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00020 #include "posterpreview.h"
00021
00022 #include <kprocess.h>
00023 #include <tqpainter.h>
00024 #include <tqsimplerichtext.h>
00025 #include <tqtimer.h>
00026 #include <tqpixmap.h>
00027 #include <kprinter.h>
00028 #include <tdelocale.h>
00029 #include <kcursor.h>
00030 #include <tdeglobalsettings.h>
00031
00032 PosterPreview::PosterPreview( TQWidget *parent, const char *name )
00033 : TQFrame( parent, name )
00034 {
00035 m_postersize = m_mediasize = "A4";
00036 m_cutmargin = 5;
00037 init();
00038 }
00039
00040 PosterPreview::PosterPreview( const TQString& postersize, const TQString& mediasize, TQWidget *parent, const char *name )
00041 : TQFrame( parent, name )
00042 {
00043 m_postersize = postersize;
00044 m_mediasize = mediasize;
00045 m_cutmargin = 5;
00046 init();
00047 }
00048
00049 PosterPreview::~PosterPreview()
00050 {
00051 delete m_process;
00052 }
00053
00054 void PosterPreview::init()
00055 {
00056 m_process = new TDEProcess;
00057 connect( m_process, TQT_SIGNAL( receivedStderr( TDEProcess*, char*, int ) ), TQT_SLOT( slotProcessStderr( TDEProcess*, char*, int ) ) );
00058 connect( m_process, TQT_SIGNAL( processExited( TDEProcess* ) ), TQT_SLOT( slotProcessExited( TDEProcess* ) ) );
00059
00060 m_cols = m_rows = m_pw = m_ph = m_mw = m_mh = 0;
00061 m_dirty = false;
00062 setDirty();
00063 setMouseTracking( true );
00064 setBackgroundMode( TQt::NoBackground );
00065 }
00066
00067 void PosterPreview::parseBuffer()
00068 {
00069 int rotate;
00070 float pw, ph, mw, mh;
00071 float x1, x2, y1, y2;
00072 sscanf( m_buffer.ascii(), "%d %d %d %g %g %g %g %g %g %g %g", &m_rows, &m_cols, &rotate,
00073 &pw, &ph, &mw, &mh, &x1, &y1, &x2, &y2 );
00074 m_pw = ( int )( rotate ? ph : pw );
00075 m_ph = ( int )( rotate ? pw : ph );
00076 m_mw = ( int )( rotate ? mh : mw );
00077 m_mh = ( int )( rotate ? mw : mh );
00078 m_posterbb.setCoords( ( int )x1, ( int )y1, ( int )x2, ( int )y2 );
00079 }
00080
00081 void PosterPreview::setDirty()
00082 {
00083 if ( !m_dirty )
00084 {
00085 m_dirty = true;
00086 TQTimer::singleShot( 1, this, TQT_SLOT( updatePoster() ) );
00087 }
00088 }
00089
00090 void PosterPreview::updatePoster()
00091 {
00092 m_buffer = "";
00093 m_process->clearArguments();
00094 *m_process << "poster" << "-F" << "-m" + m_mediasize << "-p" + m_postersize
00095 << "-c" + TQString::number( m_cutmargin ) + "%";
00096 if ( !m_process->start( TDEProcess::NotifyOnExit, TDEProcess::Stderr ) )
00097 {
00098 m_rows = m_cols = 0;
00099 m_dirty = false;
00100 update();
00101 }
00102 }
00103
00104 void PosterPreview::drawContents( TQPainter *painter )
00105 {
00106 TQPixmap pix( width(), height() );
00107 TQPainter *p = new TQPainter( &pix );
00108
00109 p->fillRect( 0, 0, width(), height(), colorGroup().background() );
00110
00111 if ( isEnabled() )
00112 {
00113 if ( m_rows <= 0 || m_cols <= 0 || m_pw <= 0 || m_ph <= 0 )
00114 {
00115 TQString txt = i18n( "Poster preview not available. Either the <b>poster</b> "
00116 "executable is not properly installed, or you don't have the required version" );
00117 TQSimpleRichText richtext( ( m_buffer.isEmpty() ? txt : m_buffer.prepend( "<pre>" ).append( "</pre>" ) ), p->font() );
00118 richtext.adjustSize();
00119 int x = ( width()-richtext.widthUsed() )/2, y = ( height()-richtext.height() )/2;
00120 x = TQMAX( x, 0 );
00121 y = TQMAX( y, 0 );
00122 richtext.draw( p, x, y, TQRect( x, y, richtext.widthUsed(), richtext.height() ), colorGroup() );
00123 m_boundingrect = TQRect();
00124 }
00125 else
00126 {
00127 int totalx = m_cols*m_pw, totaly = m_rows*m_ph;
00128 float scale = TQMIN( float( width()-1 )/totalx, float( height()-1 )/totaly );
00129 p->translate( 0, height()-1 );
00130 p->scale( scale, -scale );
00131 int x = ( int )( width()/scale-totalx )/2, y = ( int )( height()/scale-totaly )/2;
00132 p->translate( x, y );
00133 m_boundingrect = p->xForm( TQRect( 0, 0, totalx, totaly ) );
00134
00135 x = y = 0;
00136 int px = m_posterbb.x(), py = m_posterbb.y(), pw = m_posterbb.width(), ph = m_posterbb.height();
00137 for ( int i=0; i<m_rows; i++, y+=m_ph, x=0 )
00138 {
00139 for ( int j=0; j<m_cols; j++, x+=m_pw )
00140 {
00141 bool selected = ( m_selectedpages.find( i*m_cols+j+1 ) != m_selectedpages.end() );
00142 p->fillRect( x+1, y+1, m_pw-2, m_ph-2, ( selected ? TDEGlobalSettings::highlightColor() : white ) );
00143 p->drawRect( x, y, m_pw, m_ph );
00144 if ( pw > 0 && ph > 0 )
00145 p->fillRect( x+m_mw+px, y+m_mh+py, TQMIN( pw, m_pw-2*m_mw-px ), TQMIN( ph, m_ph-2*m_mh-py ),
00146 ( selected ? TQColor(TDEGlobalSettings::highlightColor().dark( 160 )) : lightGray ) );
00147 p->setPen( Qt::DotLine );
00148 p->drawRect( x+m_mw, y+m_mh, m_pw-2*m_mw, m_ph-2*m_mh );
00149 p->setPen( Qt::SolidLine );
00150
00151 pw -= m_pw-2*m_mw-px;
00152 px = 0;
00153 }
00154
00155 px = m_posterbb.x();
00156 ph -= m_ph-2*m_mh-py;
00157 py = 0;
00158 pw = m_posterbb.width();
00159 }
00160 }
00161 }
00162
00163 delete p;
00164 painter->drawPixmap( 0, 0, pix );
00165 }
00166
00167 void PosterPreview::mouseMoveEvent( TQMouseEvent *e )
00168 {
00169 if ( m_boundingrect.isValid() )
00170 {
00171 if ( m_boundingrect.contains( e->pos() ) )
00172 setCursor( KCursor::handCursor() );
00173 else
00174 setCursor( KCursor::arrowCursor() );
00175 }
00176 }
00177
00178 void PosterPreview::mousePressEvent( TQMouseEvent *e )
00179 {
00180 if ( e->button() == Qt::LeftButton && m_boundingrect.isValid() )
00181 {
00182 if ( m_boundingrect.contains( e->pos() ) )
00183 {
00184 int c, r;
00185 c = ( e->pos().x()-m_boundingrect.x() )/( m_boundingrect.width()/m_cols ) + 1;
00186 r = m_rows - ( e->pos().y()-m_boundingrect.y() )/( m_boundingrect.height()/m_rows );
00187 int pagenum = ( r-1 )*m_cols+c;
00188
00189 if ( m_selectedpages.find( pagenum ) == m_selectedpages.end() ||
00190 !( e->state() & TQt::ShiftButton ) )
00191 {
00192 if ( !( e->state() & TQt::ShiftButton ) )
00193 m_selectedpages.clear();
00194 m_selectedpages.append( pagenum );
00195 update();
00196 emitSelectedPages();
00197 }
00198 }
00199 else if ( m_selectedpages.count() > 0 )
00200 {
00201 m_selectedpages.clear();
00202 update();
00203 emitSelectedPages();
00204 }
00205 }
00206 }
00207
00208 void PosterPreview::slotProcessStderr( TDEProcess*, char *buf, int len )
00209 {
00210 m_buffer.append( TQCString( buf, len ) );
00211 }
00212
00213 void PosterPreview::slotProcessExited( TDEProcess* )
00214 {
00215 if ( m_process->normalExit() && m_process->exitStatus() == 0 )
00216 parseBuffer();
00217 else
00218 m_rows = m_cols = 0;
00219
00220 m_dirty = false;
00221 update();
00222 }
00223
00224 void PosterPreview::setPosterSize( int s )
00225 {
00226 setPosterSize( pageSizeToPageName( KPrinter::PageSize( s ) ) );
00227 }
00228
00229 void PosterPreview::setPosterSize( const TQString& s )
00230 {
00231 if ( m_postersize != s )
00232 {
00233 m_selectedpages.clear();
00234 m_postersize = s;
00235 setDirty();
00236 emitSelectedPages();
00237 }
00238 }
00239
00240 void PosterPreview::setMediaSize( int s )
00241 {
00242 setMediaSize( pageSizeToPageName( ( KPrinter::PageSize )s ) );
00243 }
00244
00245 void PosterPreview::setMediaSize( const TQString& s )
00246 {
00247 if ( m_mediasize != s )
00248 {
00249 m_selectedpages.clear();
00250 m_mediasize = s;
00251 setDirty();
00252 emitSelectedPages();
00253 }
00254 }
00255
00256 void PosterPreview::setCutMargin( int value )
00257 {
00258 m_cutmargin = value;
00259 setDirty();
00260 }
00261
00262 void PosterPreview::setSelectedPages( const TQString& s )
00263 {
00264 TQStringList l = TQStringList::split( ",", s, false );
00265 m_selectedpages.clear();
00266 for ( TQStringList::ConstIterator it=l.begin(); it!=l.end(); ++it )
00267 {
00268 int p;
00269 if ( ( p = ( *it ).find( '-' ) ) == -1 )
00270 m_selectedpages.append( ( *it ).toInt() );
00271 else
00272 {
00273 int p1 = ( *it ).left( p ).toInt(), p2 = ( *it ).mid( p+1 ).toInt();
00274 for ( int i=p1; i<=p2; i++ )
00275 m_selectedpages.append( i );
00276 }
00277 }
00278 update();
00279 }
00280
00281 void PosterPreview::emitSelectedPages()
00282 {
00283 TQString s;
00284 if ( m_selectedpages.count() > 0 )
00285 {
00286 for ( TQValueList<int>::ConstIterator it=m_selectedpages.begin(); it!=m_selectedpages.end(); ++it )
00287 s.append( TQString::number( *it ) + "," );
00288 s.truncate( s.length()-1 );
00289 }
00290 emit selectionChanged( s );
00291 }
00292
00293 #include "posterpreview.moc"