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, 2013, 2014 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 */
83 #include "evalgraph.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], *pngOriginalBoardBitmap[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)
120 char svgDir[MSG_SIZ] = SVGDIR;
122 char *crWhite = "#FFFFB0";
123 char *crBlack = "#AD5D3D";
127 } gridSegments[BOARD_RANKS + BOARD_FILES + 2];
130 SwitchWindow (int main)
132 currBoard = (main ? &mainOptions[W_BOARD] : &dualOptions[3]);
133 csBoardWindow = DRAWABLE(currBoard);
137 SelectPieces(VariantClass v)
142 for(p=0; p<=(int)WhiteKing; p++)
143 pngPieceBitmaps[i][p] = pngPieceBitmaps2[i][p]; // defaults
144 if(v == VariantShogi) {
145 pngPieceBitmaps[i][(int)WhiteCannon] = pngPieceBitmaps2[i][(int)WhiteTokin];
146 pngPieceBitmaps[i][(int)WhiteNightrider] = pngPieceBitmaps2[i][(int)WhiteKing+2];
147 pngPieceBitmaps[i][(int)WhiteGrasshopper] = pngPieceBitmaps2[i][(int)WhiteKing+3];
148 pngPieceBitmaps[i][(int)WhiteSilver] = pngPieceBitmaps2[i][(int)WhiteKing+4];
149 pngPieceBitmaps[i][(int)WhiteQueen] = pngPieceBitmaps2[i][(int)WhiteLance];
150 pngPieceBitmaps[i][(int)WhiteFalcon] = pngPieceBitmaps2[i][(int)WhiteMonarch]; // for Sho Shogi
153 if(v == VariantGothic) {
154 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteSilver];
157 if(v == VariantSChess) {
158 pngPieceBitmaps[i][(int)WhiteAngel] = pngPieceBitmaps2[i][(int)WhiteFalcon];
159 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteAlfil];
161 if(v == VariantChuChess) {
162 pngPieceBitmaps[i][(int)WhiteNightrider] = pngPieceBitmaps2[i][(int)WhiteLion];
164 if(v == VariantChu) {
165 pngPieceBitmaps[i][(int)WhiteNightrider] = pngPieceBitmaps2[i][(int)WhiteKing+1];
166 pngPieceBitmaps[i][(int)WhiteUnicorn] = pngPieceBitmaps2[i][(int)WhiteCat];
167 pngPieceBitmaps[i][(int)WhiteSilver] = pngPieceBitmaps2[i][(int)WhiteSword];
168 pngPieceBitmaps[i][(int)WhiteFalcon] = pngPieceBitmaps2[i][(int)WhiteDagger];
173 #define BoardSize int
175 InitDrawingSizes (BoardSize boardSize, int flags)
176 { // [HGM] resize is functional now, but for board format changes only (nr of ranks, files)
177 int boardWidth, boardHeight;
178 static int oldWidth, oldHeight;
179 static VariantClass oldVariant;
180 static int oldTwoBoards = 0, oldNrOfFiles = 0;
182 if(!mainOptions[W_BOARD].handle) return;
184 if(boardSize == -2 && gameInfo.variant != oldVariant
185 && oldNrOfFiles && oldNrOfFiles != BOARD_WIDTH) { // called because variant switch changed board format
186 squareSize = ((squareSize + lineGap) * oldNrOfFiles + 0.5*BOARD_WIDTH) / BOARD_WIDTH; // keep total width fixed
187 if(appData.overrideLineGap < 0) lineGap = squareSize < 37 ? 1 : squareSize < 59 ? 2 : squareSize < 116 ? 3 : 4;
188 squareSize -= lineGap;
192 oldNrOfFiles = BOARD_WIDTH;
194 if(oldTwoBoards && !twoBoards) PopDown(DummyDlg);
195 oldTwoBoards = twoBoards;
197 if(appData.overrideLineGap >= 0) lineGap = appData.overrideLineGap;
198 boardWidth = lineGap + BOARD_WIDTH * (squareSize + lineGap);
199 boardHeight = lineGap + BOARD_HEIGHT * (squareSize + lineGap);
201 if(boardWidth != oldWidth || boardHeight != oldHeight) { // do resizing stuff only if size actually changed
203 oldWidth = boardWidth; oldHeight = boardHeight;
205 CreateAnyPieces(0); // redo texture scaling
208 * Inhibit shell resizing.
210 ResizeBoardWindow(boardWidth, boardHeight, 0);
215 // [HGM] pieces: tailor piece bitmaps to needs of specific variant
218 if(gameInfo.variant != oldVariant) { // and only if variant changed
220 SelectPieces(gameInfo.variant);
222 oldVariant = gameInfo.variant;
228 ExposeRedraw (Option *graph, int x, int y, int w, int h)
229 { // copy a selected part of the buffer bitmap to the display
230 cairo_t *cr = cairo_create((cairo_surface_t *) graph->textValue);
231 cairo_set_source_surface(cr, (cairo_surface_t *) graph->choice, 0, 0);
232 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
233 cairo_rectangle(cr, x, y, w, h);
239 CreatePNGBoard (char *s, int kind)
242 static float n[2] = { 1., 1. };
243 if(!appData.useBitmaps || s == NULL || *s == 0 || *s == '*') { useTexture &= ~(kind+1); return; }
244 if(strstr(s, ".png")) {
245 cairo_surface_t *img = cairo_image_surface_create_from_png (s);
247 if(pngOriginalBoardBitmap[kind]) cairo_surface_destroy(pngOriginalBoardBitmap[kind]);
248 if(n[kind] != 1.) cairo_surface_destroy(pngBoardBitmap[kind]);
249 useTexture |= kind + 1; pngOriginalBoardBitmap[kind] = img;
250 w = textureW[kind] = cairo_image_surface_get_width (img);
251 h = textureH[kind] = cairo_image_surface_get_height (img);
253 if(w > 256 & h > 256) { // full-board image?
254 while(squareSize*9 > n[kind]*w || squareSize*10 > n[kind]*h) n[kind]++;
256 while(squareSize > n[kind]*w || squareSize > n[kind]*h) n[kind]++;
258 if(n[kind] == 1.) pngBoardBitmap[kind] = img; else {
259 // create scaled-up copy of the raw png image when it was too small
260 cairo_surface_t *cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, n[kind]*w, n[kind]*h);
261 cairo_t *cr = cairo_create(cs);
262 pngBoardBitmap[kind] = cs; textureW[kind] *= n[kind]; textureH[kind] *= n[kind];
263 cairo_scale(cr, n[kind], n[kind]);
264 cairo_set_source_surface (cr, img, 0, 0);
272 char *pngPieceNames[] = // must be in same order as internal piece encoding
273 { "Pawn", "Knight", "Bishop", "Rook", "Queen", "Advisor", "Elephant", "Archbishop", "Marshall", "Gold", "Commoner",
274 "Canon", "Nightrider", "CrownedBishop", "CrownedRook", "Princess", "Chancellor", "Hawk", "Lance", "Cobra", "Unicorn", "Lion",
275 "GoldPawn", "HSword", "PromoHorse", "PromoDragon", "Leopard", "PromoSword", "Prince", "Phoenix", "Kylin", "PromoRook", "PromoHSword",
276 "Dolphin", "Chancellor", "Unicorn", "Hawk", "Sword", "Princess", "HCrown", "Knight", "Elephant", "PromoBishop", "King",
277 "Claw", "GoldKnight", "GoldLance", "GoldSilver", NULL
280 char *backupPiece[] = { "King", "Queen", "Lion" }; // pieces that map on other when not kanji
283 LoadSVG (char *dir, int color, int piece, int retry)
286 RsvgHandle *svg=svgPieces[color][piece];
287 RsvgDimensionData svg_dimensions;
288 GError *svgerror=NULL;
289 cairo_surface_t *img;
292 snprintf(buf, MSG_SIZ, "%s/%s%s.svg", dir, color ? "Black" : "White",
293 retry ? backupPiece[piece - WhiteMonarch] : pngPieceNames[piece]);
295 if(svg || *dir && (svg = rsvg_handle_new_from_file(buf, &svgerror))) {
297 rsvg_handle_get_dimensions(svg, &svg_dimensions);
298 img = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, squareSize, squareSize);
300 cr = cairo_create(img);
301 cairo_scale(cr, squareSize/(double) svg_dimensions.width, squareSize/(double) svg_dimensions.height);
302 rsvg_handle_render_cairo(svg, cr);
303 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
304 if(pngPieceImages[color][piece]) cairo_surface_destroy(pngPieceImages[color][piece]);
305 pngPieceImages[color][piece] = img;
311 if(!retry && piece >= WhiteMonarch && piece <= WhiteNothing) // pieces that are only different in kanji sets
312 return LoadSVG(dir, color, piece, 1);
314 g_error_free(svgerror);
319 ScaleOnePiece (int color, int piece)
323 cairo_surface_t *img, *cs;
328 svgPieces[color][piece] = LoadSVG("", color, piece, 0); // this fills pngPieceImages if we had cached svg with bitmap of wanted size
330 if(!pngPieceImages[color][piece]) { // we don't have cached bitmap (implying we did not have cached svg)
331 if(*appData.pieceDirectory) { // user specified piece directory
332 snprintf(buf, MSG_SIZ, "%s/%s%s.png", appData.pieceDirectory, color ? "Black" : "White", pngPieceNames[piece]);
333 img = cairo_image_surface_create_from_png (buf); // try if there are png pieces there
334 if(cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) { // there were not
335 svgPieces[color][piece] = LoadSVG(appData.pieceDirectory, color, piece, 0); // so try if he has svg there
336 } else pngPieceImages[color][piece] = img;
340 if(!pngPieceImages[color][piece]) { // we still did not manage to acquire a piece bitmap
341 static int warned = 0;
342 if(!(svgPieces[color][piece] = LoadSVG(svgDir, color, piece, 0)) && !warned) { // try to fall back on installed svg
343 char *msg = _("No default pieces installed!\nSelect your own using '-pieceImageDirectory'.");
344 printf("%s\n", msg); // give up
345 DisplayError(msg, 0);
346 warned = 1; // prevent error message being repeated for each piece type
350 img = pngPieceImages[color][piece];
352 // create new bitmap to hold scaled piece image (and remove any old)
353 if(pngPieceBitmaps2[color][piece]) cairo_surface_destroy (pngPieceBitmaps2[color][piece]);
354 pngPieceBitmaps2[color][piece] = cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
358 // scaled copying of the raw png image
359 cr = cairo_create(cs);
360 w = cairo_image_surface_get_width (img);
361 h = cairo_image_surface_get_height (img);
362 cairo_scale(cr, squareSize/w, squareSize/h);
363 cairo_set_source_surface (cr, img, 0, 0);
367 if(!appData.trueColors || !*appData.pieceDirectory) { // operate on bitmap to color it (king-size hack...)
368 int stride = cairo_image_surface_get_stride(cs)/4;
369 int *buf = (int *) cairo_image_surface_get_data(cs);
371 sscanf(color ? appData.blackPieceColor+1 : appData.whitePieceColor+1, "%x", &p); // replacement color
372 cairo_surface_flush(cs);
373 for(i=0; i<squareSize; i++) for(j=0; j<squareSize; j++) {
376 unsigned int c = buf[i*stride + j];
377 a = c >> 24; r = c >> 16 & 255; // alpha and red, where red is the 'white' weight, since white is #FFFFCC in the source images
378 f = (color ? a - r : r)/255.; // fraction of black or white in the mix that has to be replaced
379 buf[i*stride + j] = c & 0xFF000000; // alpha channel is kept at same opacity
380 buf[i*stride + j] += ((int)(f*(p&0xFF0000)) & 0xFF0000) + ((int)(f*(p&0xFF00)) & 0xFF00) + (int)(f*(p&0xFF)); // add desired fraction of new color
381 if(color) buf[i*stride + j] += r | r << 8 | r << 16; // details on black pieces get their weight added in pure white
382 if(appData.monoMode) {
383 if(a < 64) buf[i*stride + j] = 0; // if not opaque enough, totally transparent
384 else if(2*r < a) buf[i*stride + j] = 0xFF000000; // if not light enough, totally black
385 else buf[i*stride + j] = 0xFFFFFFFF; // otherwise white
388 cairo_surface_mark_dirty(cs);
397 for(p=0; pngPieceNames[p]; p++) {
401 SelectPieces(gameInfo.variant);
405 CreateAnyPieces (int p)
406 { // [HGM] taken out of main
407 if(p) CreatePNGPieces();
408 CreatePNGBoard(appData.liteBackTextureFile, 1);
409 CreatePNGBoard(appData.darkBackTextureFile, 0);
413 InitDrawingParams (int reloadPieces)
417 for(i=0; i<2; i++) for(p=0; p<BlackPawn+4; p++) {
418 if(pngPieceImages[i][p]) cairo_surface_destroy(pngPieceImages[i][p]);
419 pngPieceImages[i][p] = NULL;
420 if(svgPieces[i][p]) rsvg_handle_close(svgPieces[i][p], NULL);
421 svgPieces[i][p] = NULL;
426 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
429 Color (char *col, int n)
432 sscanf(col, "#%x", &c);
438 SetPen (cairo_t *cr, float w, char *col, int dash)
440 static const double dotted[] = {4.0, 4.0};
441 static int len = sizeof(dotted) / sizeof(dotted[0]);
442 cairo_set_line_width (cr, w);
443 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
444 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
447 void DrawSeekAxis( int x, int y, int xTo, int yTo )
452 cr = cairo_create (csBoardWindow);
454 cairo_move_to (cr, x, y);
455 cairo_line_to(cr, xTo, yTo );
457 SetPen(cr, 2, "#000000", 0);
462 GraphExpose(currBoard, x-1, yTo-1, xTo-x+2, y-yTo+2);
465 void DrawSeekBackground( int left, int top, int right, int bottom )
467 cairo_t *cr = cairo_create (csBoardWindow);
469 cairo_rectangle (cr, left, top, right-left, bottom-top);
471 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
476 GraphExpose(currBoard, left, top, right-left, bottom-top);
479 void DrawSeekText(char *buf, int x, int y)
481 cairo_t *cr = cairo_create (csBoardWindow);
483 cairo_select_font_face (cr, "Sans",
484 CAIRO_FONT_SLANT_NORMAL,
485 CAIRO_FONT_WEIGHT_NORMAL);
487 cairo_set_font_size (cr, 12.0);
489 cairo_move_to (cr, x, y+4);
490 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
491 cairo_show_text( cr, buf);
495 GraphExpose(currBoard, x-5, y-10, 60, 15);
498 void DrawSeekDot(int x, int y, int colorNr)
500 cairo_t *cr = cairo_create (csBoardWindow);
501 int square = colorNr & 0x80;
505 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
507 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
509 SetPen(cr, 2, "#000000", 0);
510 cairo_stroke_preserve(cr);
512 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
513 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
514 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
520 GraphExpose(currBoard, x-squareSize/8, y-squareSize/8, 2*(squareSize/8), 2*(squareSize/8));
524 InitDrawingHandle (Option *opt)
526 csBoardWindow = DRAWABLE(opt);
534 if (lineGap == 0) return;
536 /* [HR] Split this into 2 loops for non-square boards. */
538 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
539 gridSegments[i].x1 = 0;
541 lineGap + BOARD_WIDTH * (squareSize + lineGap);
542 gridSegments[i].y1 = gridSegments[i].y2
543 = lineGap / 2 + (i * (squareSize + lineGap));
546 for (j = 0; j < BOARD_WIDTH + 1; j++) {
547 gridSegments[j + i].y1 = 0;
548 gridSegments[j + i].y2 =
549 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
550 gridSegments[j + i].x1 = gridSegments[j + i].x2
551 = lineGap / 2 + (j * (squareSize + lineGap));
558 /* draws a grid starting around Nx, Ny squares starting at x,y */
560 float odd = (lineGap & 1)/2.;
564 cr = cairo_create (csBoardWindow);
566 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
567 SetPen(cr, lineGap, "#000000", 0);
570 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
572 int h = (gridSegments[i].y1 == gridSegments[i].y2); // horizontal
573 cairo_move_to (cr, gridSegments[i].x1 + !h*odd, gridSegments[i].y1 + h*odd);
574 cairo_line_to (cr, gridSegments[i].x2 + !h*odd, gridSegments[i].y2 + h*odd);
585 DrawBorder (int x, int y, int type, int odd)
591 case 0: col = "#000000"; break;
592 case 1: col = appData.highlightSquareColor; break;
593 case 2: col = appData.premoveHighlightColor; break;
594 default: col = "#808080"; break; // cannot happen
596 cr = cairo_create(csBoardWindow);
597 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
598 cairo_rectangle(cr, x+odd/2., y+odd/2., squareSize+lineGap, squareSize+lineGap);
599 SetPen(cr, lineGap, col, 0);
602 GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap+odd, squareSize+2*lineGap+odd);
606 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
608 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
609 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
611 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
612 if(textureW[kind] < W*squareSize)
613 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
615 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
616 if(textureH[kind] < H*squareSize)
617 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
619 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
624 DrawLogo (Option *opt, void *logo)
626 cairo_surface_t *img;
630 if(!logo || !opt) return;
631 img = cairo_image_surface_create_from_png (logo);
632 w = cairo_image_surface_get_width (img);
633 h = cairo_image_surface_get_height (img);
634 cr = cairo_create(DRAWABLE(opt));
635 // cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
636 cairo_scale(cr, (float)opt->max/w, (float)opt->value/h);
637 cairo_set_source_surface (cr, img, 0, 0);
640 cairo_surface_destroy (img);
641 GraphExpose(opt, 0, 0, appData.logoSize, appData.logoSize/2);
645 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
646 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
650 cr = cairo_create (dest);
652 if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) {
653 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
654 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
655 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
658 } else { // evenly colored squares
661 case 0: col = appData.darkSquareColor; break;
662 case 1: col = appData.lightSquareColor; break;
663 case 2: col = "#000000"; break;
664 default: col = "#808080"; break; // cannot happen
666 SetPen(cr, 2.0, col, 0);
667 cairo_rectangle (cr, fac*x, fac*y, squareSize, squareSize);
668 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
675 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
680 if ((int)piece < (int) BlackPawn) {
686 if(appData.upsideDown && flipView) kind = 1 - kind; // swap white and black pieces
687 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
688 cr = cairo_create (dest);
689 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
694 static char *markerColor[8] = { "#FFFF00", "#FF0000", "#00FF00", "#0000FF", "#00FFFF", "#FF00FF", "#FFFFFF", "#000000" };
697 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
701 cr = cairo_create(cs);
702 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
703 if(appData.monoMode) {
704 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
705 cairo_stroke_preserve(cr);
706 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
708 SetPen(cr, 2, markerColor[marker-1], 0);
716 DrawDot (int marker, int x, int y, int r)
717 { // used for atomic captures; no need to draw on backup
718 DoDrawDot(csBoardWindow, marker, x, y, r);
719 GraphExpose(currBoard, x-r, y-r, 2*r, 2*r);
723 DrawText (char *string, int x, int y, int align)
726 cairo_text_extents_t te;
729 cr = cairo_create (csBoardWindow);
730 cairo_select_font_face (cr, "Sans",
731 CAIRO_FONT_SLANT_NORMAL,
732 CAIRO_FONT_WEIGHT_BOLD);
734 cairo_set_font_size (cr, align < 0 ? 2*squareSize/3 : squareSize/4);
735 // calculate where it goes
736 cairo_text_extents (cr, string, &te);
739 xx += squareSize - te.width - te.x_bearing - 1;
740 yy += squareSize - te.height - te.y_bearing - 1;
741 } else if (align == 2) {
742 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
743 } else if (align == 3) {
744 xx += squareSize - te.width -te.x_bearing - 1;
745 yy += -te.y_bearing + 3;
746 } else if (align == 4) {
747 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
748 } else if (align < 0) {
749 xx += squareSize/2 - te.width/2, yy += 9*squareSize/16 - te.y_bearing/2;
752 cairo_move_to (cr, xx-1, yy);
753 if(align == -2) cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); else
754 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
755 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
756 cairo_show_text (cr, string);
761 InscribeKanji (ChessSquare piece, int x, int y)
763 char *p, *q, buf[10];
765 if(piece == EmptySquare) return;
766 if(piece >= BlackPawn) piece = BLACK_TO_WHITE piece;
767 p = appData.inscriptions;
769 while(piece > WhitePawn) {
770 if(*p++ == NULLCHAR) {
771 if(n != WhiteKing) return;
776 while((*p & 0xC0) == 0x80) p++; // skip UTF-8 continuation bytes
780 for(q=buf; (*++q & 0xC0) == 0x80;);
782 DrawText(buf, x, y, n > WhiteLion ? -2 : -1);
786 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *tString, char *bString, int align)
787 { // basic front-end board-draw function: takes care of everything that can be in square:
788 // piece, background, coordinate/count, marker dot
790 if (piece == EmptySquare) {
791 BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
793 pngDrawPiece(csBoardWindow, piece, square_color, x, y);
794 if(appData.inscriptions[0]) InscribeKanji(piece, x, y);
797 if(align) { // square carries inscription (coord or piece count)
798 if(align > 1) DrawText(tString, x, y, align); // top (rank or count)
799 if(bString && *bString) DrawText(bString, x, y, 1); // bottom (always lower right file ID)
802 if(marker) { // print fat marker dot, if requested
803 DoDrawDot(csBoardWindow, marker, x + squareSize/4, y+squareSize/4, squareSize/2);
807 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
809 /* Masks for XPM pieces. Black and white pieces can have
810 different shapes, but in the interest of retaining my
811 sanity pieces must have the same outline on both light
812 and dark squares, and all pieces must use the same
813 background square colors/images. */
815 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
818 InitAnimState (AnimNr anr)
820 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
821 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
822 c_animBufs[anr+4] = csBoardWindow;
823 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
824 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
831 InitAnimState(Player);
835 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
837 static cairo_t *pieceSource;
838 pieceSource = cairo_create (dest);
839 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
840 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
841 else cairo_paint(pieceSource);
842 cairo_destroy (pieceSource);
846 InsertPiece (AnimNr anr, ChessSquare piece)
848 CairoOverlayPiece(piece, c_animBufs[anr]);
852 DrawBlank (AnimNr anr, int x, int y, int startColor)
854 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
857 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
858 int srcX, int srcY, int width, int height, int destX, int destY)
861 c_animBufs[anr+4] = csBoardWindow;
862 cr = cairo_create (c_animBufs[anr+destBuf]);
863 cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY);
864 cairo_rectangle (cr, destX, destY, width, height);
867 if(c_animBufs[anr+destBuf] == csBoardWindow) // suspect that GTK needs this!
868 GraphExpose(currBoard, destX, destY, width, height);
872 SetDragPiece (AnimNr anr, ChessSquare piece)
876 /* [AS] Arrow highlighting support */
879 DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr)
883 cr = cairo_create (cs);
884 cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y);
886 cairo_line_to(cr, arrow[i].x, arrow[i].y);
888 if(appData.monoMode) { // should we always outline arrow?
889 cairo_line_to(cr, arrow[0].x, arrow[0].y);
890 SetPen(cr, 2, "#000000", 0);
891 cairo_stroke_preserve(cr);
893 SetPen(cr, 2, appData.highlightSquareColor, 0);
901 DrawPolygon (Pnt arrow[], int nr)
903 DoDrawPolygon(csBoardWindow, arrow, nr);
904 // if(!dual) DoDrawPolygon(csBoardBackup, arrow, nr);
907 //-------------------- Eval Graph drawing routines (formerly in xevalgraph.h) --------------------
910 ChoosePen(cairo_t *cr, int i)
914 SetPen(cr, 1.0, "#000000", 0);
917 SetPen(cr, 1.0, "#A0A0A0", 1);
920 SetPen(cr, 1.0, "#0000FF", 1);
923 SetPen(cr, 3.0, crWhite, 0);
926 SetPen(cr, 3.0, crBlack, 0);
929 SetPen(cr, 3.0, "#E0E0F0", 0);
934 // [HGM] front-end, added as wrapper to avoid use of LineTo and MoveToEx in other routines (so they can be back-end)
936 DrawSegment (int x, int y, int *lastX, int *lastY, int penType)
938 static int curX, curY;
940 if(penType != PEN_NONE) {
941 cairo_t *cr = cairo_create(DRAWABLE(disp));
942 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
943 cairo_move_to (cr, curX, curY);
944 cairo_line_to (cr, x,y);
945 ChoosePen(cr, penType);
950 if(lastX != NULL) { *lastX = curX; *lastY = curY; }
954 // front-end wrapper for drawing functions to do rectangles
956 DrawRectangle (int left, int top, int right, int bottom, int side, int style)
960 cr = cairo_create (DRAWABLE(disp));
961 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
962 cairo_rectangle (cr, left, top, right-left, bottom-top);
965 case 0: ChoosePen(cr, PEN_BOLDWHITE); break;
966 case 1: ChoosePen(cr, PEN_BOLDBLACK); break;
967 case 2: ChoosePen(cr, PEN_BACKGD); break;
973 cairo_rectangle (cr, left, top, right-left-1, bottom-top-1);
974 ChoosePen(cr, PEN_BLACK);
981 // front-end wrapper for putting text in graph
983 DrawEvalText (char *buf, int cbBuf, int y)
985 // the magic constants 8 and 5 should really be derived from the font size somehow
986 cairo_text_extents_t extents;
987 cairo_t *cr = cairo_create(DRAWABLE(disp));
989 /* GTK-TODO this has to go into the font-selection */
990 cairo_select_font_face (cr, "Sans",
991 CAIRO_FONT_SLANT_NORMAL,
992 CAIRO_FONT_WEIGHT_NORMAL);
993 cairo_set_font_size (cr, 12.0);
996 cairo_text_extents (cr, buf, &extents);
998 cairo_move_to (cr, MarginX - 2 - 8*cbBuf, y+5);
999 cairo_text_path (cr, buf);
1000 cairo_set_source_rgb (cr, 0.0, 0.0, 0);
1001 cairo_fill_preserve (cr);
1002 cairo_set_source_rgb (cr, 0, 1.0, 0);
1003 cairo_set_line_width (cr, 0.1);