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/*
 *  This file is part of the KDE libraries
 *  Copyright (c) 2001-2002 Michael Goffioul <tdeprint@swing.be>
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Library General Public
 *  License version 2 as published by the Free Software Foundation.
 *
 *  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 "kpposterpage.h"
#include "posterpreview.h"
#include "kprinter.h"
#include "kmfactory.h"
#include "util.h"

#include <tqcheckbox.h>
#include <tqcombobox.h>
#include <tqlabel.h>
#include <layout.h>
#include <tqtooltip.h>
#include <tqlineedit.h>
#include <tqwhatsthis.h>
#include <kpushbutton.h>
#include <klocale.h>
#include <knuminput.h>
#include <kiconloader.h>

KPPosterPage::KPPosterPage( TQWidget *parent, const char *name )
	: KPrintDialogPage( parent, name )
{
        //WhatsThis strings.... (added by pfeifle@kde.org)
	TQString whatsThis5_PosterPage = i18n( " <qt> "
			" 5. "
			" </qt>" );

	TQString whatsThisEnablePosterPage = i18n( " <qt> "
                        " <b>Print Poster</b> (enabled or disabled). "
			" <p>If you enable this option, you can print posters of different sizes "
			" The printout will happen in the form <em>'tiles'</em> printed on smaller "
			" paper sizes, which you can stitch together later. <em>If you enable this "
			" option here, the <em>'Poster Printing' filter</em> will be auto-loaded in "
			" the 'Filters' tab of this dialog. </p>"
			" <p>This tab is only visible if the external <em>'poster'</em> utility is "
			" discovered by KDEPrint on your system. [<em>'poster'</em> is a commandline "
			" utility that enables you to convert PostScript files into tiled printouts "
			" which allow for oversized appearance of the stitched-together tiles.] </p>"
			" <p><b>Note:</b> The standard version of 'poster' will not work. Your system "
			" must use a patched version of 'poster'. Ask your operating system vendor to "
			" provide a patched version of 'poster' if he does not already. </p>"
			" <p><b>Additional hint for power users:</b> A patched version of 'poster' is "
			" available from the <a href=\"http://printing.kde.org/\">KDEPrint Website</a> "
			" at <a href=\"http://printing.kde.org/downloads/\">http://printing.kde.org/downloads/</a>. "
			" The direct link to the patched source tarball is "
			" <a href=\"ftp://ftp.kde.org/pub/kde/printing/poster.tar.bz2\">ftp://ftp.kde.org/pub/kde/printing/poster.tar.bz2</a> "
			" </p> "
			" </qt>" );

	TQString whatsThisTileSelectionPosterPage = i18n( " <qt> "
                        " <b>Tile Selection widget</b> "
			" <p>This GUI element is <em>not only for viewing</em> your selections: it also "
			" lets you interactively select the tile(s) you want to print. "
			" </p>"
			" <p><b>Hints</b> "
			" <ul> "
			" <li>Click any tile to select it for printing.</li> "
			" <li>To select multiple tiles to be printed "
			" at once, <em>'shift-click'</em> on the tiles ('shift-click' means: hold down the "
			" [SHIFT]-key on your keyboard and click with the mouse while [SHIFT]-key is held.)  "
			" <em>Be aware</em> that the order "
			" of your clicking is also significant to the order of printing the different tiles. </li>"
			" </ul> "
			" <b>Note 1:</b> The order of your selection (and the order for printout of the tiles) "
			" is indicated by the contents of the text field below, "
			" labelled as <em>'Tile pages (to be printed):'</em><p>"
			" <b>Note 2:</b> By default no tile is selected. Before you can print (a part "
			" of) your poster, you must select at least one tile. </p> "
			" </qt>" );

	TQString whatsThisPostersizePosterPage = i18n( " <qt> "
                        " <b>Poster Size</b> "
			" <p>Select the poster size you want from the dropdown list. </p> "
			" Available sizes are all standard paper sizes up to "
			" 'A0'. [A0 is the same size as 16 sheets of A4, or '84cm x 118.2cm'.] </p> "
			" <p><b>Notice</b>, how the little preview window below changes with your change of poster "
			" size. It indicates to you how many tiles need to be printed to make the poster, "
			" given the selected paper size.</p>  "
			" <p><b>Hint:</b> The little preview window below is not just a passive icon. You can click "
			" on its individual tiles to select them for printing. To select multiple tiles to be printed "
			" at once, you need to <em>'shift-click'</em> on the tiles ('shift-click' means: hold down the "
			" [SHIFT]-key on your keyboard and click with the mouse while [SHIFT]-key is held.) The order "
			" of your clicking is significant to the order of printing the different tiles. The order of "
			" your selection (and for the printed tiles) is indicated by the contents of the text field "
			" labelled as <em>'Tile pages (to be printed):'</em><p>"
			" <b>Note:</b> By default no tile is selected. Before you can print (a part "
			" of) your poster, you must select at least one tile. </p> "
			" </qt>" );

	TQString whatsThisPrintsizePosterPage = i18n( " <qt> "
                        " <b>Paper Size</b> "
			" <p>This field indicates the paper size the poster tiles will be printed on. "
			" To select a different paper size for your poster tiles, go to the 'General' tab "
			" of this dialog and select one from the dropdown list. </p> "
			" Available sizes are most standard paper sizes supported by your printer. Your printer's "
			" supported paper sizes are read from the printer driver info (as laid down in the <em>'PPD'</em>, "
			" the printer description file). <em>Be aware that the 'Paper Size' selected may not be supported "
			" by 'poster' (example: 'HalfLetter') while it may well be supported by your printer.</em>  If "
			" you hit that obstacle, simply use another, supported Paper Size, like 'A4' or 'Letter'. "
			" <p><b>Notice</b>, how the little preview window below changes with your change of paper "
			" size. It indicates how many tiles need to be printed to make up the poster, "
			" given the selected paper and poster size.</p>  "
			" <p><b>Hint:</b> The little preview window below is not just a passive icon. You can click "
			" on its individual tiles to select them for printing. To select multiple tiles to be printed "
			" at once, you need to <em>'shift-click'</em> on the tiles ('shift-click' means: hold down the "
			" [SHIFT]-key on your keyboard and click with the mouse while [SHIFT]-key is held.) The order "
			" of your clicking is significant to the order of printing the different tiles. The order of "
			" your selection (and for the printed tiles) is indicated by the contents of the text field "
			" labelled as <em>'Tile pages (to be printed):'</em><p>"
			" <b>Note:</b> By default no tile is selected. Before you can print (a part "
			" of) your poster, you must select at least one tile. </p> "
			" </qt>" );

	TQString whatsThisCutmarginPosterPage = i18n( " <qt> "
                        " <b>Cut Margin selection</b> "
			" <p>Slider and spinbox let you determine a <em>'cut margin'</em> which will be printed onto "
			" each tile of your poster to help you cut the pieces as needed. </p>"
			" <p><b>Notice</b>, how the little preview window above changes with your change of cut "
			" margins. It indicates to you how much space the cut margins will take away from each tile. "
			" <p><b>Be aware</b>, that your cut margins need to be equal to or greater than the margins your "
			" printer uses. The printer's capabilities are described in the <em>'ImageableArea'</em> "
			" keywords of its driver PPD file. </p> "
			" </qt>" );

	TQString whatsThisTileOrderSelectionPosterPage = i18n( " <qt> "
                        " <b>Order and number of tile pages to be printed</b> "
			" <p>This field displays and sets the individual tiles to be printed, as well as the order "
			" for their printout. </p> "
			" You can file the field with 2 different methods: "
			" <ul> "
			" <li>Either use the interactive thumbnail preview above and '[SHIFT]-click' on the tiles. </li> "
			" <li>Or edit this text field accordingly. </li> "
			" </ul> "
			" <p>When editing the field, you can use a '3-7' syntax instead of a '3,4,5,6,7' one. </p> "
			" <p><b>Examples:</b></p> "
			" <pre> "
			"   \"2,3,7,9,3\" "
			" <br> "
			"   \"1-3,6,8-11\" "
			" </qt>" );

	setTitle( i18n( "Poster" ) );

	m_postercheck = new TQCheckBox( i18n( "&Print poster" ), this );
          TQWhatsThis::add(m_postercheck, whatsThisEnablePosterPage);
	TQWidget *dummy = new TQWidget( this );
	m_preview = new PosterPreview( dummy );
          TQWhatsThis::add(m_preview, whatsThisTileSelectionPosterPage);
	m_postersize = new TQComboBox( dummy );
          TQWhatsThis::add(m_postersize, whatsThisPostersizePosterPage);
	m_printsize = new TQComboBox( dummy );
          TQWhatsThis::add(m_printsize, whatsThisPrintsizePosterPage);
	m_lockbtn = new KPushButton( dummy );
          //TQWhatsThis::add(m_lockbtn, whatsThis5_PosterPage);           //FIXME ASK_MICHAEL: which pushbutton would that be?
	m_mediasize = new TQLabel( dummy );
          TQWhatsThis::add(m_mediasize, whatsThisPrintsizePosterPage);
	m_mediasize->setFrameStyle( TQFrame::Panel|TQFrame::Sunken );
	TQLabel *posterlab = new TQLabel( i18n( "Poste&r size:" ), dummy );
          TQWhatsThis::add(posterlab, whatsThisPostersizePosterPage);
	TQLabel *medialab = new TQLabel( i18n( "Media size:" ), dummy );
          TQWhatsThis::add(medialab, whatsThisPrintsizePosterPage);
	TQLabel *printlab = new TQLabel( i18n( "Pri&nt size:" ), dummy );
          TQWhatsThis::add(printlab, whatsThisPrintsizePosterPage);
	posterlab->setBuddy( m_postersize );
	printlab->setBuddy( m_printsize );
	m_cutmargin = new KIntNumInput( 5, dummy );
          TQWhatsThis::add(m_cutmargin, whatsThisCutmarginPosterPage);
	// xgettext:no-c-format
	m_cutmargin->setLabel( i18n( "C&ut margin (% of media):" ) );
	m_cutmargin->setRange( 0, 100, 2, true );                     // step width was too big, changed from 10 to 2 (-kp-)
	m_selection = new TQLineEdit( dummy );
          TQWhatsThis::add(m_selection, whatsThisTileOrderSelectionPosterPage);
	TQLabel *selectionlab = new TQLabel( i18n( "&Tile pages (to be printed):" ), dummy );
          TQWhatsThis::add(selectionlab, whatsThisTileOrderSelectionPosterPage);
	selectionlab->setBuddy( m_selection );
	m_lockbtn->setToggleButton( true );
	m_lockbtn->setPixmap( SmallIcon( "encrypted" ) );
	m_lockbtn->setOn( true );
	m_lockbtn->setFixedSize( m_lockbtn->sizeHint() );
	TQToolTip::add( m_lockbtn, i18n( "Link/unlink poster and print size" ) );

	for ( int i=0; i<KPrinter::NPageSize-1; i++ )
	{
		m_postersize->insertItem( page_sizes[ i ].text );
		m_printsize->insertItem( page_sizes[ i ].text );
	}
	m_postersize->setCurrentItem( findIndex( KPrinter::A3 ) );
	slotPosterSizeChanged( m_postersize->currentItem() );

	connect( m_postercheck, TQT_SIGNAL( toggled( bool ) ), dummy, TQT_SLOT( setEnabled( bool ) ) );
	dummy->setEnabled( false );
	connect( m_postersize, TQT_SIGNAL( activated( int ) ), TQT_SLOT( slotPosterSizeChanged( int ) ) );
	connect( m_cutmargin, TQT_SIGNAL( valueChanged( int ) ), TQT_SLOT( slotMarginChanged( int ) ) );
	connect( m_lockbtn, TQT_SIGNAL( toggled( bool ) ), m_printsize, TQT_SLOT( setDisabled( bool ) ) );
	m_printsize->setEnabled( false );
	connect( m_lockbtn, TQT_SIGNAL( toggled( bool ) ), TQT_SLOT( slotLockToggled( bool ) ) );
	connect( m_selection, TQT_SIGNAL( textChanged( const TQString& ) ), m_preview, TQT_SLOT( setSelectedPages( const TQString& ) ) );
	connect( m_preview, TQT_SIGNAL( selectionChanged( const TQString& ) ), m_selection, TQT_SLOT( setText( const TQString& ) ) );

	if ( KMFactory::self()->settings()->application != KPrinter::Dialog 
			&& KMFactory::self()->settings()->application >= 0 )
	{
		m_printsize->hide();
		m_lockbtn->hide();
		printlab->hide();
	}

	TQVBoxLayout *l0 = new TQVBoxLayout( this, 0, 10 );
	l0->addWidget( m_postercheck );
	l0->addWidget( dummy, 1 );
	TQGridLayout *l1 = new TQGridLayout( dummy, 8, 3, 0, 5 );
	l1->addWidget( posterlab, 0, 0 );
	l1->addWidget( m_postersize, 0, 1 );
	l1->addWidget( printlab, 1, 0 );
	l1->addWidget( m_printsize, 1, 1 );
	l1->addWidget( medialab, 2, 0 );
	l1->addWidget( m_mediasize, 2, 1 );
	l1->addMultiCellWidget( m_preview, 4, 4, 0, 2 );
	l1->addMultiCellWidget( m_cutmargin, 6, 6, 0, 2 );
	l1->addMultiCellWidget( m_lockbtn, 0, 1, 2, 2 );
	TQHBoxLayout *l2 = new TQHBoxLayout( 0, 0, 5 );
	l1->addMultiCellLayout( l2, 7, 7, 0, 2 );
	l2->addWidget( selectionlab );
	l2->addWidget( m_selection );
	l1->setColStretch( 1, 1 );
	l1->setRowStretch( 4, 1 );
	l1->addRowSpacing( 3, 10 );
	l1->addRowSpacing( 5, 10 );
}

KPPosterPage::~KPPosterPage()
{
}

void KPPosterPage::setOptions( const TQMap<TQString,TQString>& opts )
{
	TQString ps = opts[ "PageSize" ];
	if ( ps.isEmpty() && !opts[ "kde-pagesize" ].isEmpty() )
	{
		ps = pageSizeToPageName( ( KPrinter::PageSize )opts[ "kde-pagesize" ].toInt() );
		if ( ps.isEmpty() )
			ps = opts[ "_kde-poster-media" ];
	}
	if ( ps.isEmpty() )
		m_mediasize->setText( i18n( "Unknown" ) );
	else
		m_mediasize->setText( ps );
	m_preview->setMediaSize( ps );

	if ( opts[ "_kde-filters" ].find( "poster" ) != -1 )
	{
		m_postercheck->setChecked( true );
		ps = opts[ "_kde-poster-size" ];
		TQString prtsize = opts[ "kde-printsize" ];
		if ( !ps.isEmpty() )
		{
			m_postersize->setCurrentItem( findIndex( pageNameToPageSize( ps ) ) );
			m_lockbtn->setOn( !prtsize.isEmpty() && 
					page_sizes[ m_postersize->currentItem() ].ID == prtsize.toInt() );
			if ( !m_lockbtn->isOn() )
				m_printsize->setCurrentItem( findIndex( prtsize.toInt() ) );
			slotPosterSizeChanged( m_postersize->currentItem() );
		}
		if ( !opts[ "_kde-poster-cut" ].isEmpty() )
			m_cutmargin->setValue( opts[ "_kde-poster-cut" ].toInt() );
		m_selection->setText( opts[ "_kde-poster-select" ] );
	}
	else
		m_postercheck->setChecked( false );
}

void KPPosterPage::getOptions( TQMap<TQString,TQString>& opts, bool )
{
	TQStringList o = TQStringList::split( ",", opts[ "_kde-filters" ], false );
	if ( !m_postercheck->isChecked() )
	{
		o.remove( "poster" );
		opts[ "_kde-filters" ] = o.join( "," );
		opts.remove( "_kde-poster-media" );
		opts.remove( "_kde-poster-size" );
		opts.remove( "_kde-poster-cut" );
		opts.remove( "kde-printsize" );
		opts.remove( "_kde-poster-select" );
	}
	else
	{
		if ( !o.contains( "poster" ) )
			o.append( "poster" );
		opts[ "_kde-filters" ] = o.join( "," );
		opts[ "_kde-poster-media" ] = m_mediasize->text();
		opts[ "_kde-poster-size" ] = pageSizeToPageName( ( KPrinter::PageSize )page_sizes[ m_postersize->currentItem() ].ID );
		opts[ "kde-printsize" ] = TQString::number( page_sizes[ m_printsize->currentItem() ].ID );
		opts[ "_kde-poster-cut" ] = TQString::number( m_cutmargin->value() );
		opts[ "_kde-poster-select" ] = m_selection->text().stripWhiteSpace();
	}
}

bool KPPosterPage::isValid()
{
	return true;
}

void KPPosterPage::slotPosterSizeChanged( int value )
{
	int ID = page_sizes[ m_postersize->currentItem() ].ID;
	m_preview->setPosterSize( ID );
	if ( m_lockbtn->isOn() )
		m_printsize->setCurrentItem( value );
}

void KPPosterPage::slotMarginChanged( int value )
{
	m_preview->setCutMargin( value );
}

void KPPosterPage::slotLockToggled( bool on )
{
	m_lockbtn->setPixmap( SmallIcon( on ? "encrypted" : "decrypted" ) );
	if ( on )
		m_printsize->setCurrentItem( m_postersize->currentItem() );
}

#include "kpposterpage.moc"