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/* This file is part of the KDE project
   Copyright (C) 1999 David Faure <faure@kde.org>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library 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., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/

#include <assert.h>

#include <tqcheckbox.h>
#include <tqlabel.h>
#include <tqlayout.h>
#include <tqwhatsthis.h>

#include <dcopclient.h>

#include <tdeapplication.h>
#include <kcolorbutton.h>
#include <tdeconfig.h>
#include <kdebug.h>
#include <tdefontcombo.h>
#include <tdefontdialog.h>
#include <klocale.h>
#include <konq_defaults.h> // include default values directly from konqueror

#include "fontopts.h"


//-----------------------------------------------------------------------------

KonqFontOptions::KonqFontOptions(TDEConfig *config, TQString group, bool desktop, TQWidget *parent, const char* /*name*/)
    : TDECModule( parent, "kcmkonq" ), g_pConfig(config), groupname(group), m_bDesktop(desktop)
{
    TQLabel *label;
    TQString wtstr;
    int row = 0;

    int LASTLINE = m_bDesktop ? 8 : 10; // this can be different :)
#define LASTCOLUMN 2
    TQGridLayout *lay = new TQGridLayout(this,LASTLINE+1,LASTCOLUMN+1, 0,
        KDialog::spacingHint());
    lay->setRowStretch(LASTLINE,10);
    lay->setColStretch(LASTCOLUMN,10);

    row++;

    m_pStandard = new TDEFontCombo( this );
    label = new TQLabel( m_pStandard, i18n("&Standard font:"), this );
    lay->addWidget(label,row,0);
    lay->addMultiCellWidget(m_pStandard,row,row,1,1);

    wtstr = i18n("This is the font used to display text in Konqueror windows.");
    TQWhatsThis::add( label, wtstr );
    TQWhatsThis::add( m_pStandard, wtstr );

    row++;
    connect( m_pStandard, TQT_SIGNAL( activated(const TQString&) ),
             TQT_SLOT( slotStandardFont(const TQString&) ) );
    connect( m_pStandard, TQT_SIGNAL( activated(const TQString&) ),
             TQT_SLOT(changed() ) );
    connect( m_pStandard, TQT_SIGNAL( textChanged(const TQString&) ),
             TQT_SLOT( slotStandardFont(const TQString&) ) );
    connect( m_pStandard, TQT_SIGNAL( textChanged(const TQString&) ),
             TQT_SLOT(changed() ) );

    m_pSize = new TQSpinBox( 4,18,1,this );
    label = new TQLabel( m_pSize, i18n("Font si&ze:"), this );
    lay->addWidget(label,row,0);
    lay->addMultiCellWidget(m_pSize,row,row,1,1);

    connect( m_pSize, TQT_SIGNAL( valueChanged(int) ),
             this, TQT_SLOT( slotFontSize(int) ) );
    row+=2;

    wtstr = i18n("This is the font size used to display text in Konqueror windows.");
    TQWhatsThis::add( label, wtstr );
    TQWhatsThis::add( m_pSize, wtstr );
    int hAlign = TQApplication::reverseLayout() ? AlignRight : AlignLeft;

    //
#define COLOR_BUTTON_COL 1
    m_pNormalText = new KColorButton( normalTextColor, this );
    label = new TQLabel( m_pNormalText, i18n("Normal te&xt color:"), this );
    lay->addWidget(label,row,0);
    lay->addWidget(m_pNormalText,row,COLOR_BUTTON_COL,(TQ_Alignment)hAlign);

    wtstr = i18n("This is the color used to display text in Konqueror windows.");
    TQWhatsThis::add( label, wtstr );
    TQWhatsThis::add( m_pNormalText, wtstr );

    connect( m_pNormalText, TQT_SIGNAL( changed( const TQColor & ) ),
             TQT_SLOT( slotNormalTextColorChanged( const TQColor & ) ) );

    /*
    row++;
    label = new TQLabel( i18n("Highlighted text color:"), this );
    lay->addWidget(label,row,0);

    m_pHighlightedText = new KColorButton( highlightedTextColor, this );
    lay->addWidget(m_pHighlightedText,row,COLOR_BUTTON_COL,hAlign);

    wtstr = i18n("This is the color used to display selected text in Konqueror windows.");
    TQWhatsThis::add( label, wtstr );
    TQWhatsThis::add( m_pHighlightedText, wtstr );

    connect( m_pHighlightedText, TQT_SIGNAL( changed( const TQColor & ) ),
             TQT_SLOT( slotHighlightedTextColorChanged( const TQColor & ) ) );
    */

    row++;

    if ( m_bDesktop )
    {
        m_cbTextBackground = new TQCheckBox( i18n("&Text background color:"), this );
        lay->addWidget(m_cbTextBackground,row,0);
        connect( m_cbTextBackground, TQT_SIGNAL( clicked() ),
                 TQT_SLOT( slotTextBackgroundClicked() ) );

        m_pTextBackground = new KColorButton( textBackgroundColor, this );
        lay->addWidget(m_pTextBackground,row,COLOR_BUTTON_COL,(TQ_Alignment)hAlign);

        wtstr = i18n("This is the color used behind the text for the icons on the desktop.");
        TQWhatsThis::add( label, wtstr );
        TQWhatsThis::add( m_pTextBackground, wtstr );

        connect( m_pTextBackground, TQT_SIGNAL( changed( const TQColor & ) ),
                 TQT_SLOT( slotTextBackgroundColorChanged( const TQColor & ) ) );

        row++;
    }
    else
    {
        m_pNbLines = new TQSpinBox( 1, 10, 1, this );
        TQLabel* label = new TQLabel( m_pNbLines, i18n("H&eight for icon text:"), this );
        lay->addWidget( label, row, 0 );
        lay->addWidget( m_pNbLines, row, 1 );
        connect( m_pNbLines, TQT_SIGNAL( valueChanged(int) ),
                 this, TQT_SLOT( changed() ) );
        connect( m_pNbLines, TQT_SIGNAL( valueChanged(int) ),
                 TQT_SLOT( slotPNbLinesChanged(int)) );

        TQString thwt = i18n("This is the maximum number of lines that can be"
                            " used to draw icon text. Long file names are"
                            " truncated at the end of the last line.");
        TQWhatsThis::add( label, thwt );
        TQWhatsThis::add( m_pNbLines, thwt );

        row++;

        // width for the items in multicolumn icon view
        m_pNbWidth = new TQSpinBox( 1, 100000, 1, this );

        label = new TQLabel( m_pNbWidth, i18n("&Width for icon text:"), this );
        lay->addWidget( label, row, 0 );
        lay->addWidget( m_pNbWidth, row, 1 );
        connect( m_pNbWidth, TQT_SIGNAL( valueChanged(int) ),
                 this, TQT_SLOT( changed() ) );
        connect( m_pNbWidth, TQT_SIGNAL( valueChanged(int) ),
                 TQT_SLOT( slotPNbWidthChanged(int)) );

        thwt = i18n( "This is the maximum width for the icon text when konqueror "
                     "is used in multi column view mode." );
        TQWhatsThis::add( label, thwt );
        TQWhatsThis::add( m_pNbWidth, thwt );

        row++;
    }

    cbUnderline = new TQCheckBox(i18n("&Underline filenames"), this);
    lay->addMultiCellWidget(cbUnderline,row,row,0,LASTCOLUMN,(TQ_Alignment)hAlign);
    connect(cbUnderline, TQT_SIGNAL(clicked()), this, TQT_SLOT(changed()));

    TQWhatsThis::add( cbUnderline, i18n("Checking this option will result in filenames"
                                       " being underlined, so that they look like links on a web page. Note:"
                                       " to complete the analogy, make sure that single click activation is"
                                       " enabled in the mouse control module.") );

    if ( !m_bDesktop )
    {
        row++;

        m_pSizeInBytes = new TQCheckBox(i18n("Display file sizes in b&ytes"), this);
        lay->addMultiCellWidget( m_pSizeInBytes,row,row,0,LASTCOLUMN,(TQ_Alignment)hAlign );
        connect( m_pSizeInBytes, TQT_SIGNAL(clicked()), this, TQT_SLOT(changed()) );

        TQWhatsThis::add( m_pSizeInBytes, i18n("Checking this option will result in file sizes"
                                              " being displayed in bytes. Otherwise file sizes are"
                                              " being displayed in kilobytes or megabytes if appropriate.") );
    }
    row++;

    assert( row == LASTLINE-1 );
    // The last line is empty and grows if resized

    load();
}

void KonqFontOptions::slotFontSize(int i)
{
    m_fSize = i;
    changed();
}

void KonqFontOptions::slotStandardFont(const TQString& n )
{
    m_stdName = n;
}

void KonqFontOptions::slotPNbLinesChanged(int value)
{
    m_pNbLines->setSuffix( i18n( " line", " lines", value ) );
}

void KonqFontOptions::slotPNbWidthChanged(int value)
{
    m_pNbWidth->setSuffix( i18n( " pixel", " pixels", value ) );
}

void KonqFontOptions::load()
{
	load( false );
}

void KonqFontOptions::load( bool useDefaults )
{
	 g_pConfig->setReadDefaults( useDefaults );

	 g_pConfig->setGroup(groupname);

    TQFont stdFont = g_pConfig->readFontEntry( "StandardFont" );
    m_stdName = stdFont.family();
    m_fSize = stdFont.pointSize();
    // we have to use TQFontInfo, in case the font was specified with a pixel size
    if ( m_fSize == -1 )
        m_fSize = TQFontInfo(stdFont).pointSize();

    normalTextColor = TDEGlobalSettings::textColor();
    normalTextColor = g_pConfig->readColorEntry( "NormalTextColor", &normalTextColor );
    m_pNormalText->setColor( normalTextColor );

    /* highlightedTextColor = TDEGlobalSettings::highlightedTextColor();
    highlightedTextColor = g_pConfig->readColorEntry( "HighlightedTextColor", &highlightedTextColor );
    m_pHighlightedText->setColor( highlightedTextColor );
    */

    if ( m_bDesktop )
    {
        textBackgroundColor = g_pConfig->readColorEntry( "ItemTextBackground" );
        m_cbTextBackground->setChecked(textBackgroundColor.isValid());
        m_pTextBackground->setEnabled(textBackgroundColor.isValid());
        m_pTextBackground->setColor( textBackgroundColor );
	// Don't keep an invalid color around, otherwise checking the checkbox still gives invalid.
	if ( !textBackgroundColor.isValid() )
            textBackgroundColor = Qt::black;
    }
    else
    {
        int n = g_pConfig->readNumEntry( "TextHeight", 0 );
        if ( n == 0 ) {
            if ( g_pConfig->readBoolEntry( "WordWrapText", true ) )
                n = DEFAULT_TEXTHEIGHT;
            else
                n = 1;
        }
        m_pNbLines->setValue( n );

        n = g_pConfig->readNumEntry( "TextWidth", DEFAULT_TEXTWIDTH_MULTICOLUMN );
        m_pNbWidth->setValue( n );

        m_pSizeInBytes->setChecked( g_pConfig->readBoolEntry( "DisplayFileSizeInBytes", DEFAULT_FILESIZEINBYTES ) );
    }
    cbUnderline->setChecked( g_pConfig->readBoolEntry("UnderlineLinks", DEFAULT_UNDERLINELINKS ) );

    TDEConfig cfg("kdeglobals");
    cfg.setGroup("DesktopIcons");

    updateGUI();
    emit changed( useDefaults );
}

void KonqFontOptions::defaults()
{
	load( true );
}

void KonqFontOptions::updateGUI()
{
    if ( m_stdName.isEmpty() )
        m_stdName = TDEGlobalSettings::generalFont().family();

    m_pStandard->setCurrentFont( m_stdName );
    m_pSize->setValue( m_fSize );
}

void KonqFontOptions::save()
{
    g_pConfig->setGroup(groupname);

    TQFont stdFont( m_stdName, m_fSize );
    g_pConfig->writeEntry( "StandardFont", stdFont );

    g_pConfig->writeEntry( "NormalTextColor", normalTextColor );
    //g_pConfig->writeEntry( "HighlightedTextColor", highlightedTextColor );
    if ( m_bDesktop )
        g_pConfig->writeEntry( "ItemTextBackground", m_cbTextBackground->isChecked() ? textBackgroundColor : TQColor());
    else
    {
        g_pConfig->writeEntry( "TextHeight", m_pNbLines->value() );
        g_pConfig->writeEntry( "TextWidth", m_pNbWidth->value() );
        g_pConfig->writeEntry( "DisplayFileSizeInBytes", m_pSizeInBytes->isChecked() );
    }
    g_pConfig->writeEntry( "UnderlineLinks", cbUnderline->isChecked() );
    g_pConfig->sync();

    TDEConfig cfg("kdeglobals");
    cfg.setGroup("DesktopIcons");

    // Send signal to konqueror
    // Warning. In case something is added/changed here, keep kfmclient in sync
    TQByteArray data;
    if ( !kapp->dcopClient()->isAttached() )
      kapp->dcopClient()->attach();
    kapp->dcopClient()->send( "konqueror*", "KonquerorIface", "reparseConfiguration()", data );

    // Tell kdesktop about the new config file
    int konq_screen_number = TDEApplication::desktop()->primaryScreen();
    TQCString appname;
    if (konq_screen_number == 0)
        appname = "kdesktop";
    else
        appname.sprintf("kdesktop-screen-%d", konq_screen_number);
    kapp->dcopClient()->send( appname, "KDesktopIface", "configure()", data );
}

void KonqFontOptions::slotTextBackgroundClicked()
{
    m_pTextBackground->setEnabled( m_cbTextBackground->isChecked() );
    changed();
}

void KonqFontOptions::slotNormalTextColorChanged( const TQColor &col )
{
    if ( normalTextColor != col )
    {
        normalTextColor = col;
        changed();
    }
}

/*
void KonqFontOptions::slotHighlightedTextColorChanged( const TQColor &col )
{
    if ( highlightedTextColor != col )
    {
        highlightedTextColor = col;
        changed();
    }
}
*/

void KonqFontOptions::slotTextBackgroundColorChanged( const TQColor &col )
{
    if ( textBackgroundColor != col )
    {
        textBackgroundColor = col;
        changed();
    }
}

TQString KonqFontOptions::quickHelp() const
{
    return i18n("<h1>Appearance</h1> You can configure how Konqueror looks as a file manager here.");
}

#include "fontopts.moc"