clock/clockui/clockwidget/clockwidgetimpl/src/analogclockwidget.cpp
author hgs
Mon, 09 Aug 2010 18:30:52 +0530
changeset 57 bb2d3e476f29
parent 55 2c54b51f39c4
permissions -rw-r--r--
201031
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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:  AnalogClockWidget
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*
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*/
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// System includes
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#include <HbIconItem>
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#include <HbStyleLoader>
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#include <QTime>
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#include <QTimer>
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// User includes
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#include "analogclockwidget.h"
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#include "OstTraceDefinitions.h"
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#ifdef OST_TRACE_COMPILER_IN_USE
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#include "analogclockwidgetTraces.h"
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#endif
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// Constants
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const int clockUpdateInterval  (1000); // msec
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/*!
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    \class AnalogClockWidget
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    This class implements the analogclock widget which gets displayed
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    in the clockmainview when the clocktype is set to analog type.
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 */
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/*!
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    Constructor.
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    \param parent The parent of type QGraphicsItem.
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*/
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AnalogClockWidget::AnalogClockWidget(QGraphicsItem *parent) : 
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		HbWidget(parent)
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{
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	OstTraceFunctionEntry0( ANALOGCLOCKWIDGET_ANALOGCLOCKWIDGET_ENTRY );
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	bool result = HbStyleLoader::registerFilePath(
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			":/resource/analogclockwidget.widgetml");
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	result = HbStyleLoader::registerFilePath(
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			":/resource/analogclockwidget.css");
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	constructPrimitives();
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	mTimer = new QTimer(this);
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	connect(mTimer, SIGNAL(timeout()), SLOT(tick()));
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OstTraceFunctionExit0( ANALOGCLOCKWIDGET_ANALOGCLOCKWIDGET_EXIT );
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}
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/*!
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    Destructor.
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 */
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AnalogClockWidget::~AnalogClockWidget()
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{
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	OstTraceFunctionEntry0( DUP1_ANALOGCLOCKWIDGET_ANALOGCLOCKWIDGET_ENTRY );
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	mTimer->stop(); 
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	HbStyleLoader::unregisterFilePath(":/resource/analogclockwidget.widgetml");
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	HbStyleLoader::unregisterFilePath(":/resource/analogclockwidget.css");
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OstTraceFunctionExit0( DUP1_ANALOGCLOCKWIDGET_ANALOGCLOCKWIDGET_EXIT );
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}
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/*!
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	Constructs the widget primitive items.
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 */
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void AnalogClockWidget::constructPrimitives()
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{
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	OstTraceFunctionEntry0( ANALOGCLOCKWIDGET_CONSTRUCTPRIMITIVES_ENTRY );
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	if (!mClockBackground) {
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		mClockBackground = new HbIconItem(
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				QLatin1String("qtg_graf_clock_day_bg"), this);
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		HbStyle::setItemName(
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				mClockBackground, QLatin1String("clock_background"));
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	}
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	if (!mClockHourHand) {
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		mClockHourHand = new HbIconItem(
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				QLatin1String("qtg_graf_clock_day_hour"), this);
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		HbStyle::setItemName(
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				mClockHourHand, QLatin1String("clock_hour_hand"));
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	}
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	if (!mClockMinuteHand) {
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		mClockMinuteHand = new HbIconItem(
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				QLatin1String("qtg_graf_clock_day_min"), this);
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		HbStyle::setItemName(
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				mClockMinuteHand, QLatin1String("clock_minute_hand"));
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	}
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	if (!mClockSecondHand) {
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		mClockSecondHand = new HbIconItem(
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				QLatin1String("qtg_graf_clock_day_sec"), this);
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		HbStyle::setItemName(
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				mClockSecondHand, QLatin1String("clock_second_hand"));
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	}
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OstTraceFunctionExit0( ANALOGCLOCKWIDGET_CONSTRUCTPRIMITIVES_EXIT );
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}
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/*!
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	Called on the derived classes to notify in cases when 
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	the style primitives need to be updated.
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 */
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void AnalogClockWidget::updatePrimitives()
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{
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	OstTraceFunctionEntry0( ANALOGCLOCKWIDGET_UPDATEPRIMITIVES_ENTRY );
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	if (!mClockBackground) {
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		mClockBackground = new HbIconItem(
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				QLatin1String("qtg_graf_clock_day_bg"), this);
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		HbStyle::setItemName(
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				mClockBackground, QLatin1String("clock_background"));
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	}
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	if (!mClockHourHand) {
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		mClockHourHand = new HbIconItem(
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				QLatin1String("qtg_graf_clock_day_hour"), this);
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		HbStyle::setItemName(
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				mClockHourHand, QLatin1String("clock_hour_hand"));
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	}
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	if (!mClockMinuteHand) {
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		mClockMinuteHand = new HbIconItem(
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				QLatin1String("qtg_graf_clock_day_min"), this);
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		HbStyle::setItemName(
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				mClockMinuteHand, QLatin1String("clock_minute_hand"));
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	}
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	if (!mClockSecondHand) {
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		mClockSecondHand = new HbIconItem(
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				QLatin1String("qtg_graf_clock_day_sec"), this);
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		HbStyle::setItemName(
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				mClockSecondHand, QLatin1String("clock_second_hand"));
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	}
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	QRectF hourHandGeometry = mClockHourHand->geometry();
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	QRectF minHandGeometry = mClockMinuteHand->geometry();
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	QRectF secHandGeometry = mClockSecondHand->geometry();
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	if ((hourHandGeometry.width() && hourHandGeometry.height()) &&
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			(minHandGeometry.width() && minHandGeometry.height()) &&
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			(secHandGeometry.width() && secHandGeometry.height())) {
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		// Calculate angles for clock hands.
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		QTime curTime = QTime::currentTime();
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		qreal seconds = 6 * curTime.second();
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		qreal minutes = 6 * (curTime.minute() + seconds / 360);
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		qreal hours = 30 * ((curTime.hour() % 12) + minutes / 360);
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		int x = hourHandGeometry.width()/2;
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		int y = hourHandGeometry.height()/2;
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		mClockHourHand->setTransform(
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				QTransform().translate(x, y).rotate(hours).translate(-x, -y));
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		x = minHandGeometry.width()/2;
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		y = minHandGeometry.height()/2;
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		mClockMinuteHand->setTransform(
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				QTransform().translate(x, y).rotate(minutes).translate(-x, -y));
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		x = secHandGeometry.width()/2;
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		y = secHandGeometry.height()/2;
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		mClockSecondHand->setTransform(
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				QTransform().translate(x, y).rotate(seconds).translate(-x, -y));
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	}
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	if (!mTimer->isActive()) {
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		mTimer->start(clockUpdateInterval);
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	}
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OstTraceFunctionExit0( ANALOGCLOCKWIDGET_UPDATEPRIMITIVES_EXIT );
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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 AnalogClockWidget::tick()
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{
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	OstTraceFunctionEntry0( ANALOGCLOCKWIDGET_TICK_ENTRY );
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	updatePrimitives();
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	update();
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OstTraceFunctionExit0( ANALOGCLOCKWIDGET_TICK_EXIT );
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}
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/*!
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	Sets the item's geometry to rect.
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 */
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void AnalogClockWidget::setGeometry(const QRectF &rect)
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{
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	OstTraceFunctionEntry0( ANALOGCLOCKWIDGET_SETGEOMETRY_ENTRY );
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	HbWidget::setGeometry(rect);
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	updatePrimitives();
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OstTraceFunctionExit0( ANALOGCLOCKWIDGET_SETGEOMETRY_EXIT );
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}
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// End of file  --Don't remove this.