/*

* Copyright (c) 2009 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:

*

*/

#ifndef CXUIPRECAPTUREVIEW_H

#define CXUIPRECAPTUREVIEW_H

#include <QObject>

#include <QTimer>

#include <QList>

#include <hbview.h>

#include <hbradiobuttonlist.h>

#include <hbframedrawer.h>

#include "cxezoomcontrol.h"

#include "cxeviewfindercontrol.h"

#include "cxuidisplaypropertyhandler.h"

class HbAction;

class HbLabel;

class HbSlider;

class CxeEngine;

class HbMainWindow;

class CxuiSettingsInfo;

class HbToolBarExtension;

class CxuiDocumentLoader;

class HbTransparentWindow;

class CxuiCaptureKeyHandler;

class CxuiCaptureKeyHandler;

class CxuiSettingDialog;

class CxuiSettingRadioButtonList;

class CxuiSettingSlider;

class HbToolBarExtension;

/**

 * Pre-capture view

 */

class CxuiPrecaptureView : public HbView

{

    Q_OBJECT

public:

    CxuiPrecaptureView(QGraphicsItem *parent = 0);

    virtual ~CxuiPrecaptureView();

public:

    /**

     * Construct-method handles initialisation tasks for this class.

     * @param mainwindow

     * @param engine

     * @param documentLoader

     * @param keyHandler

     */

    virtual void construct(HbMainWindow *mainWindow, CxeEngine *engine,

                           CxuiDocumentLoader *documentLoader,

                           CxuiCaptureKeyHandler *keyHandler);

    /**

     * Loads widgets that are not part of the default section in layouts xml.

     * Widgets are created at the time they are first loaded.

     */

    virtual void loadWidgets() = 0;

    void prepareWindow();

    virtual void updateOrientation(Qt::Orientation orient) = 0;

public slots:

    void releaseCamera();

    void initCamera();

    void requestCameraSwitch();

    // whenever a setting is changed on the engine side, an icon might need updating

    // connects to the settingValueChanged signal of CxeSettings

    virtual void handleSettingValueChanged(const QString& key, QVariant newValue);

protected slots:

    // Key events

    virtual void handleAutofocusKeyPressed();

    // Camera / Engine

    void handleEngineZoomStateChange(CxeZoomControl::State newState, CxeError::Id error);

    void handleZoomLevelChange(int);

    void handleVfStateChanged(CxeViewfinderControl::State newState, CxeError::Id error);

    virtual void handleFocusGained();

    virtual void handleFocusLost() = 0;

    // UI: Zoom slider change notification

    void zoomTo(int value);

    // Control visibility of all UI items at the same time: toolbar, zoom and titlepane items

    virtual void showControls();

    void toggleControls();

    void disableControlsTimeout();

    void toggleZoom();

    void hideToolbar();

    void launchPhotosApp();

    void launchVideosApp();

    // Settings related

    void launchNotSupportedNotification();

    void showSettingsGrid();

    void hideSettingsGrid();

    void launchSliderSetting();

    void prepareToShowDialog(HbAction *action);

    void prepareToCloseDialog(HbAction *action);

protected:

   virtual void initializeSettingsGrid() = 0;

    void hideZoom();

    void showZoom();

    void showEvent(QShowEvent *event);

    void hideEvent(QHideEvent *event);

    void mousePressEvent(QGraphicsSceneMouseEvent *event);

    virtual void showToolbar();

    bool eventFilter(QObject *object, QEvent *event);

    void launchSettingsDialog(QObject *action);

    bool isPostcaptureOn() const;

    QString getSettingItemIcon(const QString &key, QVariant value);

    void updateQualityIcon();

    void createWidgetBackgroundGraphic(HbWidget *widget,

                                       const QString &graphicName,

                                       HbFrameDrawer::FrameType frameType =

                                       HbFrameDrawer::NinePieces);

signals:

    // signals to switch to post/pre-capture view.

    void changeToPostcaptureView();

    void changeToPrecaptureView();

    // Switching between cameras

    void switchCamera();

    // signals to start and stop standby timer

    void startStandbyTimer();

    void stopStandbyTimer();

    // signal to report error to ErrorManager for further actions.

    void reportError(CxeError::Id errorId);

protected:

    CxeEngine *mEngine; // not own

    HbTransparentWindow *mViewfinder; // not own, owned by the graphics scene

    HbMainWindow *mMainWindow; // not own

    CxuiDocumentLoader *mDocumentLoader; // not own

    CxuiDisplayPropertyHandler *mDisplayHandler;

    bool   mControlsVisible;

    QTimer mHideControlsTimeout;

    HbToolBar *mToolBar; // not own, owned by the graphics scene

    HbToolBarExtension *mSettingsGrid;

    bool mZoomVisible;

    bool mWidgetsLoaded;

    CxuiSettingDialog *mSettingsDialog;

    CxuiSettingRadioButtonList *mSettingsDialogList;

    CxuiCaptureKeyHandler *mKeyHandler;

    HbLabel *mQualityIcon;

private:

    CxuiSettingDialog* createSettingsDialog();

    CxuiSettingDialog* createSliderSettingsDialog();

    QPointF getDialogPosition();

private:

    HbLabel *mSettingsDialogHeading;

    CxuiSettingDialog *mSliderSettingsDialog;

    HbLabel *mSliderSettingsDialogHeading;

    CxuiSettingSlider *mSettingsSlider;

    CxuiSettingsInfo *mSettingsInfo;

};

#endif // CXUIPRECAPTUREVIEW_H