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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the examples of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include <QtGui> |
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43 |
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44 #include "tictactoe.h" |
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45 |
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46 TicTacToe::TicTacToe(QWidget *parent) |
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47 : QWidget(parent) |
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48 { |
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49 } |
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50 |
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51 QSize TicTacToe::minimumSizeHint() const |
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52 { |
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53 return QSize(200, 200); |
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54 } |
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55 |
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56 QSize TicTacToe::sizeHint() const |
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57 { |
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58 return QSize(200, 200); |
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59 } |
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60 |
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61 void TicTacToe::setState(const QString &newState) |
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62 { |
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63 turnNumber = 0; |
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64 myState = "---------"; |
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65 int position = 0; |
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66 while (position < 9 && position < newState.length()) { |
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67 QChar mark = newState.at(position); |
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68 if (mark == Cross || mark == Nought) { |
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69 ++turnNumber; |
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70 myState.replace(position, 1, mark); |
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71 } |
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72 position++; |
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73 } |
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74 update(); |
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75 } |
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76 |
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77 QString TicTacToe::state() const |
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78 { |
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79 return myState; |
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80 } |
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81 |
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82 void TicTacToe::clearBoard() |
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83 { |
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84 myState = "---------"; |
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85 turnNumber = 0; |
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86 update(); |
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87 } |
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88 |
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89 void TicTacToe::mousePressEvent(QMouseEvent *event) |
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90 { |
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91 if (turnNumber == 9) { |
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92 clearBoard(); |
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93 update(); |
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94 } else { |
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95 for (int position = 0; position < 9; ++position) { |
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96 QRect cell = cellRect(position / 3, position % 3); |
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97 if (cell.contains(event->pos())) { |
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98 if (myState.at(position) == Empty) { |
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99 if (turnNumber % 2 == 0) |
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100 myState.replace(position, 1, Cross); |
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101 else |
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102 myState.replace(position, 1, Nought); |
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103 ++turnNumber; |
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104 update(); |
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105 } |
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106 } |
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107 } |
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108 } |
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109 } |
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110 |
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111 void TicTacToe::paintEvent(QPaintEvent * /* event */) |
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112 { |
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113 QPainter painter(this); |
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114 painter.setRenderHint(QPainter::Antialiasing); |
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115 |
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116 painter.setPen(QPen(Qt::darkGreen, 1)); |
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117 painter.drawLine(cellWidth(), 0, cellWidth(), height()); |
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118 painter.drawLine(2 * cellWidth(), 0, 2 * cellWidth(), height()); |
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119 painter.drawLine(0, cellHeight(), width(), cellHeight()); |
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120 painter.drawLine(0, 2 * cellHeight(), width(), 2 * cellHeight()); |
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121 |
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122 painter.setPen(QPen(Qt::darkBlue, 2)); |
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123 |
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124 for (int position = 0; position < 9; ++position) { |
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125 QRect cell = cellRect(position / 3, position % 3); |
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126 |
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127 if (myState.at(position) == Cross) { |
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128 painter.drawLine(cell.topLeft(), cell.bottomRight()); |
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129 painter.drawLine(cell.topRight(), cell.bottomLeft()); |
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130 } else if (myState.at(position) == Nought) { |
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131 painter.drawEllipse(cell); |
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132 } |
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133 } |
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134 |
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135 painter.setPen(QPen(Qt::yellow, 3)); |
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136 |
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137 for (int position = 0; position < 9; position = position + 3) { |
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138 if (myState.at(position) != Empty |
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139 && myState.at(position + 1) == myState.at(position) |
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140 && myState.at(position + 2) == myState.at(position)) { |
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141 int y = cellRect((position / 3), 0).center().y(); |
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142 painter.drawLine(0, y, width(), y); |
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143 turnNumber = 9; |
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144 } |
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145 } |
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146 |
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147 for (int position = 0; position < 3; ++position) { |
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148 if (myState.at(position) != Empty |
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149 && myState.at(position + 3) == myState.at(position) |
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150 && myState.at(position + 6) == myState.at(position)) { |
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151 int x = cellRect(0, position).center().x(); |
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152 painter.drawLine(x, 0, x, height()); |
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153 turnNumber = 9; |
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154 } |
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155 } |
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156 if (myState.at(0) != Empty && myState.at(4) == myState.at(0) |
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157 && myState.at(8) == myState.at(0)) { |
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158 painter.drawLine(0, 0, width(), height()); |
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159 turnNumber = 9; |
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160 } |
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161 if (myState.at(2) != Empty && myState.at(4) == myState.at(2) |
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162 && myState.at(6) == myState.at(2)) { |
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163 painter.drawLine(0, height(), width(), 0); |
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164 turnNumber = 9; |
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165 } |
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166 } |
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167 |
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168 QRect TicTacToe::cellRect(int row, int column) const |
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169 { |
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170 const int HMargin = width() / 30; |
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171 const int VMargin = height() / 30; |
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172 return QRect(column * cellWidth() + HMargin, |
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173 row * cellHeight() + VMargin, |
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174 cellWidth() - 2 * HMargin, |
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175 cellHeight() - 2 * VMargin); |
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176 } |