1 /* |
1 /* |
2 * Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies). |
2 * Copyright (c) 1997-2010 Nokia Corporation and/or its subsidiary(-ies). |
3 * All rights reserved. |
3 * All rights reserved. |
4 * This component and the accompanying materials are made available |
4 * This component and the accompanying materials are made available |
5 * under the terms of "Eclipse Public License v1.0" |
5 * under the terms of "Eclipse Public License v1.0" |
6 * which accompanies this distribution, and is available |
6 * which accompanies this distribution, and is available |
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
655 _AKNTRACE_FUNC_EXIT; |
655 _AKNTRACE_FUNC_EXIT; |
656 } |
656 } |
657 |
657 |
658 EXPORT_C TInt CListBoxView::NumberOfItemsThatFitInRect(const TRect& aRect) const |
658 EXPORT_C TInt CListBoxView::NumberOfItemsThatFitInRect(const TRect& aRect) const |
659 { |
659 { |
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660 TInt itemNumber = 0; |
660 if (iItemHeight == 0) |
661 if (iItemHeight == 0) |
661 { |
662 { |
662 _AKNTRACE( "Number of items is 0" ); |
663 _AKNTRACE( "Number of items is 0" ); |
663 return 0; |
664 return itemNumber; |
664 } |
665 } |
665 TInt items = aRect.Height() / iItemHeight; |
666 TInt items = aRect.Height() / iItemHeight; |
666 if ( ( iVerticalOffset != 0 ) || ( (aRect.Height() - iVerticalOffset) % iItemHeight > 0 ) ) items++; |
667 TInt extraHeight = aRect.Height() % iItemHeight; |
667 _AKNTRACE( "Number of items is %d", items ); |
668 // if there is offset or extra height, then there is at least one partical |
668 return items; |
669 // displayed item |
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670 if ( iVerticalOffset != 0 || extraHeight > 0 ) |
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671 { |
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672 items++; |
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673 } |
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674 // if extra height is not totally taken by top partically displayed item, |
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675 // then there is still place to display a partcial item in bottom. consider |
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676 // a example which view height is 35 and item height is 10, then it's possible |
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677 // to display 5 items with the height like 3,10,10,10,2 |
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678 if ( iVerticalOffset != 0 && |
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679 extraHeight != 0 && |
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680 ( iItemHeight + iVerticalOffset ) < extraHeight ) |
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681 { |
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682 items++; |
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683 } |
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684 itemNumber = items; |
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685 _AKNTRACE( "Number of items is %d", itemNumber ); |
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686 return itemNumber; |
669 } |
687 } |
670 |
688 |
671 EXPORT_C void CListBoxView::DeselectRangeL(TInt aItemIndex1, TInt aItemIndex2) |
689 EXPORT_C void CListBoxView::DeselectRangeL(TInt aItemIndex1, TInt aItemIndex2) |
672 { |
690 { |
673 TInt startItem, endItem; |
691 TInt startItem, endItem; |
813 DrawItem(oldCurrentItemIndex); |
831 DrawItem(oldCurrentItemIndex); |
814 } |
832 } |
815 } |
833 } |
816 else // items will get redrawn anyway |
834 else // items will get redrawn anyway |
817 { |
835 { |
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836 // As the iVerticalOffset is changed in CalcNewTopItemIndexSoItemIsVisible(), |
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837 // and ScrollToMakeItemVisible() will call the CalcNewTopItemIndexSoItemIsVisible() again, |
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838 // which will use iVerticalOffset to do some judgementes, |
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839 // we must set iVerticalOffset back to original value. |
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840 iVerticalOffset = oldVerticalOffset; |
818 ScrollToMakeItemVisible(iCurrentItemIndex); |
841 ScrollToMakeItemVisible(iCurrentItemIndex); |
819 } |
842 } |
820 UpdateSelectionL(aSelectionMode); |
843 UpdateSelectionL(aSelectionMode); |
821 iFlags &= ~EOffsetChanged; |
844 iFlags &= ~EOffsetChanged; |
822 } |
845 } |
949 { |
972 { |
950 _AKNTRACE_FUNC_EXIT; |
973 _AKNTRACE_FUNC_EXIT; |
951 return; |
974 return; |
952 } |
975 } |
953 |
976 |
954 TBool transparencyEnabled( CAknEnv::Static()->TransparencyEnabled() ); |
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955 |
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956 if ((ITEM_EXISTS_ONCE(aItemIndex)) && ItemIsVisible(aItemIndex)) |
977 if ((ITEM_EXISTS_ONCE(aItemIndex)) && ItemIsVisible(aItemIndex)) |
957 { |
978 { |
958 TBool drawingInitiated = ETrue; |
979 TBool drawingInitiated = ETrue; |
959 |
980 |
960 if ( transparencyEnabled ) |
981 if ( iWin && iWin->GetDrawRect() == TRect::EUninitialized ) |
961 { |
982 { |
962 if ( iWin && iWin->GetDrawRect() == TRect::EUninitialized ) |
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963 { |
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964 #ifdef RD_UI_TRANSITION_EFFECTS_LIST |
983 #ifdef RD_UI_TRANSITION_EFFECTS_LIST |
965 MAknListBoxTfxInternal* transApi = |
984 MAknListBoxTfxInternal* transApi = |
966 CAknListLoader::TfxApiInternal( iGc ); |
985 CAknListLoader::TfxApiInternal( iGc ); |
967 drawingInitiated = transApi && !transApi->EffectsDisabled(); |
986 drawingInitiated = transApi && !transApi->EffectsDisabled(); |
968 #else |
987 #else |
969 drawingInitiated = EFalse; |
988 drawingInitiated = EFalse; |
970 #endif |
989 #endif |
971 } |
990 } |
972 |
991 |
973 if ( !drawingInitiated ) |
992 if ( !drawingInitiated ) |
974 { |
993 { |
975 TRect rect( ItemPos(aItemIndex), ItemSize(aItemIndex) ); |
994 TRect rect( ItemPos(aItemIndex), iItemDrawer->ItemCellSize() ); |
976 rect.Intersection( iViewRect ); |
995 rect.Intersection( iViewRect ); |
977 iWin->Invalidate( rect ); |
996 iWin->Invalidate( rect ); |
978 iWin->BeginRedraw( rect ); |
997 iWin->BeginRedraw( rect ); |
979 } |
998 } |
980 } |
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981 |
999 |
982 #ifdef RD_UI_TRANSITION_EFFECTS_LIST |
1000 #ifdef RD_UI_TRANSITION_EFFECTS_LIST |
983 MAknListBoxTfxInternal *transApi = CAknListLoader::TfxApiInternal( iGc ); |
1001 MAknListBoxTfxInternal *transApi = CAknListLoader::TfxApiInternal( iGc ); |
984 if ( transApi ) |
1002 if ( transApi ) |
985 { |
1003 { |
987 ItemSize(aItemIndex) ); |
1005 ItemSize(aItemIndex) ); |
988 transApi->BeginRedraw( MAknListBoxTfxInternal::EListItem, rect, aItemIndex ); |
1006 transApi->BeginRedraw( MAknListBoxTfxInternal::EListItem, rect, aItemIndex ); |
989 transApi->StartDrawing( MAknListBoxTfxInternal::EListItem ); |
1007 transApi->StartDrawing( MAknListBoxTfxInternal::EListItem ); |
990 } |
1008 } |
991 #endif // RD_UI_TRANSITION_EFFECTS_LIST |
1009 #endif // RD_UI_TRANSITION_EFFECTS_LIST |
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1010 |
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1011 TBool backgroundDrawingSuppressed = ( iItemDrawer |
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1012 && ( iItemDrawer->Flags() |
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1013 & ( CListItemDrawer::EDrawWholeBackground |
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1014 | CListItemDrawer::EBackgroundDrawn ) ) ); |
992 |
1015 |
993 iGc->SetClippingRect( iViewRect ); |
1016 if ( !backgroundDrawingSuppressed ) |
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1017 { |
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1018 iGc->SetClippingRect( iViewRect ); |
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1019 } |
994 |
1020 |
995 #ifdef RD_UI_TRANSITION_EFFECTS_LIST |
1021 #ifdef RD_UI_TRANSITION_EFFECTS_LIST |
996 if ( transApi ) |
1022 if ( transApi ) |
997 { |
1023 { |
998 transApi->StopDrawing(); |
1024 transApi->StopDrawing(); |
1180 _AKNTRACE_FUNC_ENTER; |
1209 _AKNTRACE_FUNC_ENTER; |
1181 #ifdef _DEBUG |
1210 #ifdef _DEBUG |
1182 RDebug::Print( _L( "CListBoxView::CalcNewTopItemIndexSoItemIsVisible" ) ); |
1211 RDebug::Print( _L( "CListBoxView::CalcNewTopItemIndexSoItemIsVisible" ) ); |
1183 #endif // _DEBUG |
1212 #endif // _DEBUG |
1184 TInt newTopItemIndex=iTopItemIndex; |
1213 TInt newTopItemIndex=iTopItemIndex; |
1185 const TInt numItemsThatFitInRect=NumberOfItemsThatFitInRect(iViewRect); |
1214 const TInt numItemsThatFitInRect=NumberOfItemsThatFitInRect( iViewRect ); |
1186 if (aItemIndex < iTopItemIndex || numItemsThatFitInRect == 0) |
1215 if ( aItemIndex < iTopItemIndex || numItemsThatFitInRect == 0 ) |
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1216 { |
1187 newTopItemIndex = aItemIndex; |
1217 newTopItemIndex = aItemIndex; |
1188 else if (aItemIndex > iBottomItemIndex) |
1218 } |
1189 newTopItemIndex = aItemIndex - numItemsThatFitInRect + 1; |
1219 else |
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1220 { |
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1221 if (aItemIndex > iBottomItemIndex) |
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1222 { |
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1223 newTopItemIndex = aItemIndex - numItemsThatFitInRect + 1; |
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1224 } |
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1225 } |
1190 |
1226 |
1191 if (!ITEM_EXISTS_ONCE(newTopItemIndex) && newTopItemIndex != 0 ) |
1227 if (!ITEM_EXISTS_ONCE(newTopItemIndex) && newTopItemIndex != 0 ) |
1192 { // if application fails to call HandleItemAdditionL(), we might go here. |
1228 { // if application fails to call HandleItemAdditionL(), we might go here. |
1193 // we dont want our OfferKeyEventL() to panic in that case. |
1229 // we dont want our OfferKeyEventL() to panic in that case. |
1194 newTopItemIndex = iTopItemIndex; |
1230 newTopItemIndex = iTopItemIndex; |
1405 _AKNTRACE( "itemPartiallyVisible is %d", itemPartiallyVisible ); |
1448 _AKNTRACE( "itemPartiallyVisible is %d", itemPartiallyVisible ); |
1406 _AKNTRACE_FUNC_EXIT; |
1449 _AKNTRACE_FUNC_EXIT; |
1407 return itemPartiallyVisible; |
1450 return itemPartiallyVisible; |
1408 } |
1451 } |
1409 |
1452 |
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1453 |
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1454 // --------------------------------------------------------------------------- |
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1455 // Resets the selection state so that there is nothing selected. |
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1456 // --------------------------------------------------------------------------- |
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1457 // |
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1458 void CListBoxView::ClearSelection( TBool aDrawItems ) |
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1459 { |
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1460 _AKNTRACE_FUNC_ENTER; |
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1461 |
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1462 __ASSERT_DEBUG( iSelectionIndexes, |
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1463 Panic( EEikPanicListBoxNoSelIndexArray ) ); |
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1464 |
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1465 TInt numSelectedItems = iSelectionIndexes->Count(); |
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1466 TKeyArrayFix key( 0, ECmpTInt ); |
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1467 TInt selectedItemIndex; |
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1468 TInt pos; |
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1469 |
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1470 #ifdef RD_UI_TRANSITION_EFFECTS_LIST |
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1471 MAknListBoxTfxInternal* transApi = CAknListLoader::TfxApiInternal( iGc ); |
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1472 #endif // RD_UI_TRANSITION_EFFECTS_LIST |
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1473 |
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1474 for ( TInt i = 0; i < numSelectedItems; i++ ) |
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1475 { |
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1476 selectedItemIndex = ( *( iSelectionIndexes ) )[0]; |
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1477 |
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1478 if ( !( iSelectionIndexes->Find( selectedItemIndex, key, pos ) ) ) |
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1479 { |
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1480 #ifdef RD_UI_TRANSITION_EFFECTS_LIST |
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1481 if ( transApi ) |
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1482 { |
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1483 transApi->Invalidate( MAknListBoxTfxInternal::EListItem, |
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1484 selectedItemIndex ); |
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1485 } |
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1486 #endif // RD_UI_TRANSITION_EFFECTS_LIST |
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1487 |
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1488 iSelectionIndexes->Delete( pos ); |
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1489 |
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1490 if ( aDrawItems ) |
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1491 { |
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1492 DrawItem( selectedItemIndex ); |
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1493 } |
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1494 } |
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1495 } |
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1496 |
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1497 ClearSelectionAnchorAndActiveIndex(); |
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1498 |
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1499 _AKNTRACE_FUNC_EXIT; |
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1500 } |
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1501 |
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1502 |
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1503 // --------------------------------------------------------------------------- |
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1504 // Sets all items selected. |
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1505 // --------------------------------------------------------------------------- |
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1506 // |
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1507 void CListBoxView::SelectAllL( TBool aDrawItems ) |
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1508 { |
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1509 _AKNTRACE_FUNC_ENTER; |
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1510 |
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1511 __ASSERT_DEBUG( iSelectionIndexes, |
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1512 Panic( EEikPanicListBoxNoSelIndexArray ) ); |
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1513 __ASSERT_DEBUG( iModel, Panic( EEikPanicListBoxNoModel ) ); |
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1514 |
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1515 #ifdef RD_UI_TRANSITION_EFFECTS_LIST |
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1516 MAknListBoxTfxInternal* transApi = CAknListLoader::TfxApiInternal( iGc ); |
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1517 #endif // RD_UI_TRANSITION_EFFECTS_LIST |
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1518 |
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1519 ClearSelection(); |
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1520 TInt numItems = iModel->NumberOfItems(); |
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1521 |
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1522 for ( TInt i = 0; i < numItems; i++ ) |
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1523 { |
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1524 if ( !iItemDrawer->Properties( i ).IsSelectionHidden() ) |
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1525 { |
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1526 #ifdef RD_UI_TRANSITION_EFFECTS_LIST |
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1527 if ( transApi ) |
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1528 { |
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1529 transApi->Invalidate( MAknListBoxTfxInternal::EListItem, i ); |
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1530 } |
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1531 #endif // RD_UI_TRANSITION_EFFECTS_LIST |
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1532 |
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1533 iSelectionIndexes->AppendL( i ); |
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1534 |
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1535 if ( aDrawItems ) |
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1536 { |
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1537 DrawItem( i ); |
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1538 } |
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1539 } |
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1540 } |
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1541 _AKNTRACE_FUNC_EXIT; |
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1542 } |
1410 |
1543 |
1411 |
1544 |
1412 // class CSnakingListBoxView |
1545 // class CSnakingListBoxView |
1413 |
1546 |
1414 EXPORT_C CSnakingListBoxView::CSnakingListBoxView() |
1547 EXPORT_C CSnakingListBoxView::CSnakingListBoxView() |