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