--- /dev/null
+/*
+ * 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 <stdio.h>
+#include <math.h>
+#include <cairo/cairo.h>
+#include <cairo/cairo-xlib.h>
+
+#if STDC_HEADERS
+# include <stdlib.h>
+# include <string.h>
+#else /* not STDC_HEADERS */
+extern char *getenv();
+# if HAVE_STRING_H
+# include <string.h>
+# else /* not HAVE_STRING_H */
+# include <strings.h>
+# endif /* not HAVE_STRING_H */
+#endif /* not STDC_HEADERS */
+
+#if ENABLE_NLS
+#include <locale.h>
+#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<nr;i++) {
+ cairo_line_to(cr, arrow[i].x, arrow[i].y);
+ }
+ if(appData.monoMode) { // should we always outline arrow?
+ cairo_line_to(cr, arrow[0].x, arrow[0].y);
+ SetPen(cr, 2, "#000000", 0);
+ cairo_stroke_preserve(cr);
+ }
+ SetPen(cr, 2, appData.highlightSquareColor, 0);
+ cairo_fill(cr);
+
+ /* free memory */
+ cairo_destroy (cr);
+}
+
+void
+DrawPolygon (Pnt arrow[], int nr)
+{
+ DoDrawPolygon(csBoardWindow, arrow, nr);
+ DoDrawPolygon(csBoardBackup, arrow, nr);
+}
+
+
projects / xboard.git / commitdiff