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1 /* |
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2 * Copyright (c) 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: floating item |
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15 * |
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16 */ |
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17 |
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18 #include <e32math.h> |
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19 #include <eiklbv.h> |
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20 #include "mmfloatingitem.h" |
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21 |
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22 // ----------------------------------------------------------------------------- |
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23 // |
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24 // ----------------------------------------------------------------------------- |
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25 // |
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26 TMmFloatingItem::TMmFloatingItem( TInt aDrawnIndex, TPoint aStartPosition, |
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27 TMmFloatingItemType aType, TInt aAnimationFrames, CListBoxView* aView ) |
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28 { |
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29 iView = aView; |
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30 iSizeStep = 0; |
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31 iZoomRatio = 1; |
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32 iManualDelete = EFalse; |
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33 |
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34 if ( iView ) |
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35 { |
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36 // item position is relative |
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37 iItemPosition = aStartPosition - iView->ItemPos( 0 ); |
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38 } |
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39 else |
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40 { |
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41 // item position is absolute |
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42 iItemPosition = aStartPosition; |
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43 } |
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44 |
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45 iDrawnItemIndex = aDrawnIndex; |
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46 iType = aType; |
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47 iFrames = aAnimationFrames; |
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48 iFrameCounter = 0; |
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49 CalculateSteps(TPoint(0,0)); |
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50 } |
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51 |
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52 // ----------------------------------------------------------------------------- |
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53 // |
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54 // ----------------------------------------------------------------------------- |
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55 // |
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56 void TMmFloatingItem::SetPositionStep( TPoint aDiffetenceVector ) |
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57 { |
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58 ASSERT( iFrames ); |
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59 iFrameCounter = 0; |
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60 CalculateSteps( aDiffetenceVector ); |
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61 } |
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62 // ----------------------------------------------------------------------------- |
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63 // |
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64 // ----------------------------------------------------------------------------- |
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65 // |
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66 void TMmFloatingItem::CalculateSteps(TPoint aVector) |
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67 { |
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68 iPositionStep.Reset(); |
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69 |
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70 TReal x = aVector.iX; |
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71 TReal y = aVector.iY; |
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72 |
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73 TReal sx = 0.0; |
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74 TReal sy = 0.0; |
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75 |
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76 for( TInt i = 0; i < iFrames; i++ ) |
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77 { |
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78 TReal sin; |
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79 Math::Sin( sin, (i+1) * KPi/iFrames + KPi * 3./2. ); |
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80 TReal xx = x * (0.5*( sin + 1.0 ) ) - sx; |
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81 TReal yy = y * (0.5*( sin + 1.0 ) ) - sy; |
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82 |
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83 sx += xx; |
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84 sy += yy; |
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85 |
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86 iPositionStep.At(i) = TPoint( xx, yy ); |
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87 } |
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88 } |
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89 |
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90 // ----------------------------------------------------------------------------- |
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91 // |
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92 // ----------------------------------------------------------------------------- |
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93 // |
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94 void TMmFloatingItem::SetSizeStep( TReal aStartSize, TReal aFinalSize ) |
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95 { |
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96 ASSERT( iFrames ); |
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97 iFrameCounter = 0; |
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98 iZoomRatio = aStartSize; |
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99 iSizeStep = (aFinalSize - aStartSize) / iFrames; |
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100 } |
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101 |
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102 |
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103 // ----------------------------------------------------------------------------- |
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104 // |
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105 // ----------------------------------------------------------------------------- |
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106 // |
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107 TBool TMmFloatingItem::MakeStep() |
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108 { |
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109 TBool ret(EFalse); |
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110 |
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111 if(iFrameCounter >= iFrames && iManualDelete == EFalse) |
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112 { |
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113 InvalidateFloatingItem(); |
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114 } |
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115 else if (iFrameCounter < iFrames) |
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116 { |
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117 iItemPosition += iPositionStep[iFrameCounter]; |
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118 iZoomRatio += iSizeStep; |
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119 ret = Abs(iPositionStep[iFrameCounter].iX) > 0 |
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120 || Abs(iPositionStep[iFrameCounter].iY > 0) |
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121 || Abs(iSizeStep) > 0; |
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122 iFrameCounter++; |
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123 } |
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124 |
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125 return ret; |
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126 } |
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127 |
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128 // ----------------------------------------------------------------------------- |
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129 // |
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130 // ----------------------------------------------------------------------------- |
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131 // |
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132 void TMmFloatingItem::SetManualDelete(TBool aManual) |
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133 { |
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134 iManualDelete = aManual; |
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135 } |
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136 |
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137 // ----------------------------------------------------------------------------- |
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138 // |
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139 // ----------------------------------------------------------------------------- |
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140 // |
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141 TReal TMmFloatingItem::GetCurrentZoomRatio() const |
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142 { |
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143 return iZoomRatio; |
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144 } |
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145 |
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146 // ----------------------------------------------------------------------------- |
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147 // |
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148 // ----------------------------------------------------------------------------- |
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149 // |
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150 TMmFloatingItemType TMmFloatingItem::GetFloatingItemType() const |
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151 { |
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152 return iType; |
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153 } |
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154 |
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155 TInt TMmFloatingItem::GetDrawnItemIndex() const |
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156 { |
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157 return iDrawnItemIndex; |
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158 } |
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159 |
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160 TPoint TMmFloatingItem::GetItemPosition() const |
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161 { |
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162 TPoint ret; |
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163 if ( iView ) |
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164 { |
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165 // item position is relative |
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166 ret = iItemPosition + iView->ItemPos( 0 ); |
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167 } |
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168 else |
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169 { |
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170 // item position is absolute |
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171 ret = iItemPosition; |
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172 } |
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173 return ret; |
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174 } |
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175 |
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176 void TMmFloatingItem::InvalidateFloatingItem() |
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177 { |
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178 iDrawnItemIndex = KErrNotFound; |
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179 } |
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180 |
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181 TBool TMmFloatingItem::IsFloatingItemValid() const |
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182 { |
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183 return GetDrawnItemIndex() != KErrNotFound |
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184 && iType != EPostDragRefreshItem |
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185 && iType != EPostHighlightChangeRefreshItem; |
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186 } |
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187 |
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188 TBool TMmFloatingItem::IsManualDelete() |
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189 { |
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190 return iManualDelete; |
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191 } |
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192 |
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193 TInt TMmFloatingItem::GetZoomingStatus() |
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194 { |
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195 return iSizeStep; |
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196 } |
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197 // End of file |