/*!

* 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: Implements grid of numeric buttons

*

*/

#ifndef DIALPADNUMERICBUTTONGRID_H

#define DIALPADNUMERICBUTTONGRID_H

#include <QTextLayout>

#include <QColor>

#include <hbinputbuttongroup.h>

class DialpadNumericButton;

class DialpadNumericButtonGrid : public HbInputButtonGroup

{

    Q_OBJECT

public:

    explicit DialpadNumericButtonGrid(

        const HbMainWindow& mainWindow,

        QGraphicsItem* parent=0);

    ~DialpadNumericButtonGrid();

public:

    void resetButtons();

    QChar inputCharacter(int keyCode) const;

protected slots:

    void setButtonTexts();

    void updateButtonLabels();

    void cancelButtonPress();

protected:

    inline DialpadNumericButton* button(int i) const;

    void updateColorArray();

    void updateIconColor();

    void updateTextLayouts(const QSizeF &size);

    void resolveTextContent(QList<QString> &content, bool& useTwoRows);

    void createTextLayouts(const QSizeF &size,

                           const QList<QString> &content,

                           bool useTwoRows);

    void layoutTextLines(const QSizeF &size,

                         QTextLayout &textLayout,

                         int state,

                         int type,

                         bool useTwoRows);

    inline void layoutPrimaryText(

        QTextLayout& layout,

        DialpadNumericButton& button,

        qreal cellWidth,

        qreal cellHeight,

        qreal textHeight) const;

    inline void layoutSecondaryText(

        QTextLayout& layout,

        DialpadNumericButton& button,

        qreal cellWidth,

        qreal cellHeight,

        qreal textHeight,

        qreal textDescent,

        bool useTwoRows) const;

    bool isButtonPressed() const;

    void updateIconSizes();

protected:

    void paint(QPainter* painter,

               const QStyleOptionGraphicsItem* option,

               QWidget* widget);

    void setGeometry(const QRectF &rect);

    void changeEvent(QEvent *event);

private:

    enum ButtonState {

        Normal = 0,

        Pressed,

        StateCount

    };

    enum TextType {

        PrimaryText = 0,

        SecondaryText,

        TextTypeCount

    };

private:

    const HbMainWindow& mMainWindow;

    QList<QColor> mColors;

    QList<QTextLayout*> mTextLayouts;

    qreal mUnit;

    qreal mMaxPrimaryLineWidth;

    qreal mPrimaryTextBaseline;

    QMap<int,QChar> mGeneratedChar;

};

#endif // DIALPADNUMERICBUTTONGRID_H