/*

* Copyright (c) 2009-2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

#include <hbpushbutton.h>

#include <hblabel.h>

#include <hbtoolbar.h>

#include <hbaction.h>

#include <hbmainwindow.h>

#include <hbtransparentwindow.h>

#include <QVariant>

#include <QMetaType>

#include <hbslider.h>

#include <hblistwidget.h>

#include <hbdialog.h>

#include <hblistwidgetitem.h>

#include <hbtoolbarextension.h>

#include <hbtoolbutton.h>

#include <hbdeviceprofile.h> // HbDeviceProfile

#include <hbmenu.h>

#include <hbicon.h>

#include "cxuiselftimer.h"

#include "cxeengine.h"

#include "cxeviewfindercontrol.h"

#include "cxecameradevicecontrol.h"

#include "cxestillcapturecontrol.h"

#include "cxeautofocuscontrol.h"

#include "cxuicapturekeyhandler.h"

#include "cxutils.h"

#include "cxenamespace.h" // CxeSettingIds

#include "cxuienums.h"

#include "cxesettings.h"

#include "cxefeaturemanager.h" // mEngine->featureManager()

#include "cxuidocumentloader.h"

#include "OstTraceDefinitions.h"

#ifdef OST_TRACE_COMPILER_IN_USE

#include "cxuistillprecaptureviewTraces.h"

#endif

#include "cxuistillprecaptureview.h"

#include "cxuiserviceprovider.h"

#include "cxuisettingdialog.h"

#include "cxuisettingradiobuttonlist.h"

#include "cxuizoomslider.h"

using namespace Cxe;

using namespace CxUiLayout;

using namespace CxUiInternal;

const int CXUI_CAPTURE_PENDING_TIMEOUT = 5000; // 5 seconds

const int CXUI_IMAGES_LEFT_LIMIT = 99; // images left is shown only if below this limit

CxuiStillPrecaptureView::CxuiStillPrecaptureView( QGraphicsItem *parent) :

    CxuiPrecaptureView(parent),

    mSelfTimer(NULL),

    mFlashSetting(NULL),

    mStillSettingsPopup(NULL),

    mSceneModePopup(NULL),

    mCapturePending(false),

    mImagesLeft(NULL),

    mImagesLeftContainer(NULL),

    mPendingAfCanceling(false)

{

    CX_DEBUG_IN_FUNCTION();

}

CxuiStillPrecaptureView::~CxuiStillPrecaptureView()

{

    CX_DEBUG_IN_FUNCTION();

    delete mSelfTimer;

}

void CxuiStillPrecaptureView::construct(HbMainWindow *mainwindow, CxeEngine *engine,

                                        CxuiDocumentLoader *documentLoader,

                                        CxuiCaptureKeyHandler *keyHandler)

{

    CX_DEBUG_ENTER_FUNCTION();

    OstTrace0( camerax_performance, CXUISTILLPRECAPTUREVIEW_CONSTRUCT, "msg: e_CX_STILLPRECAPVIEW_CONSTRUCT 1" );

    // constuct base class

    CxuiPrecaptureView::construct(mainwindow, engine, documentLoader, keyHandler);

    connect(&mEngine->autoFocusControl(), SIGNAL(stateChanged(CxeAutoFocusControl::State,CxeError::Id)),

            this, SLOT(handleAutoFocusStateChanged(CxeAutoFocusControl::State,CxeError::Id)));

    connect(&mEngine->stillCaptureControl(), SIGNAL(snapshotReady(CxeError::Id, const QPixmap&, int)),

            this, SLOT(handleSnapshot(CxeError::Id)));

    connect(&mEngine->stillCaptureControl(), SIGNAL(stateChanged(CxeStillCaptureControl::State, CxeError::Id)),

            this, SLOT(handleStillCaptureStateChanged(CxeStillCaptureControl::State, CxeError::Id)));

    connect(&mEngine->viewfinderControl(), SIGNAL(stateChanged(CxeViewfinderControl::State, CxeError::Id)),

            this, SLOT(handleViewfinderStateChanged(CxeViewfinderControl::State, CxeError::Id)));

    connect(&(mEngine->settings()), SIGNAL(sceneChanged(CxeScene&)),

            this, SLOT(handleSceneChanged(CxeScene&)));

    connect(&mEngine->stillCaptureControl(), SIGNAL(availableImagesChanged()),

            this, SLOT(updateImagesLeftLabel()));

    loadDefaultWidgets();

    hideControls();

    mSelfTimer = new CxuiSelfTimer(mEngine->settings());

    connect(mSelfTimer, SIGNAL(timerFinished()), this, SLOT(focusAndCapture()));

    OstTrace0( camerax_performance, DUP1_CXUISTILLPRECAPTUREVIEW_CONSTRUCT, "msg: e_CX_STILLPRECAPVIEW_CONSTRUCT 0" );

    CX_DEBUG_EXIT_FUNCTION();

}

void CxuiStillPrecaptureView::loadDefaultWidgets()

{

    CX_DEBUG_ENTER_FUNCTION();

    CX_DEBUG_ASSERT(mDocumentLoader);

    // get pointer to the viewfinder

    QGraphicsWidget *widget = NULL;

    widget = mDocumentLoader->findWidget(STILL_PRE_CAPTURE_VIEWFINDER);

    mViewfinder = qobject_cast<HbTransparentWindow *>(widget);

    CX_DEBUG_ASSERT(mViewfinder);

    widget = mDocumentLoader->findWidget(STILL_PRE_CAPTURE_QUALITY_ICON);

    mQualityIcon = qobject_cast<HbLabel *>(widget);

    CX_DEBUG_ASSERT(mQualityIcon);

    widget = mDocumentLoader->findWidget(STILL_PRE_CAPTURE_INDICATOR_CONTAINER);

    mIndicators = qobject_cast<HbWidget *>(widget);

    CX_DEBUG_ASSERT(mIndicators);

    // create background for indicator container

    createWidgetBackgroundGraphic(mIndicators, TRANSPARENT_BACKGROUND_GRAPHIC);

    CX_DEBUG_EXIT_FUNCTION();

}

void CxuiStillPrecaptureView::loadWidgets()

{

    CX_DEBUG_ENTER_FUNCTION();

    CX_DEBUG_ASSERT(mDocumentLoader);

    if( mWidgetsLoaded ) {

        CX_DEBUG(("Widgets already loaded"));

        CX_DEBUG_EXIT_FUNCTION();

        return;

    }

    OstTrace0( camerax_performance, CXUISTILLPRECAPTUREVIEW_LOADWIDGETS, "msg: e_CX_STILLPRECAPTUREVIEW_LOADWIDGETS 1" );

    bool ok = false;

    OstTrace0( camerax_performance, DUP4_CXUISTILLPRECAPTUREVIEW_LOADWIDGETS, "msg: e_CX_DOCUMENTLOADER_LOAD 1" );

    mDocumentLoader->load(STILL_1ST_XML, STILL_PRE_CAPTURE_WIDGETS_SECTION, &ok);

    Q_ASSERT_X(ok, "camerax ui", "error in xml file parsing");

    if (CxuiServiceProvider::isCameraEmbedded()) {

        mDocumentLoader->load(STILL_1ST_XML, STILL_PRE_CAPTURE_EMBEDDED_SECTION, &ok);

    } else {

        mDocumentLoader->load(STILL_1ST_XML, STILL_PRE_CAPTURE_STANDALONE_SECTION, &ok);

    }

    OstTrace0( camerax_performance, DUP5_CXUISTILLPRECAPTUREVIEW_LOADWIDGETS, "msg: e_CX_DOCUMENTLOADER_LOAD 0" );

    Q_ASSERT_X(ok, "camerax ui", "error in xml file parsing");

    // get pointers to ui components from the layout data

    QGraphicsWidget *widget = NULL;

    QObject *object = NULL;

    widget = mDocumentLoader->findWidget(STILL_PRE_CAPTURE_ZOOM_SLIDER);

    mSlider = qobject_cast<CxuiZoomSlider *>(widget);

    CX_DEBUG_ASSERT(mSlider);

    mSlider->addZoomButtons();

    createWidgetBackgroundGraphic(mSlider, TRANSPARENT_BACKGROUND_GRAPHIC);

    if (mSelfTimer) {

        // let selftimer class get needed selftimer related widgets

        // from the documentloader

        mSelfTimer->loadSelftimerWidgets(mDocumentLoader);

    }

    // create background for selftimer containers

    HbWidget *container = NULL;

    widget = mDocumentLoader->findWidget(STILL_PRE_CAPTURE_SELFTIMER_CONTAINER);

    container = qobject_cast<HbWidget *>(widget);

    CX_DEBUG_ASSERT(container);

    createWidgetBackgroundGraphic(container, TRANSPARENT_BACKGROUND_GRAPHIC);

    // connect selftimer start button to hide controls

    widget = mDocumentLoader->findWidget(STILL_PRE_CAPTURE_SELFTIMER_START_BUTTON);

    HbPushButton *startButton = qobject_cast<HbPushButton *>(widget);

    CX_DEBUG_ASSERT(startButton);

    connect(startButton, SIGNAL(released()), this, SLOT(hideControls()));

    widget = mDocumentLoader->findWidget(STILL_PRE_CAPTURE_TOOLBAR);

    mToolbar = qobject_cast<HbToolBar *>(widget);

    CX_DEBUG_ASSERT(mToolbar);

    object = mDocumentLoader->findObject(STILL_PRE_CAPTURE_FLASH_ACTION);

    mFlashSetting = qobject_cast<HbAction *>(object);

    CX_DEBUG_ASSERT(mFlashSetting);

    widget = mDocumentLoader->findWidget(STILL_PRE_CAPTURE_IMAGES_LEFT_LABEL);

    mImagesLeft = qobject_cast<HbLabel *>(widget);

    CX_DEBUG_ASSERT(mImagesLeft);

    widget = mDocumentLoader->findWidget(STILL_PRE_CAPTURE_IMAGES_LEFT_CONTAINER);

    mImagesLeftContainer = qobject_cast<HbWidget *>(widget);

    CX_DEBUG_ASSERT(mImagesLeftContainer);

    createWidgetBackgroundGraphic(mImagesLeftContainer, TRANSPARENT_BACKGROUND_GRAPHIC);

    updateImagesLeftLabel();

    if (CxuiServiceProvider::isCameraEmbedded()) {

        CX_DEBUG(("EMBEDDED: camera in embedded mode"));

        if (!CxuiServiceProvider::instance()->allowQualityChange()) {

            CX_DEBUG(("EMBEDDED: don't allow quality change"));

            HbAction* iq = qobject_cast<HbAction*>(mDocumentLoader->findObject(STILL_PRE_CAPTURE_IMAGE_QUALITY_ACTION));

            if (iq) {

                CX_DEBUG(("EMBEDDED: setting image quality setting to disabled"));

                iq->setEnabled(false);

            }

        }

        if (!CxuiServiceProvider::instance()->allowModeSwitching()) {

            CX_DEBUG(("EMBEDDED: don't allow mode switching"));

            HbAction *video = qobject_cast<HbAction*>(mDocumentLoader->findObject(STILL_PRE_CAPTURE_GOTO_VIDEO_ACTION));

            if (video) {

                CX_DEBUG(("EMBEDDED: setting mode switch to disabled"));

                video->setEnabled(false);

            }

        }

        if (!CxuiServiceProvider::instance()->allowCameraSwitching()) {

            CX_DEBUG(("EMBEDDED: don't allow camera switching"));

        }

    }

    // Setting widgets loaded here so updating icons works.

    mWidgetsLoaded = true;

    // Update toolbar flash mode icon

    int flash;

    if (mEngine->settings().get(CxeSettingIds::FLASH_MODE, flash) == CxeError::None) {

        handleSettingValueChanged(CxeSettingIds::FLASH_MODE, flash);

    }

    // Update toolbar scene mode icon

    QString sceneId;

    if (mEngine->settings().get(CxeSettingIds::SCENE_ID, sceneId) == CxeError::None) {

        updateSceneIcon(sceneId);

    }

    hideControls();

    OstTrace0( camerax_performance, DUP1_CXUISTILLPRECAPTUREVIEW_LOADWIDGETS, "msg: e_CX_STILLPRECAPTUREVIEW_LOADWIDGETS 0" );

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Initializing settings grid

*/

void CxuiStillPrecaptureView::initializeSettingsGrid()

{

    if(!mSettingsGrid) {

        HbAction* action(NULL);

        // Initialize settings grid

        mSettingsGrid = new HbToolBarExtension;

        action = mSettingsGrid->addAction(HbIcon("qtg_mono_exposure"), hbTrId("txt_cam_button_exposure_compensation"), this, SLOT(launchSliderSetting()));

        action->setProperty(PROPERTY_KEY_SETTING_ID, CxeSettingIds::EV_COMPENSATION_VALUE);

        action->setProperty(PROPERTY_KEY_SETTING_GRID, PROPERTY_KEY_TRUE);

        action = mSettingsGrid->addAction(HbIcon("qtg_mono_iso"), hbTrId("txt_cam_button_iso"), this, SLOT(launchSetting()));

        action->setProperty(PROPERTY_KEY_SETTING_ID, CxeSettingIds::LIGHT_SENSITIVITY);

        action->setProperty(PROPERTY_KEY_SETTING_GRID, PROPERTY_KEY_TRUE);

        action = mSettingsGrid->addAction(HbIcon("qtg_small_rgb"), hbTrId("txt_cam_button_color_tone"), this, SLOT(launchSetting()));

        action->setProperty(PROPERTY_KEY_SETTING_ID, CxeSettingIds::COLOR_TONE);

        action->setProperty(PROPERTY_KEY_SETTING_GRID, PROPERTY_KEY_TRUE);

        action = mSettingsGrid->addAction(HbIcon("qtg_mono_white_balance"), hbTrId("txt_cam_button_white_balance"), this, SLOT(launchSetting()));

        action->setProperty(PROPERTY_KEY_SETTING_ID, CxeSettingIds::WHITE_BALANCE);

        action->setProperty(PROPERTY_KEY_SETTING_GRID, PROPERTY_KEY_TRUE);

        action = mSettingsGrid->addAction(HbIcon("qtg_mono_sharpness"), hbTrId("txt_cam_grid_sharpness"), this, SLOT(launchSliderSetting()));

        action->setProperty(PROPERTY_KEY_SETTING_ID, CxeSettingIds::SHARPNESS);

        action->setProperty(PROPERTY_KEY_SETTING_GRID, PROPERTY_KEY_TRUE);

        action = mSettingsGrid->addAction(HbIcon("qtg_mono_contrast"), hbTrId("txt_cam_button_contrast"), this, SLOT(launchSliderSetting()));

        action->setProperty(PROPERTY_KEY_SETTING_ID, CxeSettingIds::CONTRAST);

        action->setProperty(PROPERTY_KEY_SETTING_GRID, PROPERTY_KEY_TRUE);

        action->setProperty(PROPERTY_KEY_SETTING_GRID, PROPERTY_KEY_TRUE);

        connect(mCaptureKeyHandler, SIGNAL(autofocusKeyPressed()), mSettingsGrid, SLOT(close()));

    }

}

void CxuiStillPrecaptureView::handleSnapshot(CxeError::Id error)

{

    CX_DEBUG_ENTER_FUNCTION();

    if (mPendingAfCanceling) {

        mPendingAfCanceling = false;

        mEngine->autoFocusControl().cancel();

    }

    if (error == CxeError::None) {

        // Enging may emit snapshot events even if we don't need the snapshot.

        // Check if postcapture is actually wanted and change view now if so.

        if(isPostcaptureOn()) {

            emit changeToPostcaptureView();

            if (mSlider) {

                mSlider->hide();

            }

        }

    } else {

        emit reportError(error);

    }

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

     Method for starting focusing which will be followed by capture.

     Meant for selftimer purposes. If autofocusing is not supported, capture

     will start without focusing.

     \sa capture()

     \sa handleAutofocusKeyPressed()

     \sa handleCaptureKeyPressed()

     \sa setCapturePending()

 */

void CxuiStillPrecaptureView::focusAndCapture()

{

    CX_DEBUG_ENTER_FUNCTION();

    if (!mEngine->autoFocusControl().supported()) {

        // autofocus is not supported, so start capturing straight away

        capture();

    } else {

        // start focusing

        // Auto-focus can only work if viewfinder is running

        if (mEngine->viewfinderControl().state() == CxeViewfinderControl::Running) {

            mEngine->autoFocusControl().start(false);

        }

        setCapturePending();

    }

    CX_DEBUG_EXIT_FUNCTION();

}

void CxuiStillPrecaptureView::capture()

{

    CX_DEBUG_ENTER_FUNCTION();

    mCapturePending = false;

    if (mEngine->mode() == Cxe::ImageMode) {

        // do not start capturing, if it is already ongoing

        // the user might be repeatedly triggering capture key

        if (mEngine->stillCaptureControl().state() == CxeStillCaptureControl::Ready) {

            // If focusing in progress, cancel it now.

            // Set capture pending and continue once focusing is cancelled.

            if(mEngine->autoFocusControl().state() == CxeAutoFocusControl::InProgress) {

                mEngine->autoFocusControl().cancel();

                setCapturePending();

            } else {

                // Engine uses disk space *estimate* for imagesLeft() so it

                // should not cause significant delay / additional shutter lag.

                if (mEngine->stillCaptureControl().imagesLeft()) {

                    mEngine->stillCaptureControl().reset();  //! @todo: Do not delete snapshots before images are really saved

                    mEngine->stillCaptureControl().capture();

                } else {

                    launchDiskFullNotification();

                }

            }

        } else {

            setCapturePending();

        }

    }

    // after capturing check what is the new amount for images left

    updateImagesLeftLabel();

    CX_DEBUG_EXIT_FUNCTION();

}

void CxuiStillPrecaptureView::setCapturePending()

{

    CX_DEBUG_ENTER_FUNCTION();

    mCapturePending = true;

    QTimer::singleShot(CXUI_CAPTURE_PENDING_TIMEOUT, this, SLOT(resetCapturePendingFlag()));

    CX_DEBUG_EXIT_FUNCTION();

}

void CxuiStillPrecaptureView::goToVideo()

{

    CX_DEBUG_ENTER_FUNCTION();

    OstTrace0( camerax_performance, DUP1_CXUISTILLPRECAPTUREVIEW_GOTOVIDEO, "msg: e_CX_GO_TO_VIDEO_MODE 1" );

    hideControls();

    mEngine->initMode(VideoMode);

    emit changeToPrecaptureView();

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

    CxuiStillPrecaptureView::handleAutoFocusStateChanged

    \sa focusAndCapture()

    \sa capture()

    \sa handleAutofocusKeyPressed()

*/

void CxuiStillPrecaptureView::handleAutoFocusStateChanged(CxeAutoFocusControl::State newstate, CxeError::Id error)

{

    CX_DEBUG_ENTER_FUNCTION();

    CxeAutoFocusControl::Mode mode = mEngine->autoFocusControl().mode();

    CX_DEBUG( ("CxuiStillPrecaptureView::handleAutoFocusStateChanged <> error: %d mode: %d state %d", error, mode,

            newstate ) );

    switch (newstate) {

    case CxeAutoFocusControl::Failed:

    case CxeAutoFocusControl::Ready:

        if (mCapturePending) {

            // focus and capture were grouped together, capture straight away

            capture();

        }

        break;

    case CxeAutoFocusControl::Unknown:

        // Capture key was pressed, focus has been cancelled,

        // continue with capturing.

        if(mCapturePending) {

            CX_DEBUG(("mCapturePending is true, starting capture now"));

            capture();

        }

        break;

    default:

        break;

    }

    //}

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Handle capture key full press.

*/

void CxuiStillPrecaptureView::handleCaptureKeyPressed()

{

    CX_DEBUG_ENTER_FUNCTION();

    if (mEngine->mode() == Cxe::ImageMode) {

        OstTrace0(camerax_performance, CXUISTILLPRECAPTUREVIEW_SHOT_TO_SHOT, "msg: e_CX_SHOT_TO_SHOT 1");

        OstTrace0(camerax_performance, CXUISTILLPRECAPTUREVIEW_SHOT_TO_SNAP, "msg: e_CX_SHOT_TO_SNAPSHOT 1");

        OstTrace0(camerax_performance, CXUISTILLPRECAPTUREVIEW_SHOT_TO_SAVE, "msg: e_CX_SHOT_TO_SAVE 1");

        menu()->close();

        // close open dialogs

        closeDialogs();

        if (mSelfTimer && mSelfTimer->isEnabled() ) {

            if (mSelfTimer->isOngoing()) {

                // dismiss selftimer and capture image

                mSelfTimer->cancel();

                capture();

            } else {

                // start selftimer if it is enabled and not yet started

                mSelfTimer->startTimer();

            }

        } else {

            // normal capture

            capture();

        }

    }

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Handle capture key half pressed (aka "autofocus key press").

*/

void CxuiStillPrecaptureView::handleAutofocusKeyPressed()

{

    CX_DEBUG_ENTER_FUNCTION();

    OstTrace0( camerax_performance, CXUISTILLPRECAPTUREVIEW_AUTOFOCUS, "msg: e_CX_AUTOFOCUS_LOCK 1" );

    // Base class handling needs to happen first to keep e.g. settings dialogs handling sane.

    CxuiPrecaptureView::handleAutofocusKeyPressed();

    if (!mEngine->autoFocusControl().supported()) {

        CX_DEBUG(("Autofocus not supported, ignoring key press"));

        CX_DEBUG_EXIT_FUNCTION();

        return;

    }

    // in case of selftimer being enabled, autofocuskey does not start focusing

    if (mSelfTimer && mSelfTimer->isEnabled()){

        CX_DEBUG(("Selftimer enabled, ignoring autofocus key press"));

        CX_DEBUG_EXIT_FUNCTION();

        return;

    }

    // Auto-focus can only work if viewfinder is running

    if (mEngine->viewfinderControl().state() == CxeViewfinderControl::Running) {