1 /* |
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2 * Copyright (c) 2006-2007 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: CMnrpMapModel 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_MAPMODEL_H |
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20 #define MNRP_MAPMODEL_H |
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21 |
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22 #include <coecntrl.h> |
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23 #include "mnrppositionrequest.h" |
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24 #include "EPos_Landmarks.h" |
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25 |
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26 class CFbsBitmap; |
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27 class CImageDecoder; |
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28 |
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29 class CPosLandmark; |
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30 class CPosLandmarkDatabase; |
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31 class CPosLmCategoryManager; |
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32 |
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33 class CMnrpMapViewService; |
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34 #ifdef RD_MAPNAV_BITMAP_ACCESS |
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35 class CMnrpMapImageService; |
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36 class TMnMapImageParams; |
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37 #endif |
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38 class CMnrpEngine; |
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39 |
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40 class MImageLoaderObserver; |
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41 |
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42 /** Point with real coordinates */ |
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43 class TRealPoint |
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44 { |
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45 public: |
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46 TRealPoint(); |
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47 TRealPoint( TReal aX, TReal aY ); |
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48 TRealPoint( TCoordinate aCoordinate ); |
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49 |
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50 TRealPoint operator+( const TRealPoint& aRight ); |
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51 TRealPoint operator-( const TRealPoint& aRight ); |
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52 TRealPoint operator*( const TReal& aRight ); |
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53 TRealPoint operator/( const TReal& aRight ); |
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54 |
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55 void Set( TReal aX, TReal aY ); |
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56 TCoordinate Coordinate(); |
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57 TBool IsValid(); |
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58 |
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59 TReal iX; // matches longitude in this model |
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60 TReal iY; // matches latitude in this model |
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61 }; |
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62 |
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63 /** Model observer class */ |
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64 class MMapModelObserver |
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65 { |
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66 public: |
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67 virtual void HandleModelUpdateL() =0; |
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68 }; |
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69 |
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70 /** Data model for MapView. |
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71 * This implementation shows map as rectangle and does not support |
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72 * passing its borders. It displays POIs from Engine and client's |
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73 * landmarks, which define view area, if not specified by client. |
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74 */ |
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75 class CMnrpMapModel : public CBase, public MMnrpPositionObserver |
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76 { |
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77 public: |
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78 IMPORT_C static CMnrpMapModel* NewL( |
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79 MMapModelObserver& aObserver, |
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80 CMnrpEngine& aEngine ); |
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81 |
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82 IMPORT_C static CMnrpMapModel* NewL( |
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83 CMnrpEngine& aEngine ); |
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84 |
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85 IMPORT_C ~CMnrpMapModel(); |
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86 |
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87 /** Service calls it when new ShowOnMap request comes |
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88 * from client */ |
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89 IMPORT_C void UpdateModelL( CMnrpMapViewService& aService ); |
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90 |
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91 #ifdef RD_MAPNAV_BITMAP_ACCESS |
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92 /** Service calls it when new RenderImage request comes |
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93 * from client */ |
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94 IMPORT_C void UpdateModelL( const CMnrpMapImageService& aService ); |
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95 |
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96 /** Plugin calls it when new CoordinateConversion request comes |
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97 * from client */ |
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98 IMPORT_C void UpdateModel( const TMnMapImageParams& aParams ); |
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99 #endif |
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100 /** Defines dimensions of view used for map display. |
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101 * this information is used to convert absolute coordinates |
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102 * to screen coordinates. Absolute coordinates are plain |
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103 * latitude and longitude degrees. |
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104 */ |
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105 IMPORT_C void SetScreenSize( TSize aScreenSize ); |
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106 |
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107 IMPORT_C void RenderL( |
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108 CFbsBitmap& aBitmap, |
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109 TRect aTargetRect, |
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110 CFont* aTextFont, |
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111 CFont* aItemFont ) const; |
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112 |
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113 IMPORT_C TInt NumIgnoredLandmarks(); |
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114 |
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115 /** Draw item. |
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116 * It is a POI or client's landmark, holds coordinates |
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117 * and associated text and icon. |
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118 */ |
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119 class CDrawItem : public CBase |
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120 { |
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121 public: |
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122 /** Constructs from landmark instance */ |
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123 static CDrawItem* NewLC( const CPosLandmark& ); |
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124 /** Constructs from linked landmark. If landmark |
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125 * does not have icon, it tries to get icon of its |
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126 * category, if only single category is assigned. |
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127 */ |
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128 static CDrawItem* NewLC( |
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129 const CPosLandmark& aLm, |
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130 CPosLmCategoryManager& aCatman ); |
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131 |
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132 ~CDrawItem(); |
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133 |
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134 const TDesC& Text() { return *iText; }; |
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135 TPoint& Position() { return iScreenPosition; }; |
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136 TRealPoint AbsolutePosition() { return iAbsolutePosition; }; |
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137 CFbsBitmap* Bitmap() { return iBitmap; }; |
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138 CFbsBitmap* Mask() { return iMask; }; |
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139 TBool IsPoi() { return iOwnPoi; }; |
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140 |
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141 void SetAbsolutePosition( const TLocality& aLocality ); |
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142 |
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143 private: |
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144 HBufC* iText; |
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145 /** Absolute coordinates - lat,lon */ |
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146 TRealPoint iAbsolutePosition; |
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147 /** Coordinates on screen (pixels) */ |
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148 TPoint iScreenPosition; |
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149 CFbsBitmap* iBitmap; |
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150 CFbsBitmap* iMask; |
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151 /** Whether it is client's landmark or internal POI */ |
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152 TBool iOwnPoi; |
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153 |
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154 friend class CMnrpMapModel; |
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155 }; |
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156 /** Returns all items, that can be shown on screen. Screen |
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157 * coordinates are updated according to current scale and viewport */ |
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158 TArray<CDrawItem*> Items() const; |
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159 |
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160 /** Describes grid to show */ |
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161 class TGrid |
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162 { |
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163 public: |
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164 /** Reference grid point (screen) */ |
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165 TPoint iReference; |
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166 /** Distance between grid lines (screen)*/ |
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167 TInt iGridStep; |
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168 |
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169 /** Coordinate of reference grid point (absolute) */ |
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170 TCoordinate iAbsoluteReference; |
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171 /** Distance between grid lines (absolute) */ |
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172 TReal iAbsoluteGridStep; |
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173 }; |
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174 |
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175 /** Returns grid for current viewport and scale */ |
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176 void GetGrid( TGrid& aGrid ) const; |
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177 |
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178 /** Information about current location */ |
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179 class TCurrentLocation |
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180 { |
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181 public: |
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182 /** Screen coordinates */ |
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183 TPoint iLocation; |
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184 /** Error radius in screen units - pixels */ |
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185 TInt iErrorRadius; |
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186 |
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187 /** Absolute coordinates */ |
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188 TCoordinate iAbsoluteLocation; |
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189 /** Error radius in degrees */ |
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190 TReal iAbsoluteErrorDegrees; |
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191 |
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192 TBool iIsValid; |
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193 }; |
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194 |
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195 /** Returns current location */ |
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196 IMPORT_C TCurrentLocation CurrentLocation() const; |
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197 |
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198 // Zooming |
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199 IMPORT_C void Zoom( TReal aZoomRate ); |
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200 |
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201 // View movement |
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202 IMPORT_C void MoveTo( TCoordinate aTarget ); |
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203 |
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204 // Reset-kind of action, moves to world center |
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205 IMPORT_C void GoCenter(); |
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206 |
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207 /** Converts absolute units to screen */ |
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208 IMPORT_C TPoint AbsoluteToScreen( TCoordinate aAbsolutePoint ) const; |
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209 IMPORT_C TInt AbsoluteToScreen( TReal aDistance ) const; |
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210 |
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211 /** Converts screen coords to absolute */ |
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212 IMPORT_C TCoordinate ScreenToAbsolute( TPoint aScreenPoint ) const; |
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213 IMPORT_C TReal ScreenToAbsolute( TInt aDistance ) const; |
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214 |
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215 // Viewport in absolute units - degrees |
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216 IMPORT_C TReal Left() const; |
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217 IMPORT_C TReal Top() const; |
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218 IMPORT_C TReal Right() const; |
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219 IMPORT_C TReal Bottom() const; |
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220 IMPORT_C TReal Width() const; |
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221 IMPORT_C TReal Height() const; |
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222 IMPORT_C TCoordinate Center() const; |
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223 |
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224 protected: |
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225 /** Converts absolute coords to screen */ |
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226 TPoint AbsoluteToScreen( TRealPoint aAbsolutePoint ) const; |
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227 |
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228 protected: // from MMnrpPositionObserver |
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229 |
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230 /** Forces map view update when new position comes */ |
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231 void HandlePositionRequestCompletedL( TInt aError ); |
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232 |
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233 private: |
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234 |
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235 void ConstructL(); |
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236 CMnrpMapModel( MMapModelObserver& aObserver, CMnrpEngine& aEngine ); |
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237 CMnrpMapModel( CMnrpEngine& aEngine ); |
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238 |
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239 void AddCitiesL(); |
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240 |
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241 /** Includes given draw item into bounding box */ |
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242 void AdjustBoundingBox( CDrawItem& aItem, TRealPoint& aMin, TRealPoint& aMax ); |
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243 |
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244 /** Verifies if draw item has position. If not, tries geocoding. |
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245 * Updates the item if position is found from geocoding. |
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246 * @return ETrue if position is found (possibly from geocoding), EFalse otherwise */ |
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247 TBool CheckDrawItemHasPositionL( CDrawItem& aItem, const CPosLandmark& aLandmark ); |
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248 |
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249 /** Adjusts viewport if movement or zooming goes beyond the borders */ |
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250 void CheckBorders(); |
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251 |
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252 TReal MaxScale() const; |
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253 TRect CursorMargin(); |
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254 |
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255 // Grid drawing |
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256 void DrawGrid( |
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257 CFbsBitGc& aGc, |
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258 const TSize& aBoxSize, |
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259 CMnrpMapModel::TGrid& aGrid ) const; |
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260 |
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261 void DrawVerticalLine( CFbsBitGc& aGc, TInt aX, TSize aBoxSize ) const; |
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262 void DrawHorizontalLine( CFbsBitGc& aGc, TInt aY, TSize aBoxSize ) const; |
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263 |
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264 /** Draws drawable items */ |
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265 void DrawLandmarks( |
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266 CFbsBitGc& aGc, |
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267 CFont& aFont, |
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268 const TSize& aBoxSize, |
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269 TBool aSwitchColorAndShadow ) const; |
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270 |
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271 /** Draws current location */ |
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272 void DrawCurrentLocation( |
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273 CFbsBitGc& aGc, |
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274 const TSize& aBoxSize ) const; |
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275 |
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276 private: |
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277 CMnrpPositionRequest* iPositionRequest; |
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278 TPositionInfo iPosInfo; |
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279 |
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280 TSize iScreenSize; |
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281 TRealPoint iViewOrigin; |
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282 |
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283 TReal iScale; // 1 == 1 degree per pixel |
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284 |
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285 MMapModelObserver* iObserver; |
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286 |
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287 mutable RPointerArray<CDrawItem> iDrawItems; |
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288 |
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289 CMnrpEngine& iEngine; |
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290 |
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291 TBool iUseCurrentLocationAsOrigin; |
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292 TBool iShowCurrentLocation; |
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293 |
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294 CFont* iTextFont; |
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295 CFont* iItemFont; |
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296 |
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297 TInt iNumIgnoredLandmarks; |
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298 }; |
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299 |
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300 #endif // MNRP_MAPMODEL_H |
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301 |
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