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 ExposeRedraw (Option *graph, int x, int y, int w, int h)
205 { // copy a selected part of the buffer bitmap to the display
206 cairo_t *cr = cairo_create((cairo_surface_t *) graph->textValue);
207 cairo_set_source_surface(cr, (cairo_surface_t *) graph->choice, 0, 0);
208 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
209 cairo_rectangle(cr, x, y, w, h);
215 CreatePNGBoard (char *s, int kind)
217 if(!appData.useBitmaps || s == NULL || *s == 0 || *s == '*') { useTexture &= ~(kind+1); return; }
218 if(strstr(s, ".png")) {
219 cairo_surface_t *img = cairo_image_surface_create_from_png (s);
221 useTexture |= kind + 1; pngBoardBitmap[kind] = img;
222 textureW[kind] = cairo_image_surface_get_width (img);
223 textureH[kind] = cairo_image_surface_get_height (img);
228 char *pngPieceNames[] = // must be in same order as internal piece encoding
229 { "Pawn", "Knight", "Bishop", "Rook", "Queen", "Advisor", "Elephant", "Archbishop", "Marshall", "Gold", "Commoner",
230 "Canon", "Nightrider", "CrownedBishop", "CrownedRook", "Princess", "Chancellor", "Hawk", "Lance", "Cobra", "Unicorn", "King",
231 "GoldKnight", "GoldLance", "GoldPawn", "GoldSilver", NULL
235 LoadSVG (char *dir, int color, int piece)
238 RsvgHandle *svg=svgPieces[color][piece];
239 RsvgDimensionData svg_dimensions;
240 GError **svgerror=NULL;
241 cairo_surface_t *img;
244 snprintf(buf, MSG_SIZ, "%s/%s%s.svg", dir, color ? "Black" : "White", pngPieceNames[piece]);
246 if(svg || *dir && (svg = rsvg_handle_new_from_file(buf,svgerror))) {
248 rsvg_handle_get_dimensions(svg, &svg_dimensions);
249 img = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, squareSize, squareSize);
251 cr = cairo_create(img);
252 cairo_scale(cr, squareSize/(double) svg_dimensions.width, squareSize/(double) svg_dimensions.height);
253 rsvg_handle_render_cairo(svg, cr);
254 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
255 if(pngPieceImages[color][piece]) cairo_surface_destroy(pngPieceImages[color][piece]);
256 pngPieceImages[color][piece] = img;
266 ScaleOnePiece (int color, int piece)
270 cairo_surface_t *img, *cs;
275 if(!svgPieces[color][piece]) { // try to freshly render cached svg pieces first, to supply the source bitmap
276 svgPieces[color][piece] = LoadSVG("", color, piece); // this fills pngPieceImages if we had cached svg with bitmap of wanted size
279 if(!pngPieceImages[color][piece]) { // we don't have cached bitmap (implying we did not have cached svg)
280 if(*appData.pieceDirectory) { // user specified piece directory
281 snprintf(buf, MSG_SIZ, "%s/%s%s.png", appData.pieceDirectory, color ? "Black" : "White", pngPieceNames[piece]);
282 pngPieceImages[color][piece] = img = cairo_image_surface_create_from_png (buf); // try if there are png pieces there
283 if(cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) { // there were not
284 svgPieces[color][piece] = LoadSVG(appData.pieceDirectory, color, piece); // so try if he has svg there
289 if(!pngPieceImages[color][piece]) { // we still did not manage to acquire a piece bitmap
290 if(!(svgPieces[color][piece] = LoadSVG(SVGDIR, color, piece))) // try to fall back on installed svg
291 DisplayError(_("No default pieces installed\nSelect your own -pieceImageDirectory"), 0); // give up
294 img = pngPieceImages[color][piece];
296 // create new bitmap to hold scaled piece image (and remove any old)
297 if(pngPieceBitmaps2[color][piece]) cairo_surface_destroy (pngPieceBitmaps2[color][piece]);
298 pngPieceBitmaps2[color][piece] = cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
299 if(piece <= WhiteKing) pngPieceBitmaps[color][piece] = cs;
301 // scaled copying of the raw png image
302 cr = cairo_create(cs);
303 w = cairo_image_surface_get_width (img);
304 h = cairo_image_surface_get_height (img);
305 cairo_scale(cr, squareSize/w, squareSize/h);
306 cairo_set_source_surface (cr, img, 0, 0);
310 if(!appData.trueColors || !*appData.pieceDirectory) { // operate on bitmap to color it (king-size hack...)
311 int stride = cairo_image_surface_get_stride(cs)/4;
312 int *buf = (int *) cairo_image_surface_get_data(cs);
314 sscanf(color ? appData.blackPieceColor+1 : appData.whitePieceColor+1, "%x", &p); // replacement color
315 cairo_surface_flush(cs);
316 for(i=0; i<squareSize; i++) for(j=0; j<squareSize; j++) {
319 unsigned int c = buf[i*stride + j];
320 a = c >> 24; r = c >> 16 & 255; // alpha and red, where red is the 'white' weight, since white is #FFFFCC in the source images
321 f = (color ? a - r : r)/255.; // fraction of black or white in the mix that has to be replaced
322 buf[i*stride + j] = c & 0xFF000000; // alpha channel is kept at same opacity
323 buf[i*stride + j] += ((int)(f*(p&0xFF0000)) & 0xFF0000) + ((int)(f*(p&0xFF00)) & 0xFF00) + (int)(f*(p&0xFF)); // add desired fraction of new color
324 if(color) buf[i*stride + j] += r | r << 8 | r << 16; // details on black pieces get their weight added in pure white
325 if(appData.monoMode) {
326 if(a < 64) buf[i*stride + j] = 0; // if not opaque enough, totally transparent
327 else if(2*r < a) buf[i*stride + j] = 0xFF000000; // if not light enough, totally black
328 else buf[i*stride + j] = 0xFFFFFFFF; // otherwise white
331 cairo_surface_mark_dirty(cs);
340 for(p=0; pngPieceNames[p]; p++) {
348 { // [HGM] taken out of main
350 CreatePNGBoard(appData.liteBackTextureFile, 1);
351 CreatePNGBoard(appData.darkBackTextureFile, 0);
355 InitDrawingParams (int reloadPieces)
359 for(i=0; i<2; i++) for(p=0; p<BlackPawn+4; p++) {
360 if(pngPieceImages[i][p]) cairo_surface_destroy(pngPieceImages[i][p]);
361 pngPieceImages[i][p] = NULL;
362 if(svgPieces[i][p]) rsvg_handle_close(svgPieces[i][p], NULL);
363 svgPieces[i][p] = NULL;
368 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
371 Color (char *col, int n)
374 sscanf(col, "#%x", &c);
380 SetPen (cairo_t *cr, float w, char *col, int dash)
382 static const double dotted[] = {4.0, 4.0};
383 static int len = sizeof(dotted) / sizeof(dotted[0]);
384 cairo_set_line_width (cr, w);
385 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
386 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
389 void DrawSeekAxis( int x, int y, int xTo, int yTo )
394 cr = cairo_create (csBoardWindow);
396 cairo_move_to (cr, x, y);
397 cairo_line_to(cr, xTo, yTo );
399 SetPen(cr, 2, "#000000", 0);
404 GraphExpose(currBoard, x-1, yTo-1, xTo-x+2, y-yTo+2);
407 void DrawSeekBackground( int left, int top, int right, int bottom )
409 cairo_t *cr = cairo_create (csBoardWindow);
411 cairo_rectangle (cr, left, top, right-left, bottom-top);
413 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
418 GraphExpose(currBoard, left, top, right-left, bottom-top);
421 void DrawSeekText(char *buf, int x, int y)
423 cairo_t *cr = cairo_create (csBoardWindow);
425 cairo_select_font_face (cr, "Sans",
426 CAIRO_FONT_SLANT_NORMAL,
427 CAIRO_FONT_WEIGHT_NORMAL);
429 cairo_set_font_size (cr, 12.0);
431 cairo_move_to (cr, x, y+4);
432 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
433 cairo_show_text( cr, buf);
437 GraphExpose(currBoard, x-5, y-10, 60, 15);
440 void DrawSeekDot(int x, int y, int colorNr)
442 cairo_t *cr = cairo_create (csBoardWindow);
443 int square = colorNr & 0x80;
447 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
449 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
451 SetPen(cr, 2, "#000000", 0);
452 cairo_stroke_preserve(cr);
454 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
455 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
456 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
462 GraphExpose(currBoard, x-squareSize/8, y-squareSize/8, 2*(squareSize/8), 2*(squareSize/8));
466 InitDrawingHandle (Option *opt)
468 csBoardWindow = DRAWABLE(opt);
476 if (lineGap == 0) return;
478 /* [HR] Split this into 2 loops for non-square boards. */
480 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
481 gridSegments[i].x1 = 0;
483 lineGap + BOARD_WIDTH * (squareSize + lineGap);
484 gridSegments[i].y1 = gridSegments[i].y2
485 = lineGap / 2 + (i * (squareSize + lineGap));
488 for (j = 0; j < BOARD_WIDTH + 1; j++) {
489 gridSegments[j + i].y1 = 0;
490 gridSegments[j + i].y2 =
491 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
492 gridSegments[j + i].x1 = gridSegments[j + i].x2
493 = lineGap / 2 + (j * (squareSize + lineGap));
500 /* draws a grid starting around Nx, Ny squares starting at x,y */
502 float odd = (lineGap & 1)/2.;
506 cr = cairo_create (csBoardWindow);
508 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
509 SetPen(cr, lineGap, "#000000", 0);
512 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
514 cairo_move_to (cr, gridSegments[i].x1 + odd, gridSegments[i].y1 + odd);
515 cairo_line_to (cr, gridSegments[i].x2 + odd, gridSegments[i].y2 + odd);
526 DrawBorder (int x, int y, int type, int odd)
532 case 0: col = "#000000"; break;
533 case 1: col = appData.highlightSquareColor; break;
534 case 2: col = appData.premoveHighlightColor; break;
536 cr = cairo_create(csBoardWindow);
537 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
538 cairo_rectangle(cr, x+odd/2., y+odd/2., squareSize+lineGap, squareSize+lineGap);
539 SetPen(cr, lineGap, col, 0);
542 GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap+odd, squareSize+2*lineGap+odd);
546 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
548 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
549 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
551 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
552 if(textureW[kind] < W*squareSize)
553 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
555 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
556 if(textureH[kind] < H*squareSize)
557 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
559 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
564 DrawLogo (Option *opt, void *logo)
566 cairo_surface_t *img;
570 if(!logo || !opt) return;
571 img = cairo_image_surface_create_from_png (logo);
572 w = cairo_image_surface_get_width (img);
573 h = cairo_image_surface_get_height (img);
574 cr = cairo_create(DRAWABLE(opt));
575 cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
576 cairo_set_source_surface (cr, img, 0, 0);
579 cairo_surface_destroy (img);
580 GraphExpose(opt, 0, 0, appData.logoSize, appData.logoSize/2);
584 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
585 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
589 cr = cairo_create (dest);
591 if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) {
592 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
593 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
594 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
597 } else { // evenly colored squares
600 case 0: col = appData.darkSquareColor; break;
601 case 1: col = appData.lightSquareColor; break;
602 case 2: col = "#000000"; break;
604 SetPen(cr, 2.0, col, 0);
605 cairo_rectangle (cr, fac*x, fac*y, squareSize, squareSize);
606 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
613 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
618 if ((int)piece < (int) BlackPawn) {
624 if(appData.upsideDown && flipView) { p += p < BlackPawn ? BlackPawn : -BlackPawn; }// swap white and black pieces
625 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
626 cr = cairo_create (dest);
627 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
633 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
637 cr = cairo_create(cs);
638 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
639 if(appData.monoMode) {
640 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
641 cairo_stroke_preserve(cr);
642 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
644 SetPen(cr, 2, marker == 2 ? "#FF0000" : "#FFFF00", 0);
652 DrawDot (int marker, int x, int y, int r)
653 { // used for atomic captures; no need to draw on backup
654 DoDrawDot(csBoardWindow, marker, x, y, r);
655 GraphExpose(currBoard, x-r, y-r, 2*r, 2*r);
659 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *string, int align)
660 { // basic front-end board-draw function: takes care of everything that can be in square:
661 // piece, background, coordinate/count, marker dot
664 if (piece == EmptySquare) {
665 BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
667 pngDrawPiece(csBoardWindow, piece, square_color, x, y);
670 if(align) { // square carries inscription (coord or piece count)
672 cairo_text_extents_t te;
674 cr = cairo_create (csBoardWindow);
675 cairo_select_font_face (cr, "Sans",
676 CAIRO_FONT_SLANT_NORMAL,
677 CAIRO_FONT_WEIGHT_BOLD);
679 cairo_set_font_size (cr, squareSize/4);
680 // calculate where it goes
681 cairo_text_extents (cr, string, &te);
684 xx += squareSize - te.width - te.x_bearing - 1;
685 yy += squareSize - te.height - te.y_bearing - 1;
686 } else if (align == 2) {
687 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
688 } else if (align == 3) {
689 xx += squareSize - te.width -te.x_bearing - 1;
690 yy += -te.y_bearing + 3;
691 } else if (align == 4) {
692 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
695 cairo_move_to (cr, xx-1, yy);
696 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
697 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
698 cairo_show_text (cr, string);
702 if(marker) { // print fat marker dot, if requested
703 DoDrawDot(csBoardWindow, marker, x + squareSize/4, y+squareSize/4, squareSize/2);
707 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
709 /* Masks for XPM pieces. Black and white pieces can have
710 different shapes, but in the interest of retaining my
711 sanity pieces must have the same outline on both light
712 and dark squares, and all pieces must use the same
713 background square colors/images. */
715 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
718 InitAnimState (AnimNr anr)
720 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
721 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
722 c_animBufs[anr+4] = csBoardWindow;
723 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
724 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
731 InitAnimState(Player);
735 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
737 static cairo_t *pieceSource;
738 pieceSource = cairo_create (dest);
739 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
740 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
741 else cairo_paint(pieceSource);
742 cairo_destroy (pieceSource);
746 InsertPiece (AnimNr anr, ChessSquare piece)
748 CairoOverlayPiece(piece, c_animBufs[anr]);
752 DrawBlank (AnimNr anr, int x, int y, int startColor)
754 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
757 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
758 int srcX, int srcY, int width, int height, int destX, int destY)
760 cairo_t *cr = cairo_create (c_animBufs[anr+destBuf]);
761 cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY);
762 cairo_rectangle (cr, destX, destY, width, height);
765 if(c_animBufs[anr+destBuf] == csBoardWindow)
766 GraphExpose(currBoard, destX, destY, squareSize, squareSize);
770 SetDragPiece (AnimNr anr, ChessSquare piece)
774 /* [AS] Arrow highlighting support */
777 DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr)
781 cr = cairo_create (cs);
782 cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y);
784 cairo_line_to(cr, arrow[i].x, arrow[i].y);
786 if(appData.monoMode) { // should we always outline arrow?
787 cairo_line_to(cr, arrow[0].x, arrow[0].y);
788 SetPen(cr, 2, "#000000", 0);
789 cairo_stroke_preserve(cr);
791 SetPen(cr, 2, appData.highlightSquareColor, 0);
799 DrawPolygon (Pnt arrow[], int nr)
801 DoDrawPolygon(csBoardWindow, arrow, nr);
802 // if(!dual) DoDrawPolygon(csBoardBackup, arrow, nr);