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, 2015 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>
60 #include <pango/pangocairo.h>
65 #else /* not STDC_HEADERS */
66 extern char *getenv();
69 # else /* not HAVE_STRING_H */
71 # endif /* not HAVE_STRING_H */
72 #endif /* not STDC_HEADERS */
84 #include "evalgraph.h"
93 #define usleep(t) _sleep2(((t)+500)/1000)
97 # define _(s) gettext (s)
98 # define N_(s) gettext_noop (s)
106 Boolean cairoAnimate;
108 cairo_surface_t *csBoardWindow;
109 static cairo_surface_t *pngPieceImages[2][(int)BlackPawn+4]; // png 256 x 256 images
110 static cairo_surface_t *pngPieceBitmaps[2][(int)BlackPawn]; // scaled pieces as used
111 static cairo_surface_t *pngPieceBitmaps2[2][(int)BlackPawn+4]; // scaled pieces in store
112 static RsvgHandle *svgPieces[2][(int)BlackPawn+4]; // vector pieces in store
113 static cairo_surface_t *pngBoardBitmap[2], *pngOriginalBoardBitmap[2];
114 int useTexture, textureW[2], textureH[2];
116 #define pieceToSolid(piece) &pieceBitmap[SOLID][(piece) % (int)BlackPawn]
117 #define pieceToOutline(piece) &pieceBitmap[OUTLINE][(piece) % (int)BlackPawn]
119 #define White(piece) ((int)(piece) < (int)BlackPawn)
121 char svgDir[MSG_SIZ] = SVGDIR;
123 char *crWhite = "#FFFFB0";
124 char *crBlack = "#AD5D3D";
128 } gridSegments[BOARD_RANKS + BOARD_FILES + 2];
131 SwitchWindow (int main)
133 currBoard = (main ? &mainOptions[W_BOARD] : &dualOptions[3]);
134 csBoardWindow = DRAWABLE(currBoard);
138 SelectPieces(VariantClass v)
143 for(p=0; p<=(int)WhiteKing; p++)
144 pngPieceBitmaps[i][p] = pngPieceBitmaps2[i][p]; // defaults
145 if(v == VariantShogi && BOARD_HEIGHT != 7) { // no exceptions in Tori Shogi
146 pngPieceBitmaps[i][(int)WhiteCannon] = pngPieceBitmaps2[i][(int)WhiteTokin];
147 pngPieceBitmaps[i][(int)WhiteNightrider] = pngPieceBitmaps2[i][(int)WhiteKing+2];
148 pngPieceBitmaps[i][(int)WhiteGrasshopper] = pngPieceBitmaps2[i][(int)WhiteKing+3];
149 pngPieceBitmaps[i][(int)WhiteSilver] = pngPieceBitmaps2[i][(int)WhiteKing+4];
150 pngPieceBitmaps[i][(int)WhiteQueen] = pngPieceBitmaps2[i][(int)WhiteLance];
151 pngPieceBitmaps[i][(int)WhiteFalcon] = pngPieceBitmaps2[i][(int)WhiteMonarch]; // for Sho Shogi
154 if(v == VariantGothic) {
155 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteSilver];
158 if(v == VariantSChess) {
159 pngPieceBitmaps[i][(int)WhiteAngel] = pngPieceBitmaps2[i][(int)WhiteFalcon];
160 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteAlfil];
162 if(v == VariantChuChess) {
163 pngPieceBitmaps[i][(int)WhiteNightrider] = pngPieceBitmaps2[i][(int)WhiteLion];
165 if(v == VariantChu) {
166 pngPieceBitmaps[i][(int)WhiteNightrider] = pngPieceBitmaps2[i][(int)WhiteClaw];
167 pngPieceBitmaps[i][(int)WhiteClaw] = pngPieceBitmaps2[i][(int)WhiteNightrider];
168 pngPieceBitmaps[i][(int)WhiteUnicorn] = pngPieceBitmaps2[i][(int)WhiteHorned];
169 pngPieceBitmaps[i][(int)WhiteSilver] = pngPieceBitmaps2[i][(int)WhiteStag];
170 pngPieceBitmaps[i][(int)WhiteFalcon] = pngPieceBitmaps2[i][(int)WhiteEagle];
171 pngPieceBitmaps[i][(int)WhiteHorned] = pngPieceBitmaps2[i][(int)WhiteUnicorn];
172 pngPieceBitmaps[i][(int)WhiteStag] = pngPieceBitmaps2[i][(int)WhiteSilver];
173 pngPieceBitmaps[i][(int)WhiteEagle] = pngPieceBitmaps2[i][(int)WhiteFalcon];
174 pngPieceBitmaps[i][(int)WhiteMan] = pngPieceBitmaps2[i][(int)WhiteCopper];
175 pngPieceBitmaps[i][(int)WhiteCopper] = pngPieceBitmaps2[i][(int)WhiteMan];
180 #define BoardSize int
182 InitDrawingSizes (BoardSize boardSize, int flags)
183 { // [HGM] resize is functional now, but for board format changes only (nr of ranks, files)
184 int boardWidth, boardHeight;
185 static int oldWidth, oldHeight;
186 static VariantClass oldVariant;
187 static int oldTwoBoards = 0, oldNrOfFiles = 0;
189 if(!mainOptions[W_BOARD].handle) return;
191 if(boardSize == -2 && gameInfo.variant != oldVariant
192 && oldNrOfFiles && oldNrOfFiles != BOARD_WIDTH) { // called because variant switch changed board format
193 squareSize = ((squareSize + lineGap) * oldNrOfFiles + 0.5*BOARD_WIDTH) / BOARD_WIDTH; // keep total width fixed
194 if(appData.overrideLineGap < 0) lineGap = squareSize < 37 ? 1 : squareSize < 59 ? 2 : squareSize < 116 ? 3 : 4;
195 squareSize -= lineGap;
199 oldNrOfFiles = BOARD_WIDTH;
201 if(oldTwoBoards && !twoBoards) PopDown(DummyDlg);
202 oldTwoBoards = twoBoards;
204 if(appData.overrideLineGap >= 0) lineGap = appData.overrideLineGap;
205 boardWidth = lineGap + BOARD_WIDTH * (squareSize + lineGap);
206 boardHeight = lineGap + BOARD_HEIGHT * (squareSize + lineGap);
208 if(boardWidth != oldWidth || boardHeight != oldHeight) { // do resizing stuff only if size actually changed
210 oldWidth = boardWidth; oldHeight = boardHeight;
212 CreateAnyPieces(0); // redo texture scaling
215 * Inhibit shell resizing.
217 ResizeBoardWindow(boardWidth, boardHeight, 0);
222 // [HGM] pieces: tailor piece bitmaps to needs of specific variant
225 if(gameInfo.variant != oldVariant) { // and only if variant changed
227 SelectPieces(gameInfo.variant);
229 oldVariant = gameInfo.variant;
235 ExposeRedraw (Option *graph, int x, int y, int w, int h)
236 { // copy a selected part of the buffer bitmap to the display
237 cairo_t *cr = cairo_create((cairo_surface_t *) graph->textValue);
238 cairo_set_source_surface(cr, (cairo_surface_t *) graph->choice, 0, 0);
239 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
240 cairo_rectangle(cr, x, y, w, h);
246 CreatePNGBoard (char *s, int kind)
249 static float n[2] = { 1., 1. };
250 if(!appData.useBitmaps || s == NULL || *s == 0 || *s == '*') { useTexture &= ~(kind+1); return; }
251 textureW[kind] = 0; // prevents bitmap from being used if not succesfully loaded
252 if(strstr(s, ".png")) {
253 cairo_surface_t *img = cairo_image_surface_create_from_png (s);
257 if(pngOriginalBoardBitmap[kind]) cairo_surface_destroy(pngOriginalBoardBitmap[kind]);
258 if(n[kind] != 1.) cairo_surface_destroy(pngBoardBitmap[kind]);
259 useTexture |= kind + 1; pngOriginalBoardBitmap[kind] = img;
260 w = textureW[kind] = cairo_image_surface_get_width (img);
261 h = textureH[kind] = cairo_image_surface_get_height (img);
263 while((q = strchr(p+1, '-'))) p = q; // find last '-'
264 if(strlen(p) < 11 && sscanf(p, "-%dx%d.pn%c", &f, &r, &c) == 3 && c == 'g') {
265 if(f == 0 || r == 0) f = BOARD_WIDTH, r = BOARD_HEIGHT; // 0x0 means 'fits any', so make it fit
266 textureW[kind] = (w*BOARD_WIDTH)/f; // sync cutting locations with square pattern
267 textureH[kind] = (h*BOARD_HEIGHT)/r;
268 n[kind] = r*squareSize/h; // scale to make it fit exactly vertically
270 if((p = strstr(s, "xq")) && (p == s || p[-1] == '/')) { // assume full-board image for Xiangqi
271 while(0.8*squareSize*BOARD_WIDTH > n[kind]*w || 0.8*squareSize*BOARD_HEIGHT > n[kind]*h) n[kind]++;
273 while(squareSize > n[kind]*w || squareSize > n[kind]*h) n[kind]++;
275 if(n[kind] == 1.) pngBoardBitmap[kind] = img; else {
276 // create scaled-up copy of the raw png image when it was too small
277 cairo_surface_t *cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, n[kind]*w, n[kind]*h);
278 cairo_t *cr = cairo_create(cs);
279 pngBoardBitmap[kind] = cs; textureW[kind] *= n[kind]; textureH[kind] *= n[kind];
280 // cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
281 cairo_scale(cr, n[kind], n[kind]);
282 cairo_set_source_surface (cr, img, 0, 0);
290 char *pngPieceNames[] = // must be in same order as internal piece encoding
291 { "Pawn", "Knight", "Bishop", "Rook", "Queen", "Advisor", "Elephant", "Archbishop", "Marshall", "Gold", "Commoner",
292 "Canon", "Nightrider", "CrownedBishop", "CrownedRook", "Crown", "Chancellor", "Hawk", "Lance", "Cobra", "Unicorn", "Lion",
293 "Wolf", "Camel", "Zebra", "Wizard", "Lance", "Cub",
294 "GoldPawn", "Claw", "PromoHorse", "PromoDragon", "GoldLance", "PromoSword", "Prince", "Phoenix", "Kylin", "PromoRook", "PromoHSword",
295 "Dolphin", "Sword", "Leopard", "HSword", "GoldSilver", "Princess", "HCrown", "Knight", "Elephant", "PromoBishop",
296 "Gnu", "Viking", "Iron", "Copper", "Tower", "Dragon", "King",
297 "Claw", "GoldKnight", "GoldLance", "GoldSilver", NULL
300 char *backupPiece[] = { "Princess", NULL, NULL, NULL, NULL, NULL, NULL,
301 NULL, NULL, NULL, NULL, NULL, NULL,
302 NULL, NULL, NULL, NULL, NULL, NULL, "King", "Queen", "Lion" }; // pieces that map on other when not kanji
305 LoadSVG (char *dir, int color, int piece, int retry)
308 RsvgHandle *svg=svgPieces[color][piece];
309 RsvgDimensionData svg_dimensions;
310 GError *svgerror=NULL;
311 cairo_surface_t *img;
313 char *name = (retry ? backupPiece[piece - WhiteGrasshopper] : pngPieceNames[piece]);
315 if(!name) return NULL;
317 snprintf(buf, MSG_SIZ, "%s/%s%s.svg", dir, color ? "Black" : "White", name);
320 svg = rsvg_handle_new_from_file(buf, &svgerror);
321 if(!svg && *appData.inscriptions) { // if there is no piece-specific SVG, but we make inscriptions, try general background
322 snprintf(buf, MSG_SIZ, "%s/%sTile.svg", dir, color ? "Black" : "White");
323 svg = rsvg_handle_new_from_file(buf, &svgerror);
328 rsvg_handle_get_dimensions(svg, &svg_dimensions);
329 img = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, squareSize, squareSize);
331 cr = cairo_create(img);
332 cairo_scale(cr, squareSize/(double) svg_dimensions.width, squareSize/(double) svg_dimensions.height);
333 rsvg_handle_render_cairo(svg, cr);
334 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
335 if(pngPieceImages[color][piece]) cairo_surface_destroy(pngPieceImages[color][piece]);
336 pngPieceImages[color][piece] = img;
342 if(!retry && piece >= WhiteGrasshopper && piece <= WhiteNothing) // pieces that are only different in kanji sets
343 return LoadSVG(dir, color, piece, 1);
345 g_error_free(svgerror);
350 ScaleOnePiece (int color, int piece)
354 cairo_surface_t *img, *cs;
359 svgPieces[color][piece] = LoadSVG("", color, piece, 0); // this fills pngPieceImages if we had cached svg with bitmap of wanted size
361 if(!pngPieceImages[color][piece]) { // we don't have cached bitmap (implying we did not have cached svg)
362 if(*appData.pieceDirectory) { // user specified piece directory
363 snprintf(buf, MSG_SIZ, "%s/%s%s.png", appData.pieceDirectory, color ? "Black" : "White", pngPieceNames[piece]);
364 img = cairo_image_surface_create_from_png (buf); // try if there are png pieces there
365 if(cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) { // there were not
366 svgPieces[color][piece] = LoadSVG(appData.pieceDirectory, color, piece, 0); // so try if he has svg there
367 } else pngPieceImages[color][piece] = img;
371 if(!pngPieceImages[color][piece]) { // we still did not manage to acquire a piece bitmap
372 static int warned = 0;
373 if(!(svgPieces[color][piece] = LoadSVG(svgDir, color, piece, 0)) // try to fall back on installed svg
374 && !warned && strcmp(pngPieceNames[piece], "Tile")) { // but do not complain about missing 'Tile'
375 char *msg = _("No default pieces installed!\nSelect your own using '-pieceImageDirectory'.");
376 printf("%s (%s)\n", msg, pngPieceNames[piece]); // give up
377 DisplayError(msg, 0);
378 warned = 1; // prevent error message being repeated for each piece type
382 img = pngPieceImages[color][piece];
384 // create new bitmap to hold scaled piece image (and remove any old)
385 if(pngPieceBitmaps2[color][piece]) cairo_surface_destroy (pngPieceBitmaps2[color][piece]);
386 pngPieceBitmaps2[color][piece] = cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
390 // scaled copying of the raw png image
391 cr = cairo_create(cs);
392 w = cairo_image_surface_get_width (img);
393 h = cairo_image_surface_get_height (img);
394 cairo_scale(cr, squareSize/w, squareSize/h);
395 cairo_set_source_surface (cr, img, 0, 0);
399 if(!appData.trueColors || !*appData.pieceDirectory) { // operate on bitmap to color it (king-size hack...)
400 int stride = cairo_image_surface_get_stride(cs)/4;
401 int *buf = (int *) cairo_image_surface_get_data(cs);
403 sscanf(color ? appData.blackPieceColor+1 : appData.whitePieceColor+1, "%x", &p); // replacement color
404 cairo_surface_flush(cs);
405 for(i=0; i<squareSize; i++) for(j=0; j<squareSize; j++) {
408 unsigned int c = buf[i*stride + j];
409 a = c >> 24; r = c >> 16 & 255; // alpha and red, where red is the 'white' weight, since white is #FFFFCC in the source images
410 f = (color ? a - r : r)/255.; // fraction of black or white in the mix that has to be replaced
411 buf[i*stride + j] = c & 0xFF000000; // alpha channel is kept at same opacity
412 buf[i*stride + j] += ((int)(f*(p&0xFF0000)) & 0xFF0000) + ((int)(f*(p&0xFF00)) & 0xFF00) + (int)(f*(p&0xFF)); // add desired fraction of new color
413 if(color) buf[i*stride + j] += r | r << 8 | r << 16; // details on black pieces get their weight added in pure white
414 if(appData.monoMode) {
415 if(a < 64) buf[i*stride + j] = 0; // if not opaque enough, totally transparent
416 else if(2*r < a) buf[i*stride + j] = 0xFF000000; // if not light enough, totally black
417 else buf[i*stride + j] = 0xFFFFFFFF; // otherwise white
420 cairo_surface_mark_dirty(cs);
429 for(p=0; pngPieceNames[p]; p++) {
433 SelectPieces(gameInfo.variant);
437 CreateAnyPieces (int p)
438 { // [HGM] taken out of main
439 if(p) CreatePNGPieces();
440 CreatePNGBoard(appData.liteBackTextureFile, 1);
441 CreatePNGBoard(appData.darkBackTextureFile, 0);
445 InitDrawingParams (int reloadPieces)
449 for(i=0; i<2; i++) for(p=0; p<BlackPawn+4; p++) {
450 if(pngPieceImages[i][p]) cairo_surface_destroy(pngPieceImages[i][p]);
451 pngPieceImages[i][p] = NULL;
452 if(svgPieces[i][p]) rsvg_handle_close(svgPieces[i][p], NULL);
453 svgPieces[i][p] = NULL;
458 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
461 Color (char *col, int n)
464 sscanf(col, "#%x", &c);
470 SetPen (cairo_t *cr, float w, char *col, int dash)
472 static const double dotted[] = {4.0, 4.0};
473 static int len = sizeof(dotted) / sizeof(dotted[0]);
474 cairo_set_line_width (cr, w);
475 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
476 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
479 void DrawSeekAxis( int x, int y, int xTo, int yTo )
484 cr = cairo_create (csBoardWindow);
486 cairo_move_to (cr, x, y);
487 cairo_line_to(cr, xTo, yTo );
489 SetPen(cr, 2, "#000000", 0);
494 GraphExpose(currBoard, x-1, yTo-1, xTo-x+2, y-yTo+2);
497 void DrawSeekBackground( int left, int top, int right, int bottom )
499 cairo_t *cr = cairo_create (csBoardWindow);
501 cairo_rectangle (cr, left, top, right-left, bottom-top);
503 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
508 GraphExpose(currBoard, left, top, right-left, bottom-top);
511 void DrawSeekText(char *buf, int x, int y)
513 cairo_t *cr = cairo_create (csBoardWindow);
515 cairo_select_font_face (cr, "Sans",
516 CAIRO_FONT_SLANT_NORMAL,
517 CAIRO_FONT_WEIGHT_NORMAL);
519 cairo_set_font_size (cr, 12.0);
521 cairo_move_to (cr, x, y+4);
522 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
523 cairo_show_text( cr, buf);
527 GraphExpose(currBoard, x-5, y-10, 60, 15);
530 void DrawSeekDot(int x, int y, int colorNr)
532 cairo_t *cr = cairo_create (csBoardWindow);
533 int square = colorNr & 0x80;
537 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
539 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
541 SetPen(cr, 2, "#000000", 0);
542 cairo_stroke_preserve(cr);
544 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
545 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
546 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
552 GraphExpose(currBoard, x-squareSize/8, y-squareSize/8, 2*(squareSize/8), 2*(squareSize/8));
556 InitDrawingHandle (Option *opt)
558 csBoardWindow = DRAWABLE(opt);
566 if (lineGap == 0) return;
568 /* [HR] Split this into 2 loops for non-square boards. */
570 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
571 gridSegments[i].x1 = 0;
573 lineGap + BOARD_WIDTH * (squareSize + lineGap);
574 gridSegments[i].y1 = gridSegments[i].y2
575 = lineGap / 2 + (i * (squareSize + lineGap));
578 for (j = 0; j < BOARD_WIDTH + 1; j++) {
579 gridSegments[j + i].y1 = 0;
580 gridSegments[j + i].y2 =
581 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
582 gridSegments[j + i].x1 = gridSegments[j + i].x2
583 = lineGap / 2 + (j * (squareSize + lineGap));
590 /* draws a grid starting around Nx, Ny squares starting at x,y */
592 float odd = (lineGap & 1)/2.;
596 cr = cairo_create (csBoardWindow);
598 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
599 SetPen(cr, lineGap, "#000000", 0);
602 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
604 int h = (gridSegments[i].y1 == gridSegments[i].y2); // horizontal
605 cairo_move_to (cr, gridSegments[i].x1 + !h*odd, gridSegments[i].y1 + h*odd);
606 cairo_line_to (cr, gridSegments[i].x2 + !h*odd, gridSegments[i].y2 + h*odd);
617 DrawBorder (int x, int y, int type, int odd)
623 case 0: col = "#000000"; break;
624 case 1: col = appData.highlightSquareColor; break;
625 case 2: col = appData.premoveHighlightColor; break;
626 default: col = "#808080"; break; // cannot happen
628 cr = cairo_create(csBoardWindow);
629 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
630 cairo_rectangle(cr, x+odd/2., y+odd/2., squareSize+lineGap, squareSize+lineGap);
631 SetPen(cr, lineGap, col, 0);
634 GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap+odd, squareSize+2*lineGap+odd);
638 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
640 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
641 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
643 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
644 if(textureW[kind] < W*squareSize)
645 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
647 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
648 if(textureH[kind] < H*squareSize)
649 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
651 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
656 DrawLogo (Option *opt, void *logo)
658 cairo_surface_t *img;
663 cr = cairo_create(DRAWABLE(opt));
664 cairo_rectangle (cr, 0, 0, opt->max, opt->value);
665 cairo_set_source_rgba(cr, 0.5, 0.5, 0.5, 1.0);
666 cairo_fill(cr); // paint background in case logo does not exist
668 img = cairo_image_surface_create_from_png (logo);
669 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
670 w = cairo_image_surface_get_width (img);
671 h = cairo_image_surface_get_height (img);
672 // cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
673 cairo_scale(cr, (float)opt->max/w, (float)opt->value/h);
674 cairo_set_source_surface (cr, img, 0, 0);
677 cairo_surface_destroy (img);
680 GraphExpose(opt, 0, 0, opt->max, opt->value);
684 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
685 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
689 cr = cairo_create (dest);
691 if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) {
692 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
693 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
694 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
697 } else { // evenly colored squares
700 case 0: col = appData.darkSquareColor; break;
701 case 1: col = appData.lightSquareColor; break;
702 case 2: col = "#000000"; break;
703 default: col = "#808080"; break; // cannot happen
705 SetPen(cr, 2.0, col, 0);
706 cairo_rectangle (cr, fac*x, fac*y, squareSize, squareSize);
707 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
714 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
719 if ((int)piece < (int) BlackPawn) {
725 if(appData.upsideDown && flipView) kind = 1 - kind; // swap white and black pieces
726 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
727 cr = cairo_create (dest);
728 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
733 static char *markerColor[8] = { "#FFFF00", "#FF0000", "#00FF00", "#0000FF", "#00FFFF", "#FF00FF", "#FFFFFF", "#000000" };
736 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
740 cr = cairo_create(cs);
741 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
742 if(appData.monoMode) {
743 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
744 cairo_stroke_preserve(cr);
745 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
747 SetPen(cr, 2, markerColor[marker-1], 0);
755 DrawDot (int marker, int x, int y, int r)
756 { // used for atomic captures; no need to draw on backup
757 DoDrawDot(csBoardWindow, marker, x, y, r);
758 GraphExpose(currBoard, x-r, y-r, 2*r, 2*r);
762 DrawUnicode (cairo_surface_t *canvas, char *string, int x, int y, char id, int flip)
764 // cairo_text_extents_t te;
768 PangoFontDescription *desc;
770 char fontName[MSG_SIZ];
772 cr = cairo_create (canvas);
773 layout = pango_cairo_create_layout(cr);
774 pango_layout_set_text(layout, string, -1);
775 snprintf(fontName, MSG_SIZ, "Sans Normal %dpx", 5*squareSize/8);
776 desc = pango_font_description_from_string(fontName);
777 pango_layout_set_font_description(layout, desc);
778 pango_font_description_free(desc);
779 pango_layout_get_pixel_extents(layout, NULL, &r);
780 cairo_translate(cr, x + squareSize/2 - s*r.width/2, y + (8+s)*squareSize/16 - s*r.height/2);
781 if(s < 0) cairo_rotate(cr, G_PI);
782 cairo_set_source_rgb(cr, (id == '+' ? 1.0 : 0.0), 0.0, 0.0);
783 pango_cairo_update_layout(cr, layout);
784 pango_cairo_show_layout(cr, layout);
785 g_object_unref(layout);
790 DrawText (char *string, int x, int y, int align)
793 cairo_text_extents_t te;
796 cr = cairo_create (csBoardWindow);
797 cairo_select_font_face (cr, "Sans",
798 CAIRO_FONT_SLANT_NORMAL,
799 CAIRO_FONT_WEIGHT_BOLD);
801 cairo_set_font_size (cr, align < 0 ? 2*squareSize/3 : squareSize/4);
802 // calculate where it goes
803 cairo_text_extents (cr, string, &te);
806 xx += squareSize - te.width - te.x_bearing - 1;
807 yy += squareSize - te.height - te.y_bearing - 1;
808 } else if (align == 2) {
809 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
810 } else if (align == 3) {
811 xx += squareSize - te.width -te.x_bearing - 1;
812 yy += -te.y_bearing + 3;
813 } else if (align == 4) {
814 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
817 cairo_move_to (cr, xx-1, yy);
818 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
819 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
820 cairo_show_text (cr, string);
825 InscribeKanji (cairo_surface_t *canvas, ChessSquare piece, int x, int y)
827 char *p, *q, buf[10];
828 int n, flip = appData.upsideDown && flipView == (piece < BlackPawn);
829 if(piece == EmptySquare) return;
830 if(piece >= BlackPawn) piece = BLACK_TO_WHITE piece;
831 p = appData.inscriptions;
833 while(piece > WhitePawn) {
834 if(*p++ == NULLCHAR) {
835 if(n != WhiteKing) return;
840 while((*p & 0xC0) == 0x80) p++; // skip UTF-8 continuation bytes
844 for(q=buf; (*++q & 0xC0) == 0x80;);
846 DrawUnicode(canvas, buf, x, y, PieceToChar(n), flip);
850 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *tString, char *bString, int align)
851 { // basic front-end board-draw function: takes care of everything that can be in square:
852 // piece, background, coordinate/count, marker dot
854 if (piece == EmptySquare) {
855 BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
857 pngDrawPiece(csBoardWindow, piece, square_color, x, y);
858 if(appData.inscriptions[0]) InscribeKanji(csBoardWindow, piece, x, y);
861 if(align) { // square carries inscription (coord or piece count)
862 if(align > 1) DrawText(tString, x, y, align); // top (rank or count)
863 if(bString && *bString) DrawText(bString, x, y, 1); // bottom (always lower right file ID)
866 if(marker) { // print fat marker dot, if requested
867 DoDrawDot(csBoardWindow, marker, x + squareSize/4, y+squareSize/4, squareSize/2);
871 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
873 /* Masks for XPM pieces. Black and white pieces can have
874 different shapes, but in the interest of retaining my
875 sanity pieces must have the same outline on both light
876 and dark squares, and all pieces must use the same
877 background square colors/images. */
879 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
882 InitAnimState (AnimNr anr)
884 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
885 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
886 c_animBufs[anr+4] = csBoardWindow;
887 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
888 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
895 InitAnimState(Player);
899 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
901 static cairo_t *pieceSource;
902 pieceSource = cairo_create (dest);
903 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
904 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
905 else cairo_paint(pieceSource);
906 cairo_destroy (pieceSource);
907 if(appData.inscriptions[0]) InscribeKanji(dest, piece, 0, 0);
911 InsertPiece (AnimNr anr, ChessSquare piece)
913 CairoOverlayPiece(piece, c_animBufs[anr]);
917 DrawBlank (AnimNr anr, int x, int y, int startColor)
919 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
922 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
923 int srcX, int srcY, int width, int height, int destX, int destY)
926 c_animBufs[anr+4] = csBoardWindow;
927 cr = cairo_create (c_animBufs[anr+destBuf]);
928 cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY);
929 cairo_rectangle (cr, destX, destY, width, height);
932 if(c_animBufs[anr+destBuf] == csBoardWindow) // suspect that GTK needs this!
933 GraphExpose(currBoard, destX, destY, width, height);
937 SetDragPiece (AnimNr anr, ChessSquare piece)
941 /* [AS] Arrow highlighting support */
944 DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr)
948 cr = cairo_create (cs);
949 cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y);
951 cairo_line_to(cr, arrow[i].x, arrow[i].y);
953 if(appData.monoMode) { // should we always outline arrow?
954 cairo_line_to(cr, arrow[0].x, arrow[0].y);
955 SetPen(cr, 2, "#000000", 0);
956 cairo_stroke_preserve(cr);
958 SetPen(cr, 2, appData.highlightSquareColor, 0);
966 DrawPolygon (Pnt arrow[], int nr)
968 DoDrawPolygon(csBoardWindow, arrow, nr);
969 // if(!dual) DoDrawPolygon(csBoardBackup, arrow, nr);
972 //-------------------- Eval Graph drawing routines (formerly in xevalgraph.h) --------------------
975 ChoosePen(cairo_t *cr, int i)
979 SetPen(cr, 1.0, "#000000", 0);
982 SetPen(cr, 1.0, "#A0A0A0", 1);
985 SetPen(cr, 1.0, "#0000FF", 1);
988 SetPen(cr, 3.0, crWhite, 0);
991 SetPen(cr, 3.0, crBlack, 0);
994 SetPen(cr, 3.0, "#E0E0F0", 0);
999 // [HGM] front-end, added as wrapper to avoid use of LineTo and MoveToEx in other routines (so they can be back-end)
1001 DrawSegment (int x, int y, int *lastX, int *lastY, int penType)
1003 static int curX, curY;
1005 if(penType != PEN_NONE) {
1006 cairo_t *cr = cairo_create(DRAWABLE(disp));
1007 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
1008 cairo_move_to (cr, curX, curY);
1009 cairo_line_to (cr, x,y);
1010 ChoosePen(cr, penType);
1015 if(lastX != NULL) { *lastX = curX; *lastY = curY; }
1019 // front-end wrapper for drawing functions to do rectangles
1021 DrawRectangle (int left, int top, int right, int bottom, int side, int style)
1025 cr = cairo_create (DRAWABLE(disp));
1026 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
1027 cairo_rectangle (cr, left, top, right-left, bottom-top);
1030 case 0: ChoosePen(cr, PEN_BOLDWHITE); break;
1031 case 1: ChoosePen(cr, PEN_BOLDBLACK); break;
1032 case 2: ChoosePen(cr, PEN_BACKGD); break;
1038 cairo_rectangle (cr, left, top, right-left-1, bottom-top-1);
1039 ChoosePen(cr, PEN_BLACK);
1046 // front-end wrapper for putting text in graph
1048 DrawEvalText (char *buf, int cbBuf, int y)
1050 // the magic constants 8 and 5 should really be derived from the font size somehow
1051 cairo_text_extents_t extents;
1052 cairo_t *cr = cairo_create(DRAWABLE(disp));
1054 /* GTK-TODO this has to go into the font-selection */
1055 cairo_select_font_face (cr, "Sans",
1056 CAIRO_FONT_SLANT_NORMAL,
1057 CAIRO_FONT_WEIGHT_NORMAL);
1058 cairo_set_font_size (cr, 12.0);
1061 cairo_text_extents (cr, buf, &extents);
1063 cairo_move_to (cr, MarginX - 2 - 8*cbBuf, y+5);
1064 cairo_text_path (cr, buf);
1065 cairo_set_source_rgb (cr, 0.0, 0.0, 0);
1066 cairo_fill_preserve (cr);
1067 cairo_set_source_rgb (cr, 0, 1.0, 0);
1068 cairo_set_line_width (cr, 0.1);