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];
178 #define BoardSize int
180 InitDrawingSizes (BoardSize boardSize, int flags)
181 { // [HGM] resize is functional now, but for board format changes only (nr of ranks, files)
182 int boardWidth, boardHeight;
183 static int oldWidth, oldHeight;
184 static VariantClass oldVariant;
185 static int oldTwoBoards = 0, oldNrOfFiles = 0;
187 if(!mainOptions[W_BOARD].handle) return;
189 if(boardSize == -2 && gameInfo.variant != oldVariant
190 && oldNrOfFiles && oldNrOfFiles != BOARD_WIDTH) { // called because variant switch changed board format
191 squareSize = ((squareSize + lineGap) * oldNrOfFiles + 0.5*BOARD_WIDTH) / BOARD_WIDTH; // keep total width fixed
192 if(appData.overrideLineGap < 0) lineGap = squareSize < 37 ? 1 : squareSize < 59 ? 2 : squareSize < 116 ? 3 : 4;
193 squareSize -= lineGap;
197 oldNrOfFiles = BOARD_WIDTH;
199 if(oldTwoBoards && !twoBoards) PopDown(DummyDlg);
200 oldTwoBoards = twoBoards;
202 if(appData.overrideLineGap >= 0) lineGap = appData.overrideLineGap;
203 boardWidth = lineGap + BOARD_WIDTH * (squareSize + lineGap);
204 boardHeight = lineGap + BOARD_HEIGHT * (squareSize + lineGap);
206 if(boardWidth != oldWidth || boardHeight != oldHeight) { // do resizing stuff only if size actually changed
208 oldWidth = boardWidth; oldHeight = boardHeight;
210 CreateAnyPieces(0); // redo texture scaling
213 * Inhibit shell resizing.
215 ResizeBoardWindow(boardWidth, boardHeight, 0);
220 // [HGM] pieces: tailor piece bitmaps to needs of specific variant
223 if(gameInfo.variant != oldVariant) { // and only if variant changed
225 SelectPieces(gameInfo.variant);
227 oldVariant = gameInfo.variant;
233 ExposeRedraw (Option *graph, int x, int y, int w, int h)
234 { // copy a selected part of the buffer bitmap to the display
235 cairo_t *cr = cairo_create((cairo_surface_t *) graph->textValue);
236 cairo_set_source_surface(cr, (cairo_surface_t *) graph->choice, 0, 0);
237 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
238 cairo_rectangle(cr, x, y, w, h);
244 CreatePNGBoard (char *s, int kind)
247 static float n[2] = { 1., 1. };
248 if(!appData.useBitmaps || s == NULL || *s == 0 || *s == '*') { useTexture &= ~(kind+1); return; }
249 textureW[kind] = 0; // prevents bitmap from being used if not succesfully loaded
250 if(strstr(s, ".png")) {
251 cairo_surface_t *img = cairo_image_surface_create_from_png (s);
255 if(pngOriginalBoardBitmap[kind]) cairo_surface_destroy(pngOriginalBoardBitmap[kind]);
256 if(n[kind] != 1.) cairo_surface_destroy(pngBoardBitmap[kind]);
257 useTexture |= kind + 1; pngOriginalBoardBitmap[kind] = img;
258 w = textureW[kind] = cairo_image_surface_get_width (img);
259 h = textureH[kind] = cairo_image_surface_get_height (img);
261 while((q = strchr(p+1, '-'))) p = q; // find last '-'
262 if(strlen(p) < 11 && sscanf(p, "-%dx%d.pn%c", &f, &r, &c) == 3 && c == 'g') {
263 if(f == 0 || r == 0) f = BOARD_WIDTH, r = BOARD_HEIGHT; // 0x0 means 'fits any', so make it fit
264 textureW[kind] = (w*BOARD_WIDTH)/f; // sync cutting locations with square pattern
265 textureH[kind] = (h*BOARD_HEIGHT)/r;
266 n[kind] = r*squareSize/h; // scale to make it fit exactly vertically
268 if((p = strstr(s, "xq")) && (p == s || p[-1] == '/')) { // assume full-board image for Xiangqi
269 while(0.8*squareSize*BOARD_WIDTH > n[kind]*w || 0.8*squareSize*BOARD_HEIGHT > n[kind]*h) n[kind]++;
271 while(squareSize > n[kind]*w || squareSize > n[kind]*h) n[kind]++;
273 if(n[kind] == 1.) pngBoardBitmap[kind] = img; else {
274 // create scaled-up copy of the raw png image when it was too small
275 cairo_surface_t *cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, n[kind]*w, n[kind]*h);
276 cairo_t *cr = cairo_create(cs);
277 pngBoardBitmap[kind] = cs; textureW[kind] *= n[kind]; textureH[kind] *= n[kind];
278 // cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
279 cairo_scale(cr, n[kind], n[kind]);
280 cairo_set_source_surface (cr, img, 0, 0);
288 char *pngPieceNames[] = // must be in same order as internal piece encoding
289 { "Pawn", "Knight", "Bishop", "Rook", "Queen", "Advisor", "Elephant", "Archbishop", "Marshall", "Gold", "Commoner",
290 "Canon", "Nightrider", "CrownedBishop", "CrownedRook", "Crown", "Chancellor", "Hawk", "Lance", "Cobra", "Unicorn", "Lion",
291 "GoldPawn", "Claw", "PromoHorse", "PromoDragon", "GoldLance", "PromoSword", "Prince", "Phoenix", "Kylin", "PromoRook", "PromoHSword",
292 "Dolphin", "Sword", "Leopard", "HSword", "GoldSilver", "Princess", "HCrown", "Knight", "Elephant", "PromoBishop", "King",
293 "Claw", "GoldKnight", "GoldLance", "GoldSilver", NULL
296 char *backupPiece[] = { "Princess", NULL, NULL, NULL, NULL, NULL, NULL,
297 NULL, NULL, NULL, NULL, NULL, NULL, "King", "Queen", "Lion" }; // pieces that map on other when not kanji
300 LoadSVG (char *dir, int color, int piece, int retry)
303 RsvgHandle *svg=svgPieces[color][piece];
304 RsvgDimensionData svg_dimensions;
305 GError *svgerror=NULL;
306 cairo_surface_t *img;
308 char *name = (retry ? backupPiece[piece - WhiteGrasshopper] : pngPieceNames[piece]);
310 if(!name) return NULL;
312 snprintf(buf, MSG_SIZ, "%s/%s%s.svg", dir, color ? "Black" : "White", name);
315 svg = rsvg_handle_new_from_file(buf, &svgerror);
316 if(!svg && *appData.inscriptions) { // if there is no piece-specific SVG, but we make inscriptions, try general background
317 snprintf(buf, MSG_SIZ, "%s/%sTile.svg", dir, color ? "Black" : "White");
318 svg = rsvg_handle_new_from_file(buf, &svgerror);
323 rsvg_handle_get_dimensions(svg, &svg_dimensions);
324 img = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, squareSize, squareSize);
326 cr = cairo_create(img);
327 cairo_scale(cr, squareSize/(double) svg_dimensions.width, squareSize/(double) svg_dimensions.height);
328 rsvg_handle_render_cairo(svg, cr);
329 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
330 if(pngPieceImages[color][piece]) cairo_surface_destroy(pngPieceImages[color][piece]);
331 pngPieceImages[color][piece] = img;
337 if(!retry && piece >= WhiteGrasshopper && piece <= WhiteNothing) // pieces that are only different in kanji sets
338 return LoadSVG(dir, color, piece, 1);
340 g_error_free(svgerror);
345 ScaleOnePiece (int color, int piece)
349 cairo_surface_t *img, *cs;
354 svgPieces[color][piece] = LoadSVG("", color, piece, 0); // this fills pngPieceImages if we had cached svg with bitmap of wanted size
356 if(!pngPieceImages[color][piece]) { // we don't have cached bitmap (implying we did not have cached svg)
357 if(*appData.pieceDirectory) { // user specified piece directory
358 snprintf(buf, MSG_SIZ, "%s/%s%s.png", appData.pieceDirectory, color ? "Black" : "White", pngPieceNames[piece]);
359 img = cairo_image_surface_create_from_png (buf); // try if there are png pieces there
360 if(cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) { // there were not
361 svgPieces[color][piece] = LoadSVG(appData.pieceDirectory, color, piece, 0); // so try if he has svg there
362 } else pngPieceImages[color][piece] = img;
366 if(!pngPieceImages[color][piece]) { // we still did not manage to acquire a piece bitmap
367 static int warned = 0;
368 if(!(svgPieces[color][piece] = LoadSVG(svgDir, color, piece, 0)) && !warned) { // try to fall back on installed svg
369 char *msg = _("No default pieces installed!\nSelect your own using '-pieceImageDirectory'.");
370 printf("%s\n", msg); // give up
371 DisplayError(msg, 0);
372 warned = 1; // prevent error message being repeated for each piece type
376 img = pngPieceImages[color][piece];
378 // create new bitmap to hold scaled piece image (and remove any old)
379 if(pngPieceBitmaps2[color][piece]) cairo_surface_destroy (pngPieceBitmaps2[color][piece]);
380 pngPieceBitmaps2[color][piece] = cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
384 // scaled copying of the raw png image
385 cr = cairo_create(cs);
386 w = cairo_image_surface_get_width (img);
387 h = cairo_image_surface_get_height (img);
388 cairo_scale(cr, squareSize/w, squareSize/h);
389 cairo_set_source_surface (cr, img, 0, 0);
393 if(!appData.trueColors || !*appData.pieceDirectory) { // operate on bitmap to color it (king-size hack...)
394 int stride = cairo_image_surface_get_stride(cs)/4;
395 int *buf = (int *) cairo_image_surface_get_data(cs);
397 sscanf(color ? appData.blackPieceColor+1 : appData.whitePieceColor+1, "%x", &p); // replacement color
398 cairo_surface_flush(cs);
399 for(i=0; i<squareSize; i++) for(j=0; j<squareSize; j++) {
402 unsigned int c = buf[i*stride + j];
403 a = c >> 24; r = c >> 16 & 255; // alpha and red, where red is the 'white' weight, since white is #FFFFCC in the source images
404 f = (color ? a - r : r)/255.; // fraction of black or white in the mix that has to be replaced
405 buf[i*stride + j] = c & 0xFF000000; // alpha channel is kept at same opacity
406 buf[i*stride + j] += ((int)(f*(p&0xFF0000)) & 0xFF0000) + ((int)(f*(p&0xFF00)) & 0xFF00) + (int)(f*(p&0xFF)); // add desired fraction of new color
407 if(color) buf[i*stride + j] += r | r << 8 | r << 16; // details on black pieces get their weight added in pure white
408 if(appData.monoMode) {
409 if(a < 64) buf[i*stride + j] = 0; // if not opaque enough, totally transparent
410 else if(2*r < a) buf[i*stride + j] = 0xFF000000; // if not light enough, totally black
411 else buf[i*stride + j] = 0xFFFFFFFF; // otherwise white
414 cairo_surface_mark_dirty(cs);
423 for(p=0; pngPieceNames[p]; p++) {
427 SelectPieces(gameInfo.variant);
431 CreateAnyPieces (int p)
432 { // [HGM] taken out of main
433 if(p) CreatePNGPieces();
434 CreatePNGBoard(appData.liteBackTextureFile, 1);
435 CreatePNGBoard(appData.darkBackTextureFile, 0);
439 InitDrawingParams (int reloadPieces)
443 for(i=0; i<2; i++) for(p=0; p<BlackPawn+4; p++) {
444 if(pngPieceImages[i][p]) cairo_surface_destroy(pngPieceImages[i][p]);
445 pngPieceImages[i][p] = NULL;
446 if(svgPieces[i][p]) rsvg_handle_close(svgPieces[i][p], NULL);
447 svgPieces[i][p] = NULL;
452 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
455 Color (char *col, int n)
458 sscanf(col, "#%x", &c);
464 SetPen (cairo_t *cr, float w, char *col, int dash)
466 static const double dotted[] = {4.0, 4.0};
467 static int len = sizeof(dotted) / sizeof(dotted[0]);
468 cairo_set_line_width (cr, w);
469 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
470 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
473 void DrawSeekAxis( int x, int y, int xTo, int yTo )
478 cr = cairo_create (csBoardWindow);
480 cairo_move_to (cr, x, y);
481 cairo_line_to(cr, xTo, yTo );
483 SetPen(cr, 2, "#000000", 0);
488 GraphExpose(currBoard, x-1, yTo-1, xTo-x+2, y-yTo+2);
491 void DrawSeekBackground( int left, int top, int right, int bottom )
493 cairo_t *cr = cairo_create (csBoardWindow);
495 cairo_rectangle (cr, left, top, right-left, bottom-top);
497 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
502 GraphExpose(currBoard, left, top, right-left, bottom-top);
505 void DrawSeekText(char *buf, int x, int y)
507 cairo_t *cr = cairo_create (csBoardWindow);
509 cairo_select_font_face (cr, "Sans",
510 CAIRO_FONT_SLANT_NORMAL,
511 CAIRO_FONT_WEIGHT_NORMAL);
513 cairo_set_font_size (cr, 12.0);
515 cairo_move_to (cr, x, y+4);
516 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
517 cairo_show_text( cr, buf);
521 GraphExpose(currBoard, x-5, y-10, 60, 15);
524 void DrawSeekDot(int x, int y, int colorNr)
526 cairo_t *cr = cairo_create (csBoardWindow);
527 int square = colorNr & 0x80;
531 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
533 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
535 SetPen(cr, 2, "#000000", 0);
536 cairo_stroke_preserve(cr);
538 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
539 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
540 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
546 GraphExpose(currBoard, x-squareSize/8, y-squareSize/8, 2*(squareSize/8), 2*(squareSize/8));
550 InitDrawingHandle (Option *opt)
552 csBoardWindow = DRAWABLE(opt);
560 if (lineGap == 0) return;
562 /* [HR] Split this into 2 loops for non-square boards. */
564 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
565 gridSegments[i].x1 = 0;
567 lineGap + BOARD_WIDTH * (squareSize + lineGap);
568 gridSegments[i].y1 = gridSegments[i].y2
569 = lineGap / 2 + (i * (squareSize + lineGap));
572 for (j = 0; j < BOARD_WIDTH + 1; j++) {
573 gridSegments[j + i].y1 = 0;
574 gridSegments[j + i].y2 =
575 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
576 gridSegments[j + i].x1 = gridSegments[j + i].x2
577 = lineGap / 2 + (j * (squareSize + lineGap));
584 /* draws a grid starting around Nx, Ny squares starting at x,y */
586 float odd = (lineGap & 1)/2.;
590 cr = cairo_create (csBoardWindow);
592 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
593 SetPen(cr, lineGap, "#000000", 0);
596 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
598 int h = (gridSegments[i].y1 == gridSegments[i].y2); // horizontal
599 cairo_move_to (cr, gridSegments[i].x1 + !h*odd, gridSegments[i].y1 + h*odd);
600 cairo_line_to (cr, gridSegments[i].x2 + !h*odd, gridSegments[i].y2 + h*odd);
611 DrawBorder (int x, int y, int type, int odd)
617 case 0: col = "#000000"; break;
618 case 1: col = appData.highlightSquareColor; break;
619 case 2: col = appData.premoveHighlightColor; break;
620 default: col = "#808080"; break; // cannot happen
622 cr = cairo_create(csBoardWindow);
623 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
624 cairo_rectangle(cr, x+odd/2., y+odd/2., squareSize+lineGap, squareSize+lineGap);
625 SetPen(cr, lineGap, col, 0);
628 GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap+odd, squareSize+2*lineGap+odd);
632 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
634 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
635 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
637 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
638 if(textureW[kind] < W*squareSize)
639 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
641 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
642 if(textureH[kind] < H*squareSize)
643 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
645 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
650 DrawLogo (Option *opt, void *logo)
652 cairo_surface_t *img;
656 if(!logo || !opt) return;
657 img = cairo_image_surface_create_from_png (logo);
658 w = cairo_image_surface_get_width (img);
659 h = cairo_image_surface_get_height (img);
660 cr = cairo_create(DRAWABLE(opt));
661 // cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
662 cairo_scale(cr, (float)opt->max/w, (float)opt->value/h);
663 cairo_set_source_surface (cr, img, 0, 0);
666 cairo_surface_destroy (img);
667 GraphExpose(opt, 0, 0, appData.logoSize, appData.logoSize/2);
671 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
672 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
676 cr = cairo_create (dest);
678 if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) {
679 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
680 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
681 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
684 } else { // evenly colored squares
687 case 0: col = appData.darkSquareColor; break;
688 case 1: col = appData.lightSquareColor; break;
689 case 2: col = "#000000"; break;
690 default: col = "#808080"; break; // cannot happen
692 SetPen(cr, 2.0, col, 0);
693 cairo_rectangle (cr, fac*x, fac*y, squareSize, squareSize);
694 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
701 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
706 if ((int)piece < (int) BlackPawn) {
712 if(appData.upsideDown && flipView) kind = 1 - kind; // swap white and black pieces
713 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
714 cr = cairo_create (dest);
715 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
720 static char *markerColor[8] = { "#FFFF00", "#FF0000", "#00FF00", "#0000FF", "#00FFFF", "#FF00FF", "#FFFFFF", "#000000" };
723 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
727 cr = cairo_create(cs);
728 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
729 if(appData.monoMode) {
730 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
731 cairo_stroke_preserve(cr);
732 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
734 SetPen(cr, 2, markerColor[marker-1], 0);
742 DrawDot (int marker, int x, int y, int r)
743 { // used for atomic captures; no need to draw on backup
744 DoDrawDot(csBoardWindow, marker, x, y, r);
745 GraphExpose(currBoard, x-r, y-r, 2*r, 2*r);
749 DrawUnicode (cairo_surface_t *canvas, char *string, int x, int y, char id, int flip)
751 // cairo_text_extents_t te;
755 PangoFontDescription *desc;
757 char fontName[MSG_SIZ];
759 cr = cairo_create (canvas);
760 layout = pango_cairo_create_layout(cr);
761 pango_layout_set_text(layout, string, -1);
762 snprintf(fontName, MSG_SIZ, "Sans Normal %dpx", 5*squareSize/8);
763 desc = pango_font_description_from_string(fontName);
764 pango_layout_set_font_description(layout, desc);
765 pango_font_description_free(desc);
766 pango_layout_get_pixel_extents(layout, NULL, &r);
767 cairo_translate(cr, x + squareSize/2 - s*r.width/2, y + (8+s)*squareSize/16 - s*r.height/2);
768 if(s < 0) cairo_rotate(cr, G_PI);
769 cairo_set_source_rgb(cr, (id == '+' ? 1.0 : 0.0), 0.0, 0.0);
770 pango_cairo_update_layout(cr, layout);
771 pango_cairo_show_layout(cr, layout);
772 g_object_unref(layout);
777 DrawText (char *string, int x, int y, int align)
780 cairo_text_extents_t te;
783 cr = cairo_create (csBoardWindow);
784 cairo_select_font_face (cr, "Sans",
785 CAIRO_FONT_SLANT_NORMAL,
786 CAIRO_FONT_WEIGHT_BOLD);
788 cairo_set_font_size (cr, align < 0 ? 2*squareSize/3 : squareSize/4);
789 // calculate where it goes
790 cairo_text_extents (cr, string, &te);
793 xx += squareSize - te.width - te.x_bearing - 1;
794 yy += squareSize - te.height - te.y_bearing - 1;
795 } else if (align == 2) {
796 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
797 } else if (align == 3) {
798 xx += squareSize - te.width -te.x_bearing - 1;
799 yy += -te.y_bearing + 3;
800 } else if (align == 4) {
801 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
804 cairo_move_to (cr, xx-1, yy);
805 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
806 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
807 cairo_show_text (cr, string);
812 InscribeKanji (cairo_surface_t *canvas, ChessSquare piece, int x, int y)
814 char *p, *q, buf[10];
815 int n, flip = appData.upsideDown && flipView == (piece < BlackPawn);
816 if(piece == EmptySquare) return;
817 if(piece >= BlackPawn) piece = BLACK_TO_WHITE piece;
818 p = appData.inscriptions;
820 while(piece > WhitePawn) {
821 if(*p++ == NULLCHAR) {
822 if(n != WhiteKing) return;
827 while((*p & 0xC0) == 0x80) p++; // skip UTF-8 continuation bytes
831 for(q=buf; (*++q & 0xC0) == 0x80;);
833 DrawUnicode(canvas, buf, x, y, PieceToChar(n), flip);
837 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *tString, char *bString, int align)
838 { // basic front-end board-draw function: takes care of everything that can be in square:
839 // piece, background, coordinate/count, marker dot
841 if (piece == EmptySquare) {
842 BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
844 pngDrawPiece(csBoardWindow, piece, square_color, x, y);
845 if(appData.inscriptions[0]) InscribeKanji(csBoardWindow, piece, x, y);
848 if(align) { // square carries inscription (coord or piece count)
849 if(align > 1) DrawText(tString, x, y, align); // top (rank or count)
850 if(bString && *bString) DrawText(bString, x, y, 1); // bottom (always lower right file ID)
853 if(marker) { // print fat marker dot, if requested
854 DoDrawDot(csBoardWindow, marker, x + squareSize/4, y+squareSize/4, squareSize/2);
858 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
860 /* Masks for XPM pieces. Black and white pieces can have
861 different shapes, but in the interest of retaining my
862 sanity pieces must have the same outline on both light
863 and dark squares, and all pieces must use the same
864 background square colors/images. */
866 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
869 InitAnimState (AnimNr anr)
871 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
872 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
873 c_animBufs[anr+4] = csBoardWindow;
874 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
875 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
882 InitAnimState(Player);
886 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
888 static cairo_t *pieceSource;
889 pieceSource = cairo_create (dest);
890 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
891 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
892 else cairo_paint(pieceSource);
893 cairo_destroy (pieceSource);
894 if(appData.inscriptions[0]) InscribeKanji(dest, piece, 0, 0);
898 InsertPiece (AnimNr anr, ChessSquare piece)
900 CairoOverlayPiece(piece, c_animBufs[anr]);
904 DrawBlank (AnimNr anr, int x, int y, int startColor)
906 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
909 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
910 int srcX, int srcY, int width, int height, int destX, int destY)
913 c_animBufs[anr+4] = csBoardWindow;
914 cr = cairo_create (c_animBufs[anr+destBuf]);
915 cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY);
916 cairo_rectangle (cr, destX, destY, width, height);
919 if(c_animBufs[anr+destBuf] == csBoardWindow) // suspect that GTK needs this!
920 GraphExpose(currBoard, destX, destY, width, height);
924 SetDragPiece (AnimNr anr, ChessSquare piece)
928 /* [AS] Arrow highlighting support */
931 DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr)
935 cr = cairo_create (cs);
936 cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y);
938 cairo_line_to(cr, arrow[i].x, arrow[i].y);
940 if(appData.monoMode) { // should we always outline arrow?
941 cairo_line_to(cr, arrow[0].x, arrow[0].y);
942 SetPen(cr, 2, "#000000", 0);
943 cairo_stroke_preserve(cr);
945 SetPen(cr, 2, appData.highlightSquareColor, 0);
953 DrawPolygon (Pnt arrow[], int nr)
955 DoDrawPolygon(csBoardWindow, arrow, nr);
956 // if(!dual) DoDrawPolygon(csBoardBackup, arrow, nr);
959 //-------------------- Eval Graph drawing routines (formerly in xevalgraph.h) --------------------
962 ChoosePen(cairo_t *cr, int i)
966 SetPen(cr, 1.0, "#000000", 0);
969 SetPen(cr, 1.0, "#A0A0A0", 1);
972 SetPen(cr, 1.0, "#0000FF", 1);
975 SetPen(cr, 3.0, crWhite, 0);
978 SetPen(cr, 3.0, crBlack, 0);
981 SetPen(cr, 3.0, "#E0E0F0", 0);
986 // [HGM] front-end, added as wrapper to avoid use of LineTo and MoveToEx in other routines (so they can be back-end)
988 DrawSegment (int x, int y, int *lastX, int *lastY, int penType)
990 static int curX, curY;
992 if(penType != PEN_NONE) {
993 cairo_t *cr = cairo_create(DRAWABLE(disp));
994 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
995 cairo_move_to (cr, curX, curY);
996 cairo_line_to (cr, x,y);
997 ChoosePen(cr, penType);
1002 if(lastX != NULL) { *lastX = curX; *lastY = curY; }
1006 // front-end wrapper for drawing functions to do rectangles
1008 DrawRectangle (int left, int top, int right, int bottom, int side, int style)
1012 cr = cairo_create (DRAWABLE(disp));
1013 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
1014 cairo_rectangle (cr, left, top, right-left, bottom-top);
1017 case 0: ChoosePen(cr, PEN_BOLDWHITE); break;
1018 case 1: ChoosePen(cr, PEN_BOLDBLACK); break;
1019 case 2: ChoosePen(cr, PEN_BACKGD); break;
1025 cairo_rectangle (cr, left, top, right-left-1, bottom-top-1);
1026 ChoosePen(cr, PEN_BLACK);
1033 // front-end wrapper for putting text in graph
1035 DrawEvalText (char *buf, int cbBuf, int y)
1037 // the magic constants 8 and 5 should really be derived from the font size somehow
1038 cairo_text_extents_t extents;
1039 cairo_t *cr = cairo_create(DRAWABLE(disp));
1041 /* GTK-TODO this has to go into the font-selection */
1042 cairo_select_font_face (cr, "Sans",
1043 CAIRO_FONT_SLANT_NORMAL,
1044 CAIRO_FONT_WEIGHT_NORMAL);
1045 cairo_set_font_size (cr, 12.0);
1048 cairo_text_extents (cr, buf, &extents);
1050 cairo_move_to (cr, MarginX - 2 - 8*cbBuf, y+5);
1051 cairo_text_path (cr, buf);
1052 cairo_set_source_rgb (cr, 0.0, 0.0, 0);
1053 cairo_fill_preserve (cr);
1054 cairo_set_source_rgb (cr, 0, 1.0, 0);
1055 cairo_set_line_width (cr, 0.1);