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Diffstat (limited to 'kdeprint/posterpreview.cpp')
| -rw-r--r-- | kdeprint/posterpreview.cpp | 294 |
1 files changed, 294 insertions, 0 deletions
diff --git a/kdeprint/posterpreview.cpp b/kdeprint/posterpreview.cpp new file mode 100644 index 000000000..1a89ee8f3 --- /dev/null +++ b/kdeprint/posterpreview.cpp @@ -0,0 +1,294 @@ +/* + * This file is part of the KDE libraries + * Copyright (c) 2001-2002 Michael Goffioul <kdeprint@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 "posterpreview.h" + +#include <kprocess.h> +#include <qpainter.h> +#include <qsimplerichtext.h> +#include <qtimer.h> +#include <qpixmap.h> +#include <kprinter.h> +#include <klocale.h> +#include <kcursor.h> +#include <kglobalsettings.h> + +PosterPreview::PosterPreview( QWidget *parent, const char *name ) + : QFrame( parent, name ) +{ + m_postersize = m_mediasize = "A4"; + m_cutmargin = 5; + init(); +} + +PosterPreview::PosterPreview( const QString& postersize, const QString& mediasize, QWidget *parent, const char *name ) + : QFrame( parent, name ) +{ + m_postersize = postersize; + m_mediasize = mediasize; + m_cutmargin = 5; + init(); +} + +PosterPreview::~PosterPreview() +{ + delete m_process; +} + +void PosterPreview::init() +{ + m_process = new KProcess; + connect( m_process, SIGNAL( receivedStderr( KProcess*, char*, int ) ), SLOT( slotProcessStderr( KProcess*, char*, int ) ) ); + connect( m_process, SIGNAL( processExited( KProcess* ) ), SLOT( slotProcessExited( KProcess* ) ) ); + + m_cols = m_rows = m_pw = m_ph = m_mw = m_mh = 0; + m_dirty = false; + setDirty(); + setMouseTracking( true ); + setBackgroundMode( Qt::NoBackground ); +} + +void PosterPreview::parseBuffer() +{ + int rotate; + float pw, ph, mw, mh; + float x1, x2, y1, y2; + sscanf( m_buffer.ascii(), "%d %d %d %g %g %g %g %g %g %g %g", &m_rows, &m_cols, &rotate, + &pw, &ph, &mw, &mh, &x1, &y1, &x2, &y2 ); + m_pw = ( int )( rotate ? ph : pw ); + m_ph = ( int )( rotate ? pw : ph ); + m_mw = ( int )( rotate ? mh : mw ); + m_mh = ( int )( rotate ? mw : mh ); + m_posterbb.setCoords( ( int )x1, ( int )y1, ( int )x2, ( int )y2 ); +} + +void PosterPreview::setDirty() +{ + if ( !m_dirty ) + { + m_dirty = true; + QTimer::singleShot( 1, this, SLOT( updatePoster() ) ); + } +} + +void PosterPreview::updatePoster() +{ + m_buffer = ""; + m_process->clearArguments(); + *m_process << "poster" << "-F" << "-m" + m_mediasize << "-p" + m_postersize + << "-c" + QString::number( m_cutmargin ) + "%"; + if ( !m_process->start( KProcess::NotifyOnExit, KProcess::Stderr ) ) + { + m_rows = m_cols = 0; + m_dirty = false; + update(); + } +} + +void PosterPreview::drawContents( QPainter *painter ) +{ + QPixmap pix( width(), height() ); + QPainter *p = new QPainter( &pix ); + + p->fillRect( 0, 0, width(), height(), colorGroup().background() ); + + if ( isEnabled() ) + { + if ( m_rows <= 0 || m_cols <= 0 || m_pw <= 0 || m_ph <= 0 ) + { + QString txt = i18n( "Poster preview not available. Either the <b>poster</b> " + "executable is not properly installed, or you don't have " + "the required version; available at http://printing.kde.org/downloads/." ); + QSimpleRichText richtext( ( m_buffer.isEmpty() ? txt : m_buffer.prepend( "<pre>" ).append( "</pre>" ) ), p->font() ); + richtext.adjustSize(); + int x = ( width()-richtext.widthUsed() )/2, y = ( height()-richtext.height() )/2; + x = QMAX( x, 0 ); + y = QMAX( y, 0 ); + richtext.draw( p, x, y, QRect( x, y, richtext.widthUsed(), richtext.height() ), colorGroup() ); + m_boundingrect = QRect(); + } + else + { + int totalx = m_cols*m_pw, totaly = m_rows*m_ph; + float scale = QMIN( float( width()-1 )/totalx, float( height()-1 )/totaly ); + p->translate( 0, height()-1 ); + p->scale( scale, -scale ); + int x = ( int )( width()/scale-totalx )/2, y = ( int )( height()/scale-totaly )/2; + p->translate( x, y ); + m_boundingrect = p->xForm( QRect( 0, 0, totalx, totaly ) ); + + x = y = 0; + int px = m_posterbb.x(), py = m_posterbb.y(), pw = m_posterbb.width(), ph = m_posterbb.height(); + for ( int i=0; i<m_rows; i++, y+=m_ph, x=0 ) + { + for ( int j=0; j<m_cols; j++, x+=m_pw ) + { + bool selected = ( m_selectedpages.find( i*m_cols+j+1 ) != m_selectedpages.end() ); + p->fillRect( x+1, y+1, m_pw-2, m_ph-2, ( selected ? KGlobalSettings::highlightColor() : white ) ); + p->drawRect( x, y, m_pw, m_ph ); + if ( pw > 0 && ph > 0 ) + p->fillRect( x+m_mw+px, y+m_mh+py, QMIN( pw, m_pw-2*m_mw-px ), QMIN( ph, m_ph-2*m_mh-py ), + ( selected ? KGlobalSettings::highlightColor().dark( 160 ) : lightGray ) ); + p->setPen( Qt::DotLine ); + p->drawRect( x+m_mw, y+m_mh, m_pw-2*m_mw, m_ph-2*m_mh ); + p->setPen( Qt::SolidLine ); + + pw -= m_pw-2*m_mw-px; + px = 0; + } + + px = m_posterbb.x(); + ph -= m_ph-2*m_mh-py; + py = 0; + pw = m_posterbb.width(); + } + } + } + + delete p; + painter->drawPixmap( 0, 0, pix ); +} + +void PosterPreview::mouseMoveEvent( QMouseEvent *e ) +{ + if ( m_boundingrect.isValid() ) + { + if ( m_boundingrect.contains( e->pos() ) ) + setCursor( KCursor::handCursor() ); + else + setCursor( KCursor::arrowCursor() ); + } +} + +void PosterPreview::mousePressEvent( QMouseEvent *e ) +{ + if ( e->button() == Qt::LeftButton && m_boundingrect.isValid() ) + { + if ( m_boundingrect.contains( e->pos() ) ) + { + int c, r; + c = ( e->pos().x()-m_boundingrect.x() )/( m_boundingrect.width()/m_cols ) + 1; + r = m_rows - ( e->pos().y()-m_boundingrect.y() )/( m_boundingrect.height()/m_rows ); + int pagenum = ( r-1 )*m_cols+c; + + if ( m_selectedpages.find( pagenum ) == m_selectedpages.end() || + !( e->state() & Qt::ShiftButton ) ) + { + if ( !( e->state() & Qt::ShiftButton ) ) + m_selectedpages.clear(); + m_selectedpages.append( pagenum ); + update(); + emitSelectedPages(); + } + } + else if ( m_selectedpages.count() > 0 ) + { + m_selectedpages.clear(); + update(); + emitSelectedPages(); + } + } +} + +void PosterPreview::slotProcessStderr( KProcess*, char *buf, int len ) +{ + m_buffer.append( QCString( buf, len ) ); +} + +void PosterPreview::slotProcessExited( KProcess* ) +{ + if ( m_process->normalExit() && m_process->exitStatus() == 0 ) + parseBuffer(); + else + m_rows = m_cols = 0; + + m_dirty = false; + update(); +} + +void PosterPreview::setPosterSize( int s ) +{ + setPosterSize( pageSizeToPageName( KPrinter::PageSize( s ) ) ); +} + +void PosterPreview::setPosterSize( const QString& s ) +{ + if ( m_postersize != s ) + { + m_selectedpages.clear(); + m_postersize = s; + setDirty(); + emitSelectedPages(); + } +} + +void PosterPreview::setMediaSize( int s ) +{ + setMediaSize( pageSizeToPageName( ( KPrinter::PageSize )s ) ); +} + +void PosterPreview::setMediaSize( const QString& s ) +{ + if ( m_mediasize != s ) + { + m_selectedpages.clear(); + m_mediasize = s; + setDirty(); + emitSelectedPages(); + } +} + +void PosterPreview::setCutMargin( int value ) +{ + m_cutmargin = value; + setDirty(); +} + +void PosterPreview::setSelectedPages( const QString& s ) +{ + QStringList l = QStringList::split( ",", s, false ); + m_selectedpages.clear(); + for ( QStringList::ConstIterator it=l.begin(); it!=l.end(); ++it ) + { + int p; + if ( ( p = ( *it ).find( '-' ) ) == -1 ) + m_selectedpages.append( ( *it ).toInt() ); + else + { + int p1 = ( *it ).left( p ).toInt(), p2 = ( *it ).mid( p+1 ).toInt(); + for ( int i=p1; i<=p2; i++ ) + m_selectedpages.append( i ); + } + } + update(); +} + +void PosterPreview::emitSelectedPages() +{ + QString s; + if ( m_selectedpages.count() > 0 ) + { + for ( QValueList<int>::ConstIterator it=m_selectedpages.begin(); it!=m_selectedpages.end(); ++it ) + s.append( QString::number( *it ) + "," ); + s.truncate( s.length()-1 ); + } + emit selectionChanged( s ); +} + +#include "posterpreview.moc" |