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 if(strstr(s, ".png")) {
245 cairo_surface_t *img = cairo_image_surface_create_from_png (s);
249 if(pngOriginalBoardBitmap[kind]) cairo_surface_destroy(pngOriginalBoardBitmap[kind]);
250 if(n[kind] != 1.) cairo_surface_destroy(pngBoardBitmap[kind]);
251 useTexture |= kind + 1; pngOriginalBoardBitmap[kind] = img;
252 w = textureW[kind] = cairo_image_surface_get_width (img);
253 h = textureH[kind] = cairo_image_surface_get_height (img);
255 while((q = strchr(p+1, '-'))) p = q; // find last '-'
256 if(strlen(p) < 11 && sscanf(p, "-%dx%d.pn%c", &f, &r, &c) == 3 && c == 'g') {
257 if(f == 0 || r == 0) f = BOARD_WIDTH, r = BOARD_HEIGHT; // 0x0 means 'fits any', so make it fit
258 textureW[kind] = (w*BOARD_WIDTH)/f; // sync cutting locations with square pattern
259 textureH[kind] = (h*BOARD_HEIGHT)/r;
260 n[kind] = r*squareSize/h; // scale to make it fit exactly vertically
262 if((p = strstr(s, "xq")) && (p == s || p[-1] == '/')) { // assume full-board image for Xiangqi
263 while(0.8*squareSize*BOARD_WIDTH > n[kind]*w || 0.8*squareSize*BOARD_HEIGHT > n[kind]*h) n[kind]++;
265 while(squareSize > n[kind]*w || squareSize > n[kind]*h) n[kind]++;
267 if(n[kind] == 1.) pngBoardBitmap[kind] = img; else {
268 // create scaled-up copy of the raw png image when it was too small
269 cairo_surface_t *cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, n[kind]*w, n[kind]*h);
270 cairo_t *cr = cairo_create(cs);
271 pngBoardBitmap[kind] = cs; textureW[kind] *= n[kind]; textureH[kind] *= n[kind];
272 // cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
273 cairo_scale(cr, n[kind], n[kind]);
274 cairo_set_source_surface (cr, img, 0, 0);
282 char *pngPieceNames[] = // must be in same order as internal piece encoding
283 { "Pawn", "Knight", "Bishop", "Rook", "Queen", "Advisor", "Elephant", "Archbishop", "Marshall", "Gold", "Commoner",
284 "Canon", "Nightrider", "CrownedBishop", "CrownedRook", "Princess", "Chancellor", "Hawk", "Lance", "Cobra", "Unicorn", "Lion",
285 "GoldPawn", "HSword", "PromoHorse", "PromoDragon", "Leopard", "PromoSword", "Prince", "Phoenix", "Kylin", "PromoRook", "PromoHSword",
286 "Dolphin", "Chancellor", "Unicorn", "Hawk", "Sword", "Princess", "HCrown", "Knight", "Elephant", "PromoBishop", "King",
287 "Claw", "GoldKnight", "GoldLance", "GoldSilver", NULL
290 char *backupPiece[] = { "King", "Queen", "Lion" }; // pieces that map on other when not kanji
293 LoadSVG (char *dir, int color, int piece, int retry)
296 RsvgHandle *svg=svgPieces[color][piece];
297 RsvgDimensionData svg_dimensions;
298 GError *svgerror=NULL;
299 cairo_surface_t *img;
302 snprintf(buf, MSG_SIZ, "%s/%s%s.svg", dir, color ? "Black" : "White",
303 retry ? backupPiece[piece - WhiteMonarch] : pngPieceNames[piece]);
305 if(svg || *dir && (svg = rsvg_handle_new_from_file(buf, &svgerror))) {
307 rsvg_handle_get_dimensions(svg, &svg_dimensions);
308 img = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, squareSize, squareSize);
310 cr = cairo_create(img);
311 cairo_scale(cr, squareSize/(double) svg_dimensions.width, squareSize/(double) svg_dimensions.height);
312 rsvg_handle_render_cairo(svg, cr);
313 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
314 if(pngPieceImages[color][piece]) cairo_surface_destroy(pngPieceImages[color][piece]);
315 pngPieceImages[color][piece] = img;
321 if(!retry && piece >= WhiteMonarch && piece <= WhiteNothing) // pieces that are only different in kanji sets
322 return LoadSVG(dir, color, piece, 1);
324 g_error_free(svgerror);
329 ScaleOnePiece (int color, int piece)
333 cairo_surface_t *img, *cs;
338 svgPieces[color][piece] = LoadSVG("", color, piece, 0); // this fills pngPieceImages if we had cached svg with bitmap of wanted size
340 if(!pngPieceImages[color][piece]) { // we don't have cached bitmap (implying we did not have cached svg)
341 if(*appData.pieceDirectory) { // user specified piece directory
342 snprintf(buf, MSG_SIZ, "%s/%s%s.png", appData.pieceDirectory, color ? "Black" : "White", pngPieceNames[piece]);
343 img = cairo_image_surface_create_from_png (buf); // try if there are png pieces there
344 if(cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) { // there were not
345 svgPieces[color][piece] = LoadSVG(appData.pieceDirectory, color, piece, 0); // so try if he has svg there
346 } else pngPieceImages[color][piece] = img;
350 if(!pngPieceImages[color][piece]) { // we still did not manage to acquire a piece bitmap
351 static int warned = 0;
352 if(!(svgPieces[color][piece] = LoadSVG(svgDir, color, piece, 0)) && !warned) { // try to fall back on installed svg
353 char *msg = _("No default pieces installed!\nSelect your own using '-pieceImageDirectory'.");
354 printf("%s\n", msg); // give up
355 DisplayError(msg, 0);
356 warned = 1; // prevent error message being repeated for each piece type
360 img = pngPieceImages[color][piece];
362 // create new bitmap to hold scaled piece image (and remove any old)
363 if(pngPieceBitmaps2[color][piece]) cairo_surface_destroy (pngPieceBitmaps2[color][piece]);
364 pngPieceBitmaps2[color][piece] = cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
368 // scaled copying of the raw png image
369 cr = cairo_create(cs);
370 w = cairo_image_surface_get_width (img);
371 h = cairo_image_surface_get_height (img);
372 cairo_scale(cr, squareSize/w, squareSize/h);
373 cairo_set_source_surface (cr, img, 0, 0);
377 if(!appData.trueColors || !*appData.pieceDirectory) { // operate on bitmap to color it (king-size hack...)
378 int stride = cairo_image_surface_get_stride(cs)/4;
379 int *buf = (int *) cairo_image_surface_get_data(cs);
381 sscanf(color ? appData.blackPieceColor+1 : appData.whitePieceColor+1, "%x", &p); // replacement color
382 cairo_surface_flush(cs);
383 for(i=0; i<squareSize; i++) for(j=0; j<squareSize; j++) {
386 unsigned int c = buf[i*stride + j];
387 a = c >> 24; r = c >> 16 & 255; // alpha and red, where red is the 'white' weight, since white is #FFFFCC in the source images
388 f = (color ? a - r : r)/255.; // fraction of black or white in the mix that has to be replaced
389 buf[i*stride + j] = c & 0xFF000000; // alpha channel is kept at same opacity
390 buf[i*stride + j] += ((int)(f*(p&0xFF0000)) & 0xFF0000) + ((int)(f*(p&0xFF00)) & 0xFF00) + (int)(f*(p&0xFF)); // add desired fraction of new color
391 if(color) buf[i*stride + j] += r | r << 8 | r << 16; // details on black pieces get their weight added in pure white
392 if(appData.monoMode) {
393 if(a < 64) buf[i*stride + j] = 0; // if not opaque enough, totally transparent
394 else if(2*r < a) buf[i*stride + j] = 0xFF000000; // if not light enough, totally black
395 else buf[i*stride + j] = 0xFFFFFFFF; // otherwise white
398 cairo_surface_mark_dirty(cs);
407 for(p=0; pngPieceNames[p]; p++) {
411 SelectPieces(gameInfo.variant);
415 CreateAnyPieces (int p)
416 { // [HGM] taken out of main
417 if(p) CreatePNGPieces();
418 CreatePNGBoard(appData.liteBackTextureFile, 1);
419 CreatePNGBoard(appData.darkBackTextureFile, 0);
423 InitDrawingParams (int reloadPieces)
427 for(i=0; i<2; i++) for(p=0; p<BlackPawn+4; p++) {
428 if(pngPieceImages[i][p]) cairo_surface_destroy(pngPieceImages[i][p]);
429 pngPieceImages[i][p] = NULL;
430 if(svgPieces[i][p]) rsvg_handle_close(svgPieces[i][p], NULL);
431 svgPieces[i][p] = NULL;
436 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
439 Color (char *col, int n)
442 sscanf(col, "#%x", &c);
448 SetPen (cairo_t *cr, float w, char *col, int dash)
450 static const double dotted[] = {4.0, 4.0};
451 static int len = sizeof(dotted) / sizeof(dotted[0]);
452 cairo_set_line_width (cr, w);
453 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
454 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
457 void DrawSeekAxis( int x, int y, int xTo, int yTo )
462 cr = cairo_create (csBoardWindow);
464 cairo_move_to (cr, x, y);
465 cairo_line_to(cr, xTo, yTo );
467 SetPen(cr, 2, "#000000", 0);
472 GraphExpose(currBoard, x-1, yTo-1, xTo-x+2, y-yTo+2);
475 void DrawSeekBackground( int left, int top, int right, int bottom )
477 cairo_t *cr = cairo_create (csBoardWindow);
479 cairo_rectangle (cr, left, top, right-left, bottom-top);
481 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
486 GraphExpose(currBoard, left, top, right-left, bottom-top);
489 void DrawSeekText(char *buf, int x, int y)
491 cairo_t *cr = cairo_create (csBoardWindow);
493 cairo_select_font_face (cr, "Sans",
494 CAIRO_FONT_SLANT_NORMAL,
495 CAIRO_FONT_WEIGHT_NORMAL);
497 cairo_set_font_size (cr, 12.0);
499 cairo_move_to (cr, x, y+4);
500 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
501 cairo_show_text( cr, buf);
505 GraphExpose(currBoard, x-5, y-10, 60, 15);
508 void DrawSeekDot(int x, int y, int colorNr)
510 cairo_t *cr = cairo_create (csBoardWindow);
511 int square = colorNr & 0x80;
515 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
517 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
519 SetPen(cr, 2, "#000000", 0);
520 cairo_stroke_preserve(cr);
522 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
523 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
524 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
530 GraphExpose(currBoard, x-squareSize/8, y-squareSize/8, 2*(squareSize/8), 2*(squareSize/8));
534 InitDrawingHandle (Option *opt)
536 csBoardWindow = DRAWABLE(opt);
544 if (lineGap == 0) return;
546 /* [HR] Split this into 2 loops for non-square boards. */
548 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
549 gridSegments[i].x1 = 0;
551 lineGap + BOARD_WIDTH * (squareSize + lineGap);
552 gridSegments[i].y1 = gridSegments[i].y2
553 = lineGap / 2 + (i * (squareSize + lineGap));
556 for (j = 0; j < BOARD_WIDTH + 1; j++) {
557 gridSegments[j + i].y1 = 0;
558 gridSegments[j + i].y2 =
559 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
560 gridSegments[j + i].x1 = gridSegments[j + i].x2
561 = lineGap / 2 + (j * (squareSize + lineGap));
568 /* draws a grid starting around Nx, Ny squares starting at x,y */
570 float odd = (lineGap & 1)/2.;
574 cr = cairo_create (csBoardWindow);
576 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
577 SetPen(cr, lineGap, "#000000", 0);
580 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
582 int h = (gridSegments[i].y1 == gridSegments[i].y2); // horizontal
583 cairo_move_to (cr, gridSegments[i].x1 + !h*odd, gridSegments[i].y1 + h*odd);
584 cairo_line_to (cr, gridSegments[i].x2 + !h*odd, gridSegments[i].y2 + h*odd);
595 DrawBorder (int x, int y, int type, int odd)
601 case 0: col = "#000000"; break;
602 case 1: col = appData.highlightSquareColor; break;
603 case 2: col = appData.premoveHighlightColor; break;
604 default: col = "#808080"; break; // cannot happen
606 cr = cairo_create(csBoardWindow);
607 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
608 cairo_rectangle(cr, x+odd/2., y+odd/2., squareSize+lineGap, squareSize+lineGap);
609 SetPen(cr, lineGap, col, 0);
612 GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap+odd, squareSize+2*lineGap+odd);
616 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
618 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
619 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
621 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
622 if(textureW[kind] < W*squareSize)
623 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
625 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
626 if(textureH[kind] < H*squareSize)
627 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
629 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
634 DrawLogo (Option *opt, void *logo)
636 cairo_surface_t *img;
640 if(!logo || !opt) return;
641 img = cairo_image_surface_create_from_png (logo);
642 w = cairo_image_surface_get_width (img);
643 h = cairo_image_surface_get_height (img);
644 cr = cairo_create(DRAWABLE(opt));
645 // cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
646 cairo_scale(cr, (float)opt->max/w, (float)opt->value/h);
647 cairo_set_source_surface (cr, img, 0, 0);
650 cairo_surface_destroy (img);
651 GraphExpose(opt, 0, 0, appData.logoSize, appData.logoSize/2);
655 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
656 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
660 cr = cairo_create (dest);
662 if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) {
663 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
664 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
665 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
668 } else { // evenly colored squares
671 case 0: col = appData.darkSquareColor; break;
672 case 1: col = appData.lightSquareColor; break;
673 case 2: col = "#000000"; break;
674 default: col = "#808080"; break; // cannot happen
676 SetPen(cr, 2.0, col, 0);
677 cairo_rectangle (cr, fac*x, fac*y, squareSize, squareSize);
678 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
685 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
690 if ((int)piece < (int) BlackPawn) {
696 if(appData.upsideDown && flipView) kind = 1 - kind; // swap white and black pieces
697 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
698 cr = cairo_create (dest);
699 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
704 static char *markerColor[8] = { "#FFFF00", "#FF0000", "#00FF00", "#0000FF", "#00FFFF", "#FF00FF", "#FFFFFF", "#000000" };
707 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
711 cr = cairo_create(cs);
712 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
713 if(appData.monoMode) {
714 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
715 cairo_stroke_preserve(cr);
716 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
718 SetPen(cr, 2, markerColor[marker-1], 0);
726 DrawDot (int marker, int x, int y, int r)
727 { // used for atomic captures; no need to draw on backup
728 DoDrawDot(csBoardWindow, marker, x, y, r);
729 GraphExpose(currBoard, x-r, y-r, 2*r, 2*r);
733 DrawText (char *string, int x, int y, int align)
736 cairo_text_extents_t te;
739 cr = cairo_create (csBoardWindow);
740 cairo_select_font_face (cr, "Sans",
741 CAIRO_FONT_SLANT_NORMAL,
742 CAIRO_FONT_WEIGHT_BOLD);
744 cairo_set_font_size (cr, align < 0 ? 2*squareSize/3 : squareSize/4);
745 // calculate where it goes
746 cairo_text_extents (cr, string, &te);
749 xx += squareSize - te.width - te.x_bearing - 1;
750 yy += squareSize - te.height - te.y_bearing - 1;
751 } else if (align == 2) {
752 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
753 } else if (align == 3) {
754 xx += squareSize - te.width -te.x_bearing - 1;
755 yy += -te.y_bearing + 3;
756 } else if (align == 4) {
757 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
758 } else if (align < 0) {
759 xx += squareSize/2 - te.width/2, yy += 9*squareSize/16 - te.y_bearing/2;
762 cairo_move_to (cr, xx-1, yy);
763 if(align == -2) cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); else
764 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
765 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
766 cairo_show_text (cr, string);
771 InscribeKanji (ChessSquare piece, int x, int y)
773 char *p, *q, buf[10];
775 if(piece == EmptySquare) return;
776 if(piece >= BlackPawn) piece = BLACK_TO_WHITE piece;
777 p = appData.inscriptions;
779 while(piece > WhitePawn) {
780 if(*p++ == NULLCHAR) {
781 if(n != WhiteKing) return;
786 while((*p & 0xC0) == 0x80) p++; // skip UTF-8 continuation bytes
790 for(q=buf; (*++q & 0xC0) == 0x80;);
792 DrawText(buf, x, y, n > WhiteLion ? -2 : -1);
796 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *tString, char *bString, int align)
797 { // basic front-end board-draw function: takes care of everything that can be in square:
798 // piece, background, coordinate/count, marker dot
800 if (piece == EmptySquare) {
801 BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
803 pngDrawPiece(csBoardWindow, piece, square_color, x, y);
804 if(appData.inscriptions[0]) InscribeKanji(piece, x, y);
807 if(align) { // square carries inscription (coord or piece count)
808 if(align > 1) DrawText(tString, x, y, align); // top (rank or count)
809 if(bString && *bString) DrawText(bString, x, y, 1); // bottom (always lower right file ID)
812 if(marker) { // print fat marker dot, if requested
813 DoDrawDot(csBoardWindow, marker, x + squareSize/4, y+squareSize/4, squareSize/2);
817 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
819 /* Masks for XPM pieces. Black and white pieces can have
820 different shapes, but in the interest of retaining my
821 sanity pieces must have the same outline on both light
822 and dark squares, and all pieces must use the same
823 background square colors/images. */
825 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
828 InitAnimState (AnimNr anr)
830 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
831 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
832 c_animBufs[anr+4] = csBoardWindow;
833 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
834 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
841 InitAnimState(Player);
845 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
847 static cairo_t *pieceSource;
848 pieceSource = cairo_create (dest);
849 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
850 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
851 else cairo_paint(pieceSource);
852 cairo_destroy (pieceSource);
856 InsertPiece (AnimNr anr, ChessSquare piece)
858 CairoOverlayPiece(piece, c_animBufs[anr]);
862 DrawBlank (AnimNr anr, int x, int y, int startColor)
864 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
867 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
868 int srcX, int srcY, int width, int height, int destX, int destY)
871 c_animBufs[anr+4] = csBoardWindow;
872 cr = cairo_create (c_animBufs[anr+destBuf]);
873 cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY);
874 cairo_rectangle (cr, destX, destY, width, height);
877 if(c_animBufs[anr+destBuf] == csBoardWindow) // suspect that GTK needs this!
878 GraphExpose(currBoard, destX, destY, width, height);
882 SetDragPiece (AnimNr anr, ChessSquare piece)
886 /* [AS] Arrow highlighting support */
889 DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr)
893 cr = cairo_create (cs);
894 cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y);
896 cairo_line_to(cr, arrow[i].x, arrow[i].y);
898 if(appData.monoMode) { // should we always outline arrow?
899 cairo_line_to(cr, arrow[0].x, arrow[0].y);
900 SetPen(cr, 2, "#000000", 0);
901 cairo_stroke_preserve(cr);
903 SetPen(cr, 2, appData.highlightSquareColor, 0);
911 DrawPolygon (Pnt arrow[], int nr)
913 DoDrawPolygon(csBoardWindow, arrow, nr);
914 // if(!dual) DoDrawPolygon(csBoardBackup, arrow, nr);
917 //-------------------- Eval Graph drawing routines (formerly in xevalgraph.h) --------------------
920 ChoosePen(cairo_t *cr, int i)
924 SetPen(cr, 1.0, "#000000", 0);
927 SetPen(cr, 1.0, "#A0A0A0", 1);
930 SetPen(cr, 1.0, "#0000FF", 1);
933 SetPen(cr, 3.0, crWhite, 0);
936 SetPen(cr, 3.0, crBlack, 0);
939 SetPen(cr, 3.0, "#E0E0F0", 0);
944 // [HGM] front-end, added as wrapper to avoid use of LineTo and MoveToEx in other routines (so they can be back-end)
946 DrawSegment (int x, int y, int *lastX, int *lastY, int penType)
948 static int curX, curY;
950 if(penType != PEN_NONE) {
951 cairo_t *cr = cairo_create(DRAWABLE(disp));
952 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
953 cairo_move_to (cr, curX, curY);
954 cairo_line_to (cr, x,y);
955 ChoosePen(cr, penType);
960 if(lastX != NULL) { *lastX = curX; *lastY = curY; }
964 // front-end wrapper for drawing functions to do rectangles
966 DrawRectangle (int left, int top, int right, int bottom, int side, int style)
970 cr = cairo_create (DRAWABLE(disp));
971 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
972 cairo_rectangle (cr, left, top, right-left, bottom-top);
975 case 0: ChoosePen(cr, PEN_BOLDWHITE); break;
976 case 1: ChoosePen(cr, PEN_BOLDBLACK); break;
977 case 2: ChoosePen(cr, PEN_BACKGD); break;
983 cairo_rectangle (cr, left, top, right-left-1, bottom-top-1);
984 ChoosePen(cr, PEN_BLACK);
991 // front-end wrapper for putting text in graph
993 DrawEvalText (char *buf, int cbBuf, int y)
995 // the magic constants 8 and 5 should really be derived from the font size somehow
996 cairo_text_extents_t extents;
997 cairo_t *cr = cairo_create(DRAWABLE(disp));
999 /* GTK-TODO this has to go into the font-selection */
1000 cairo_select_font_face (cr, "Sans",
1001 CAIRO_FONT_SLANT_NORMAL,
1002 CAIRO_FONT_WEIGHT_NORMAL);
1003 cairo_set_font_size (cr, 12.0);
1006 cairo_text_extents (cr, buf, &extents);
1008 cairo_move_to (cr, MarginX - 2 - 8*cbBuf, y+5);
1009 cairo_text_path (cr, buf);
1010 cairo_set_source_rgb (cr, 0.0, 0.0, 0);
1011 cairo_fill_preserve (cr);
1012 cairo_set_source_rgb (cr, 0, 1.0, 0);
1013 cairo_set_line_width (cr, 0.1);