1 /* |
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2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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16 */ |
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17 #include "xqdeviceorientation_p.h" |
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18 #include <e32math.h> |
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19 |
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20 const TInt KDefaultResolution = 15; |
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21 |
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22 XQDeviceOrientationPrivate::XQDeviceOrientationPrivate( |
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23 XQDeviceOrientation& qq) : q(qq), iResolution(KDefaultResolution) |
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24 { |
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25 iXRotation = 0; |
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26 iYRotation = 0; |
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27 iZRotation = 0; |
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28 } |
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29 |
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30 XQDeviceOrientationPrivate::~XQDeviceOrientationPrivate() |
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31 { |
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32 close(); |
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33 } |
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34 |
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35 void XQDeviceOrientationPrivate::open() |
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36 { |
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37 iAccelerationSensor.addFilter(*this); |
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38 iAccelerationSensor.addFilter(iAccelerationPostFilter); |
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39 |
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40 iAccelerationSensor.open(); |
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41 iAccelerationSensor.startReceiving(); |
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42 } |
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43 |
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44 void XQDeviceOrientationPrivate::close() |
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45 { |
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46 iAccelerationSensor.stopReceiving(); |
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47 iAccelerationSensor.close(); |
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48 iAccelerationSensor.filters().removeOne(this); |
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49 } |
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50 |
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51 void XQDeviceOrientationPrivate::setResolution(TInt resolution) |
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52 { |
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53 iResolution = resolution; |
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54 } |
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55 |
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56 TInt XQDeviceOrientationPrivate::resolution() const |
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57 { |
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58 return iResolution; |
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59 } |
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60 |
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61 int XQDeviceOrientationPrivate::xRotation() const |
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62 { |
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63 return iXRotation; |
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64 } |
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65 |
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66 int XQDeviceOrientationPrivate::yRotation() const |
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67 { |
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68 return iYRotation; |
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69 } |
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70 |
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71 int XQDeviceOrientationPrivate::zRotation() const |
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72 { |
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73 return iZRotation; |
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74 } |
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75 |
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76 XQDeviceOrientation::DisplayOrientation |
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77 XQDeviceOrientationPrivate::orientation() const |
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78 { |
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79 return iOrientation; |
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80 } |
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81 |
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82 bool XQDeviceOrientationPrivate::filter(int& xAcceleration, |
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83 int& yAcceleration, int& zAcceleration) |
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84 { |
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85 TReal xAcc = xAcceleration; |
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86 TReal yAcc = yAcceleration; |
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87 TReal zAcc = zAcceleration; |
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88 |
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89 TReal angle = 0; |
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90 |
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91 //axis X rotation |
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92 if (yAcc != 0) { |
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93 Math::ATan(angle, Abs(zAcc / yAcc)); |
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94 angle *= 180 / KPi; //rad to degrees |
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95 if (zAcc > 0 && yAcc > 0) { |
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96 //do nothing |
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97 } else if (zAcc > 0 && yAcc < 0) { |
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98 angle = 90 + (90 - angle); |
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99 } else if (zAcc < 0 && yAcc < 0) { |
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100 angle += 180; |
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101 } else { |
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102 angle = 270 + (90 - angle); |
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103 } |
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104 } else { |
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105 if (zAcceleration > 0) { |
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106 angle = 90; |
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107 } else { |
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108 angle = 270; |
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109 } |
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110 } |
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111 TInt xRotation = RoundAngle(angle); |
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112 |
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113 //axis Y rotation |
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114 if (xAcc != 0) { |
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115 Math::ATan(angle, Abs(zAcc / xAcc)); |
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116 angle *= 180 / KPi; //rad to degrees |
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117 if (zAcc > 0 && xAcc > 0) { |
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118 angle += 90; |
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119 } else if (zAcc > 0 && xAcc < 0) { |
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120 angle = 270 - angle; |
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121 } else if (zAcc < 0 && xAcc < 0) { |
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122 angle += 270; |
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123 } else { |
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124 angle = 90 - angle; |
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125 } |
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126 } else { |
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127 if (zAcceleration > 0) { |
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128 angle = 180; |
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129 } else { |
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130 angle = 0; |
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131 } |
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132 } |
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133 TInt yRotation = RoundAngle(angle); |
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134 |
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135 //axis Z rotation |
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136 if (yAcc != 0) { |
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137 Math::ATan(angle, Abs(xAcc / yAcc)); |
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138 angle *= 180 / KPi; //rad to degrees |
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139 if (xAcc > 0 && yAcc > 0) { |
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140 angle = 360 - angle; |
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141 } else if (xAcc > 0 && yAcc < 0) { |
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142 angle += 180; |
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143 } else if (xAcc <= 0 && yAcc <= 0) { |
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144 angle = 180 - angle; |
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145 } else { |
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146 //Do nothing |
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147 } |
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148 } else { |
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149 if (xAcceleration > 0) { |
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150 angle = 270; |
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151 } else { |
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152 angle = 90; |
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153 } |
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154 } |
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155 TInt zRotation = RoundAngle(angle); |
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156 |
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157 iXRotation = xRotation; |
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158 iYRotation = yRotation; |
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159 iZRotation = zRotation; |
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160 |
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161 XQDeviceOrientation::DisplayOrientation orientation = |
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162 XQDeviceOrientation::OrientationUndefined; |
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163 if (((315 < xRotation && xRotation < 360) || |
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164 (0 <= xRotation && xRotation <= 45)) && |
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165 ((315 < zRotation && zRotation < 360) || |
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166 (0 <= zRotation && zRotation <= 45))) { |
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167 orientation = XQDeviceOrientation::OrientationDisplayUp; |
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168 } else if (135 < xRotation && xRotation <= 225 && 135 < zRotation && |
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169 zRotation <= 225) { |
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170 orientation = XQDeviceOrientation::OrientationDisplayDown; |
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171 } else if (225 < yRotation && yRotation <= 315 && 45 < zRotation && |
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172 zRotation <= 135) { |
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173 orientation = XQDeviceOrientation::OrientationDisplayLeftUp; |
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174 } else if (45 < yRotation && yRotation <= 135 && 225 < zRotation && |
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175 zRotation <= 315) { |
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176 orientation = XQDeviceOrientation::OrientationDisplayRightUp; |
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177 } else if (45 < xRotation && xRotation <= 135 && 135 < yRotation && |
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178 yRotation <= 225) { |
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179 orientation = XQDeviceOrientation::OrientationDisplayUpwards; |
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180 } else if (225 < xRotation && xRotation <= 315 && |
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181 ((315 < yRotation && yRotation < 360) || (0 <= yRotation && |
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182 yRotation <= 45))) { |
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183 orientation = XQDeviceOrientation::OrientationDisplayDownwards; |
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184 } |
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185 |
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186 emit q.rotationChanged(xRotation, yRotation, zRotation); |
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187 |
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188 if (orientation != iOrientation) { |
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189 if (orientation != XQDeviceOrientation::OrientationUndefined) { |
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190 emit q.orientationChanged(orientation); |
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191 } |
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192 iOrientation = orientation; |
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193 } |
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194 |
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195 return false; |
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196 } |
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197 |
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198 TInt XQDeviceOrientationPrivate::RoundAngle(TReal aAngle) const |
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199 { |
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200 return ((TInt(aAngle) + iResolution / 2) / iResolution * iResolution) % 360; |
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201 } |
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202 |
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203 // End of file |
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