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1 /* |
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2 * Copyright (c) 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 FILES |
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20 #include <ganes/HgList.h> |
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21 #include <ganes/HgItem.h> |
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22 |
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23 #include "HgLayoutData.h" |
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24 #include "HgDrawUtils.h" |
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25 #include "HgScrollbar.h" |
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26 |
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27 #include <aknphysics.h> |
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28 |
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29 #include "HgConstants.h" |
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30 #include "HgMarquee.h" |
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31 |
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32 #include <AknIconUtils.h> |
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33 #include <avkon.mbg> |
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34 #include <AknUtils.h> //AknLayoutUtils |
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35 #include <gdi.h> // CFont |
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36 #include <AknsUtils.h> |
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37 #include <AknsDrawUtils.h> |
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38 #include <AknsConstants.h> |
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39 #include <AknsFrameBackgroundControlContext.h> |
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40 #include <gulicon.h> |
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41 |
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42 #include <layoutmetadata.cdl.h> |
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43 #include <aknlayoutscalable_avkon.cdl.h> |
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44 |
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45 // UI Constants |
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46 |
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47 // ============================ MEMBER FUNCTIONS =============================== |
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48 |
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49 // ----------------------------------------------------------------------------- |
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50 // CHgList::ConstructL() |
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51 // Symbian 2nd phase constructor can leave. |
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52 // ----------------------------------------------------------------------------- |
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53 // |
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54 void CHgList::ConstructL (const TRect& aRect, RWsSession* aSession ) |
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55 { |
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56 // Inherited classes might use some custom layout data, so lets use the |
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57 // default one only if not yet initialized. |
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58 if( !iLayoutData ) |
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59 iLayoutData = CHgListLayoutData::NewL(); |
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60 |
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61 CHgScroller::ConstructL( aRect, aSession ); |
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62 |
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63 // Activate the window, which makes it ready to be drawn |
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64 ActivateL ( ); |
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65 } |
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66 |
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67 // ----------------------------------------------------------------------------- |
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68 // CHgList::CHgList() |
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69 // C++ default constructor can NOT contain any code, that might leave. |
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70 // ----------------------------------------------------------------------------- |
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71 // |
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72 CHgList::CHgList( TInt aItemCount, |
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73 CGulIcon* aDefaultIcon ) |
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74 : CHgScroller( aItemCount, aDefaultIcon ), |
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75 iColor( KRgbBlack ), |
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76 iColorBack( AKN_LAF_COLOR( 0 ) ), |
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77 iHighlightedColor( KRgbBlack ), |
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78 iHighlightedColorBack( AKN_LAF_COLOR( 0 ) ) |
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79 { |
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80 SetFlags(EHgScrollerSearchWithQWERTY); // Set QWERTY search on |
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81 } |
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82 |
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83 // ----------------------------------------------------------------------------- |
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84 // CHgList::~CHgList() |
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85 // Destructor. |
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86 // ----------------------------------------------------------------------------- |
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87 // |
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88 EXPORT_C CHgList::~CHgList ( ) |
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89 { |
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90 delete iLayoutData; |
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91 } |
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92 |
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93 // ----------------------------------------------------------------------------- |
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94 // CHgList::InitItemsL() |
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95 // ----------------------------------------------------------------------------- |
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96 // |
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97 void CHgList::InitItemsL() |
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98 { |
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99 for(TInt i = 0; i < iItemCount; ++i) |
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100 { |
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101 iItems.Append(CHgItem::NewL()); |
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102 } |
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103 } |
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104 |
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105 // ----------------------------------------------------------------------------- |
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106 // CHgList::DrawHighlight() |
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107 // Called by Draw function to draw the higlighted item effect. |
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108 // ----------------------------------------------------------------------------- |
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109 // |
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110 void CHgList::DrawHighlight( const TRect& aRect, TRgb& aTextColor ) const |
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111 { |
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112 // Init drawing options |
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113 TRect outerRect( aRect ); |
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114 TRect innerRect( aRect ); |
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115 innerRect.Shrink(KListHighlightInnerRectShrink,KListHighlightInnerRectShrink); |
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116 |
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117 CWindowGc& gc = SystemGc(); |
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118 |
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119 // Draw "selected item" rect for the row. Bitmaps to draw the rect are feched from |
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120 // current skin instance. |
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121 if( HasHighlight() ) |
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122 { |
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123 if( iPointerDown && !iPanning && iFocusedIndex != KErrNotFound && iSelectionToFocusedItem ) |
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124 { |
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125 AknsDrawUtils::DrawFrame( AknsUtils::SkinInstance(), |
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126 gc, |
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127 outerRect, |
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128 innerRect, |
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129 KAknsIIDQsnFrListPressed, |
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130 KAknsIIDQsnFrListCenterPressed ); |
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131 } |
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132 else |
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133 { |
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134 AknsDrawUtils::DrawFrame( AknsUtils::SkinInstance(), |
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135 gc, |
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136 outerRect, |
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137 innerRect, |
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138 KAknsIIDQsnFrList, |
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139 KAknsIIDQsnFrListCenter ); |
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140 } |
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141 aTextColor = iHighlightedColor; |
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142 } |
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143 else if( iPointerDown && !iPanning ) |
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144 { |
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145 AknsDrawUtils::DrawFrame( AknsUtils::SkinInstance(), |
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146 gc, |
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147 outerRect, |
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148 innerRect, |
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149 KAknsIIDQsnFrList, |
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150 KAknsIIDQsnFrListCenter ); |
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151 } |
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152 } |
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153 |
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154 // ----------------------------------------------------------------------------- |
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155 // CHgList::HandleSizeChanged() |
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156 // Called by framework when the view size is changed. |
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157 // ----------------------------------------------------------------------------- |
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158 // |
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159 void CHgList::HandleSizeChanged ( ) |
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160 { |
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161 iLandscapeScrolling = EFalse; // list always scrolls in portrait mode |
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162 iRows = iItemCount; |
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163 |
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164 // Resolve colors for normal and higlighted items |
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165 if ( AknsUtils::AvkonSkinEnabled() ) |
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166 { |
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167 // this does not modify color unless it gets a correct one |
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168 // no real need to check errors |
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169 AknsUtils::GetCachedColor( |
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170 AknsUtils::SkinInstance(), |
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171 iColor, |
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172 KAknsIIDQsnTextColors, |
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173 EAknsCIQsnTextColorsCG6 ); |
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174 |
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175 AknsUtils::GetCachedColor( |
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176 AknsUtils::SkinInstance(), |
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177 iHighlightedColor, |
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178 KAknsIIDQsnTextColors, |
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179 EAknsCIQsnTextColorsCG10 ); |
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180 } |
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181 iLayoutData->SetBaseLayout(AknLayoutScalable_Avkon::list_gen_pane(0)); |
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182 |
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183 if( iFlags & CHgScroller::EHgScrollerFlatStatusPane ) |
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184 { |
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185 iListOffset = TPoint(0,0); |
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186 } |
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187 else |
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188 { |
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189 TAknLayoutRect foobar; |
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190 foobar.LayoutRect(Rect(), AknLayoutScalable_Avkon::listscroll_gen_pane(0)); |
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191 |
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192 iWidth = foobar.Rect().Width(); |
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193 iHeight = foobar.Rect().Height(); |
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194 iListOffset = foobar.Rect().iTl; |
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195 } |
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196 } |
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197 |
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198 // ----------------------------------------------------------------------------- |
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199 // CHgList::DoDraw() |
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200 // ----------------------------------------------------------------------------- |
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201 // |
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202 void CHgList::DoDraw(const TRect& /*aRect*/ ) const |
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203 { |
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204 // Calculate the displacement. How much of the first row is showing. |
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205 TInt ydiff = (iViewPosition.iY-(iHeight/2))%(iRowHeight); |
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206 |
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207 CWindowGc& gc = SystemGc(); |
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208 |
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209 if( iItemCount == 0 ) |
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210 { |
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211 if( iEmptyText ) |
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212 iDrawUtils->DrawEmptyText(gc, Rect(), *iEmptyText, iColor); |
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213 } |
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214 else |
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215 { |
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216 // Get the row rect |
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217 TAknLayoutRect layout; |
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218 layout.LayoutRect(ListRect(), iLayoutData->ItemLayout()); |
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219 |
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220 ResetClippingRect(gc); |
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221 |
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222 // Draw rows |
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223 for(TInt i = iCurrentRow; i < iRows && i < iItems.Count(); ++i) |
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224 { |
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225 // Topleft position of the row. |
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226 TPoint point( |
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227 0, |
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228 ((i-iCurrentRow)*iRowHeight) - ydiff); |
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229 |
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230 if( i < 0 || point.iY < iListOffset.iY - layout.Rect().Height() ) |
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231 continue; // Not a real row |
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232 else if( point.iY + iListOffset.iY > iHeight ) |
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233 break; // Row is now showing on the screen, we can stop. |
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234 |
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235 |
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236 TRect rect(layout.Rect()); |
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237 // Move to correct y-position |
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238 rect.Move(point); |
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239 DrawItem( i, rect ); |
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240 |
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241 if( i!= iItems.Count() - 1) |
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242 AknListUtils::DrawSeparator( gc, rect, iColor ); |
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243 } |
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244 gc.CancelClippingRect(); |
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245 } |
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246 } |
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247 |
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248 |
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249 void CHgList::ResetClippingRect( CWindowGc& aGc ) const |
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250 { |
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251 if( !(iFlags & CHgScroller::EHgScrollerFlatStatusPane) ) |
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252 aGc.SetClippingRect( TRect(iListOffset, TSize(iWidth, iHeight+2)) ); |
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253 } |
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254 |
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255 // ----------------------------------------------------------------------------- |
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256 // CHgList::TotalSize() |
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257 // ----------------------------------------------------------------------------- |
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258 // |
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259 TSize CHgList::TotalSize() const |
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260 { |
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261 return TSize( iWidth, iRows*iRowHeight ); |
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262 } |
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263 |
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264 // ----------------------------------------------------------------------------- |
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265 // CHgList::GetSelected() |
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266 // ----------------------------------------------------------------------------- |
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267 // |
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268 TInt CHgList::GetSelected( TPoint aPosition ) const |
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269 { |
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270 // Real position is current screen pos + world pos |
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271 TInt y = aPosition.iY + (iViewPosition.iY - (iHeight/2)) - iListOffset.iY; |
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272 y /= iRowHeight; |
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273 return y >= iItems.Count() || y < 0 ? KErrNotFound : y; |
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274 } |
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275 |
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276 // ----------------------------------------------------------------------------- |
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277 // CHgList::DoHandleKeyEvent() |
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278 // ----------------------------------------------------------------------------- |
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279 // |
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280 TBool CHgList::DoHandleKeyEvent(const TKeyEvent& aKeyEvent) |
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281 { |
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282 TBool ret = ETrue; |
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283 switch( aKeyEvent.iCode ) |
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284 { |
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285 case EKeyUpArrow: |
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286 HandleUpArrow(); |
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287 break; |
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288 case EKeyDownArrow: |
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289 HandleDownArrow(); |
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290 break; |
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291 case EKeyLeftArrow: |
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292 case EKeyRightArrow: |
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293 default: |
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294 ret = EFalse; |
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295 break; |
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296 } |
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297 |
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298 return ret; |
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299 } |
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300 |
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301 // ----------------------------------------------------------------------------- |
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302 // CHgList::HandleDownArrow() |
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303 // ----------------------------------------------------------------------------- |
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304 // |
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305 void CHgList::HandleDownArrow() |
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306 { |
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307 if( iSelectedIndex == KErrNotFound ) |
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308 { |
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309 SelectDefaultItem(); |
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310 } |
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311 else |
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312 { |
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313 if( iSelectedIndex <= iRows - 1 ) |
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314 { |
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315 const TInt nextIndex = iSelectedIndex == (iRows - 1) ? |
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316 0 : iSelectedIndex + 1; |
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317 |
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318 if( iSelectionMode == ESelectionMark ) |
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319 { |
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320 Mark( iSelectedIndex ); |
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321 Mark( nextIndex ); |
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322 } |
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323 else if( iSelectionMode == ESelectionUnMark ) |
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324 { |
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325 UnMark( iSelectedIndex ); |
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326 UnMark( nextIndex ); |
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327 } |
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328 iSelectedIndex = nextIndex; |
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329 FitSelectionToView(); |
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330 SelectionChanged(); |
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331 DrawDeferred(); |
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332 } |
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333 } |
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334 } |
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335 |
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336 // ----------------------------------------------------------------------------- |
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337 // CHgList::HandleUpArrow() |
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338 // ----------------------------------------------------------------------------- |
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339 // |
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340 void CHgList::HandleUpArrow() |
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341 { |
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342 if( iSelectedIndex == KErrNotFound ) |
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343 { |
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344 SelectDefaultItem(); |
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345 } |
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346 else |
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347 { |
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348 if( iSelectedIndex >= 0 ) |
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349 { |
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350 const TInt nextIndex = iSelectedIndex == 0 ? |
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351 iRows - 1 : iSelectedIndex - 1; |
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352 |
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353 if( iSelectionMode == ESelectionMark ) |
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354 { |
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355 Mark( iSelectedIndex ); |
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356 Mark( nextIndex ); |
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357 } |
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358 else if( iSelectionMode == ESelectionUnMark ) |
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359 { |
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360 UnMark( iSelectedIndex ); |
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361 UnMark( nextIndex ); |
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362 } |
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363 iSelectedIndex = nextIndex; |
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364 FitSelectionToView(); |
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365 SelectionChanged(); |
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366 DrawDeferred(); |
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367 } |
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368 } |
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369 } |
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370 |
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371 // ----------------------------------------------------------------------------- |
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372 // CHgList::FitSelectionToView() |
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373 // ----------------------------------------------------------------------------- |
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374 // |
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375 void CHgList::FitSelectionToView() |
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376 { |
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377 FitRowToView( iSelectedIndex ); |
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378 } |
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379 |
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380 // ----------------------------------------------------------------------------- |
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381 // CHgList::ListRect() |
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382 // ----------------------------------------------------------------------------- |
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383 // |
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384 TRect CHgList::ListRect() const |
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385 { |
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386 TRect rect(iListOffset, TSize(iWidth,iHeight)); |
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387 if(!iScrollbar->IsStatic()) |
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388 { |
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389 TAknLayoutRect areaaftersb; |
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390 areaaftersb.LayoutRect(rect, iLayoutData->BaseLayout()); |
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391 rect = areaaftersb.Rect(); |
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392 } |
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393 return rect; |
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394 } |
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395 |
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396 // ----------------------------------------------------------------------------- |
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397 // CHgList::SelectDefaultItem() |
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398 // ----------------------------------------------------------------------------- |
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399 // |
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400 void CHgList::SelectDefaultItem() |
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401 { |
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402 if( iCurrentRow >= 0 && iCurrentRow < iItems.Count() ) |
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403 { |
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404 iSelectedIndex = iCurrentRow; |
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405 FitSelectionToView(); |
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406 SelectionChanged(); |
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407 |
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408 DrawDeferred(); |
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409 } |
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410 } |
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411 |
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412 TInt CHgList::CurrentIndex() |
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413 { |
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414 return iCurrentRow; |
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415 } |
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416 |
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417 TBool CHgList::IsDisplayed( TInt aIndex ) |
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418 { |
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419 TInt start = CurrentIndex(); |
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420 TInt rowsPerView = ItemsOnScreen(); |
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421 if( (iViewPosition.iY-(iHeight/2))%(iRowHeight) ) |
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422 ++rowsPerView; |
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423 TInt end = start + rowsPerView; |
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424 return aIndex >= start && aIndex <= end; |
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425 } |
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426 |
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427 // ----------------------------------------------------------------------------- |
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428 // CHgList::FitTopItemToView() |
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429 // ----------------------------------------------------------------------------- |
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430 // |
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431 void CHgList::FitTopItemToView( TInt aIndex ) |
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432 { |
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433 // Higlighted item is set to top of the list |
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434 TInt newPos = aIndex*iRowHeight + iHeight/2; |
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435 |
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436 if( ItemsOnScreen() >= iItems.Count() ) |
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437 { |
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438 newPos = iHeight/2; |
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439 } |
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440 else |
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441 { |
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442 const TInt endMid = TotalSize().iHeight - iHeight/2; |
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443 if( newPos > endMid ) |
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444 { |
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445 // We are presenting last items in the list |
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446 newPos = endMid; |
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447 } |
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448 } |
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449 |
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450 iViewPosition.iY = newPos; |
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451 HandleViewPositionChanged(); |
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452 } |
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453 |
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454 // End of File |