/*!

* 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: Dialpad popup

*

*/

#include <QtGui>

#include <hbframedrawer.h>

#include <hbinstance.h>

#include <hbeffect.h>

#include <hbinstance.h>

#include <hbmainwindow.h>

#include <hbstyleloader.h>

#include <hblineedit.h>

#include <hbapplication.h>

#include "dialpad.h"

#include "dialpadinputfield.h"

#include "dialpadkeypad.h"

#include "dialpadbutton.h"

#include "dialpadmultitaphandler.h"

#include "dialpadbackground.h"

static const QString backgroundGraphics("qtg_fr_input_v_bg");

static const QString backgroundGraphicsH("qtg_fr_input_h_bg");

static const QString minimizeIcon("qtg_graf_input_v_swipe");

static const QString minimizeIconH("qtg_graf_input_h_swipe");

static const qreal DialpadCloseSwipeDistanceV = 0.25; //compared to total height

static const qreal DialpadCloseSwipeDistanceH = 0.33; // > button width

static const int DialpadMaxSwipeTime = 300; // ms

static const int DialpadCloseAnimDuration = 200; // ms

static const int DialpadOpenAnimDuration = 200; // ms

static const qreal DialpadComponentMargin = 0.75; // units

static const qreal DialpadCloseHandleHeight = 2.23; // units

static const qreal DialpadCloseHandleWidth = 18.8; // units

Dialpad::Dialpad() :

    mMainWindow(*hbInstance->allMainWindows().at(0)),

    mBackgroundItem(0),

    mMouseButtonPressedDown(false),

    mOpenTimeLine(DialpadOpenAnimDuration),

    mCloseTimeLine(DialpadCloseAnimDuration),

    mAnimationOngoing(false),

    mOrientation(Qt::Vertical),

    mIsOpen(false)

{

    // this constuctor is deprecated

    initialize();

}

Dialpad::Dialpad(const HbMainWindow& mainWindow) :

    mMainWindow(mainWindow),

    mBackgroundItem(0),

    mMouseButtonPressedDown(false),

    mOpenTimeLine(DialpadOpenAnimDuration),

    mCloseTimeLine(DialpadCloseAnimDuration),

    mAnimationOngoing(false),

    mOrientation(Qt::Vertical),

    mIsOpen(false)

{

    initialize();

}

void Dialpad::initialize()

{

    setFocusPolicy(Qt::StrongFocus);

    setFlag(QGraphicsItem::ItemIsFocusable,true);

    // create input field

    mInputField = new DialpadInputField(this);

    // create keypad

    mKeypad = new DialpadKeypad(mMainWindow,*mInputField,this);

    mKeypad->setLongPressDuration(DialpadMaxSwipeTime);

    // layouting params

    qreal unit = HbDeviceProfile::current().unitValue();

    qreal margin = DialpadComponentMargin * unit;

    mCloseHandleHeight = DialpadCloseHandleHeight * unit;

    mCloseHandleWidth = DialpadCloseHandleWidth * unit;

    // create popup background

    mBackgroundDrawer = new HbFrameDrawer();

    mIconDrawer = new HbFrameDrawer();

    // popup layout

    popupLayout->addItem(mInputField);

    popupLayout->addItem(mKeypad);

    popupLayout->setContentsMargins(margin, mCloseHandleHeight, margin, margin);

    popupLayout->setSpacing(margin);

    setLayout(popupLayout);

    // asterisk multitap handler

    mMultitap = new DialpadMultitapHandler(mInputField->editor(),this);

    mInputField->editor().installEventFilter(mMultitap);

    // close animation

    mCloseTimeLine.setEasingCurve(QEasingCurve::InQuad);

    connect(&mCloseTimeLine, SIGNAL(finished()),

            SLOT(closeAnimFinished()));

    connect(&mCloseTimeLine, SIGNAL(valueChanged(qreal)),

            SLOT(closeAnimValueChanged(qreal)));

    // open animation

    mOpenTimeLine.setEasingCurve(QEasingCurve::OutQuad);

    connect(&mOpenTimeLine, SIGNAL(finished()),

            SLOT(openAnimFinished()));

    connect(&mOpenTimeLine, SIGNAL(valueChanged(qreal)),

            SLOT(openAnimValueChanged(qreal)));

    // default values

    setPos(0,0);

    setPreferredSize(360,360);

    setZValue(0x00004000); // Hb PopupZValueRangeStart

    hide();

    mMainWindow.scene()->addItem(this);

    // custom button style

    HbStyleLoader::registerFilePath(":/dialpad.css");

    HbStyleLoader::registerFilePath(":/dialpad_color.css");

    HbStyleLoader::registerFilePath(":/dialpad.dialpadbutton.widgetml");

    // grab gestures so that those are not passed to widgets behind dialpad

    grabGesture(Qt::TapGesture);

    grabGesture(Qt::TapAndHoldGesture);

    grabGesture(Qt::PanGesture);

    grabGesture(Qt::SwipeGesture);

    grabGesture(Qt::PinchGesture);

}

Dialpad::~Dialpad()

{

    delete mBackgroundDrawer;

    delete mIconDrawer;

    delete mBackgroundItem;

}

void Dialpad::paint(

    QPainter* painter,

    const QStyleOptionGraphicsItem* option,

    QWidget* widget)

{

    Q_UNUSED(option);

    Q_UNUSED(widget);

    // paint popup background

    if ( mOrientation == Qt::Vertical ) {

        mBackgroundDrawer->setFrameGraphicsName(backgroundGraphics);

        mIconDrawer->setFrameGraphicsName(minimizeIcon);

        mBackgroundDrawer->setFrameType(HbFrameDrawer::ThreePiecesVertical);

        mBackgroundDrawer->setBorderWidths(0.0, mCloseHandleHeight, 0.0, 0.0);

    } else {

        mBackgroundDrawer->setFrameGraphicsName(backgroundGraphicsH);

        mIconDrawer->setFrameGraphicsName(minimizeIconH);

        mBackgroundDrawer->setFrameType(HbFrameDrawer::ThreePiecesHorizontal);

        mBackgroundDrawer->setBorderWidths(mCloseHandleHeight, 0.0, 0.0, 0.0);

    }

    // draw background

    QRectF rect = boundingRect();

    mBackgroundDrawer->setFillWholeRect(true);

    mBackgroundDrawer->paint(painter, rect);

    // adjust rectangle to close bar position

    if ( mOrientation == Qt::Vertical ) {

        rect.setLeft((rect.width()- mCloseHandleWidth)/2);

        rect.setWidth(mCloseHandleWidth);

        rect.setHeight(mCloseHandleHeight);

    } else {

        if (layoutDirection()==Qt::LeftToRight) {

            rect.setTop((rect.height() - mCloseHandleWidth)/2);

            rect.setWidth(mCloseHandleHeight);

            rect.setHeight(mCloseHandleWidth);

        } else {

            rect.setLeft((rect.width() - mCloseHandleHeight));

            rect.setTop((rect.height() - mCloseHandleWidth)/2);

            rect.setWidth(mCloseHandleHeight);

            rect.setHeight(mCloseHandleWidth);

        }

    }

    mIconDrawer->setFrameType(HbFrameDrawer::OnePiece);

    mIconDrawer->paint(painter, rect);

}

bool Dialpad::isOpen() const

{

    return mIsOpen;

}

void Dialpad::openDialpad()

{

    mKeypad->resetButtons();

    if (mIsOpen) {

        return;

    }

    connect(&mMainWindow,SIGNAL(aboutToChangeOrientation()),

            SLOT(orientationChangeStarted()));

    connect(&mMainWindow,SIGNAL(orientationChanged(Qt::Orientation)),

            SLOT(orientationChangeFinished(Qt::Orientation)));

    // set offset for open animation

    int previousOrientation = mOrientation;

    mOrientation = mMainWindow.orientation();

    mPosition = pos();

    if (mOrientation==Qt::Vertical) {

        qreal height = geometry().height();

        setPos(mPosition.x(),mPosition.y()+height);

    } else {

        qreal width = geometry().width();

        if (layoutDirection()==Qt::LeftToRight) {

            setPos(mPosition.x()+width,mPosition.y());

        } else {

            setPos(mPosition.x()-width,mPosition.y());

        }

    }

    if (mOrientation!=previousOrientation) {

        mKeypad->createButtonGrid();

        updateLayout((Qt::Orientation)mOrientation);

    }

    show();

    setFocusProxy(&mInputField->editor());

    mInputField->editor().setFocus();

    mOpenTimeLine.start();

    mAnimationOngoing = true;

    if (!mInputField->editor().text().isEmpty()) {

        setCallButtonEnabled(true);

    }

    mIsOpen = true;

    emit aboutToOpen();

}

void Dialpad::closeDialpad()

{

    close();

    disconnect(&mMainWindow,SIGNAL(aboutToChangeOrientation()),

               this, SLOT(orientationChangeStarted()));

    disconnect(&mMainWindow,SIGNAL(orientationChanged(Qt::Orientation)),

               this, SLOT(orientationChangeFinished(Qt::Orientation)));

    if (mBackgroundItem) {

        mBackgroundItem->hide();

    }

}    

HbLineEdit& Dialpad::editor() const

{

    return mInputField->editor();

}

void Dialpad::setCallButtonEnabled(bool enabled)

{

    mKeypad->setCallButtonEnabled(enabled);

}

void Dialpad::setTapOutsideDismiss(bool dismiss)

{

    // set dismiss policy before opening dialpad

    Q_ASSERT(!isVisible());

    if (dismiss) {

        mBackgroundItem = new DialpadBackground(*this);

        mBackgroundItem->setZValue(zValue()-1);

        mMainWindow.scene()->addItem(mBackgroundItem);

        qreal chromeHeight = 0;

        hbInstance->style()->parameter("hb-param-widget-chrome-height",

                                       chromeHeight);

        mTitleBarHeight = chromeHeight;

    } else {

        delete mBackgroundItem;

        mBackgroundItem = 0;

    }

}

bool Dialpad::sceneEvent(QEvent *event)

{

    return handleSceneEvent(event);

}

bool Dialpad::sceneEventFilter(QGraphicsItem *watched, QEvent *event)        

{

    Q_UNUSED(watched);

    return handleSceneEvent(event);

}

bool Dialpad::handleSceneEvent(QEvent *event)

{

    // handle close swipe gesture

    if (event->type() == QEvent::GraphicsSceneMousePress) {

        mMouseButtonPressedDown = true;

        mSwipeTimer.start();

    } else if (event->type() == QEvent::GraphicsSceneMouseRelease &&

               mMouseButtonPressedDown) {

        mMouseButtonPressedDown = false;

        QGraphicsSceneMouseEvent *mouseEvent =

            static_cast<QGraphicsSceneMouseEvent*> (event);

        // check if mouse has moved DialpadCloseSwipeDistance vertically

        QPointF delta = mouseEvent->scenePos() -

                        mouseEvent->buttonDownScenePos(Qt::LeftButton);

        if (mOrientation==Qt::Vertical) {

            qreal height = geometry().height() * DialpadCloseSwipeDistanceV;

            if ( (delta.y() >= height) &&

                 (mSwipeTimer.elapsed() <= DialpadMaxSwipeTime)) {

                startCloseAnimation();

            }

        } else {

            qreal width = geometry().width() * DialpadCloseSwipeDistanceH;

            bool swipe = (layoutDirection()==Qt::LeftToRight &&

                          delta.x() >= width) ||

                         (layoutDirection()==Qt::RightToLeft &&

                          -delta.x() >= width);

            if ( swipe &&

                 (mSwipeTimer.elapsed() <= DialpadMaxSwipeTime)) {

                startCloseAnimation();

            }

        }

    }

    return false;

}

void Dialpad::startCloseAnimation()

{

    if (!mAnimationOngoing) {

        mCloseTimeLine.start();

        mAnimationOngoing = true;

   }

}

void Dialpad::showEvent(QShowEvent *event)

{

    HbWidget::showEvent(event);

    // for closing swipe gesture

    installSceneEventFilter(this);

    setFiltersChildEvents(true);

    if (mBackgroundItem) {

        layoutBackgroundItem();

        mBackgroundItem->show();

    }

}

void Dialpad::hideEvent(QHideEvent *event)

{

    HbWidget::hideEvent(event);

    setFiltersChildEvents(false);

    removeSceneEventFilter(this);

}

void Dialpad::closeEvent(QCloseEvent * event)

{

    mIsOpen = false;

    HbWidget::closeEvent(event);

    emit aboutToClose();

}

void Dialpad::closeAnimValueChanged(qreal value)

{

    QPointF currentPos = pos();

    QPointF newPos;

    if (mOrientation==Qt::Vertical) {

        qreal height = geometry().height();

        newPos.setX(currentPos.x());

        newPos.setY(mPosition.y()+(height*value));

    } else {

        qreal width = geometry().width();

        if (layoutDirection()==Qt::LeftToRight) {

            newPos.setY(currentPos.y());

            newPos.setX(mPosition.x()+(width*value));

        } else {

            newPos.setY(currentPos.y());

            newPos.setX(mPosition.x()-(width*value));

        }

    }

    setPos(newPos);

}

void Dialpad::closeAnimFinished()

{

    mAnimationOngoing = false;

    closeDialpad();

    setPos(mPosition);

}

void Dialpad::openAnimValueChanged(qreal value)

{

    QPointF currentPos = pos();

    QPointF newPos;

    if (mOrientation==Qt::Vertical) {

        qreal height = geometry().height();

        newPos.setX(currentPos.x());

        newPos.setY(mPosition.y()+(height*(1-value)));

    } else {

        qreal width = geometry().width();

        if (layoutDirection()==Qt::LeftToRight) {

            newPos.setY(currentPos.y());

            newPos.setX(mPosition.x()+(width*(1-value)));

        } else {

            newPos.setY(currentPos.y());

            newPos.setX(mPosition.x()-(width*(1-value)));

        }

    }

    setPos(newPos);

}

void Dialpad::openAnimFinished()

{

    mAnimationOngoing = false;    

    setPos(mPosition);      

}

void Dialpad::orientationChangeStarted()

{

    hide();

    // needs to re-create grid layout to get

    // scale with uniform item sizes

    mKeypad->createButtonGrid();

}

void Dialpad::orientationChangeFinished(Qt::Orientation current)

{

    updateLayout(current);

    show();

    mOrientation = current;

    mPosition = pos();

    if (mBackgroundItem) {

        layoutBackgroundItem();

    }

}

void Dialpad::layoutBackgroundItem()

{

    Q_ASSERT(mBackgroundItem);

    QRectF backgroundRect(mMainWindow.layoutRect());

    backgroundRect.adjust(0,mTitleBarHeight,0,0);

    mBackgroundItem->setRect(backgroundRect);

}

void Dialpad::updateLayout(Qt::Orientation orientation)

{

    Q_ASSERT(layout());

    qreal unit = HbDeviceProfile::current().unitValue();

    qreal margin = DialpadComponentMargin * unit;

    QGraphicsLinearLayout* mainLayout =

        static_cast<QGraphicsLinearLayout*>(layout());

    // close handle location changes, update margin values

    if (orientation==Qt::Vertical) {

        mainLayout->setContentsMargins(margin,

                                       mCloseHandleHeight,

                                       margin,

                                       margin);

    } else {

        mainLayout->setContentsMargins(mCloseHandleHeight,

                                       margin,

                                       margin,

                                       margin);

    }

}