/*
* Copyright (c) 2002-2004 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of "Eclipse Public License v1.0"
* which accompanies this distribution, and is available
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description: Edit mode for widget drag and drop.
*
*/
// System includes
#include <AknUtils.h>
#include <gulgcmap.h>
#include <barsread.h>
#ifdef RD_TACTILE_FEEDBACK
#include <touchfeedback.h>
#endif // RD_TACTILE_FEEDBACK
// User includes
#include "xnappuiadapter.h"
#include "xnviewmanager.h"
#include "xnviewadapter.h"
#include "xnviewdata.h"
#include "xnnodeimpl.h"
#include "xndomnode.h"
#include "xnnode.h"
#include "xnproperty.h"
#include "xnuiengine.h"
#include "xncontroladapter.h"
#include "xnpopupcontroladapter.h"
#include "xnviewcontroladapter.h"
#include "xnfocuscontrol.h"
#include "xneditor.h"
#include "xntype.h"
#include "xnmenu.h"
#include "xnbackgroundmanager.h"
#include "xneditmode.h"
// Constants
_LIT8( KMenu, "menu" );
// ============================ LOCAL FUNCTIONS ================================
// -----------------------------------------------------------------------------
// CopyBitmap
// Copies a data from source bitmap to target bitmap.
// -----------------------------------------------------------------------------
//
static TInt CopyBitmap( CFbsBitmap& aTarget, const CFbsBitmap& aSource,
TPoint aSourcePoint )
{
TSize targetSize( aTarget.SizeInPixels() );
TSize sourceSize( aSource.SizeInPixels() );
TInt lineLength( targetSize.iWidth );
TInt maxSourceLineLength( sourceSize.iWidth - aSourcePoint.iX );
if ( lineLength > maxSourceLineLength )
{
lineLength = maxSourceLineLength;
}
TInt rowCount( targetSize.iHeight );
TInt maxSourceRowCount( sourceSize.iHeight - aSourcePoint.iY );
if ( rowCount > maxSourceRowCount )
{
rowCount = maxSourceRowCount;
}
// Get bitmap display mode
TDisplayMode displayMode( aSource.DisplayMode() );
// Create buffer for a scan line
HBufC8* scanLine = HBufC8::New( aSource.ScanLineLength(
lineLength, displayMode ) );
if ( !scanLine )
{
return KErrNoMemory;
}
TPtr8 scanPtr( scanLine->Des() );
// Copy all rows to destination bitmap
for ( TInt row = 0; row < rowCount; row++ )
{
aSource.GetScanLine( scanPtr,
TPoint( aSourcePoint.iX, aSourcePoint.iY + row ),
lineLength, displayMode );
aTarget.SetScanLine( scanPtr, row );
}
delete scanLine;
return KErrNone;
}
// -----------------------------------------------------------------------------
// SetVisibilityL
// Sets node either visible or hidden
// -----------------------------------------------------------------------------
//
static void SetVisibilityL( CXnNode& aNode, const TDesC8& aVisibility )
{
CXnUiEngine* engine( aNode.UiEngine() );
CXnDomStringPool* sp( aNode.DomNode()->StringPool() );
CXnProperty* prop = CXnProperty::NewL(
XnPropertyNames::style::common::KVisibility,
aVisibility,
CXnDomPropertyValue::EString, *sp );
CleanupStack::PushL( prop );
aNode.SetPropertyL( prop );
CleanupStack::Pop( prop );
}
// -----------------------------------------------------------------------------
// ResolveMenuIdL
// Resolves <menu> element and its id based on aMenuBar <menubar> element
// -----------------------------------------------------------------------------
//
static HBufC* ResolveMenuIdL( CXnNode& aMenuBar )
{
HBufC* retval( NULL );
RPointerArray< CXnNode >& children( aMenuBar.Children() );
for ( TInt i = 0; i < children.Count(); i++ )
{
CXnNode* child( children[i] );
if ( child->Type()->Type() == KMenu )
{
CXnProperty* prop(
child->GetPropertyL( XnPropertyNames::common::KId ) );
if ( prop )
{
// Ownership is passed to the caller
retval = prop->StringValueL();
}
break;
}
}
return retval;
}
#ifdef RD_TACTILE_FEEDBACK
// -----------------------------------------------------------------------------
// Feedback
// Gives instant touch feedback
// -----------------------------------------------------------------------------
//
static void Feedback( TTouchLogicalFeedback aType )
{
MTouchFeedback* fb( MTouchFeedback::Instance() );
if ( fb )
{
fb->InstantFeedback( aType );
}
}
#endif // RD_TACTILE_FEEDBACK
// ============================ MEMBER FUNCTIONS ===============================
// -----------------------------------------------------------------------------
// CXnEditMode::CXnEditMode
// C++ default constructor can NOT contain any code, that
// might leave.
// -----------------------------------------------------------------------------
//
CXnEditMode::CXnEditMode( CXnUiEngine& aUiEngine )
: iUiEngine( aUiEngine ),
iViewManager( *iUiEngine.ViewManager() ),
iState( CXnEditMode::ENone ),
iStylusDownPos( TPoint::EUninitialized ),
iPreviousPos( TPoint::EUninitialized ),
iDrawPos( TPoint::EUninitialized ),
iLastDrawRect( TRect::EUninitialized )
{
}
// -----------------------------------------------------------------------------
// CXnEditMode::ConstructL
// Symbian 2nd phase constructor can leave.
// -----------------------------------------------------------------------------
//
void CXnEditMode::ConstructL()
{
CreateWindowL();
ActivateL();
Window().SetRequiredDisplayMode( EColor16MA );
if ( Window().SetTransparencyAlphaChannel() == KErrNone )
{
Window().SetBackgroundColor( ~0 );
}
EnableDragEvents();
CCoeControl::MakeVisible( EFalse );
TRect rect;
AknLayoutUtils::LayoutMetricsRect( AknLayoutUtils::EMainPane, rect );
iMainpane = new ( ELeave ) CFbsBitmap;
User::LeaveIfError( iMainpane->Create( TSize(), EColor16MA ) );
iWidget = new ( ELeave ) CFbsBitmap;
User::LeaveIfError( iWidget->Create( TSize(), EColor16MA ) );
iBmpDevice = CFbsBitmapDevice::NewL( iMainpane );
iBmpGc = CFbsBitGc::NewL();
iBmpGc->Activate( iBmpDevice );
iMapGc = CWindowToBitmapMappingGc::NewL(
*static_cast< CWsScreenDevice* >( SystemGc().Device() ), *iBmpGc );
SetRect( rect );
}
// -----------------------------------------------------------------------------
// CXnEditMode::NewL
// Two-phased constructor.
// -----------------------------------------------------------------------------
//
CXnEditMode* CXnEditMode::NewL( CXnUiEngine& aEngine )
{
CXnEditMode* self = new ( ELeave ) CXnEditMode( aEngine );
CleanupStack::PushL( self );
self->ConstructL();
CleanupStack::Pop( self );
return self;
}
// -----------------------------------------------------------------------------
// CXnEditMode::~CXnEditMode
// Destructor
// -----------------------------------------------------------------------------
//
CXnEditMode::~CXnEditMode()
{
TRAP_IGNORE( StopDragL() );
delete iMapGc;
delete iBmpGc;
delete iBmpDevice;
delete iMainpane;
delete iWidget;
}
// -----------------------------------------------------------------------------
// CXnEditMode::UpdateScreen
// Updates invalid parts of the screen. All drawing must be done from here
// -----------------------------------------------------------------------------
//
void CXnEditMode::UpdateScreen()
{
if ( iState == CXnEditMode::EDragging )
{
if ( !iWidget || iDrawPos == TPoint::EUninitialized )
{
return;
}
TRect drawRect( iDrawPos, iWidget->SizeInPixels() );
if ( iLastDrawRect != TRect::EUninitialized )
{
drawRect.BoundingRect( iLastDrawRect );
}
iLastDrawRect = drawRect;
DrawNow( drawRect );
}
else
{
if ( iLastDrawRect != TRect::EUninitialized )
{
DrawNow( iLastDrawRect );
}
iDrawPos.SetXY( 0, 0 );
iLastDrawRect = TRect::EUninitialized;
}
}
// -----------------------------------------------------------------------------
// CXnEditMode::Draw
//
// -----------------------------------------------------------------------------
//
void CXnEditMode::Draw( const TRect& aRect ) const
{
CWindowGc& gc( SystemGc() );
gc.SetClippingRect( Rect() );
gc.Clear( aRect );
if ( iWidget && iState == CXnEditMode::EDragging )
{
gc.BitBlt( iDrawPos, iWidget );
}
gc.Reset();
}
// -----------------------------------------------------------------------------
// CXnEditMode::MakeVisible
//
// -----------------------------------------------------------------------------
//
void CXnEditMode::MakeVisible( TBool aVisible )
{
CXnAppUiAdapter& appui( iUiEngine.AppUiAdapter() );
CXnViewControlAdapter* control =
static_cast< CXnViewControlAdapter* >(
appui.ViewManager().ActiveViewData().ViewNode()->Control() );
RWindow& window( Window() );
TBool visible( IsVisible() ? ETrue : EFalse );
if ( aVisible == visible )
{
if( aVisible )
{
// If a new Homescreen page has been added in Edit mode, bring the control back to the front
control->DrawableWindow()->SetPointerGrab( EFalse );
window.SetOrdinalPosition( 0 );
window.SetPointerGrab( ETrue );
window.ClaimPointerGrab();
}
return;
}
CCoeControl::MakeVisible( aVisible );
// Remove focus
appui.HideFocus();
if ( aVisible )
{
control->DrawableWindow()->SetPointerGrab( EFalse );
window.SetOrdinalPosition( 0 );
window.SetPointerGrab( ETrue );
window.ClaimPointerGrab();
TRAP_IGNORE( appui.HandleEnterEditModeL( ETrue ) );
}
else
{
window.SetPointerGrab( EFalse );
control->DrawableWindow()->SetPointerGrab( ETrue );
TRAP_IGNORE( appui.HandleEnterEditModeL( EFalse ) );
}
// Update background
appui.ViewAdapter().BgManager().DrawNow();
}
// -----------------------------------------------------------------------------
// CXnEditMode::HandlePointerEventL
//
// -----------------------------------------------------------------------------
//
void CXnEditMode::HandlePointerEventL( const TPointerEvent& aPointerEvent )
{
if ( !AknLayoutUtils::PenEnabled() )
{
return;
}
if ( aPointerEvent.iType != TPointerEvent::EButton1Down &&
iStylusDownPos == TPoint::EUninitialized )
{
return;
}
// For performance reasons, discard the event if delta between previous
// event is within 'KOffset'.
TInt KOffset( 5 );
TRect rect(
aPointerEvent.iPosition.iX - KOffset,
aPointerEvent.iPosition.iY - KOffset,
aPointerEvent.iPosition.iX + KOffset,
aPointerEvent.iPosition.iY + KOffset );
if ( aPointerEvent.iType == TPointerEvent::EDrag &&
rect.Contains( iPreviousPos ) )
{
return;
}
RPointerArray< CXnPluginData >& plugins(
iViewManager.ActiveViewData().PluginData() );
CXnNode* node( NULL );
for ( TInt i = 0; i < plugins.Count(); i++ )
{
CXnPluginData* data( plugins[i] );
CXnNode* plugin( data->Owner()->LayoutNode() );
CXnControlAdapter* ctrl( plugin->Control() );
if ( ctrl->IsVisible() &&
ctrl->Rect().Contains( aPointerEvent.iPosition ) )
{
node = plugin;
break;
}
}
if ( !node )
{
if ( iTargetNode )
{
iTargetNode->UnsetStateL( XnPropertyNames::style::common::KFocus );
}
iTargetNode = NULL;
}
if ( node && node != iTargetNode )
{
if ( !node->IsStateSet( XnPropertyNames::style::common::KEdit ) )
{
// Not in edit state
node = NULL;
}
else
{
iTargetNode = node;
iUiEngine.DisableRenderUiLC();
if ( aPointerEvent.iType == TPointerEvent::EButton1Down )
{
iUiEngine.AppUiAdapter().ShowFocus();
node->SetStateL( XnPropertyNames::style::common::KFocus );
#ifdef RD_TACTILE_FEEDBACK
Feedback( ETouchFeedbackBasic );
#endif
}
else if ( aPointerEvent.iType == TPointerEvent::EDrag )
{
if ( iState == CXnEditMode::EDragging )
{
node->SetStateL( XnPropertyNames::style::common::KFocus );
#ifdef RD_TACTILE_FEEDBACK
Feedback( ETouchFeedbackSensitive );
#endif
}
else if ( iDraggingNode &&
!iDraggingNode->MarginRect().Contains( aPointerEvent.iPosition ) )
{
iDraggingNode->UnsetStateL(
XnPropertyNames::style::common::KFocus );
iDraggingNode = NULL;
}
}
CleanupStack::PopAndDestroy();
}
}
if ( aPointerEvent.iType == TPointerEvent::EButton1Down )
{
iDragged = EFalse;
if ( node )
{
CXnPluginData* plugin( iUiEngine.ViewManager()->
ActiveViewData().Plugin( node ) );
if ( plugin && plugin->Occupied() )
{
StartDragL( *plugin );
iDrawPos = iDraggingNode->BorderRect().iTl;
iStylusDownPos = iPreviousPos = aPointerEvent.iPosition;
}
else
{
iDraggingNode = node;
iStylusDownPos = iPreviousPos = aPointerEvent.iPosition;
}
}
}
else if ( aPointerEvent.iType == TPointerEvent::EDrag )
{
const TInt KDragTreshold( 30 );
TInt dx( Abs( aPointerEvent.iPosition.iX - iStylusDownPos.iX ) );
TInt dy( Abs( aPointerEvent.iPosition.iY - iStylusDownPos.iY ) );
TBool dragged( iDragged );
if ( dx > KDragTreshold || dy > KDragTreshold )
{
iDragged = ETrue;
if ( !dragged && iDragged && iDraggingNode &&
iState == CXnEditMode::EDragging )
{
// Hide the node which will be dragged from layout tree
SetVisibilityL( *iDraggingNode,
XnPropertyNames::style::common::visibility::KHidden );
iUiEngine.RenderUIL();
}
}
if ( iDragged && iWidget && iDraggingNode && iState == CXnEditMode::EDragging )
{
// Resolve draw position
TPoint dp( iPreviousPos - aPointerEvent.iPosition );
iDrawPos -= dp;
UpdateScreen();
}
// Update previous position
iPreviousPos = aPointerEvent.iPosition;
}
else if ( aPointerEvent.iType == TPointerEvent::EButton1Up )
{
#ifdef RD_TACTILE_FEEDBACK
MTouchFeedback* feedback( MTouchFeedback::Instance() );
feedback->InstantFeedback( this,ETouchFeedbackBasic,
ETouchFeedbackVibra,
aPointerEvent );
#endif
// Cancel
if ( !iTargetNode || !iDraggingNode ||
iDraggingNode == iTargetNode ||
!iTargetNode->MarginRect().Contains( aPointerEvent.iPosition ) )
{
CXnNode* node( iDraggingNode );
iUiEngine.DisableRenderUiLC();
StopDragL();
iUiEngine.RenderUIL();
CleanupStack::PopAndDestroy(); // DisableRenderUiLC
UpdateScreen();
if ( node && !iDragged )
{
CXnPluginData* plugin( iUiEngine.ViewManager()->
ActiveViewData().Plugin( node ) );
if ( plugin && plugin->Occupied() )
{
CXnNode* popup( iUiEngine.StylusPopupNode() );
if ( popup )
{
CXnPopupControlAdapter* control =
static_cast< CXnPopupControlAdapter* >(
popup->Control() );
if ( control )
{
control->TryDisplayingStylusPopupL( *node );
}
}
}
else
{
// empty slot, start add widget query
iUiEngine.Editor()->SetTargetPlugin( node );
iUiEngine.Editor()->AddWidgetL();
}
}
}
else // Reorder
{
if ( iDraggingNode && iTargetNode )
{
iUiEngine.DisableRenderUiLC();
CXnNode* parent1( iDraggingNode->Parent() );
CXnNode* parent2( iTargetNode->Parent() );
if ( parent1 == parent2 )
{
parent1->ReorderNodesL( iDraggingNode, iTargetNode );
// Update plugin positions to HSPS
iUiEngine.Editor()->ReorderWidgetsL(
iUiEngine.Plugins() );
}
StopDragL();
iUiEngine.RenderUIL();
CleanupStack::PopAndDestroy(); // DisableRenderUiLC
UpdateScreen();
}
}
iUiEngine.AppUiAdapter().HideFocus();
}
}
// -----------------------------------------------------------------------------
// CXnEditMode::OfferKeyEventL
//
// -----------------------------------------------------------------------------
//
TKeyResponse CXnEditMode::OfferKeyEventL( const TKeyEvent& aKeyEvent,
TEventCode aType )
{
if ( IsVisible() && aType == EEventKey )
{
CXnNode* focused( iUiEngine.FocusedNode() );
if ( focused && ( aKeyEvent.iScanCode == EStdKeyDevice3 ||
aKeyEvent.iCode == EKeyEnter ) )
{
CXnPluginData* plugin( iUiEngine.ViewManager()->
ActiveViewData().Plugin( focused ) );
if ( plugin && plugin->Occupied() )
{
// Open context menu
CXnNode* menubar( iUiEngine.MenuBarNode() );
if ( menubar )
{
HBufC* id( ResolveMenuIdL( *menubar ) );
CleanupStack::PushL( id );
if ( id )
{
XnMenuInterface::MXnMenuInterface* menuIf( NULL );
XnComponentInterface::MakeInterfaceL(
menuIf, menubar->AppIfL() );
if ( menuIf )
{
menuIf->TryDisplayingMenuBarL( *id, ETrue );
iUiEngine.Editor()->SetTargetPlugin( focused );
}
}
CleanupStack::PopAndDestroy( id );
}
}
else
{
// empty slot, start add widget query
iUiEngine.Editor()->SetTargetPlugin( focused );
iUiEngine.Editor()->AddWidgetL();
}
return EKeyWasConsumed;
}
}
return EKeyWasNotConsumed;
}
// -----------------------------------------------------------------------------
// CXnEditMode::SizeChanged
//
// -----------------------------------------------------------------------------
//
void CXnEditMode::SizeChanged()
{
TSize size( Rect().Size() );
iBmpDevice->Resize( size );
// Needs to be called if the device is resized
iBmpGc->Resized();
iMainpane->Resize( size );
}
// -----------------------------------------------------------------------------
// CXnEditMode::StartDragL()
//
// -----------------------------------------------------------------------------
//
void CXnEditMode::StartDragL( const CXnPluginData& aPlugin )
{
CXnNode* node( aPlugin.Owner()->LayoutNode() );
CXnControlAdapter* control( node->Control() );
CXnControlAdapter* parent(
aPlugin.Parent()->Node()->LayoutNode()->Control() );
TRect rect( control->Rect() );
// Clear first with alpha
TRgb rgb( TRgb::Color16MA( 0 ) );
rgb.SetAlpha( 64 );
iMapGc->SetDrawMode( CGraphicsContext::EDrawModeWriteAlpha );
iMapGc->SetBrushStyle( CGraphicsContext::ESolidBrush );
iMapGc->SetBrushColor( rgb );
iMapGc->Clear();
iState = CXnEditMode::EShootContent;
CWindowGc* gc( control->CustomGc() );
parent->SetCustomGc( iMapGc );
control->DrawNow( rect );
parent->SetCustomGc( gc );
if ( iWidget->SizeInPixels() != rect.Size() )
{
iWidget->Resize( rect.Size() );
}
iState = CXnEditMode::EDragging;
iDraggingNode = node;
User::LeaveIfError( CopyBitmap( *iWidget, *iMainpane, rect.iTl ) );
}
// -----------------------------------------------------------------------------
// CXnEditMode::StopDragL()
// -----------------------------------------------------------------------------
//
void CXnEditMode::StopDragL()
{
if ( iDraggingNode && iState == CXnEditMode::EDragging )
{
SetVisibilityL( *iDraggingNode,
XnPropertyNames::style::common::visibility::KVisible );
iDraggingNode->SetStateL( XnPropertyNames::style::common::KFocus );
iDraggingNode->Parent()->SetDirtyL( XnDirtyLevel::ELayoutAndRender );
}
iDraggingNode = NULL;
iTargetNode = NULL;
iPreviousPos.SetXY( 0, 0 );
iStylusDownPos.SetXY( 0, 0 );
iState = CXnEditMode::EDragAndDrop;
}
// -----------------------------------------------------------------------------
// CXnEditMode::HandleScreenDeviceChangedL
// -----------------------------------------------------------------------------
//
void CXnEditMode::HandleScreenDeviceChangedL()
{
if ( iState != CXnEditMode::ENone )
{
if ( iState == CXnEditMode::EDragging )
{
IgnoreEventsUntilNextPointerUp();
}
StopDragL();
}
UpdateScreen();
}
// -----------------------------------------------------------------------------
// CXnEditMode::HandleScreenDeviceChangedL
// -----------------------------------------------------------------------------
//
void CXnEditMode::SetClientRect( TRect aRect )
{
SetRect( aRect );
}
// -----------------------------------------------------------------------------
// CXnEditMode::SetEditModeL()
// -----------------------------------------------------------------------------
//
void CXnEditMode::SetEditModeL( CXnEditMode::TEditState aState )
{
// Enter to edit mode
if ( aState == CXnEditMode::EDragAndDrop )
{
iState = aState;
MakeVisible( ETrue );
}
// Exit from edit mode
else if ( aState == CXnEditMode::ENone )
{
iDraggingNode = NULL;
iTargetNode = NULL;
iUiEngine.Editor()->SetTargetPlugin( NULL );
iState = aState;
MakeVisible( EFalse );
}
}
// -----------------------------------------------------------------------------
// CXnEditMode::EditState()
//
// -----------------------------------------------------------------------------
//
CXnEditMode::TEditState CXnEditMode::EditState() const
{
return iState;
}
// -----------------------------------------------------------------------------
// CXnEditMode::StopDraggingL()
// -----------------------------------------------------------------------------
//
void CXnEditMode::StopDraggingL()
{
if( iState == CXnEditMode::EDragging )
{
StopDragL();
UpdateScreen();
}
}
// End of file