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.
82 #include "pixmaps/pixmaps.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 LoadSVG(char *dir, int color, int piece)
263 RsvgHandle *svg=NULL;
264 RsvgDimensionData svg_dimensions;
265 GError **svgerror=NULL;
266 cairo_surface_t *img;
269 snprintf(buf, MSG_SIZ, "%s/%s%s.svg", dir, color ? "Black" : "White", pngPieceNames[piece]);
271 if(svg = rsvg_handle_new_from_file(buf,svgerror)) {
273 rsvg_handle_get_dimensions(svg, &svg_dimensions);
274 img = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, squareSize, squareSize);
276 cr = cairo_create(img);
277 cairo_scale(cr, squareSize/(double) svg_dimensions.width, squareSize/(double) svg_dimensions.height);
278 rsvg_handle_render_cairo(svg, cr);
279 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
280 if(pngPieceImages[color][piece]) cairo_surface_destroy(pngPieceImages[color][piece]);
281 pngPieceImages[color][piece] = img;
284 rsvg_handle_close (svg,NULL);
292 ScaleOnePiece (int color, int piece)
296 cairo_surface_t *img, *cs;
301 if(*appData.svgDirectory) { // try to freshly render svg pieces first, always from file, to supply the source bitmap
302 LoadSVG(appData.svgDirectory, color, piece);
305 if((img = pngPieceImages[color][piece]) == NULL) { // if PNG file for this piece was not yet read, read it now and store it
306 if(!*appData.pieceDirectory) img = ConvertPixmap(color, piece); else {
307 snprintf(buf, MSG_SIZ, "%s/%s%s.png", appData.pieceDirectory, color ? "Black" : "White", pngPieceNames[piece]);
308 img = cairo_image_surface_create_from_png (buf);
309 if(cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) img = ConvertPixmap(color, piece);
312 pngPieceImages[color][piece] = img;
315 // create new bitmap to hold scaled piece image (and remove any old)
316 if(pngPieceBitmaps2[color][piece]) cairo_surface_destroy (pngPieceBitmaps2[color][piece]);
317 pngPieceBitmaps2[color][piece] = cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
318 if(piece <= WhiteKing) pngPieceBitmaps[color][piece] = cs;
320 // scaled copying of the raw png image
321 cr = cairo_create(cs);
322 w = cairo_image_surface_get_width (img);
323 h = cairo_image_surface_get_height (img);
324 cairo_scale(cr, squareSize/w, squareSize/h);
325 cairo_set_source_surface (cr, img, 0, 0);
329 if(!appData.trueColors || !*appData.pieceDirectory && !appData.svgDirectory) { // operate on bitmap to color it (king-size hack...)
330 int stride = cairo_image_surface_get_stride(cs)/4;
331 int *buf = (int *) cairo_image_surface_get_data(cs);
333 sscanf(color ? appData.blackPieceColor+1 : appData.whitePieceColor+1, "%x", &p); // replacement color
334 cairo_surface_flush(cs);
335 for(i=0; i<squareSize; i++) for(j=0; j<squareSize; j++) {
338 unsigned int c = buf[i*stride + j];
339 a = c >> 24; r = c >> 16 & 255; // alpha and red, where red is the 'white' weight, since white is #FFFFCC in the source images
340 f = (color ? a - r : r)/255.; // fraction of black or white in the mix that has to be replaced
341 buf[i*stride + j] = c & 0xFF000000; // alpha channel is kept at same opacity
342 buf[i*stride + j] += ((int)(f*(p&0xFF0000)) & 0xFF0000) + ((int)(f*(p&0xFF00)) & 0xFF00) + (int)(f*(p&0xFF)); // add desired fraction of new color
343 if(color) buf[i*stride + j] += r | r << 8 | r << 16; // details on black pieces get their weight added in pure white
345 cairo_surface_mark_dirty(cs);
354 for(p=0; pngPieceNames[p]; p++) {
362 { // [HGM] taken out of main
364 CreatePNGBoard(appData.liteBackTextureFile, 1);
365 CreatePNGBoard(appData.darkBackTextureFile, 0);
369 InitDrawingParams (int reloadPieces)
374 for(i=0; i<2; i++) for(p=0; p<BlackPawn+4; p++) {
375 if(pngPieceImages[i][p]) cairo_surface_destroy(pngPieceImages[i][p]);
376 pngPieceImages[i][p] = NULL;
381 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
384 Color (char *col, int n)
387 sscanf(col, "#%x", &c);
393 SetPen (cairo_t *cr, float w, char *col, int dash)
395 static const double dotted[] = {4.0, 4.0};
396 static int len = sizeof(dotted) / sizeof(dotted[0]);
397 cairo_set_line_width (cr, w);
398 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
399 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
402 void DrawSeekAxis( int x, int y, int xTo, int yTo )
407 cr = cairo_create (csBoardWindow);
409 cairo_move_to (cr, x, y);
410 cairo_line_to(cr, xTo, yTo );
412 SetPen(cr, 2, "#000000", 0);
417 GraphExpose(currBoard, x-1, yTo-1, xTo-x+2, y-yTo+2);
420 void DrawSeekBackground( int left, int top, int right, int bottom )
422 cairo_t *cr = cairo_create (csBoardWindow);
424 cairo_rectangle (cr, left, top, right-left, bottom-top);
426 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
431 GraphExpose(currBoard, left, top, right-left, bottom-top);
434 void DrawSeekText(char *buf, int x, int y)
436 cairo_t *cr = cairo_create (csBoardWindow);
438 cairo_select_font_face (cr, "Sans",
439 CAIRO_FONT_SLANT_NORMAL,
440 CAIRO_FONT_WEIGHT_NORMAL);
442 cairo_set_font_size (cr, 12.0);
444 cairo_move_to (cr, x, y+4);
445 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
446 cairo_show_text( cr, buf);
450 GraphExpose(currBoard, x-5, y-10, 60, 15);
453 void DrawSeekDot(int x, int y, int colorNr)
455 cairo_t *cr = cairo_create (csBoardWindow);
456 int square = colorNr & 0x80;
460 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
462 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
464 SetPen(cr, 2, "#000000", 0);
465 cairo_stroke_preserve(cr);
467 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
468 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
469 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
475 GraphExpose(currBoard, x-squareSize/8, y-squareSize/8, 2*(squareSize/8), 2*(squareSize/8));
479 InitDrawingHandle (Option *opt)
481 csBoardWindow = DRAWABLE(opt);
489 if (lineGap == 0) return;
491 /* [HR] Split this into 2 loops for non-square boards. */
493 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
494 gridSegments[i].x1 = 0;
496 lineGap + BOARD_WIDTH * (squareSize + lineGap);
497 gridSegments[i].y1 = gridSegments[i].y2
498 = lineGap / 2 + (i * (squareSize + lineGap));
501 for (j = 0; j < BOARD_WIDTH + 1; j++) {
502 gridSegments[j + i].y1 = 0;
503 gridSegments[j + i].y2 =
504 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
505 gridSegments[j + i].x1 = gridSegments[j + i].x2
506 = lineGap / 2 + (j * (squareSize + lineGap));
513 /* draws a grid starting around Nx, Ny squares starting at x,y */
515 float odd = (lineGap & 1)/2.;
519 cr = cairo_create (csBoardWindow);
521 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
522 SetPen(cr, lineGap, "#000000", 0);
525 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
527 cairo_move_to (cr, gridSegments[i].x1 + odd, gridSegments[i].y1 + odd);
528 cairo_line_to (cr, gridSegments[i].x2 + odd, gridSegments[i].y2 + odd);
539 DrawBorder (int x, int y, int type, int odd)
545 case 0: col = "#000000"; break;
546 case 1: col = appData.highlightSquareColor; break;
547 case 2: col = appData.premoveHighlightColor; break;
549 cr = cairo_create(csBoardWindow);
550 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
551 cairo_rectangle(cr, x+odd/2., y+odd/2., squareSize+lineGap, squareSize+lineGap);
552 SetPen(cr, lineGap, col, 0);
555 GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap+odd, squareSize+2*lineGap+odd);
559 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
561 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
562 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
564 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
565 if(textureW[kind] < W*squareSize)
566 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
568 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
569 if(textureH[kind] < H*squareSize)
570 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
572 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
577 DrawLogo (Option *opt, void *logo)
579 cairo_surface_t *img;
583 if(!logo || !opt) return;
584 img = cairo_image_surface_create_from_png (logo);
585 w = cairo_image_surface_get_width (img);
586 h = cairo_image_surface_get_height (img);
587 cr = cairo_create(DRAWABLE(opt));
588 cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
589 cairo_set_source_surface (cr, img, 0, 0);
592 cairo_surface_destroy (img);
593 GraphExpose(opt, 0, 0, appData.logoSize, appData.logoSize/2);
597 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
598 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
602 cr = cairo_create (dest);
604 if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) {
605 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
606 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
607 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
610 } else { // evenly colored squares
613 case 0: col = appData.darkSquareColor; break;
614 case 1: col = appData.lightSquareColor; break;
615 case 2: col = "#000000"; break;
617 SetPen(cr, 2.0, col, 0);
618 cairo_rectangle (cr, fac*x, fac*y, squareSize, squareSize);
619 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
626 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
631 if ((int)piece < (int) BlackPawn) {
637 if(appData.upsideDown && flipView) { p += p < BlackPawn ? BlackPawn : -BlackPawn; }// swap white and black pieces
638 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
639 cr = cairo_create (dest);
640 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
646 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
650 cr = cairo_create(cs);
651 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
652 if(appData.monoMode) {
653 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
654 cairo_stroke_preserve(cr);
655 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
657 SetPen(cr, 2, marker == 2 ? "#FF0000" : "#FFFF00", 0);
665 DrawDot (int marker, int x, int y, int r)
666 { // used for atomic captures; no need to draw on backup
667 DoDrawDot(csBoardWindow, marker, x, y, r);
668 GraphExpose(currBoard, x-r, y-r, 2*r, 2*r);
672 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *string, int align)
673 { // basic front-end board-draw function: takes care of everything that can be in square:
674 // piece, background, coordinate/count, marker dot
677 if (piece == EmptySquare) {
678 BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
680 pngDrawPiece(csBoardWindow, piece, square_color, x, y);
683 if(align) { // square carries inscription (coord or piece count)
685 cairo_text_extents_t te;
687 cr = cairo_create (csBoardWindow);
688 cairo_select_font_face (cr, "Sans",
689 CAIRO_FONT_SLANT_NORMAL,
690 CAIRO_FONT_WEIGHT_BOLD);
692 cairo_set_font_size (cr, squareSize/4);
693 // calculate where it goes
694 cairo_text_extents (cr, string, &te);
697 xx += squareSize - te.width - te.x_bearing - 1;
698 yy += squareSize - te.height - te.y_bearing - 1;
699 } else if (align == 2) {
700 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
701 } else if (align == 3) {
702 xx += squareSize - te.width -te.x_bearing - 1;
703 yy += -te.y_bearing + 3;
704 } else if (align == 4) {
705 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
708 cairo_move_to (cr, xx-1, yy);
709 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
710 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
711 cairo_show_text (cr, string);
715 if(marker) { // print fat marker dot, if requested
716 DoDrawDot(csBoardWindow, marker, x + squareSize/4, y+squareSize/4, squareSize/2);
720 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
722 /* Masks for XPM pieces. Black and white pieces can have
723 different shapes, but in the interest of retaining my
724 sanity pieces must have the same outline on both light
725 and dark squares, and all pieces must use the same
726 background square colors/images. */
728 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
731 InitAnimState (AnimNr anr)
733 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
734 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
735 c_animBufs[anr+4] = csBoardWindow;
736 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
737 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
744 InitAnimState(Player);
748 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
750 static cairo_t *pieceSource;
751 pieceSource = cairo_create (dest);
752 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
753 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
754 else cairo_paint(pieceSource);
755 cairo_destroy (pieceSource);
759 InsertPiece (AnimNr anr, ChessSquare piece)
761 CairoOverlayPiece(piece, c_animBufs[anr]);
765 DrawBlank (AnimNr anr, int x, int y, int startColor)
767 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
770 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
771 int srcX, int srcY, int width, int height, int destX, int destY)
773 cairo_t *cr = cairo_create (c_animBufs[anr+destBuf]);
774 cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY);
775 cairo_rectangle (cr, destX, destY, width, height);
778 if(c_animBufs[anr+destBuf] == csBoardWindow)
779 GraphExpose(currBoard, destX, destY, squareSize, squareSize);
783 SetDragPiece (AnimNr anr, ChessSquare piece)
787 /* [AS] Arrow highlighting support */
790 DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr)
794 cr = cairo_create (cs);
795 cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y);
797 cairo_line_to(cr, arrow[i].x, arrow[i].y);
799 if(appData.monoMode) { // should we always outline arrow?
800 cairo_line_to(cr, arrow[0].x, arrow[0].y);
801 SetPen(cr, 2, "#000000", 0);
802 cairo_stroke_preserve(cr);
804 SetPen(cr, 2, appData.highlightSquareColor, 0);
812 DrawPolygon (Pnt arrow[], int nr)
814 DoDrawPolygon(csBoardWindow, arrow, nr);
815 // if(!dual) DoDrawPolygon(csBoardBackup, arrow, nr);