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/*
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* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: Track List Widget for Music Player Media Wall.
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*
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*/
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#include <QGraphicsSceneMouseEvent>
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#ifndef UNIT_TESTING
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#include <hbinstance.h>
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#else
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#include "hbinstancestub.h"
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#endif
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#include <hblistview.h>
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#include <hbframeitem.h>
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#include <hbmainwindow.h>
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#include <hbstyleloader.h>
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#include <hbscrollbar.h>
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#include <hbcolorscheme.h>
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#include "mptracklistwidget.h"
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const int swipeAngleTolerance = 30; // angle is from 0 to 360
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const int tracklistOutlineSize = 1; //
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/*!
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\class MpTrackListWidget
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\brief Widget with a list of tracks for Media Wall.
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This widget provides a list with custom style and a background.
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*/
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/*!
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\fn void closed()
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This signal is emitted when the track list is closed by the user with a
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left swipe gesture.
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*/
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/*!
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Creates the MpTrackListWidget.
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*/
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MpTrackListWidget::MpTrackListWidget( QGraphicsItem *parent ) : HbWidget( parent )
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{
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setFlag( QGraphicsItem::ItemHasNoContents, false );
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// Register the custorm css path for the list items.
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HbStyleLoader::registerFilePath( ":/css/mpcustomlistitem.css" );
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HbStyleLoader::registerFilePath( ":/css/mpcustomlistitem.hblistviewitem.widgetml" );
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mList = new HbListView( this );
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// set layout name that matches the custom list item layout.
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mList->setLayoutName( "mpmwtracklist" );
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HbScrollBar *scrollbar = mList->verticalScrollBar();
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scrollbar->show();
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scrollbar->setInteractive( true );
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mList->setVerticalScrollBarPolicy( HbScrollArea::ScrollBarAlwaysOn );
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//grab the gesture for close.
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grabGesture(Qt::SwipeGesture);
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mFrameItem = new HbFrameItem( this );
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mFrameItem->frameDrawer().setFrameType( HbFrameDrawer::OnePiece );
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mFrameItem->frameDrawer().setFrameGraphicsName( "qtg_fr_popup_c" ); //replace for qtg_graf_mediawall_list_bg when available.
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mFrameItem->setFlag(QGraphicsItem::ItemStacksBehindParent);
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}
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/*!
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Destructs the track list widget.
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*/
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MpTrackListWidget::~MpTrackListWidget()
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{
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}
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/*!
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Returns the HbListView instance.
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*/
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HbListView *MpTrackListWidget::list()
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{
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return mList;
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}
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/*!
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\reimp
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*/
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void MpTrackListWidget::resizeEvent(QGraphicsSceneResizeEvent *event)
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{
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mFrameItem->setGeometry( rect() );
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qreal margin = tracklistOutlineSize;
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mList->setGeometry( rect().adjusted( margin, margin, -margin, -margin ) );
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HbWidget::resizeEvent( event );
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}
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/*!
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\reimp
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*/
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void MpTrackListWidget::mousePressEvent( QGraphicsSceneMouseEvent *event )
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{
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if ( event->button() == Qt::LeftButton ) {
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event->accept();
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}
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else {
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event->ignore();
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}
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}
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/*!
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\reimp
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*/
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void MpTrackListWidget::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
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{
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if ( event->button() == Qt::LeftButton ) {
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event->accept();
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}
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else {
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event->ignore();
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}
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}
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/*!
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\reimp
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*/
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void MpTrackListWidget::gestureEvent(QGestureEvent *event)
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{
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QGesture* gesture = event->gesture(Qt::SwipeGesture);
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if (gesture) {
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QSwipeGesture* swipe = static_cast<QSwipeGesture *>(gesture);
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if (swipe->state() == Qt::GestureFinished &&
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swipeAngleToDirection (swipe->swipeAngle()) == QSwipeGesture::Left ) {
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//Left gesture is the direction in wich the track list slides to close.
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emit closed();
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event->accept(Qt::SwipeGesture);
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}
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}
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}
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/*!
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\reimp
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*/
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void MpTrackListWidget::paint( QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget )
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{
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Q_UNUSED( widget )
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Q_UNUSED( option )
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painter->save();
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qreal outlineWidth(tracklistOutlineSize);
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painter->setPen(QPen(HbColorScheme::color("qtc_view_normal_secondary"), outlineWidth,Qt::SolidLine,Qt::FlatCap,Qt::MiterJoin));
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painter->drawRect( rect().adjusted(outlineWidth/2,outlineWidth/2,-outlineWidth/2,-outlineWidth/2) );
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painter->restore();
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}
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/*!
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Maps swipe \a angle to QSwipeGesture::SwipeDirection based on a tolerance
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parameter and orientation. This funtions helps to identify a swipe even
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if it is not sharp movement from 180 to 0 degrees on the righ swipe
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gesture for instance. Since gesture events are mesured on device
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cordinates this also helps to correct the gesture to local cordinates
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bases on device orientation, wich is done using QT transformations,
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meaning local cordinates and device cordinates are not always aligned.
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*/
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QSwipeGesture::SwipeDirection MpTrackListWidget::swipeAngleToDirection(
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int angle )
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{
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int delta = swipeAngleTolerance;
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if ( hbInstance->allMainWindows()[0]->orientation() == Qt::Horizontal ) {
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//correction for transformation on rotation.
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#ifdef __WINS__ //wincw with forced rotation is to the right.
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angle += ( angle < 90 ) ? 270 : -90;
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#else//currently hardware rotations is to the left.
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angle += 90;
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if ( angle > 360 ) {
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angle -= 360;
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}
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#endif
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}
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QSwipeGesture::SwipeDirection direction( QSwipeGesture::NoDirection );
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if ( ( angle > 90 - delta) && ( angle < 90 + delta ) ) {
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direction = QSwipeGesture::Up;
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} else if ( ( angle > 270 - delta ) && (angle < 270 + delta ) ) {
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direction = QSwipeGesture::Down;
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} else if ( ( ( angle >= 0 ) && ( angle < delta ) )
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|| ( ( angle > 360 - delta ) && ( angle <= 360 ) ) ) {
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direction = QSwipeGesture::Right;
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} else if ( ( angle > 180 - delta ) && ( angle < 180 + delta ) ) {
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direction = QSwipeGesture::Left;
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}
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return direction;
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}
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//EOF
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