From ef69c417ccc6498ba0c13591b4deaa34a9a76ba1 Mon Sep 17 00:00:00 2001 From: H.G. Muller Date: Sat, 6 Oct 2012 11:37:20 +0200 Subject: [PATCH] Check in draw.c, draw.h --- draw.c | 797 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ draw.h | 73 ++++++ 2 files changed, 870 insertions(+), 0 deletions(-) create mode 100644 draw.c create mode 100644 draw.h diff --git a/draw.c b/draw.c new file mode 100644 index 0000000..0b63833 --- /dev/null +++ b/draw.c @@ -0,0 +1,797 @@ +/* + * draw.c -- drawing routines for XBoard + * + * Copyright 1991 by Digital Equipment Corporation, Maynard, + * Massachusetts. + * + * Enhancements Copyright 1992-2001, 2002, 2003, 2004, 2005, 2006, + * 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc. + * + * The following terms apply to Digital Equipment Corporation's copyright + * interest in XBoard: + * ------------------------------------------------------------------------ + * All Rights Reserved + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, + * provided that the above copyright notice appear in all copies and that + * both that copyright notice and this permission notice appear in + * supporting documentation, and that the name of Digital not be + * used in advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * + * DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING + * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL + * DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR + * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, + * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, + * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + * ------------------------------------------------------------------------ + * + * The following terms apply to the enhanced version of XBoard + * distributed by the Free Software Foundation: + * ------------------------------------------------------------------------ + * + * GNU XBoard is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or (at + * your option) any later version. + * + * GNU XBoard is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see http://www.gnu.org/licenses/. * + * + *------------------------------------------------------------------------ + ** See the file ChangeLog for a revision history. */ + +#include "config.h" + +#include +#include +#include +#include + +#if STDC_HEADERS +# include +# include +#else /* not STDC_HEADERS */ +extern char *getenv(); +# if HAVE_STRING_H +# include +# else /* not HAVE_STRING_H */ +# include +# endif /* not HAVE_STRING_H */ +#endif /* not STDC_HEADERS */ + +#if ENABLE_NLS +#include +#endif + + +// [HGM] bitmaps: put before incuding the bitmaps / pixmaps, to know how many piece types there are. +#include "common.h" + +#if HAVE_LIBXPM +#include "pixmaps/pixmaps.h" +#else +#include "bitmaps/bitmaps.h" +#endif + +#include "frontend.h" +#include "backend.h" +#include "xboard.h" +#include "xevalgraph.h" +#include "board.h" +#include "menus.h" +#include "dialogs.h" +#include "gettext.h" +#include "draw.h" + + +#ifdef __EMX__ +#ifndef HAVE_USLEEP +#define HAVE_USLEEP +#endif +#define usleep(t) _sleep2(((t)+500)/1000) +#endif + +#ifdef ENABLE_NLS +# define _(s) gettext (s) +# define N_(s) gettext_noop (s) +#else +# define _(s) (s) +# define N_(s) s +#endif + +#define SOLID 0 +#define OUTLINE 1 +Boolean cairoAnimate; +static cairo_surface_t *csBoardWindow, *csBoardBackup, *csDualBoard; +static cairo_surface_t *pngPieceBitmaps[2][(int)BlackPawn]; // scaled pieces as used +static cairo_surface_t *pngPieceBitmaps2[2][(int)BlackPawn+4]; // scaled pieces in store +static cairo_surface_t *pngBoardBitmap[2]; +int useTexture, textureW[2], textureH[2]; + +#define pieceToSolid(piece) &pieceBitmap[SOLID][(piece) % (int)BlackPawn] +#define pieceToOutline(piece) &pieceBitmap[OUTLINE][(piece) % (int)BlackPawn] + +#define White(piece) ((int)(piece) < (int)BlackPawn) + +struct { + int x1, x2, y1, y2; +} gridSegments[BOARD_RANKS + BOARD_FILES + 2]; + +void +SwitchWindow () +{ + cairo_surface_t *cstmp = csBoardWindow; + csBoardWindow = csDualBoard; + if(!csDualBoard && cstmp) { + int boardWidth = lineGap + BOARD_WIDTH * (squareSize + lineGap); + int boardHeight = lineGap + BOARD_HEIGHT * (squareSize + lineGap); + csBoardWindow = cairo_xlib_surface_create(xDisplay, xBoardWindow, DefaultVisual(xDisplay, 0), boardWidth, boardHeight); + } +} + +void +NewSurfaces () +{ + // delete surfaces after size becomes invalid, so they will be recreated + if(csBoardWindow) cairo_surface_destroy(csBoardWindow); + if(csBoardBackup) cairo_surface_destroy(csBoardBackup); + if(csDualBoard) cairo_surface_destroy(csDualBoard); + csBoardWindow = csBoardBackup = csDualBoard = NULL; +} + +#define BoardSize int +void +InitDrawingSizes (BoardSize boardSize, int flags) +{ // [HGM] resize is functional now, but for board format changes only (nr of ranks, files) + int boardWidth, boardHeight; + int i; + static Dimension oldWidth, oldHeight; + static VariantClass oldVariant; + static int oldMono = -1, oldTwoBoards = 0; + + if(!formWidget) return; + + if(oldTwoBoards && !twoBoards) PopDown(DummyDlg); + oldTwoBoards = twoBoards; + + if(appData.overrideLineGap >= 0) lineGap = appData.overrideLineGap; + boardWidth = lineGap + BOARD_WIDTH * (squareSize + lineGap); + boardHeight = lineGap + BOARD_HEIGHT * (squareSize + lineGap); + + if(boardWidth != oldWidth || boardHeight != oldHeight) { // do resizing stuff only if size actually changed + + oldWidth = boardWidth; oldHeight = boardHeight; + CreateGrid(); + NewSurfaces(); + + /* + * Inhibit shell resizing. + */ + ResizeBoardWindow(boardWidth, boardHeight, !cairoAnimate); + + DelayedDrag(); + } + + // [HGM] pieces: tailor piece bitmaps to needs of specific variant + // (only for xpm) + + if(gameInfo.variant != oldVariant) { // and only if variant changed + + for(i=0; i<2; i++) { + int p; + for(p=0; p<=(int)WhiteKing; p++) + pngPieceBitmaps[i][p] = pngPieceBitmaps2[i][p]; // defaults + if(gameInfo.variant == VariantShogi) { + pngPieceBitmaps[i][(int)WhiteCannon] = pngPieceBitmaps2[i][(int)WhiteKing+1]; + pngPieceBitmaps[i][(int)WhiteNightrider] = pngPieceBitmaps2[i][(int)WhiteKing+2]; + pngPieceBitmaps[i][(int)WhiteSilver] = pngPieceBitmaps2[i][(int)WhiteKing+3]; + pngPieceBitmaps[i][(int)WhiteGrasshopper] = pngPieceBitmaps2[i][(int)WhiteKing+4]; + pngPieceBitmaps[i][(int)WhiteQueen] = pngPieceBitmaps2[i][(int)WhiteLance]; + } +#ifdef GOTHIC + if(gameInfo.variant == VariantGothic) { + pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteSilver]; + } +#endif + if(gameInfo.variant == VariantSChess) { + pngPieceBitmaps[i][(int)WhiteAngel] = pngPieceBitmaps2[i][(int)WhiteFalcon]; + pngPieceBitmaps[i][(int)WhiteMarshall] = pngPieceBitmaps2[i][(int)WhiteAlfil]; + } + } + oldMono = -10; // kludge to force recreation of animation masks + oldVariant = gameInfo.variant; + } + CreateAnimVars(); + oldMono = appData.monoMode; +} + +static void +CreatePNGBoard (char *s, int kind) +{ + if(!appData.useBitmaps || s == NULL || *s == 0 || *s == '*') { useTexture &= ~(kind+1); return; } + if(strstr(s, ".png")) { + cairo_surface_t *img = cairo_image_surface_create_from_png (s); + if(img) { + useTexture |= kind + 1; pngBoardBitmap[kind] = img; + textureW[kind] = cairo_image_surface_get_width (img); + textureH[kind] = cairo_image_surface_get_height (img); + } + } +} + +char *pngPieceNames[] = // must be in same order as internal piece encoding +{ "Pawn", "Knight", "Bishop", "Rook", "Queen", "Advisor", "Elephant", "Archbishop", "Marshall", "Gold", "Commoner", + "Canon", "Nightrider", "CrownedBishop", "CrownedRook", "Princess", "Chancellor", "Hawk", "Lance", "Cobra", "Unicorn", "King", + "GoldKnight", "GoldLance", "GoldPawn", "GoldSilver", NULL +}; + +static void +ScaleOnePiece (char *name, int color, int piece) +{ + int w, h; + char buf[MSG_SIZ]; + cairo_surface_t *img, *cs; + cairo_t *cr; + static cairo_surface_t *pngPieceImages[2][(int)BlackPawn+4]; // png 256 x 256 images + + if((img = pngPieceImages[color][piece]) == NULL) { // if PNG file for this piece was not yet read, read it now and store it + snprintf(buf, MSG_SIZ, "%s/%s%s.png", appData.pngDirectory, color ? "Black" : "White", pngPieceNames[piece]); + pngPieceImages[color][piece] = img = cairo_image_surface_create_from_png (buf); + w = cairo_image_surface_get_width (img); + h = cairo_image_surface_get_height (img); + if(w != 64 || h != 64) { printf("Bad png size %dx%d in %s\n", w, h, buf); exit(1); } + } + // create new bitmap to hold scaled piece image (and remove any old) + if(pngPieceBitmaps2[color][piece]) cairo_surface_destroy (pngPieceBitmaps2[color][piece]); + pngPieceBitmaps2[color][piece] = cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize); + if(piece <= WhiteKing) pngPieceBitmaps[color][piece] = cs; + // scaled copying of the raw png image + cr = cairo_create(cs); + cairo_scale(cr, squareSize/64., squareSize/64.); + cairo_set_source_surface (cr, img, 0, 0); + cairo_paint (cr); + cairo_destroy (cr); +} + +void +CreatePNGPieces () +{ + int p; + + for(p=0; pngPieceNames[p]; p++) { + ScaleOnePiece(pngPieceNames[p], 0, p); + ScaleOnePiece(pngPieceNames[p], 1, p); + } +} + +int +CreateAnyPieces () +{ // [HGM] taken out of main + if (appData.pngDirectory[0] != NULLCHAR) { + CreatePNGPieces(); + } + CreatePNGBoard(appData.liteBackTextureFile, 1); + CreatePNGBoard(appData.darkBackTextureFile, 0); + cairoAnimate = *appData.pngDirectory && useTexture == 3 + && strstr(appData.liteBackTextureFile, ".png") && strstr(appData.darkBackTextureFile, ".png"); + return cairoAnimate; +} + +void +InitDrawingParams () +{ + MakeColors(); + CreateAnyPieces(); +} + +// [HGM] seekgraph: some low-level drawing routines (by JC, mostly) + +float +Color (char *col, int n) +{ + int c; + sscanf(col, "#%x", &c); + c = c >> 4*n & 255; + return c/255.; +} + +void +SetPen (cairo_t *cr, float w, char *col, int dash) +{ + static const double dotted[] = {4.0, 4.0}; + static int len = sizeof(dotted) / sizeof(dotted[0]); + cairo_set_line_width (cr, w); + cairo_set_source_rgba (cr, Color(col, 4), Color(col, 2), Color(col, 0), 1.0); + if(dash) cairo_set_dash (cr, dotted, len, 0.0); +} + +void DrawSeekAxis( int x, int y, int xTo, int yTo ) +{ + cairo_t *cr; + + /* get a cairo_t */ + cr = cairo_create (csBoardWindow); + + cairo_move_to (cr, x, y); + cairo_line_to(cr, xTo, yTo ); + + SetPen(cr, 2, "#000000", 0); + cairo_stroke(cr); + + /* free memory */ + cairo_destroy (cr); +} + +void DrawSeekBackground( int left, int top, int right, int bottom ) +{ + cairo_t *cr = cairo_create (csBoardWindow); + + cairo_rectangle (cr, left, top, right-left, bottom-top); + + cairo_set_source_rgba(cr, 0.8, 0.8, 0.4,1.0); + cairo_fill(cr); + + /* free memory */ + cairo_destroy (cr); +} + +void DrawSeekText(char *buf, int x, int y) +{ + cairo_t *cr = cairo_create (csBoardWindow); + + cairo_select_font_face (cr, "Sans", + CAIRO_FONT_SLANT_NORMAL, + CAIRO_FONT_WEIGHT_NORMAL); + + cairo_set_font_size (cr, 12.0); + + cairo_move_to (cr, x, y+4); + cairo_set_source_rgba(cr, 0, 0, 0,1.0); + cairo_show_text( cr, buf); + + /* free memory */ + cairo_destroy (cr); +} + +void DrawSeekDot(int x, int y, int colorNr) +{ + cairo_t *cr = cairo_create (csBoardWindow); + int square = colorNr & 0x80; + colorNr &= 0x7F; + + if(square) + cairo_rectangle (cr, x-squareSize/9, y-squareSize/9, 2*(squareSize/9), 2*(squareSize/9)); + else + cairo_arc(cr, x, y, squareSize/9, 0.0, 2*M_PI); + + SetPen(cr, 2, "#000000", 0); + cairo_stroke_preserve(cr); + switch (colorNr) { + case 0: cairo_set_source_rgba(cr, 1.0, 0, 0,1.0); break; + case 1: cairo_set_source_rgba (cr, 0.0, 0.7, 0.2, 1.0); break; + default: cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); break; + } + cairo_fill(cr); + + /* free memory */ + cairo_destroy (cr); +} + +void +DrawSeekOpen () +{ + int boardWidth = lineGap + BOARD_WIDTH * (squareSize + lineGap); + int boardHeight = lineGap + BOARD_HEIGHT * (squareSize + lineGap); + if(!csBoardWindow) { + csBoardWindow = cairo_xlib_surface_create(xDisplay, xBoardWindow, DefaultVisual(xDisplay, 0), boardWidth, boardHeight); + csBoardBackup = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, boardWidth, boardHeight); + } +} + +void +DrawSeekClose () +{ +} + +void +CreateGrid () +{ + int i, j; + + if (lineGap == 0) return; + + /* [HR] Split this into 2 loops for non-square boards. */ + + for (i = 0; i < BOARD_HEIGHT + 1; i++) { + gridSegments[i].x1 = 0; + gridSegments[i].x2 = + lineGap + BOARD_WIDTH * (squareSize + lineGap); + gridSegments[i].y1 = gridSegments[i].y2 + = lineGap / 2 + (i * (squareSize + lineGap)); + } + + for (j = 0; j < BOARD_WIDTH + 1; j++) { + gridSegments[j + i].y1 = 0; + gridSegments[j + i].y2 = + lineGap + BOARD_HEIGHT * (squareSize + lineGap); + gridSegments[j + i].x1 = gridSegments[j + i].x2 + = lineGap / 2 + (j * (squareSize + lineGap)); + } +} + +void +DoDrawGrid(cairo_surface_t *cs) +{ + /* draws a grid starting around Nx, Ny squares starting at x,y */ + int i; + cairo_t *cr; + + DrawSeekOpen(); + /* get a cairo_t */ + cr = cairo_create (cs); + + cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE); + SetPen(cr, lineGap, "#000000", 0); + + /* lines in X */ + for (i = 0; i < BOARD_WIDTH + BOARD_HEIGHT + 2; i++) + { + cairo_move_to (cr, gridSegments[i].x1, gridSegments[i].y1); + cairo_line_to (cr, gridSegments[i].x2, gridSegments[i].y2); + cairo_stroke (cr); + } + + /* free memory */ + cairo_destroy (cr); + + return; +} + +void +DrawGrid() +{ + DoDrawGrid(csBoardWindow); + DoDrawGrid(csBoardBackup); +} + +void +DoDrawBorder (cairo_surface_t *cs, int x, int y, int type) +{ + cairo_t *cr; + DrawSeekOpen(); + char *col; + + switch(type) { + case 0: col = "#000000"; break; + case 1: col = appData.highlightSquareColor; break; + case 2: col = appData.premoveHighlightColor; break; + } + cr = cairo_create(cs); + cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE); + cairo_rectangle(cr, x, y, squareSize+lineGap, squareSize+lineGap); + SetPen(cr, lineGap, col, 0); + cairo_stroke(cr); +} + +void +DrawBorder (int x, int y, int type) +{ + DoDrawBorder(csBoardWindow, x, y, type); + DoDrawBorder(csBoardBackup, x, y, type); +} + +static int +CutOutSquare (int x, int y, int *x0, int *y0, int kind) +{ + int W = BOARD_WIDTH, H = BOARD_HEIGHT; + int nx = x/(squareSize + lineGap), ny = y/(squareSize + lineGap); + *x0 = 0; *y0 = 0; + if(textureW[kind] < squareSize || textureH[kind] < squareSize) return 0; + if(textureW[kind] < W*squareSize) + *x0 = (textureW[kind] - squareSize) * nx/(W-1); + else + *x0 = textureW[kind]*nx / W + (textureW[kind] - W*squareSize) / (2*W); + if(textureH[kind] < H*squareSize) + *y0 = (textureH[kind] - squareSize) * ny/(H-1); + else + *y0 = textureH[kind]*ny / H + (textureH[kind] - H*squareSize) / (2*H); + return 1; +} + +void +DrawLogo (void *handle, void *logo) +{ + cairo_surface_t *img, *cs; + cairo_t *cr; + int w, h; + + if(!logo || !handle) return; + cs = cairo_xlib_surface_create(xDisplay, XtWindow(handle), DefaultVisual(xDisplay, 0), appData.logoSize, appData.logoSize/2); + img = cairo_image_surface_create_from_png (logo); + w = cairo_image_surface_get_width (img); + h = cairo_image_surface_get_height (img); + cr = cairo_create(cs); + cairo_scale(cr, (float)appData.logoSize/w, appData.logoSize/(2.*h)); + cairo_set_source_surface (cr, img, 0, 0); + cairo_paint (cr); + cairo_destroy (cr); + cairo_surface_destroy (img); + cairo_surface_destroy (cs); +} + +static void +BlankSquare (int x, int y, int color, ChessSquare piece, cairo_surface_t *dest, int fac) +{ // [HGM] extra param 'fac' for forcing destination to (0,0) for copying to animation buffer + int x0, y0; + cairo_t *cr; + + DrawSeekOpen(); + cr = cairo_create (fac ? csBoardWindow : dest); + + if ((useTexture & color+1) && CutOutSquare(x, y, &x0, &y0, color)) { + cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0); + cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE); + cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize); + cairo_fill (cr); + cairo_destroy (cr); + if(fac) { + cr = cairo_create (csBoardBackup); + cairo_set_source_surface (cr, pngBoardBitmap[color], x*fac - x0, y*fac - y0); + cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE); + cairo_rectangle (cr, x*fac, y*fac, squareSize, squareSize); + cairo_fill (cr); + cairo_destroy (cr); + } + } else { // evenly colored squares + char *col; + switch (color) { + case 0: col = appData.darkSquareColor; break; + case 1: col = appData.lightSquareColor; break; + case 2: col = "#000000"; break; + } + SetPen(cr, 2.0, col, 0); + cairo_rectangle (cr, x, y, squareSize, squareSize); + cairo_fill (cr); + cairo_destroy (cr); + if(fac) { + cr = cairo_create (csBoardBackup); + SetPen(cr, 2.0, col, 0); + cairo_rectangle (cr, x, y, squareSize, squareSize); + cairo_fill (cr); + cairo_destroy (cr); + } + } +} + +static void +pngDrawPiece (ChessSquare piece, int square_color, int x, int y, cairo_surface_t *dest) +{ + int kind, p = piece; + cairo_t *cr; + + if ((int)piece < (int) BlackPawn) { + kind = 0; + } else { + kind = 1; + piece -= BlackPawn; + } + if(appData.upsideDown && flipView) { p += p < BlackPawn ? BlackPawn : -BlackPawn; }// swap white and black pieces + BlankSquare(x, y, square_color, piece, dest, 1); // erase previous contents with background + DrawSeekOpen(); + cr = cairo_create (csBoardWindow); + cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y); + cairo_paint(cr); + cairo_destroy (cr); + cr = cairo_create (csBoardBackup); + cairo_set_source_surface (cr, pngPieceBitmaps[kind][piece], x, y); + cairo_paint(cr); + cairo_destroy (cr); +} + +void +DoDrawDot (int marker, int x, int y, int r, cairo_surface_t *cs) +{ + cairo_t *cr; + DrawSeekOpen(); + cr = cairo_create(cs); + cairo_arc(cr, x+r/2, y+r/2, r/2, 0.0, 2*M_PI); + if(appData.monoMode) { + SetPen(cr, 2, marker == 2 ? "#000000" : "#FFFFFF", 0); + cairo_stroke_preserve(cr); + SetPen(cr, 2, marker == 2 ? "#FFFFFF" : "#000000", 0); + } else { + SetPen(cr, 2, marker == 2 ? "#FF0000" : "#FFFF00", 0); + } + cairo_fill(cr); + cairo_stroke(cr); + + cairo_destroy(cr); +} + +void +DrawDot (int marker, int x, int y, int r) +{ + DoDrawDot(marker, x, y, r, csBoardWindow); + DoDrawDot(marker, x, y, r, csBoardBackup); +} + +void +DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, char *string, int align) +{ // basic front-end board-draw function: takes care of everything that can be in square: + // piece, background, coordinate/count, marker dot + int direction, font_ascent, font_descent; + XCharStruct overall; + cairo_t *cr; + + if (piece == EmptySquare) { + BlankSquare(x, y, square_color, piece, csBoardWindow, 1); + } else { + pngDrawPiece(piece, square_color, x, y, csBoardWindow); + } + + if(align) { // square carries inscription (coord or piece count) + int xx = x, yy = y; + // first calculate where it goes + XTextExtents(countFontStruct, string, 1, &direction, + &font_ascent, &font_descent, &overall); + if (align == 1) { + xx += squareSize - overall.width - 2; + yy += squareSize - font_descent - 1; + } else if (align == 2) { + xx += 2, yy += font_ascent + 1; + } else if (align == 3) { + xx += squareSize - overall.width - 2; + yy += font_ascent + 1; + } else if (align == 4) { + xx += 2, yy += font_ascent + 1; + } + cr = cairo_create (csBoardWindow); + cairo_select_font_face (cr, "Sans", + CAIRO_FONT_SLANT_NORMAL, + CAIRO_FONT_WEIGHT_BOLD); + + cairo_set_font_size (cr, squareSize/4); + + cairo_move_to (cr, xx-1, yy); + if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); + else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); + cairo_show_text (cr, string); + cairo_destroy (cr); + + cr = cairo_create (csBoardBackup); + cairo_select_font_face (cr, "Sans", + CAIRO_FONT_SLANT_NORMAL, + CAIRO_FONT_WEIGHT_BOLD); + + cairo_set_font_size (cr, squareSize/4); + + cairo_move_to (cr, xx-1, yy); + if(align < 3) cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); + else cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); + cairo_show_text (cr, string); + cairo_destroy (cr); + } + + if(marker) { // print fat marker dot, if requested + DrawDot(marker, x + squareSize/4, y+squareSize/4, squareSize/2); + } +} + +/**** Animation code by Hugh Fisher, DCS, ANU. ****/ + +/* Masks for XPM pieces. Black and white pieces can have + different shapes, but in the interest of retaining my + sanity pieces must have the same outline on both light + and dark squares, and all pieces must use the same + background square colors/images. */ + +static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf + +static void +InitAnimState (AnimNr anr) +{ + DrawSeekOpen(); // set cs to board widget + if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]); + if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]); + c_animBufs[anr+4] = csBoardWindow; + c_animBufs[anr+2] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize); + c_animBufs[anr] = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize); +} + +void +CreateAnimVars () +{ + InitAnimState(Game); + InitAnimState(Player); +} + +static void +CairoOverlayPiece (ChessSquare piece, cairo_surface_t *dest) +{ + static cairo_t *pieceSource; + pieceSource = cairo_create (dest); + cairo_set_source_surface (pieceSource, pngPieceBitmaps[!White(piece)][piece % BlackPawn], 0, 0); + if(doubleClick) cairo_paint_with_alpha (pieceSource, 0.6); + else cairo_paint(pieceSource); + cairo_destroy (pieceSource); +} + +void +InsertPiece (AnimNr anr, ChessSquare piece) +{ + CairoOverlayPiece(piece, c_animBufs[anr]); +} + +void +DrawBlank (AnimNr anr, int x, int y, int startColor) +{ + BlankSquare(x, y, startColor, EmptySquare, c_animBufs[anr+2], 0); +} + +void CopyRectangle (AnimNr anr, int srcBuf, int destBuf, + int srcX, int srcY, int width, int height, int destX, int destY) +{ + cairo_t *cr;// = cairo_create (c_animBufs[anr+destBuf]); + cr = cairo_create (c_animBufs[anr+destBuf]); + if(c_animBufs[anr+srcBuf] == csBoardWindow) + cairo_set_source_surface (cr, csBoardBackup, destX - srcX, destY - srcY); + else + cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY); + cairo_rectangle (cr, destX, destY, width, height); + cairo_fill (cr); + cairo_destroy (cr); + if(c_animBufs[anr+destBuf] == csBoardWindow) { + cr = cairo_create (csBoardBackup); // also draw to backup + cairo_set_source_surface (cr, c_animBufs[anr+srcBuf], destX - srcX, destY - srcY); + cairo_rectangle (cr, destX, destY, width, height); + cairo_fill (cr); + cairo_destroy (cr); + } +} + +void +SetDragPiece (AnimNr anr, ChessSquare piece) +{ +} + +/* [AS] Arrow highlighting support */ + +void +DoDrawPolygon (cairo_surface_t *cs, Pnt arrow[], int nr) +{ + cairo_t *cr; + int i; + cr = cairo_create (cs); + cairo_move_to (cr, arrow[nr-1].x, arrow[nr-1].y); + for (i=0;i