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", "Crown", "HCrown", "Knight", "Elephant", "PromoBishop", "King",
288 "Claw", "GoldKnight", "GoldLance", "GoldSilver", NULL
291 char *backupPiece[] = { "Princess", NULL, NULL, NULL, NULL, NULL, NULL,
292 NULL, NULL, NULL, NULL, NULL, NULL, "King", "Queen", "Lion" }; // pieces that map on other when not kanji
295 LoadSVG (char *dir, int color, int piece, int retry)
298 RsvgHandle *svg=svgPieces[color][piece];
299 RsvgDimensionData svg_dimensions;
300 GError *svgerror=NULL;
301 cairo_surface_t *img;
303 char *name = (retry ? backupPiece[piece - WhiteGrasshopper] : pngPieceNames[piece]);
305 if(!name) return NULL;
307 snprintf(buf, MSG_SIZ, "%s/%s%s.svg", dir, color ? "Black" : "White", name);
309 if(svg || *dir && (svg = rsvg_handle_new_from_file(buf, &svgerror))) {
311 rsvg_handle_get_dimensions(svg, &svg_dimensions);
312 img = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, squareSize, squareSize);
314 cr = cairo_create(img);
315 cairo_scale(cr, squareSize/(double) svg_dimensions.width, squareSize/(double) svg_dimensions.height);
316 rsvg_handle_render_cairo(svg, cr);
317 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
318 if(pngPieceImages[color][piece]) cairo_surface_destroy(pngPieceImages[color][piece]);
319 pngPieceImages[color][piece] = img;
325 if(!retry && piece >= WhiteGrasshopper && piece <= WhiteNothing) // pieces that are only different in kanji sets
326 return LoadSVG(dir, color, piece, 1);
328 g_error_free(svgerror);
333 ScaleOnePiece (int color, int piece)
337 cairo_surface_t *img, *cs;
342 svgPieces[color][piece] = LoadSVG("", color, piece, 0); // this fills pngPieceImages if we had cached svg with bitmap of wanted size
344 if(!pngPieceImages[color][piece]) { // we don't have cached bitmap (implying we did not have cached svg)
345 if(*appData.pieceDirectory) { // user specified piece directory
346 snprintf(buf, MSG_SIZ, "%s/%s%s.png", appData.pieceDirectory, color ? "Black" : "White", pngPieceNames[piece]);
347 img = cairo_image_surface_create_from_png (buf); // try if there are png pieces there
348 if(cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) { // there were not
349 svgPieces[color][piece] = LoadSVG(appData.pieceDirectory, color, piece, 0); // so try if he has svg there
350 } else pngPieceImages[color][piece] = img;
354 if(!pngPieceImages[color][piece]) { // we still did not manage to acquire a piece bitmap
355 static int warned = 0;
356 if(!(svgPieces[color][piece] = LoadSVG(svgDir, color, piece, 0)) && !warned) { // try to fall back on installed svg
357 char *msg = _("No default pieces installed!\nSelect your own using '-pieceImageDirectory'.");
358 printf("%s\n", msg); // give up
359 DisplayError(msg, 0);
360 warned = 1; // prevent error message being repeated for each piece type
364 img = pngPieceImages[color][piece];
366 // create new bitmap to hold scaled piece image (and remove any old)
367 if(pngPieceBitmaps2[color][piece]) cairo_surface_destroy (pngPieceBitmaps2[color][piece]);
368 pngPieceBitmaps2[color][piece] = cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
372 // scaled copying of the raw png image
373 cr = cairo_create(cs);
374 w = cairo_image_surface_get_width (img);
375 h = cairo_image_surface_get_height (img);
376 cairo_scale(cr, squareSize/w, squareSize/h);
377 cairo_set_source_surface (cr, img, 0, 0);
381 if(!appData.trueColors || !*appData.pieceDirectory) { // operate on bitmap to color it (king-size hack...)
382 int stride = cairo_image_surface_get_stride(cs)/4;
383 int *buf = (int *) cairo_image_surface_get_data(cs);
385 sscanf(color ? appData.blackPieceColor+1 : appData.whitePieceColor+1, "%x", &p); // replacement color
386 cairo_surface_flush(cs);
387 for(i=0; i<squareSize; i++) for(j=0; j<squareSize; j++) {
390 unsigned int c = buf[i*stride + j];
391 a = c >> 24; r = c >> 16 & 255; // alpha and red, where red is the 'white' weight, since white is #FFFFCC in the source images
392 f = (color ? a - r : r)/255.; // fraction of black or white in the mix that has to be replaced
393 buf[i*stride + j] = c & 0xFF000000; // alpha channel is kept at same opacity
394 buf[i*stride + j] += ((int)(f*(p&0xFF0000)) & 0xFF0000) + ((int)(f*(p&0xFF00)) & 0xFF00) + (int)(f*(p&0xFF)); // add desired fraction of new color
395 if(color) buf[i*stride + j] += r | r << 8 | r << 16; // details on black pieces get their weight added in pure white
396 if(appData.monoMode) {
397 if(a < 64) buf[i*stride + j] = 0; // if not opaque enough, totally transparent
398 else if(2*r < a) buf[i*stride + j] = 0xFF000000; // if not light enough, totally black
399 else buf[i*stride + j] = 0xFFFFFFFF; // otherwise white
402 cairo_surface_mark_dirty(cs);
411 for(p=0; pngPieceNames[p]; p++) {
415 SelectPieces(gameInfo.variant);
419 CreateAnyPieces (int p)
420 { // [HGM] taken out of main
421 if(p) CreatePNGPieces();
422 CreatePNGBoard(appData.liteBackTextureFile, 1);
423 CreatePNGBoard(appData.darkBackTextureFile, 0);
427 InitDrawingParams (int reloadPieces)
431 for(i=0; i<2; i++) for(p=0; p<BlackPawn+4; p++) {
432 if(pngPieceImages[i][p]) cairo_surface_destroy(pngPieceImages[i][p]);
433 pngPieceImages[i][p] = NULL;
434 if(svgPieces[i][p]) rsvg_handle_close(svgPieces[i][p], NULL);
435 svgPieces[i][p] = NULL;
440 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
443 Color (char *col, int n)
446 sscanf(col, "#%x", &c);
452 SetPen (cairo_t *cr, float w, char *col, int dash)
454 static const double dotted[] = {4.0, 4.0};
455 static int len = sizeof(dotted) / sizeof(dotted[0]);
456 cairo_set_line_width (cr, w);
457 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
458 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
461 void DrawSeekAxis( int x, int y, int xTo, int yTo )
466 cr = cairo_create (csBoardWindow);
468 cairo_move_to (cr, x, y);
469 cairo_line_to(cr, xTo, yTo );
471 SetPen(cr, 2, "#000000", 0);
476 GraphExpose(currBoard, x-1, yTo-1, xTo-x+2, y-yTo+2);
479 void DrawSeekBackground( int left, int top, int right, int bottom )
481 cairo_t *cr = cairo_create (csBoardWindow);
483 cairo_rectangle (cr, left, top, right-left, bottom-top);
485 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
490 GraphExpose(currBoard, left, top, right-left, bottom-top);
493 void DrawSeekText(char *buf, int x, int y)
495 cairo_t *cr = cairo_create (csBoardWindow);
497 cairo_select_font_face (cr, "Sans",
498 CAIRO_FONT_SLANT_NORMAL,
499 CAIRO_FONT_WEIGHT_NORMAL);
501 cairo_set_font_size (cr, 12.0);
503 cairo_move_to (cr, x, y+4);
504 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
505 cairo_show_text( cr, buf);
509 GraphExpose(currBoard, x-5, y-10, 60, 15);
512 void DrawSeekDot(int x, int y, int colorNr)
514 cairo_t *cr = cairo_create (csBoardWindow);
515 int square = colorNr & 0x80;
519 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
521 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
523 SetPen(cr, 2, "#000000", 0);
524 cairo_stroke_preserve(cr);
526 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
527 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
528 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
534 GraphExpose(currBoard, x-squareSize/8, y-squareSize/8, 2*(squareSize/8), 2*(squareSize/8));
538 InitDrawingHandle (Option *opt)
540 csBoardWindow = DRAWABLE(opt);
548 if (lineGap == 0) return;
550 /* [HR] Split this into 2 loops for non-square boards. */
552 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
553 gridSegments[i].x1 = 0;
555 lineGap + BOARD_WIDTH * (squareSize + lineGap);
556 gridSegments[i].y1 = gridSegments[i].y2
557 = lineGap / 2 + (i * (squareSize + lineGap));
560 for (j = 0; j < BOARD_WIDTH + 1; j++) {
561 gridSegments[j + i].y1 = 0;
562 gridSegments[j + i].y2 =
563 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
564 gridSegments[j + i].x1 = gridSegments[j + i].x2
565 = lineGap / 2 + (j * (squareSize + lineGap));
572 /* draws a grid starting around Nx, Ny squares starting at x,y */
574 float odd = (lineGap & 1)/2.;
578 cr = cairo_create (csBoardWindow);
580 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
581 SetPen(cr, lineGap, "#000000", 0);
584 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
586 int h = (gridSegments[i].y1 == gridSegments[i].y2); // horizontal
587 cairo_move_to (cr, gridSegments[i].x1 + !h*odd, gridSegments[i].y1 + h*odd);
588 cairo_line_to (cr, gridSegments[i].x2 + !h*odd, gridSegments[i].y2 + h*odd);
599 DrawBorder (int x, int y, int type, int odd)
605 case 0: col = "#000000"; break;
606 case 1: col = appData.highlightSquareColor; break;
607 case 2: col = appData.premoveHighlightColor; break;
608 default: col = "#808080"; break; // cannot happen
610 cr = cairo_create(csBoardWindow);
611 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
612 cairo_rectangle(cr, x+odd/2., y+odd/2., squareSize+lineGap, squareSize+lineGap);
613 SetPen(cr, lineGap, col, 0);
616 GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap+odd, squareSize+2*lineGap+odd);
620 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
622 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
623 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
625 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
626 if(textureW[kind] < W*squareSize)
627 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
629 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
630 if(textureH[kind] < H*squareSize)
631 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
633 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
638 DrawLogo (Option *opt, void *logo)
640 cairo_surface_t *img;
644 if(!logo || !opt) return;
645 img = cairo_image_surface_create_from_png (logo);
646 w = cairo_image_surface_get_width (img);
647 h = cairo_image_surface_get_height (img);
648 cr = cairo_create(DRAWABLE(opt));
649 // cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
650 cairo_scale(cr, (float)opt->max/w, (float)opt->value/h);
651 cairo_set_source_surface (cr, img, 0, 0);
654 cairo_surface_destroy (img);
655 GraphExpose(opt, 0, 0, appData.logoSize, appData.logoSize/2);
659 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
660 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
664 cr = cairo_create (dest);
666 if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) {
667 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
668 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
669 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
672 } else { // evenly colored squares
675 case 0: col = appData.darkSquareColor; break;
676 case 1: col = appData.lightSquareColor; break;
677 case 2: col = "#000000"; break;
678 default: col = "#808080"; break; // cannot happen
680 SetPen(cr, 2.0, col, 0);
681 cairo_rectangle (cr, fac*x, fac*y, squareSize, squareSize);
682 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
689 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
694 if ((int)piece < (int) BlackPawn) {
700 if(appData.upsideDown && flipView) kind = 1 - kind; // swap white and black pieces
701 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
702 cr = cairo_create (dest);
703 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
708 static char *markerColor[8] = { "#FFFF00", "#FF0000", "#00FF00", "#0000FF", "#00FFFF", "#FF00FF", "#FFFFFF", "#000000" };
711 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
715 cr = cairo_create(cs);
716 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
717 if(appData.monoMode) {
718 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
719 cairo_stroke_preserve(cr);
720 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
722 SetPen(cr, 2, markerColor[marker-1], 0);
730 DrawDot (int marker, int x, int y, int r)
731 { // used for atomic captures; no need to draw on backup
732 DoDrawDot(csBoardWindow, marker, x, y, r);
733 GraphExpose(currBoard, x-r, y-r, 2*r, 2*r);
737 DrawText (char *string, int x, int y, int align)
740 cairo_text_extents_t te;
743 cr = cairo_create (csBoardWindow);
744 cairo_select_font_face (cr, "Sans",
745 CAIRO_FONT_SLANT_NORMAL,
746 CAIRO_FONT_WEIGHT_BOLD);
748 cairo_set_font_size (cr, align < 0 ? 2*squareSize/3 : squareSize/4);
749 // calculate where it goes
750 cairo_text_extents (cr, string, &te);
753 xx += squareSize - te.width - te.x_bearing - 1;
754 yy += squareSize - te.height - te.y_bearing - 1;
755 } else if (align == 2) {
756 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
757 } else if (align == 3) {
758 xx += squareSize - te.width -te.x_bearing - 1;
759 yy += -te.y_bearing + 3;
760 } else if (align == 4) {
761 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
762 } else if (align < 0) {
763 xx += squareSize/2 - te.width/2, yy += 9*squareSize/16 - te.y_bearing/2;
766 cairo_move_to (cr, xx-1, yy);
767 if(align == -2) cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); else
768 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
769 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
770 cairo_show_text (cr, string);
775 InscribeKanji (ChessSquare piece, int x, int y)
777 char *p, *q, buf[10];
779 if(piece == EmptySquare) return;
780 if(piece >= BlackPawn) piece = BLACK_TO_WHITE piece;
781 p = appData.inscriptions;
783 while(piece > WhitePawn) {
784 if(*p++ == NULLCHAR) {
785 if(n != WhiteKing) return;
790 while((*p & 0xC0) == 0x80) p++; // skip UTF-8 continuation bytes
794 for(q=buf; (*++q & 0xC0) == 0x80;);
796 DrawText(buf, x, y, n > WhiteLion ? -2 : -1);
800 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *tString, char *bString, int align)
801 { // basic front-end board-draw function: takes care of everything that can be in square:
802 // piece, background, coordinate/count, marker dot
804 if (piece == EmptySquare) {
805 BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
807 pngDrawPiece(csBoardWindow, piece, square_color, x, y);
808 if(appData.inscriptions[0]) InscribeKanji(piece, x, y);
811 if(align) { // square carries inscription (coord or piece count)
812 if(align > 1) DrawText(tString, x, y, align); // top (rank or count)
813 if(bString && *bString) DrawText(bString, x, y, 1); // bottom (always lower right file ID)
816 if(marker) { // print fat marker dot, if requested
817 DoDrawDot(csBoardWindow, marker, x + squareSize/4, y+squareSize/4, squareSize/2);
821 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
823 /* Masks for XPM pieces. Black and white pieces can have
824 different shapes, but in the interest of retaining my
825 sanity pieces must have the same outline on both light
826 and dark squares, and all pieces must use the same
827 background square colors/images. */
829 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
832 InitAnimState (AnimNr anr)
834 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
835 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
836 c_animBufs[anr+4] = csBoardWindow;
837 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
838 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
845 InitAnimState(Player);
849 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
851 static cairo_t *pieceSource;
852 pieceSource = cairo_create (dest);
853 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
854 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
855 else cairo_paint(pieceSource);
856 cairo_destroy (pieceSource);
860 InsertPiece (AnimNr anr, ChessSquare piece)
862 CairoOverlayPiece(piece, c_animBufs[anr]);
866 DrawBlank (AnimNr anr, int x, int y, int startColor)
868 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
871 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
872 int srcX, int srcY, int width, int height, int destX, int destY)
875 c_animBufs[anr+4] = csBoardWindow;
876 cr = cairo_create (c_animBufs[anr+destBuf]);
877 cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY);
878 cairo_rectangle (cr, destX, destY, width, height);
881 if(c_animBufs[anr+destBuf] == csBoardWindow) // suspect that GTK needs this!
882 GraphExpose(currBoard, destX, destY, width, height);
886 SetDragPiece (AnimNr anr, ChessSquare piece)
890 /* [AS] Arrow highlighting support */
893 DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr)
897 cr = cairo_create (cs);
898 cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y);
900 cairo_line_to(cr, arrow[i].x, arrow[i].y);
902 if(appData.monoMode) { // should we always outline arrow?
903 cairo_line_to(cr, arrow[0].x, arrow[0].y);
904 SetPen(cr, 2, "#000000", 0);
905 cairo_stroke_preserve(cr);
907 SetPen(cr, 2, appData.highlightSquareColor, 0);
915 DrawPolygon (Pnt arrow[], int nr)
917 DoDrawPolygon(csBoardWindow, arrow, nr);
918 // if(!dual) DoDrawPolygon(csBoardBackup, arrow, nr);
921 //-------------------- Eval Graph drawing routines (formerly in xevalgraph.h) --------------------
924 ChoosePen(cairo_t *cr, int i)
928 SetPen(cr, 1.0, "#000000", 0);
931 SetPen(cr, 1.0, "#A0A0A0", 1);
934 SetPen(cr, 1.0, "#0000FF", 1);
937 SetPen(cr, 3.0, crWhite, 0);
940 SetPen(cr, 3.0, crBlack, 0);
943 SetPen(cr, 3.0, "#E0E0F0", 0);
948 // [HGM] front-end, added as wrapper to avoid use of LineTo and MoveToEx in other routines (so they can be back-end)
950 DrawSegment (int x, int y, int *lastX, int *lastY, int penType)
952 static int curX, curY;
954 if(penType != PEN_NONE) {
955 cairo_t *cr = cairo_create(DRAWABLE(disp));
956 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
957 cairo_move_to (cr, curX, curY);
958 cairo_line_to (cr, x,y);
959 ChoosePen(cr, penType);
964 if(lastX != NULL) { *lastX = curX; *lastY = curY; }
968 // front-end wrapper for drawing functions to do rectangles
970 DrawRectangle (int left, int top, int right, int bottom, int side, int style)
974 cr = cairo_create (DRAWABLE(disp));
975 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
976 cairo_rectangle (cr, left, top, right-left, bottom-top);
979 case 0: ChoosePen(cr, PEN_BOLDWHITE); break;
980 case 1: ChoosePen(cr, PEN_BOLDBLACK); break;
981 case 2: ChoosePen(cr, PEN_BACKGD); break;
987 cairo_rectangle (cr, left, top, right-left-1, bottom-top-1);
988 ChoosePen(cr, PEN_BLACK);
995 // front-end wrapper for putting text in graph
997 DrawEvalText (char *buf, int cbBuf, int y)
999 // the magic constants 8 and 5 should really be derived from the font size somehow
1000 cairo_text_extents_t extents;
1001 cairo_t *cr = cairo_create(DRAWABLE(disp));
1003 /* GTK-TODO this has to go into the font-selection */
1004 cairo_select_font_face (cr, "Sans",
1005 CAIRO_FONT_SLANT_NORMAL,
1006 CAIRO_FONT_WEIGHT_NORMAL);
1007 cairo_set_font_size (cr, 12.0);
1010 cairo_text_extents (cr, buf, &extents);
1012 cairo_move_to (cr, MarginX - 2 - 8*cbBuf, y+5);
1013 cairo_text_path (cr, buf);
1014 cairo_set_source_rgb (cr, 0.0, 0.0, 0);
1015 cairo_fill_preserve (cr);
1016 cairo_set_source_rgb (cr, 0, 1.0, 0);
1017 cairo_set_line_width (cr, 0.1);