/*
DroidFish - An Android chess program.
Copyright (C) 2011 Peter Österlund, peterosterlund2@gmail.com
This program 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.
This program 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/>.
*/
package com.if3games.chessonline.activities;
import com.if3games.chessonline.ChessBoard;
import com.if3games.chessonline.gamelogic.Move;
import com.if3games.chessonline.gamelogic.Piece;
import com.if3games.chessonline.gamelogic.Position;
import android.content.Context;
import android.content.res.Configuration;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.view.MotionEvent;
/** Chess board widget suitable for edit mode. */
public class ChessBoardEdit extends ChessBoard {
private final boolean landScape;
public ChessBoardEdit(Context context, AttributeSet attrs) {
super(context, attrs);
drawSquareLabels = true;
Configuration config = getResources().getConfiguration();
landScape = (config.orientation == Configuration.ORIENTATION_LANDSCAPE);
}
private final static int gap = 4;
@Override
protected int getWidth(int sqSize) {
return landScape ? sqSize * 10 + gap : sqSize * 8;
}
@Override
protected int getHeight(int sqSize) {
return landScape ? sqSize * 8 : sqSize * 10 + gap;
}
@Override
protected int getSqSizeW(int width) {
return landScape ? (width - gap) / 10 : width / 8;
}
@Override
protected int getSqSizeH(int height) {
return landScape ? height / 8 : (height - gap) / 10;
}
@Override
protected int getMaxHeightPercentage() { return 85; }
@Override
protected int getMaxWidthPercentage() { return 75; }
@Override
protected void computeOrigin(int width, int height) {
x0 = (width - getWidth(sqSize)) / 2;
y0 = landScape ? 0 : (height - getHeight(sqSize)) / 2;
}
private final int extraPieces(int x, int y) {
if (landScape) {
if (x == 8) {
switch (y) {
case 0: return Piece.WKING;
case 1: return Piece.WQUEEN;
case 2: return Piece.WROOK;
case 3: return Piece.WBISHOP;
case 4: return Piece.WKNIGHT;
case 5: return Piece.WPAWN;
}
} else if (x == 9) {
switch (y) {
case 0: return Piece.BKING;
case 1: return Piece.BQUEEN;
case 2: return Piece.BROOK;
case 3: return Piece.BBISHOP;
case 4: return Piece.BKNIGHT;
case 5: return Piece.BPAWN;
}
}
} else {
if (y == -1) {
switch (x) {
case 0: return Piece.WKING;
case 1: return Piece.WQUEEN;
case 2: return Piece.WROOK;
case 3: return Piece.WBISHOP;
case 4: return Piece.WKNIGHT;
case 5: return Piece.WPAWN;
}
} else if (y == -2) {
switch (x) {
case 0: return Piece.BKING;
case 1: return Piece.BQUEEN;
case 2: return Piece.BROOK;
case 3: return Piece.BBISHOP;
case 4: return Piece.BKNIGHT;
case 5: return Piece.BPAWN;
}
}
}
return Piece.EMPTY;
}
@Override
protected int getXFromSq(int sq) {
if (sq >= 0) {
return Position.getX(sq);
} else {
int p = -2 - sq;
if (landScape) {
return Piece.isWhite(p) ? 8 : 9;
} else {
switch (p) {
case Piece.WKING: case Piece.BKING: return 0;
case Piece.WQUEEN: case Piece.BQUEEN: return 1;
case Piece.WROOK: case Piece.BROOK: return 2;
case Piece.WBISHOP: case Piece.BBISHOP: return 3;
case Piece.WKNIGHT: case Piece.BKNIGHT: return 4;
case Piece.WPAWN: case Piece.BPAWN: return 5;
default: return 6;
}
}
}
}
@Override
protected int getYFromSq(int sq) {
if (sq >= 0) {
return Position.getY(sq);
} else {
int p = -2 - sq;
if (landScape) {
switch (p) {
case Piece.WKING: case Piece.BKING: return 0;
case Piece.WQUEEN: case Piece.BQUEEN: return 1;
case Piece.WROOK: case Piece.BROOK: return 2;
case Piece.WBISHOP: case Piece.BBISHOP: return 3;
case Piece.WKNIGHT: case Piece.BKNIGHT: return 4;
case Piece.WPAWN: case Piece.BPAWN: return 5;
default: return 6;
}
} else {
return Piece.isWhite(p) ? -1 : -2;
}
}
}
@Override
protected int getSquare(int x, int y) {
if ((y >= 0) && (x < 8)) {
return Position.getSquare(x, y);
} else {
int p = extraPieces(x, y);
return -p - 2;
}
}
@Override
protected void drawExtraSquares(Canvas canvas) {
int xMin = landScape ? 8 : 0;
int xMax = landScape ? 10 : 8;
int yMin = landScape ? 0 : -2;
int yMax = landScape ? 8 : 0;
for (int x = xMin; x < xMax; x++) {
for (int y = yMin; y < yMax; y++) {
final int xCrd = getXCrd(x);
final int yCrd = getYCrd(y);
Paint paint = Position.darkSquare(x, y) ? darkPaint : brightPaint;
canvas.drawRect(xCrd, yCrd, xCrd+sqSize, yCrd+sqSize, paint);
int p = extraPieces(x, y);
drawPiece(canvas, xCrd, yCrd, p);
}
}
}
@Override
public
Move mousePressed(int sq) {
if (sq == -1)
return null;
cursorVisible = false;
if (selectedSquare != -1) {
if (sq != selectedSquare) {
Move m = new Move(selectedSquare, sq, Piece.EMPTY);
setSelection(sq);
return m;
}
setSelection(-1);
} else {
setSelection(sq);
}
return null;
}
@Override
protected int minValidY() {
return landScape ? 0 : -2;
}
@Override
protected int maxValidX() {
return landScape ? 9 : 7;
}
@Override
protected int getXCrd(int x) {
return x0 + sqSize * x + ((x >= 8) ? gap : 0);
}
@Override
protected int getYCrd(int y) {
return y0 + sqSize * (7 - y) + ((y < 0) ? gap : 0);
}
@Override
protected int getXSq(int xCrd) {
int x = (xCrd - x0) / sqSize;
if (x < 8)
return x;
return (xCrd - x0 - gap) / sqSize;
}
@Override
protected int getYSq(int yCrd) {
int y = 7 - (yCrd - y0) / sqSize;
if (y >= 0)
return y;
return 7 - (yCrd - y0 - gap) / sqSize;
}
/**
* Compute the square corresponding to the coordinates of a mouse event.
* @param evt Details about the mouse event.
* @return The square corresponding to the mouse event, or -1 if outside board.
*/
@Override
public int eventToSquare(MotionEvent evt) {
int sq = super.eventToSquare(evt);
if (sq != -1)
return sq;
int xCrd = (int)(evt.getX());
int yCrd = (int)(evt.getY());
if (sqSize > 0) {
int x = getXSq(xCrd);
int y = getYSq(yCrd);
if ( landScape && (x >= 0) && (x < 10) && (y >= 0) && (y < 8) ||
!landScape && (x >= 0) && (x < 8) && (y >= -2) && (y < 0)) {
int p = extraPieces(x, y);
sq = -p - 2;
}
}
return sq;
}
}