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 */
80 #include "xevalgraph.h"
92 #define usleep(t) _sleep2(((t)+500)/1000)
96 # define _(s) gettext (s)
97 # define N_(s) gettext_noop (s)
105 Boolean cairoAnimate;
107 cairo_surface_t *csBoardWindow;
108 static cairo_surface_t *pngPieceImages[2][(int)BlackPawn+4]; // png 256 x 256 images
109 static cairo_surface_t *pngPieceBitmaps[2][(int)BlackPawn]; // scaled pieces as used
110 static cairo_surface_t *pngPieceBitmaps2[2][(int)BlackPawn+4]; // scaled pieces in store
111 static RsvgHandle *svgPieces[2][(int)BlackPawn+4]; // vector pieces in store
112 static cairo_surface_t *pngBoardBitmap[2];
113 int useTexture, textureW[2], textureH[2];
115 #define pieceToSolid(piece) &pieceBitmap[SOLID][(piece) % (int)BlackPawn]
116 #define pieceToOutline(piece) &pieceBitmap[OUTLINE][(piece) % (int)BlackPawn]
118 #define White(piece) ((int)(piece) < (int)BlackPawn)
122 } gridSegments[BOARD_RANKS + BOARD_FILES + 2];
130 currBoard = (dual ? &mainOptions[W_BOARD] : &dualOptions[3]);
131 csBoardWindow = DRAWABLE(currBoard);
135 SelectPieces(VariantClass v)
140 for(p=0; p<=(int)WhiteKing; p++)
141 pngPieceBitmaps[i][p] = pngPieceBitmaps2[i][p]; // defaults
142 if(v == VariantShogi) {
143 pngPieceBitmaps[i][(int)WhiteCannon] = pngPieceBitmaps2[i][(int)WhiteKing+1];
144 pngPieceBitmaps[i][(int)WhiteNightrider] = pngPieceBitmaps2[i][(int)WhiteKing+2];
145 pngPieceBitmaps[i][(int)WhiteSilver] = pngPieceBitmaps2[i][(int)WhiteKing+3];
146 pngPieceBitmaps[i][(int)WhiteGrasshopper] = pngPieceBitmaps2[i][(int)WhiteKing+4];
147 pngPieceBitmaps[i][(int)WhiteQueen] = pngPieceBitmaps2[i][(int)WhiteLance];
150 if(v == VariantGothic) {
151 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteSilver];
154 if(v == VariantSChess) {
155 pngPieceBitmaps[i][(int)WhiteAngel] = pngPieceBitmaps2[i][(int)WhiteFalcon];
156 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteAlfil];
161 #define BoardSize int
163 InitDrawingSizes (BoardSize boardSize, int flags)
164 { // [HGM] resize is functional now, but for board format changes only (nr of ranks, files)
165 int boardWidth, boardHeight;
166 static int oldWidth, oldHeight;
167 static VariantClass oldVariant;
168 static int oldMono = -1, oldTwoBoards = 0;
170 if(!mainOptions[W_BOARD].handle) return;
172 if(oldTwoBoards && !twoBoards) PopDown(DummyDlg);
173 oldTwoBoards = twoBoards;
175 if(appData.overrideLineGap >= 0) lineGap = appData.overrideLineGap;
176 boardWidth = lineGap + BOARD_WIDTH * (squareSize + lineGap);
177 boardHeight = lineGap + BOARD_HEIGHT * (squareSize + lineGap);
179 if(boardWidth != oldWidth || boardHeight != oldHeight) { // do resizing stuff only if size actually changed
181 oldWidth = boardWidth; oldHeight = boardHeight;
185 * Inhibit shell resizing.
187 ResizeBoardWindow(boardWidth, boardHeight, 0);
192 // [HGM] pieces: tailor piece bitmaps to needs of specific variant
195 if(gameInfo.variant != oldVariant) { // and only if variant changed
197 SelectPieces(gameInfo.variant);
199 oldMono = -10; // kludge to force recreation of animation masks
200 oldVariant = gameInfo.variant;
203 oldMono = appData.monoMode;
207 ExposeRedraw (Option *graph, int x, int y, int w, int h)
208 { // copy a selected part of the buffer bitmap to the display
209 cairo_t *cr = cairo_create((cairo_surface_t *) graph->textValue);
210 cairo_set_source_surface(cr, (cairo_surface_t *) graph->choice, 0, 0);
211 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
212 cairo_rectangle(cr, x, y, w, h);
218 CreatePNGBoard (char *s, int kind)
220 if(!appData.useBitmaps || s == NULL || *s == 0 || *s == '*') { useTexture &= ~(kind+1); return; }
221 if(strstr(s, ".png")) {
222 cairo_surface_t *img = cairo_image_surface_create_from_png (s);
224 useTexture |= kind + 1; pngBoardBitmap[kind] = img;
225 textureW[kind] = cairo_image_surface_get_width (img);
226 textureH[kind] = cairo_image_surface_get_height (img);
231 char *pngPieceNames[] = // must be in same order as internal piece encoding
232 { "Pawn", "Knight", "Bishop", "Rook", "Queen", "Advisor", "Elephant", "Archbishop", "Marshall", "Gold", "Commoner",
233 "Canon", "Nightrider", "CrownedBishop", "CrownedRook", "Princess", "Chancellor", "Hawk", "Lance", "Cobra", "Unicorn", "King",
234 "GoldKnight", "GoldLance", "GoldPawn", "GoldSilver", NULL
238 LoadSVG (char *dir, int color, int piece)
241 RsvgHandle *svg=svgPieces[color][piece];
242 RsvgDimensionData svg_dimensions;
243 GError *svgerror=NULL;
244 cairo_surface_t *img;
247 snprintf(buf, MSG_SIZ, "%s/%s%s.svg", dir, color ? "Black" : "White", pngPieceNames[piece]);
249 if(svg || *dir && (svg = rsvg_handle_new_from_file(buf, &svgerror))) {
251 rsvg_handle_get_dimensions(svg, &svg_dimensions);
252 img = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, squareSize, squareSize);
254 cr = cairo_create(img);
255 cairo_scale(cr, squareSize/(double) svg_dimensions.width, squareSize/(double) svg_dimensions.height);
256 rsvg_handle_render_cairo(svg, cr);
257 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
258 if(pngPieceImages[color][piece]) cairo_surface_destroy(pngPieceImages[color][piece]);
259 pngPieceImages[color][piece] = img;
266 g_error_free(svgerror);
271 ScaleOnePiece (int color, int piece)
275 cairo_surface_t *img, *cs;
280 svgPieces[color][piece] = LoadSVG("", color, piece); // this fills pngPieceImages if we had cached svg with bitmap of wanted size
282 if(!pngPieceImages[color][piece]) { // we don't have cached bitmap (implying we did not have cached svg)
283 if(*appData.pieceDirectory) { // user specified piece directory
284 snprintf(buf, MSG_SIZ, "%s/%s%s.png", appData.pieceDirectory, color ? "Black" : "White", pngPieceNames[piece]);
285 img = cairo_image_surface_create_from_png (buf); // try if there are png pieces there
286 if(cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) { // there were not
287 svgPieces[color][piece] = LoadSVG(appData.pieceDirectory, color, piece); // so try if he has svg there
288 } else pngPieceImages[color][piece] = img;
292 if(!pngPieceImages[color][piece]) { // we still did not manage to acquire a piece bitmap
293 static int warned = 0;
294 if(!(svgPieces[color][piece] = LoadSVG(SVGDIR, color, piece)) && !warned) { // try to fall back on installed svg
295 char *msg = _("No default pieces installed\nSelect your own -pieceImageDirectory");
296 printf("%s\n", msg); // give up
297 DisplayError(msg, 0);
298 warned = 1; // prevent error message being repeated for each piece type
302 img = pngPieceImages[color][piece];
304 // create new bitmap to hold scaled piece image (and remove any old)
305 if(pngPieceBitmaps2[color][piece]) cairo_surface_destroy (pngPieceBitmaps2[color][piece]);
306 pngPieceBitmaps2[color][piece] = cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
310 // scaled copying of the raw png image
311 cr = cairo_create(cs);
312 w = cairo_image_surface_get_width (img);
313 h = cairo_image_surface_get_height (img);
314 cairo_scale(cr, squareSize/w, squareSize/h);
315 cairo_set_source_surface (cr, img, 0, 0);
319 if(!appData.trueColors || !*appData.pieceDirectory) { // operate on bitmap to color it (king-size hack...)
320 int stride = cairo_image_surface_get_stride(cs)/4;
321 int *buf = (int *) cairo_image_surface_get_data(cs);
323 sscanf(color ? appData.blackPieceColor+1 : appData.whitePieceColor+1, "%x", &p); // replacement color
324 cairo_surface_flush(cs);
325 for(i=0; i<squareSize; i++) for(j=0; j<squareSize; j++) {
328 unsigned int c = buf[i*stride + j];
329 a = c >> 24; r = c >> 16 & 255; // alpha and red, where red is the 'white' weight, since white is #FFFFCC in the source images
330 f = (color ? a - r : r)/255.; // fraction of black or white in the mix that has to be replaced
331 buf[i*stride + j] = c & 0xFF000000; // alpha channel is kept at same opacity
332 buf[i*stride + j] += ((int)(f*(p&0xFF0000)) & 0xFF0000) + ((int)(f*(p&0xFF00)) & 0xFF00) + (int)(f*(p&0xFF)); // add desired fraction of new color
333 if(color) buf[i*stride + j] += r | r << 8 | r << 16; // details on black pieces get their weight added in pure white
334 if(appData.monoMode) {
335 if(a < 64) buf[i*stride + j] = 0; // if not opaque enough, totally transparent
336 else if(2*r < a) buf[i*stride + j] = 0xFF000000; // if not light enough, totally black
337 else buf[i*stride + j] = 0xFFFFFFFF; // otherwise white
340 cairo_surface_mark_dirty(cs);
349 for(p=0; pngPieceNames[p]; p++) {
353 SelectPieces(gameInfo.variant);
358 { // [HGM] taken out of main
360 CreatePNGBoard(appData.liteBackTextureFile, 1);
361 CreatePNGBoard(appData.darkBackTextureFile, 0);
365 InitDrawingParams (int reloadPieces)
369 for(i=0; i<2; i++) for(p=0; p<BlackPawn+4; p++) {
370 if(pngPieceImages[i][p]) cairo_surface_destroy(pngPieceImages[i][p]);
371 pngPieceImages[i][p] = NULL;
372 if(svgPieces[i][p]) rsvg_handle_close(svgPieces[i][p], NULL);
373 svgPieces[i][p] = NULL;
378 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
381 Color (char *col, int n)
384 sscanf(col, "#%x", &c);
390 SetPen (cairo_t *cr, float w, char *col, int dash)
392 static const double dotted[] = {4.0, 4.0};
393 static int len = sizeof(dotted) / sizeof(dotted[0]);
394 cairo_set_line_width (cr, w);
395 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
396 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
399 void DrawSeekAxis( int x, int y, int xTo, int yTo )
404 cr = cairo_create (csBoardWindow);
406 cairo_move_to (cr, x, y);
407 cairo_line_to(cr, xTo, yTo );
409 SetPen(cr, 2, "#000000", 0);
414 GraphExpose(currBoard, x-1, yTo-1, xTo-x+2, y-yTo+2);
417 void DrawSeekBackground( int left, int top, int right, int bottom )
419 cairo_t *cr = cairo_create (csBoardWindow);
421 cairo_rectangle (cr, left, top, right-left, bottom-top);
423 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
428 GraphExpose(currBoard, left, top, right-left, bottom-top);
431 void DrawSeekText(char *buf, int x, int y)
433 cairo_t *cr = cairo_create (csBoardWindow);
435 cairo_select_font_face (cr, "Sans",
436 CAIRO_FONT_SLANT_NORMAL,
437 CAIRO_FONT_WEIGHT_NORMAL);
439 cairo_set_font_size (cr, 12.0);
441 cairo_move_to (cr, x, y+4);
442 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
443 cairo_show_text( cr, buf);
447 GraphExpose(currBoard, x-5, y-10, 60, 15);
450 void DrawSeekDot(int x, int y, int colorNr)
452 cairo_t *cr = cairo_create (csBoardWindow);
453 int square = colorNr & 0x80;
457 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
459 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
461 SetPen(cr, 2, "#000000", 0);
462 cairo_stroke_preserve(cr);
464 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
465 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
466 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
472 GraphExpose(currBoard, x-squareSize/8, y-squareSize/8, 2*(squareSize/8), 2*(squareSize/8));
476 InitDrawingHandle (Option *opt)
478 csBoardWindow = DRAWABLE(opt);
486 if (lineGap == 0) return;
488 /* [HR] Split this into 2 loops for non-square boards. */
490 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
491 gridSegments[i].x1 = 0;
493 lineGap + BOARD_WIDTH * (squareSize + lineGap);
494 gridSegments[i].y1 = gridSegments[i].y2
495 = lineGap / 2 + (i * (squareSize + lineGap));
498 for (j = 0; j < BOARD_WIDTH + 1; j++) {
499 gridSegments[j + i].y1 = 0;
500 gridSegments[j + i].y2 =
501 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
502 gridSegments[j + i].x1 = gridSegments[j + i].x2
503 = lineGap / 2 + (j * (squareSize + lineGap));
510 /* draws a grid starting around Nx, Ny squares starting at x,y */
512 float odd = (lineGap & 1)/2.;
516 cr = cairo_create (csBoardWindow);
518 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
519 SetPen(cr, lineGap, "#000000", 0);
522 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
524 int h = (gridSegments[i].y1 == gridSegments[i].y2); // horizontal
525 cairo_move_to (cr, gridSegments[i].x1 + !h*odd, gridSegments[i].y1 + h*odd);
526 cairo_line_to (cr, gridSegments[i].x2 + !h*odd, gridSegments[i].y2 + h*odd);
537 DrawBorder (int x, int y, int type, int odd)
543 case 0: col = "#000000"; break;
544 case 1: col = appData.highlightSquareColor; break;
545 case 2: col = appData.premoveHighlightColor; break;
547 cr = cairo_create(csBoardWindow);
548 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
549 cairo_rectangle(cr, x+odd/2., y+odd/2., squareSize+lineGap, squareSize+lineGap);
550 SetPen(cr, lineGap, col, 0);
553 GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap+odd, squareSize+2*lineGap+odd);
557 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
559 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
560 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
562 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
563 if(textureW[kind] < W*squareSize)
564 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
566 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
567 if(textureH[kind] < H*squareSize)
568 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
570 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
575 DrawLogo (Option *opt, void *logo)
577 cairo_surface_t *img;
581 if(!logo || !opt) return;
582 img = cairo_image_surface_create_from_png (logo);
583 w = cairo_image_surface_get_width (img);
584 h = cairo_image_surface_get_height (img);
585 cr = cairo_create(DRAWABLE(opt));
586 cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
587 cairo_set_source_surface (cr, img, 0, 0);
590 cairo_surface_destroy (img);
591 GraphExpose(opt, 0, 0, appData.logoSize, appData.logoSize/2);
595 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
596 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
600 cr = cairo_create (dest);
602 if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) {
603 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
604 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
605 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
608 } else { // evenly colored squares
611 case 0: col = appData.darkSquareColor; break;
612 case 1: col = appData.lightSquareColor; break;
613 case 2: col = "#000000"; break;
615 SetPen(cr, 2.0, col, 0);
616 cairo_rectangle (cr, fac*x, fac*y, squareSize, squareSize);
617 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
624 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
629 if ((int)piece < (int) BlackPawn) {
635 if(appData.upsideDown && flipView) { p += p < BlackPawn ? BlackPawn : -BlackPawn; }// swap white and black pieces
636 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
637 cr = cairo_create (dest);
638 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
644 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
648 cr = cairo_create(cs);
649 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
650 if(appData.monoMode) {
651 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
652 cairo_stroke_preserve(cr);
653 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
655 SetPen(cr, 2, marker == 2 ? "#FF0000" : "#FFFF00", 0);
663 DrawDot (int marker, int x, int y, int r)
664 { // used for atomic captures; no need to draw on backup
665 DoDrawDot(csBoardWindow, marker, x, y, r);
666 GraphExpose(currBoard, x-r, y-r, 2*r, 2*r);
670 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *string, int align)
671 { // basic front-end board-draw function: takes care of everything that can be in square:
672 // piece, background, coordinate/count, marker dot
675 if (piece == EmptySquare) {
676 BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
678 pngDrawPiece(csBoardWindow, piece, square_color, x, y);
681 if(align) { // square carries inscription (coord or piece count)
683 cairo_text_extents_t te;
685 cr = cairo_create (csBoardWindow);
686 cairo_select_font_face (cr, "Sans",
687 CAIRO_FONT_SLANT_NORMAL,
688 CAIRO_FONT_WEIGHT_BOLD);
690 cairo_set_font_size (cr, squareSize/4);
691 // calculate where it goes
692 cairo_text_extents (cr, string, &te);
695 xx += squareSize - te.width - te.x_bearing - 1;
696 yy += squareSize - te.height - te.y_bearing - 1;
697 } else if (align == 2) {
698 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
699 } else if (align == 3) {
700 xx += squareSize - te.width -te.x_bearing - 1;
701 yy += -te.y_bearing + 3;
702 } else if (align == 4) {
703 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
706 cairo_move_to (cr, xx-1, yy);
707 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
708 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
709 cairo_show_text (cr, string);
713 if(marker) { // print fat marker dot, if requested
714 DoDrawDot(csBoardWindow, marker, x + squareSize/4, y+squareSize/4, squareSize/2);
718 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
720 /* Masks for XPM pieces. Black and white pieces can have
721 different shapes, but in the interest of retaining my
722 sanity pieces must have the same outline on both light
723 and dark squares, and all pieces must use the same
724 background square colors/images. */
726 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
729 InitAnimState (AnimNr anr)
731 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
732 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
733 c_animBufs[anr+4] = csBoardWindow;
734 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
735 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
742 InitAnimState(Player);
746 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
748 static cairo_t *pieceSource;
749 pieceSource = cairo_create (dest);
750 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
751 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
752 else cairo_paint(pieceSource);
753 cairo_destroy (pieceSource);
757 InsertPiece (AnimNr anr, ChessSquare piece)
759 CairoOverlayPiece(piece, c_animBufs[anr]);
763 DrawBlank (AnimNr anr, int x, int y, int startColor)
765 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
768 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
769 int srcX, int srcY, int width, int height, int destX, int destY)
772 c_animBufs[anr+4] = csBoardWindow;
773 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);