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1 /* |
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2 * Copyright (c) 2007-2008 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: tuicscrollbarmodel.cpp |
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15 * |
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16 */ |
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17 |
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18 #include "tuicscrollbarmodel.h" |
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19 #include "emailtrace.h" |
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20 |
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21 #include <aknlayoutscalable_avkon.cdl.h> |
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22 #include <AknUtils.h> |
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23 |
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24 // --------------------------------------------------------------------------- |
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25 // TUiCScrollBarModel::TUiCScrollbarModel |
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26 // --------------------------------------------------------------------------- |
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27 // |
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28 TUiCScrollBarModel::TUiCScrollBarModel() |
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29 : iHeight( 0 ), iWindowHeight( 0 ), iWindowPosition( 0 ) |
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30 { |
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31 FUNC_LOG; |
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32 } |
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33 |
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34 // --------------------------------------------------------------------------- |
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35 // TUiCScrollBarModel::SetHeight |
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36 // --------------------------------------------------------------------------- |
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37 // |
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38 void TUiCScrollBarModel::SetHeight( TInt aHeight ) |
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39 { |
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40 FUNC_LOG; |
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41 iHeight = aHeight; |
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42 } |
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43 |
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44 // --------------------------------------------------------------------------- |
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45 // TUiCScrollBarModel::Height |
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46 // --------------------------------------------------------------------------- |
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47 // |
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48 TInt TUiCScrollBarModel::Height() const |
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49 { |
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50 FUNC_LOG; |
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51 return iHeight; |
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52 } |
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53 |
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54 // --------------------------------------------------------------------------- |
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55 // TUiCScrollBarModel::SetWindowHeight |
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56 // --------------------------------------------------------------------------- |
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57 // |
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58 void TUiCScrollBarModel::SetWindowHeight( TInt aHeight ) |
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59 { |
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60 FUNC_LOG; |
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61 iWindowHeight = aHeight; |
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62 } |
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63 |
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64 // --------------------------------------------------------------------------- |
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65 // TUiCScrollBarModel::WindowHeight |
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66 // --------------------------------------------------------------------------- |
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67 // |
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68 TInt TUiCScrollBarModel::WindowHeight() const |
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69 { |
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70 FUNC_LOG; |
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71 return iWindowHeight; |
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72 } |
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73 |
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74 // --------------------------------------------------------------------------- |
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75 // TUiCScrollBarModel::SetWindowPosition |
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76 // --------------------------------------------------------------------------- |
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77 // |
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78 void TUiCScrollBarModel::SetWindowPosition( TInt aPosition ) |
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79 { |
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80 FUNC_LOG; |
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81 iWindowPosition = aPosition; |
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82 } |
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83 |
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84 // --------------------------------------------------------------------------- |
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85 // TUiCScrollBarModel::WindowPosition |
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86 // --------------------------------------------------------------------------- |
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87 // |
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88 TInt TUiCScrollBarModel::WindowPosition() const |
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89 { |
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90 FUNC_LOG; |
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91 return iWindowPosition; |
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92 } |
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93 |
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94 // --------------------------------------------------------------------------- |
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95 // TUiCScrollBarModel::ThumbHeight |
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96 // --------------------------------------------------------------------------- |
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97 // |
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98 TInt TUiCScrollBarModel::ThumbHeight() const |
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99 { |
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100 FUNC_LOG; |
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101 TInt thumbHeight( 0 ); |
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102 if ( iHeight > 0 ) |
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103 { |
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104 thumbHeight = Min( |
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105 Max( CalculatedThumbHeight(), MinimumThumbHeight() ), |
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106 iWindowHeight ); |
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107 } |
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108 return thumbHeight; |
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109 } |
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110 |
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111 // --------------------------------------------------------------------------- |
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112 // TUiCScrollBarModel::ThumbPosition |
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113 // --------------------------------------------------------------------------- |
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114 // |
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115 TInt TUiCScrollBarModel::ThumbPosition() const |
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116 { |
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117 FUNC_LOG; |
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118 TInt thumbPosition( 0 ); |
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119 if ( iHeight > 0 ) |
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120 { |
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121 thumbPosition = iWindowHeight * iWindowPosition / iHeight; |
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122 if ( iWindowHeight > 0 ) |
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123 { |
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124 thumbPosition -= (ThumbHeight() - CalculatedThumbHeight()) |
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125 * thumbPosition / iWindowHeight; |
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126 } |
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127 } |
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128 return thumbPosition; |
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129 } |
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130 |
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131 // --------------------------------------------------------------------------- |
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132 // TUiCScrollBarModel::ScrollBarNeeded |
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133 // --------------------------------------------------------------------------- |
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134 // |
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135 TBool TUiCScrollBarModel::ScrollBarNeeded() const |
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136 { |
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137 FUNC_LOG; |
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138 return iWindowHeight < iHeight; |
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139 } |
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140 |
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141 // --------------------------------------------------------------------------- |
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142 // TUiCScrollBarModel::MinimumThumbHeight |
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143 // --------------------------------------------------------------------------- |
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144 // |
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145 TInt TUiCScrollBarModel::MinimumThumbHeight() const |
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146 { |
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147 FUNC_LOG; |
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148 TAknLayoutRect layoutRect; |
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149 TAknWindowComponentLayout layout = AknLayoutScalable_Avkon::aid_size_min_handle(); |
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150 layoutRect.LayoutRect( TRect(), layout.LayoutLine() ); |
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151 return layoutRect.Rect().Height(); |
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152 } |
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153 |
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154 // --------------------------------------------------------------------------- |
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155 // TUiCScrollBarModel::CalculatedThumbHeight |
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156 // --------------------------------------------------------------------------- |
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157 // |
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158 TInt TUiCScrollBarModel::CalculatedThumbHeight() const |
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159 { |
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160 FUNC_LOG; |
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161 TInt thumbHeight( 0 ); |
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162 if ( iHeight > 0 ) |
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163 { |
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164 thumbHeight = iWindowHeight * iWindowHeight / iHeight; |
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165 } |
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166 return thumbHeight; |
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167 } |
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168 |
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169 // end of file |