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];
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 *crWhite = "#FFFFB0";
121 char *crBlack = "#AD5D3D";
125 } gridSegments[BOARD_RANKS + BOARD_FILES + 2];
128 SwitchWindow (int main)
130 currBoard = (main ? &mainOptions[W_BOARD] : &dualOptions[3]);
131 csBoardWindow = DRAWABLE(currBoard);
135 SelectPieces(VariantClass v)
140 for(p=0; p<=(int)WhiteKing; p++)
141 pngPieceBitmaps[i][p] = pngPieceBitmaps2[i][p]; // defaults
142 if(v == VariantShogi) {
143 pngPieceBitmaps[i][(int)WhiteCannon] = pngPieceBitmaps2[i][(int)WhiteTokin];
144 pngPieceBitmaps[i][(int)WhiteNightrider] = pngPieceBitmaps2[i][(int)WhiteKing+2];
145 pngPieceBitmaps[i][(int)WhiteGrasshopper] = pngPieceBitmaps2[i][(int)WhiteKing+3];
146 pngPieceBitmaps[i][(int)WhiteSilver] = pngPieceBitmaps2[i][(int)WhiteKing+4];
147 pngPieceBitmaps[i][(int)WhiteQueen] = pngPieceBitmaps2[i][(int)WhiteLance];
148 pngPieceBitmaps[i][(int)WhiteFalcon] = pngPieceBitmaps2[i][(int)WhiteMonarch]; // for Sho Shogi
151 if(v == VariantGothic) {
152 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteSilver];
155 if(v == VariantSChess) {
156 pngPieceBitmaps[i][(int)WhiteAngel] = pngPieceBitmaps2[i][(int)WhiteFalcon];
157 pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteAlfil];
159 if(v == VariantChuChess) {
160 pngPieceBitmaps[i][(int)WhiteNightrider] = pngPieceBitmaps2[i][(int)WhiteLion];
162 if(v == VariantChu) {
163 pngPieceBitmaps[i][(int)WhiteNightrider] = pngPieceBitmaps2[i][(int)WhiteKing+1];
164 pngPieceBitmaps[i][(int)WhiteUnicorn] = pngPieceBitmaps2[i][(int)WhiteCat];
165 pngPieceBitmaps[i][(int)WhiteSilver] = pngPieceBitmaps2[i][(int)WhiteSword];
166 pngPieceBitmaps[i][(int)WhiteFalcon] = pngPieceBitmaps2[i][(int)WhiteDagger];
171 #define BoardSize int
173 InitDrawingSizes (BoardSize boardSize, int flags)
174 { // [HGM] resize is functional now, but for board format changes only (nr of ranks, files)
175 int boardWidth, boardHeight;
176 static int oldWidth, oldHeight;
177 static VariantClass oldVariant;
178 static int oldTwoBoards = 0, oldNrOfFiles = 0;
180 if(!mainOptions[W_BOARD].handle) return;
182 if(boardSize == -2 && gameInfo.variant != oldVariant
183 && oldNrOfFiles && oldNrOfFiles != BOARD_WIDTH) { // called because variant switch changed board format
184 squareSize = ((squareSize + lineGap) * oldNrOfFiles + 0.5*BOARD_WIDTH) / BOARD_WIDTH; // keep total width fixed
185 if(appData.overrideLineGap < 0) lineGap = squareSize < 37 ? 1 : squareSize < 59 ? 2 : squareSize < 116 ? 3 : 4;
186 squareSize -= lineGap;
190 oldNrOfFiles = BOARD_WIDTH;
192 if(oldTwoBoards && !twoBoards) PopDown(DummyDlg);
193 oldTwoBoards = twoBoards;
195 if(appData.overrideLineGap >= 0) lineGap = appData.overrideLineGap;
196 boardWidth = lineGap + BOARD_WIDTH * (squareSize + lineGap);
197 boardHeight = lineGap + BOARD_HEIGHT * (squareSize + lineGap);
199 if(boardWidth != oldWidth || boardHeight != oldHeight) { // do resizing stuff only if size actually changed
201 oldWidth = boardWidth; oldHeight = boardHeight;
205 * Inhibit shell resizing.
207 ResizeBoardWindow(boardWidth, boardHeight, 0);
212 // [HGM] pieces: tailor piece bitmaps to needs of specific variant
215 if(gameInfo.variant != oldVariant) { // and only if variant changed
217 SelectPieces(gameInfo.variant);
219 oldVariant = gameInfo.variant;
225 ExposeRedraw (Option *graph, int x, int y, int w, int h)
226 { // copy a selected part of the buffer bitmap to the display
227 cairo_t *cr = cairo_create((cairo_surface_t *) graph->textValue);
228 cairo_set_source_surface(cr, (cairo_surface_t *) graph->choice, 0, 0);
229 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
230 cairo_rectangle(cr, x, y, w, h);
236 CreatePNGBoard (char *s, int kind)
238 if(!appData.useBitmaps || s == NULL || *s == 0 || *s == '*') { useTexture &= ~(kind+1); return; }
239 if(strstr(s, ".png")) {
240 cairo_surface_t *img = cairo_image_surface_create_from_png (s);
242 useTexture |= kind + 1; pngBoardBitmap[kind] = img;
243 textureW[kind] = cairo_image_surface_get_width (img);
244 textureH[kind] = cairo_image_surface_get_height (img);
249 char *pngPieceNames[] = // must be in same order as internal piece encoding
250 { "Pawn", "Knight", "Bishop", "Rook", "Queen", "Advisor", "Elephant", "Archbishop", "Marshall", "Gold", "Commoner",
251 "Canon", "Nightrider", "CrownedBishop", "CrownedRook", "Princess", "Chancellor", "Hawk", "Lance", "Cobra", "Unicorn", "Lion",
252 "GoldPawn", "HSword", "PromoHorse", "PromoDragon", "Leopard", "PromoSword", "Prince", "Phoenix", "Kylin", "PromoRook", "PromoHSword",
253 "Dolphin", "Chancellor", "Unicorn", "Hawk", "Sword", "Princess", "HCrown", "Knight", "Elephant", "PromoBishop", "King",
254 "Claw", "GoldKnight", "GoldLance", "GoldSilver", NULL
257 char *backupPiece[] = { "King", "Queen", "Lion" }; // pieces that map on other when not kanji
260 LoadSVG (char *dir, int color, int piece, int retry)
263 RsvgHandle *svg=svgPieces[color][piece];
264 RsvgDimensionData svg_dimensions;
265 GError *svgerror=NULL;
266 cairo_surface_t *img;
269 snprintf(buf, MSG_SIZ, "%s/%s%s.svg", dir, color ? "Black" : "White",
270 retry ? backupPiece[piece - WhiteMonarch] : pngPieceNames[piece]);
272 if(svg || *dir && (svg = rsvg_handle_new_from_file(buf, &svgerror))) {
274 rsvg_handle_get_dimensions(svg, &svg_dimensions);
275 img = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, squareSize, squareSize);
277 cr = cairo_create(img);
278 cairo_scale(cr, squareSize/(double) svg_dimensions.width, squareSize/(double) svg_dimensions.height);
279 rsvg_handle_render_cairo(svg, cr);
280 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
281 if(pngPieceImages[color][piece]) cairo_surface_destroy(pngPieceImages[color][piece]);
282 pngPieceImages[color][piece] = img;
288 if(!retry && piece >= WhiteMonarch && piece <= WhiteNothing) // pieces that are only different in kanji sets
289 return LoadSVG(dir, color, piece, 1);
291 g_error_free(svgerror);
296 ScaleOnePiece (int color, int piece)
300 cairo_surface_t *img, *cs;
305 svgPieces[color][piece] = LoadSVG("", color, piece, 0); // this fills pngPieceImages if we had cached svg with bitmap of wanted size
307 if(!pngPieceImages[color][piece]) { // we don't have cached bitmap (implying we did not have cached svg)
308 if(*appData.pieceDirectory) { // user specified piece directory
309 snprintf(buf, MSG_SIZ, "%s/%s%s.png", appData.pieceDirectory, color ? "Black" : "White", pngPieceNames[piece]);
310 img = cairo_image_surface_create_from_png (buf); // try if there are png pieces there
311 if(cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) { // there were not
312 svgPieces[color][piece] = LoadSVG(appData.pieceDirectory, color, piece, 0); // so try if he has svg there
313 } else pngPieceImages[color][piece] = img;
317 if(!pngPieceImages[color][piece]) { // we still did not manage to acquire a piece bitmap
318 static int warned = 0;
319 if(!(svgPieces[color][piece] = LoadSVG(SVGDIR, color, piece, 0)) && !warned) { // try to fall back on installed svg
320 char *msg = _("No default pieces installed!\nSelect your own using '-pieceImageDirectory'.");
321 printf("%s\n", msg); // give up
322 DisplayError(msg, 0);
323 warned = 1; // prevent error message being repeated for each piece type
327 img = pngPieceImages[color][piece];
329 // create new bitmap to hold scaled piece image (and remove any old)
330 if(pngPieceBitmaps2[color][piece]) cairo_surface_destroy (pngPieceBitmaps2[color][piece]);
331 pngPieceBitmaps2[color][piece] = cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
335 // scaled copying of the raw png image
336 cr = cairo_create(cs);
337 w = cairo_image_surface_get_width (img);
338 h = cairo_image_surface_get_height (img);
339 cairo_scale(cr, squareSize/w, squareSize/h);
340 cairo_set_source_surface (cr, img, 0, 0);
344 if(!appData.trueColors || !*appData.pieceDirectory) { // operate on bitmap to color it (king-size hack...)
345 int stride = cairo_image_surface_get_stride(cs)/4;
346 int *buf = (int *) cairo_image_surface_get_data(cs);
348 sscanf(color ? appData.blackPieceColor+1 : appData.whitePieceColor+1, "%x", &p); // replacement color
349 cairo_surface_flush(cs);
350 for(i=0; i<squareSize; i++) for(j=0; j<squareSize; j++) {
353 unsigned int c = buf[i*stride + j];
354 a = c >> 24; r = c >> 16 & 255; // alpha and red, where red is the 'white' weight, since white is #FFFFCC in the source images
355 f = (color ? a - r : r)/255.; // fraction of black or white in the mix that has to be replaced
356 buf[i*stride + j] = c & 0xFF000000; // alpha channel is kept at same opacity
357 buf[i*stride + j] += ((int)(f*(p&0xFF0000)) & 0xFF0000) + ((int)(f*(p&0xFF00)) & 0xFF00) + (int)(f*(p&0xFF)); // add desired fraction of new color
358 if(color) buf[i*stride + j] += r | r << 8 | r << 16; // details on black pieces get their weight added in pure white
359 if(appData.monoMode) {
360 if(a < 64) buf[i*stride + j] = 0; // if not opaque enough, totally transparent
361 else if(2*r < a) buf[i*stride + j] = 0xFF000000; // if not light enough, totally black
362 else buf[i*stride + j] = 0xFFFFFFFF; // otherwise white
365 cairo_surface_mark_dirty(cs);
374 for(p=0; pngPieceNames[p]; p++) {
378 SelectPieces(gameInfo.variant);
383 { // [HGM] taken out of main
385 CreatePNGBoard(appData.liteBackTextureFile, 1);
386 CreatePNGBoard(appData.darkBackTextureFile, 0);
390 InitDrawingParams (int reloadPieces)
394 for(i=0; i<2; i++) for(p=0; p<BlackPawn+4; p++) {
395 if(pngPieceImages[i][p]) cairo_surface_destroy(pngPieceImages[i][p]);
396 pngPieceImages[i][p] = NULL;
397 if(svgPieces[i][p]) rsvg_handle_close(svgPieces[i][p], NULL);
398 svgPieces[i][p] = NULL;
403 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
406 Color (char *col, int n)
409 sscanf(col, "#%x", &c);
415 SetPen (cairo_t *cr, float w, char *col, int dash)
417 static const double dotted[] = {4.0, 4.0};
418 static int len = sizeof(dotted) / sizeof(dotted[0]);
419 cairo_set_line_width (cr, w);
420 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
421 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
424 void DrawSeekAxis( int x, int y, int xTo, int yTo )
429 cr = cairo_create (csBoardWindow);
431 cairo_move_to (cr, x, y);
432 cairo_line_to(cr, xTo, yTo );
434 SetPen(cr, 2, "#000000", 0);
439 GraphExpose(currBoard, x-1, yTo-1, xTo-x+2, y-yTo+2);
442 void DrawSeekBackground( int left, int top, int right, int bottom )
444 cairo_t *cr = cairo_create (csBoardWindow);
446 cairo_rectangle (cr, left, top, right-left, bottom-top);
448 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
453 GraphExpose(currBoard, left, top, right-left, bottom-top);
456 void DrawSeekText(char *buf, int x, int y)
458 cairo_t *cr = cairo_create (csBoardWindow);
460 cairo_select_font_face (cr, "Sans",
461 CAIRO_FONT_SLANT_NORMAL,
462 CAIRO_FONT_WEIGHT_NORMAL);
464 cairo_set_font_size (cr, 12.0);
466 cairo_move_to (cr, x, y+4);
467 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
468 cairo_show_text( cr, buf);
472 GraphExpose(currBoard, x-5, y-10, 60, 15);
475 void DrawSeekDot(int x, int y, int colorNr)
477 cairo_t *cr = cairo_create (csBoardWindow);
478 int square = colorNr & 0x80;
482 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
484 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
486 SetPen(cr, 2, "#000000", 0);
487 cairo_stroke_preserve(cr);
489 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
490 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
491 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
497 GraphExpose(currBoard, x-squareSize/8, y-squareSize/8, 2*(squareSize/8), 2*(squareSize/8));
501 InitDrawingHandle (Option *opt)
503 csBoardWindow = DRAWABLE(opt);
511 if (lineGap == 0) return;
513 /* [HR] Split this into 2 loops for non-square boards. */
515 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
516 gridSegments[i].x1 = 0;
518 lineGap + BOARD_WIDTH * (squareSize + lineGap);
519 gridSegments[i].y1 = gridSegments[i].y2
520 = lineGap / 2 + (i * (squareSize + lineGap));
523 for (j = 0; j < BOARD_WIDTH + 1; j++) {
524 gridSegments[j + i].y1 = 0;
525 gridSegments[j + i].y2 =
526 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
527 gridSegments[j + i].x1 = gridSegments[j + i].x2
528 = lineGap / 2 + (j * (squareSize + lineGap));
535 /* draws a grid starting around Nx, Ny squares starting at x,y */
537 float odd = (lineGap & 1)/2.;
541 cr = cairo_create (csBoardWindow);
543 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
544 SetPen(cr, lineGap, "#000000", 0);
547 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
549 int h = (gridSegments[i].y1 == gridSegments[i].y2); // horizontal
550 cairo_move_to (cr, gridSegments[i].x1 + !h*odd, gridSegments[i].y1 + h*odd);
551 cairo_line_to (cr, gridSegments[i].x2 + !h*odd, gridSegments[i].y2 + h*odd);
562 DrawBorder (int x, int y, int type, int odd)
568 case 0: col = "#000000"; break;
569 case 1: col = appData.highlightSquareColor; break;
570 case 2: col = appData.premoveHighlightColor; break;
571 default: col = "#808080"; break; // cannot happen
573 cr = cairo_create(csBoardWindow);
574 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
575 cairo_rectangle(cr, x+odd/2., y+odd/2., squareSize+lineGap, squareSize+lineGap);
576 SetPen(cr, lineGap, col, 0);
579 GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap+odd, squareSize+2*lineGap+odd);
583 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
585 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
586 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
588 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
589 if(textureW[kind] < W*squareSize)
590 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
592 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
593 if(textureH[kind] < H*squareSize)
594 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
596 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
601 DrawLogo (Option *opt, void *logo)
603 cairo_surface_t *img;
607 if(!logo || !opt) return;
608 img = cairo_image_surface_create_from_png (logo);
609 w = cairo_image_surface_get_width (img);
610 h = cairo_image_surface_get_height (img);
611 cr = cairo_create(DRAWABLE(opt));
612 // cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
613 cairo_scale(cr, (float)opt->max/w, (float)opt->value/h);
614 cairo_set_source_surface (cr, img, 0, 0);
617 cairo_surface_destroy (img);
618 GraphExpose(opt, 0, 0, appData.logoSize, appData.logoSize/2);
622 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
623 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
627 cr = cairo_create (dest);
629 if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) {
630 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
631 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
632 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
635 } else { // evenly colored squares
638 case 0: col = appData.darkSquareColor; break;
639 case 1: col = appData.lightSquareColor; break;
640 case 2: col = "#000000"; break;
641 default: col = "#808080"; break; // cannot happen
643 SetPen(cr, 2.0, col, 0);
644 cairo_rectangle (cr, fac*x, fac*y, squareSize, squareSize);
645 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
652 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
657 if ((int)piece < (int) BlackPawn) {
663 if(appData.upsideDown && flipView) kind = 1 - kind; // swap white and black pieces
664 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
665 cr = cairo_create (dest);
666 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
671 static char *markerColor[8] = { "#FFFF00", "#FF0000", "#00FF00", "#0000FF", "#00FFFF", "#FF00FF", "#FFFFFF", "#000000" };
674 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
678 cr = cairo_create(cs);
679 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
680 if(appData.monoMode) {
681 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
682 cairo_stroke_preserve(cr);
683 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
685 SetPen(cr, 2, markerColor[marker-1], 0);
693 DrawDot (int marker, int x, int y, int r)
694 { // used for atomic captures; no need to draw on backup
695 DoDrawDot(csBoardWindow, marker, x, y, r);
696 GraphExpose(currBoard, x-r, y-r, 2*r, 2*r);
700 DrawText (char *string, int x, int y, int align)
703 cairo_text_extents_t te;
706 cr = cairo_create (csBoardWindow);
707 cairo_select_font_face (cr, "Sans",
708 CAIRO_FONT_SLANT_NORMAL,
709 CAIRO_FONT_WEIGHT_BOLD);
711 cairo_set_font_size (cr, align < 0 ? 2*squareSize/3 : squareSize/4);
712 // calculate where it goes
713 cairo_text_extents (cr, string, &te);
716 xx += squareSize - te.width - te.x_bearing - 1;
717 yy += squareSize - te.height - te.y_bearing - 1;
718 } else if (align == 2) {
719 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
720 } else if (align == 3) {
721 xx += squareSize - te.width -te.x_bearing - 1;
722 yy += -te.y_bearing + 3;
723 } else if (align == 4) {
724 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
725 } else if (align < 0) {
726 xx += squareSize/2 - te.width/2, yy += 9*squareSize/16 - te.y_bearing/2;
729 cairo_move_to (cr, xx-1, yy);
730 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
731 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
732 cairo_show_text (cr, string);
737 InscribeKanji (ChessSquare piece, int x, int y)
739 char *p, *q, buf[10];
741 if(piece == EmptySquare) return;
742 if(piece >= BlackPawn) piece = BLACK_TO_WHITE piece;
743 p = appData.inscriptions;
745 while(piece > WhitePawn) {
746 if(*p++ == NULLCHAR) {
747 if(n != WhiteKing) return;
752 while((*p & 0xC0) == 0x80) p++; // skip UTF-8 continuation bytes
756 for(q=buf; (*++q & 0xC0) == 0x80;);
758 DrawText(buf, x, y, -1);
762 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *tString, char *bString, int align)
763 { // basic front-end board-draw function: takes care of everything that can be in square:
764 // piece, background, coordinate/count, marker dot
766 if (piece == EmptySquare) {
767 BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
769 pngDrawPiece(csBoardWindow, piece, square_color, x, y);
770 InscribeKanji(piece, x, y);
773 if(align) { // square carries inscription (coord or piece count)
774 if(align > 1) DrawText(tString, x, y, align); // top (rank or count)
775 if(bString && *bString) DrawText(bString, x, y, 1); // bottom (always lower right file ID)
778 if(marker) { // print fat marker dot, if requested
779 DoDrawDot(csBoardWindow, marker, x + squareSize/4, y+squareSize/4, squareSize/2);
783 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
785 /* Masks for XPM pieces. Black and white pieces can have
786 different shapes, but in the interest of retaining my
787 sanity pieces must have the same outline on both light
788 and dark squares, and all pieces must use the same
789 background square colors/images. */
791 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
794 InitAnimState (AnimNr anr)
796 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
797 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
798 c_animBufs[anr+4] = csBoardWindow;
799 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
800 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
807 InitAnimState(Player);
811 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
813 static cairo_t *pieceSource;
814 pieceSource = cairo_create (dest);
815 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
816 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
817 else cairo_paint(pieceSource);
818 cairo_destroy (pieceSource);
822 InsertPiece (AnimNr anr, ChessSquare piece)
824 CairoOverlayPiece(piece, c_animBufs[anr]);
828 DrawBlank (AnimNr anr, int x, int y, int startColor)
830 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
833 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
834 int srcX, int srcY, int width, int height, int destX, int destY)
837 c_animBufs[anr+4] = csBoardWindow;
838 cr = cairo_create (c_animBufs[anr+destBuf]);
839 cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY);
840 cairo_rectangle (cr, destX, destY, width, height);
843 if(c_animBufs[anr+destBuf] == csBoardWindow) // suspect that GTK needs this!
844 GraphExpose(currBoard, destX, destY, width, height);
848 SetDragPiece (AnimNr anr, ChessSquare piece)
852 /* [AS] Arrow highlighting support */
855 DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr)
859 cr = cairo_create (cs);
860 cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y);
862 cairo_line_to(cr, arrow[i].x, arrow[i].y);
864 if(appData.monoMode) { // should we always outline arrow?
865 cairo_line_to(cr, arrow[0].x, arrow[0].y);
866 SetPen(cr, 2, "#000000", 0);
867 cairo_stroke_preserve(cr);
869 SetPen(cr, 2, appData.highlightSquareColor, 0);
877 DrawPolygon (Pnt arrow[], int nr)
879 DoDrawPolygon(csBoardWindow, arrow, nr);
880 // if(!dual) DoDrawPolygon(csBoardBackup, arrow, nr);
883 //-------------------- Eval Graph drawing routines (formerly in xevalgraph.h) --------------------
886 ChoosePen(cairo_t *cr, int i)
890 SetPen(cr, 1.0, "#000000", 0);
893 SetPen(cr, 1.0, "#A0A0A0", 1);
896 SetPen(cr, 1.0, "#0000FF", 1);
899 SetPen(cr, 3.0, crWhite, 0);
902 SetPen(cr, 3.0, crBlack, 0);
905 SetPen(cr, 3.0, "#E0E0F0", 0);
910 // [HGM] front-end, added as wrapper to avoid use of LineTo and MoveToEx in other routines (so they can be back-end)
912 DrawSegment (int x, int y, int *lastX, int *lastY, int penType)
914 static int curX, curY;
916 if(penType != PEN_NONE) {
917 cairo_t *cr = cairo_create(DRAWABLE(disp));
918 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
919 cairo_move_to (cr, curX, curY);
920 cairo_line_to (cr, x,y);
921 ChoosePen(cr, penType);
926 if(lastX != NULL) { *lastX = curX; *lastY = curY; }
930 // front-end wrapper for drawing functions to do rectangles
932 DrawRectangle (int left, int top, int right, int bottom, int side, int style)
936 cr = cairo_create (DRAWABLE(disp));
937 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
938 cairo_rectangle (cr, left, top, right-left, bottom-top);
941 case 0: ChoosePen(cr, PEN_BOLDWHITE); break;
942 case 1: ChoosePen(cr, PEN_BOLDBLACK); break;
943 case 2: ChoosePen(cr, PEN_BACKGD); break;
949 cairo_rectangle (cr, left, top, right-left-1, bottom-top-1);
950 ChoosePen(cr, PEN_BLACK);
957 // front-end wrapper for putting text in graph
959 DrawEvalText (char *buf, int cbBuf, int y)
961 // the magic constants 8 and 5 should really be derived from the font size somehow
962 cairo_text_extents_t extents;
963 cairo_t *cr = cairo_create(DRAWABLE(disp));
965 /* GTK-TODO this has to go into the font-selection */
966 cairo_select_font_face (cr, "Sans",
967 CAIRO_FONT_SLANT_NORMAL,
968 CAIRO_FONT_WEIGHT_NORMAL);
969 cairo_set_font_size (cr, 12.0);
972 cairo_text_extents (cr, buf, &extents);
974 cairo_move_to (cr, MarginX - 2 - 8*cbBuf, y+5);
975 cairo_text_path (cr, buf);
976 cairo_set_source_rgb (cr, 0.0, 0.0, 0);
977 cairo_fill_preserve (cr);
978 cairo_set_source_rgb (cr, 0, 1.0, 0);
979 cairo_set_line_width (cr, 0.1);