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)
360 for(i=0; i<2; i++) for(p=0; p<BlackPawn+4; p++) {
361 if(pngPieceImages[i][p]) cairo_surface_destroy(pngPieceImages[i][p]);
362 pngPieceImages[i][p] = NULL;
363 if(svgPieces[i][p]) rsvg_handle_close(svgPieces[i][p], NULL);
364 svgPieces[i][p] = NULL;
369 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
372 Color (char *col, int n)
375 sscanf(col, "#%x", &c);
381 SetPen (cairo_t *cr, float w, char *col, int dash)
383 static const double dotted[] = {4.0, 4.0};
384 static int len = sizeof(dotted) / sizeof(dotted[0]);
385 cairo_set_line_width (cr, w);
386 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
387 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
390 void DrawSeekAxis( int x, int y, int xTo, int yTo )
395 cr = cairo_create (csBoardWindow);
397 cairo_move_to (cr, x, y);
398 cairo_line_to(cr, xTo, yTo );
400 SetPen(cr, 2, "#000000", 0);
405 GraphExpose(currBoard, x-1, yTo-1, xTo-x+2, y-yTo+2);
408 void DrawSeekBackground( int left, int top, int right, int bottom )
410 cairo_t *cr = cairo_create (csBoardWindow);
412 cairo_rectangle (cr, left, top, right-left, bottom-top);
414 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
419 GraphExpose(currBoard, left, top, right-left, bottom-top);
422 void DrawSeekText(char *buf, int x, int y)
424 cairo_t *cr = cairo_create (csBoardWindow);
426 cairo_select_font_face (cr, "Sans",
427 CAIRO_FONT_SLANT_NORMAL,
428 CAIRO_FONT_WEIGHT_NORMAL);
430 cairo_set_font_size (cr, 12.0);
432 cairo_move_to (cr, x, y+4);
433 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
434 cairo_show_text( cr, buf);
438 GraphExpose(currBoard, x-5, y-10, 60, 15);
441 void DrawSeekDot(int x, int y, int colorNr)
443 cairo_t *cr = cairo_create (csBoardWindow);
444 int square = colorNr & 0x80;
448 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
450 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
452 SetPen(cr, 2, "#000000", 0);
453 cairo_stroke_preserve(cr);
455 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
456 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
457 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
463 GraphExpose(currBoard, x-squareSize/8, y-squareSize/8, 2*(squareSize/8), 2*(squareSize/8));
467 InitDrawingHandle (Option *opt)
469 csBoardWindow = DRAWABLE(opt);
477 if (lineGap == 0) return;
479 /* [HR] Split this into 2 loops for non-square boards. */
481 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
482 gridSegments[i].x1 = 0;
484 lineGap + BOARD_WIDTH * (squareSize + lineGap);
485 gridSegments[i].y1 = gridSegments[i].y2
486 = lineGap / 2 + (i * (squareSize + lineGap));
489 for (j = 0; j < BOARD_WIDTH + 1; j++) {
490 gridSegments[j + i].y1 = 0;
491 gridSegments[j + i].y2 =
492 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
493 gridSegments[j + i].x1 = gridSegments[j + i].x2
494 = lineGap / 2 + (j * (squareSize + lineGap));
501 /* draws a grid starting around Nx, Ny squares starting at x,y */
503 float odd = (lineGap & 1)/2.;
507 cr = cairo_create (csBoardWindow);
509 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
510 SetPen(cr, lineGap, "#000000", 0);
513 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
515 cairo_move_to (cr, gridSegments[i].x1 + odd, gridSegments[i].y1 + odd);
516 cairo_line_to (cr, gridSegments[i].x2 + odd, gridSegments[i].y2 + odd);
527 DrawBorder (int x, int y, int type, int odd)
533 case 0: col = "#000000"; break;
534 case 1: col = appData.highlightSquareColor; break;
535 case 2: col = appData.premoveHighlightColor; break;
537 cr = cairo_create(csBoardWindow);
538 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
539 cairo_rectangle(cr, x+odd/2., y+odd/2., squareSize+lineGap, squareSize+lineGap);
540 SetPen(cr, lineGap, col, 0);
543 GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap+odd, squareSize+2*lineGap+odd);
547 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
549 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
550 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
552 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
553 if(textureW[kind] < W*squareSize)
554 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
556 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
557 if(textureH[kind] < H*squareSize)
558 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
560 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
565 DrawLogo (Option *opt, void *logo)
567 cairo_surface_t *img;
571 if(!logo || !opt) return;
572 img = cairo_image_surface_create_from_png (logo);
573 w = cairo_image_surface_get_width (img);
574 h = cairo_image_surface_get_height (img);
575 cr = cairo_create(DRAWABLE(opt));
576 cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
577 cairo_set_source_surface (cr, img, 0, 0);
580 cairo_surface_destroy (img);
581 GraphExpose(opt, 0, 0, appData.logoSize, appData.logoSize/2);
585 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
586 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
590 cr = cairo_create (dest);
592 if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) {
593 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
594 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
595 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
598 } else { // evenly colored squares
601 case 0: col = appData.darkSquareColor; break;
602 case 1: col = appData.lightSquareColor; break;
603 case 2: col = "#000000"; break;
605 SetPen(cr, 2.0, col, 0);
606 cairo_rectangle (cr, fac*x, fac*y, squareSize, squareSize);
607 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
614 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
619 if ((int)piece < (int) BlackPawn) {
625 if(appData.upsideDown && flipView) { p += p < BlackPawn ? BlackPawn : -BlackPawn; }// swap white and black pieces
626 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
627 cr = cairo_create (dest);
628 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
634 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
638 cr = cairo_create(cs);
639 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
640 if(appData.monoMode) {
641 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
642 cairo_stroke_preserve(cr);
643 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
645 SetPen(cr, 2, marker == 2 ? "#FF0000" : "#FFFF00", 0);
653 DrawDot (int marker, int x, int y, int r)
654 { // used for atomic captures; no need to draw on backup
655 DoDrawDot(csBoardWindow, marker, x, y, r);
656 GraphExpose(currBoard, x-r, y-r, 2*r, 2*r);
660 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *string, int align)
661 { // basic front-end board-draw function: takes care of everything that can be in square:
662 // piece, background, coordinate/count, marker dot
665 if (piece == EmptySquare) {
666 BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
668 pngDrawPiece(csBoardWindow, piece, square_color, x, y);
671 if(align) { // square carries inscription (coord or piece count)
673 cairo_text_extents_t te;
675 cr = cairo_create (csBoardWindow);
676 cairo_select_font_face (cr, "Sans",
677 CAIRO_FONT_SLANT_NORMAL,
678 CAIRO_FONT_WEIGHT_BOLD);
680 cairo_set_font_size (cr, squareSize/4);
681 // calculate where it goes
682 cairo_text_extents (cr, string, &te);
685 xx += squareSize - te.width - te.x_bearing - 1;
686 yy += squareSize - te.height - te.y_bearing - 1;
687 } else if (align == 2) {
688 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
689 } else if (align == 3) {
690 xx += squareSize - te.width -te.x_bearing - 1;
691 yy += -te.y_bearing + 3;
692 } else if (align == 4) {
693 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
696 cairo_move_to (cr, xx-1, yy);
697 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
698 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
699 cairo_show_text (cr, string);
703 if(marker) { // print fat marker dot, if requested
704 DoDrawDot(csBoardWindow, marker, x + squareSize/4, y+squareSize/4, squareSize/2);
708 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
710 /* Masks for XPM pieces. Black and white pieces can have
711 different shapes, but in the interest of retaining my
712 sanity pieces must have the same outline on both light
713 and dark squares, and all pieces must use the same
714 background square colors/images. */
716 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
719 InitAnimState (AnimNr anr)
721 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
722 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
723 c_animBufs[anr+4] = csBoardWindow;
724 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
725 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
732 InitAnimState(Player);
736 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
738 static cairo_t *pieceSource;
739 pieceSource = cairo_create (dest);
740 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
741 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
742 else cairo_paint(pieceSource);
743 cairo_destroy (pieceSource);
747 InsertPiece (AnimNr anr, ChessSquare piece)
749 CairoOverlayPiece(piece, c_animBufs[anr]);
753 DrawBlank (AnimNr anr, int x, int y, int startColor)
755 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
758 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
759 int srcX, int srcY, int width, int height, int destX, int destY)
761 cairo_t *cr = cairo_create (c_animBufs[anr+destBuf]);
762 cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY);
763 cairo_rectangle (cr, destX, destY, width, height);
766 if(c_animBufs[anr+destBuf] == csBoardWindow)
767 GraphExpose(currBoard, destX, destY, squareSize, squareSize);
771 SetDragPiece (AnimNr anr, ChessSquare piece)
775 /* [AS] Arrow highlighting support */
778 DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr)
782 cr = cairo_create (cs);
783 cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y);
785 cairo_line_to(cr, arrow[i].x, arrow[i].y);
787 if(appData.monoMode) { // should we always outline arrow?
788 cairo_line_to(cr, arrow[0].x, arrow[0].y);
789 SetPen(cr, 2, "#000000", 0);
790 cairo_stroke_preserve(cr);
792 SetPen(cr, 2, appData.highlightSquareColor, 0);
800 DrawPolygon (Pnt arrow[], int nr)
802 DoDrawPolygon(csBoardWindow, arrow, nr);
803 // if(!dual) DoDrawPolygon(csBoardBackup, arrow, nr);