--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/radioapp/radiowidgets/src/radiofrequencystrip.cpp Fri Mar 19 09:29:04 2010 +0200
@@ -0,0 +1,640 @@
+/*
+* Copyright (c) 2009 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:
+*
+*/
+
+// System includes
+#include <qpainter>
+#include <qstringlistmodel>
+#include <qpainterpath>
+#include <qgraphicssceneresizeevent>
+#include <qpen>
+#include <hbpushbutton.h>
+#include <qtimer>
+
+#include "radiofrequencystrip.h"
+#include "radiofrequencyitem.h"
+#include "radiouiengine.h"
+#include "radiostation.h"
+#include "radiouiutilities.h"
+#include "radiologger.h"
+
+// Frequency lines
+const int KTabHeightSmall = 10;
+const int KTabHeightBig = 15;
+const int KTabHeightFavorite = 15;
+const int KTabWidthFavorite = 4;
+const qreal KIndicatorWidth = 2.0;
+
+const qreal KRounder = 0.5;
+const int KSelectorWidth = 2;
+const int KSelectorZPos = 100;
+
+const int K100Khz = 100000;
+
+const int KTouchPosThreshold = 30;
+
+const QString KSlideToLeft = "SlideToLeft";
+const QString KSlideFromLeft = "SlideFromLeft";
+const QString KSlideToRight = "SlideToRight";
+const QString KSlideFromRight = "SlideFromRight";
+
+/*!
+ *
+ */
+static QLineF makeTab( qreal pos, int height )
+{
+ return QLineF( pos, KHeight - height, pos, KHeight );
+}
+
+/*!
+ *
+ */
+RadioFrequencyStrip::RadioFrequencyStrip( uint minFrequency,
+ uint maxFrequency,
+ uint stepSize,
+ uint currentFrequency,
+ RadioUiEngine* engine ) :
+ RadioStripBase( 0 ),
+ mMinFrequency( minFrequency ),
+ mMaxFrequency( maxFrequency ),
+ mFrequencyStepSize( stepSize ),
+ mEngine( engine ),
+ mSelectorImage( new QGraphicsPixmapItem( this ) ),
+ mSeparatorPos( 0.0 ),
+ mMaxWidth( 0 ),
+ mSelectorPos( 0.0 ),
+ mFrequency( currentFrequency ),
+ mFavoriteSelected( false ),
+ mLeftButton( new HbPushButton( this ) ),
+ mRightButton( new HbPushButton( this ) ),
+ mButtonTimer( new QTimer( this ) ),
+ mIsPanGesture( false )
+{
+ mButtonTimer->setInterval( 500 );
+ mButtonTimer->setSingleShot( true );
+ connectAndTest( mButtonTimer, SIGNAL(timeout()), this, SLOT(toggleButtons()) );
+
+ //TODO: Remove. Stepsize hardcoded to 100 Khz in europe region during demo
+ if ( mFrequencyStepSize < K100Khz ) {
+ mFrequencyStepSize = K100Khz;
+ }
+
+ setScrollingStyle( HbScrollArea::PanOrFlick );
+ setItemSize( QSizeF( KWidth, KHeight ) );
+ setFrictionEnabled( true );
+
+ initModel();
+
+ initSelector();
+
+ initItems();
+
+ initButtons();
+}
+
+/*!
+ *
+ */
+void RadioFrequencyStrip::setLeftButtonIcon( const HbIcon& leftButtonIcon )
+{
+ mLeftButtonIcon = leftButtonIcon;
+ if ( mLeftButton ) {
+ mLeftButton->setIcon( mLeftButtonIcon );
+ }
+}
+
+/*!
+ *
+ */
+HbIcon RadioFrequencyStrip::leftButtonIcon() const
+{
+ return mLeftButtonIcon;
+}
+
+/*!
+ *
+ */
+void RadioFrequencyStrip::setRightButtonIcon( const HbIcon& rightButtonIcon )
+{
+ mRightButtonIcon = rightButtonIcon;
+ if ( mRightButton ) {
+ mRightButton->setIcon( mRightButtonIcon );
+ }
+}
+
+/*!
+ *
+ */
+HbIcon RadioFrequencyStrip::rightButtonIcon() const
+{
+ return mRightButtonIcon;
+}
+
+/*!
+ *
+ */
+uint RadioFrequencyStrip::frequency( bool* favorite ) const
+{
+ if ( favorite ) {
+ *favorite = mFrequencies.value( mFrequency ).mFavorite;
+ }
+ return mFrequency;
+}
+
+/*!
+ *
+ */
+void RadioFrequencyStrip::connectLeftButton( const char* signal, QObject* receiver, const char* slot )
+{
+ connectAndTest( mLeftButton, signal, receiver, slot );
+}
+
+/*!
+ *
+ */
+void RadioFrequencyStrip::connectRightButton( const char* signal, QObject* receiver, const char* slot )
+{
+ connectAndTest( mRightButton, signal, receiver, slot );
+}
+
+/*!
+ * Public slot
+ *
+ */
+void RadioFrequencyStrip::favoriteChanged( const RadioStation& station )
+{
+ LOG_SLOT_CALLER;
+ FrequencyPos pos = mFrequencies.value( station.frequency() );
+ updateFavorites( pos.mItem );
+
+ emitFavoriteSelected( station.isFavorite() );
+}
+
+/*!
+ * Public slot
+ *
+ */
+void RadioFrequencyStrip::setFrequency( const uint frequency, int commandSender )
+{
+// LOG_SLOT_CALLER;
+// LOG_FORMAT( "RadioFrequencyStrip::setFrequency, frequency: %d, sender: %d", frequency, commandSender );
+ if ( commandSender != CommandSender::FrequencyStrip && // Not sent by the FrequencyStrip
+ frequency != mFrequency && // Different from the current
+ mFrequencies.contains( frequency ) ) // 0 frequency means any illegal value
+ {
+ scrollToFrequency( frequency, mAutoScrollTime );
+ emitFrequencyChanged( frequency );
+ }
+}
+
+/*!
+ * Private slot
+ *
+ */
+void RadioFrequencyStrip::leftGesture( int DEBUGVAR( speedPixelsPerSecond ) )
+{
+ LOG_FORMAT( "RadioFrequencyStrip::leftGesture. speed: %d", speedPixelsPerSecond );
+ mButtonTimer->stop();
+ mButtonTimer->start();
+ emit swipedLeft();
+}
+
+/*!
+ * Private slot
+ *
+ */
+void RadioFrequencyStrip::rightGesture( int DEBUGVAR( speedPixelsPerSecond ) )
+{
+ LOG_FORMAT( "RadioFrequencyStrip::rightGesture. speed: %d", speedPixelsPerSecond );
+ mButtonTimer->stop();
+ mButtonTimer->start();
+ emit swipedRight();
+}
+
+/*!
+ * Private slot
+ *
+ */
+void RadioFrequencyStrip::panGesture( const QPointF& point )
+{
+ RadioStripBase::panGesture( point );
+ mIsPanGesture = true;
+}
+
+/*!
+ * Private slot
+ */
+void RadioFrequencyStrip::toggleButtons()
+{
+ HbEffect::start( mLeftButton, KSlideFromLeft );
+ HbEffect::start( mRightButton, KSlideFromRight );
+}
+
+/*!
+ * \reimp
+ */
+void RadioFrequencyStrip::updateItemPrimitive( QGraphicsItem* itemToUpdate, int itemIndex )
+{
+ QGraphicsPixmapItem* item = static_cast<QGraphicsPixmapItem*>( itemToUpdate );
+ if ( itemIndex < mFrequencyItems.count() ) {
+ item->setPixmap( mFrequencyItems.at( itemIndex )->updatePrimitive( item ) );
+ }
+}
+
+/*!
+ * \reimp
+ */
+QGraphicsItem* RadioFrequencyStrip::createItemPrimitive( QGraphicsItem* parent )
+{
+ return new QGraphicsPixmapItem( parent );
+}
+
+/*!
+ * \reimp
+ */
+void RadioFrequencyStrip::scrollPosChanged( QPointF newPosition )
+{
+ Q_UNUSED( newPosition );
+
+ if ( isDragging() ) {
+ const int pos = selectorPos();
+ emitFrequencyChanged( mPositions.value( pos ) );
+ }
+}
+
+/*!
+ * \reimp
+ */
+void RadioFrequencyStrip::resizeEvent ( QGraphicsSceneResizeEvent* event )
+{
+ LOG_METHOD_ENTER;
+ RadioStripBase::resizeEvent( event );
+
+ mSelectorPos = event->newSize().width() / 2;
+ mSelectorImage->setOffset( mSelectorPos - (KIndicatorWidth / 2), 0.0 );
+
+ const int stripHeight = event->newSize().height();
+ if ( !mLeftButtonIcon.isNull() ) {
+// mLeftButtonIcon.setSize( QSizeF( stripHeight, stripHeight ) );
+ mLeftButton->resize( stripHeight, stripHeight );
+ mLeftButton->setBackground( mLeftButtonIcon );
+ }
+
+ if ( !mRightButtonIcon.isNull() ) {
+// mRightButtonIcon.setSize( QSizeF( stripHeight, stripHeight ) );
+ mRightButton->resize( stripHeight, stripHeight );
+ mRightButton->setBackground( mRightButtonIcon );
+ }
+ mRightButton->setPos( QPointF( size().width() - mRightButton->size().width(), 0 ) );
+
+ scrollToFrequency( mFrequency, 0 );
+}
+
+/*!
+ * \reimp
+ */
+void RadioFrequencyStrip::showEvent( QShowEvent* event )
+{
+ Q_UNUSED( event );
+ scrollToFrequency( mFrequency, 0 );
+}
+
+/*!
+ * \reimp
+ */
+void RadioFrequencyStrip::mousePressEvent( QGraphicsSceneMouseEvent* event )
+{
+ RadioStripBase::mousePressEvent( event );
+ mIsPanGesture = false;
+ mButtonTimer->stop();
+
+ HbEffect::start( mLeftButton, KSlideToLeft );
+ HbEffect::start( mRightButton, KSlideToRight );
+}
+
+/*!
+ * \reimp
+ */
+void RadioFrequencyStrip::mouseReleaseEvent( QGraphicsSceneMouseEvent* event )
+{
+ RadioStripBase::mouseReleaseEvent( event );
+
+ // Check if the selector is in the invalid area where the strip loops around
+ const int selectorPosition = selectorPos();
+ if ( !mPositions.contains( selectorPosition ) ) {
+ if ( selectorPosition < mMaxWidth - KWidth + mSeparatorPos ) {
+ scrollToFrequency( mMaxFrequency, 500 );
+ emitFrequencyChanged( mMaxFrequency );
+ } else {
+ scrollToFrequency( mMinFrequency, 500 );
+ emitFrequencyChanged( mMinFrequency );
+ }
+ }
+
+// if ( !mIsPanGesture ) {
+// const qreal touchDelta = event->pos().x() - mSelectorPos;
+// const int touchPos = selectorPosition + touchDelta;
+// const uint frequencyAtPos = mPositions.value( touchPos );
+//
+// uint foundFrequency = 0;
+// for ( int i = 0; i < 10; ++i ) {
+// const uint delta = i * mFrequencyStepSize;
+// FrequencyPos leftFreq = mFrequencies.value( frequencyAtPos - delta );
+// FrequencyPos rightFreq = mFrequencies.value( frequencyAtPos + delta );
+//
+// if ( touchPos - leftFreq.mPosition > KTouchPosThreshold ) {
+// break;
+// }
+//
+// if ( leftFreq.mFavorite || leftFreq.mLocalStation ) {
+// foundFrequency = frequencyAtPos - delta;
+// break;
+// } else if ( rightFreq.mFavorite || rightFreq.mLocalStation ) {
+// foundFrequency = frequencyAtPos + delta;
+// break;
+// }
+// }
+//
+// if ( foundFrequency > 0 ) {
+// setFrequency( foundFrequency, 0 );
+// }
+// }
+
+ mButtonTimer->stop();
+ mButtonTimer->start();
+}
+
+/*!
+ *
+ */
+void RadioFrequencyStrip::initModel()
+{
+ const uint minFreq = uint( qreal(mMinFrequency) / KOneHertz + KRounder );
+ const uint maxFreq = uint( qreal(mMaxFrequency) / KOneHertz + 0.9 ); // always round up
+
+ QStringList list;
+ QString freqText;
+ for ( uint i = minFreq; i <= maxFreq; ++i ) {
+ freqText = QString::number( i );
+ list.append( freqText );
+ mFrequencyItems.append( new RadioFrequencyItem( freqText ) );
+ }
+ mFrequencyItems.append( new RadioFrequencyItem( "" ) );
+ list.append( "" );
+
+ mMaxWidth = list.count() * KWidth;
+
+ mSeparatorPos = qreal(KWidth) / 2;
+ const uint minDrawableFreq = minFreq * KOneHertz - KHalfHertz;;
+ const uint maxDrawableFreq = maxFreq * KOneHertz + KHalfHertz;
+ mSeparatorPos += qreal( ( mMinFrequency - minDrawableFreq ) / 2 ) / KPixelInHz;
+ mSeparatorPos -= qreal( ( maxDrawableFreq - mMaxFrequency ) / 2 ) / KPixelInHz;
+
+ setModel( new QStringListModel( list, this ) );
+}
+
+/*!
+ *
+ */
+void RadioFrequencyStrip::initSelector()
+{
+ QPixmap selectorPixmap = QPixmap( QSize( KSelectorWidth, KHeight ) );
+ selectorPixmap.fill( Qt::red );
+ mSelectorImage->setPixmap( selectorPixmap );
+ mSelectorImage->setZValue( KSelectorZPos );
+}
+
+/*!
+ *
+ */
+void RadioFrequencyStrip::initItems()
+{
+ LOG_METHOD;
+ foreach ( RadioFrequencyItem* item, mFrequencyItems ) {
+ updateFavorites( item );
+ }
+
+ if ( mEngine ) {
+ QList<RadioStation> stations = mEngine->stationsInRange( mMinFrequency, mMaxFrequency );
+ foreach ( const RadioStation& station, stations ) {
+ if ( station.isFavorite() ) {
+ mFrequencies[ station.frequency() ].mFavorite = true;
+ }
+ if ( station.isType( RadioStation::LocalStation ) ) {
+ mFrequencies[ station.frequency() ].mLocalStation = true;
+ }
+ }
+ }
+
+ int prevPos = 0;
+ int nextPos = 0;
+ const int lastPos = mFrequencies.value( mMaxFrequency ).mPosition;
+ for ( int i = mFrequencies.value( mMinFrequency ).mPosition; i < lastPos; ++i ) {
+ if ( mPositions.contains( i ) ) {
+ prevPos = i;
+ const uint freq = mPositions.value( prevPos ) + mFrequencyStepSize;
+ if ( mFrequencies.contains( freq ) ) {
+ nextPos = mFrequencies.value( freq ).mPosition;
+ } else {
+ nextPos = prevPos;
+ }
+ } else {
+ const int nearestHit = ( i - prevPos ) < ( nextPos - i ) ? prevPos : nextPos;
+ mPositions.insert( i, mPositions.value( nearestHit ) );
+ }
+ }
+}
+
+/*!
+ *
+ */
+void RadioFrequencyStrip::initButtons()
+{
+ mLeftButton->setZValue( KSelectorZPos );
+ mRightButton->setZValue( KSelectorZPos );
+
+ QEffectList effectList;
+ effectList.append( EffectInfo( mLeftButton, ":/effects/slide_to_left.fxml", KSlideToLeft ) );
+ effectList.append( EffectInfo( mLeftButton, ":/effects/slide_from_left.fxml", KSlideFromLeft ) );
+ effectList.append( EffectInfo( mRightButton, ":/effects/slide_to_right.fxml", KSlideToRight ) );
+ effectList.append( EffectInfo( mRightButton, ":/effects/slide_from_right.fxml", KSlideFromRight ) );
+ RadioUiUtilities::addEffects( effectList );
+}
+
+/*!
+ *
+ */
+void RadioFrequencyStrip::addFrequencyPos( int pos, uint frequency, RadioFrequencyItem* item )
+{
+ mFrequencies.insert( frequency, FrequencyPos( pos, false, false, item ) );
+ mPositions.insert( pos, frequency );
+}
+
+/*!
+ *
+ */
+void RadioFrequencyStrip::updateFavorites( RadioFrequencyItem* item )
+{
+ uint frequency = item->frequency();
+ QList<RadioStation> stations;
+ if ( mEngine ) {
+ stations = mEngine->stationsInRange( frequency - KHalfHertz, frequency + KHalfHertz );
+ }
+
+ QPixmap pixmap = drawPixmap( frequency, stations, item );
+ item->setPixmap( pixmap );
+
+ foreach ( const RadioStation& station, stations ) {
+ frequency = station.frequency();
+ FrequencyPos pos = mFrequencies.value( frequency );
+ pos.mFavorite = station.isFavorite();
+ pos.mLocalStation = station.isType( RadioStation::LocalStation );
+ mFrequencies.insert( frequency, pos );
+ }
+}
+
+/*!
+ *
+ */
+QPixmap RadioFrequencyStrip::drawPixmap( uint frequency, QList<RadioStation> stations, RadioFrequencyItem* item )
+{
+ QPixmap pixmap( KWidth, KHeight );
+ pixmap.fill( Qt::transparent );
+ QPainter painter( &pixmap );
+ QPen normalPen = painter.pen();
+ QPen favoritePen = normalPen;
+ normalPen.setColor( Qt::white );
+ painter.setPen( normalPen );
+
+ if ( frequency == 0 ) {
+ painter.drawLine( makeTab( mSeparatorPos - 1 + KRounder, KHeight ) );
+ painter.drawLine( makeTab( mSeparatorPos + KRounder, KHeight ) );
+ return pixmap;
+ }
+
+ const QString itemText = QString::number( frequency / KOneHertz );
+ const uint startFrequency = frequency - KHalfHertz;
+ const uint endFrequency = startFrequency + KOneHertz;
+ const uint roundedMin = int( qreal(mMinFrequency) / KOneHertz + KRounder );
+ const uint freq = frequency / KOneHertz;
+ const int diff = freq - roundedMin;
+ const qreal startPixel = diff * KWidth;
+ qreal pixels = 0.0;
+ QFont painterFont = painter.font();
+ painterFont.setPointSize( 6 );
+ painter.setFont( painterFont );
+
+ const int charWidth = painter.fontMetrics().averageCharWidth();
+ for ( uint frequency = startFrequency; frequency <= endFrequency; frequency += mFrequencyStepSize ) {
+
+ if ( frequency < mMinFrequency || frequency > mMaxFrequency ) {
+ continue;
+ }
+
+ pixels = qreal( frequency - startFrequency ) / KPixelInHz;
+ if ( frequency % KOneHertz == 0 ) {
+
+ // Draw the high frequency tab and the frequency text for the even number
+ painter.drawLine( makeTab( pixels, KTabHeightBig ) );
+ const int textPosX = pixels - itemText.length() * charWidth / 2;
+ painter.drawText( QPoint( textPosX, 20 ), itemText );
+
+ } else if ( frequency % KOneTabInHz == 0 ) {
+
+ // Draw the low frequency tab for the uneven number
+ painter.drawLine( makeTab( pixels, KTabHeightSmall ) );
+
+ }
+
+ addFrequencyPos( startPixel + pixels + KRounder, frequency, item );
+ }
+
+ // Draw favorites and local stations
+ favoritePen.setColor( Qt::yellow );
+
+ const int markerYPos = KHeight - 20;
+ foreach ( const RadioStation& station, stations ) {
+ const uint frequency = station.frequency();
+ pixels = qreal( frequency - startFrequency ) / KPixelInHz;
+
+ if ( station.isFavorite() ) {
+ favoritePen.setWidth( KTabWidthFavorite );
+ painter.setPen( favoritePen );
+ painter.drawEllipse( pixels - 3, markerYPos - 3, 6, 6 );
+// painter.drawPixmap( pixels - 10, 20, 20, 20, mFavoriteIcon.pixmap() );
+ } else if ( station.isType( RadioStation::LocalStation ) ) {
+// painter.setPen( normalPen );
+// painter.drawLine( pixels, // Start X
+// KHeight - KTabHeightFavorite, // Start Y
+// pixels, // End X
+// KHeight ); // End Y
+
+ favoritePen.setWidth( 1 );
+ painter.setPen( favoritePen );
+ painter.drawEllipse( pixels - 4, markerYPos - 4, 8, 8 );
+ }
+ }
+
+ return pixmap;
+}
+
+/*!
+ *
+ */
+void RadioFrequencyStrip::emitFrequencyChanged( uint frequency )
+{
+// LOG_FORMAT( "RadioFrequencyStrip::emitFrequencyChanged, frequency: %d", frequency );
+ if ( frequency > 0 && frequency != mFrequency ) {
+ mFrequency = frequency;
+ emit frequencyChanged( frequency, CommandSender::FrequencyStrip );
+ emitFavoriteSelected( mFrequencies.value( frequency ).mFavorite );
+ }
+}
+
+/*!
+ *
+ */
+void RadioFrequencyStrip::emitFavoriteSelected( bool favoriteSelected )
+{
+ if ( favoriteSelected != mFavoriteSelected ) {
+ mFavoriteSelected = favoriteSelected;
+ emit frequencyIsFavorite( mFavoriteSelected );
+ }
+}
+
+/*!
+ *
+ */
+int RadioFrequencyStrip::selectorPos() const
+{
+ const int pos = ( -contentWidget()->x() + mSelectorPos ) + KRounder;
+ return pos % mMaxWidth;
+}
+
+/*!
+ *
+ */
+void RadioFrequencyStrip::scrollToFrequency( uint frequency, int time )
+{
+ // Find the shortest route to the requested frequency.
+ const int pos = ( -contentWidget()->x() + mSelectorPos ) + KRounder;
+ if ( pos >= mMaxWidth - KWidth + mSeparatorPos ) {
+ const qreal newPos = qreal( mFrequencies.value( frequency ).mPosition ) - mSelectorPos + mMaxWidth;
+ scrollContentsTo( QPointF( newPos, 0 ), time );
+ } else {
+ scrollContentsTo( QPointF( qreal( mFrequencies.value( frequency ).mPosition ) - mSelectorPos, 0 ), time );
+ }
+}