squareSize+lineGap, squareSize+lineGap);
529 SetPen(cr, lineGap, col, 0);
532 GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap+odd, squareSize+2*lineGap+odd);
536 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
538 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
539 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
541 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
542 if(textureW[kind] < W*squareSize)
543 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
545 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
546 if(textureH[kind] < H*squareSize)
547 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
549 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
554 DrawLogo (Option *opt, void *logo)
556 cairo_surface_t *img;
560 if(!logo || !opt) return;
561 img = cairo_image_surface_create_from_png (logo);
562 w = cairo_image_surface_get_width (img);
563 h = cairo_image_surface_get_height (img);
564 cr = cairo_create(DRAWABLE(opt));
565 cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
566 cairo_set_source_surface (cr, img, 0, 0);
569 cairo_surface_destroy (img);
570 GraphExpose(opt, 0, 0, appData.logoSize, appData.logoSize/2);
574 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
575 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
579 cr = cairo_create (dest);
581 if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) {
582 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
583 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
584 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
587 } else { // evenly colored squares
590 case 0: col = appData.darkSquareColor; break;
591 case 1: col = appData.lightSquareColor; break;
592 case 2: col = "#000000"; break;
594 SetPen(cr, 2.0, col, 0);
595 cairo_rectangle (cr, fac*x, fac*y, squareSize, squareSize);
596 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
603 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
608 if ((int)piece < (int) BlackPawn) {
614 if(appData.upsideDown && flipView) { p += p < BlackPawn ? BlackPawn : -BlackPawn; }// swap white and black pieces
615 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
616 cr = cairo_create (dest);
617 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
623 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
627 cr = cairo_create(cs);
628 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
629 if(appData.monoMode) {
630 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
631 cairo_stroke_preserve(cr);
632 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
634 SetPen(cr, 2, marker == 2 ? "#FF0000" : "#FFFF00", 0);
642 DrawDot (int marker, int x, int y, int r)
643 { // used for atomic captures; no need to draw on backup
644 DoDrawDot(csBoardWindow, marker, x, y, r);
645 GraphExpose(currBoard, x-r, y-r, 2*r, 2*r);
649 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *string, int align)
650 { // basic front-end board-draw function: takes care of everything that can be in square:
651 // piece, background, coordinate/count, marker dot
654 if (piece == EmptySquare) {
655 BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
657 pngDrawPiece(csBoardWindow, piece, square_color, x, y);
660 if(align) { // square carries inscription (coord or piece count)
662 cairo_text_extents_t te;
664 cr = cairo_create (csBoardWindow);
665 cairo_select_font_face (cr, "Sans",
666 CAIRO_FONT_SLANT_NORMAL,
667 CAIRO_FONT_WEIGHT_BOLD);
669 cairo_set_font_size (cr, squareSize/4);
670 // calculate where it goes
671 cairo_text_extents (cr, string, &te);
674 xx += squareSize - te.width - te.x_bearing - 1;
675 yy += squareSize - te.height - te.y_bearing - 1;
676 } else if (align == 2) {
677 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
678 } else if (align == 3) {
679 xx += squareSize - te.width -te.x_bearing - 1;
680 yy += -te.y_bearing + 3;
681 } else if (align == 4) {
682 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
685 cairo_move_to (cr, xx-1, yy);
686 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
687 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
688 cairo_show_text (cr, string);
692 if(marker) { // print fat marker dot, if requested
693 DoDrawDot(csBoardWindow, marker, x + squareSize/4, y+squareSize/4, squareSize/2);
697 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
699 /* Masks for XPM pieces. Black and white pieces can have
700 different shapes, but in the interest of retaining my
701 sanity pieces must have the same outline on both light
702 and dark squares, and all pieces must use the same
703 background square colors/images. */
705 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
708 InitAnimState (AnimNr anr)
710 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
711 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
712 c_animBufs[anr+4] = csBoardWindow;
713 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
714 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
721 InitAnimState(Player);
725 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
727 static cairo_t *pieceSource;
728 pieceSource = cairo_create (dest);
729 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
730 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
731 else cairo_paint(pieceSource);
732 cairo_destroy (pieceSource);
736 InsertPiece (AnimNr anr, ChessSquare piece)
738 CairoOverlayPiece(piece, c_animBufs[anr]);
742 DrawBlank (AnimNr anr, int x, int y, int startColor)
744 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
747 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
748 int srcX, int srcY, int width, int height, int destX, int destY)
750 cairo_t *cr = cairo_create (c_animBufs[anr+destBuf]);
751 cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY);
752 cairo_rectangle (cr, destX, destY, width, height);
755 if(c_animBufs[anr+destBuf] == csBoardWindow)
756 GraphExpose(currBoard, destX, destY, squareSize, squareSize);
760 SetDragPiece (AnimNr anr, ChessSquare piece)
764 /* [AS] Arrow highlighting support */
767 DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr)
771 cr = cairo_create (cs);
772 cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y);
774 cairo_line_to(cr, arrow[i].x, arrow[i].y);
776 if(appData.monoMode) { // should we always outline arrow?
777 cairo_line_to(cr, arrow[0].x, arrow[0].y);
778 SetPen(cr, 2, "#000000", 0);
779 cairo_stroke_preserve(cr);
781 SetPen(cr, 2, appData.highlightSquareColor, 0);
789 DrawPolygon (Pnt arrow[], int nr)
791 DoDrawPolygon(csBoardWindow, arrow, nr);
792 // if(!dual) DoDrawPolygon(csBoardBackup, arrow, nr);