camerauis/cameraxui/cxui/src/cxuistandby.cpp
author hgs
Thu, 15 Jul 2010 01:49:11 +0300
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permissions -rw-r--r--
201023
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/*
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* Copyright (c) 2009 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:
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*
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*/
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#include <QTimer>
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#include <QApplication>
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#include <QGraphicsSceneEvent>
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#include <hblabel.h>
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#include <hbdialog.h>
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#include <hbinstantfeedback.h>
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#include <QGraphicsRectItem>
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#include <QColor>
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#include "cxutils.h"
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#include "cxeengine.h"
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#include "cxuienums.h"
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#include "cxuistandby.h"
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#include "cxuidocumentloader.h"
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#include "cxeviewfindercontrol.h"
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#include "cxuicapturekeyhandler.h"
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#include "cxestillcapturecontrol.h"
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#include "cxevideocapturecontrol.h"
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/*!
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 * Constructor
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 */
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CxuiStandby::CxuiStandby(CxuiCaptureKeyHandler &keyHandler,CxuiDocumentLoader *documentLoader, CxeEngine *engine)
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: mKeyHandler(keyHandler),
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  mDocumentLoader(documentLoader),
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  mEngine(engine),
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  mStandbyPopup(NULL),
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  mStandbyDialogVisible(false),
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  mAllowDismiss(true)
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    CX_ASSERT_ALWAYS(engine);
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    // initialize standby timer
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    mStandbyTimer = new QTimer(this);
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    // install event filter for application wide events
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    QCoreApplication::instance()->installEventFilter(this);
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    CX_ASSERT_ALWAYS(mStandbyTimer);
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    connect(mStandbyTimer, SIGNAL(timeout()), this, SLOT(enterStandby()));
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    mStandbyTimer->setSingleShot(true);
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*!
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 * Destructor
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 */
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CxuiStandby::~CxuiStandby()
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{
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    CX_DEBUG_IN_FUNCTION();
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    // remove the event filter
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    QCoreApplication::instance()->removeEventFilter(this);
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    // stop standby timer
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    stopTimer();
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}
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/*!
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* Allow dismissing standby mode with AF or capture key?
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* @param allow Is dismissing allowed.
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*/
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void CxuiStandby::allowDismiss(bool allow)
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    mAllowDismiss = allow;
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    if (allow) {
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        if (mStandbyDialogVisible) {
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            // Reconnect the close signals if dialog is visible
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            connect(&mKeyHandler, SIGNAL(autofocusKeyPressed()), mStandbyPopup, SLOT(close()), Qt::UniqueConnection);
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            connect(&mKeyHandler, SIGNAL(captureKeyPressed()),   mStandbyPopup, SLOT(close()), Qt::UniqueConnection);
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        }
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    } else {
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        disconnect(&mKeyHandler, SIGNAL(autofocusKeyPressed()), mStandbyPopup, SLOT(close()));
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        disconnect(&mKeyHandler, SIGNAL(captureKeyPressed()),   mStandbyPopup, SLOT(close()));
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    }
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*!
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* Is standby mode active?
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* @return True, if standby mode is active, false if not.
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*/
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bool CxuiStandby::isActive() const
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{
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    return mStandbyDialogVisible;
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}
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/*!
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 * stops standby timer
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 */
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void CxuiStandby::stopTimer()
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{
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    if(mStandbyTimer) {
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        mStandbyTimer->stop();
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    }
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}
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/*!
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 * starts standby timer
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 */
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void CxuiStandby::startTimer()
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{
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    if(mStandbyTimer) {
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        mStandbyTimer->start(CXUI_STANDBY_CAMERA_TIMEOUT);
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    }
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}
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/*!
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 * Handles mouse press events
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 * returns if mouse key press is consumed.
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 * \param event event to be handled
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 * \return boolean to indicate whether the event was handled or not
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 */
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bool CxuiStandby::handleMouseEvent(QEvent *event)
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{
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    bool keyHandled = false;
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    // close the dialog if it's visible
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    if (mStandbyDialogVisible && mStandbyPopup) {
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        HbInstantFeedback feedback(HbFeedback::BasicItem);
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        switch (event->type()) {
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            case QEvent::GraphicsSceneMousePress:
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                feedback.play();
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                break;
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            case QEvent::GraphicsSceneMouseRelease:
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                if (mAllowDismiss) {
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                    CX_DEBUG(( "closing the popup mStandbyDialogVisible = : %d", mStandbyDialogVisible ));
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                    // todo: sound disabling doesn't work in orbit yet so don't do feedback on release
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                    // needs to be enabled when orbit support is done
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                    //feedback.setModalities(HbFeedback::Tactile);
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                    //feedback.play();
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   157
                    exitStandby();
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   158
                }
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   159
                break;
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   160
            default:
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   161
                break;
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   162
        }
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   163
        // eat all mouse events when standby is active
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        keyHandled = true;
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   165
    } else if (mStandbyTimer && mStandbyTimer->isActive()) {
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   166
        // restart the timer only if it's running
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        startTimer();
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   168
    }
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   169
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    return keyHandled;
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   171
}
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   172
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/*!
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   175
 * switching to standby.
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   176
 */
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   177
void CxuiStandby::enterStandby()
19
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{
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    CX_DEBUG_ENTER_FUNCTION();
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   180
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   181
    if (proceedToStandy()) {
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   182
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        // signal for ui classes to prepare for standby
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        emit aboutToEnterStandby();
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   185
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        mStandbyDialogVisible = true;
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   187
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   188
        if (mStandbyPopup == NULL) {
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   189
            CX_DEBUG(("Loading standby DocML"));
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   190
            bool ok = false;
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   191
            // Use document loader to create popup
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   192
            mDocumentLoader->load(CxUiLayout::STANDBY_POPUP_XML, &ok);
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   193
            CX_DEBUG(("standby load ok=%d", ok));
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   194
            mStandbyPopup = qobject_cast<HbDialog*>(mDocumentLoader->findWidget(CxUiLayout::STANDBY_POPUP));
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   195
            CX_ASSERT_ALWAYS(mStandbyPopup);
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   196
            mStandbyPopup->setTimeout(HbDialog::NoTimeout);
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   197
            mStandbyPopup->setBackgroundFaded(false);
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   198
            mStandbyPopup->setPreferredPos(QPointF(0,0));
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   199
            // color of standby text is set in the code. It cannot be done in docml
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   200
            HbLabel* label = qobject_cast<HbLabel*>(mDocumentLoader->findWidget(CxUiLayout::STANDBY_TEXT_WIDGET));
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   201
            label->setTextColor(Qt::white);
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   202
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   203
            // connecting "abouttoclose" signal to dismissStandby
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   204
            connect(mStandbyPopup, SIGNAL(aboutToClose()), this, SLOT(dismissStandby()));
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   205
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   206
            // HbDialog's default background item is replaced with black rectangle
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   207
            QGraphicsRectItem *backgroundItem = new QGraphicsRectItem();
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   208
            QBrush blackBrush = QBrush(Qt::black);
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   209
            backgroundItem->setBrush(blackBrush);
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   210
            QGraphicsItem *origBgItem = mStandbyPopup->backgroundItem();
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   211
            backgroundItem->setRect(origBgItem->boundingRect());
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   212
            mStandbyPopup->setBackgroundItem(backgroundItem);
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   213
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   214
        }
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   215
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   216
        CX_ASSERT_ALWAYS(mStandbyPopup);
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   217
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        mStandbyPopup->show();
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   219
        // connecting half press or full press key signal to dismiss standby
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        connect(&mKeyHandler, SIGNAL(autofocusKeyPressed()), mStandbyPopup, SLOT(close()), Qt::UniqueConnection);
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   221
        connect(&mKeyHandler, SIGNAL(captureKeyPressed()),   mStandbyPopup, SLOT(close()), Qt::UniqueConnection);
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   222
    }
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   223
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   224
    CX_DEBUG_EXIT_FUNCTION();
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   225
}
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   226
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   227
/*!
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   228
* Close the standby dialog.
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   229
*/
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   230
void CxuiStandby::exitStandby()
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   231
{
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   232
    CX_DEBUG_ENTER_FUNCTION();
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   233
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   234
    if (mAllowDismiss && mStandbyDialogVisible && mStandbyPopup) {
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        mStandbyPopup->close();
19
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   236
    }
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   237
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   238
    CX_DEBUG_EXIT_FUNCTION();
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   239
}
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   240
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   241
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   242
/*!
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   243
 * dismisses standby
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   244
 */
19
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   245
void CxuiStandby::dismissStandby()
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   246
{
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   247
    CX_DEBUG_ENTER_FUNCTION();
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   248
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   249
    if(mStandbyDialogVisible) {
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   250
        // stop the standby timer and close the pop-up
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   251
        mStandbyDialogVisible = false;
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   252
        //restart timer
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   253
        startTimer();
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   254
        // signal for ui classes to prepare for standby exit
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   255
        emit aboutToExitStandby();
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   256
    }
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   257
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   258
    CX_DEBUG_EXIT_FUNCTION();
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   259
}
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   260
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   261
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   262
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   263
/*!
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   264
 * checks if we can switch to standby
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   265
 */
19
d9aefe59d544 Revision: 201011
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   266
bool CxuiStandby::proceedToStandy()
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   267
{
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   268
    CX_DEBUG_ENTER_FUNCTION();
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   269
    CX_ASSERT_ALWAYS(mEngine);
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   270
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   271
    bool ok = false;
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   272
    if (!mStandbyDialogVisible) {
19
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   273
        CX_DEBUG(("show standby dialog"));
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   274
        ok = true;
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   275
    }
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   276
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   277
    CX_DEBUG(( "CxuiStandby::proceedToStandy proceedToStandy: %d", ok ));
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   278
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   279
    return ok;
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   280
}
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   281
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   282
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   283
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   284
/*!
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   285
 *  Event filter which filters application wide mouse events.
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   286
 */
19
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   287
bool CxuiStandby::eventFilter(QObject *object, QEvent *event)
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   288
{
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    Q_UNUSED(object);
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   290
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   291
    bool eventWasConsumed = false;
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   292
    switch (event->type()) {
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   293
        case QEvent::GraphicsSceneMouseMove:
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   294
        case QEvent::GraphicsSceneMousePress:
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   295
        case QEvent::GraphicsSceneMouseRelease:
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diff changeset
   296
            eventWasConsumed = handleMouseEvent(event);
19
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parents:
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   297
            break;
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parents:
diff changeset
   298
        default:
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   299
            break;
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parents:
diff changeset
   300
    }
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parents:
diff changeset
   301
    return eventWasConsumed;
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parents:
diff changeset
   302
}
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   303
d9aefe59d544 Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   304
// end of file