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 <librsvg/rsvg.h>
58 #include <librsvg/rsvg-cairo.h>
59 #include <pango/pangocairo.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]; // 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]; // 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)WhitePKnight];
147 pngPieceBitmaps[i][(int)WhiteGrasshopper] = pngPieceBitmaps2[i][(int)WhitePLance];
148 pngPieceBitmaps[i][(int)WhiteSilver] = pngPieceBitmaps2[i][(int)WhitePSilver];
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)WhiteClaw];
166 pngPieceBitmaps[i][(int)WhiteClaw] = pngPieceBitmaps2[i][(int)WhiteNightrider];
167 pngPieceBitmaps[i][(int)WhiteUnicorn] = pngPieceBitmaps2[i][(int)WhiteCat];
168 pngPieceBitmaps[i][(int)WhiteSilver] = pngPieceBitmaps2[i][(int)WhiteSword];
169 pngPieceBitmaps[i][(int)WhiteFalcon] = pngPieceBitmaps2[i][(int)WhiteDagger];
170 pngPieceBitmaps[i][(int)WhiteCat] = pngPieceBitmaps2[i][(int)WhiteUnicorn];
171 pngPieceBitmaps[i][(int)WhiteSword] = pngPieceBitmaps2[i][(int)WhiteSilver];
172 pngPieceBitmaps[i][(int)WhiteDagger] = pngPieceBitmaps2[i][(int)WhiteFalcon];
173 pngPieceBitmaps[i][(int)WhiteMan] = pngPieceBitmaps2[i][(int)WhiteCopper];
174 pngPieceBitmaps[i][(int)WhiteCopper] = pngPieceBitmaps2[i][(int)WhiteMan];
175 pngPieceBitmaps[i][(int)WhiteAxe] = pngPieceBitmaps2[i][(int)WhiteCannon];
176 pngPieceBitmaps[i][(int)WhiteCannon] = pngPieceBitmaps2[i][(int)WhiteAxe];
181 #define BoardSize int
183 InitDrawingSizes (BoardSize boardSize, int flags)
184 { // [HGM] resize is functional now, but for board format changes only (nr of ranks, files)
185 int boardWidth, boardHeight;
186 static int oldWidth, oldHeight;
187 static VariantClass oldVariant;
188 static int oldTwoBoards = 0, oldNrOfFiles = 0;
190 if(!mainOptions[W_BOARD].handle) return;
192 if(boardSize == -2 && gameInfo.variant != oldVariant
193 && oldNrOfFiles && oldNrOfFiles != BOARD_WIDTH) { // called because variant switch changed board format
194 squareSize = ((squareSize + lineGap) * oldNrOfFiles + 0.5*BOARD_WIDTH) / BOARD_WIDTH; // keep total width fixed
195 if(appData.overrideLineGap < 0) lineGap = squareSize < 37 ? 1 : squareSize < 59 ? 2 : squareSize < 116 ? 3 : 4;
196 squareSize -= lineGap;
200 oldNrOfFiles = BOARD_WIDTH;
202 if(oldTwoBoards && !twoBoards) PopDown(DummyDlg);
203 oldTwoBoards = twoBoards;
205 if(appData.overrideLineGap >= 0) lineGap = appData.overrideLineGap;
206 boardWidth = lineGap + BOARD_WIDTH * (squareSize + lineGap);
207 boardHeight = lineGap + BOARD_HEIGHT * (squareSize + lineGap);
209 if(boardWidth != oldWidth || boardHeight != oldHeight) { // do resizing stuff only if size actually changed
211 oldWidth = boardWidth; oldHeight = boardHeight;
213 CreateAnyPieces(0); // redo texture scaling
216 * Inhibit shell resizing.
218 ResizeBoardWindow(boardWidth, boardHeight, 0);
223 // [HGM] pieces: tailor piece bitmaps to needs of specific variant
226 if(gameInfo.variant != oldVariant) { // and only if variant changed
228 SelectPieces(gameInfo.variant);
230 oldVariant = gameInfo.variant;
236 ExposeRedraw (Option *graph, int x, int y, int w, int h)
237 { // copy a selected part of the buffer bitmap to the display
238 cairo_t *cr = cairo_create((cairo_surface_t *) graph->textValue);
239 cairo_set_source_surface(cr, (cairo_surface_t *) graph->choice, 0, 0);
240 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
241 cairo_rectangle(cr, x, y, w, h);
247 CreatePNGBoard (char *s, int kind)
250 static float n[2] = { 1., 1. };
251 if(!appData.useBitmaps || s == NULL || *s == 0 || *s == '*') { useTexture &= ~(kind+1); return; }
252 textureW[kind] = 0; // prevents bitmap from being used if not succesfully loaded
253 if(strstr(s, ".png")) {
254 cairo_surface_t *img = cairo_image_surface_create_from_png (s);
255 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
258 if(pngOriginalBoardBitmap[kind]) cairo_surface_destroy(pngOriginalBoardBitmap[kind]);
259 if(n[kind] != 1.) cairo_surface_destroy(pngBoardBitmap[kind]);
260 useTexture |= kind + 1; pngOriginalBoardBitmap[kind] = img;
261 w = textureW[kind] = cairo_image_surface_get_width (img);
262 h = textureH[kind] = cairo_image_surface_get_height (img);
264 while((q = strchr(p+1, '-'))) p = q; // find last '-'
265 if(strlen(p) < 11 && sscanf(p, "-%dx%d.pn%c", &f, &r, &c) == 3 && c == 'g') {
266 if(f == 0 || r == 0) f = BOARD_WIDTH, r = BOARD_HEIGHT; // 0x0 means 'fits any', so make it fit
267 textureW[kind] = (w*BOARD_WIDTH)/f; // sync cutting locations with square pattern
268 textureH[kind] = (h*BOARD_HEIGHT)/r;
269 n[kind] = r*squareSize/h; // scale to make it fit exactly vertically
271 if((p = strstr(s, "xq")) && (p == s || p[-1] == '/')) { // assume full-board image for Xiangqi
272 while(0.8*squareSize*BOARD_WIDTH > n[kind]*w || 0.8*squareSize*BOARD_HEIGHT > n[kind]*h) n[kind]++;
274 while(squareSize > n[kind]*w || squareSize > n[kind]*h) n[kind]++;
276 if(n[kind] == 1.) pngBoardBitmap[kind] = img; else {
277 // create scaled-up copy of the raw png image when it was too small
278 cairo_surface_t *cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, n[kind]*w, n[kind]*h);
279 cairo_t *cr = cairo_create(cs);
280 pngBoardBitmap[kind] = cs; textureW[kind] *= n[kind]; textureH[kind] *= n[kind];
281 // cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
282 cairo_scale(cr, n[kind], n[kind]);
283 cairo_set_source_surface (cr, img, 0, 0);
291 char *pngPieceNames[] = // must be in same order as internal piece encoding
292 { "Pawn", "Knight", "Bishop", "Rook", "Queen", "Advisor", "Elephant", "Archbishop", "Marshall", "Gold", "Commoner",
293 "Canon", "Nightrider", "CrownedBishop", "CrownedRook", "Crown", "Chancellor", "Hawk", "Lance", "Cobra", "Unicorn", "Lion",
294 "Sword", "Zebra", "Camel", "Tower", "Wolf", "Hat", "Duck", "Lance", "Dragon", "Gnu", "Cub",
295 "LShield", "Pegasus", "Wizard", "Copper", "Iron", "Viking", "Flag", "Axe", "Dolphin", "Leopard", "Claw",
296 "Left", "Butterfly", "PromoBishop", "PromoRook", "HCrown", "RShield", "Prince", "Phoenix", "Kylin", "Drunk", "Right",
297 "GoldPawn", "GoldKnight", "PromoHorse", "PromoDragon", "GoldLance", "GoldSilver", "HSword", "PromoSword", "PromoHSword", "Princess", "King",
301 char *backupPiece[] = { // pieces that map on other in default theme ("Crown" - "Drunk")
302 "Princess", NULL, NULL, NULL, NULL, NULL, NULL,
303 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, "Chancellor", NULL,
304 NULL, "Knight", NULL, "Commoner", NULL, NULL, NULL, "Canon", NULL, NULL, NULL,
305 NULL, NULL, NULL, NULL, NULL, NULL, "King", "Queen", "Lion", "Elephant"
309 LoadSVG (char *dir, int color, int piece, int retry)
312 RsvgHandle *svg=svgPieces[color][piece];
313 RsvgDimensionData svg_dimensions;
314 GError *svgerror=NULL;
315 cairo_surface_t *img;
317 char *name = (retry ? backupPiece[piece - WhiteGrasshopper] : pngPieceNames[piece]);
319 if(!name) return NULL;
321 snprintf(buf, MSG_SIZ, "%s/%s%s.svg", dir, color ? "Black" : "White", name);
324 svg = rsvg_handle_new_from_file(buf, &svgerror);
325 if(!svg && *appData.inscriptions) { // if there is no piece-specific SVG, but we make inscriptions, try general background
326 snprintf(buf, MSG_SIZ, "%s/%sTile.svg", dir, color ? "Black" : "White");
327 svg = rsvg_handle_new_from_file(buf, &svgerror);
332 rsvg_handle_get_dimensions(svg, &svg_dimensions);
333 img = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, squareSize, squareSize);
335 cr = cairo_create(img);
336 cairo_scale(cr, squareSize/(double) svg_dimensions.width, squareSize/(double) svg_dimensions.height);
337 rsvg_handle_render_cairo(svg, cr);
338 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
339 if(pngPieceImages[color][piece]) cairo_surface_destroy(pngPieceImages[color][piece]);
340 pngPieceImages[color][piece] = img;
346 if(!retry && piece >= WhiteGrasshopper && piece <= WhiteDrunk) // pieces that are only different in kanji sets
347 return LoadSVG(dir, color, piece, 1);
349 g_error_free(svgerror);
354 ScaleOnePiece (int color, int piece)
358 cairo_surface_t *img, *cs;
363 svgPieces[color][piece] = LoadSVG("", color, piece, 0); // this fills pngPieceImages if we had cached svg with bitmap of wanted size
365 if(!pngPieceImages[color][piece]) { // we don't have cached bitmap (implying we did not have cached svg)
366 if(*appData.pieceDirectory) { // user specified piece directory
367 snprintf(buf, MSG_SIZ, "%s/%s%s.png", appData.pieceDirectory, color ? "Black" : "White", pngPieceNames[piece]);
368 img = cairo_image_surface_create_from_png (buf); // try if there are png pieces there
369 if(cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) { // there were not
370 svgPieces[color][piece] = LoadSVG(appData.pieceDirectory, color, piece, 0); // so try if he has svg there
371 } else pngPieceImages[color][piece] = img;
375 if(!pngPieceImages[color][piece]) { // we still did not manage to acquire a piece bitmap
376 static int warned = 0;
377 if(!(svgPieces[color][piece] = LoadSVG(svgDir, color, piece, 0)) // try to fall back on installed svg
378 && !warned && strcmp(pngPieceNames[piece], "Tile")) { // but do not complain about missing 'Tile'
379 char *msg = _("No default pieces installed!\nSelect your own using '-pieceImageDirectory'.");
380 printf("%s (%s)\n", msg, pngPieceNames[piece]); // give up
381 DisplayError(msg, 0);
382 warned = 1; // prevent error message being repeated for each piece type
386 img = pngPieceImages[color][piece];
388 // create new bitmap to hold scaled piece image (and remove any old)
389 if(pngPieceBitmaps2[color][piece]) cairo_surface_destroy (pngPieceBitmaps2[color][piece]);
390 pngPieceBitmaps2[color][piece] = cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
394 // scaled copying of the raw png image
395 cr = cairo_create(cs);
396 w = cairo_image_surface_get_width (img);
397 h = cairo_image_surface_get_height (img);
398 cairo_scale(cr, squareSize/w, squareSize/h);
399 cairo_set_source_surface (cr, img, 0, 0);
403 if(!appData.trueColors || !*appData.pieceDirectory) { // operate on bitmap to color it (king-size hack...)
404 int stride = cairo_image_surface_get_stride(cs)/4;
405 int *buf = (int *) cairo_image_surface_get_data(cs);
407 sscanf(color ? appData.blackPieceColor+1 : appData.whitePieceColor+1, "%x", &p); // replacement color
408 cairo_surface_flush(cs);
409 for(i=0; i<squareSize; i++) for(j=0; j<squareSize; j++) {
412 unsigned int c = buf[i*stride + j];
413 a = c >> 24; r = c >> 16 & 255; // alpha and red, where red is the 'white' weight, since white is #FFFFCC in the source images
414 f = (color ? a - r : r)/255.; // fraction of black or white in the mix that has to be replaced
415 buf[i*stride + j] = c & 0xFF000000; // alpha channel is kept at same opacity
416 buf[i*stride + j] += ((int)(f*(p&0xFF0000)) & 0xFF0000) + ((int)(f*(p&0xFF00)) & 0xFF00) + (int)(f*(p&0xFF)); // add desired fraction of new color
417 if(color) buf[i*stride + j] += r | r << 8 | r << 16; // details on black pieces get their weight added in pure white
418 if(appData.monoMode) {
419 if(a < 64) buf[i*stride + j] = 0; // if not opaque enough, totally transparent
420 else if(2*r < a) buf[i*stride + j] = 0xFF000000; // if not light enough, totally black
421 else buf[i*stride + j] = 0xFFFFFFFF; // otherwise white
424 cairo_surface_mark_dirty(cs);
433 for(p=0; pngPieceNames[p]; p++) {
437 SelectPieces(gameInfo.variant);
441 CreateAnyPieces (int p)
442 { // [HGM] taken out of main
443 if(p) CreatePNGPieces();
444 CreatePNGBoard(appData.liteBackTextureFile, 1);
445 CreatePNGBoard(appData.darkBackTextureFile, 0);
449 InitDrawingParams (int reloadPieces)
453 for(i=0; i<2; i++) for(p=0; p<BlackPawn+4; p++) {
454 if(pngPieceImages[i][p]) cairo_surface_destroy(pngPieceImages[i][p]);
455 pngPieceImages[i][p] = NULL;
456 if(svgPieces[i][p]) rsvg_handle_close(svgPieces[i][p], NULL);
457 svgPieces[i][p] = NULL;
462 // [HGM] seekgraph: some low-level drawing routines (by JC, mostly)
465 Color (char *col, int n)
468 sscanf(col, "#%x", &c);
474 SetPen (cairo_t *cr, float w, char *col, int dash)
476 static const double dotted[] = {4.0, 4.0};
477 static int len = sizeof(dotted) / sizeof(dotted[0]);
478 cairo_set_line_width (cr, w);
479 cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0);
480 if(dash) cairo_set_dash (cr, dotted, len, 0.0);
483 void DrawSeekAxis( int x, int y, int xTo, int yTo )
488 cr = cairo_create (csBoardWindow);
490 cairo_move_to (cr, x, y);
491 cairo_line_to(cr, xTo, yTo );
493 SetPen(cr, 2, "#000000", 0);
498 GraphExpose(currBoard, x-1, yTo-1, xTo-x+2, y-yTo+2);
501 void DrawSeekBackground( int left, int top, int right, int bottom )
503 cairo_t *cr = cairo_create (csBoardWindow);
505 cairo_rectangle (cr, left, top, right-left, bottom-top);
507 cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0);
512 GraphExpose(currBoard, left, top, right-left, bottom-top);
515 void DrawSeekText(char *buf, int x, int y)
517 cairo_t *cr = cairo_create (csBoardWindow);
519 cairo_select_font_face (cr, "Sans",
520 CAIRO_FONT_SLANT_NORMAL,
521 CAIRO_FONT_WEIGHT_NORMAL);
523 cairo_set_font_size (cr, 12.0);
525 cairo_move_to (cr, x, y+4);
526 cairo_set_source_rgba(cr, 0, 0, 0,1.0);
527 cairo_show_text( cr, buf);
531 GraphExpose(currBoard, x-5, y-10, 60, 15);
534 void DrawSeekDot(int x, int y, int colorNr)
536 cairo_t *cr = cairo_create (csBoardWindow);
537 int square = colorNr & 0x80;
541 cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9));
543 cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI);
545 SetPen(cr, 2, "#000000", 0);
546 cairo_stroke_preserve(cr);
548 case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break;
549 case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break;
550 default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break;
556 GraphExpose(currBoard, x-squareSize/8, y-squareSize/8, 2*(squareSize/8), 2*(squareSize/8));
560 InitDrawingHandle (Option *opt)
562 csBoardWindow = DRAWABLE(opt);
570 if (lineGap == 0) return;
572 /* [HR] Split this into 2 loops for non-square boards. */
574 for (i = 0; i < BOARD_HEIGHT + 1; i++) {
575 gridSegments[i].x1 = 0;
577 lineGap + BOARD_WIDTH * (squareSize + lineGap);
578 gridSegments[i].y1 = gridSegments[i].y2
579 = lineGap / 2 + (i * (squareSize + lineGap));
582 for (j = 0; j < BOARD_WIDTH + 1; j++) {
583 gridSegments[j + i].y1 = 0;
584 gridSegments[j + i].y2 =
585 lineGap + BOARD_HEIGHT * (squareSize + lineGap);
586 gridSegments[j + i].x1 = gridSegments[j + i].x2
587 = lineGap / 2 + (j * (squareSize + lineGap));
594 /* draws a grid starting around Nx, Ny squares starting at x,y */
596 float odd = (lineGap & 1)/2.;
600 cr = cairo_create (csBoardWindow);
602 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
603 SetPen(cr, lineGap, "#000000", 0);
606 for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++)
608 int h = (gridSegments[i].y1 == gridSegments[i].y2); // horizontal
609 cairo_move_to (cr, gridSegments[i].x1 + !h*odd, gridSegments[i].y1 + h*odd);
610 cairo_line_to (cr, gridSegments[i].x2 + !h*odd, gridSegments[i].y2 + h*odd);
621 DrawBorder (int x, int y, int type, int odd)
627 case 0: col = "#000000"; break;
628 case 1: col = appData.highlightSquareColor; break;
629 case 2: col = appData.premoveHighlightColor; break;
630 default: col = "#808080"; break; // cannot happen
632 cr = cairo_create(csBoardWindow);
633 cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE);
634 cairo_rectangle(cr, x+odd/2., y+odd/2., squareSize+lineGap, squareSize+lineGap);
635 SetPen(cr, lineGap, col, 0);
638 GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap+odd, squareSize+2*lineGap+odd);
642 CutOutSquare (int x, int y, int *x0, int *y0, int kind)
644 int W = BOARD_WIDTH, H = BOARD_HEIGHT;
645 int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap);
647 if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0;
648 if(textureW[kind] < W*squareSize)
649 *x0 = (textureW[kind] - squareSize) * nx/(W-1);
651 *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W);
652 if(textureH[kind] < H*squareSize)
653 *y0 = (textureH[kind] - squareSize) * ny/(H-1);
655 *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H);
660 DrawLogo (Option *opt, void *logo)
662 cairo_surface_t *img;
667 cr = cairo_create(DRAWABLE(opt));
668 cairo_rectangle (cr, 0, 0, opt->max, opt->value);
669 cairo_set_source_rgba(cr, 0.5, 0.5, 0.5, 1.0);
670 cairo_fill(cr); // paint background in case logo does not exist
672 img = cairo_image_surface_create_from_png (logo);
673 if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
674 w = cairo_image_surface_get_width (img);
675 h = cairo_image_surface_get_height (img);
676 // cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h));
677 cairo_scale(cr, (float)opt->max/w, (float)opt->value/h);
678 cairo_set_source_surface (cr, img, 0, 0);
681 cairo_surface_destroy (img);
684 GraphExpose(opt, 0, 0, opt->max, opt->value);
688 BlankSquare (cairo_surface_t *dest, int x, int y, int color, ChessSquare piece, int fac)
689 { // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer
693 cr = cairo_create (dest);
695 if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) {
696 cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0);
697 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
698 cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize);
701 } else { // evenly colored squares
704 case 0: col = appData.darkSquareColor; break;
705 case 1: col = appData.lightSquareColor; break;
706 case 2: col = "#000000"; break;
707 default: col = "#808080"; break; // cannot happen
709 SetPen(cr, 2.0, col, 0);
710 cairo_rectangle (cr, fac*x, fac*y, squareSize, squareSize);
711 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
718 pngDrawPiece (cairo_surface_t *dest, ChessSquare piece, int square_color, int x, int y)
723 if ((int)piece < (int) BlackPawn) {
729 if(appData.upsideDown && flipView) kind = 1 - kind; // swap white and black pieces
730 BlankSquare(dest, x, y, square_color, piece, 1); // erase previous contents with background
731 cr = cairo_create (dest);
732 cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y);
737 static char *markerColor[8] = { "#FFFF00", "#FF0000", "#00FF00", "#0000FF", "#00FFFF", "#FF00FF", "#FFFFFF", "#000000" };
740 DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
744 cr = cairo_create(cs);
745 cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI);
746 if(appData.monoMode) {
747 SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0);
748 cairo_stroke_preserve(cr);
749 SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0);
751 SetPen(cr, 2, markerColor[marker-1], 0);
759 DrawDot (int marker, int x, int y, int r)
760 { // used for atomic captures; no need to draw on backup
761 DoDrawDot(csBoardWindow, marker, x, y, r);
762 GraphExpose(currBoard, x-r, y-r, 2*r, 2*r);
766 DrawUnicode (cairo_surface_t *canvas, char *string, int x, int y, char id, int flip)
768 // cairo_text_extents_t te;
772 PangoFontDescription *desc;
774 char fontName[MSG_SIZ];
776 cr = cairo_create (canvas);
777 layout = pango_cairo_create_layout(cr);
778 pango_layout_set_text(layout, string, -1);
779 snprintf(fontName, MSG_SIZ, "Sans Normal %dpx", 5*squareSize/8);
780 desc = pango_font_description_from_string(fontName);
781 pango_layout_set_font_description(layout, desc);
782 pango_font_description_free(desc);
783 pango_layout_get_pixel_extents(layout, NULL, &r);
784 cairo_translate(cr, x + squareSize/2 - s*r.width/2, y + (8+s)*squareSize/16 - s*r.height/2);
785 if(s < 0) cairo_rotate(cr, G_PI);
786 cairo_set_source_rgb(cr, (id == '+' ? 1.0 : 0.0), 0.0, 0.0);
787 pango_cairo_update_layout(cr, layout);
788 pango_cairo_show_layout(cr, layout);
789 g_object_unref(layout);
794 DrawText (char *string, int x, int y, int align)
797 cairo_text_extents_t te;
800 cr = cairo_create (csBoardWindow);
801 cairo_select_font_face (cr, "Sans",
802 CAIRO_FONT_SLANT_NORMAL,
803 CAIRO_FONT_WEIGHT_BOLD);
805 cairo_set_font_size (cr, align < 0 ? 2*squareSize/3 : squareSize/4);
806 // calculate where it goes
807 cairo_text_extents (cr, string, &te);
810 xx += squareSize - te.width - te.x_bearing - 1;
811 yy += squareSize - te.height - te.y_bearing - 1;
812 } else if (align == 2) {
813 xx += te.x_bearing + 1, yy += -te.y_bearing + 1;
814 } else if (align == 3) {
815 xx += squareSize - te.width -te.x_bearing - 1;
816 yy += -te.y_bearing + 3;
817 } else if (align == 4) {
818 xx += te.x_bearing + 1, yy += -te.y_bearing + 3;
821 cairo_move_to (cr, xx-1, yy);
822 if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
823 else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
824 cairo_show_text (cr, string);
829 InscribeKanji (cairo_surface_t *canvas, ChessSquare piece, int x, int y)
831 char *p, *q, buf[10];
832 int n, flip = appData.upsideDown && flipView == (piece < BlackPawn);
833 if(piece == EmptySquare) return;
834 if(piece >= BlackPawn) piece = BLACK_TO_WHITE piece;
835 p = appData.inscriptions;
837 while(piece > WhitePawn) {
838 if(*p++ == NULLCHAR) {
839 if(n != WhiteKing) return;
844 while((*p & 0xC0) == 0x80) p++; // skip UTF-8 continuation bytes
848 for(q=buf; (*++q & 0xC0) == 0x80;);
850 DrawUnicode(canvas, buf, x, y, PieceToChar(n), flip);
854 DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *tString, char *bString, int align)
855 { // basic front-end board-draw function: takes care of everything that can be in square:
856 // piece, background, coordinate/count, marker dot
858 if (piece == EmptySquare) {
859 BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
861 pngDrawPiece(csBoardWindow, piece, square_color, x, y);
862 if(appData.inscriptions[0]) InscribeKanji(csBoardWindow, piece, x, y);
865 if(align) { // square carries inscription (coord or piece count)
866 if(align > 1) DrawText(tString, x, y, align); // top (rank or count)
867 if(bString && *bString) DrawText(bString, x, y, 1); // bottom (always lower right file ID)
870 if(marker) { // print fat marker dot, if requested
871 DoDrawDot(csBoardWindow, marker, x + squareSize/4, y+squareSize/4, squareSize/2);
875 /**** Animation code by Hugh Fisher, DCS, ANU. ****/
877 /* Masks for XPM pieces. Black and white pieces can have
878 different shapes, but in the interest of retaining my
879 sanity pieces must have the same outline on both light
880 and dark squares, and all pieces must use the same
881 background square colors/images. */
883 static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
886 InitAnimState (AnimNr anr)
888 if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
889 if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
890 c_animBufs[anr+4] = csBoardWindow;
891 c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
892 c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
899 InitAnimState(Player);
903 CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest)
905 static cairo_t *pieceSource;
906 pieceSource = cairo_create (dest);
907 cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0);
908 if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6);
909 else cairo_paint(pieceSource);
910 cairo_destroy (pieceSource);
911 if(appData.inscriptions[0]) InscribeKanji(dest, piece, 0, 0);
915 InsertPiece (AnimNr anr, ChessSquare piece)
917 CairoOverlayPiece(piece, c_animBufs[anr]);
921 DrawBlank (AnimNr anr, int x, int y, int startColor)
923 BlankSquare(c_animBufs[anr+2], x, y, startColor, EmptySquare, 0);
926 void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
927 int srcX, int srcY, int width, int height, int destX, int destY)
930 c_animBufs[anr+4] = csBoardWindow;
931 cr = cairo_create (c_animBufs[anr+destBuf]);
932 cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY);
933 cairo_rectangle (cr, destX, destY, width, height);
936 if(c_animBufs[anr+destBuf] == csBoardWindow) // suspect that GTK needs this!
937 GraphExpose(currBoard, destX, destY, width, height);
941 SetDragPiece (AnimNr anr, ChessSquare piece)
945 /* [AS] Arrow highlighting support */
948 DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr)
952 cr = cairo_create (cs);
953 cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y);
955 cairo_line_to(cr, arrow[i].x, arrow[i].y);
957 if(appData.monoMode) { // should we always outline arrow?
958 cairo_line_to(cr, arrow[0].x, arrow[0].y);
959 SetPen(cr, 2, "#000000", 0);
960 cairo_stroke_preserve(cr);
962 SetPen(cr, 2, appData.highlightSquareColor, 0);
970 DrawPolygon (Pnt arrow[], int nr)
972 DoDrawPolygon(csBoardWindow, arrow, nr);
973 // if(!dual) DoDrawPolygon(csBoardBackup, arrow, nr);
976 //-------------------- Eval Graph drawing routines (formerly in xevalgraph.h) --------------------
979 ChoosePen(cairo_t *cr, int i)
983 SetPen(cr, 1.0, "#000000", 0);
986 SetPen(cr, 1.0, "#A0A0A0", 1);
989 SetPen(cr, 1.0, "#0000FF", 1);
992 SetPen(cr, 3.0, crWhite, 0);
995 SetPen(cr, 3.0, crBlack, 0);
998 SetPen(cr, 3.0, "#E0E0F0", 0);
1003 // [HGM] front-end, added as wrapper to avoid use of LineTo and MoveToEx in other routines (so they can be back-end)
1005 DrawSegment (int x, int y, int *lastX, int *lastY, int penType)
1007 static int curX, curY;
1009 if(penType != PEN_NONE) {
1010 cairo_t *cr = cairo_create(DRAWABLE(disp));
1011 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
1012 cairo_move_to (cr, curX, curY);
1013 cairo_line_to (cr, x,y);
1014 ChoosePen(cr, penType);
1019 if(lastX != NULL) { *lastX = curX; *lastY = curY; }
1023 // front-end wrapper for drawing functions to do rectangles
1025 DrawRectangle (int left, int top, int right, int bottom, int side, int style)
1029 cr = cairo_create (DRAWABLE(disp));
1030 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
1031 cairo_rectangle (cr, left, top, right-left, bottom-top);
1034 case 0: ChoosePen(cr, PEN_BOLDWHITE); break;
1035 case 1: ChoosePen(cr, PEN_BOLDBLACK); break;
1036 case 2: ChoosePen(cr, PEN_BACKGD); break;
1042 cairo_rectangle (cr, left, top, right-left-1, bottom-top-1);
1043 ChoosePen(cr, PEN_BLACK);
1050 // front-end wrapper for putting text in graph
1052 DrawEvalText (char *buf, int cbBuf, int y)
1054 // the magic constants 8 and 5 should really be derived from the font size somehow
1055 cairo_text_extents_t extents;
1056 cairo_t *cr = cairo_create(DRAWABLE(disp));
1058 /* GTK-TODO this has to go into the font-selection */
1059 cairo_select_font_face (cr, "Sans",
1060 CAIRO_FONT_SLANT_NORMAL,
1061 CAIRO_FONT_WEIGHT_NORMAL);
1062 cairo_set_font_size (cr, 12.0);
1065 cairo_text_extents (cr, buf, &extents);
1067 cairo_move_to (cr, MarginX - 2 - 8*cbBuf, y+5);
1068 cairo_text_path (cr, buf);
1069 cairo_set_source_rgb (cr, 0.0, 0.0, 0);
1070 cairo_fill_preserve (cr);
1071 cairo_set_source_rgb (cr, 0, 1.0, 0);
1072 cairo_set_line_width (cr, 0.1);