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1 /* |
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2 * Copyright (c) 1997-2009 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 |
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18 |
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19 #include <badesca.h> |
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20 #include <gdi.h> |
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21 #include <w32std.h> |
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22 #include <eiklbx.pan> |
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23 #include <eiklbx.h> |
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24 #include <eiklbv.h> |
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25 #include <eiklbm.h> |
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26 #include <eiklbi.h> |
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27 #include <gulutil.h> |
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28 #include <eikenv.h> |
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29 #include <avkon.rsg> |
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30 #include <barsread.h> |
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31 #include <AknUtils.h> |
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32 #include <AknsDrawUtils.h> |
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33 #include <AknsControlContext.h> |
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34 |
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35 #ifdef RD_UI_TRANSITION_EFFECTS_LIST |
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36 #include <aknlistboxtfxinternal.h> |
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37 #include <aknlistloadertfx.h> |
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38 #endif |
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39 |
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40 #include "laflbv.h" |
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41 #include "laflbx.h" |
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42 #include "akntrace.h" |
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43 |
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44 #define ITEM_EXISTS_BEGIN TInt no_of_items__ = iModel->NumberOfItems() |
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45 #define ITEM_EXISTS(x) (((x) > -1) && ((x) < no_of_items__)) |
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46 |
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47 #define ITEM_EXISTS_ONCE(x) (((x) > -1) && ((x) < iModel->NumberOfItems())) |
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48 |
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49 // |
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50 // class CListBoxView |
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51 // |
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52 CListBoxViewExtension* CListBoxViewExtension::NewL() |
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53 { |
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54 CListBoxViewExtension* self = new ( ELeave ) CListBoxViewExtension; |
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55 CleanupStack::PushL( self ); |
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56 self->ConstructL(); |
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57 CleanupStack::Pop(); // self |
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58 |
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59 return self; |
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60 } |
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61 |
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62 CListBoxViewExtension::~CListBoxViewExtension() |
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63 { |
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64 } |
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65 |
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66 void CListBoxViewExtension::ConstructL() |
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67 { |
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68 // Panning and flicking disabled by default |
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69 iScrollingDisabled = ETrue; |
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70 } |
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71 |
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72 |
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73 void CListBoxView::SetVisibilityObserver(MListVisibilityObserver* aObserver) |
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74 { |
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75 iVisibilityObserver=aObserver; |
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76 } |
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77 |
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78 EXPORT_C TBool CListBoxView::IsVisible() const |
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79 { |
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80 if(iVisibilityObserver) |
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81 return(iVisibilityObserver->IsVisible()); |
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82 return ETrue; |
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83 } |
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84 |
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85 EXPORT_C void CListBoxView::SetListEmptyTextL(const TDesC& aText) |
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86 { |
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87 delete iListEmptyText; |
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88 iListEmptyText = NULL; |
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89 |
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90 iListEmptyText= aText.AllocL(); |
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91 } |
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92 |
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93 EXPORT_C CListBoxView::CListBoxView() |
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94 { |
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95 _AKNTRACE_FUNC_ENTER; |
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96 iItemHeight = 20; |
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97 // iBackColor = KDefaultLbxBackColor; |
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98 iBackColor = CEikonEnv::Static()->Color(EColorControlBackground); //KDefaultLbxBackColor; |
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99 iMatcherCursorColor = TRgb(177, 177, 177); // light gray? |
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100 iCurrentItemIndex = 0; |
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101 iTopItemIndex = 0; |
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102 iListEmptyText = 0; |
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103 iVerticalOffset = 0; |
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104 _AKNTRACE_FUNC_EXIT; |
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105 } |
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106 |
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107 EXPORT_C void CListBoxView::ConstructL(MListBoxModel* aList, CListItemDrawer* aItemDrawer, CWsScreenDevice* aScreen, RWindowGroup* aGroupWindow, RWindow* aWsWindow, const TRect& aDisplayArea, TInt aItemHeight) |
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108 { |
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109 _AKNTRACE_FUNC_ENTER; |
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110 iExtension = CListBoxViewExtension::NewL(); |
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111 |
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112 iModel = aList; |
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113 iItemDrawer = aItemDrawer; |
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114 iWin = aWsWindow; |
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115 iGroupWin = aGroupWindow; |
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116 // create a graphics context |
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117 User::LeaveIfError(aScreen->CreateContext(iGc)); |
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118 iGc->Activate(*iWin); |
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119 iItemDrawer->SetGc(iGc); |
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120 iViewRect = aDisplayArea; |
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121 iItemHeight = aItemHeight; |
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122 iSelectionIndexes = new(ELeave) CArrayFixFlat<TInt>(5); |
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123 |
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124 //SetListEmptyTextL(_L("No Data")); |
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125 TResourceReader rr; |
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126 CEikonEnv::Static()->CreateResourceReaderLC(rr,R_AVKON_LISTBOX_DEFAULT_EMPTY_TEXT); |
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127 TPtrC emptytext= rr.ReadTPtrC(); |
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128 SetListEmptyTextL(emptytext); |
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129 CleanupStack::PopAndDestroy(); |
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130 _AKNTRACE_FUNC_EXIT; |
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131 } |
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132 |
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133 EXPORT_C CListBoxView::~CListBoxView() |
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134 { |
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135 _AKNTRACE_FUNC_ENTER; |
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136 // Although my "item Drawer" is created by some other object, it is convenient |
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137 // for me to destroy it here... |
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138 delete iExtension; |
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139 delete(iItemDrawer); |
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140 delete iSelectionIndexes; |
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141 delete(iGc); |
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142 delete (iListEmptyText); |
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143 _AKNTRACE_FUNC_EXIT; |
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144 } |
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145 |
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146 EXPORT_C TInt CListBoxView::TopItemIndex() const |
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147 { |
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148 _AKNTRACE( "iTopItemIndex = %d", iTopItemIndex ); |
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149 return iTopItemIndex; |
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150 } |
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151 |
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152 EXPORT_C TInt CListBoxView::BottomItemIndex() const |
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153 { |
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154 _AKNTRACE( "iBottomItemIndex = %d", iBottomItemIndex ); |
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155 return iBottomItemIndex; |
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156 } |
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157 |
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158 EXPORT_C TBool CListBoxView::ItemIsSelected(TInt aItemIndex) const |
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159 { |
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160 _AKNTRACE( "Item selected is %d", aItemIndex ); |
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161 TKeyArrayFix key(0, ECmpTInt); |
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162 TInt pos; |
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163 if (iSelectionIndexes->Find(aItemIndex, key, pos)) |
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164 return(EFalse); |
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165 return(ETrue); |
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166 } |
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167 |
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168 EXPORT_C void CListBoxView::ToggleItemL(TInt aItemIndex) |
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169 { |
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170 _AKNTRACE_FUNC_ENTER; |
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171 __ASSERT_DEBUG(iSelectionIndexes, Panic(EEikPanicListBoxNoSelIndexArray)); |
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172 if (iItemDrawer->Properties(aItemIndex).IsSelectionHidden()) { DeselectItem(aItemIndex); return; } |
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173 TKeyArrayFix key(0, ECmpTInt); |
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174 TInt pos; |
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175 if (iSelectionIndexes->Find(aItemIndex, key, pos)) |
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176 iSelectionIndexes->AppendL(aItemIndex); |
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177 else |
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178 iSelectionIndexes->Delete(pos); |
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179 DrawItem(aItemIndex); |
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180 _AKNTRACE_FUNC_EXIT; |
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181 } |
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182 |
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183 EXPORT_C void CListBoxView::SelectItemL(TInt aItemIndex) |
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184 { |
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185 // select the specified item; if already selected, do nothing |
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186 _AKNTRACE_FUNC_ENTER; |
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187 _AKNTRACE( "SelectItem is %d", aItemIndex ); |
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188 __ASSERT_DEBUG(iSelectionIndexes, Panic(EEikPanicListBoxNoSelIndexArray)); |
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189 if (iItemDrawer->Properties(aItemIndex).IsSelectionHidden()) |
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190 { |
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191 DeselectItem(aItemIndex); |
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192 _AKNTRACE_FUNC_EXIT; |
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193 return; |
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194 } |
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195 TKeyArrayFix key(0, ECmpTInt); |
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196 TInt pos; |
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197 if (iSelectionIndexes->Find(aItemIndex, key, pos)) |
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198 { |
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199 #ifdef RD_UI_TRANSITION_EFFECTS_LIST |
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200 MAknListBoxTfxInternal* transApi = CAknListLoader::TfxApiInternal( iGc ); |
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201 if ( transApi ) |
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202 { |
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203 transApi->Invalidate( MAknListBoxTfxInternal::EListItem, aItemIndex ); |
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204 } |
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205 #endif // RD_UI_TRANSITION_EFFECTS_LIST |
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206 iSelectionIndexes->AppendL(aItemIndex); |
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207 DrawItem(aItemIndex); |
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208 } |
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209 _AKNTRACE_FUNC_EXIT; |
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210 } |
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211 |
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212 EXPORT_C void CListBoxView::DeselectItem(TInt aItemIndex) |
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213 { |
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214 // deselect the specified item; if not currently selected, do nothing |
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215 _AKNTRACE_FUNC_ENTER; |
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216 _AKNTRACE( "DeselectItem is %d", aItemIndex ); |
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217 __ASSERT_DEBUG(iSelectionIndexes, Panic(EEikPanicListBoxNoSelIndexArray)); |
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218 TKeyArrayFix key(0, ECmpTInt); |
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219 TInt pos; |
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220 if (!(iSelectionIndexes->Find(aItemIndex, key, pos))) |
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221 { |
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222 #ifdef RD_UI_TRANSITION_EFFECTS_LIST |
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223 MAknListBoxTfxInternal* transApi = CAknListLoader::TfxApiInternal( iGc ); |
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224 if ( transApi ) |
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225 { |
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226 transApi->Invalidate( MAknListBoxTfxInternal::EListItem, aItemIndex ); |
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227 } |
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228 #endif // RD_UI_TRANSITION_EFFECTS_LIST |
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229 iSelectionIndexes->Delete(pos); |
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230 DrawItem(aItemIndex); |
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231 } |
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232 _AKNTRACE_FUNC_EXIT; |
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233 } |
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234 |
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235 EXPORT_C void CListBoxView::GetSelectionIndexesL(CSelectionIndexArray *aSelectionArray) const |
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236 { |
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237 __ASSERT_DEBUG(aSelectionArray, Panic(EEikPanicListBoxInvalidSelIndexArraySpecified)); |
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238 __ASSERT_DEBUG(iSelectionIndexes, Panic(EEikPanicListBoxNoSelIndexArray)); |
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239 aSelectionArray->Reset(); |
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240 TInt selectionIndex; |
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241 TInt numOfSelections = iSelectionIndexes->Count(); |
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242 for (TInt i = 0; i < numOfSelections; i++) |
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243 { |
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244 selectionIndex = (*(iSelectionIndexes))[i]; |
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245 aSelectionArray->AppendL(selectionIndex); |
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246 } |
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247 } |
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248 |
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249 EXPORT_C void CListBoxView::SetSelectionIndexesL(const CSelectionIndexArray *aSelectionArray) |
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250 { |
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251 __ASSERT_DEBUG(aSelectionArray, Panic(EEikPanicListBoxInvalidSelIndexArraySpecified)); |
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252 ClearSelection(); |
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253 TInt numOfSelections = aSelectionArray->Count(); |
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254 TInt selectionIndex; |
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255 for (TInt i = 0; i < numOfSelections; i++) |
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256 { |
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257 selectionIndex = (*aSelectionArray)[i]; |
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258 SelectItemL(selectionIndex); |
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259 } |
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260 } |
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261 |
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262 EXPORT_C const CListBoxView::CSelectionIndexArray* CListBoxView::SelectionIndexes() const |
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263 { |
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264 return iSelectionIndexes; |
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265 } |
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266 |
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267 EXPORT_C void CListBoxView::ClearSelection() |
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268 { |
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269 _AKNTRACE_FUNC_ENTER; |
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270 __ASSERT_DEBUG(iSelectionIndexes, Panic(EEikPanicListBoxNoSelIndexArray)); |
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271 TInt numSelectedItems = iSelectionIndexes->Count(); |
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272 TInt selectedItemIndex; |
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273 for (TInt i = 0; i < numSelectedItems; i++) |
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274 { |
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275 selectedItemIndex = (*(iSelectionIndexes))[0]; |
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276 DeselectItem(selectedItemIndex); |
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277 } |
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278 ClearSelectionAnchorAndActiveIndex(); |
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279 _AKNTRACE_FUNC_EXIT; |
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280 } |
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281 |
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282 EXPORT_C void CListBoxView::ClearSelectionAnchorAndActiveIndex() |
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283 { |
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284 _AKNTRACE_FUNC_ENTER; |
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285 iAnchorIndex = 0; |
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286 iActiveEndIndex = 0; |
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287 ClearFlags(EAnchorExists); |
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288 ClearFlags(EMarkSelection); |
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289 ClearFlags(EUnmarkSelection); |
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290 _AKNTRACE_FUNC_EXIT; |
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291 } |
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292 |
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293 EXPORT_C void CListBoxView::SelectRangeL(TInt aItemIndex1, TInt aItemIndex2) |
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294 { |
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295 TInt startItem, endItem; |
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296 startItem = Min(aItemIndex1, aItemIndex2); |
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297 endItem = Max(aItemIndex1, aItemIndex2); |
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298 for (TInt i = startItem; i <= endItem; i++) |
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299 SelectItemL(i); |
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300 } |
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301 |
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302 EXPORT_C void CListBoxView::SetAnchor(TInt aItemIndex) |
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303 { |
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304 SetFlags(EAnchorExists); |
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305 iAnchorIndex = aItemIndex; |
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306 iActiveEndIndex = aItemIndex; |
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307 } |
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308 |
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309 EXPORT_C void CListBoxView::UpdateSelectionL(TSelectionMode aSelectionMode) |
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310 { |
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311 // assumes that iCurrentItemIndex has already been updated... |
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312 _AKNTRACE_FUNC_ENTER; |
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313 _AKNTRACE( "aSelectionMode is %d", aSelectionMode ); |
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314 if (iCurrentItemIndex == -1) // i.e. no selection |
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315 { |
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316 ClearSelection(); |
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317 _AKNTRACE_FUNC_EXIT; |
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318 return; |
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319 } |
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320 TInt newActiveEndIndex = iCurrentItemIndex; |
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321 |
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322 if ( Flags() & EPaintedSelection ) |
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323 { |
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324 switch (aSelectionMode) |
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325 { |
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326 case ENoSelection: |
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327 { |
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328 ClearFlags(EAnchorExists); |
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329 iActiveEndIndex = iCurrentItemIndex; |
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330 DrawItem(iCurrentItemIndex); |
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331 break; |
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332 } |
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333 case ESingleSelection: |
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334 { |
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335 TInt i = 0; |
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336 iAnchorIndex = iCurrentItemIndex; |
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337 iActiveEndIndex = iCurrentItemIndex; |
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338 SetFlags(EAnchorExists); |
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339 TInt selectedItemIndex; |
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340 while (i < iSelectionIndexes->Count()) |
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341 { |
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342 selectedItemIndex = (*(iSelectionIndexes))[i]; |
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343 DeselectItem(selectedItemIndex); |
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344 } |
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345 //DrawItem(iActiveEndIndex); |
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346 SelectItemL(newActiveEndIndex); |
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347 } |
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348 break; |
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349 case EContiguousSelection: |
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350 { |
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351 if (newActiveEndIndex == iActiveEndIndex) |
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352 break; |
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353 |
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354 if (!(iFlags & EAnchorExists)) |
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355 { |
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356 iAnchorIndex = newActiveEndIndex; |
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357 SetFlags(EAnchorExists); |
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358 } |
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359 |
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360 TInt startIndex=0, endIndex=0; |
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361 if ( iActiveEndIndex < newActiveEndIndex ) |
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362 { |
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363 startIndex = iActiveEndIndex; |
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364 endIndex = newActiveEndIndex; // - 1; // select current item too |
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365 } |
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366 else |
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367 { |
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368 startIndex = newActiveEndIndex; // + 1; // select current item too |
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369 endIndex = iActiveEndIndex; |
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370 } |
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371 SelectRangeL( startIndex, endIndex ); // select always |
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372 |
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373 iActiveEndIndex = iCurrentItemIndex; |
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374 DrawItem(iActiveEndIndex); |
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375 } |
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376 break; |
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377 case EDisjointSelection: |
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378 ClearFlags(EAnchorExists); |
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379 ToggleItemL(newActiveEndIndex); |
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380 iActiveEndIndex = iCurrentItemIndex; |
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381 break; |
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382 default: |
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383 break; |
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384 } |
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385 } |
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386 else // Here begins the Eikon original code |
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387 { |
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388 switch (aSelectionMode) |
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389 { |
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390 case ENoSelection: |
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391 DrawItem(iCurrentItemIndex); |
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392 break; |
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393 case ESingleSelection: |
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394 { |
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395 TInt i = 0; |
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396 iAnchorIndex = newActiveEndIndex; |
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397 iActiveEndIndex = newActiveEndIndex; |
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398 SetFlags(EAnchorExists); |
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399 TInt selectedItemIndex; |
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400 // deselect everything except newActiveEndIndex |
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401 while (i < iSelectionIndexes->Count()) |
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402 { |
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403 selectedItemIndex = (*(iSelectionIndexes))[i]; |
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404 DeselectItem(selectedItemIndex); |
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405 } |
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406 SelectItemL(newActiveEndIndex); |
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407 } |
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408 break; |
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409 case EContiguousSelection: |
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410 { |
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411 TInt itemIndex=0; |
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412 if (newActiveEndIndex == iActiveEndIndex) |
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413 break; |
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414 if (!(iFlags & EAnchorExists)) |
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415 { |
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416 iAnchorIndex = newActiveEndIndex; |
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417 iActiveEndIndex = newActiveEndIndex; |
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418 SetFlags(EAnchorExists); |
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419 SelectRangeL(iAnchorIndex, newActiveEndIndex); |
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420 break; |
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421 } |
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422 if ((newActiveEndIndex < iActiveEndIndex) && (iActiveEndIndex <= iAnchorIndex)) |
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423 SelectRangeL(iActiveEndIndex, newActiveEndIndex); |
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424 else if ((newActiveEndIndex < iActiveEndIndex) && (iActiveEndIndex > iAnchorIndex)) |
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425 { |
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426 itemIndex = iActiveEndIndex; |
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427 while ((itemIndex > newActiveEndIndex) && (itemIndex > iAnchorIndex)) |
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428 { |
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429 DeselectItem(itemIndex); |
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430 --itemIndex; |
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431 } |
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432 SelectRangeL(iAnchorIndex, newActiveEndIndex); |
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433 } |
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434 else if ((newActiveEndIndex > iActiveEndIndex) && (iActiveEndIndex < iAnchorIndex)) |
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435 { |
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436 itemIndex = iActiveEndIndex; |
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437 while ((itemIndex < newActiveEndIndex) && (itemIndex < iAnchorIndex)) |
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438 { |
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439 DeselectItem(itemIndex); |
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440 ++itemIndex; |
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441 } |
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442 SelectRangeL(iAnchorIndex, newActiveEndIndex); |
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443 } |
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444 else if ((newActiveEndIndex > iActiveEndIndex) && (iActiveEndIndex >= iAnchorIndex)) |
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445 SelectRangeL(iActiveEndIndex, newActiveEndIndex); |
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446 iActiveEndIndex = newActiveEndIndex; |
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447 DrawItem(iActiveEndIndex); |
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448 } |
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449 break; |
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450 case EDisjointSelection: // toggled behavior |
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451 // Make a choice whether to mark or unmark |
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452 // We havent made that choice yet. |
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453 if (!ItemIsSelected(newActiveEndIndex)) |
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454 { |
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455 SetFlags(EMarkSelection); |
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456 ClearFlags(EUnmarkSelection); |
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457 } |
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458 else |
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459 { |
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460 SetFlags(EUnmarkSelection); |
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461 ClearFlags(EMarkSelection); |
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462 } |
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463 |
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464 if (newActiveEndIndex == iActiveEndIndex) |
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465 { |
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466 ClearFlags(EAnchorExists); |
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467 ToggleItemL(newActiveEndIndex); |
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468 break; |
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469 } |
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470 iAnchorIndex = newActiveEndIndex; |
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471 iActiveEndIndex = newActiveEndIndex; |
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472 SetFlags(EAnchorExists); |
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473 ToggleItemL(newActiveEndIndex); |
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474 break; |
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475 case EDisjointMarkSelection: // can only mark items, not unmark them |
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476 // Make a choice whether to mark or unmark |
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477 if (! (Flags()&EMarkSelection ||Flags()&EUnmarkSelection)) |
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478 { |
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479 // We havent made that choice yet. |
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480 if (ItemIsSelected(iAnchorIndex)) |
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481 { |
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482 ClearFlags(EMarkSelection); |
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483 SetFlags(EUnmarkSelection); |
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484 } |
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485 else |
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486 { |
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487 ClearFlags(EUnmarkSelection); |
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488 SetFlags(EMarkSelection); |
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489 } |
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490 } |
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491 |
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492 // order of these is important. |
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493 if (Flags()&EMarkSelection) |
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494 SelectItemL(iActiveEndIndex); |
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495 else |
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496 DeselectItem(iActiveEndIndex); |
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497 //iAnchorIndex = newActiveEndIndex; |
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498 iActiveEndIndex = newActiveEndIndex; |
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499 //SetFlags(EAnchorExists); |
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500 if (Flags()&EMarkSelection) |
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501 SelectItemL(newActiveEndIndex); |
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502 else |
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503 DeselectItem(newActiveEndIndex); |
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504 DrawItem(iCurrentItemIndex); |
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505 break; |
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506 |
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507 case EChangeMarkMode: |
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508 { |
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509 // Clear flags, correct flag will be set on later. |
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510 ClearFlags(EMarkSelection); |
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511 ClearFlags(EUnmarkSelection); |
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512 |
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513 // If item is hidden, use next non-hidden item to decide markmode. |
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514 while( iItemDrawer->Properties(newActiveEndIndex).IsSelectionHidden() |
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515 && newActiveEndIndex != iActiveEndIndex ) |
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516 { |
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517 if ( newActiveEndIndex > iActiveEndIndex ) |
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518 { |
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519 newActiveEndIndex--; |
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520 } |
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521 else |
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522 { |
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523 newActiveEndIndex++; |
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524 } |
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525 } |
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526 |
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527 // Change Mark Mode to different than current mark is |
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528 if (ItemIsSelected(newActiveEndIndex)) |
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529 { |
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530 SetFlags(EUnmarkSelection); |
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531 } |
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532 else |
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533 { |
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534 SetFlags(EMarkSelection); |
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535 } |
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536 } |
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537 break; |
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538 |
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539 case EPenMultiselection: |
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540 { |
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541 TInt itemIndex=0; |
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542 TBool mark = (Flags() & EMarkSelection); |
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543 |
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544 if ((newActiveEndIndex < iActiveEndIndex) && (iActiveEndIndex <= iAnchorIndex)) |
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545 { |
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546 if ( mark ) |
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547 { |
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548 SelectRangeL(iActiveEndIndex, newActiveEndIndex); |
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549 } |
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550 else |
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551 { |
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552 DeselectRangeL(iActiveEndIndex, newActiveEndIndex); |
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553 } |
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554 } |
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555 else if ((newActiveEndIndex < iActiveEndIndex) && (iActiveEndIndex > iAnchorIndex)) |
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556 { |
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557 itemIndex = iActiveEndIndex; |
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558 while ((itemIndex > newActiveEndIndex) && (itemIndex > iAnchorIndex)) |
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559 { |
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560 if ( mark ) |
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561 { |
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562 DeselectItem(itemIndex); |
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563 } |
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564 else |
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565 { |
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566 SelectItemL(itemIndex); |
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567 } |
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568 --itemIndex; |
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569 } |
|
570 |
|
571 if ( mark ) |
|
572 { |
|
573 SelectRangeL(iAnchorIndex, newActiveEndIndex); |
|
574 } |
|
575 else |
|
576 { |
|
577 DeselectRangeL(iAnchorIndex, newActiveEndIndex); |
|
578 } |
|
579 } |
|
580 else if ((newActiveEndIndex > iActiveEndIndex) && (iActiveEndIndex < iAnchorIndex)) |
|
581 { |
|
582 itemIndex = iActiveEndIndex; |
|
583 while ((itemIndex < newActiveEndIndex) && (itemIndex < iAnchorIndex)) |
|
584 { |
|
585 if ( mark ) |
|
586 { |
|
587 DeselectItem(itemIndex); |
|
588 } |
|
589 else |
|
590 { |
|
591 SelectItemL(itemIndex); |
|
592 }; |
|
593 |
|
594 ++itemIndex; |
|
595 } |
|
596 if ( mark ) |
|
597 { |
|
598 SelectRangeL(iAnchorIndex, newActiveEndIndex); |
|
599 } |
|
600 else |
|
601 { |
|
602 DeselectRangeL(iAnchorIndex, newActiveEndIndex); |
|
603 } |
|
604 } |
|
605 // "=" is necessary for Editkey + sigle tab on an item |
|
606 else if ((newActiveEndIndex >= iActiveEndIndex) && (iActiveEndIndex >= iAnchorIndex)) |
|
607 { |
|
608 if ( mark ) |
|
609 { |
|
610 SelectRangeL(iActiveEndIndex, newActiveEndIndex); |
|
611 } |
|
612 else |
|
613 { |
|
614 DeselectRangeL(iAnchorIndex, newActiveEndIndex); |
|
615 } |
|
616 } |
|
617 |
|
618 iActiveEndIndex = newActiveEndIndex; |
|
619 |
|
620 DrawItem(iActiveEndIndex); |
|
621 |
|
622 break; |
|
623 } |
|
624 |
|
625 default: |
|
626 break; |
|
627 } |
|
628 } |
|
629 _AKNTRACE_FUNC_EXIT; |
|
630 } |
|
631 |
|
632 EXPORT_C void CListBoxView::CalcBottomItemIndex() |
|
633 /* called by listbox control when either the size of the listbox or the number of items in |
|
634 its model changes |
|
635 */ |
|
636 { |
|
637 _AKNTRACE_FUNC_ENTER; |
|
638 TInt i = iTopItemIndex; |
|
639 TInt totalHeight = 0; |
|
640 TInt numberOfVisibleItems = 0; |
|
641 // iVerticalOffset is negative (add this to view's height) |
|
642 TInt viewHeight = iViewRect.Height(); |
|
643 viewHeight -= iVerticalOffset; |
|
644 |
|
645 ITEM_EXISTS_BEGIN; |
|
646 while ((totalHeight < viewHeight) && (ITEM_EXISTS(i))) |
|
647 { |
|
648 totalHeight += iItemHeight; |
|
649 ++ i; |
|
650 ++ numberOfVisibleItems; |
|
651 } |
|
652 |
|
653 iBottomItemIndex = Max(0, iTopItemIndex + numberOfVisibleItems - 1); |
|
654 _AKNTRACE( "iBottomItemIndex is %d", iBottomItemIndex ); |
|
655 _AKNTRACE_FUNC_EXIT; |
|
656 } |
|
657 |
|
658 EXPORT_C TInt CListBoxView::NumberOfItemsThatFitInRect(const TRect& aRect) const |
|
659 { |
|
660 if (iItemHeight == 0) |
|
661 { |
|
662 _AKNTRACE( "Number of items is 0" ); |
|
663 return 0; |
|
664 } |
|
665 TInt items = aRect.Height() / iItemHeight; |
|
666 if ( ( iVerticalOffset != 0 ) || ( (aRect.Height() - iVerticalOffset) % iItemHeight > 0 ) ) items++; |
|
667 _AKNTRACE( "Number of items is %d", items ); |
|
668 return items; |
|
669 } |
|
670 |
|
671 EXPORT_C void CListBoxView::DeselectRangeL(TInt aItemIndex1, TInt aItemIndex2) |
|
672 { |
|
673 TInt startItem, endItem; |
|
674 startItem = Min(aItemIndex1, aItemIndex2); |
|
675 endItem = Max(aItemIndex1, aItemIndex2); |
|
676 for (TInt i = startItem; i <= endItem; i++) |
|
677 { |
|
678 DeselectItem(i); |
|
679 } |
|
680 } |
|
681 |
|
682 EXPORT_C TBool CListBoxView::ItemIsVisible(TInt aItemIndex) const |
|
683 { |
|
684 if ((aItemIndex == 0) && !(ITEM_EXISTS_ONCE(aItemIndex))) |
|
685 return EFalse; |
|
686 |
|
687 return ((aItemIndex >= iTopItemIndex) && (aItemIndex <= iBottomItemIndex)); |
|
688 } |
|
689 |
|
690 EXPORT_C TPoint CListBoxView::ItemPos(TInt aItemIndex) const |
|
691 { |
|
692 return TPoint(-iHScrollOffset + iViewRect.iTl.iX, iViewRect.iTl.iY + |
|
693 (aItemIndex - iTopItemIndex) * iItemHeight + iVerticalOffset); |
|
694 } |
|
695 |
|
696 EXPORT_C TSize CListBoxView::ItemSize(TInt /*aItemIndex*/) const |
|
697 { |
|
698 /*This return value controls the actual size of item which the text may |
|
699 or may not be clipped and truncated with an ellipse to fit into*/ |
|
700 return TSize(LafListBoxView::ItemWidth(iViewRect.Width(), DataWidth()), iItemHeight); |
|
701 } |
|
702 |
|
703 EXPORT_C TBool CListBoxView::XYPosToItemIndex(TPoint aPosition, TInt& aItemIndex) const |
|
704 { |
|
705 // returns ETrue and sets aItemIndex to the index of the item whose bounding box contains aPosition |
|
706 // returns EFalse if no such item exists |
|
707 _AKNTRACE_FUNC_ENTER; |
|
708 TBool itemFound = EFalse; |
|
709 if (iItemHeight == 0) |
|
710 { |
|
711 _AKNTRACE_FUNC_EXIT; |
|
712 return EFalse; |
|
713 } |
|
714 if (iViewRect.Contains(aPosition)) |
|
715 { |
|
716 // aPosition is inside the display area |
|
717 TInt yOffsetFromViewRectOrigin = aPosition.iY - iViewRect.iTl.iY - iVerticalOffset; |
|
718 TInt numberOfItemsFromTheTop = yOffsetFromViewRectOrigin / iItemHeight; |
|
719 TInt itemAtSpecifiedPos = iTopItemIndex + numberOfItemsFromTheTop; |
|
720 if (ITEM_EXISTS_ONCE(itemAtSpecifiedPos)) |
|
721 { |
|
722 aItemIndex = itemAtSpecifiedPos; |
|
723 itemFound = ETrue; |
|
724 } |
|
725 } |
|
726 _AKNTRACE_FUNC_EXIT; |
|
727 return itemFound; |
|
728 } |
|
729 |
|
730 EXPORT_C void CListBoxView::MoveCursorL(TCursorMovement aCursorMovement, TSelectionMode aSelectionMode) |
|
731 { |
|
732 _AKNTRACE_FUNC_ENTER; |
|
733 _AKNTRACE( "aSelectionMode is %d", aSelectionMode ); |
|
734 TInt pageSize = NumberOfItemsThatFitInRect(iViewRect); |
|
735 TInt numOfItems = iModel->NumberOfItems(); |
|
736 switch (aCursorMovement) |
|
737 { |
|
738 case ECursorNextItem: |
|
739 VerticalMoveToItemL(iCurrentItemIndex + 1, aSelectionMode); |
|
740 break; |
|
741 case ECursorPreviousItem: |
|
742 VerticalMoveToItemL(iCurrentItemIndex - 1, aSelectionMode); |
|
743 break; |
|
744 case ECursorNextPage: |
|
745 VerticalMoveToItemL(iCurrentItemIndex + Min((pageSize - 1), numOfItems - 1 - iCurrentItemIndex), |
|
746 aSelectionMode); |
|
747 break; |
|
748 case ECursorPreviousPage: |
|
749 VerticalMoveToItemL(iCurrentItemIndex - Min((pageSize - 1), iCurrentItemIndex), |
|
750 aSelectionMode); |
|
751 break; |
|
752 case ECursorFirstItem: |
|
753 VerticalMoveToItemL(0, aSelectionMode); |
|
754 break; |
|
755 case ECursorLastItem: |
|
756 if (numOfItems > 0) |
|
757 VerticalMoveToItemL(numOfItems-1, aSelectionMode); |
|
758 break; |
|
759 |
|
760 case ECursorNextScreen: |
|
761 { |
|
762 TInt targetItem = iTopItemIndex + pageSize; |
|
763 if (targetItem > numOfItems - pageSize) targetItem = numOfItems - pageSize; |
|
764 if (targetItem < 0) targetItem = 0; |
|
765 VScrollTo(targetItem); |
|
766 SetCurrentItemIndex(targetItem); |
|
767 } |
|
768 break; |
|
769 case ECursorPrevScreen: |
|
770 { |
|
771 TInt targetItem = iTopItemIndex - pageSize; |
|
772 if (targetItem < 0) targetItem = 0; |
|
773 VScrollTo(targetItem); |
|
774 SetCurrentItemIndex(targetItem); |
|
775 } |
|
776 break; |
|
777 default: |
|
778 break; |
|
779 }; |
|
780 _AKNTRACE_FUNC_EXIT; |
|
781 } |
|
782 |
|
783 EXPORT_C void CListBoxView::VerticalMoveToItemL(TInt aTargetItemIndex, TSelectionMode aSelectionMode) |
|
784 { |
|
785 // SERIES60 IMPLEMENTATION |
|
786 _AKNTRACE_FUNC_ENTER; |
|
787 if (ITEM_EXISTS_ONCE(aTargetItemIndex)) |
|
788 { |
|
789 TInt oldCurrentItemIndex = iCurrentItemIndex; |
|
790 iCurrentItemIndex = aTargetItemIndex; |
|
791 |
|
792 |
|
793 TInt oldVerticalOffset = iVerticalOffset; |
|
794 TInt newTopItemIndex = CalcNewTopItemIndexSoItemIsVisible(aTargetItemIndex); |
|
795 if ( oldVerticalOffset != iVerticalOffset ) |
|
796 { |
|
797 iFlags |= EOffsetChanged; |
|
798 } |
|
799 |
|
800 TInt oldVOffset = oldCurrentItemIndex - iTopItemIndex; |
|
801 TInt newVOffset = aTargetItemIndex - newTopItemIndex; |
|
802 // We calculate if the change in highlight position moves highlight in screen |
|
803 TBool sameHighlightPos = oldVOffset == newVOffset; |
|
804 |
|
805 // When a partially visible item gets focus, it should be fully visible. |
|
806 // 'iFlags & EOffsetChanged' can be use to judge in this case. |
|
807 if ((ItemIsVisible(iCurrentItemIndex)) && !(iFlags & EOffsetChanged)) |
|
808 { |
|
809 if (!sameHighlightPos && |
|
810 (!ItemIsSelected(oldCurrentItemIndex) || |
|
811 aSelectionMode != ESingleSelection)) |
|
812 { |
|
813 DrawItem(oldCurrentItemIndex); |
|
814 } |
|
815 } |
|
816 else // items will get redrawn anyway |
|
817 { |
|
818 ScrollToMakeItemVisible(iCurrentItemIndex); |
|
819 } |
|
820 UpdateSelectionL(aSelectionMode); |
|
821 iFlags &= ~EOffsetChanged; |
|
822 } |
|
823 _AKNTRACE_FUNC_EXIT; |
|
824 } |
|
825 |
|
826 EXPORT_C void CListBoxView::VScrollTo(TInt aNewTopItemIndex) |
|
827 { |
|
828 _AKNTRACE_FUNC_ENTER; |
|
829 if (iTopItemIndex == aNewTopItemIndex && !(iFlags & EOffsetChanged)) |
|
830 { |
|
831 _AKNTRACE_FUNC_EXIT; |
|
832 return; |
|
833 } |
|
834 if (RedrawDisabled()) |
|
835 { |
|
836 SetTopItemIndex(aNewTopItemIndex); |
|
837 _AKNTRACE_FUNC_EXIT; |
|
838 return; |
|
839 } |
|
840 TRect minRedrawRect; |
|
841 HideMatcherCursor(); |
|
842 VScrollTo(aNewTopItemIndex, minRedrawRect); |
|
843 |
|
844 |
|
845 if (ItemIsVisible(iCurrentItemIndex)) |
|
846 DrawMatcherCursor(); |
|
847 _AKNTRACE_FUNC_EXIT; |
|
848 } |
|
849 |
|
850 EXPORT_C void CListBoxView::VScrollTo(TInt aNewTopItemIndex, TRect& aMinRedrawRect) |
|
851 { |
|
852 _AKNTRACE_FUNC_ENTER; |
|
853 if (iTopItemIndex == aNewTopItemIndex && !(iFlags & EOffsetChanged)) |
|
854 { |
|
855 _AKNTRACE_FUNC_EXIT; |
|
856 return; |
|
857 } |
|
858 if (RedrawDisabled()) |
|
859 { |
|
860 SetTopItemIndex(aNewTopItemIndex); |
|
861 _AKNTRACE_FUNC_EXIT; |
|
862 return; |
|
863 } |
|
864 aMinRedrawRect.SetRect(iViewRect.iTl,iViewRect.Size()); |
|
865 SetTopItemIndex(aNewTopItemIndex); |
|
866 Draw(&aMinRedrawRect); |
|
867 _AKNTRACE_FUNC_EXIT; |
|
868 } |
|
869 |
|
870 EXPORT_C void CListBoxView::HScroll(TInt aHScrollAmount) |
|
871 { |
|
872 _AKNTRACE_FUNC_ENTER; |
|
873 if (RedrawDisabled()) |
|
874 { |
|
875 _AKNTRACE_FUNC_EXIT; |
|
876 return; |
|
877 } |
|
878 if (aHScrollAmount == 0) |
|
879 { |
|
880 _AKNTRACE_FUNC_EXIT; |
|
881 return; |
|
882 } |
|
883 TInt maxNumOfPixelsScrolledRight = DataWidth() - VisibleWidth(iViewRect); |
|
884 if (maxNumOfPixelsScrolledRight <= 0) |
|
885 { |
|
886 _AKNTRACE_FUNC_EXIT; |
|
887 return; |
|
888 } |
|
889 TInt oldHScrollOffset = iHScrollOffset; |
|
890 iHScrollOffset += aHScrollAmount; |
|
891 iHScrollOffset = Max(0, Min(iHScrollOffset, maxNumOfPixelsScrolledRight)); |
|
892 DrawMatcherCursor(); |
|
893 TInt actualScrollAmount = iHScrollOffset - oldHScrollOffset; |
|
894 iWin->Scroll(iViewRect, TPoint(-actualScrollAmount, 0)); |
|
895 TRect redrawRect(iViewRect.iTl+TPoint(iViewRect.Width()-actualScrollAmount,0),TSize(actualScrollAmount,iViewRect.Height())); |
|
896 if (actualScrollAmount<0) |
|
897 redrawRect.SetRect(iViewRect.iTl,TSize(-actualScrollAmount,iViewRect.Height())); |
|
898 redrawRect.Intersection(iViewRect); |
|
899 iItemDrawer->Gc()->Clear( redrawRect ); |
|
900 iWin->Invalidate(redrawRect); |
|
901 iWin->BeginRedraw(redrawRect); |
|
902 Draw(&redrawRect); |
|
903 iWin->EndRedraw(); |
|
904 _AKNTRACE_FUNC_EXIT; |
|
905 } |
|
906 |
|
907 EXPORT_C TInt CListBoxView::HScrollOffset() const |
|
908 { |
|
909 return iHScrollOffset; |
|
910 } |
|
911 |
|
912 EXPORT_C void CListBoxView::SetHScrollOffset(TInt aHScrollOffset) |
|
913 { |
|
914 iHScrollOffset = aHScrollOffset; |
|
915 } |
|
916 |
|
917 EXPORT_C void CListBoxView::SetItemHeight(TInt aItemHeight) |
|
918 { |
|
919 _AKNTRACE_FUNC_ENTER; |
|
920 _AKNTRACE( "aItemHeight is %d", aItemHeight ); |
|
921 SetItemOffsetInPixels( 0 ); |
|
922 iItemHeight = aItemHeight; |
|
923 iItemDrawer->SetItemCellSize(ItemSize()); |
|
924 _AKNTRACE_FUNC_EXIT; |
|
925 } |
|
926 |
|
927 EXPORT_C void CListBoxView::SetViewRect(const TRect& aRect) |
|
928 { |
|
929 if ( aRect != iViewRect && iViewRect != TRect::EUninitialized ) |
|
930 { |
|
931 iGc->Deactivate(); |
|
932 iGc->Activate( *iWin ); |
|
933 } |
|
934 |
|
935 iViewRect = aRect; |
|
936 iItemDrawer->SetViewRect(iViewRect); |
|
937 iItemDrawer->SetItemCellSize(ItemSize()); |
|
938 } |
|
939 |
|
940 EXPORT_C TRect CListBoxView::ViewRect() const |
|
941 { |
|
942 return iViewRect; |
|
943 } |
|
944 |
|
945 EXPORT_C void CListBoxView::DrawItem(TInt aItemIndex) const |
|
946 { |
|
947 _AKNTRACE_FUNC_ENTER; |
|
948 if (RedrawDisabled() || !IsVisible()) |
|
949 { |
|
950 _AKNTRACE_FUNC_EXIT; |
|
951 return; |
|
952 } |
|
953 |
|
954 TBool transparencyEnabled( CAknEnv::Static()->TransparencyEnabled() ); |
|
955 |
|
956 if ((ITEM_EXISTS_ONCE(aItemIndex)) && ItemIsVisible(aItemIndex)) |
|
957 { |
|
958 TBool drawingInitiated = ETrue; |
|
959 |
|
960 if ( transparencyEnabled ) |
|
961 { |
|
962 if ( iWin && iWin->GetDrawRect() == TRect::EUninitialized ) |
|
963 { |
|
964 #ifdef RD_UI_TRANSITION_EFFECTS_LIST |
|
965 MAknListBoxTfxInternal* transApi = |
|
966 CAknListLoader::TfxApiInternal( iGc ); |
|
967 drawingInitiated = transApi && !transApi->EffectsDisabled(); |
|
968 #else |
|
969 drawingInitiated = EFalse; |
|
970 #endif |
|
971 } |
|
972 |
|
973 if ( !drawingInitiated ) |
|
974 { |
|
975 TRect rect( ItemPos(aItemIndex), ItemSize(aItemIndex) ); |
|
976 rect.Intersection( iViewRect ); |
|
977 iWin->Invalidate( rect ); |
|
978 iWin->BeginRedraw( rect ); |
|
979 } |
|
980 } |
|
981 |
|
982 #ifdef RD_UI_TRANSITION_EFFECTS_LIST |
|
983 MAknListBoxTfxInternal *transApi = CAknListLoader::TfxApiInternal( iGc ); |
|
984 if ( transApi ) |
|
985 { |
|
986 TRect rect( ItemPos( aItemIndex ), |
|
987 ItemSize(aItemIndex) ); |
|
988 transApi->BeginRedraw( MAknListBoxTfxInternal::EListItem, rect, aItemIndex ); |
|
989 transApi->StartDrawing( MAknListBoxTfxInternal::EListItem ); |
|
990 } |
|
991 #endif // RD_UI_TRANSITION_EFFECTS_LIST |
|
992 |
|
993 iGc->SetClippingRect( iViewRect ); |
|
994 |
|
995 #ifdef RD_UI_TRANSITION_EFFECTS_LIST |
|
996 if ( transApi ) |
|
997 { |
|
998 transApi->StopDrawing(); |
|
999 } |
|
1000 #endif // RD_UI_TRANSITION_EFFECTS_LIST |
|
1001 |
|
1002 TBool currentItem = (aItemIndex == iCurrentItemIndex); |
|
1003 |
|
1004 iItemDrawer->DrawItem(aItemIndex, ItemPos(aItemIndex), ItemIsSelected(aItemIndex), |
|
1005 currentItem, (iFlags&EEmphasized)>0, (iFlags&EDimmed)>0 ); |
|
1006 |
|
1007 #ifdef RD_UI_TRANSITION_EFFECTS_LIST |
|
1008 if ( transApi ) |
|
1009 { |
|
1010 transApi->StartDrawing( MAknListBoxTfxInternal::EListItem ); |
|
1011 } |
|
1012 #endif // RD_UI_TRANSITION_EFFECTS_LIST |
|
1013 |
|
1014 iGc->CancelClippingRect(); |
|
1015 |
|
1016 #ifdef RD_UI_TRANSITION_EFFECTS_LIST |
|
1017 if ( transApi ) |
|
1018 { |
|
1019 transApi->StopDrawing(); |
|
1020 } |
|
1021 #endif // RD_UI_TRANSITION_EFFECTS_LIST |
|
1022 |
|
1023 #ifdef RD_UI_TRANSITION_EFFECTS_LIST |
|
1024 if ( transApi ) |
|
1025 { |
|
1026 transApi->EndRedraw( MAknListBoxTfxInternal::EListItem, aItemIndex ); |
|
1027 } |
|
1028 #endif // RD_UI_TRANSITION_EFFECTS_LIST |
|
1029 |
|
1030 if ( transparencyEnabled && !drawingInitiated ) |
|
1031 { |
|
1032 iWin->EndRedraw(); |
|
1033 } |
|
1034 } |
|
1035 _AKNTRACE_FUNC_EXIT; |
|
1036 } |
|
1037 |
|
1038 |
|
1039 EXPORT_C void CListBoxView::Draw( const TRect* /*aClipRect*/ ) const |
|
1040 { |
|
1041 _AKNTRACE_FUNC_ENTER; |
|
1042 if ( RedrawDisabled() || !IsVisible() ) |
|
1043 { |
|
1044 _AKNTRACE_FUNC_EXIT; |
|
1045 return; |
|
1046 } |
|
1047 |
|
1048 __ASSERT_DEBUG( iModel, Panic( EEikPanicListBoxNoModel ) ); |
|
1049 |
|
1050 if ( iModel->NumberOfItems() == 0 ) |
|
1051 { |
|
1052 //DrawEmptyList(); |
|
1053 } |
|
1054 else |
|
1055 { |
|
1056 TInt firstPotentialItemIndex = iTopItemIndex; |
|
1057 TInt lastPotentialItemIndex = |
|
1058 iTopItemIndex + NumberOfItemsThatFitInRect( iViewRect ) - 1; |
|
1059 TInt i; |
|
1060 ITEM_EXISTS_BEGIN; |
|
1061 for ( i = firstPotentialItemIndex; i <= lastPotentialItemIndex; i++ ) |
|
1062 { |
|
1063 if ( ITEM_EXISTS( i ) ) |
|
1064 { |
|
1065 DrawItem( i ); |
|
1066 } |
|
1067 else |
|
1068 { |
|
1069 break; |
|
1070 } |
|
1071 } |
|
1072 |
|
1073 #ifdef RD_UI_TRANSITION_EFFECTS_LIST |
|
1074 MAknListBoxTfxInternal* transApi = CAknListLoader::TfxApiInternal( iGc ); |
|
1075 if ( transApi ) |
|
1076 { |
|
1077 transApi->StartDrawing( MAknListBoxTfxInternal::EListView ); |
|
1078 } |
|
1079 #endif // RD_UI_TRANSITION_EFFECTS_LIST |
|
1080 |
|
1081 TBool backgroundDrawn( EFalse ); |
|
1082 TRect usedPortionOfViewRect( |
|
1083 iViewRect.iTl, |
|
1084 TSize( iViewRect.Width(), |
|
1085 ( i - firstPotentialItemIndex ) * iItemHeight ) ); |
|
1086 |
|
1087 if ( iExtension && iExtension->iListBox ) |
|
1088 { |
|
1089 MAknsSkinInstance* skin = AknsUtils::SkinInstance(); |
|
1090 MAknsControlContext* cc = |
|
1091 AknsDrawUtils::ControlContext( iExtension->iListBox ); |
|
1092 |
|
1093 if ( cc ) |
|
1094 { |
|
1095 backgroundDrawn = |
|
1096 AknsDrawUtils::BackgroundBetweenRects( skin, |
|
1097 cc, |
|
1098 iExtension->iListBox, |
|
1099 *iItemDrawer->Gc(), |
|
1100 iViewRect, |
|
1101 usedPortionOfViewRect ); |
|
1102 } |
|
1103 } |
|
1104 |
|
1105 if ( !backgroundDrawn ) |
|
1106 { |
|
1107 iItemDrawer->Gc()->SetBrushColor( iBackColor ); |
|
1108 DrawUtils::ClearBetweenRects( *iItemDrawer->Gc(), |
|
1109 iViewRect, |
|
1110 usedPortionOfViewRect ); |
|
1111 } |
|
1112 |
|
1113 #ifdef RD_UI_TRANSITION_EFFECTS_LIST |
|
1114 if ( transApi ) |
|
1115 { |
|
1116 transApi->StopDrawing(); |
|
1117 } |
|
1118 #endif // RD_UI_TRANSITION_EFFECTS_LIST |
|
1119 } |
|
1120 _AKNTRACE_FUNC_EXIT; |
|
1121 } |
|
1122 |
|
1123 |
|
1124 EXPORT_C void CListBoxView::SetTopItemIndex(TInt aNewTopItemIndex) |
|
1125 { |
|
1126 _AKNTRACE_FUNC_ENTER; |
|
1127 TBool validIndex = (aNewTopItemIndex == 0) || (ITEM_EXISTS_ONCE(aNewTopItemIndex)); |
|
1128 __ASSERT_ALWAYS(validIndex, Panic(EEikPanicListBoxInvalidTopItemIndexSpecified)); |
|
1129 iTopItemIndex = aNewTopItemIndex; |
|
1130 CalcBottomItemIndex(); |
|
1131 _AKNTRACE_FUNC_EXIT; |
|
1132 } |
|
1133 |
|
1134 EXPORT_C void CListBoxView::SetCurrentItemIndex(TInt aItemIndex) |
|
1135 { |
|
1136 _AKNTRACE_FUNC_ENTER; |
|
1137 TBool validIndex = (aItemIndex == 0) || (ITEM_EXISTS_ONCE(aItemIndex)); |
|
1138 __ASSERT_ALWAYS(validIndex, Panic(EEikPanicListBoxInvalidCurrentItemIndexSpecified)); |
|
1139 iCurrentItemIndex = aItemIndex; |
|
1140 _AKNTRACE_FUNC_EXIT; |
|
1141 } |
|
1142 |
|
1143 EXPORT_C TInt CListBoxView::CurrentItemIndex() const |
|
1144 { |
|
1145 if (ITEM_EXISTS_ONCE(iCurrentItemIndex)) |
|
1146 return iCurrentItemIndex; |
|
1147 else |
|
1148 return -1; // means there is no current item |
|
1149 } |
|
1150 |
|
1151 EXPORT_C TBool CListBoxView::ScrollToMakeItemVisible(TInt aItemIndex) |
|
1152 { |
|
1153 _AKNTRACE_FUNC_ENTER; |
|
1154 TInt oldVerticalOffset = iVerticalOffset; |
|
1155 TInt newTopItemIndex = CalcNewTopItemIndexSoItemIsVisible( aItemIndex ); |
|
1156 |
|
1157 if ( ( ItemIsVisible( aItemIndex ) || aItemIndex < 0 ) |
|
1158 && iVerticalOffset == oldVerticalOffset |
|
1159 && !(iFlags & EOffsetChanged) ) |
|
1160 { |
|
1161 _AKNTRACE_FUNC_EXIT; |
|
1162 return EFalse; |
|
1163 } |
|
1164 |
|
1165 if ( iVerticalOffset != oldVerticalOffset ) |
|
1166 { |
|
1167 iFlags |= EOffsetChanged; |
|
1168 } |
|
1169 |
|
1170 VScrollTo( newTopItemIndex ); |
|
1171 |
|
1172 iFlags &= ~EOffsetChanged; |
|
1173 |
|
1174 _AKNTRACE_FUNC_EXIT; |
|
1175 return ETrue; |
|
1176 } |
|
1177 |
|
1178 EXPORT_C TInt CListBoxView::CalcNewTopItemIndexSoItemIsVisible(TInt aItemIndex) const |
|
1179 { |
|
1180 _AKNTRACE_FUNC_ENTER; |
|
1181 #ifdef _DEBUG |
|
1182 RDebug::Print( _L( "CListBoxView::CalcNewTopItemIndexSoItemIsVisible" ) ); |
|
1183 #endif // _DEBUG |
|
1184 TInt newTopItemIndex=iTopItemIndex; |
|
1185 const TInt numItemsThatFitInRect=NumberOfItemsThatFitInRect(iViewRect); |
|
1186 if (aItemIndex < iTopItemIndex || numItemsThatFitInRect == 0) |
|
1187 newTopItemIndex = aItemIndex; |
|
1188 else if (aItemIndex > iBottomItemIndex) |
|
1189 newTopItemIndex = aItemIndex - numItemsThatFitInRect + 1; |
|
1190 |
|
1191 if (!ITEM_EXISTS_ONCE(newTopItemIndex) && newTopItemIndex != 0 ) |
|
1192 { // if application fails to call HandleItemAdditionL(), we might go here. |
|
1193 // we dont want our OfferKeyEventL() to panic in that case. |
|
1194 newTopItemIndex = iTopItemIndex; |
|
1195 } |
|
1196 |
|
1197 CListBoxView* me = const_cast<CListBoxView*>( this ); |
|
1198 // change vertical offset value if needed |
|
1199 if ( aItemIndex <= iTopItemIndex && iVerticalOffset < 0 ) |
|
1200 { |
|
1201 me->SetItemOffsetInPixels( 0 ); |
|
1202 } |
|
1203 else if ( aItemIndex >= iBottomItemIndex && aItemIndex >= ( numItemsThatFitInRect - 1 ) ) |
|
1204 { |
|
1205 TInt delta = iViewRect.Height() % iItemHeight; |
|
1206 |
|
1207 if ( delta > 0 ) |
|
1208 { |
|
1209 me->SetItemOffsetInPixels( -( iItemHeight - delta ) ); |
|
1210 } |
|
1211 else |
|
1212 { |
|
1213 me->SetItemOffsetInPixels( 0 ); |
|
1214 } |
|
1215 } |
|
1216 |
|
1217 _AKNTRACE_FUNC_EXIT; |
|
1218 return newTopItemIndex; |
|
1219 } |
|
1220 |
|
1221 EXPORT_C void CListBoxView::DrawMatcherCursor() |
|
1222 { |
|
1223 // DrawMatcherCursor code is broken in S60, it will crash some lists. There |
|
1224 // is no need to draw matcher cursor in S60 -> deprecated method. |
|
1225 } |
|
1226 |
|
1227 EXPORT_C void CListBoxView::HideMatcherCursor() |
|
1228 { |
|
1229 if (!(iFlags & EHasMatcherCursor)) |
|
1230 return; |
|
1231 iGroupWin->CancelTextCursor(); |
|
1232 } |
|
1233 |
|
1234 EXPORT_C void CListBoxView::SetMatcherCursorPos(TInt aPosWithinCurrentItem) |
|
1235 { |
|
1236 iMatcherCursorPos = aPosWithinCurrentItem; |
|
1237 } |
|
1238 |
|
1239 EXPORT_C TInt CListBoxView::MatcherCursorPos() const |
|
1240 { |
|
1241 return iMatcherCursorPos; |
|
1242 } |
|
1243 |
|
1244 EXPORT_C void CListBoxView::SetMatcherCursorColor(TRgb aColor) |
|
1245 { |
|
1246 iMatcherCursorColor = aColor; |
|
1247 } |
|
1248 |
|
1249 EXPORT_C void CListBoxView::SetMatcherCursor(TBool aMatcherCursor) |
|
1250 { |
|
1251 if (aMatcherCursor) |
|
1252 SetFlags(EHasMatcherCursor); |
|
1253 else |
|
1254 ClearFlags(EHasMatcherCursor); |
|
1255 } |
|
1256 |
|
1257 EXPORT_C void CListBoxView::SetEmphasized(TBool aEmphasized) |
|
1258 { |
|
1259 if (aEmphasized) |
|
1260 SetFlags(EEmphasized); |
|
1261 else |
|
1262 ClearFlags(EEmphasized); |
|
1263 } |
|
1264 |
|
1265 EXPORT_C void CListBoxView::SetDimmed(TBool aDimmed) |
|
1266 { |
|
1267 if (aDimmed) |
|
1268 SetFlags(EDimmed); |
|
1269 else |
|
1270 ClearFlags(EDimmed); |
|
1271 } |
|
1272 |
|
1273 EXPORT_C void CListBoxView::SetDisableRedraw(TBool aDisableRedraw) |
|
1274 { |
|
1275 if (aDisableRedraw) |
|
1276 SetFlags(EDisableRedraw); |
|
1277 else |
|
1278 ClearFlags(EDisableRedraw); |
|
1279 } |
|
1280 |
|
1281 EXPORT_C TBool CListBoxView::RedrawDisabled() const |
|
1282 { |
|
1283 return (iFlags & EDisableRedraw); |
|
1284 } |
|
1285 |
|
1286 EXPORT_C void CListBoxView::SetPaintedSelection( TBool aPaintedSelection ) |
|
1287 { |
|
1288 if ( aPaintedSelection ) |
|
1289 SetFlags( EPaintedSelection ); |
|
1290 else |
|
1291 ClearFlags( EPaintedSelection ); |
|
1292 } |
|
1293 |
|
1294 EXPORT_C TInt CListBoxView::DataWidth() const |
|
1295 { |
|
1296 return iDataWidth; |
|
1297 } |
|
1298 |
|
1299 EXPORT_C TInt CListBoxView::VisibleWidth(const TRect& aRect) const |
|
1300 { |
|
1301 return aRect.Width(); |
|
1302 } |
|
1303 |
|
1304 EXPORT_C void CListBoxView::CalcDataWidth() |
|
1305 { |
|
1306 // The loop below causes HUGE performance problems for no reason |
|
1307 // with long lists. |
|
1308 #if NOT_NEEDED_IN_SERIES60 |
|
1309 // assumes that iModel and iItemDrawer are both valid |
|
1310 // calculate data width (in pixels) |
|
1311 TInt largestItemWidth = 0; |
|
1312 |
|
1313 TInt i = 0; |
|
1314 while (ITEM_EXISTS(i)) |
|
1315 { |
|
1316 largestItemWidth = Max(largestItemWidth, iItemDrawer->ItemWidthInPixels(i)); |
|
1317 ++ i; |
|
1318 } |
|
1319 iDataWidth = largestItemWidth; |
|
1320 iDataWidth += LafListBox::InnerGutter(); |
|
1321 iItemDrawer->SetItemCellSize(ItemSize()); |
|
1322 #endif |
|
1323 } |
|
1324 |
|
1325 EXPORT_C TRgb CListBoxView::BackColor() const |
|
1326 { |
|
1327 return iBackColor; |
|
1328 } |
|
1329 |
|
1330 EXPORT_C void CListBoxView::SetBackColor(TRgb aColor) |
|
1331 { |
|
1332 iBackColor = aColor; |
|
1333 } |
|
1334 |
|
1335 EXPORT_C TRgb CListBoxView::TextColor() const |
|
1336 { |
|
1337 return iTextColor; |
|
1338 } |
|
1339 |
|
1340 EXPORT_C void CListBoxView::SetTextColor(TRgb aColor) |
|
1341 { |
|
1342 iTextColor = aColor; |
|
1343 } |
|
1344 |
|
1345 |
|
1346 EXPORT_C void CListBoxView::DrawEmptyList(const TRect & /*aClientRect*/) const |
|
1347 { |
|
1348 } |
|
1349 |
|
1350 void CListBoxView::DisableVerticalLineDrawing( TBool aDisable ) |
|
1351 { |
|
1352 iDisableVerticalLineDrawing = aDisable; |
|
1353 } |
|
1354 |
|
1355 EXPORT_C void CListBoxView::SetItemOffsetInPixels(TInt aOffset) |
|
1356 { |
|
1357 if ( iExtension && !iExtension->iScrollingDisabled ) |
|
1358 { |
|
1359 iVerticalOffset = aOffset; |
|
1360 } |
|
1361 else |
|
1362 { |
|
1363 // Make sure that offset is 0 when |
|
1364 // panning is disabled |
|
1365 iVerticalOffset = 0; |
|
1366 } |
|
1367 |
|
1368 #ifdef _DEBUG |
|
1369 RDebug::Print( _L( "CListBoxView::SetItemOffsetInPixels, iVerticalOffset = %d" ), iVerticalOffset ); |
|
1370 #endif // _DEBUG |
|
1371 } |
|
1372 |
|
1373 EXPORT_C TInt CListBoxView::ItemOffsetInPixels() const |
|
1374 { |
|
1375 return iVerticalOffset; |
|
1376 } |
|
1377 |
|
1378 void CListBoxView::SetScrolling( TBool aIsScrolling ) |
|
1379 { |
|
1380 if ( iExtension ) |
|
1381 { |
|
1382 iExtension->iScrolling = aIsScrolling; |
|
1383 } |
|
1384 } |
|
1385 |
|
1386 void CListBoxView::SetItemIndex( TInt aItemIndex ) |
|
1387 { |
|
1388 iCurrentItemIndex = aItemIndex; |
|
1389 } |
|
1390 |
|
1391 |
|
1392 // --------------------------------------------------------------------------- |
|
1393 // Returns ETrue if item is partially visible. |
|
1394 // --------------------------------------------------------------------------- |
|
1395 // |
|
1396 EXPORT_C TBool CListBoxView::ItemIsPartiallyVisible( TInt aItemIndex ) const |
|
1397 { |
|
1398 _AKNTRACE_FUNC_ENTER; |
|
1399 TPoint itemPosition( ItemPos( aItemIndex ) ); |
|
1400 TBool itemPartiallyVisible = |
|
1401 ( itemPosition.iY < iViewRect.iTl.iY && |
|
1402 itemPosition.iY + iItemHeight >= iViewRect.iTl.iY ) || |
|
1403 ( itemPosition.iY <= iViewRect.iBr.iY && |
|
1404 itemPosition.iY + iItemHeight > iViewRect.iBr.iY ); |
|
1405 _AKNTRACE( "itemPartiallyVisible is %d", itemPartiallyVisible ); |
|
1406 _AKNTRACE_FUNC_EXIT; |
|
1407 return itemPartiallyVisible; |
|
1408 } |
|
1409 |
|
1410 |
|
1411 |
|
1412 // class CSnakingListBoxView |
|
1413 |
|
1414 EXPORT_C CSnakingListBoxView::CSnakingListBoxView() |
|
1415 { |
|
1416 iColumnWidth = 100; |
|
1417 } |
|
1418 |
|
1419 EXPORT_C CSnakingListBoxView::~CSnakingListBoxView() |
|
1420 { |
|
1421 } |
|
1422 |
|
1423 EXPORT_C void CSnakingListBoxView::CalcBottomItemIndex() |
|
1424 { |
|
1425 _AKNTRACE_FUNC_ENTER; |
|
1426 TInt i = iTopItemIndex; |
|
1427 iBottomItemIndex = i; |
|
1428 if ((iColumnWidth == 0) || (iItemHeight == 0)) |
|
1429 { |
|
1430 _AKNTRACE_FUNC_EXIT; |
|
1431 return; |
|
1432 } |
|
1433 TInt xpos = iViewRect.iTl.iX; |
|
1434 TInt ypos = iViewRect.iTl.iY; |
|
1435 TInt maxXPos = xpos + (iViewRect.Width() / iColumnWidth) * iColumnWidth; |
|
1436 TInt maxYPos = ypos + ((iViewRect.Height() / iItemHeight) * iItemHeight)- iItemHeight; |
|
1437 ITEM_EXISTS_BEGIN; |
|
1438 while ((xpos < maxXPos) && (ITEM_EXISTS(i+1))) |
|
1439 { |
|
1440 ++ i; |
|
1441 if (ypos == maxYPos) |
|
1442 { |
|
1443 ypos = iViewRect.iTl.iY; |
|
1444 xpos += iColumnWidth; |
|
1445 } |
|
1446 else |
|
1447 ypos += iItemHeight; |
|
1448 } |
|
1449 if ((i > 0) && (xpos >= maxXPos)) |
|
1450 --i; |
|
1451 iBottomItemIndex = i; |
|
1452 _AKNTRACE_FUNC_EXIT; |
|
1453 } |
|
1454 |
|
1455 EXPORT_C void CSnakingListBoxView::CalcRowAndColIndexesFromItemIndex(TInt aItemIndex, TInt& aRowIndex, TInt& aColIndex) const |
|
1456 { |
|
1457 // should panic if iItemHeight or iViewRect.Height() is 0 |
|
1458 // assumes specified item is currently visible |
|
1459 _AKNTRACE_FUNC_ENTER; |
|
1460 TInt numOfItemsFromFirstVisibleItem = (aItemIndex - iTopItemIndex); |
|
1461 TInt numOfItemsPerColumn = NumberOfItemsPerColumn(); |
|
1462 aColIndex = numOfItemsFromFirstVisibleItem / numOfItemsPerColumn; |
|
1463 aRowIndex = numOfItemsFromFirstVisibleItem % numOfItemsPerColumn; |
|
1464 _AKNTRACE_FUNC_EXIT; |
|
1465 } |
|
1466 |
|
1467 EXPORT_C TInt CSnakingListBoxView::NumberOfItemsPerColumn() const |
|
1468 { |
|
1469 TInt numOfItemsPerColumn = iViewRect.Height() / iItemHeight; |
|
1470 return (numOfItemsPerColumn<1? 1: numOfItemsPerColumn); |
|
1471 } |
|
1472 |
|
1473 EXPORT_C void CSnakingListBoxView::CalcItemIndexFromRowAndColIndexes(TInt& aItemIndex, TInt aRowIndex, TInt aColIndex) const |
|
1474 { |
|
1475 _AKNTRACE_FUNC_ENTER; |
|
1476 __ASSERT_DEBUG((aRowIndex >= 0), Panic(EEikPanicListBoxInvalidRowIndexSpecified)); |
|
1477 __ASSERT_DEBUG((aColIndex >= 0), Panic(EEikPanicListBoxInvalidColIndexSpecified)); |
|
1478 // should panic if iItemHeight is 0 |
|
1479 TInt numOfItemsPerColumn = NumberOfItemsPerColumn(); |
|
1480 aItemIndex = iTopItemIndex + ((aColIndex * numOfItemsPerColumn) + aRowIndex); |
|
1481 _AKNTRACE_FUNC_EXIT; |
|
1482 } |
|
1483 |
|
1484 EXPORT_C TPoint CSnakingListBoxView::ItemPos(TInt aItemIndex) const |
|
1485 { |
|
1486 TInt rowIndex, colIndex; |
|
1487 CalcRowAndColIndexesFromItemIndex(aItemIndex, rowIndex, colIndex); |
|
1488 return TPoint(iViewRect.iTl.iX + colIndex * iColumnWidth, iViewRect.iTl.iY + rowIndex * iItemHeight); |
|
1489 } |
|
1490 |
|
1491 EXPORT_C TBool CSnakingListBoxView::XYPosToItemIndex(TPoint aPosition, TInt& aItemIndex) const |
|
1492 { |
|
1493 // returns ETrue and sets aItemIndex to the index of the item whose bounding box contains aPosition |
|
1494 // returns EFalse if no such item exists |
|
1495 _AKNTRACE_FUNC_ENTER; |
|
1496 TBool itemFound = EFalse; |
|
1497 if ((iColumnWidth == 0) || (iItemHeight == 0)) |
|
1498 { |
|
1499 _AKNTRACE_FUNC_EXIT; |
|
1500 return EFalse; |
|
1501 } |
|
1502 if (iViewRect.Contains(aPosition)) |
|
1503 { |
|
1504 // aPosition is inside the display area |
|
1505 TInt yOffsetFromViewRectOrigin = aPosition.iY - iViewRect.iTl.iY; |
|
1506 TInt xOffsetFromViewRectOrigin = aPosition.iX - iViewRect.iTl.iX; |
|
1507 TInt colIndex = xOffsetFromViewRectOrigin / iColumnWidth; |
|
1508 TInt rowIndex = yOffsetFromViewRectOrigin / iItemHeight; |
|
1509 // now work out the item index given that we know which row and column it is in |
|
1510 TInt itemIndex; |
|
1511 CalcItemIndexFromRowAndColIndexes(itemIndex, rowIndex, colIndex); |
|
1512 if ((ITEM_EXISTS_ONCE(itemIndex)) && (ItemIsVisible(itemIndex))) |
|
1513 { |
|
1514 aItemIndex = itemIndex; |
|
1515 itemFound = ETrue; |
|
1516 } |
|
1517 } |
|
1518 _AKNTRACE_FUNC_EXIT; |
|
1519 return itemFound; |
|
1520 } |
|
1521 |
|
1522 EXPORT_C void CSnakingListBoxView::MoveCursorL(TCursorMovement aCursorMovement, TSelectionMode aSelectionMode) |
|
1523 { |
|
1524 if (aCursorMovement == ECursorNextColumn) |
|
1525 MoveToNextColumnL(aSelectionMode); |
|
1526 else if (aCursorMovement == ECursorPreviousColumn) |
|
1527 MoveToPreviousColumnL(aSelectionMode); |
|
1528 else |
|
1529 CListBoxView::MoveCursorL(aCursorMovement, aSelectionMode); |
|
1530 } |
|
1531 |
|
1532 EXPORT_C TSize CSnakingListBoxView::ItemSize(TInt /*aItemIndex*/) const |
|
1533 { |
|
1534 return TSize(iColumnWidth, iItemHeight); |
|
1535 } |
|
1536 |
|
1537 EXPORT_C void CSnakingListBoxView::SetColumnWidth(TInt aColumnWidth) |
|
1538 { |
|
1539 TBool validColumnWidth = (aColumnWidth > 0); |
|
1540 __ASSERT_ALWAYS(validColumnWidth, Panic(EEikPanicListBoxInvalidColumnWidthSpecified)); |
|
1541 iColumnWidth = aColumnWidth; |
|
1542 CalcBottomItemIndex(); |
|
1543 iItemDrawer->SetItemCellSize(ItemSize()); |
|
1544 } |
|
1545 |
|
1546 EXPORT_C TInt CSnakingListBoxView::NumberOfItemsThatFitInRect(const TRect& aRect) const |
|
1547 { |
|
1548 _AKNTRACE_FUNC_ENTER; |
|
1549 if ((iItemHeight == 0) || (iColumnWidth == 0)) |
|
1550 { |
|
1551 _AKNTRACE_FUNC_EXIT; |
|
1552 return 0; |
|
1553 } |
|
1554 TInt numOfRows = aRect.Height() / iItemHeight; |
|
1555 TInt numOfCols = aRect.Width() / iColumnWidth; |
|
1556 _AKNTRACE_FUNC_EXIT; |
|
1557 return (numOfRows * numOfCols); |
|
1558 } |
|
1559 |
|
1560 EXPORT_C void CSnakingListBoxView::ClearUnusedItemSpace(TInt aStartItemIndex, TInt aEndItemIndex) const |
|
1561 { |
|
1562 TRect blankRect; |
|
1563 for (TInt i = aStartItemIndex; i <= aEndItemIndex; i++) |
|
1564 { |
|
1565 blankRect.SetRect(ItemPos(i), ItemSize()); |
|
1566 iItemDrawer->ClearRect(blankRect); |
|
1567 } |
|
1568 } |
|
1569 |
|
1570 EXPORT_C void CSnakingListBoxView::MoveToPreviousColumnL(TSelectionMode aSelectionMode) |
|
1571 { |
|
1572 _AKNTRACE_FUNC_ENTER; |
|
1573 TInt oldCurrentItemIndex = iCurrentItemIndex; |
|
1574 TInt indexOfNewCurrentItem = iCurrentItemIndex; |
|
1575 // TInt indexOfNewTopItem = iTopItemIndex; |
|
1576 TInt numOfItemsPerColumn = NumberOfItemsPerColumn(); |
|
1577 indexOfNewCurrentItem = iCurrentItemIndex - numOfItemsPerColumn; |
|
1578 if (indexOfNewCurrentItem < 0) |
|
1579 { |
|
1580 _AKNTRACE_FUNC_EXIT; |
|
1581 return; |
|
1582 } |
|
1583 if (ITEM_EXISTS_ONCE(indexOfNewCurrentItem)) |
|
1584 { |
|
1585 iCurrentItemIndex = indexOfNewCurrentItem; |
|
1586 if (!(ItemIsSelected(oldCurrentItemIndex)) || (aSelectionMode != ESingleSelection)) |
|
1587 DrawItem(oldCurrentItemIndex); |
|
1588 if (iCurrentItemIndex < iTopItemIndex) |
|
1589 { |
|
1590 UpdateSelectionL(aSelectionMode); |
|
1591 ScrollToMakeItemVisible(iCurrentItemIndex); |
|
1592 } |
|
1593 else |
|
1594 { |
|
1595 ScrollToMakeItemVisible(iCurrentItemIndex); |
|
1596 UpdateSelectionL(aSelectionMode); |
|
1597 } |
|
1598 } |
|
1599 _AKNTRACE_FUNC_EXIT; |
|
1600 } |
|
1601 |
|
1602 EXPORT_C void CSnakingListBoxView::MoveToNextColumnL(TSelectionMode aSelectionMode) |
|
1603 { |
|
1604 _AKNTRACE_FUNC_ENTER; |
|
1605 TInt oldCurrentItemIndex = iCurrentItemIndex; |
|
1606 TInt indexOfNewCurrentItem = iCurrentItemIndex; |
|
1607 TInt numOfItemsPerColumn = NumberOfItemsPerColumn(); |
|
1608 indexOfNewCurrentItem = iCurrentItemIndex + numOfItemsPerColumn; |
|
1609 ITEM_EXISTS_BEGIN; |
|
1610 if (ITEM_EXISTS(indexOfNewCurrentItem) == EFalse) |
|
1611 { |
|
1612 TInt indexOfItemAtTopOfTargetCol = (indexOfNewCurrentItem / numOfItemsPerColumn) * numOfItemsPerColumn; |
|
1613 if (! (ITEM_EXISTS(indexOfItemAtTopOfTargetCol))) |
|
1614 { |
|
1615 _AKNTRACE_FUNC_EXIT; |
|
1616 return; // no more columns of data to the right, so just return |
|
1617 } |
|
1618 // there are more columns of data available to the right of the current column |
|
1619 // since there is no item at the expected position, look for an item further up in the same column |
|
1620 TInt i = indexOfNewCurrentItem; |
|
1621 while (ITEM_EXISTS(i) == EFalse) |
|
1622 --i; |
|
1623 indexOfNewCurrentItem = i; |
|
1624 } |
|
1625 iCurrentItemIndex = indexOfNewCurrentItem; |
|
1626 if (!(ItemIsSelected(oldCurrentItemIndex)) || (aSelectionMode != ESingleSelection)) |
|
1627 DrawItem(oldCurrentItemIndex); |
|
1628 if (iCurrentItemIndex > iBottomItemIndex) |
|
1629 { |
|
1630 UpdateSelectionL(aSelectionMode); |
|
1631 ScrollToMakeItemVisible(iCurrentItemIndex); |
|
1632 } |
|
1633 else |
|
1634 { |
|
1635 ScrollToMakeItemVisible(iCurrentItemIndex); |
|
1636 UpdateSelectionL(aSelectionMode); |
|
1637 } |
|
1638 _AKNTRACE_FUNC_EXIT; |
|
1639 } |
|
1640 |
|
1641 EXPORT_C TInt CSnakingListBoxView::CalcNewTopItemIndexSoItemIsVisible(TInt aItemIndex) const |
|
1642 { |
|
1643 _AKNTRACE_FUNC_ENTER; |
|
1644 if (aItemIndex == iTopItemIndex) |
|
1645 { |
|
1646 _AKNTRACE_FUNC_EXIT; |
|
1647 return iTopItemIndex; |
|
1648 } |
|
1649 TInt newTopItemIndex = iTopItemIndex; |
|
1650 TInt numOfItemsPerColumn = NumberOfItemsPerColumn(); |
|
1651 TInt colIndexOfTargetItem = aItemIndex / numOfItemsPerColumn; |
|
1652 TInt numOfColsThatFitInViewRect = VisibleWidth(iViewRect); |
|
1653 if (aItemIndex < iTopItemIndex) |
|
1654 newTopItemIndex = colIndexOfTargetItem * numOfItemsPerColumn; |
|
1655 else if (aItemIndex > iBottomItemIndex) |
|
1656 { |
|
1657 TInt colIndexOfNewBottomItem = colIndexOfTargetItem; |
|
1658 TInt colIndexOfNewTopItem = colIndexOfNewBottomItem - (numOfColsThatFitInViewRect - 1); |
|
1659 newTopItemIndex = colIndexOfNewTopItem * numOfItemsPerColumn; |
|
1660 } |
|
1661 _AKNTRACE_FUNC_EXIT; |
|
1662 return newTopItemIndex; |
|
1663 } |
|
1664 |
|
1665 EXPORT_C void CSnakingListBoxView::HScroll(TInt aHScrollAmount) |
|
1666 { |
|
1667 // note: aHScrollAmount is assumed to be specified in terms of number of columns; |
|
1668 // a negative value ==> we need to scroll view contents to the right |
|
1669 _AKNTRACE_FUNC_ENTER; |
|
1670 if ((aHScrollAmount == 0) || (iItemHeight == 0)) |
|
1671 { |
|
1672 _AKNTRACE_FUNC_EXIT; |
|
1673 return; |
|
1674 } |
|
1675 if (RedrawDisabled()) |
|
1676 { |
|
1677 _AKNTRACE_FUNC_EXIT; |
|
1678 return; |
|
1679 } |
|
1680 iHScrollOffset += aHScrollAmount; |
|
1681 TInt numOfColsThatFitInViewRect = VisibleWidth(iViewRect); |
|
1682 TInt numOfItemsPerColumn = NumberOfItemsPerColumn(); |
|
1683 if (Abs(aHScrollAmount) >= numOfColsThatFitInViewRect) |
|
1684 { |
|
1685 iTopItemIndex = iTopItemIndex + (numOfItemsPerColumn * aHScrollAmount); |
|
1686 CalcBottomItemIndex(); |
|
1687 Draw(); |
|
1688 } |
|
1689 else |
|
1690 { |
|
1691 TInt oldTopItemIndex = iTopItemIndex; |
|
1692 TInt usedViewRectPortionWidth = VisibleWidth(iViewRect) * iColumnWidth; |
|
1693 TInt usedViewRectPortionHeight = (iViewRect.Height() / iItemHeight) * iItemHeight; |
|
1694 TRect usedPortionOfViewRect(iViewRect.iTl, TSize(usedViewRectPortionWidth, usedViewRectPortionHeight)); |
|
1695 iWin->Scroll(usedPortionOfViewRect, TPoint(-aHScrollAmount * iColumnWidth, 0)); |
|
1696 // iWin->Scroll(iViewRect, TPoint(-aHScrollAmount * iColumnWidth, 0)); |
|
1697 iTopItemIndex = iTopItemIndex + (numOfItemsPerColumn * aHScrollAmount); |
|
1698 CalcBottomItemIndex(); |
|
1699 TInt colIndexOfOldTopItem = oldTopItemIndex / numOfItemsPerColumn; |
|
1700 TRect redrawRect; |
|
1701 TInt startColIndex; |
|
1702 TInt endColIndex; |
|
1703 if (aHScrollAmount > 0) |
|
1704 { |
|
1705 redrawRect.SetRect(TPoint((numOfColsThatFitInViewRect - aHScrollAmount) * iColumnWidth + iViewRect.iTl.iX, iViewRect.iTl.iY), iViewRect.iBr); |
|
1706 startColIndex = colIndexOfOldTopItem + numOfColsThatFitInViewRect; |
|
1707 endColIndex = startColIndex + aHScrollAmount - 1; |
|
1708 } |
|
1709 else |
|
1710 { |
|
1711 redrawRect.SetRect(iViewRect.iTl, TPoint(Abs(aHScrollAmount) * iColumnWidth + iViewRect.iTl.iX, iViewRect.iBr.iY)); |
|
1712 startColIndex = colIndexOfOldTopItem + aHScrollAmount; |
|
1713 endColIndex = colIndexOfOldTopItem - 1; |
|
1714 } |
|
1715 redrawRect.Intersection(iViewRect); |
|
1716 iWin->Invalidate(iViewRect); |
|
1717 iWin->BeginRedraw(iViewRect); |
|
1718 DrawColumnRange(startColIndex, endColIndex); |
|
1719 iWin->EndRedraw(); |
|
1720 } |
|
1721 _AKNTRACE_FUNC_EXIT; |
|
1722 } |
|
1723 |
|
1724 EXPORT_C void CSnakingListBoxView::CalcDataWidth() |
|
1725 { |
|
1726 // assumes that iModel and iItemDrawer are both valid |
|
1727 // assumes that the model knows how many items there are... |
|
1728 // calculate data width (in columns) |
|
1729 iDataWidth = 0; |
|
1730 if ((iViewRect.Height() == 0) || (iItemHeight == 0)) |
|
1731 return; |
|
1732 TInt numOfItemsPerColumn = NumberOfItemsPerColumn(); |
|
1733 iDataWidth = iModel->NumberOfItems() / numOfItemsPerColumn; |
|
1734 if (iModel->NumberOfItems() % numOfItemsPerColumn) |
|
1735 iDataWidth++; // add on one column if remainder != 0 |
|
1736 } |
|
1737 |
|
1738 EXPORT_C TInt CSnakingListBoxView::VisibleWidth(const TRect& aRect) const |
|
1739 { |
|
1740 return aRect.Width() / iColumnWidth; |
|
1741 } |
|
1742 |
|
1743 EXPORT_C void CSnakingListBoxView::Draw(const TRect* aClipRect) const |
|
1744 { |
|
1745 // temporary: some code sharing with CListBoxView::Draw() is needed! |
|
1746 _AKNTRACE_FUNC_ENTER; |
|
1747 if (RedrawDisabled()) |
|
1748 { |
|
1749 _AKNTRACE_FUNC_EXIT; |
|
1750 return; |
|
1751 } |
|
1752 __ASSERT_DEBUG(iModel, Panic(EEikPanicListBoxNoModel)); |
|
1753 if (iItemHeight == 0) |
|
1754 { |
|
1755 _AKNTRACE_FUNC_EXIT; |
|
1756 return; |
|
1757 } |
|
1758 if (! aClipRect) |
|
1759 aClipRect = &iViewRect; |
|
1760 iItemDrawer->ClearRect(iViewRect); |
|
1761 if (iModel->NumberOfItems() == 0) |
|
1762 { |
|
1763 // call to this was moved to CEikListBox::Draw(), because we need the whole clientrect |
|
1764 // to do the drawing correctly. |
|
1765 //DrawEmptyList(); |
|
1766 } |
|
1767 else |
|
1768 { |
|
1769 TInt firstPotentialItemIndex = iTopItemIndex; |
|
1770 TInt lastPotentialItemIndex = iTopItemIndex + NumberOfItemsThatFitInRect(iViewRect) - 1; |
|
1771 TInt i; |
|
1772 ITEM_EXISTS_BEGIN; |
|
1773 for (i = firstPotentialItemIndex; i <= lastPotentialItemIndex; i++) |
|
1774 if (ITEM_EXISTS(i)) |
|
1775 DrawItem(i); |
|
1776 else |
|
1777 { |
|
1778 ClearUnusedItemSpace(i, lastPotentialItemIndex); |
|
1779 break; |
|
1780 } |
|
1781 // clear the unused portion of the viewing area |
|
1782 TInt usedViewRectPortionWidth = VisibleWidth(iViewRect) * iColumnWidth; |
|
1783 TInt usedViewRectPortionHeight = (iViewRect.Height() / iItemHeight) * iItemHeight; |
|
1784 TRect usedPortionOfViewRect(iViewRect.iTl, TSize(usedViewRectPortionWidth, usedViewRectPortionHeight)); |
|
1785 iItemDrawer->Gc()->SetBrushColor( BackColor() ); |
|
1786 DrawUtils::ClearBetweenRects( *iItemDrawer->Gc(), iViewRect, usedPortionOfViewRect ); |
|
1787 // ((CSnakingListBoxView*)this)->iBottomItemIndex = i - 1; |
|
1788 } |
|
1789 _AKNTRACE_FUNC_EXIT; |
|
1790 } |
|
1791 |
|
1792 EXPORT_C void CSnakingListBoxView::DrawItemRange(TInt aStartItemIndex, TInt aEndItemIndex) const |
|
1793 { |
|
1794 // temporary: some code sharing with CSnakingListBoxView::Draw() is needed! |
|
1795 _AKNTRACE_FUNC_ENTER; |
|
1796 if (RedrawDisabled()) |
|
1797 { |
|
1798 _AKNTRACE_FUNC_EXIT; |
|
1799 return; |
|
1800 } |
|
1801 if (iItemHeight == 0) |
|
1802 { |
|
1803 _AKNTRACE_FUNC_EXIT; |
|
1804 return; |
|
1805 } |
|
1806 TInt i; |
|
1807 ITEM_EXISTS_BEGIN; |
|
1808 for (i = aStartItemIndex; i <= aEndItemIndex; i++) |
|
1809 if (ITEM_EXISTS(i)) |
|
1810 DrawItem(i); |
|
1811 else |
|
1812 { |
|
1813 ClearUnusedItemSpace(i, aEndItemIndex); |
|
1814 break; |
|
1815 } |
|
1816 TInt usedViewRectPortionWidth = VisibleWidth(iViewRect) * iColumnWidth; |
|
1817 TInt usedViewRectPortionHeight = (iViewRect.Height() / iItemHeight) * iItemHeight; |
|
1818 TRect usedPortionOfViewRect(iViewRect.iTl, TSize(usedViewRectPortionWidth, usedViewRectPortionHeight)); |
|
1819 iItemDrawer->Gc()->SetBrushColor( BackColor() ); |
|
1820 DrawUtils::ClearBetweenRects( *iItemDrawer->Gc(), iViewRect, usedPortionOfViewRect); |
|
1821 _AKNTRACE_FUNC_EXIT; |
|
1822 } |
|
1823 |
|
1824 EXPORT_C void CSnakingListBoxView::DrawColumnRange(TInt aStartColIndex, TInt aEndColIndex) const |
|
1825 { |
|
1826 _AKNTRACE_FUNC_ENTER; |
|
1827 if (RedrawDisabled()) |
|
1828 { |
|
1829 _AKNTRACE_FUNC_EXIT; |
|
1830 return; |
|
1831 } |
|
1832 if (iItemHeight == 0) |
|
1833 { |
|
1834 _AKNTRACE_FUNC_EXIT; |
|
1835 return; |
|
1836 } |
|
1837 TInt numOfItemsPerColumn = NumberOfItemsPerColumn(); |
|
1838 TInt startItemIndex = aStartColIndex * numOfItemsPerColumn; |
|
1839 TInt endItemIndex = aEndColIndex * numOfItemsPerColumn + numOfItemsPerColumn - 1; |
|
1840 DrawItemRange(startItemIndex, endItemIndex); |
|
1841 } |
|
1842 |
|
1843 EXPORT_C void CSnakingListBoxView::SetTopItemIndex(TInt aNewTopItemIndex) |
|
1844 { |
|
1845 if (iViewRect.Height() == 0) |
|
1846 return; |
|
1847 CListBoxView::SetTopItemIndex(aNewTopItemIndex); |
|
1848 UpdateHScrollOffsetBasedOnTopItemIndex(); |
|
1849 } |
|
1850 |
|
1851 EXPORT_C void CSnakingListBoxView::SetItemHeight(TInt aItemHeight) |
|
1852 { |
|
1853 CListBoxView::SetItemHeight(aItemHeight); |
|
1854 CalcBottomItemIndex(); |
|
1855 UpdateHScrollOffsetBasedOnTopItemIndex(); |
|
1856 } |
|
1857 |
|
1858 EXPORT_C void CSnakingListBoxView::UpdateHScrollOffsetBasedOnTopItemIndex() |
|
1859 { |
|
1860 TInt numOfItemsPerColumn = NumberOfItemsPerColumn(); |
|
1861 iHScrollOffset = iTopItemIndex / numOfItemsPerColumn; |
|
1862 } |
|
1863 |
|
1864 EXPORT_C TBool CSnakingListBoxView::ScrollToMakeItemVisible(TInt aItemIndex) |
|
1865 { |
|
1866 _AKNTRACE_FUNC_ENTER; |
|
1867 if ((RedrawDisabled()) || (ItemIsVisible(aItemIndex)) || (iViewRect.Height() == 0)) |
|
1868 { |
|
1869 _AKNTRACE_FUNC_EXIT; |
|
1870 return EFalse; |
|
1871 } |
|
1872 HideMatcherCursor(); |
|
1873 TInt amountToScroll = CalculateHScrollOffsetSoItemIsVisible(aItemIndex); |
|
1874 HScroll(amountToScroll); |
|
1875 DrawMatcherCursor(); |
|
1876 _AKNTRACE_FUNC_EXIT; |
|
1877 return ETrue; |
|
1878 } |
|
1879 |
|
1880 EXPORT_C TInt CSnakingListBoxView::CalculateHScrollOffsetSoItemIsVisible(TInt aItemIndex) |
|
1881 { |
|
1882 // returns the number of cols that we need to scroll, 0 if no scrolling is needed |
|
1883 _AKNTRACE_FUNC_ENTER; |
|
1884 TInt newTopItemIndex = CalcNewTopItemIndexSoItemIsVisible(aItemIndex); |
|
1885 TInt numOfItemsPerColumn = NumberOfItemsPerColumn(); |
|
1886 TInt oldHScrollOffset = iHScrollOffset; |
|
1887 TInt newHScrollOffset = newTopItemIndex / numOfItemsPerColumn; |
|
1888 TInt numOfColsToScroll = newHScrollOffset - oldHScrollOffset; |
|
1889 _AKNTRACE_FUNC_EXIT; |
|
1890 return numOfColsToScroll; |
|
1891 } |
|
1892 |
|
1893 EXPORT_C TAny* CSnakingListBoxView::Reserved_1() |
|
1894 { |
|
1895 return NULL; |
|
1896 } |
|
1897 |
|
1898 |
|
1899 |