/*

* Copyright (c) 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 <QGraphicsItem>

#include <QProcess>

#include <QGraphicsSceneEvent>

#include <hbtoolbar.h>

#include <hbnotificationdialog.h>

#include <hbframeitem.h>

#include "cxuiview.h"

#include "cxutils.h"

#include "cxeengine.h"

#include "cxuidocumentloader.h"

#include "cxuicapturekeyhandler.h"

#include "cxecameradevicecontrol.h"

#include "cxevideocapturecontrol.h"

#include "cxuizoomslider.h"

#include "cxezoomcontrol.h"

// CONSTANTS

const QString PhotosAppExe = "photos.exe";

const QString VideosAppExe = "videoplayer.exe";

/*!

* Constructor

*/

CxuiView::CxuiView(QGraphicsItem *parent) :

        HbView(parent),

        mMainWindow(NULL),

        mEngine(NULL),

        mDocumentLoader(NULL),

        mSlider(NULL),

        mToolbar(NULL),

        mIndicators(NULL),

        mHideControlsTimeout(this),

        mControlsFeedback(HbFeedback::BasicItem)

{

    CX_DEBUG_IN_FUNCTION();

}

/*!

* Destructor

*/

CxuiView::~CxuiView()

{

    CX_DEBUG_IN_FUNCTION();

}

/*!

* CxuiView::construct

*/

void CxuiView::construct(HbMainWindow *mainWindow, CxeEngine *engine,

                         CxuiDocumentLoader *documentLoader,

                         CxuiCaptureKeyHandler * keyHandler,

                         HbActivityManager *activityManager)

{

    CX_DEBUG_ENTER_FUNCTION();

    //Minimum requirements to construct the view

    CX_ASSERT_ALWAYS(mainWindow);

    CX_ASSERT_ALWAYS(engine);

    CX_ASSERT_ALWAYS(documentLoader);

    CX_ASSERT_ALWAYS(activityManager);

    mMainWindow = mainWindow;

    mDocumentLoader = documentLoader;

    mCaptureKeyHandler = keyHandler;

    mEngine = engine;

    mActivityManager = activityManager;

    // adjust the timer, and connect it to correct slot

    connect(&mHideControlsTimeout, SIGNAL(timeout()), this, SLOT(hideControls()));

    mHideControlsTimeout.setSingleShot(true);

    mHideControlsTimeout.setInterval(CXUI_HIDE_CONTROLS_TIMEOUT);

    mControlsFeedback.setOwningWindow(mMainWindow);

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Is standby mode supported / needed by this view.

* Default implementation returns false.

* Inherited classes need to re-implement this if standby mode is needed.

* @return True if standby mode is supported, false otherwise.

*/

bool CxuiView::isStandbyModeSupported() const

{

    return false;

}

/*!

* CxuiView::updateOrientation

*/

void CxuiView::updateOrientation(Qt::Orientation orientation)

{

    CX_DEBUG_ENTER_FUNCTION();

    hideControls();

    mMainWindow->setOrientation(orientation);

    if (mToolbar) {

        if (orientation == Qt::Horizontal) {

            mToolbar->setOrientation(Qt::Vertical);

        } else {

            mToolbar->setOrientation(Qt::Horizontal);

        }

    }

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

 * Restore view state from activity. Default implementation does nothing.

 */

void CxuiView::restoreActivity(const QString &activityId, const QVariant &data)

{

    Q_UNUSED(activityId);

    Q_UNUSED(data);

}

/*!

 * Save view state to activity. Default implementation does nothing.

 */

void CxuiView::saveActivity()

{

}

/*!

 * Clear activity from activity manager. Default implementation does nothing.

 */

void CxuiView::clearActivity()

{

}

/*!

* Allow showing UI controls?

* Default behaviour is that controls can be shown at any time.

*/

bool CxuiView::allowShowControls() const

{

    return true;

}

/*!

 * Play feedback when touching view outside of any widget?

 * Default behaviour is that feedback is always played.

 */

bool CxuiView::isFeedbackEnabled() const

{

    return true;

}

/*!

* Toggle visibility of UI controls.

*/

void CxuiView::toggleControls()

{

    CX_DEBUG_ENTER_FUNCTION();

    if (mControlsVisible) {

        hideControls();

    } else {

        showControls();

    }

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Slot for entering standby mode.

* By default, release camera.

*/

void CxuiView::enterStandby()

{

    CX_DEBUG_IN_FUNCTION();

    releaseCamera();

    CX_DEBUG_IN_FUNCTION();

}

/*!

* Slot for exiting standby mode.

* By default, no action needed.

*/

void CxuiView::exitStandby()

{

    CX_DEBUG_IN_FUNCTION();

}

/*!

* CxuiView::launchNotSupportedNotification

* Show "not supported" notification.

*/

void CxuiView::launchNotSupportedNotification()

{

    CX_DEBUG_ENTER_FUNCTION();

    HbNotificationDialog::launchDialog("Notification", "Not supported yet");

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

 * CxuiView::launchScenesView

 */

void CxuiView::launchScenesView()

{

    CX_DEBUG_ENTER_FUNCTION();

    hideControls();

    emit showScenesView();

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

 * CxuiView::launchPhotosApp

 */

void CxuiView::launchPhotosApp()

{

    // Release camera device in order to free resources for Photos application

    releaseCamera();

    QProcess::startDetached(PhotosAppExe);

}

/*!

 * CxuiView::launchVideosApp

 * Launching Videos application as a separate process

 */

void CxuiView::launchVideosApp()

{

    // Release camera device in order to free resources for Videos application

    releaseCamera();

    QProcess::startDetached(VideosAppExe);

}

/*!

 * Releasing camera hw

 */

void CxuiView::releaseCamera()

{

    CX_DEBUG_ENTER_FUNCTION();

    mEngine->cameraDeviceControl().release();

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

 * CxuiView::hideControls

 */

void CxuiView::hideControls()

{

    CX_DEBUG_ENTER_FUNCTION();

    if (mHideControlsTimeout.isActive()) {

        mHideControlsTimeout.stop();

    }

    hideZoom();

    hideToolbar();

    // show indicators when controls are hidden

    showIndicators();

    mControlsVisible = false;

    // give the keyboard focus back to the view

    // for the view to receive key events

    setFocus();

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

 * CxuiView::showControls

 */

void CxuiView::showControls()

{

    if (allowShowControls()) {

        // show toolbar

        showToolbar();

        // show zoom

        showZoom();

        // show title bar and status bar

        setTitleBarVisible(true);

        setStatusBarVisible(true);

        // hide indicators when controls are shown

        hideIndicators();

        mHideControlsTimeout.start();

        mControlsVisible = true;

    }

}

/*!

 * CxuiView::hideToolbar

 */

void CxuiView::hideToolbar()

{

    CX_DEBUG_ENTER_FUNCTION();

    if (mToolbar) {

        mToolbar->hide();

    }

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

 * CxuiView::showToolbar

 */

void CxuiView::showToolbar()

{

    CX_DEBUG_ENTER_FUNCTION();

    if (mToolbar) {

        mToolbar->show();

    }

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

 * CxuiView::hideIndicators

 */

void CxuiView::hideIndicators()

{

    if (mIndicators) {

        mIndicators->hide();

    }

}

/*!

 * CxuiView::showIndicators

 */

void CxuiView::showIndicators()

{

    if (mIndicators) {

        mIndicators->show();

    }

}

/*!

 * CxuiView::hideZoom

 */

void CxuiView::hideZoom()

{

    if (mSlider) {

        mSlider->hide();

    }

    mZoomVisible = false;

}

/*!

 * CxuiView::showZoom

 */

void CxuiView::showZoom()

{

    CX_DEBUG_ENTER_FUNCTION();

    if (mSlider) {

        // if maxVal has not been set yet, ask for new parameters from engine

        if (mSlider->maximum() <= 0) {

            // get the zoom range

            int min = mEngine->zoomControl().min();

            int max = mEngine->zoomControl().max();

            // only change values if they are acceptable and have changed

            if ((max - min > 0) && ((mSlider->maximum() != max) || (mSlider->minimum() != min))) {

                mSlider->setRange(min, max);

            }

        }

        // show zoom only if the slider has acceptable value

        if (mSlider->maximum() > 0) {

            mSlider->show();

        }

    }

    mZoomVisible = true;

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Function can be used to create a graphics item and setting it as a background

* item for HbWidget. graphicName refers to system wide graphic name. Given graphic

* can consist of one, three or nine pieces. Nine piece graphics are used by default.

* See HbFrameDrawer documentation for graphic naming.

*/

void CxuiView::createWidgetBackgroundGraphic(HbWidget *widget,

                                                       const QString &graphicName,

                                                       HbFrameDrawer::FrameType frameType)

{

    if (widget) {

        HbFrameDrawer *drawer = new HbFrameDrawer(graphicName, frameType);

        if (drawer) {

            HbFrameItem *backgroundItem = new HbFrameItem(drawer, widget);

            if (backgroundItem) {

                // set item to fill the whole widget

                backgroundItem->setGeometry(QRectF(QPointF(0, 0), widget->size()));

                backgroundItem->setZValue(0);

                widget->setBackgroundItem(backgroundItem);

            }

        }

    }

}

/*!

 * Handle mouse press events on this view. Needed to implement toggling of

 * controls and playing feedback.

 * \param event event to be handled

 */

void CxuiView::mousePressEvent(QGraphicsSceneMouseEvent *event)

{

    //! @todo temporary workaround for title bar mouse event handling bug

    if (event->type() == QEvent::GraphicsSceneMousePress && event->scenePos().y() > 70 &&

        isFeedbackEnabled()) {

        mControlsFeedback.setModalities(HbFeedback::All);

        mControlsFeedback.play();

        event->accept();

    }

}

/*!

 * Handle mouse release events on this view. Needed to implement toggling of

 * controls and playing feedback.

 * \param event to be handled

 */

void CxuiView::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)

{

    //! @todo temporary workaround for title bar mouse event handling bug

    if (event->type() == QEvent::GraphicsSceneMouseRelease && event->scenePos().y() > 70 &&

        isFeedbackEnabled()) {        

        mControlsFeedback.setModalities(HbFeedback::Tactile);

        mControlsFeedback.play();

        toggleControls();

        event->accept();

    }

}

// End of file