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 && BOARD_HEIGHT != 7) { // no exceptions in Tori Shogi
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 textureW[kind] = 0; // prevents bitmap from being used if not succesfully loaded
245 if(strstr(s, ".png")) {
246 cairo_surface_t *img = cairo_image_surface_create_from_png (s);
250 if(pngOriginalBoardBitmap[kind]) cairo_surface_destroy(pngOriginalBoardBitmap[kind]);
251 if(n[kind] != 1.) cairo_surface_destroy(pngBoardBitmap[kind]);
252 useTexture |= kind + 1; pngOriginalBoardBitmap[kind] = img;
253 w = textureW[kind] = cairo_image_surface_get_width (img);
254 h = textureH[kind] = cairo_image_surface_get_height (img);
256 while((q = strchr(p+1, '-'))) p = q; // find last '-'
257 if(strlen(p) < 11 && sscanf(p, "-%dx%d.pn%c", &f, &r, &c) == 3 && c == 'g') {
258 if(f == 0 || r == 0) f = BOARD_WIDTH, r = BOARD_HEIGHT; // 0x0 means 'fits any', so make it fit
259 textureW[kind] = (w*BOARD_WIDTH)/f; // sync cutting locations with square pattern
260 textureH[kind] = (h*BOARD_HEIGHT)/r;
261 n[kind] = r*squareSize/h; // scale to make it fit exactly vertically
263 if((p = strstr(s, "xq")) && (p == s || p[-1] == '/')) { // assume full-board image for Xiangqi
264 while(0.8*squareSize*BOARD_WIDTH > n[kind]*w || 0.8*squareSize*BOARD_HEIGHT > n[kind]*h) n[kind]++;
266 while(squareSize > n[kind]*w || squareSize > n[kind]*h) n[kind]++;
268 if(n[kind] == 1.) pngBoardBitmap[kind] = img; else {
269 // create scaled-up copy of the raw png image when it was too small
270 cairo_surface_t *cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, n[kind]*w, n[kind]*h);
271 cairo_t *cr = cairo_create(cs);
272 pngBoardBitmap[kind] = cs; textureW[kind] *= n[kind]; textureH[kind] *= n[kind];
273 // cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
274 cairo_scale(cr, n[kind], n[kind]);
275 cairo_set_source_surface (cr, img, 0, 0);
283 char *pngPieceNames[] = // must be in same order as internal piece encoding
284 { "Pawn", "Knight", "Bishop", "Rook", "Queen", "Advisor", "Elephant", "Archbishop", "Marshall", "Gold", "Commoner",
285 "Canon", "Nightrider", "CrownedBishop", "CrownedRook", "Princess", "Chancellor", "Hawk", "Lance", "Cobra", "Unicorn", "Lion",
286 "GoldPawn", "HSword", "PromoHorse", "PromoDragon", "Leopard", "PromoSword", "Prince", "Phoenix", "Kylin", "PromoRook", "PromoHSword",
287 "Dolphin", "Chancellor", "Unicorn", "Hawk", "Sword", "Princess", "HCrown", "Knight", "Elephant", "PromoBishop", "King",
288 "Claw", "GoldKnight", "GoldLance", "GoldSilver", NULL
291 char *backupPiece[] = { "King", "Queen", "Lion" }; // pieces that map on other when not kanji
294 LoadSVG (char *dir, int color, int piece, int retry)
297 RsvgHandle *svg=svgPieces[color][piece];
298 RsvgDimensionData svg_dimensions;
299 GError *svgerror=NULL;
300 cairo_surface_t *img;
303 snprintf(buf, MSG_SIZ, "%s/%s%s.svg", dir, color ? "Black" : "White",
304 retry ? backupPiece[piece - WhiteMonarch] : pngPieceNames[piece]);
306 if(svg || *dir && (svg = rsvg_handle_new_from_file(buf, &svgerror))) {
308 rsvg_handle_get_dimensions(svg, &svg_dimensions);
309 img = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, squareSize, squareSize);
311 cr = cairo_create(img);
312 cairo_scale(cr, squareSize/(double) svg_dimensions.width, squareSize/(double) svg_dimensions.height);
313 rsvg_handle_render_cairo(svg, cr);
314 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
315 if(pngPieceImages[color][piece]) cairo_surface_destroy(pngPieceImages[color][piece]);
316 pngPieceImages[color][piece] = img;
322 if(!retry && piece >= WhiteMonarch && piece <= WhiteNothing) // pieces that are only different in kanji sets
323 return LoadSVG(dir, color, piece, 1);
325 g_error_free(svgerror);
330 ScaleOnePiece (int color, int piece)
334 cairo_surface_t *img, *cs;
339 svgPieces[color][piece] = LoadSVG("", color, piece, 0); // this fills pngPieceImages if we had cached svg with bitmap of wanted size
341 if(!pngPieceImages[color][piece]) { // we don't have cached bitmap (implying we did not have cached svg)
342 if(*appData.pieceDirectory) { // user specified piece directory
343 snprintf(buf, MSG_SIZ, "%s/%s%s.png", appData.pieceDirectory, color ? "Black" : "White", pngPieceNames[piece]);
344 img = cairo_image_surface_create_from_png (buf); // try if there are png pieces there
345 if(cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) { // there were not
346 svgPieces[color][piece] = LoadSVG(appData.pieceDirectory, color, piece, 0); // so try if he has svg there
347 } else pngPieceImages[color][piece] = img;
351 if(!pngPieceImages[color][piece]) { // we still did not manage to acquire a piece bitmap
352 static int warned = 0;
353 if(!(svgPieces[color][piece] = LoadSVG(svgDir, color, piece, 0)) && !warned) { // try to fall back on installed svg
354 char *msg = _("No default pieces installed!\nSelect your own using '-pieceImageDirectory'.");
355 printf("%s\n", msg); // give up
356 DisplayError(msg, 0);
357 warned = 1; // prevent error message being repeated for each piece type
361 img = pngPieceImages[color][piece];
363 // create new bitmap to hold scaled piece image (and remove any old)
364 if(pngPieceBitmaps2[color][piece]) cairo_surface_destroy (pngPieceBitmaps2[color][piece]);
365 pngPieceBitmaps2[color][piece] = cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
369 // scaled copying of the raw png image
370 cr = cairo_create(cs);
371 w = cairo_image_surface_get_width (img);
372 h = cairo_image_surface_get_height (img);
373 cairo_scale(cr, squareSize/w, squareSize/h);
374 cairo_set_source_surface (cr, img, 0, 0);
378 if(!appData.trueColors || !*appData.pieceDirectory) { // operate on bitmap to color it (king-size hack...)
379 int stride = cairo_image_surface_get_stride(cs)/4;
380 int *buf = (int *) cairo_image_surface_get_data(cs);
382 sscanf(color ? appData.blackPieceColor+1 : appData.whitePieceColor+1, "%x", &p); // replacement color
383 cairo_surface_flush(cs);
384 for(i=0; i<squareSize; i++) for(j=0; j<squareSize; j++) {
387 unsigned int c = buf[i*stride + j];
388 a = c >> 24; r = c >> 16 & 255; // alpha and red, where red is the 'white' weight, since white is #FFFFCC in the source images
389 f = (color ? a - r : r)/255.; // fraction of black or white in the mix that has to be replaced
390 buf[i*stride + j] = c & 0xFF000000; // alpha channel is kept at same opacity
391 buf[i*stride + j] += ((int)(f*(p&0xFF0000)) & 0xFF0000) + ((int)(f*(p&0xFF00)) & 0xFF00) + (int)(f*(p&0xFF)); // add desired fraction of new color
392 if(color) buf[i*stride + j] += r | r << 8 | r << 16; // details on black pieces get their weight added in pure white
393 if(appData.monoMode) {
394 if(a < 64) buf[i*stride + j] = 0; // if not opaque enough, totally transparent
395 else if(2*r < a) buf[i*stride + j] = 0xFF000000; // if not light enough, totally black
396 else buf[i*stride + j] = 0xFFFFFFFF; // otherwise white
399 cairo_surface_mark_dirty(cs);
408 for(p=0; pngPieceNames[p]; p++) {
412 SelectPieces(gameInfo.variant);
416 CreateAnyPieces (int p)
417 { // [HGM] taken out of main
418 if(p) CreatePNGPieces();
419 CreatePNGBoard(appData.liteBackTextureFile, 1);
420 CreatePNGBoard(appData.darkBackTextureFile, 0);
424 InitDrawingParams (int reloadPieces)
428 for(i=0; i<2; i++) for(p=0; p<BlackPawn+4; p++) {
429 if(pngPieceImages[i][p]) cairo_surface_destroy(pngPieceImages[i][p]);
430 pngPieceImages[i][p] = NULL;
431 if(svgPieces[i][p]) rsvg_handle_close(svgPieces[i][p], NULL);
432 svgPieces[i][p] = NULL;
437 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
440 Color (char *col, int n)
443 sscanf(col, "#%x", &c);
449 SetPen (cairo_t *cr, float w, char *col, int dash)
451 static const double dotted[] = {4.0, 4.0};
452 static int len = sizeof(dotted) / sizeof(dotted[0]);
453 cairo_set_line_width (cr, w);
454 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
455 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
458 void DrawSeekAxis( int x, int y, int xTo, int yTo )
463 cr = cairo_create (csBoardWindow);
465 cairo_move_to (cr, x, y);
466 cairo_line_to(cr, xTo, yTo );
468 SetPen(cr, 2, "#000000", 0);
473 GraphExpose(currBoard, x-1, yTo-1, xTo-x+2, y-yTo+2);
476 void DrawSeekBackground( int left, int top, int right, int bottom )
478 cairo_t *cr = cairo_create (csBoardWindow);
480 cairo_rectangle (cr, left, top, right-left, bottom-top);
482 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
487 GraphExpose(currBoard, left, top, right-left, bottom-top);
490 void DrawSeekText(char *buf, int x, int y)
492 cairo_t *cr = cairo_create (csBoardWindow);
494 cairo_select_font_face (cr, "Sans",
495 CAIRO_FONT_SLANT_NORMAL,
496 CAIRO_FONT_WEIGHT_NORMAL);
498 cairo_set_font_size (cr, 12.0);
500 cairo_move_to (cr, x, y+4);
501 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
502 cairo_show_text( cr, buf);
506 GraphExpose(currBoard, x-5, y-10, 60, 15);
509 void DrawSeekDot(int x, int y, int colorNr)
511 cairo_t *cr = cairo_create (csBoardWindow);
512 int square = colorNr & 0x80;
516 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
518 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
520 SetPen(cr, 2, "#000000", 0);
521 cairo_stroke_preserve(cr);
523 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
524 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
525 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
531 GraphExpose(currBoard, x-squareSize/8, y-squareSize/8, 2*(squareSize/8), 2*(squareSize/8));
535 InitDrawingHandle (Option *opt)
537 csBoardWindow = DRAWABLE(opt);
545 if (lineGap == 0) return;
547 /* [HR] Split this into 2 loops for non-square boards. */
549 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
550 gridSegments[i].x1 = 0;
552 lineGap + BOARD_WIDTH * (squareSize + lineGap);
553 gridSegments[i].y1 = gridSegments[i].y2
554 = lineGap / 2 + (i * (squareSize + lineGap));
557 for (j = 0; j < BOARD_WIDTH + 1; j++) {
558 gridSegments[j + i].y1 = 0;
559 gridSegments[j + i].y2 =
560 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
561 gridSegments[j + i].x1 = gridSegments[j + i].x2
562 = lineGap / 2 + (j * (squareSize + lineGap));
569 /* draws a grid starting around Nx, Ny squares starting at x,y */
571 float odd = (lineGap & 1)/2.;
575 cr = cairo_create (csBoardWindow);
577 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
578 SetPen(cr, lineGap, "#000000", 0);
581 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
583 int h = (gridSegments[i].y1 == gridSegments[i].y2); // horizontal
584 cairo_move_to (cr, gridSegments[i].x1 + !h*odd, gridSegments[i].y1 + h*odd);
585 cairo_line_to (cr, gridSegments[i].x2 + !h*odd, gridSegments[i].y2 + h*odd);
596 DrawBorder (int x, int y, int type, int odd)
602 case 0: col = "#000000"; break;
603 case 1: col = appData.highlightSquareColor; break;
604 case 2: col = appData.premoveHighlightColor; break;
605 default: col = "#808080"; break; // cannot happen
607 cr = cairo_create(csBoardWindow);
608 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
609 cairo_rectangle(cr, x+odd/2., y+odd/2., squareSize+lineGap, squareSize+lineGap);
610 SetPen(cr, lineGap, col, 0);
613 GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap+odd, squareSize+2*lineGap+odd);
617 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
619 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
620 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
622 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
623 if(textureW[kind] < W*squareSize)
624 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
626 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
627 if(textureH[kind] < H*squareSize)
628 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
630 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
635 DrawLogo (Option *opt, void *logo)
637 cairo_surface_t *img;
641 if(!logo || !opt) return;
642 img = cairo_image_surface_create_from_png (logo);
643 w = cairo_image_surface_get_width (img);
644 h = cairo_image_surface_get_height (img);
645 cr = cairo_create(DRAWABLE(opt));
646 // cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
647 cairo_scale(cr, (float)opt->max/w, (float)opt->value/h);
648 cairo_set_source_surface (cr, img, 0, 0);
651 cairo_surface_destroy (img);
652 GraphExpose(opt, 0, 0, appData.logoSize, appData.logoSize/2);
656 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
657 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
661 cr = cairo_create (dest);
663 if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) {
664 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
665 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
666 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
669 } else { // evenly colored squares
672 case 0: col = appData.darkSquareColor; break;
673 case 1: col = appData.lightSquareColor; break;
674 case 2: col = "#000000"; break;
675 default: col = "#808080"; break; // cannot happen
677 SetPen(cr, 2.0, col, 0);
678 cairo_rectangle (cr, fac*x, fac*y, squareSize, squareSize);
679 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
686 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
691 if ((int)piece < (int) BlackPawn) {
697 if(appData.upsideDown && flipView) kind = 1 - kind; // swap white and black pieces
698 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
699 cr = cairo_create (dest);
700 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
705 static char *markerColor[8] = { "#FFFF00", "#FF0000", "#00FF00", "#0000FF", "#00FFFF", "#FF00FF", "#FFFFFF", "#000000" };
708 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
712 cr = cairo_create(cs);
713 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
714 if(appData.monoMode) {
715 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
716 cairo_stroke_preserve(cr);
717 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
719 SetPen(cr, 2, markerColor[marker-1], 0);
727 DrawDot (int marker, int x, int y, int r)
728 { // used for atomic captures; no need to draw on backup
729 DoDrawDot(csBoardWindow, marker, x, y, r);
730 GraphExpose(currBoard, x-r, y-r, 2*r, 2*r);
734 DrawText (char *string, int x, int y, int align)
737 cairo_text_extents_t te;
740 cr = cairo_create (csBoardWindow);
741 cairo_select_font_face (cr, "Sans",
742 CAIRO_FONT_SLANT_NORMAL,
743 CAIRO_FONT_WEIGHT_BOLD);
745 cairo_set_font_size (cr, align < 0 ? 2*squareSize/3 : squareSize/4);
746 // calculate where it goes
747 cairo_text_extents (cr, string, &te);
750 xx += squareSize - te.width - te.x_bearing - 1;
751 yy += squareSize - te.height - te.y_bearing - 1;
752 } else if (align == 2) {
753 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
754 } else if (align == 3) {
755 xx += squareSize - te.width -te.x_bearing - 1;
756 yy += -te.y_bearing + 3;
757 } else if (align == 4) {
758 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
759 } else if (align < 0) {
760 xx += squareSize/2 - te.width/2, yy += 9*squareSize/16 - te.y_bearing/2;
763 cairo_move_to (cr, xx-1, yy);
764 if(align == -2) cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); else
765 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
766 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
767 cairo_show_text (cr, string);
772 InscribeKanji (ChessSquare piece, int x, int y)
774 char *p, *q, buf[10];
776 if(piece == EmptySquare) return;
777 if(piece >= BlackPawn) piece = BLACK_TO_WHITE piece;
778 p = appData.inscriptions;
780 while(piece > WhitePawn) {
781 if(*p++ == NULLCHAR) {
782 if(n != WhiteKing) return;
787 while((*p & 0xC0) == 0x80) p++; // skip UTF-8 continuation bytes
791 for(q=buf; (*++q & 0xC0) == 0x80;);
793 DrawText(buf, x, y, n > WhiteLion ? -2 : -1);
797 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *tString, char *bString, int align)
798 { // basic front-end board-draw function: takes care of everything that can be in square:
799 // piece, background, coordinate/count, marker dot
801 if (piece == EmptySquare) {
802 BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
804 pngDrawPiece(csBoardWindow, piece, square_color, x, y);
805 if(appData.inscriptions[0]) InscribeKanji(piece, x, y);
808 if(align) { // square carries inscription (coord or piece count)
809 if(align > 1) DrawText(tString, x, y, align); // top (rank or count)
810 if(bString && *bString) DrawText(bString, x, y, 1); // bottom (always lower right file ID)
813 if(marker) { // print fat marker dot, if requested
814 DoDrawDot(csBoardWindow, marker, x + squareSize/4, y+squareSize/4, squareSize/2);
818 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
820 /* Masks for XPM pieces. Black and white pieces can have
821 different shapes, but in the interest of retaining my
822 sanity pieces must have the same outline on both light
823 and dark squares, and all pieces must use the same
824 background square colors/images. */
826 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
829 InitAnimState (AnimNr anr)
831 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
832 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
833 c_animBufs[anr+4] = csBoardWindow;
834 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
835 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
842 InitAnimState(Player);
846 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
848 static cairo_t *pieceSource;
849 pieceSource = cairo_create (dest);
850 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
851 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
852 else cairo_paint(pieceSource);
853 cairo_destroy (pieceSource);
857 InsertPiece (AnimNr anr, ChessSquare piece)
859 CairoOverlayPiece(piece, c_animBufs[anr]);
863 DrawBlank (AnimNr anr, int x, int y, int startColor)
865 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
868 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
869 int srcX, int srcY, int width, int height, int destX, int destY)
872 c_animBufs[anr+4] = csBoardWindow;
873 cr = cairo_create (c_animBufs[anr+destBuf]);
874 cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY);
875 cairo_rectangle (cr, destX, destY, width, height);
878 if(c_animBufs[anr+destBuf] == csBoardWindow) // suspect that GTK needs this!
879 GraphExpose(currBoard, destX, destY, width, height);
883 SetDragPiece (AnimNr anr, ChessSquare piece)
887 /* [AS] Arrow highlighting support */
890 DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr)
894 cr = cairo_create (cs);
895 cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y);
897 cairo_line_to(cr, arrow[i].x, arrow[i].y);
899 if(appData.monoMode) { // should we always outline arrow?
900 cairo_line_to(cr, arrow[0].x, arrow[0].y);
901 SetPen(cr, 2, "#000000", 0);
902 cairo_stroke_preserve(cr);
904 SetPen(cr, 2, appData.highlightSquareColor, 0);
912 DrawPolygon (Pnt arrow[], int nr)
914 DoDrawPolygon(csBoardWindow, arrow, nr);
915 // if(!dual) DoDrawPolygon(csBoardBackup, arrow, nr);
918 //-------------------- Eval Graph drawing routines (formerly in xevalgraph.h) --------------------
921 ChoosePen(cairo_t *cr, int i)
925 SetPen(cr, 1.0, "#000000", 0);
928 SetPen(cr, 1.0, "#A0A0A0", 1);
931 SetPen(cr, 1.0, "#0000FF", 1);
934 SetPen(cr, 3.0, crWhite, 0);
937 SetPen(cr, 3.0, crBlack, 0);
940 SetPen(cr, 3.0, "#E0E0F0", 0);
945 // [HGM] front-end, added as wrapper to avoid use of LineTo and MoveToEx in other routines (so they can be back-end)
947 DrawSegment (int x, int y, int *lastX, int *lastY, int penType)
949 static int curX, curY;
951 if(penType != PEN_NONE) {
952 cairo_t *cr = cairo_create(DRAWABLE(disp));
953 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
954 cairo_move_to (cr, curX, curY);
955 cairo_line_to (cr, x,y);
956 ChoosePen(cr, penType);
961 if(lastX != NULL) { *lastX = curX; *lastY = curY; }
965 // front-end wrapper for drawing functions to do rectangles
967 DrawRectangle (int left, int top, int right, int bottom, int side, int style)
971 cr = cairo_create (DRAWABLE(disp));
972 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
973 cairo_rectangle (cr, left, top, right-left, bottom-top);
976 case 0: ChoosePen(cr, PEN_BOLDWHITE); break;
977 case 1: ChoosePen(cr, PEN_BOLDBLACK); break;
978 case 2: ChoosePen(cr, PEN_BACKGD); break;
984 cairo_rectangle (cr, left, top, right-left-1, bottom-top-1);
985 ChoosePen(cr, PEN_BLACK);
992 // front-end wrapper for putting text in graph
994 DrawEvalText (char *buf, int cbBuf, int y)
996 // the magic constants 8 and 5 should really be derived from the font size somehow
997 cairo_text_extents_t extents;
998 cairo_t *cr = cairo_create(DRAWABLE(disp));
1000 /* GTK-TODO this has to go into the font-selection */
1001 cairo_select_font_face (cr, "Sans",
1002 CAIRO_FONT_SLANT_NORMAL,
1003 CAIRO_FONT_WEIGHT_NORMAL);
1004 cairo_set_font_size (cr, 12.0);
1007 cairo_text_extents (cr, buf, &extents);
1009 cairo_move_to (cr, MarginX - 2 - 8*cbBuf, y+5);
1010 cairo_text_path (cr, buf);
1011 cairo_set_source_rgb (cr, 0.0, 0.0, 0);
1012 cairo_fill_preserve (cr);
1013 cairo_set_source_rgb (cr, 0, 1.0, 0);
1014 cairo_set_line_width (cr, 0.1);