homescreenapp/widgetplugins/hsclockwidgetplugin/src/hsanalogclockwidget.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 27 May 2010 12:46:08 +0300
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child 62 341166945d65
permissions -rw-r--r--
Revision: 201019 Kit: 2010121
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/*
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* Copyright (c) 2008 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:  Analog clock widget
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*
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*/
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#include <QGraphicsSceneMouseEvent>
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#include <QTime>
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#include <HbStyleLoader>
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#include <HbIconItem>
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#include <HbTouchArea>
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#include <HbInstantFeedback>
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#include "hsconfiguration.h"
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#include "hsanalogclockwidget.h"
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/*!
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    \class HsAnalogClockWidget
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    \ingroup group_hsclockwidgetplugin
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    \brief Homescreen themable analog clock widget.
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*/
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/*!
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    Constructs widget.
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*/
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HsAnalogClockWidget::HsAnalogClockWidget(QGraphicsItem *parent)
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    : HbWidget(parent),
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      mBackground(0), mHourHand(0), mMinuteHand(0), 
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      mSecondHand(0), mTouchArea(0)
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{
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    HbStyleLoader::registerFilePath(":/hsanalogclockwidget.widgetml");
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    HbStyleLoader::registerFilePath(":/hsanalogclockwidget.css");
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    createPrimitives();
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}
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/*!
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    Destructor.
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*/
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HsAnalogClockWidget::~HsAnalogClockWidget()
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{
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    HbStyleLoader::unregisterFilePath(":/hsanalogclockwidget.widgetml");
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    HbStyleLoader::unregisterFilePath(":/hsanalogclockwidget.css");
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    mTouchArea->removeEventFilter(this);
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}
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/*!
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    Filters touch area events.
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*/
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bool HsAnalogClockWidget::eventFilter(QObject *watched, QEvent *event)
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{
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    Q_UNUSED(watched)
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    switch (event->type()) {
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        case QEvent::GraphicsSceneMousePress:
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            return true;
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        case QEvent::GraphicsSceneMouseRelease:
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            handleMouseReleaseEvent(static_cast<QGraphicsSceneMouseEvent *>(event));
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            return true;
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        default:
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            break;
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    }
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    return false;
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}
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/*!
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    Updates clock visualization according to current time
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 */
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void HsAnalogClockWidget::tick()
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{
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    updatePrimitives();
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}
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/*!
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    @copydoc HbWidget::resizeEvent()
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 */
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void HsAnalogClockWidget::resizeEvent(QGraphicsSceneResizeEvent *event)
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{
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    HbWidget::resizeEvent(event);
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    updatePrimitives();   
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}
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/*!
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    Creates all widget primitives.
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 */
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void HsAnalogClockWidget::createPrimitives()
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{
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    mBackground = new HbIconItem(QLatin1String("qtg_graf_clock_day_bg"), this);
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    HbStyle::setItemName(mBackground, QLatin1String("background"));
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    mHourHand = new HbIconItem(QLatin1String("qtg_graf_clock_day_hour"), this);
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    HbStyle::setItemName(mHourHand, QLatin1String("hour_hand"));
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    mMinuteHand = new HbIconItem(QLatin1String("qtg_graf_clock_day_min"), this);
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    HbStyle::setItemName(mMinuteHand, QLatin1String("minute_hand"));
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    mSecondHand = new HbIconItem(QLatin1String("qtg_graf_clock_day_sec"), this);
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    HbStyle::setItemName(mSecondHand, QLatin1String("second_hand"));
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    mTouchArea = new HbTouchArea(this);
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    mTouchArea->installEventFilter(this);    
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    HbStyle::setItemName(mTouchArea, QLatin1String("toucharea"));
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}
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/*!
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    @copydoc HbWidget::updatePrimitives()
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 */
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void HsAnalogClockWidget::updatePrimitives()
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{
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    // Calculate angles for clock hands.
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    QTime time = QTime::currentTime();
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    qreal s = 6 * time.second();
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    qreal m = 6 * (time.minute() + s/360);
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    qreal h = 30 * ((time.hour() % 12) + m/360);
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    int x = mBackground->iconItemSize().width()/2;
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    int y = mBackground->iconItemSize().height()/2;
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    QPointF originPoint = QPointF(x, y);
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    mHourHand->setTransformOriginPoint(originPoint);
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    mHourHand->setRotation(h);
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    mMinuteHand->setTransformOriginPoint(originPoint);
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    mMinuteHand->setRotation(m);
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    mSecondHand->setTransformOriginPoint(originPoint);
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    mSecondHand->setRotation(s);
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}
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/*!
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    \internal
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*/
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void HsAnalogClockWidget::handleMouseReleaseEvent(QGraphicsSceneMouseEvent *event)
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{
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    if (!contains(event->pos())) {
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        return;
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    }
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    HbInstantFeedback::play(HsConfiguration::clockWidgetTapFeedbackType());
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    emit clockTapped();
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}