author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 17 Sep 2010 08:27:54 +0300 | |
changeset 92 | 6727c5d0afc7 |
parent 77 | 4b195f3bea29 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2009 - 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: Base class for all screensavers. |
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* |
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*/ |
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#include "screensaver.h" |
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#include "screensaver_p.h" |
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/*! |
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\enum ScreensaverState |
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Lists states that the Screensaver can be in. |
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*/ |
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/* |
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\var ScreensaverState ScreensaverStateConstructed |
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Screensaver is in this state right after construction. |
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*/ |
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|
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/* |
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\var ScreensaverState ScreensaverStateInitialized |
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|
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All Screensaver resources are initialized. |
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Screensaver is set to Initialized state after a call to initialize |
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(if previously Constructed or Closed) method. |
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*/ |
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|
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/* |
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\var Screensaver ScreensaverStateBackground |
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Screensaver is in background, its operations are suspended. |
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Screensaver is set to Background after a call to background method. |
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*/ |
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|
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/* |
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\var Screensaver ScreensaverStateForeground |
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Screensaver is in foreground and fully operational, showing the main visualization. |
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Screensaver is set to Foreground after a call to foreground method. |
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*/ |
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|
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/* |
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\var Screensaver ScreensaverStatePartialForeground |
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Screensaver has limited foreground (in OLED display cases). |
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Screensaver is set to PartialForeground after a call to partialForeground method. |
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*/ |
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|
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/* |
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\var Screensaver ScreensaverStatePowerSave |
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Device is in power save mode. Screensaver should limit all processing. |
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Screensaver is set to PowerSave after a call to powerSave method. |
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*/ |
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/* |
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\var Screensaver ScreensaverStateClosed |
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Screensaver is closed. All resources should be frees. |
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Screensaver is set to Closed after a call to close method. |
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*/ |
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/*! |
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\class Screensaver |
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\brief Base class for all screensavers. |
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Screensaver plug-ins provide the visualizations for different screensaver application states. |
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A Screensaver is notified about state changes and in consequence it should emit a signal |
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viewChanged() carrying a QGraphicsWidget which will be set as the current view. |
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The application takse care about tracing device status so the Screensaver should be only |
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concerned about the GUI. |
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*/ |
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/*! |
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Constructs a new Screensaver with \a parent. |
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*/ |
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Screensaver::Screensaver(QObject *parent) : |
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QObject(parent), m_d(new ScreensaverPrivate(this)) |
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{ |
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} |
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|
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/*! |
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Destructs the class. |
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*/ |
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Screensaver::~Screensaver() |
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{ |
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delete m_d; |
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} |
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/*! |
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\fn void Screensaver::faulted() |
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This signal is emitted if a fault occurs when changing Screensaver's state. |
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*/ |
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/*! |
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\fn void Screensaver::viewChanged(QGraphicsWidget *widget) |
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This signal should be emitted when the Screensaver needs to change its visualization |
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after a state change. |
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\param widget The graphics widget container holding the current visualization. |
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*/ |
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/*! |
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\fn void Screensaver::unlockRequested() |
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This signal is emitted if screensaver wants the device to be unlocked. |
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*/ |
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/*! |
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\fn void Screensaver::activeAreaMoved() |
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This signal is emitted when active area of power-save mode screensaver has moved. |
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*/ |
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/*! |
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Returns the state that the Screensaver is currently in. |
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\return The current state. |
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*/ |
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ScreensaverState Screensaver::currentState() |
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{ |
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return m_d->currentState(); |
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} |
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/*! |
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\fn virtual Screensaver::ScreenPowerMode currentPowerMode() = 0 |
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Inherited screensavers must implement this function to return the |
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display power mode to be used in the current state. |
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*/ |
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/*! |
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\fn virtual void getActiveScreenRows(int *firstActiveRow, int *lastActiveRow) = 0 |
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Inherited screensavers must implement this function to return the rows where |
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the screensaver wants to draw graphics. This is called when screen is set to the |
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power save mode. The values returned do not matter in case the screensaver doesn't |
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ask for power save mode. |
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Note that the returned rows should reflect the rows in the natural orientation |
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of the screen device. That is, if default orientation of the screen is portrait, |
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then the return value in landscape mode must reflect the columns between which |
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the graphics are drawn. |
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*/ |
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/*! |
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\fn virtual void updateLayout() = 0 |
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Inherited screensavers must implement this function to reload the screen layout |
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for the current screen orientation. |
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*/ |
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|
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/*! |
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Initializes the Screensaver |
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*/ |
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void Screensaver::initialize() |
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{ |
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m_d->initialize(); |
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} |
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|
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/*! |
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Called when the application is in foreground. |
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*/ |
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void Screensaver::foreground() |
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{ |
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m_d->foreground(); |
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} |
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|
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/*! |
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Called when the application gains limited foreground as with OLED display cases. |
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*/ |
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void Screensaver::partialForeground() |
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{ |
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m_d->partialForeground(); |
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} |
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|
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/*! |
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Called when the application goes to background. |
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*/ |
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void Screensaver::background() |
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{ |
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m_d->background(); |
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} |
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|
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/*! |
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Called when device enters power save mode. |
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*/ |
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void Screensaver::powerSave() |
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{ |
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m_d->powerSave(); |
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} |
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|
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/*! |
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Stops Screensaver's processing. |
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*/ |
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void Screensaver::close() |
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{ |
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m_d->close(); |
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} |
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|
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/*! |
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If there is any active universal indicator when screensaver |
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is launched, then this method is called. |
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Note that indicators are implemented only for Symbian/S60 OS. |
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\param activeIndicators List of currently active indicators in |
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the chronological order according to their arrival time. |
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*/ |
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void Screensaver::handleActiveIndicators( |
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const QList<HbIndicatorInterface*> &activeIndicators) |
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{ |
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// TODO: need to go through private class? |
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m_d->handleActiveIndicators(activeIndicators); |
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} |
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|
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/*! |
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Called when some universal indicator is activated. |
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\param activatedIndicator Activated indicator. Ownership is not transferred. |
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*/ |
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void Screensaver::handleActivatedIndicator( |
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HbIndicatorInterface* activatedIndicator) |
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{ |
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m_d->handleActivatedIndicator(activatedIndicator); |
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} |
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|
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/*! |
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Called when some universal indicator is deactivated. |
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\param activatedIndicator Deactivated indicator. Ownership is not transferred. |
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*/ |
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void Screensaver::handleDeactivatedIndicator( |
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HbIndicatorInterface* deactivatedIndicator) |
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{ |
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m_d->handleDeactivatedIndicator(deactivatedIndicator); |
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} |
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|
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|
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/*! |
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\fn virtual bool Screensaver::onForeground() = 0 |
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|
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After a call the Screensaver should emit the foreground state visualization. |
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Returns true if the operation secceeded, otherwise false - in this case |
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the faulted() signal will be emitted by the base class. |
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\return Indicates if the operation succeeded. |
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*/ |
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|
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/*! |
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\fn virtual bool Screensaver::onPartialForeground() = 0 |
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|
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After a call the Screensaver should emit the partial foreground state visualization. |
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This is valid for OLED display cases when the screensaver is displayed at all times |
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with limited functionality. |
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Returns true if the operation secceeded, otherwise false - in this case |
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the faulted() signal will be emitted by the base class. |
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\return Indicates if the operation succeeded. |
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*/ |
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|
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/*! |
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\fn virtual bool Screensaver::onBackground() = 0 |
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|
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After a call the Screensaver should limit its processing. |
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Returns true if the operation secceeded, otherwise false - in this case |
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the faulted() signal will be emitted by the base class. |
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\return Indicates if the operation succeeded. |
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*/ |
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|
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/*! |
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\fn virtual bool Screensaver::onPowerSave() = 0 |
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|
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After a call the Screensaver should limit its processing as much as possible. |
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Returns true if the operation secceeded, otherwise false - in this case |
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the faulted() signal will be emitted by the base class. |
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\return Indicates if the operation succeeded. |
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*/ |
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|
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/*! |
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After a call it should initialize the Screensaver. |
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Returns true if the operation secceeded, otherwise false - in this case |
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the faulted() signal will be emitted by the base class. |
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The default implementation does nothing and always returns true. |
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\return Indicates if the operation succeeded. |
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*/ |
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bool Screensaver::onInitialize() |
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{ |
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return true; |
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} |
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|
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/*! |
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After a call it should close the Screensaver. |
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The Screensaver should also free all resources. |
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Returns true if the operation secceeded, otherwise false - in this case |
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the faulted() signal will be emitted by the base class. |
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The default implementation does nothing and always returns true. |
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\return Indicates if the operation succeeded. |
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*/ |
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bool Screensaver::onClose() |
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{ |
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return true; |
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} |
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|
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/*! |
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The default implementation is empty. |
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*/ |
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void Screensaver::onHandleActiveIndicators( |
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const QList<HbIndicatorInterface*> &activeIndicators) |
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{ |
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Q_UNUSED(activeIndicators); |
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} |
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/*! |
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The default implementation is empty. |
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*/ |
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void Screensaver::onHandleActivatedIndicator( |
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HbIndicatorInterface *activatedIndicator) |
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{ |
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Q_UNUSED(activatedIndicator); |
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} |
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/*! |
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The default implementation is empty. |
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*/ |
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void Screensaver::onHandleDeactivatedIndicator( |
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HbIndicatorInterface *deactivatedIndicator) |
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{ |
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Q_UNUSED(deactivatedIndicator); |
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} |
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