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];
174 pngPieceBitmaps[i][(int)WhiteMan] = pngPieceBitmaps2[i][(int)WhiteCopper];
175 pngPieceBitmaps[i][(int)WhiteCopper] = pngPieceBitmaps2[i][(int)WhiteMan];
176 pngPieceBitmaps[i][(int)WhiteAxe] = pngPieceBitmaps2[i][(int)WhiteCannon];
177 pngPieceBitmaps[i][(int)WhiteCannon] = pngPieceBitmaps2[i][(int)WhiteAxe];
182 #define BoardSize int
184 InitDrawingSizes (BoardSize boardSize, int flags)
185 { // [HGM] resize is functional now, but for board format changes only (nr of ranks, files)
186 int boardWidth, boardHeight;
187 static int oldWidth, oldHeight;
188 static VariantClass oldVariant;
189 static int oldTwoBoards = 0, oldNrOfFiles = 0;
191 if(!mainOptions[W_BOARD].handle) return;
193 if(boardSize == -2 && gameInfo.variant != oldVariant
194 && oldNrOfFiles && oldNrOfFiles != BOARD_WIDTH) { // called because variant switch changed board format
195 squareSize = ((squareSize + lineGap) * oldNrOfFiles + 0.5*BOARD_WIDTH) / BOARD_WIDTH; // keep total width fixed
196 if(appData.overrideLineGap < 0) lineGap = squareSize < 37 ? 1 : squareSize < 59 ? 2 : squareSize < 116 ? 3 : 4;
197 squareSize -= lineGap;
201 oldNrOfFiles = BOARD_WIDTH;
203 if(oldTwoBoards && !twoBoards) PopDown(DummyDlg);
204 oldTwoBoards = twoBoards;
206 if(appData.overrideLineGap >= 0) lineGap = appData.overrideLineGap;
207 boardWidth = lineGap + BOARD_WIDTH * (squareSize + lineGap);
208 boardHeight = lineGap + BOARD_HEIGHT * (squareSize + lineGap);
210 if(boardWidth != oldWidth || boardHeight != oldHeight) { // do resizing stuff only if size actually changed
212 oldWidth = boardWidth; oldHeight = boardHeight;
214 CreateAnyPieces(0); // redo texture scaling
217 * Inhibit shell resizing.
219 ResizeBoardWindow(boardWidth, boardHeight, 0);
224 // [HGM] pieces: tailor piece bitmaps to needs of specific variant
227 if(gameInfo.variant != oldVariant) { // and only if variant changed
229 SelectPieces(gameInfo.variant);
231 oldVariant = gameInfo.variant;
237 ExposeRedraw (Option *graph, int x, int y, int w, int h)
238 { // copy a selected part of the buffer bitmap to the display
239 cairo_t *cr = cairo_create((cairo_surface_t *) graph->textValue);
240 cairo_set_source_surface(cr, (cairo_surface_t *) graph->choice, 0, 0);
241 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
242 cairo_rectangle(cr, x, y, w, h);
248 CreatePNGBoard (char *s, int kind)
251 static float n[2] = { 1., 1. };
252 if(!appData.useBitmaps || s == NULL || *s == 0 || *s == '*') { useTexture &= ~(kind+1); return; }
253 textureW[kind] = 0; // prevents bitmap from being used if not succesfully loaded
254 if(strstr(s, ".png")) {
255 cairo_surface_t *img = cairo_image_surface_create_from_png (s);
259 if(pngOriginalBoardBitmap[kind]) cairo_surface_destroy(pngOriginalBoardBitmap[kind]);
260 if(n[kind] != 1.) cairo_surface_destroy(pngBoardBitmap[kind]);
261 useTexture |= kind + 1; pngOriginalBoardBitmap[kind] = img;
262 w = textureW[kind] = cairo_image_surface_get_width (img);
263 h = textureH[kind] = cairo_image_surface_get_height (img);
265 while((q = strchr(p+1, '-'))) p = q; // find last '-'
266 if(strlen(p) < 11 && sscanf(p, "-%dx%d.pn%c", &f, &r, &c) == 3 && c == 'g') {
267 if(f == 0 || r == 0) f = BOARD_WIDTH, r = BOARD_HEIGHT; // 0x0 means 'fits any', so make it fit
268 textureW[kind] = (w*BOARD_WIDTH)/f; // sync cutting locations with square pattern
269 textureH[kind] = (h*BOARD_HEIGHT)/r;
270 n[kind] = r*squareSize/h; // scale to make it fit exactly vertically
272 if((p = strstr(s, "xq")) && (p == s || p[-1] == '/')) { // assume full-board image for Xiangqi
273 while(0.8*squareSize*BOARD_WIDTH > n[kind]*w || 0.8*squareSize*BOARD_HEIGHT > n[kind]*h) n[kind]++;
275 while(squareSize > n[kind]*w || squareSize > n[kind]*h) n[kind]++;
277 if(n[kind] == 1.) pngBoardBitmap[kind] = img; else {
278 // create scaled-up copy of the raw png image when it was too small
279 cairo_surface_t *cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, n[kind]*w, n[kind]*h);
280 cairo_t *cr = cairo_create(cs);
281 pngBoardBitmap[kind] = cs; textureW[kind] *= n[kind]; textureH[kind] *= n[kind];
282 // cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
283 cairo_scale(cr, n[kind], n[kind]);
284 cairo_set_source_surface (cr, img, 0, 0);
292 char *pngPieceNames[] = // must be in same order as internal piece encoding
293 { "Pawn", "Knight", "Bishop", "Rook", "Queen", "Advisor", "Elephant", "Archbishop", "Marshall", "Gold", "Commoner",
294 "Canon", "Nightrider", "CrownedBishop", "CrownedRook", "Crown", "Chancellor", "Hawk", "Lance", "Cobra", "Unicorn", "Lion",
295 "Butterfly", "Zebra", "Camel", "Tower", "Wolf", "Dragon", "Duck", "Axe", "Hat", "Gnu", "Cub",
296 "GoldPawn", "Claw", "PromoHorse", "PromoDragon", "GoldLance", "PromoSword", "Prince", "Phoenix", "Kylin", "PromoRook", "PromoHSword",
297 "Dolphin", "Sword", "Leopard", "HSword", "GoldSilver", "Princess", "HCrown", "Pegasus", "Elephant", "PromoBishop",
298 "Left", "GoldKnight", "Wizard", "Copper", "Iron", "Viking", "Flag", "Lance", "Right", "LShield", "RShield", "King",
299 "Claw", "GoldKnight", "GoldLance", "GoldSilver", NULL
302 char *backupPiece[] = { "Princess", NULL, NULL, NULL, NULL, NULL, NULL,
303 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
304 NULL, NULL, NULL, NULL, NULL, NULL, "King", "Queen", "Lion" }; // pieces that map on other when not kanji
307 LoadSVG (char *dir, int color, int piece, int retry)
310 RsvgHandle *svg=svgPieces[color][piece];
311 RsvgDimensionData svg_dimensions;
312 GError *svgerror=NULL;
313 cairo_surface_t *img;
315 char *name = (retry ? backupPiece[piece - WhiteGrasshopper] : pngPieceNames[piece]);
317 if(!name) return NULL;
319 snprintf(buf, MSG_SIZ, "%s/%s%s.svg", dir, color ? "Black" : "White", name);
322 svg = rsvg_handle_new_from_file(buf, &svgerror);
323 if(!svg && *appData.inscriptions) { // if there is no piece-specific SVG, but we make inscriptions, try general background
324 snprintf(buf, MSG_SIZ, "%s/%sTile.svg", dir, color ? "Black" : "White");
325 svg = rsvg_handle_new_from_file(buf, &svgerror);
330 rsvg_handle_get_dimensions(svg, &svg_dimensions);
331 img = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, squareSize, squareSize);
333 cr = cairo_create(img);
334 cairo_scale(cr, squareSize/(double) svg_dimensions.width, squareSize/(double) svg_dimensions.height);
335 rsvg_handle_render_cairo(svg, cr);
336 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
337 if(pngPieceImages[color][piece]) cairo_surface_destroy(pngPieceImages[color][piece]);
338 pngPieceImages[color][piece] = img;
344 if(!retry && piece >= WhiteGrasshopper && piece <= WhiteNothing) // pieces that are only different in kanji sets
345 return LoadSVG(dir, color, piece, 1);
347 g_error_free(svgerror);
352 ScaleOnePiece (int color, int piece)
356 cairo_surface_t *img, *cs;
361 svgPieces[color][piece] = LoadSVG("", color, piece, 0); // this fills pngPieceImages if we had cached svg with bitmap of wanted size
363 if(!pngPieceImages[color][piece]) { // we don't have cached bitmap (implying we did not have cached svg)
364 if(*appData.pieceDirectory) { // user specified piece directory
365 snprintf(buf, MSG_SIZ, "%s/%s%s.png", appData.pieceDirectory, color ? "Black" : "White", pngPieceNames[piece]);
366 img = cairo_image_surface_create_from_png (buf); // try if there are png pieces there
367 if(cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) { // there were not
368 svgPieces[color][piece] = LoadSVG(appData.pieceDirectory, color, piece, 0); // so try if he has svg there
369 } else pngPieceImages[color][piece] = img;
373 if(!pngPieceImages[color][piece]) { // we still did not manage to acquire a piece bitmap
374 static int warned = 0;
375 if(!(svgPieces[color][piece] = LoadSVG(svgDir, color, piece, 0)) // try to fall back on installed svg
376 && !warned && strcmp(pngPieceNames[piece], "Tile")) { // but do not complain about missing 'Tile'
377 char *msg = _("No default pieces installed!\nSelect your own using '-pieceImageDirectory'.");
378 printf("%s (%s)\n", msg, pngPieceNames[piece]); // give up
379 DisplayError(msg, 0);
380 warned = 1; // prevent error message being repeated for each piece type
384 img = pngPieceImages[color][piece];
386 // create new bitmap to hold scaled piece image (and remove any old)
387 if(pngPieceBitmaps2[color][piece]) cairo_surface_destroy (pngPieceBitmaps2[color][piece]);
388 pngPieceBitmaps2[color][piece] = cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
392 // scaled copying of the raw png image
393 cr = cairo_create(cs);
394 w = cairo_image_surface_get_width (img);
395 h = cairo_image_surface_get_height (img);
396 cairo_scale(cr, squareSize/w, squareSize/h);
397 cairo_set_source_surface (cr, img, 0, 0);
401 if(!appData.trueColors || !*appData.pieceDirectory) { // operate on bitmap to color it (king-size hack...)
402 int stride = cairo_image_surface_get_stride(cs)/4;
403 int *buf = (int *) cairo_image_surface_get_data(cs);
405 sscanf(color ? appData.blackPieceColor+1 : appData.whitePieceColor+1, "%x", &p); // replacement color
406 cairo_surface_flush(cs);
407 for(i=0; i<squareSize; i++) for(j=0; j<squareSize; j++) {
410 unsigned int c = buf[i*stride + j];
411 a = c >> 24; r = c >> 16 & 255; // alpha and red, where red is the 'white' weight, since white is #FFFFCC in the source images
412 f = (color ? a - r : r)/255.; // fraction of black or white in the mix that has to be replaced
413 buf[i*stride + j] = c & 0xFF000000; // alpha channel is kept at same opacity
414 buf[i*stride + j] += ((int)(f*(p&0xFF0000)) & 0xFF0000) + ((int)(f*(p&0xFF00)) & 0xFF00) + (int)(f*(p&0xFF)); // add desired fraction of new color
415 if(color) buf[i*stride + j] += r | r << 8 | r << 16; // details on black pieces get their weight added in pure white
416 if(appData.monoMode) {
417 if(a < 64) buf[i*stride + j] = 0; // if not opaque enough, totally transparent
418 else if(2*r < a) buf[i*stride + j] = 0xFF000000; // if not light enough, totally black
419 else buf[i*stride + j] = 0xFFFFFFFF; // otherwise white
422 cairo_surface_mark_dirty(cs);
431 for(p=0; pngPieceNames[p]; p++) {
435 SelectPieces(gameInfo.variant);
439 CreateAnyPieces (int p)
440 { // [HGM] taken out of main
441 if(p) CreatePNGPieces();
442 CreatePNGBoard(appData.liteBackTextureFile, 1);
443 CreatePNGBoard(appData.darkBackTextureFile, 0);
447 InitDrawingParams (int reloadPieces)
451 for(i=0; i<2; i++) for(p=0; p<BlackPawn+4; p++) {
452 if(pngPieceImages[i][p]) cairo_surface_destroy(pngPieceImages[i][p]);
453 pngPieceImages[i][p] = NULL;
454 if(svgPieces[i][p]) rsvg_handle_close(svgPieces[i][p], NULL);
455 svgPieces[i][p] = NULL;
460 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
463 Color (char *col, int n)
466 sscanf(col, "#%x", &c);
472 SetPen (cairo_t *cr, float w, char *col, int dash)
474 static const double dotted[] = {4.0, 4.0};
475 static int len = sizeof(dotted) / sizeof(dotted[0]);
476 cairo_set_line_width (cr, w);
477 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
478 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
481 void DrawSeekAxis( int x, int y, int xTo, int yTo )
486 cr = cairo_create (csBoardWindow);
488 cairo_move_to (cr, x, y);
489 cairo_line_to(cr, xTo, yTo );
491 SetPen(cr, 2, "#000000", 0);
496 GraphExpose(currBoard, x-1, yTo-1, xTo-x+2, y-yTo+2);
499 void DrawSeekBackground( int left, int top, int right, int bottom )
501 cairo_t *cr = cairo_create (csBoardWindow);
503 cairo_rectangle (cr, left, top, right-left, bottom-top);
505 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
510 GraphExpose(currBoard, left, top, right-left, bottom-top);
513 void DrawSeekText(char *buf, int x, int y)
515 cairo_t *cr = cairo_create (csBoardWindow);
517 cairo_select_font_face (cr, "Sans",
518 CAIRO_FONT_SLANT_NORMAL,
519 CAIRO_FONT_WEIGHT_NORMAL);
521 cairo_set_font_size (cr, 12.0);
523 cairo_move_to (cr, x, y+4);
524 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
525 cairo_show_text( cr, buf);
529 GraphExpose(currBoard, x-5, y-10, 60, 15);
532 void DrawSeekDot(int x, int y, int colorNr)
534 cairo_t *cr = cairo_create (csBoardWindow);
535 int square = colorNr & 0x80;
539 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
541 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
543 SetPen(cr, 2, "#000000", 0);
544 cairo_stroke_preserve(cr);
546 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
547 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
548 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
554 GraphExpose(currBoard, x-squareSize/8, y-squareSize/8, 2*(squareSize/8), 2*(squareSize/8));
558 InitDrawingHandle (Option *opt)
560 csBoardWindow = DRAWABLE(opt);
568 if (lineGap == 0) return;
570 /* [HR] Split this into 2 loops for non-square boards. */
572 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
573 gridSegments[i].x1 = 0;
575 lineGap + BOARD_WIDTH * (squareSize + lineGap);
576 gridSegments[i].y1 = gridSegments[i].y2
577 = lineGap / 2 + (i * (squareSize + lineGap));
580 for (j = 0; j < BOARD_WIDTH + 1; j++) {
581 gridSegments[j + i].y1 = 0;
582 gridSegments[j + i].y2 =
583 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
584 gridSegments[j + i].x1 = gridSegments[j + i].x2
585 = lineGap / 2 + (j * (squareSize + lineGap));
592 /* draws a grid starting around Nx, Ny squares starting at x,y */
594 float odd = (lineGap & 1)/2.;
598 cr = cairo_create (csBoardWindow);
600 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
601 SetPen(cr, lineGap, "#000000", 0);
604 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
606 int h = (gridSegments[i].y1 == gridSegments[i].y2); // horizontal
607 cairo_move_to (cr, gridSegments[i].x1 + !h*odd, gridSegments[i].y1 + h*odd);
608 cairo_line_to (cr, gridSegments[i].x2 + !h*odd, gridSegments[i].y2 + h*odd);
619 DrawBorder (int x, int y, int type, int odd)
625 case 0: col = "#000000"; break;
626 case 1: col = appData.highlightSquareColor; break;
627 case 2: col = appData.premoveHighlightColor; break;
628 default: col = "#808080"; break; // cannot happen
630 cr = cairo_create(csBoardWindow);
631 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
632 cairo_rectangle(cr, x+odd/2., y+odd/2., squareSize+lineGap, squareSize+lineGap);
633 SetPen(cr, lineGap, col, 0);
636 GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap+odd, squareSize+2*lineGap+odd);
640 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
642 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
643 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
645 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
646 if(textureW[kind] < W*squareSize)
647 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
649 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
650 if(textureH[kind] < H*squareSize)
651 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
653 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
658 DrawLogo (Option *opt, void *logo)
660 cairo_surface_t *img;
665 cr = cairo_create(DRAWABLE(opt));
666 cairo_rectangle (cr, 0, 0, opt->max, opt->value);
667 cairo_set_source_rgba(cr, 0.5, 0.5, 0.5, 1.0);
668 cairo_fill(cr); // paint background in case logo does not exist
670 img = cairo_image_surface_create_from_png (logo);
671 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
672 w = cairo_image_surface_get_width (img);
673 h = cairo_image_surface_get_height (img);
674 // cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
675 cairo_scale(cr, (float)opt->max/w, (float)opt->value/h);
676 cairo_set_source_surface (cr, img, 0, 0);
679 cairo_surface_destroy (img);
682 GraphExpose(opt, 0, 0, opt->max, opt->value);
686 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
687 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
691 cr = cairo_create (dest);
693 if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) {
694 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
695 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
696 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
699 } else { // evenly colored squares
702 case 0: col = appData.darkSquareColor; break;
703 case 1: col = appData.lightSquareColor; break;
704 case 2: col = "#000000"; break;
705 default: col = "#808080"; break; // cannot happen
707 SetPen(cr, 2.0, col, 0);
708 cairo_rectangle (cr, fac*x, fac*y, squareSize, squareSize);
709 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
716 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
721 if ((int)piece < (int) BlackPawn) {
727 if(appData.upsideDown && flipView) kind = 1 - kind; // swap white and black pieces
728 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
729 cr = cairo_create (dest);
730 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
735 static char *markerColor[8] = { "#FFFF00", "#FF0000", "#00FF00", "#0000FF", "#00FFFF", "#FF00FF", "#FFFFFF", "#000000" };
738 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
742 cr = cairo_create(cs);
743 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
744 if(appData.monoMode) {
745 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
746 cairo_stroke_preserve(cr);
747 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
749 SetPen(cr, 2, markerColor[marker-1], 0);
757 DrawDot (int marker, int x, int y, int r)
758 { // used for atomic captures; no need to draw on backup
759 DoDrawDot(csBoardWindow, marker, x, y, r);
760 GraphExpose(currBoard, x-r, y-r, 2*r, 2*r);
764 DrawUnicode (cairo_surface_t *canvas, char *string, int x, int y, char id, int flip)
766 // cairo_text_extents_t te;
770 PangoFontDescription *desc;
772 char fontName[MSG_SIZ];
774 cr = cairo_create (canvas);
775 layout = pango_cairo_create_layout(cr);
776 pango_layout_set_text(layout, string, -1);
777 snprintf(fontName, MSG_SIZ, "Sans Normal %dpx", 5*squareSize/8);
778 desc = pango_font_description_from_string(fontName);
779 pango_layout_set_font_description(layout, desc);
780 pango_font_description_free(desc);
781 pango_layout_get_pixel_extents(layout, NULL, &r);
782 cairo_translate(cr, x + squareSize/2 - s*r.width/2, y + (8+s)*squareSize/16 - s*r.height/2);
783 if(s < 0) cairo_rotate(cr, G_PI);
784 cairo_set_source_rgb(cr, (id == '+' ? 1.0 : 0.0), 0.0, 0.0);
785 pango_cairo_update_layout(cr, layout);
786 pango_cairo_show_layout(cr, layout);
787 g_object_unref(layout);
792 DrawText (char *string, int x, int y, int align)
795 cairo_text_extents_t te;
798 cr = cairo_create (csBoardWindow);
799 cairo_select_font_face (cr, "Sans",
800 CAIRO_FONT_SLANT_NORMAL,
801 CAIRO_FONT_WEIGHT_BOLD);
803 cairo_set_font_size (cr, align < 0 ? 2*squareSize/3 : squareSize/4);
804 // calculate where it goes
805 cairo_text_extents (cr, string, &te);
808 xx += squareSize - te.width - te.x_bearing - 1;
809 yy += squareSize - te.height - te.y_bearing - 1;
810 } else if (align == 2) {
811 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
812 } else if (align == 3) {
813 xx += squareSize - te.width -te.x_bearing - 1;
814 yy += -te.y_bearing + 3;
815 } else if (align == 4) {
816 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
819 cairo_move_to (cr, xx-1, yy);
820 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
821 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
822 cairo_show_text (cr, string);
827 InscribeKanji (cairo_surface_t *canvas, ChessSquare piece, int x, int y)
829 char *p, *q, buf[10];
830 int n, flip = appData.upsideDown && flipView == (piece < BlackPawn);
831 if(piece == EmptySquare) return;
832 if(piece >= BlackPawn) piece = BLACK_TO_WHITE piece;
833 p = appData.inscriptions;
835 while(piece > WhitePawn) {
836 if(*p++ == NULLCHAR) {
837 if(n != WhiteKing) return;
842 while((*p & 0xC0) == 0x80) p++; // skip UTF-8 continuation bytes
846 for(q=buf; (*++q & 0xC0) == 0x80;);
848 DrawUnicode(canvas, buf, x, y, PieceToChar(n), flip);
852 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *tString, char *bString, int align)
853 { // basic front-end board-draw function: takes care of everything that can be in square:
854 // piece, background, coordinate/count, marker dot
856 if (piece == EmptySquare) {
857 BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
859 pngDrawPiece(csBoardWindow, piece, square_color, x, y);
860 if(appData.inscriptions[0]) InscribeKanji(csBoardWindow, piece, x, y);
863 if(align) { // square carries inscription (coord or piece count)
864 if(align > 1) DrawText(tString, x, y, align); // top (rank or count)
865 if(bString && *bString) DrawText(bString, x, y, 1); // bottom (always lower right file ID)
868 if(marker) { // print fat marker dot, if requested
869 DoDrawDot(csBoardWindow, marker, x + squareSize/4, y+squareSize/4, squareSize/2);
873 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
875 /* Masks for XPM pieces. Black and white pieces can have
876 different shapes, but in the interest of retaining my
877 sanity pieces must have the same outline on both light
878 and dark squares, and all pieces must use the same
879 background square colors/images. */
881 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
884 InitAnimState (AnimNr anr)
886 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
887 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
888 c_animBufs[anr+4] = csBoardWindow;
889 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
890 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
897 InitAnimState(Player);
901 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
903 static cairo_t *pieceSource;
904 pieceSource = cairo_create (dest);
905 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
906 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
907 else cairo_paint(pieceSource);
908 cairo_destroy (pieceSource);
909 if(appData.inscriptions[0]) InscribeKanji(dest, piece, 0, 0);
913 InsertPiece (AnimNr anr, ChessSquare piece)
915 CairoOverlayPiece(piece, c_animBufs[anr]);
919 DrawBlank (AnimNr anr, int x, int y, int startColor)
921 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
924 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
925 int srcX, int srcY, int width, int height, int destX, int destY)
928 c_animBufs[anr+4] = csBoardWindow;
929 cr = cairo_create (c_animBufs[anr+destBuf]);
930 cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY);
931 cairo_rectangle (cr, destX, destY, width, height);
934 if(c_animBufs[anr+destBuf] == csBoardWindow) // suspect that GTK needs this!
935 GraphExpose(currBoard, destX, destY, width, height);
939 SetDragPiece (AnimNr anr, ChessSquare piece)
943 /* [AS] Arrow highlighting support */
946 DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr)
950 cr = cairo_create (cs);
951 cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y);
953 cairo_line_to(cr, arrow[i].x, arrow[i].y);
955 if(appData.monoMode) { // should we always outline arrow?
956 cairo_line_to(cr, arrow[0].x, arrow[0].y);
957 SetPen(cr, 2, "#000000", 0);
958 cairo_stroke_preserve(cr);
960 SetPen(cr, 2, appData.highlightSquareColor, 0);
968 DrawPolygon (Pnt arrow[], int nr)
970 DoDrawPolygon(csBoardWindow, arrow, nr);
971 // if(!dual) DoDrawPolygon(csBoardBackup, arrow, nr);
974 //-------------------- Eval Graph drawing routines (formerly in xevalgraph.h) --------------------
977 ChoosePen(cairo_t *cr, int i)
981 SetPen(cr, 1.0, "#000000", 0);
984 SetPen(cr, 1.0, "#A0A0A0", 1);
987 SetPen(cr, 1.0, "#0000FF", 1);
990 SetPen(cr, 3.0, crWhite, 0);
993 SetPen(cr, 3.0, crBlack, 0);
996 SetPen(cr, 3.0, "#E0E0F0", 0);
1001 // [HGM] front-end, added as wrapper to avoid use of LineTo and MoveToEx in other routines (so they can be back-end)
1003 DrawSegment (int x, int y, int *lastX, int *lastY, int penType)
1005 static int curX, curY;
1007 if(penType != PEN_NONE) {
1008 cairo_t *cr = cairo_create(DRAWABLE(disp));
1009 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
1010 cairo_move_to (cr, curX, curY);
1011 cairo_line_to (cr, x,y);
1012 ChoosePen(cr, penType);
1017 if(lastX != NULL) { *lastX = curX; *lastY = curY; }
1021 // front-end wrapper for drawing functions to do rectangles
1023 DrawRectangle (int left, int top, int right, int bottom, int side, int style)
1027 cr = cairo_create (DRAWABLE(disp));
1028 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
1029 cairo_rectangle (cr, left, top, right-left, bottom-top);
1032 case 0: ChoosePen(cr, PEN_BOLDWHITE); break;
1033 case 1: ChoosePen(cr, PEN_BOLDBLACK); break;
1034 case 2: ChoosePen(cr, PEN_BACKGD); break;
1040 cairo_rectangle (cr, left, top, right-left-1, bottom-top-1);
1041 ChoosePen(cr, PEN_BLACK);
1048 // front-end wrapper for putting text in graph
1050 DrawEvalText (char *buf, int cbBuf, int y)
1052 // the magic constants 8 and 5 should really be derived from the font size somehow
1053 cairo_text_extents_t extents;
1054 cairo_t *cr = cairo_create(DRAWABLE(disp));
1056 /* GTK-TODO this has to go into the font-selection */
1057 cairo_select_font_face (cr, "Sans",
1058 CAIRO_FONT_SLANT_NORMAL,
1059 CAIRO_FONT_WEIGHT_NORMAL);
1060 cairo_set_font_size (cr, 12.0);
1063 cairo_text_extents (cr, buf, &extents);
1065 cairo_move_to (cr, MarginX - 2 - 8*cbBuf, y+5);
1066 cairo_text_path (cr, buf);
1067 cairo_set_source_rgb (cr, 0.0, 0.0, 0);
1068 cairo_fill_preserve (cr);
1069 cairo_set_source_rgb (cr, 0, 1.0, 0);
1070 cairo_set_line_width (cr, 0.1);