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1 /* |
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2 * Copyright (c) 2006 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: CMnrpEngine class definition |
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15 * |
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16 */ |
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17 |
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18 |
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19 #ifndef MNRP_ENGINE_H |
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20 #define MNRP_ENGINE_H |
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21 |
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22 #include <e32base.h> |
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23 #include <f32file.h> |
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24 |
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25 class CPosLandmark; |
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26 class TCoordinate; |
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27 class RResourceReader; |
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28 |
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29 /** Engine class used both by MnRefProvider and MnRefGeocoder |
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30 * components. Provides access to POIs database ( resource file, |
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31 * some cities ) and geocoding services. |
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32 */ |
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33 class CMnrpEngine : public CBase |
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34 { |
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35 public: |
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36 |
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37 struct TDistanceToPoi |
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38 { |
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39 TInt iPoiIndex; // index to KnownPlaces |
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40 TReal32 iDistance; // distance to Poi of iPoiIndex |
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41 }; |
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42 |
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43 public: |
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44 IMPORT_C static CMnrpEngine* NewL(); |
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45 IMPORT_C ~CMnrpEngine(); |
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46 |
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47 /** Gives access to set of POIs */ |
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48 IMPORT_C TArray<CPosLandmark*> KnownPlacesL(); |
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49 |
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50 /** Returns coordinate of given address: |
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51 * Find a POI, which country or city matches given address |
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52 * and returns its coordinates. |
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53 * @param aAddress landmark, containing address |
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54 * @return landmark, containg coordinates |
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55 * @leave KErrNotFound if can't find POI matching given address |
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56 */ |
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57 IMPORT_C CPosLandmark* AddressToCoordLC( const CPosLandmark& aAddress ); |
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58 |
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59 /** @overload |
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60 * @return landmark, containg coordinates, or NULL |
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61 */ |
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62 IMPORT_C CPosLandmark* AddressToCoordL( const CPosLandmark& aAddress ); |
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63 |
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64 /** @overload |
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65 * @param aAddress string containing address |
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66 * @return landmark, containg coordinates |
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67 * @leave KErrNotFound if can't find POI matching given address |
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68 */ |
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69 IMPORT_C CPosLandmark* AddressToCoordLC( const TDesC& aAddress ); |
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70 |
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71 /** @overload |
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72 * @param aAddress string containing address |
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73 * @return landmark, containg coordinates, or NULL |
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74 */ |
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75 IMPORT_C CPosLandmark* AddressToCoordL( const TDesC& aAddress ); |
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76 |
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77 /** Returns address for given coordinate: |
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78 * Find a closest POI and return its city and country and |
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79 * fill street with "%d[m,Km,tKm] from <city>" string, like "5 km to Tampere" |
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80 * @param aLocation coordinate |
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81 * @return landmark, containg address |
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82 * @leave KErrNotFound if can't find any POI |
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83 */ |
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84 IMPORT_C CPosLandmark* CoordToAddressLC( const TCoordinate& aLocation ); |
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85 |
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86 /** Finds a resource file in the system. |
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87 * It looks on all the drives for the file and folder given as parameter |
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88 * @param[in] aFilePathAndName path and name of the file to search for. Drive |
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89 * info is ignored |
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90 * @param[out] aRscFile full name of found resource file |
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91 * @leave KErrNotFound if file is not found. |
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92 */ |
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93 IMPORT_C void FindResourceFileL( |
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94 const TDesC& aFilePathAndName, |
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95 TFileName& aRscFile ); |
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96 |
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97 /** Returns reference to open file session, given at construction */ |
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98 IMPORT_C RFs& Fs(); |
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99 |
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100 /** Calculates distance between two landmarks. |
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101 * @param aFrom Source landmark |
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102 * @param aTo Destination landmark |
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103 * @return Distance, or NaN, if distance cannot be calculated |
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104 */ |
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105 IMPORT_C TReal32 DistanceBetweenLandmarks( |
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106 const CPosLandmark& aFrom, |
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107 const CPosLandmark& aTo ); |
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108 |
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109 /** Finds POIs closest to given reference landmark. |
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110 * @param[in] aReference reference landmark |
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111 * @param[out] aNeighbourPois List of closest POIs. |
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112 * @param[in] aMaxMatches Maximum number of results needed |
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113 */ |
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114 IMPORT_C void FindClosestPoisL( |
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115 const CPosLandmark& aReference, |
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116 RArray<CMnrpEngine::TDistanceToPoi>& aNeighbourPois, |
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117 TInt aMaxMatches ); |
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118 |
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119 /** Finds POIs closest to given location. |
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120 * @param[in] aReference reference location |
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121 * @param[out] aNeighbourPois List of landmarks of closest POIs. |
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122 * @param[in] aMaxMatches Maximum number of results needed |
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123 */ |
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124 IMPORT_C void BestCoordToAddressMatchesL( |
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125 const TCoordinate& aLocation, |
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126 RPointerArray<CPosLandmark>& aMatches, |
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127 TInt aMaxMatches ); |
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128 |
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129 protected: |
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130 |
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131 void ConstructL(); |
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132 CMnrpEngine(); |
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133 |
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134 /** Loads POIs from database ( resource file ) */ |
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135 void LoadKnownPlacesL(); |
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136 /** Reads array of PLACES resource structures */ |
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137 void ReadPlacesResourceL( RResourceReader& aReader ); |
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138 |
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139 CPosLandmark* CreateCloseLandmarkLC( const CPosLandmark& aReference, TReal32 aDistance ); |
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140 |
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141 private: |
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142 RPointerArray<CPosLandmark> iPlaces; |
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143 RFs iFileSession; |
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144 }; |
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145 |
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146 #endif // MNRP_ENGINE_H |
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147 |