/*
                             This file is part of the Opie Project
                             Copyright (C) Robert Griebl <sandman@handhelds.org>
              =.             Copyright (C) The Opie Team <opie-devel@handhelds.org>
            .=l.
           .>+-=
 _;:,     .>    :=|.         This program is free software; you can
.> <`_,   >  .   <=          redistribute it and/or  modify it under
:`=1 )Y*s>-.--   :           the terms of the GNU Library General Public
.="- .-=="i,     .._         License as published by the Free Software
 - .   .-<_>     .<>         Foundation; either version 2 of the License,
     ._= =}       :          or (at your option) any later version.
    .%`+i>       _;_.
    .i_,=:_.      -<s.       This program is distributed in the hope that
     +  .  -:.       =       it will be useful,  but WITHOUT ANY WARRANTY;
    : ..    .:,     . . .    without even the implied warranty of
    =_        +     =;=|`    MERCHANTABILITY or FITNESS FOR A
  _.=:.       :    :=>`:     PARTICULAR PURPOSE. See the GNU
..}^=.=       =       ;      Library General Public License for more
++=   -.     .`     .:       details.
 :     =  ...= . :.=-
 -.   .:....=;==+<;          You should have received a copy of the GNU
  -_. . .   )=.  =           Library General Public License along with
    --        :-=`           this library; see the file COPYING.LIB.
                             If not, write to the Free Software Foundation,
                             Inc., 59 Temple Place - Suite 330,
                             Boston, MA 02111-1307, USA.
*/

/* OPIE */
#include <opie2/ofontselector.h>
#include <qpe/fontdatabase.h>

/* QT */
#include <qlayout.h>
#include <qlistbox.h>
#include <qcombobox.h>
#include <qlabel.h>
#include <qmultilineedit.h>


/* TRANSLATOR Opie::Ui::OFontSelector */


namespace Opie {
namespace Ui   {
namespace Internal {

class OFontSelectorPrivate
{
public:
    QListBox *      m_font_family_list;
    QComboBox *     m_font_style_list;
    QComboBox *     m_font_size_list;
    QMultiLineEdit *m_preview;

    bool            m_pointbug : 1;

    FontDatabase    m_fdb;
};

class FontListItem : public QListBoxText
{
public:
    FontListItem ( const QString &t, const QStringList &styles, const QValueList<int> &sizes ) : QListBoxText()
    {
        m_name = t;
        m_styles = styles;
        m_sizes = sizes;

        QString str = t;
        str [0] = str [0]. upper();
        setText ( str );
    }

    QString family() const
    {
        return m_name;
    }

    const QStringList &styles() const
    {
        return m_styles;
    }

    const QValueList<int> &sizes() const
    {
        return m_sizes;
    }

private:
    QStringList m_styles;
    QValueList<int> m_sizes;
    QString m_name;
};
}
}
}


using namespace Opie::Ui;
using namespace Opie::Ui::Internal;

static int findItemCB( QComboBox *box, const QString &str )
{
    for ( int i = 0; i < box->count(); i++ )
    {
        if ( box->text ( i ) == str )
            return i;
    }
    return -1;
}

/* static same as anon. namespace */
static int qt_version()
{
    const char *qver = qVersion();

    return ( qver [0] - '0' ) * 100 + ( qver [2] - '0' ) * 10 + ( qver [4] - '0' );
}

/**
 * Constructs the Selector object
 * @param withpreview If a font preview should be given
 * @param parent The parent of the Font Selector
 * @param name The name of the object
 * @param fl WidgetFlags
 */
OFontSelector::OFontSelector( bool withpreview, QWidget *parent, const char *name, WFlags fl ) : QWidget ( parent, name, fl )
{
    d = new OFontSelectorPrivate();

    QGridLayout *gridLayout = new QGridLayout( this, 0, 0, 4, 4 );
    gridLayout->setRowStretch( 4, 10 );

    d->m_font_family_list = new QListBox( this, "FontListBox" );
    gridLayout->addMultiCellWidget( d->m_font_family_list, 0, 4, 0, 0 );
    connect( d->m_font_family_list, SIGNAL( highlighted(int) ), this, SLOT( fontFamilyClicked(int) ) );

    QLabel *label = new QLabel( tr( "Style" ), this );
    gridLayout->addWidget( label, 0, 1 );

    d->m_font_style_list = new QComboBox( this, "StyleListBox" );
    connect( d->m_font_style_list, SIGNAL(  activated(int) ), this, SLOT( fontStyleClicked(int) ) );
    gridLayout->addWidget( d->m_font_style_list, 1, 1 );

    label = new QLabel( tr( "Size" ), this );
    gridLayout->addWidget( label, 2, 1 );

    d->m_font_size_list = new QComboBox( this, "SizeListBox" );
    connect( d->m_font_size_list, SIGNAL(  activated(int) ),
             this, SLOT( fontSizeClicked(int) ) );
    gridLayout->addWidget( d->m_font_size_list, 3, 1 );

    d->m_pointbug = ( qt_version() == 232 || qt_version() == 233 ); // SharpROM uses 2.3.2

    if ( withpreview )
    {
        d->m_preview = new QMultiLineEdit ( this, "Preview" );
        d->m_preview->setAlignment ( AlignCenter );
        d->m_preview->setWordWrap ( QMultiLineEdit::WidgetWidth );
        d->m_preview->setMargin ( 3 );
        d->m_preview->setText ( tr( "The Quick Brown Fox Jumps Over The Lazy Dog" ));
        gridLayout->addRowSpacing ( 5, 4 );
        gridLayout->addMultiCellWidget ( d->m_preview, 6, 6, 0, 1 );
        gridLayout->setRowStretch ( 6, 5 );
    }
    else
        d->m_preview = 0;

    loadFonts ( d->m_font_family_list );
}

OFontSelector::~OFontSelector()
{
    delete d;
}

/**
 * This methods tries to set the font
 * @param f The wishes font
 * @return success or failure
 */
bool OFontSelector::setSelectedFont ( const QFont &f )
{
    return setSelectedFont ( f. family(), d->m_fdb. styleString ( f ), f. pointSize(), QFont::encodingName ( f. charSet()));
}


/**
 * This is an overloaded method @see setSelectedFont
 * @param familyStr The family of the font
 * @param styleStr The style of the font
 * @param sizeVal The size of font
 * @param charset The charset to be used. Will be deprecated by QT3
 */
bool OFontSelector::setSelectedFont( const QString &familyStr, const QString &styleStr, int sizeVal, const QString & charset )
{
    Q_CONST_UNUSED( charset )
    QString sizeStr = QString::number ( sizeVal );

    QListBoxItem *family = d->m_font_family_list->findItem ( familyStr );
    if ( !family )
        family = d->m_font_family_list->findItem ( "Helvetica" );
    if ( !family )
        family = d->m_font_family_list->firstItem();
    d->m_font_family_list->setCurrentItem ( family );
    fontFamilyClicked ( d->m_font_family_list->index ( family ));

    int style = findItemCB ( d->m_font_style_list, styleStr );
    if ( style < 0 )
        style = findItemCB ( d->m_font_style_list, "Regular" );
    if ( style < 0 && d->m_font_style_list->count() > 0 )
        style = 0;
    d->m_font_style_list->setCurrentItem ( style );
    fontStyleClicked ( style );

    int size = findItemCB ( d->m_font_size_list, sizeStr );
    if ( size < 0 )
        size = findItemCB ( d->m_font_size_list, "10" );
    if ( size < 0 && d->m_font_size_list->count() > 0 )
        size = 0;
    d->m_font_size_list->setCurrentItem ( size );
    fontSizeClicked ( size );

    return (( family ) && ( style >= 0 ) && ( size >= 0 ));
}

/**
 * This method returns the name, style and size of the currently selected
 * font or false if no font is selected
 * @param family The font family will be written there
 * @param style The style will be written there
 * @param size The size will be written there
 * @return success or failure
 */
bool OFontSelector::selectedFont ( QString &family, QString &style, int &size )
{
    QString dummy;
    return selectedFont ( family, style, size, dummy );
}


/**
 * This method does return the font family or QString::null if there is
 * no font item selected
 * @return the font family
 */
QString OFontSelector::fontFamily() const
{
    FontListItem *fli = (FontListItem *) d->m_font_family_list->item ( d->m_font_family_list->currentItem());

    return fli ? fli->family() : QString::null;
}

/**
 * This method will return the style of the font or QString::null
 * @return the style of the font
 */
QString OFontSelector::fontStyle() const
{
    FontListItem *fli = (FontListItem *) d->m_font_family_list->item ( d->m_font_family_list->currentItem());
    int fst = d->m_font_style_list->currentItem();

    return ( fli && fst >= 0 ) ? fli->styles() [fst] : QString::null;
}

/**
 * This method will return the font size or 10 if no font size is available
 */
int OFontSelector::fontSize() const
{
    FontListItem *fli = (FontListItem *) d->m_font_family_list->item ( d->m_font_family_list->currentItem());
    int fsi = d->m_font_size_list->currentItem();

    return ( fli && fsi >= 0 ) ? fli->sizes() [fsi] : 10;
}

/**
 * returns the charset of the font or QString::null
 */
QString OFontSelector::fontCharSet() const
{
    FontListItem *fli = (FontListItem *) d->m_font_family_list->item ( d->m_font_family_list->currentItem());

    return fli ? d->m_fdb. charSets ( fli->family()) [0] : QString::null;
}

/**
 * Overloaded member function see above
 * @see selectedFont
 */
bool OFontSelector::selectedFont ( QString &family, QString &style, int &size, QString &charset )
{
    int ffa = d->m_font_family_list->currentItem();
    int fst = d->m_font_style_list->currentItem();
    int fsi = d->m_font_size_list->currentItem();

    FontListItem *fli = (FontListItem *) d->m_font_family_list->item ( ffa );

    if ( fli )
    {
        family = fli->family();
        style = fst >= 0 ? fli->styles() [fst] : QString::null;
        size = fsi >= 0 ? fli->sizes() [fsi] : 10;
        charset = d->m_fdb. charSets ( fli->family()) [0];

        return true;
    }
    else
        return false;
}

void OFontSelector::loadFonts ( QListBox *list )
{
    QStringList f = d->m_fdb. families();

    for ( QStringList::ConstIterator it = f. begin(); it != f. end(); ++it )
    {
        QValueList <int> ps = d->m_fdb. pointSizes ( *it );

        if ( d->m_pointbug )
        {
            for ( QValueList <int>::Iterator it = ps. begin(); it != ps. end(); it++ )
                *it /= 10;
        }

        list->insertItem ( new FontListItem ( *it, d->m_fdb. styles ( *it ), ps ));
    }
}

void OFontSelector::fontFamilyClicked ( int index )
{
    QString oldstyle = d->m_font_style_list->currentText();
    QString oldsize  = d->m_font_size_list->currentText();

    FontListItem *fli = (FontListItem *) d->m_font_family_list->item ( index );

    d->m_font_style_list->clear();
    d->m_font_style_list->insertStringList ( fli->styles());
    d->m_font_style_list->setEnabled ( !fli->styles(). isEmpty());

    int i;

    i = findItemCB ( d->m_font_style_list, oldstyle );
    if ( i < 0 )
        i = findItemCB ( d->m_font_style_list, "Regular" );
    if (( i < 0 ) && ( d->m_font_style_list->count() > 0 ))
        i = 0;

    if ( i >= 0 )
    {
        d->m_font_style_list->setCurrentItem ( i );
        fontStyleClicked ( i );
    }

    d->m_font_size_list->clear();
    QValueList<int> sl = fli->sizes();

    for ( QValueList<int>::Iterator it = sl. begin(); it != sl. end(); ++it )
        d->m_font_size_list->insertItem ( QString::number ( *it ));

    i = findItemCB ( d->m_font_size_list, oldsize );
    if ( i < 0 )
        i = findItemCB ( d->m_font_size_list, "10" );
    if (( i < 0 ) && ( d->m_font_size_list->count() > 0 ))
        i = 0;

    if ( i >= 0 )
    {
        d->m_font_size_list->setCurrentItem ( i );
        fontSizeClicked ( i );
    }
    changeFont();
}

void OFontSelector::fontStyleClicked ( int /*index*/ )
{
    changeFont();
}

void OFontSelector::fontSizeClicked ( int /*index*/ )
{
    changeFont();
}

void OFontSelector::changeFont()
{
    QFont f = selectedFont();

    if ( d->m_preview )
        d->m_preview->setFont ( f );

    emit fontSelected ( f );
}

/**
 * Return the selected font
 */
QFont OFontSelector::selectedFont()
{
    int ffa = d->m_font_family_list->currentItem();
    int fst = d->m_font_style_list->currentItem();
    int fsi = d->m_font_size_list->currentItem();

    FontListItem *fli = (FontListItem *) d->m_font_family_list->item ( ffa );

    if ( fli )
    {
        return d->m_fdb. font ( fli->family(), \
                                 fst >= 0 ? fli->styles() [fst] : QString::null, \
                                 fsi >= 0 ? fli->sizes() [fsi] : 10, \
                                 d->m_fdb. charSets ( fli->family()) [0] );
    }
    else
        return QFont();
}

void OFontSelector::resizeEvent ( QResizeEvent *re )
{
    if ( d->m_preview )
    {
        d->m_preview->setMinimumHeight ( 1 );
        d->m_preview->setMaximumHeight ( 32767 );
    }

    QWidget::resizeEvent ( re );

    if ( d->m_preview )
        d->m_preview->setFixedHeight ( d->m_preview->height());

}