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, 2016 Free
9 * Software Foundation, Inc.
11 * The following terms apply to Digital Equipment Corporation's copyright
13 * ------------------------------------------------------------------------
16 * Permission to use, copy, modify, and distribute this software and its
17 * documentation for any purpose and without fee is hereby granted,
18 * provided that the above copyright notice appear in all copies and that
19 * both that copyright notice and this permission notice appear in
20 * supporting documentation, and that the name of Digital not be
21 * used in advertising or publicity pertaining to distribution of the
22 * software without specific, written prior permission.
24 * DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
25 * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
26 * DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
27 * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
28 * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
29 * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
31 * ------------------------------------------------------------------------
33 * The following terms apply to the enhanced version of XBoard
34 * distributed by the Free Software Foundation:
35 * ------------------------------------------------------------------------
37 * GNU XBoard is free software: you can redistribute it and/or modify
38 * it under the terms of the GNU General Public License as published by
39 * the Free Software Foundation, either version 3 of the License, or (at
40 * your option) any later version.
42 * GNU XBoard is distributed in the hope that it will be useful, but
43 * WITHOUT ANY WARRANTY; without even the implied warranty of
44 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
45 * General Public License for more details.
47 * You should have received a copy of the GNU General Public License
48 * along with this program. If not, see http://www.gnu.org/licenses/. *
50 *------------------------------------------------------------------------
51 ** See the file ChangeLog for a revision history. */
57 #include <cairo/cairo.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]; // 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]; // scaled pieces in store
112 static RsvgHandle *svgPieces[2][(int)BlackPawn]; // 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);
139 NewCanvas (Option *graph)
142 int w = graph->max, h = graph->value;
143 if(graph->choice) cairo_surface_destroy((cairo_surface_t *) graph->choice);
144 graph->choice = (char**) cairo_image_surface_create (CAIRO_FORMAT_ARGB32, w, h);
145 // paint white, to prevent weirdness when people maximize window and drag pieces over space next to board
146 cr = cairo_create ((cairo_surface_t *) graph->choice);
147 cairo_rectangle (cr, 0, 0, w, h);
148 cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);
151 graph->min &= ~REPLACE;
154 static cairo_surface_t *
155 CsBoardWindow (Option *opt)
156 { // test before every draw event if we need to resize the canvas
157 if(opt->min & REPLACE) NewCanvas(opt);
158 return DRAWABLE(opt);
163 SelectPieces(VariantClass v)
168 for(p=0; p<=(int)WhiteKing; p++)
169 pngPieceBitmaps[i][p] = pngPieceBitmaps2[i][p]; // defaults
170 if(v == VariantShogi && BOARD_HEIGHT != 7) { // no exceptions in Tori Shogi
171 pngPieceBitmaps[i][(int)WhiteCannon] = pngPieceBitmaps2[i][(int)WhiteTokin];
172 pngPieceBitmaps[i][(int)WhiteNightrider] = pngPieceBitmaps2[i][(int)WhitePKnight];
173 pngPieceBitmaps[i][(int)WhiteGrasshopper] = pngPieceBitmaps2[i][(int)WhitePLance];
174 pngPieceBitmaps[i][(int)WhiteSilver] = pngPieceBitmaps2[i][(int)WhitePSilver];
175 pngPieceBitmaps[i][(int)WhiteQueen] = pngPieceBitmaps2[i][(int)WhiteLance];
176 pngPieceBitmaps[i][(int)WhiteFalcon] = pngPieceBitmaps2[i][(int)WhiteMonarch]; // for Sho Shogi
179 if(v == VariantGothic) {
180 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteSilver];
183 if(v == VariantSChess) {
184 pngPieceBitmaps[i][(int)WhiteAngel] = pngPieceBitmaps2[i][(int)WhiteFalcon];
185 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteAlfil];
187 if(v == VariantChuChess) {
188 pngPieceBitmaps[i][(int)WhiteNightrider] = pngPieceBitmaps2[i][(int)WhiteLion];
193 #define BoardSize int
195 InitDrawingSizes (BoardSize boardSize, int flags)
196 { // [HGM] resize is functional now, but for board format changes only (nr of ranks, files)
197 int boardWidth, boardHeight;
198 static int oldWidth, oldHeight;
199 static VariantClass oldVariant;
200 static int oldTwoBoards = 0, oldNrOfFiles = 0;
202 if(!mainOptions[W_BOARD].handle) return;
204 if(boardSize == -2 && gameInfo.variant != oldVariant
205 && oldNrOfFiles && oldNrOfFiles != BOARD_WIDTH) { // called because variant switch changed board format
206 squareSize = ((squareSize + lineGap) * oldNrOfFiles + 0.5*BOARD_WIDTH) / BOARD_WIDTH; // keep total width fixed
207 if(appData.overrideLineGap < 0) lineGap = squareSize < 37 ? 1 : squareSize < 59 ? 2 : squareSize < 116 ? 3 : 4;
208 squareSize -= lineGap;
209 CreatePNGPieces(appData.pieceDirectory);
212 oldNrOfFiles = BOARD_WIDTH;
214 if(oldTwoBoards && !twoBoards) PopDown(DummyDlg);
215 oldTwoBoards = twoBoards;
217 if(appData.overrideLineGap >= 0) lineGap = appData.overrideLineGap;
218 boardWidth = lineGap + BOARD_WIDTH * (squareSize + lineGap);
219 boardHeight = lineGap + BOARD_HEIGHT * (squareSize + lineGap);
221 if(boardWidth != oldWidth || boardHeight != oldHeight) { // do resizing stuff only if size actually changed
223 oldWidth = boardWidth; oldHeight = boardHeight;
225 CreateAnyPieces(0); // redo texture scaling
228 * Inhibit shell resizing.
230 ResizeBoardWindow(boardWidth, boardHeight, 0);
235 // [HGM] pieces: tailor piece bitmaps to needs of specific variant
238 if(gameInfo.variant != oldVariant) { // and only if variant changed
240 SelectPieces(gameInfo.variant);
242 oldVariant = gameInfo.variant;
248 ExposeRedraw (Option *graph, int x, int y, int w, int h)
249 { // copy a selected part of the buffer bitmap to the display
250 cairo_t *cr = cairo_create((cairo_surface_t *) graph->textValue);
251 cairo_set_source_surface(cr, (cairo_surface_t *) graph->choice, 0, 0);
252 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
253 cairo_rectangle(cr, x, y, w, h);
258 static int modV[2], modH[2], transparency[2];
261 CreatePNGBoard (char *s, int kind)
264 static float n[2] = { 1., 1. };
265 if(!appData.useBitmaps || s == NULL || *s == 0 || *s == '*') { useTexture &= ~(kind+1); return; }
266 textureW[kind] = 0; // prevents bitmap from being used if not succesfully loaded
267 if(strstr(s, ".png")) {
268 cairo_surface_t *img = cairo_image_surface_create_from_png (s);
269 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
272 if(pngOriginalBoardBitmap[kind]) cairo_surface_destroy(pngOriginalBoardBitmap[kind]);
273 if(n[kind] != 1.) cairo_surface_destroy(pngBoardBitmap[kind]);
274 useTexture |= kind + 1; pngOriginalBoardBitmap[kind] = img;
275 w = textureW[kind] = cairo_image_surface_get_width (img);
276 h = textureH[kind] = cairo_image_surface_get_height (img);
277 transparency[kind] = cairo_image_surface_get_format (img) == CAIRO_FORMAT_ARGB32;
278 n[kind] = 1.; modV[kind] = modH[kind] = -1;
279 while((q = strchr(p+1, '-'))) p = q; // find last '-'
280 if(strlen(p) < 11 && sscanf(p, "-%dx%d.pn%c", &f, &r, &c) == 3 && c == 'g') {
281 if(f == 0 || r == 0) f = BOARD_WIDTH, r = BOARD_HEIGHT; // 0x0 means 'fits any', so make it fit
282 textureW[kind] = (w*BOARD_WIDTH)/f; // sync cutting locations with square pattern
283 textureH[kind] = (h*BOARD_HEIGHT)/r;
284 n[kind] = (r*squareSize + 0.99)/h; // scale to make it fit exactly vertically
285 modV[kind] = r; modH[kind] = f;
287 if((p = strstr(s, "xq")) && (p == s || p[-1] == '/')) { // assume full-board image for Xiangqi
288 while(0.8*squareSize*BOARD_WIDTH > n[kind]*w || 0.8*squareSize*BOARD_HEIGHT > n[kind]*h) n[kind]++;
290 while(squareSize > n[kind]*w || squareSize > n[kind]*h) n[kind]++;
292 if(n[kind] == 1.) pngBoardBitmap[kind] = img; else {
293 // create scaled-up copy of the raw png image when it was too small
294 cairo_surface_t *cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, n[kind]*w, n[kind]*h);
295 cairo_t *cr = cairo_create(cs);
296 pngBoardBitmap[kind] = cs; textureW[kind] *= n[kind]; textureH[kind] *= n[kind];
297 // cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
298 cairo_scale(cr, n[kind], n[kind]);
299 cairo_set_source_surface (cr, img, 0, 0);
307 char *pngPieceNames[] = // must be in same order as internal piece encoding
308 { "Pawn", "Knight", "Bishop", "Rook", "Queen", "Advisor", "Elephant", "Archbishop", "Marshall", "Gold", "Commoner",
309 "Canon", "Nightrider", "CrownedBishop", "CrownedRook", "Crown", "Chancellor", "Hawk", "Lance", "Cobra", "Unicorn", "Lion",
310 "Sword", "Zebra", "Camel", "Tower", "Wolf", "Hat", "Duck", "Lance", "Dragon", "Gnu", "Cub",
311 "LShield", "Pegasus", "Wizard", "Copper", "Iron", "Viking", "Flag", "Axe", "Dolphin", "Leopard", "Claw",
312 "Left", "Butterfly", "PromoBishop", "PromoRook", "HCrown", "RShield", "Prince", "Phoenix", "Kylin", "Drunk", "Right",
313 "GoldPawn", "GoldKnight", "PromoHorse", "PromoDragon", "GoldLance", "GoldSilver", "HSword", "PromoSword", "PromoHSword", "Princess", "King",
317 char *backupPiece[] = { // pieces that map on other in default theme ("Crown" - "Drunk")
318 "Princess", NULL, NULL, NULL, NULL, NULL, NULL,
319 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, "Chancellor", NULL,
320 NULL, "Knight", NULL, "Commoner", NULL, NULL, NULL, "Canon", NULL, NULL, NULL,
321 NULL, NULL, NULL, NULL, NULL, NULL, "King", "Queen", "Lion", "Elephant"
325 LoadSVG (char *dir, int color, int piece, int retry)
328 RsvgHandle *svg=svgPieces[color][piece];
329 RsvgDimensionData svg_dimensions;
330 GError *svgerror=NULL;
331 cairo_surface_t *img;
333 char *name = (retry ? backupPiece[piece - WhiteGrasshopper] : pngPieceNames[piece]);
335 if(!name) return NULL;
337 snprintf(buf, MSG_SIZ, "%s/%s%s.svg", dir, color ? "Black" : "White", name);
340 svg = rsvg_handle_new_from_file(buf, &svgerror);
341 if(!svg) { // failed! If -pid name starts with "sub_" we try to load the piece from the parent directory
343 safeStrCpy(buf, dir, MSG_SIZ);
344 while((q = strchr(p, '/'))) p = q + 1;
345 if(!strncmp(p, "sub_", 4)) {
346 if(p == buf) safeStrCpy(buf, ".", MSG_SIZ); else p[-1] = NULLCHAR; // strip last directory off path
347 return LoadSVG(buf, color, piece, retry);
350 if(!svg && *appData.inscriptions) { // if there is no piece-specific SVG, but we make inscriptions, try general background
351 snprintf(buf, MSG_SIZ, "%s/%sTile.svg", dir, color ? "Black" : "White");
352 svg = rsvg_handle_new_from_file(buf, &svgerror);
357 rsvg_handle_get_dimensions(svg, &svg_dimensions);
358 img = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, squareSize, squareSize);
360 cr = cairo_create(img);
361 cairo_scale(cr, squareSize/(double) svg_dimensions.width, squareSize/(double) svg_dimensions.height);
362 rsvg_handle_render_cairo(svg, cr);
363 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
364 if(pngPieceImages[color][piece]) cairo_surface_destroy(pngPieceImages[color][piece]);
365 pngPieceImages[color][piece] = img;
371 if(!retry && piece >= WhiteGrasshopper && piece <= WhiteDrunk) // pieces that are only different in kanji sets
372 return LoadSVG(dir, color, piece, 1);
374 g_error_free(svgerror);
379 ScaleOnePiece (int color, int piece, char *pieceDir)
383 cairo_surface_t *img, *cs;
388 svgPieces[color][piece] = LoadSVG("", color, piece, 0); // this fills pngPieceImages if we had cached svg with bitmap of wanted size
390 if(!pngPieceImages[color][piece]) { // we don't have cached bitmap (implying we did not have cached svg)
391 if(*pieceDir) { // user specified piece directory
392 snprintf(buf, MSG_SIZ, "%s/%s%s.png", pieceDir, color ? "Black" : "White", pngPieceNames[piece]);
393 img = cairo_image_surface_create_from_png (buf); // try if there are png pieces there
394 if(cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) { // there were not
395 svgPieces[color][piece] = LoadSVG(pieceDir, color, piece, 0); // so try if he has svg there
396 } else pngPieceImages[color][piece] = img;
400 if(!pngPieceImages[color][piece]) { // we still did not manage to acquire a piece bitmap
401 static int warned = 0;
402 if(!(svgPieces[color][piece] = LoadSVG(svgDir, color, piece, 0)) // try to fall back on installed svg
403 && !warned && strcmp(pngPieceNames[piece], "Tile")) { // but do not complain about missing 'Tile'
404 char *msg = _("No default pieces installed!\nSelect your own using '-pieceImageDirectory'.");
405 printf("%s (%s)\n", msg, pngPieceNames[piece]); // give up
406 DisplayError(msg, 0);
407 warned = 1; // prevent error message being repeated for each piece type
411 img = pngPieceImages[color][piece];
413 // create new bitmap to hold scaled piece image (and remove any old)
414 if(pngPieceBitmaps2[color][piece]) cairo_surface_destroy (pngPieceBitmaps2[color][piece]);
415 pngPieceBitmaps2[color][piece] = cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
419 // scaled copying of the raw png image
420 cr = cairo_create(cs);
421 w = cairo_image_surface_get_width (img);
422 h = cairo_image_surface_get_height (img);
423 cairo_scale(cr, squareSize/w, squareSize/h);
424 cairo_set_source_surface (cr, img, 0, 0);
428 if(!appData.trueColors || !*pieceDir) { // operate on bitmap to color it (king-size hack...)
429 int stride = cairo_image_surface_get_stride(cs)/4;
430 int *buf = (int *) cairo_image_surface_get_data(cs);
432 sscanf(color ? appData.blackPieceColor+1 : appData.whitePieceColor+1, "%x", &p); // replacement color
433 cairo_surface_flush(cs);
434 for(i=0; i<squareSize; i++) for(j=0; j<squareSize; j++) {
437 unsigned int c = buf[i*stride + j];
438 a = c >> 24; r = c >> 16 & 255; // alpha and red, where red is the 'white' weight, since white is #FFFFCC in the source images
439 f = (color ? a - r : r)/255.; // fraction of black or white in the mix that has to be replaced
440 buf[i*stride + j] = c & 0xFF000000; // alpha channel is kept at same opacity
441 buf[i*stride + j] += ((int)(f*(p&0xFF0000)) & 0xFF0000) + ((int)(f*(p&0xFF00)) & 0xFF00) + (int)(f*(p&0xFF)); // add desired fraction of new color
442 if(color) buf[i*stride + j] += r | r << 8 | r << 16; // details on black pieces get their weight added in pure white
443 if(appData.monoMode) {
444 if(a < 64) buf[i*stride + j] = 0; // if not opaque enough, totally transparent
445 else if(2*r < a) buf[i*stride + j] = 0xFF000000; // if not light enough, totally black
446 else buf[i*stride + j] = 0xFFFFFFFF; // otherwise white
449 cairo_surface_mark_dirty(cs);
454 CreatePNGPieces (char *pieceDir)
457 for(p=0; pngPieceNames[p]; p++) {
458 ScaleOnePiece(0, p, pieceDir);
459 ScaleOnePiece(1, p, pieceDir);
461 SelectPieces(gameInfo.variant);
465 CreateAnyPieces (int p)
466 { // [HGM] taken out of main
467 if(p) CreatePNGPieces(appData.pieceDirectory);
468 CreatePNGBoard(appData.liteBackTextureFile, 1);
469 CreatePNGBoard(appData.darkBackTextureFile, 0);
476 for(i=0; i<2; i++) for(p=0; p<BlackPawn; p++) {
477 if(pngPieceImages[i][p]) cairo_surface_destroy(pngPieceImages[i][p]);
478 pngPieceImages[i][p] = NULL;
479 if(svgPieces[i][p]) rsvg_handle_close(svgPieces[i][p], NULL);
480 svgPieces[i][p] = NULL;
485 InitDrawingParams (int reloadPieces)
487 if(reloadPieces) ClearPieces();
492 Preview (int n, char *s)
494 static Boolean changed[4];
497 case 0: // restore true setting
498 if(changed[3]) ClearPieces();
499 CreateAnyPieces(changed[3]); // recomputes textures and (optionally) pieces
500 for(n=0; n<4; n++) changed[n] = FALSE;
504 CreatePNGBoard(s, n-1);
511 DrawPosition(TRUE, NULL);
514 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
517 Color (char *col, int n)
520 sscanf(col, "#%x", &c);
526 SetPen (cairo_t *cr, float w, char *col, int dash)
528 static const double dotted[] = {4.0, 4.0};
529 static int len = sizeof(dotted) / sizeof(dotted[0]);
530 cairo_set_line_width (cr, w);
531 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
532 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
535 void DrawSeekAxis( int x, int y, int xTo, int yTo )
540 cr = cairo_create (CsBoardWindow(currBoard));
542 cairo_move_to (cr, x, y);
543 cairo_line_to(cr, xTo, yTo );
545 SetPen(cr, 2, "#000000", 0);
550 GraphExpose(currBoard, x-1, yTo-1, xTo-x+2, y-yTo+2);
553 void DrawSeekBackground( int left, int top, int right, int bottom )
555 cairo_t *cr = cairo_create (CsBoardWindow(currBoard));
557 cairo_rectangle (cr, left, top, right-left, bottom-top);
559 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
564 GraphExpose(currBoard, left, top, right-left, bottom-top);
567 void DrawSeekText(char *buf, int x, int y)
569 cairo_t *cr = cairo_create (CsBoardWindow(currBoard));
571 cairo_select_font_face (cr, "Sans",
572 CAIRO_FONT_SLANT_NORMAL,
573 CAIRO_FONT_WEIGHT_NORMAL);
575 cairo_set_font_size (cr, 12.0);
577 cairo_move_to (cr, x, y+4);
578 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
579 cairo_show_text( cr, buf);
583 GraphExpose(currBoard, x-5, y-10, 60, 15);
586 void DrawSeekDot(int x, int y, int colorNr)
588 cairo_t *cr = cairo_create (CsBoardWindow(currBoard));
589 int square = colorNr & 0x80;
593 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
595 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
597 SetPen(cr, 2, "#000000", 0);
598 cairo_stroke_preserve(cr);
600 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
601 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
602 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
608 GraphExpose(currBoard, x-squareSize/8, y-squareSize/8, 2*(squareSize/8), 2*(squareSize/8));
612 InitDrawingHandle (Option *opt)
614 // CsBoardWindow = DRAWABLE(opt);
623 if (lineGap == 0) return;
625 /* [HR] Split this into 2 loops for non-square boards. */
627 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
628 gridSegments[i].x1 = 0;
630 lineGap + BOARD_WIDTH * (squareSize + lineGap);
631 gridSegments[i].y1 = gridSegments[i].y2
632 = lineGap / 2 + (i * (squareSize + lineGap));
635 for (j = 0; j < BOARD_WIDTH + 1; j++) {
636 gridSegments[j + i].y1 = 0;
637 gridSegments[j + i].y2 =
638 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
639 gridSegments[j + i].x1 = gridSegments[j + i].x2
640 = lineGap / 2 + (j * (squareSize + lineGap));
647 /* draws a grid starting around Nx, Ny squares starting at x,y */
649 float odd = (lineGap & 1)/2.;
653 cr = cairo_create (CsBoardWindow(currBoard));
655 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
656 SetPen(cr, lineGap, "#000000", 0);
659 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
661 int h = (gridSegments[i].y1 == gridSegments[i].y2); // horizontal
662 cairo_move_to (cr, gridSegments[i].x1 + !h*odd, gridSegments[i].y1 + h*odd);
663 cairo_line_to (cr, gridSegments[i].x2 + !h*odd, gridSegments[i].y2 + h*odd);
674 DrawBorder (int x, int y, int type, int odd)
680 case 0: col = "#000000"; break;
681 case 1: col = appData.highlightSquareColor; break;
682 case 2: col = appData.premoveHighlightColor; break;
683 default: col = "#808080"; break; // cannot happen
685 cr = cairo_create(CsBoardWindow(currBoard));
686 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
687 cairo_rectangle(cr, x+odd/2., y+odd/2., squareSize+lineGap, squareSize+lineGap);
688 SetPen(cr, lineGap, col, 0);
691 // GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap+odd, squareSize+2*lineGap+odd);
695 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
697 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
698 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
700 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
701 if(modV[kind] > 0) nx %= modH[kind], ny %= modV[kind]; // tile fixed-format board periodically to extend it
702 if(textureW[kind] < W*squareSize)
703 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
705 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
706 if(textureH[kind] < H*squareSize)
707 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
709 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
714 DrawLogo (Option *opt, void *logo)
716 cairo_surface_t *img;
721 cr = cairo_create(CsBoardWindow(opt));
722 cairo_rectangle (cr, 0, 0, opt->max, opt->value);
723 cairo_set_source_rgba(cr, 0.5, 0.5, 0.5, 1.0);
724 cairo_fill(cr); // paint background in case logo does not exist
726 img = cairo_image_surface_create_from_png (logo);
727 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
728 w = cairo_image_surface_get_width (img);
729 h = cairo_image_surface_get_height (img);
730 // cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
731 cairo_scale(cr, (float)opt->max/w, (float)opt->value/h);
732 cairo_set_source_surface (cr, img, 0, 0);
735 cairo_surface_destroy (img);
738 GraphExpose(opt, 0, 0, opt->max, opt->value);
742 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
743 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
744 int x0, y0, texture = (useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color);
747 cr = cairo_create (dest);
749 if(!texture || transparency[color]) // draw color also (as background) when texture could be transparent
750 { // evenly colored squares
753 case 0: col = appData.darkSquareColor; break;
754 case 1: col = appData.lightSquareColor; break;
755 case 2: col = "#000000"; break;
756 default: col = "#808080"; break; // cannot happen
758 SetPen(cr, 2.0, col, 0);
759 cairo_rectangle (cr, fac*x, fac*y, squareSize, squareSize);
760 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
764 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
765 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
766 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
773 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
778 if ((int)piece < (int) BlackPawn) {
784 if(piece == WhiteKing && kind == appData.jewelled) piece = WhiteZebra;
785 if(appData.upsideDown && flipView) kind = 1 - kind; // swap white and black pieces
786 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
787 cr = cairo_create (dest);
788 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
793 static char *markerColor[8] = { "#FFFF00", "#FF0000", "#00FF00", "#0000FF", "#00FFFF", "#FF00FF", "#FFFFFF", "#000000" };
796 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
800 cr = cairo_create(cs);
801 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
802 if(appData.monoMode) {
803 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
804 cairo_stroke_preserve(cr);
805 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
807 SetPen(cr, 2, markerColor[marker-1], 0);
815 DrawDot (int marker, int x, int y, int r)
816 { // used for atomic captures; no need to draw on backup
817 DoDrawDot(CsBoardWindow(currBoard), marker, x, y, r);
818 GraphExpose(currBoard, x-r, y-r, 2*r, 2*r);
822 DrawUnicode (cairo_surface_t *canvas, char *string, int x, int y, char id, int flip, int size, int vpos)
824 // cairo_text_extents_t te;
828 PangoFontDescription *desc;
830 char fontName[MSG_SIZ];
832 cr = cairo_create (canvas);
833 layout = pango_cairo_create_layout(cr);
834 pango_layout_set_text(layout, string, -1);
835 snprintf(fontName, MSG_SIZ, "Sans Normal %dpx", size*squareSize/64);
836 desc = pango_font_description_from_string(fontName);
837 pango_layout_set_font_description(layout, desc);
838 pango_font_description_free(desc);
839 pango_layout_get_pixel_extents(layout, NULL, &r);
840 cairo_translate(cr, x + squareSize/2 - s*r.width/2, y + (32+vpos*s)*squareSize/64 - s*r.height/2);
841 if(s < 0) cairo_rotate(cr, G_PI);
842 cairo_set_source_rgb(cr, (id == '+' ? 1.0 : 0.0), 0.0, 0.0);
843 pango_cairo_update_layout(cr, layout);
844 pango_cairo_show_layout(cr, layout);
845 g_object_unref(layout);
850 DrawText (char *string, int x, int y, int align)
853 cairo_text_extents_t te;
856 cr = cairo_create (CsBoardWindow(currBoard));
857 cairo_select_font_face (cr, "Sans",
858 CAIRO_FONT_SLANT_NORMAL,
859 CAIRO_FONT_WEIGHT_BOLD);
861 cairo_set_font_size (cr, align < 0 ? 2*squareSize/3 : squareSize/4);
862 // calculate where it goes
863 cairo_text_extents (cr, string, &te);
866 xx += squareSize - te.width - te.x_bearing - 1;
867 yy += squareSize - te.height - te.y_bearing - 1;
868 } else if (align == 2) {
869 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
870 } else if (align == 3) {
871 xx += squareSize - te.width -te.x_bearing - 1;
872 yy += -te.y_bearing + 3;
873 } else if (align == 4) {
874 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
877 cairo_move_to (cr, xx-1, yy);
878 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
879 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
880 cairo_show_text (cr, string);
885 InscribeKanji (cairo_surface_t *canvas, ChessSquare piece, int x, int y)
887 char *p, *q, buf[20], nr = 1;
888 int i, n, size = 40, flip = appData.upsideDown && flipView == (piece < BlackPawn);
889 if(piece == EmptySquare) return;
890 if(piece >= BlackPawn) piece = BLACK_TO_WHITE piece;
891 p = appData.inscriptions;
892 if(*p > '0' && *p < '3') nr = *p++ - '0'; // nr of kanji per piece
894 while(piece > WhitePawn) {
895 if(*p == '/') p++, piece = n - WhitePBishop; // secondary series
896 if(*p++ == NULLCHAR) {
897 if(n != WhiteKing) return;
902 while((*p & 0xC0) == 0x80) p++; // skip UTF-8 continuation bytes
903 if(*q != '.' && ++i < nr) continue; // yet more kanji for the current piece
907 for(q=buf; (*++q & 0xC0) == 0x80;); // skip first unicode
910 while((*++p & 0xC0) == 0x80) {} // skip second unicode
911 *p = NULLCHAR; size = 30; i = 16;
912 DrawUnicode(canvas, q, x, y, PieceToChar(n), flip, size, -10);
915 DrawUnicode(canvas, buf, x, y, PieceToChar(n), flip, size, i);
919 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *tString, char *bString, int align)
920 { // basic front-end board-draw function: takes care of everything that can be in square:
921 // piece, background, coordinate/count, marker dot
923 if (piece == EmptySquare) {
924 BlankSquare(CsBoardWindow(currBoard), x, y, square_color, piece, 1);
926 pngDrawPiece(CsBoardWindow(currBoard), piece, square_color, x, y);
927 if(appData.inscriptions[0]) InscribeKanji(CsBoardWindow(currBoard), piece, x, y);
930 if(align) { // square carries inscription (coord or piece count)
931 if(align > 1) DrawText(tString, x, y, align); // top (rank or count)
932 if(bString && *bString) DrawText(bString, x, y, 1); // bottom (always lower right file ID)
935 if(marker) { // print fat marker dot, if requested
936 DoDrawDot(CsBoardWindow(currBoard), marker, x + squareSize/4, y+squareSize/4, squareSize/2);
940 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
942 /* Masks for XPM pieces. Black and white pieces can have
943 different shapes, but in the interest of retaining my
944 sanity pieces must have the same outline on both light
945 and dark squares, and all pieces must use the same
946 background square colors/images. */
948 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
951 InitAnimState (AnimNr anr)
953 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
954 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
955 c_animBufs[anr+4] = CsBoardWindow(currBoard);
956 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
957 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
964 InitAnimState(Player);
968 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
970 static cairo_t *pieceSource;
971 pieceSource = cairo_create (dest);
972 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
973 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
974 else cairo_paint(pieceSource);
975 cairo_destroy (pieceSource);
976 if(appData.inscriptions[0]) InscribeKanji(dest, piece, 0, 0);
980 InsertPiece (AnimNr anr, ChessSquare piece)
982 CairoOverlayPiece(piece, c_animBufs[anr]);
986 DrawBlank (AnimNr anr, int x, int y, int startColor)
988 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
991 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
992 int srcX, int srcY, int width, int height, int destX, int destY)
995 c_animBufs[anr+4] = CsBoardWindow(currBoard);
996 cr = cairo_create (c_animBufs[anr+destBuf]);
997 cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY);
998 cairo_rectangle (cr, destX, destY, width, height);
1001 if(c_animBufs[anr+destBuf] == CsBoardWindow(currBoard)) // suspect that GTK needs this!
1002 GraphExpose(currBoard, destX, destY, width, height);
1006 SetDragPiece (AnimNr anr, ChessSquare piece)
1010 /* [AS] Arrow highlighting support */
1013 DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr)
1017 cr = cairo_create (cs);
1018 cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y);
1019 for (i=0;i<nr;i++) {
1020 cairo_line_to(cr, arrow[i].x, arrow[i].y);
1022 if(appData.monoMode) { // should we always outline arrow?
1023 cairo_line_to(cr, arrow[0].x, arrow[0].y);
1024 SetPen(cr, 2, "#000000", 0);
1025 cairo_stroke_preserve(cr);
1027 SetPen(cr, 2, appData.highlightSquareColor, 0);
1035 DrawPolygon (Pnt arrow[], int nr)
1037 DoDrawPolygon(CsBoardWindow(currBoard), arrow, nr);
1038 // if(!dual) DoDrawPolygon(csBoardBackup, arrow, nr);
1041 //-------------------- Eval Graph drawing routines (formerly in xevalgraph.h) --------------------
1044 ChoosePen(cairo_t *cr, int i)
1048 SetPen(cr, 1.0, "#000000", 0);
1051 SetPen(cr, 1.0, "#A0A0A0", 1);
1053 case PEN_BLUEDOTTED:
1054 SetPen(cr, 1.0, "#0000FF", 1);
1057 SetPen(cr, 3.0, crWhite, 0);
1060 SetPen(cr, 3.0, crBlack, 0);
1063 SetPen(cr, 3.0, "#E0E0F0", 0);
1068 // [HGM] front-end, added as wrapper to avoid use of LineTo and MoveToEx in other routines (so they can be back-end)
1070 DrawSegment (int x, int y, int *lastX, int *lastY, int penType)
1072 static int curX, curY;
1074 if(penType != PEN_NONE) {
1075 cairo_t *cr = cairo_create(CsBoardWindow(disp));
1076 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
1077 cairo_move_to (cr, curX, curY);
1078 cairo_line_to (cr, x,y);
1079 ChoosePen(cr, penType);
1084 if(lastX != NULL) { *lastX = curX; *lastY = curY; }
1088 // front-end wrapper for drawing functions to do rectangles
1090 DrawRectangle (int left, int top, int right, int bottom, int side, int style)
1094 cr = cairo_create (CsBoardWindow(disp));
1095 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
1096 cairo_rectangle (cr, left, top, right-left, bottom-top);
1099 case 0: ChoosePen(cr, PEN_BOLDWHITE); break;
1100 case 1: ChoosePen(cr, PEN_BOLDBLACK); break;
1101 case 2: ChoosePen(cr, PEN_BACKGD); break;
1107 cairo_rectangle (cr, left, top, right-left-1, bottom-top-1);
1108 ChoosePen(cr, PEN_BLACK);
1115 // front-end wrapper for putting text in graph
1117 DrawEvalText (char *buf, int cbBuf, int y)
1119 // the magic constants 8 and 5 should really be derived from the font size somehow
1120 cairo_text_extents_t extents;
1121 cairo_t *cr = cairo_create(CsBoardWindow(disp));
1123 /* GTK-TODO this has to go into the font-selection */
1124 cairo_select_font_face (cr, "Sans",
1125 CAIRO_FONT_SLANT_NORMAL,
1126 CAIRO_FONT_WEIGHT_NORMAL);
1127 cairo_set_font_size (cr, 12.0);
1130 cairo_text_extents (cr, buf, &extents);
1132 cairo_move_to (cr, MarginX - 2 - 8*cbBuf, y+5);
1133 cairo_text_path (cr, buf);
1134 cairo_set_source_rgb (cr, 0.0, 0.0, 0);
1135 cairo_fill_preserve (cr);
1136 cairo_set_source_rgb (cr, 0, 1.0, 0);
1137 cairo_set_line_width (cr, 0.1);