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 RsvgHandle *svgPieces[2][(int)BlackPawn+4]; // vector pieces in store
119 static cairo_surface_t *pngBoardBitmap[2];
120 int useTexture, textureW[2], textureH[2];
122 #define pieceToSolid(piece) &pieceBitmap[SOLID][(piece) % (int)BlackPawn]
123 #define pieceToOutline(piece) &pieceBitmap[OUTLINE][(piece) % (int)BlackPawn]
125 #define White(piece) ((int)(piece) < (int)BlackPawn)
129 } gridSegments[BOARD_RANKS + BOARD_FILES + 2];
137 currBoard = (dual ? &mainOptions[W_BOARD] : &dualOptions[3]);
138 csBoardWindow = DRAWABLE(currBoard);
141 #define BoardSize int
143 InitDrawingSizes (BoardSize boardSize, int flags)
144 { // [HGM] resize is functional now, but for board format changes only (nr of ranks, files)
145 int boardWidth, boardHeight;
147 static int oldWidth, oldHeight;
148 static VariantClass oldVariant;
149 static int oldMono = -1, oldTwoBoards = 0;
150 extern Widget formWidget;
152 if(!formWidget) return;
154 if(oldTwoBoards && !twoBoards) PopDown(DummyDlg);
155 oldTwoBoards = twoBoards;
157 if(appData.overrideLineGap >= 0) lineGap = appData.overrideLineGap;
158 boardWidth = lineGap + BOARD_WIDTH * (squareSize + lineGap);
159 boardHeight = lineGap + BOARD_HEIGHT * (squareSize + lineGap);
161 if(boardWidth != oldWidth || boardHeight != oldHeight) { // do resizing stuff only if size actually changed
163 oldWidth = boardWidth; oldHeight = boardHeight;
167 * Inhibit shell resizing.
169 ResizeBoardWindow(boardWidth, boardHeight, 0);
174 // [HGM] pieces: tailor piece bitmaps to needs of specific variant
177 if(gameInfo.variant != oldVariant) { // and only if variant changed
181 for(p=0; p<=(int)WhiteKing; p++)
182 pngPieceBitmaps[i][p] = pngPieceBitmaps2[i][p]; // defaults
183 if(gameInfo.variant == VariantShogi) {
184 pngPieceBitmaps[i][(int)WhiteCannon] = pngPieceBitmaps2[i][(int)WhiteKing+1];
185 pngPieceBitmaps[i][(int)WhiteNightrider] = pngPieceBitmaps2[i][(int)WhiteKing+2];
186 pngPieceBitmaps[i][(int)WhiteSilver] = pngPieceBitmaps2[i][(int)WhiteKing+3];
187 pngPieceBitmaps[i][(int)WhiteGrasshopper] = pngPieceBitmaps2[i][(int)WhiteKing+4];
188 pngPieceBitmaps[i][(int)WhiteQueen] = pngPieceBitmaps2[i][(int)WhiteLance];
191 if(gameInfo.variant == VariantGothic) {
192 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteSilver];
195 if(gameInfo.variant == VariantSChess) {
196 pngPieceBitmaps[i][(int)WhiteAngel] = pngPieceBitmaps2[i][(int)WhiteFalcon];
197 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteAlfil];
200 oldMono = -10; // kludge to force recreation of animation masks
201 oldVariant = gameInfo.variant;
204 oldMono = appData.monoMode;
208 CreatePNGBoard (char *s, int kind)
210 if(!appData.useBitmaps || s == NULL || *s == 0 || *s == '*') { useTexture &= ~(kind+1); return; }
211 if(strstr(s, ".png")) {
212 cairo_surface_t *img = cairo_image_surface_create_from_png (s);
214 useTexture |= kind + 1; pngBoardBitmap[kind] = img;
215 textureW[kind] = cairo_image_surface_get_width (img);
216 textureH[kind] = cairo_image_surface_get_height (img);
221 char *pngPieceNames[] = // must be in same order as internal piece encoding
222 { "Pawn", "Knight", "Bishop", "Rook", "Queen", "Advisor", "Elephant", "Archbishop", "Marshall", "Gold", "Commoner",
223 "Canon", "Nightrider", "CrownedBishop", "CrownedRook", "Princess", "Chancellor", "Hawk", "Lance", "Cobra", "Unicorn", "King",
224 "GoldKnight", "GoldLance", "GoldPawn", "GoldSilver", NULL
228 ConvertPixmap (int color, int piece)
230 int i, j, stride, f, colcode[10], w, b;
232 cairo_surface_t *res;
233 XpmPieces *p = builtInXpms + 10;
234 char **pixels = p->xpm[piece % BlackPawn][2*color];
236 sscanf(pixels[0], "%*d %*d %d", &f);
237 sscanf(appData.whitePieceColor+1, "%x", &w);
238 sscanf(appData.blackPieceColor+1, "%x", &b);
239 res = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, p->size, p->size);
240 stride = cairo_image_surface_get_stride(res);
241 buf = (int *) cairo_image_surface_get_data(res);
243 ch[i] = pixels[i+1][0];
245 if(strstr(pixels[i+1], "black")) colcode[i] = 0xFF000000; // 0xFF000000 + (color ? b : 0);
246 if(strstr(pixels[i+1], "white")) colcode[i] = 0xFFFFFFCC; // 0xFF000000 + w;
248 for(i=0; i<p->size; i++) {
249 for(j=0; j<p->size; j++) {
250 char c = pixels[i+f+1][j];
252 for(k=0; ch[k] != c && k < f; k++);
253 buf[i*p->size + j] = colcode[k];
256 cairo_surface_mark_dirty(res);
261 LoadSVG (char *dir, int color, int piece)
264 RsvgHandle *svg=NULL;
265 RsvgDimensionData svg_dimensions;
266 GError **svgerror=NULL;
267 cairo_surface_t *img;
270 snprintf(buf, MSG_SIZ, "%s/%s%s.svg", dir, color ? "Black" : "White", pngPieceNames[piece]);
272 if(svg = rsvg_handle_new_from_file(buf,svgerror)) {
274 rsvg_handle_get_dimensions(svg, &svg_dimensions);
275 img = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, squareSize, squareSize);
277 cr = cairo_create(img);
278 cairo_scale(cr, squareSize/(double) svg_dimensions.width, squareSize/(double) svg_dimensions.height);
279 rsvg_handle_render_cairo(svg, cr);
280 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
281 if(pngPieceImages[color][piece]) cairo_surface_destroy(pngPieceImages[color][piece]);
282 pngPieceImages[color][piece] = img;
292 ScaleOnePiece (int color, int piece)
296 cairo_surface_t *img, *cs;
301 if(!svgPieces[color][piece] && *appData.svgDirectory) { // try to freshly render svg pieces first, always from file, to supply the source bitmap
302 svgPieces[color][piece] = 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;
377 if(svgPieces[i][p]) rsvg_handle_close(svgPieces[i][p], NULL);
378 svgPieces[i][p] = NULL;
383 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
386 Color (char *col, int n)
389 sscanf(col, "#%x", &c);
395 SetPen (cairo_t *cr, float w, char *col, int dash)
397 static const double dotted[] = {4.0, 4.0};
398 static int len = sizeof(dotted) / sizeof(dotted[0]);
399 cairo_set_line_width (cr, w);
400 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
401 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
404 void DrawSeekAxis( int x, int y, int xTo, int yTo )
409 cr = cairo_create (csBoardWindow);
411 cairo_move_to (cr, x, y);
412 cairo_line_to(cr, xTo, yTo );
414 SetPen(cr, 2, "#000000", 0);
419 GraphExpose(currBoard, x-1, yTo-1, xTo-x+2, y-yTo+2);
422 void DrawSeekBackground( int left, int top, int right, int bottom )
424 cairo_t *cr = cairo_create (csBoardWindow);
426 cairo_rectangle (cr, left, top, right-left, bottom-top);
428 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
433 GraphExpose(currBoard, left, top, right-left, bottom-top);
436 void DrawSeekText(char *buf, int x, int y)
438 cairo_t *cr = cairo_create (csBoardWindow);
440 cairo_select_font_face (cr, "Sans",
441 CAIRO_FONT_SLANT_NORMAL,
442 CAIRO_FONT_WEIGHT_NORMAL);
444 cairo_set_font_size (cr, 12.0);
446 cairo_move_to (cr, x, y+4);
447 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
448 cairo_show_text( cr, buf);
452 GraphExpose(currBoard, x-5, y-10, 60, 15);
455 void DrawSeekDot(int x, int y, int colorNr)
457 cairo_t *cr = cairo_create (csBoardWindow);
458 int square = colorNr & 0x80;
462 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
464 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
466 SetPen(cr, 2, "#000000", 0);
467 cairo_stroke_preserve(cr);
469 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
470 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
471 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
477 GraphExpose(currBoard, x-squareSize/8, y-squareSize/8, 2*(squareSize/8), 2*(squareSize/8));
481 InitDrawingHandle (Option *opt)
483 csBoardWindow = DRAWABLE(opt);
491 if (lineGap == 0) return;
493 /* [HR] Split this into 2 loops for non-square boards. */
495 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
496 gridSegments[i].x1 = 0;
498 lineGap + BOARD_WIDTH * (squareSize + lineGap);
499 gridSegments[i].y1 = gridSegments[i].y2
500 = lineGap / 2 + (i * (squareSize + lineGap));
503 for (j = 0; j < BOARD_WIDTH + 1; j++) {
504 gridSegments[j + i].y1 = 0;
505 gridSegments[j + i].y2 =
506 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
507 gridSegments[j + i].x1 = gridSegments[j + i].x2
508 = lineGap / 2 + (j * (squareSize + lineGap));
515 /* draws a grid starting around Nx, Ny squares starting at x,y */
517 float odd = (lineGap & 1)/2.;
521 cr = cairo_create (csBoardWindow);
523 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
524 SetPen(cr, lineGap, "#000000", 0);
527 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
529 cairo_move_to (cr, gridSegments[i].x1 + odd, gridSegments[i].y1 + odd);
530 cairo_line_to (cr, gridSegments[i].x2 + odd, gridSegments[i].y2 + odd);
541 DrawBorder (int x, int y, int type, int odd)
547 case 0: col = "#000000"; break;
548 case 1: col = appData.highlightSquareColor; break;
549 case 2: col = appData.premoveHighlightColor; break;
551 cr = cairo_create(csBoardWindow);
552 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
553 cairo_rectangle(cr, x+odd/2., y+odd/2., squareSize+lineGap, squareSize+lineGap);
554 SetPen(cr, lineGap, col, 0);
557 GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap+odd, squareSize+2*lineGap+odd);
561 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
563 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
564 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
566 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
567 if(textureW[kind] < W*squareSize)
568 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
570 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
571 if(textureH[kind] < H*squareSize)
572 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
574 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
579 DrawLogo (Option *opt, void *logo)
581 cairo_surface_t *img;
585 if(!logo || !opt) return;
586 img = cairo_image_surface_create_from_png (logo);
587 w = cairo_image_surface_get_width (img);
588 h = cairo_image_surface_get_height (img);
589 cr = cairo_create(DRAWABLE(opt));
590 cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
591 cairo_set_source_surface (cr, img, 0, 0);
594 cairo_surface_destroy (img);
595 GraphExpose(opt, 0, 0, appData.logoSize, appData.logoSize/2);
599 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
600 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
604 cr = cairo_create (dest);
606 if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) {
607 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
608 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
609 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
612 } else { // evenly colored squares
615 case 0: col = appData.darkSquareColor; break;
616 case 1: col = appData.lightSquareColor; break;
617 case 2: col = "#000000"; break;
619 SetPen(cr, 2.0, col, 0);
620 cairo_rectangle (cr, fac*x, fac*y, squareSize, squareSize);
621 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
628 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
633 if ((int)piece < (int) BlackPawn) {
639 if(appData.upsideDown && flipView) { p += p < BlackPawn ? BlackPawn : -BlackPawn; }// swap white and black pieces
640 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
641 cr = cairo_create (dest);
642 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
648 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
652 cr = cairo_create(cs);
653 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
654 if(appData.monoMode) {
655 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
656 cairo_stroke_preserve(cr);
657 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
659 SetPen(cr, 2, marker == 2 ? "#FF0000" : "#FFFF00", 0);
667 DrawDot (int marker, int x, int y, int r)
668 { // used for atomic captures; no need to draw on backup
669 DoDrawDot(csBoardWindow, marker, x, y, r);
670 GraphExpose(currBoard, x-r, y-r, 2*r, 2*r);
674 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *string, int align)
675 { // basic front-end board-draw function: takes care of everything that can be in square:
676 // piece, background, coordinate/count, marker dot
679 if (piece == EmptySquare) {
680 BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
682 pngDrawPiece(csBoardWindow, piece, square_color, x, y);
685 if(align) { // square carries inscription (coord or piece count)
687 cairo_text_extents_t te;
689 cr = cairo_create (csBoardWindow);
690 cairo_select_font_face (cr, "Sans",
691 CAIRO_FONT_SLANT_NORMAL,
692 CAIRO_FONT_WEIGHT_BOLD);
694 cairo_set_font_size (cr, squareSize/4);
695 // calculate where it goes
696 cairo_text_extents (cr, string, &te);
699 xx += squareSize - te.width - te.x_bearing - 1;
700 yy += squareSize - te.height - te.y_bearing - 1;
701 } else if (align == 2) {
702 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
703 } else if (align == 3) {
704 xx += squareSize - te.width -te.x_bearing - 1;
705 yy += -te.y_bearing + 3;
706 } else if (align == 4) {
707 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
710 cairo_move_to (cr, xx-1, yy);
711 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
712 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
713 cairo_show_text (cr, string);
717 if(marker) { // print fat marker dot, if requested
718 DoDrawDot(csBoardWindow, marker, x + squareSize/4, y+squareSize/4, squareSize/2);
722 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
724 /* Masks for XPM pieces. Black and white pieces can have
725 different shapes, but in the interest of retaining my
726 sanity pieces must have the same outline on both light
727 and dark squares, and all pieces must use the same
728 background square colors/images. */
730 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
733 InitAnimState (AnimNr anr)
735 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
736 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
737 c_animBufs[anr+4] = csBoardWindow;
738 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
739 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
746 InitAnimState(Player);
750 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
752 static cairo_t *pieceSource;
753 pieceSource = cairo_create (dest);
754 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
755 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
756 else cairo_paint(pieceSource);
757 cairo_destroy (pieceSource);
761 InsertPiece (AnimNr anr, ChessSquare piece)
763 CairoOverlayPiece(piece, c_animBufs[anr]);
767 DrawBlank (AnimNr anr, int x, int y, int startColor)
769 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
772 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
773 int srcX, int srcY, int width, int height, int destX, int destY)
775 cairo_t *cr = cairo_create (c_animBufs[anr+destBuf]);
776 cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY);
777 cairo_rectangle (cr, destX, destY, width, height);
780 if(c_animBufs[anr+destBuf] == csBoardWindow)
781 GraphExpose(currBoard, destX, destY, squareSize, squareSize);
785 SetDragPiece (AnimNr anr, ChessSquare piece)
789 /* [AS] Arrow highlighting support */
792 DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr)
796 cr = cairo_create (cs);
797 cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y);
799 cairo_line_to(cr, arrow[i].x, arrow[i].y);
801 if(appData.monoMode) { // should we always outline arrow?
802 cairo_line_to(cr, arrow[0].x, arrow[0].y);
803 SetPen(cr, 2, "#000000", 0);
804 cairo_stroke_preserve(cr);
806 SetPen(cr, 2, appData.highlightSquareColor, 0);
814 DrawPolygon (Pnt arrow[], int nr)
816 DoDrawPolygon(csBoardWindow, arrow, nr);
817 // if(!dual) DoDrawPolygon(csBoardBackup, arrow, nr);