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 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) {
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;
207 * Inhibit shell resizing.
209 ResizeBoardWindow(boardWidth, boardHeight, 0);
214 // [HGM] pieces: tailor piece bitmaps to needs of specific variant
217 if(gameInfo.variant != oldVariant) { // and only if variant changed
219 SelectPieces(gameInfo.variant);
221 oldVariant = gameInfo.variant;
227 ExposeRedraw (Option *graph, int x, int y, int w, int h)
228 { // copy a selected part of the buffer bitmap to the display
229 cairo_t *cr = cairo_create((cairo_surface_t *) graph->textValue);
230 cairo_set_source_surface(cr, (cairo_surface_t *) graph->choice, 0, 0);
231 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
232 cairo_rectangle(cr, x, y, w, h);
238 CreatePNGBoard (char *s, int kind)
240 if(!appData.useBitmaps || s == NULL || *s == 0 || *s == '*') { useTexture &= ~(kind+1); return; }
241 if(strstr(s, ".png")) {
242 cairo_surface_t *img = cairo_image_surface_create_from_png (s);
244 useTexture |= kind + 1; pngBoardBitmap[kind] = img;
245 textureW[kind] = cairo_image_surface_get_width (img);
246 textureH[kind] = cairo_image_surface_get_height (img);
251 char *pngPieceNames[] = // must be in same order as internal piece encoding
252 { "Pawn", "Knight", "Bishop", "Rook", "Queen", "Advisor", "Elephant", "Archbishop", "Marshall", "Gold", "Commoner",
253 "Canon", "Nightrider", "CrownedBishop", "CrownedRook", "Princess", "Chancellor", "Hawk", "Lance", "Cobra", "Unicorn", "Lion",
254 "GoldPawn", "HSword", "PromoHorse", "PromoDragon", "Leopard", "PromoSword", "Prince", "Phoenix", "Kylin", "PromoRook", "PromoHSword",
255 "Dolphin", "Chancellor", "Unicorn", "Hawk", "Sword", "Princess", "HCrown", "Knight", "Elephant", "PromoBishop", "King",
256 "Claw", "GoldKnight", "GoldLance", "GoldSilver", NULL
259 char *backupPiece[] = { "King", "Queen", "Lion" }; // pieces that map on other when not kanji
262 LoadSVG (char *dir, int color, int piece, int retry)
265 RsvgHandle *svg=svgPieces[color][piece];
266 RsvgDimensionData svg_dimensions;
267 GError *svgerror=NULL;
268 cairo_surface_t *img;
271 snprintf(buf, MSG_SIZ, "%s/%s%s.svg", dir, color ? "Black" : "White",
272 retry ? backupPiece[piece - WhiteMonarch] : pngPieceNames[piece]);
274 if(svg || *dir && (svg = rsvg_handle_new_from_file(buf, &svgerror))) {
276 rsvg_handle_get_dimensions(svg, &svg_dimensions);
277 img = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, squareSize, squareSize);
279 cr = cairo_create(img);
280 cairo_scale(cr, squareSize/(double) svg_dimensions.width, squareSize/(double) svg_dimensions.height);
281 rsvg_handle_render_cairo(svg, cr);
282 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
283 if(pngPieceImages[color][piece]) cairo_surface_destroy(pngPieceImages[color][piece]);
284 pngPieceImages[color][piece] = img;
290 if(!retry && piece >= WhiteMonarch && piece <= WhiteNothing) // pieces that are only different in kanji sets
291 return LoadSVG(dir, color, piece, 1);
293 g_error_free(svgerror);
298 ScaleOnePiece (int color, int piece)
302 cairo_surface_t *img, *cs;
307 svgPieces[color][piece] = LoadSVG("", color, piece, 0); // this fills pngPieceImages if we had cached svg with bitmap of wanted size
309 if(!pngPieceImages[color][piece]) { // we don't have cached bitmap (implying we did not have cached svg)
310 if(*appData.pieceDirectory) { // user specified piece directory
311 snprintf(buf, MSG_SIZ, "%s/%s%s.png", appData.pieceDirectory, color ? "Black" : "White", pngPieceNames[piece]);
312 img = cairo_image_surface_create_from_png (buf); // try if there are png pieces there
313 if(cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) { // there were not
314 svgPieces[color][piece] = LoadSVG(appData.pieceDirectory, color, piece, 0); // so try if he has svg there
315 } else pngPieceImages[color][piece] = img;
319 if(!pngPieceImages[color][piece]) { // we still did not manage to acquire a piece bitmap
320 static int warned = 0;
321 if(!(svgPieces[color][piece] = LoadSVG(svgDir, color, piece, 0)) && !warned) { // try to fall back on installed svg
322 char *msg = _("No default pieces installed!\nSelect your own using '-pieceImageDirectory'.");
323 printf("%s\n", msg); // give up
324 DisplayError(msg, 0);
325 warned = 1; // prevent error message being repeated for each piece type
329 img = pngPieceImages[color][piece];
331 // create new bitmap to hold scaled piece image (and remove any old)
332 if(pngPieceBitmaps2[color][piece]) cairo_surface_destroy (pngPieceBitmaps2[color][piece]);
333 pngPieceBitmaps2[color][piece] = cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
337 // scaled copying of the raw png image
338 cr = cairo_create(cs);
339 w = cairo_image_surface_get_width (img);
340 h = cairo_image_surface_get_height (img);
341 cairo_scale(cr, squareSize/w, squareSize/h);
342 cairo_set_source_surface (cr, img, 0, 0);
346 if(!appData.trueColors || !*appData.pieceDirectory) { // operate on bitmap to color it (king-size hack...)
347 int stride = cairo_image_surface_get_stride(cs)/4;
348 int *buf = (int *) cairo_image_surface_get_data(cs);
350 sscanf(color ? appData.blackPieceColor+1 : appData.whitePieceColor+1, "%x", &p); // replacement color
351 cairo_surface_flush(cs);
352 for(i=0; i<squareSize; i++) for(j=0; j<squareSize; j++) {
355 unsigned int c = buf[i*stride + j];
356 a = c >> 24; r = c >> 16 & 255; // alpha and red, where red is the 'white' weight, since white is #FFFFCC in the source images
357 f = (color ? a - r : r)/255.; // fraction of black or white in the mix that has to be replaced
358 buf[i*stride + j] = c & 0xFF000000; // alpha channel is kept at same opacity
359 buf[i*stride + j] += ((int)(f*(p&0xFF0000)) & 0xFF0000) + ((int)(f*(p&0xFF00)) & 0xFF00) + (int)(f*(p&0xFF)); // add desired fraction of new color
360 if(color) buf[i*stride + j] += r | r << 8 | r << 16; // details on black pieces get their weight added in pure white
361 if(appData.monoMode) {
362 if(a < 64) buf[i*stride + j] = 0; // if not opaque enough, totally transparent
363 else if(2*r < a) buf[i*stride + j] = 0xFF000000; // if not light enough, totally black
364 else buf[i*stride + j] = 0xFFFFFFFF; // otherwise white
367 cairo_surface_mark_dirty(cs);
376 for(p=0; pngPieceNames[p]; p++) {
380 SelectPieces(gameInfo.variant);
385 { // [HGM] taken out of main
387 CreatePNGBoard(appData.liteBackTextureFile, 1);
388 CreatePNGBoard(appData.darkBackTextureFile, 0);
392 InitDrawingParams (int reloadPieces)
396 for(i=0; i<2; i++) for(p=0; p<BlackPawn+4; p++) {
397 if(pngPieceImages[i][p]) cairo_surface_destroy(pngPieceImages[i][p]);
398 pngPieceImages[i][p] = NULL;
399 if(svgPieces[i][p]) rsvg_handle_close(svgPieces[i][p], NULL);
400 svgPieces[i][p] = NULL;
405 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
408 Color (char *col, int n)
411 sscanf(col, "#%x", &c);
417 SetPen (cairo_t *cr, float w, char *col, int dash)
419 static const double dotted[] = {4.0, 4.0};
420 static int len = sizeof(dotted) / sizeof(dotted[0]);
421 cairo_set_line_width (cr, w);
422 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
423 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
426 void DrawSeekAxis( int x, int y, int xTo, int yTo )
431 cr = cairo_create (csBoardWindow);
433 cairo_move_to (cr, x, y);
434 cairo_line_to(cr, xTo, yTo );
436 SetPen(cr, 2, "#000000", 0);
441 GraphExpose(currBoard, x-1, yTo-1, xTo-x+2, y-yTo+2);
444 void DrawSeekBackground( int left, int top, int right, int bottom )
446 cairo_t *cr = cairo_create (csBoardWindow);
448 cairo_rectangle (cr, left, top, right-left, bottom-top);
450 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
455 GraphExpose(currBoard, left, top, right-left, bottom-top);
458 void DrawSeekText(char *buf, int x, int y)
460 cairo_t *cr = cairo_create (csBoardWindow);
462 cairo_select_font_face (cr, "Sans",
463 CAIRO_FONT_SLANT_NORMAL,
464 CAIRO_FONT_WEIGHT_NORMAL);
466 cairo_set_font_size (cr, 12.0);
468 cairo_move_to (cr, x, y+4);
469 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
470 cairo_show_text( cr, buf);
474 GraphExpose(currBoard, x-5, y-10, 60, 15);
477 void DrawSeekDot(int x, int y, int colorNr)
479 cairo_t *cr = cairo_create (csBoardWindow);
480 int square = colorNr & 0x80;
484 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
486 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
488 SetPen(cr, 2, "#000000", 0);
489 cairo_stroke_preserve(cr);
491 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
492 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
493 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
499 GraphExpose(currBoard, x-squareSize/8, y-squareSize/8, 2*(squareSize/8), 2*(squareSize/8));
503 InitDrawingHandle (Option *opt)
505 csBoardWindow = DRAWABLE(opt);
513 if (lineGap == 0) return;
515 /* [HR] Split this into 2 loops for non-square boards. */
517 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
518 gridSegments[i].x1 = 0;
520 lineGap + BOARD_WIDTH * (squareSize + lineGap);
521 gridSegments[i].y1 = gridSegments[i].y2
522 = lineGap / 2 + (i * (squareSize + lineGap));
525 for (j = 0; j < BOARD_WIDTH + 1; j++) {
526 gridSegments[j + i].y1 = 0;
527 gridSegments[j + i].y2 =
528 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
529 gridSegments[j + i].x1 = gridSegments[j + i].x2
530 = lineGap / 2 + (j * (squareSize + lineGap));
537 /* draws a grid starting around Nx, Ny squares starting at x,y */
539 float odd = (lineGap & 1)/2.;
543 cr = cairo_create (csBoardWindow);
545 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
546 SetPen(cr, lineGap, "#000000", 0);
549 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
551 int h = (gridSegments[i].y1 == gridSegments[i].y2); // horizontal
552 cairo_move_to (cr, gridSegments[i].x1 + !h*odd, gridSegments[i].y1 + h*odd);
553 cairo_line_to (cr, gridSegments[i].x2 + !h*odd, gridSegments[i].y2 + h*odd);
564 DrawBorder (int x, int y, int type, int odd)
570 case 0: col = "#000000"; break;
571 case 1: col = appData.highlightSquareColor; break;
572 case 2: col = appData.premoveHighlightColor; break;
573 default: col = "#808080"; break; // cannot happen
575 cr = cairo_create(csBoardWindow);
576 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
577 cairo_rectangle(cr, x+odd/2., y+odd/2., squareSize+lineGap, squareSize+lineGap);
578 SetPen(cr, lineGap, col, 0);
581 GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap+odd, squareSize+2*lineGap+odd);
585 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
587 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
588 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
590 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
591 if(textureW[kind] < W*squareSize)
592 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
594 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
595 if(textureH[kind] < H*squareSize)
596 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
598 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
603 DrawLogo (Option *opt, void *logo)
605 cairo_surface_t *img;
609 if(!logo || !opt) return;
610 img = cairo_image_surface_create_from_png (logo);
611 w = cairo_image_surface_get_width (img);
612 h = cairo_image_surface_get_height (img);
613 cr = cairo_create(DRAWABLE(opt));
614 // cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
615 cairo_scale(cr, (float)opt->max/w, (float)opt->value/h);
616 cairo_set_source_surface (cr, img, 0, 0);
619 cairo_surface_destroy (img);
620 GraphExpose(opt, 0, 0, appData.logoSize, appData.logoSize/2);
624 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
625 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
629 cr = cairo_create (dest);
631 if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) {
632 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
633 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
634 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
637 } else { // evenly colored squares
640 case 0: col = appData.darkSquareColor; break;
641 case 1: col = appData.lightSquareColor; break;
642 case 2: col = "#000000"; break;
643 default: col = "#808080"; break; // cannot happen
645 SetPen(cr, 2.0, col, 0);
646 cairo_rectangle (cr, fac*x, fac*y, squareSize, squareSize);
647 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
654 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
659 if ((int)piece < (int) BlackPawn) {
665 if(appData.upsideDown && flipView) kind = 1 - kind; // swap white and black pieces
666 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
667 cr = cairo_create (dest);
668 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
673 static char *markerColor[8] = { "#FFFF00", "#FF0000", "#00FF00", "#0000FF", "#00FFFF", "#FF00FF", "#FFFFFF", "#000000" };
676 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
680 cr = cairo_create(cs);
681 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
682 if(appData.monoMode) {
683 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
684 cairo_stroke_preserve(cr);
685 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
687 SetPen(cr, 2, markerColor[marker-1], 0);
695 DrawDot (int marker, int x, int y, int r)
696 { // used for atomic captures; no need to draw on backup
697 DoDrawDot(csBoardWindow, marker, x, y, r);
698 GraphExpose(currBoard, x-r, y-r, 2*r, 2*r);
702 DrawText (char *string, int x, int y, int align)
705 cairo_text_extents_t te;
708 cr = cairo_create (csBoardWindow);
709 cairo_select_font_face (cr, "Sans",
710 CAIRO_FONT_SLANT_NORMAL,
711 CAIRO_FONT_WEIGHT_BOLD);
713 cairo_set_font_size (cr, align < 0 ? 2*squareSize/3 : squareSize/4);
714 // calculate where it goes
715 cairo_text_extents (cr, string, &te);
718 xx += squareSize - te.width - te.x_bearing - 1;
719 yy += squareSize - te.height - te.y_bearing - 1;
720 } else if (align == 2) {
721 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
722 } else if (align == 3) {
723 xx += squareSize - te.width -te.x_bearing - 1;
724 yy += -te.y_bearing + 3;
725 } else if (align == 4) {
726 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
727 } else if (align < 0) {
728 xx += squareSize/2 - te.width/2, yy += 9*squareSize/16 - te.y_bearing/2;
731 cairo_move_to (cr, xx-1, yy);
732 if(align == -2) cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); else
733 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
734 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
735 cairo_show_text (cr, string);
740 InscribeKanji (ChessSquare piece, int x, int y)
742 char *p, *q, buf[10];
744 if(piece == EmptySquare) return;
745 if(piece >= BlackPawn) piece = BLACK_TO_WHITE piece;
746 p = appData.inscriptions;
748 while(piece > WhitePawn) {
749 if(*p++ == NULLCHAR) {
750 if(n != WhiteKing) return;
755 while((*p & 0xC0) == 0x80) p++; // skip UTF-8 continuation bytes
759 for(q=buf; (*++q & 0xC0) == 0x80;);
761 DrawText(buf, x, y, n > WhiteLion ? -2 : -1);
765 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *tString, char *bString, int align)
766 { // basic front-end board-draw function: takes care of everything that can be in square:
767 // piece, background, coordinate/count, marker dot
769 if (piece == EmptySquare) {
770 BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
772 pngDrawPiece(csBoardWindow, piece, square_color, x, y);
773 if(appData.inscriptions[0]) InscribeKanji(piece, x, y);
776 if(align) { // square carries inscription (coord or piece count)
777 if(align > 1) DrawText(tString, x, y, align); // top (rank or count)
778 if(bString && *bString) DrawText(bString, x, y, 1); // bottom (always lower right file ID)
781 if(marker) { // print fat marker dot, if requested
782 DoDrawDot(csBoardWindow, marker, x + squareSize/4, y+squareSize/4, squareSize/2);
786 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
788 /* Masks for XPM pieces. Black and white pieces can have
789 different shapes, but in the interest of retaining my
790 sanity pieces must have the same outline on both light
791 and dark squares, and all pieces must use the same
792 background square colors/images. */
794 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
797 InitAnimState (AnimNr anr)
799 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
800 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
801 c_animBufs[anr+4] = csBoardWindow;
802 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
803 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
810 InitAnimState(Player);
814 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
816 static cairo_t *pieceSource;
817 pieceSource = cairo_create (dest);
818 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
819 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
820 else cairo_paint(pieceSource);
821 cairo_destroy (pieceSource);
825 InsertPiece (AnimNr anr, ChessSquare piece)
827 CairoOverlayPiece(piece, c_animBufs[anr]);
831 DrawBlank (AnimNr anr, int x, int y, int startColor)
833 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
836 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
837 int srcX, int srcY, int width, int height, int destX, int destY)
840 c_animBufs[anr+4] = csBoardWindow;
841 cr = cairo_create (c_animBufs[anr+destBuf]);
842 cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY);
843 cairo_rectangle (cr, destX, destY, width, height);
846 if(c_animBufs[anr+destBuf] == csBoardWindow) // suspect that GTK needs this!
847 GraphExpose(currBoard, destX, destY, width, height);
851 SetDragPiece (AnimNr anr, ChessSquare piece)
855 /* [AS] Arrow highlighting support */
858 DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr)
862 cr = cairo_create (cs);
863 cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y);
865 cairo_line_to(cr, arrow[i].x, arrow[i].y);
867 if(appData.monoMode) { // should we always outline arrow?
868 cairo_line_to(cr, arrow[0].x, arrow[0].y);
869 SetPen(cr, 2, "#000000", 0);
870 cairo_stroke_preserve(cr);
872 SetPen(cr, 2, appData.highlightSquareColor, 0);
880 DrawPolygon (Pnt arrow[], int nr)
882 DoDrawPolygon(csBoardWindow, arrow, nr);
883 // if(!dual) DoDrawPolygon(csBoardBackup, arrow, nr);
886 //-------------------- Eval Graph drawing routines (formerly in xevalgraph.h) --------------------
889 ChoosePen(cairo_t *cr, int i)
893 SetPen(cr, 1.0, "#000000", 0);
896 SetPen(cr, 1.0, "#A0A0A0", 1);
899 SetPen(cr, 1.0, "#0000FF", 1);
902 SetPen(cr, 3.0, crWhite, 0);
905 SetPen(cr, 3.0, crBlack, 0);
908 SetPen(cr, 3.0, "#E0E0F0", 0);
913 // [HGM] front-end, added as wrapper to avoid use of LineTo and MoveToEx in other routines (so they can be back-end)
915 DrawSegment (int x, int y, int *lastX, int *lastY, int penType)
917 static int curX, curY;
919 if(penType != PEN_NONE) {
920 cairo_t *cr = cairo_create(DRAWABLE(disp));
921 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
922 cairo_move_to (cr, curX, curY);
923 cairo_line_to (cr, x,y);
924 ChoosePen(cr, penType);
929 if(lastX != NULL) { *lastX = curX; *lastY = curY; }
933 // front-end wrapper for drawing functions to do rectangles
935 DrawRectangle (int left, int top, int right, int bottom, int side, int style)
939 cr = cairo_create (DRAWABLE(disp));
940 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
941 cairo_rectangle (cr, left, top, right-left, bottom-top);
944 case 0: ChoosePen(cr, PEN_BOLDWHITE); break;
945 case 1: ChoosePen(cr, PEN_BOLDBLACK); break;
946 case 2: ChoosePen(cr, PEN_BACKGD); break;
952 cairo_rectangle (cr, left, top, right-left-1, bottom-top-1);
953 ChoosePen(cr, PEN_BLACK);
960 // front-end wrapper for putting text in graph
962 DrawEvalText (char *buf, int cbBuf, int y)
964 // the magic constants 8 and 5 should really be derived from the font size somehow
965 cairo_text_extents_t extents;
966 cairo_t *cr = cairo_create(DRAWABLE(disp));
968 /* GTK-TODO this has to go into the font-selection */
969 cairo_select_font_face (cr, "Sans",
970 CAIRO_FONT_SLANT_NORMAL,
971 CAIRO_FONT_WEIGHT_NORMAL);
972 cairo_set_font_size (cr, 12.0);
975 cairo_text_extents (cr, buf, &extents);
977 cairo_move_to (cr, MarginX - 2 - 8*cbBuf, y+5);
978 cairo_text_path (cr, buf);
979 cairo_set_source_rgb (cr, 0.0, 0.0, 0);
980 cairo_fill_preserve (cr);
981 cairo_set_source_rgb (cr, 0, 1.0, 0);
982 cairo_set_line_width (cr, 0.1);