git.sesse.net Git - mlt/blob - src/modules/qimage/kdenlivetitle_wrapper.cpp

   1 /*
   2  * kdenlivetitle_wrapper.cpp -- kdenlivetitle wrapper
   3  * Copyright (c) 2009 Marco Gittler <g.marco@freenet.de>
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  18  */
  19
  20 #include <QtGui/QImage>
  21 #include <QtGui/QPainter>
  22 #include <QtCore/QCoreApplication>
  23 #include <QtGui/QApplication>
  24 #include <QtCore/QDebug>
  25 #include <QtCore/QFile>
  26 #include <QtGui/QGraphicsScene>
  27 #include <QtGui/QGraphicsTextItem>
  28 #include <QtGui/QGraphicsPolygonItem>
  29 #include <QtGui/QTextCursor>
  30 #include "kdenlivetitle_wrapper.h"
  31 #include <framework/mlt_producer.h>
  32
  33 static Title* titleclass;
  34 static QApplication *app;
  35
  36 extern "C"
  37 {
  38         void init_qt( const char* c )
  39         {
  40                 titleclass=new Title( QString( c ) );
  41         }
  42         void refresh_kdenlivetitle( uint8_t* buffer, int width, int height , double position, char *templatexml, char *templatetext, int force_refresh )
  43         {
  44                 if (force_refresh) titleclass->reloadXml(templatexml, templatetext);
  45                 titleclass->drawKdenliveTitle( buffer, width, height, position, templatexml, templatetext );
  46         }
  47 }
  48
  49 Title::Title( const QString& filename ):m_filename( filename ), m_scene( NULL )
  50 {
  51         //must be extracted from kdenlive title
  52         /*m_start( QPolygonF( QRectF( 100, 100, 600, 600 ) ) );
  53         m_end( QPolygonF( QRectF( 0, 0, 300, 300 ) ) );*/
  54 }
  55
  56 Title::~Title()
  57 {
  58         delete m_scene;
  59 }
  60
  61 void Title::reloadXml(char *templatexml, char *templatetext)
  62 {
  63         if (m_scene == NULL) return;
  64         loadDocument( m_filename, QString( templatexml ), QString( templatetext ) );
  65 }
  66
  67 void Title::drawKdenliveTitle( uint8_t * buffer, int width, int height, double position, char *templatexml, char *templatetext )
  68 {
  69         if ( m_scene == NULL )
  70         {
  71                 int argc=0;
  72                 char* argv[1];
  73                 argv[0]="xxx";
  74                 if ( ! QApplication::activeWindow() )
  75                         //if (!app)
  76                         app=new QApplication( argc,argv );
  77                 m_scene = new QGraphicsScene();
  78                 loadDocument( m_filename, QString( templatexml ), QString( templatetext ) );
  79         }
  80         //must be extracted from kdenlive title
  81
  82         QImage *img=new QImage( width,height,QImage::Format_ARGB32 );
  83         img->fill( 0 );
  84         QPainter p1;
  85         p1.begin( img );
  86         p1.setRenderHints( QPainter::Antialiasing | QPainter::TextAntialiasing | QPainter::HighQualityAntialiasing );//|QPainter::SmoothPixmapTransform );
  87
  88         if (m_start.polygon().isEmpty() && m_end.polygon().isEmpty()) {
  89             m_scene->render( &p1,QRect( 0, 0, width, height ) );
  90         }
  91         else {
  92             QRectF rstart=m_start.boundingRect();
  93             QRectF rend=m_end.boundingRect();
  94             QPointF topleft=rstart.topLeft()+( rend.topLeft()-rstart.topLeft() )*position;
  95             QPointF bottomRight=rstart.bottomRight()+( rend.bottomRight()-rstart.bottomRight() )*position;
  96             m_scene->render( &p1,QRect( 0,0,width,height ),QRectF( topleft,bottomRight ) );
  97         }
  98         p1.end();
  99         uint8_t *pointer=img->bits();
 100         QRgb* src = ( QRgb* ) pointer;
 101         for ( int i=0;i<width*height*4;i+=4 )
 102         {
 103                 *buffer++=qRed( *src );
 104                 *buffer++=qGreen( *src );
 105                 *buffer++=qBlue( *src );
 106                 *buffer++=qAlpha( *src );
 107                 src++;
 108         }
 109         delete img;
 110 }
 111
 112 int Title::loadDocument( const QString& url, const QString templateXml, const QString templateText )
 113 {
 114         if (m_scene == NULL) return 0;
 115         QDomDocument doc;
 116         if ( !templateXml.isEmpty() )
 117         {
 118                 doc.setContent( templateXml );
 119         }
 120         else
 121         {
 122                 QFile file( url );
 123                 if ( file.open( QIODevice::ReadOnly ) )
 124                 {
 125                         doc.setContent( &file, false );
 126                         file.close();
 127                 }
 128         }
 129         return loadFromXml( doc, templateText );
 130 }
 131
 132 int Title::loadFromXml( QDomDocument doc, const QString templateText )
 133 {
 134         m_scene->clear();
 135         QDomNodeList titles = doc.elementsByTagName( "kdenlivetitle" );
 136         int maxZValue = 0;
 137         if ( titles.size() )
 138         {
 139
 140                 QDomNodeList items = titles.item( 0 ).childNodes();
 141                 for ( int i = 0; i < items.count(); i++ )
 142                 {
 143                         QGraphicsItem *gitem = NULL;
 144                         int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 145                         if ( zValue > -1000 )
 146                         {
 147                                 if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsTextItem" )
 148                                 {
 149                                         QDomNamedNodeMap txtProperties = items.item( i ).namedItem( "content" ).attributes();
 150                                         QFont font( txtProperties.namedItem( "font" ).nodeValue() );
 151                                         font.setBold( txtProperties.namedItem( "font-bold" ).nodeValue().toInt() );
 152                                         font.setItalic( txtProperties.namedItem( "font-italic" ).nodeValue().toInt() );
 153                                         font.setUnderline( txtProperties.namedItem( "font-underline" ).nodeValue().toInt() );
 154                                         // Older Kdenlive version did not store pixel size but point size
 155                                         if ( txtProperties.namedItem( "font-pixel-size" ).isNull() )
 156                                         {
 157                                                 QFont f2;
 158                                                 f2.setPointSize( txtProperties.namedItem( "font-size" ).nodeValue().toInt() );
 159                                                 font.setPixelSize( QFontInfo( f2 ).pixelSize() );
 160                                         }
 161                                         else
 162                                                 font.setPixelSize( txtProperties.namedItem( "font-pixel-size" ).nodeValue().toInt() );
 163                                         QColor col( stringToColor( txtProperties.namedItem( "font-color" ).nodeValue() ) );
 164                                         QGraphicsTextItem *txt;
 165                                         if ( !templateText.isEmpty() )
 166                                         {
 167                                                 QString text = items.item( i ).namedItem( "content" ).firstChild().nodeValue();
 168                                                 text = text.replace( "%s", templateText );
 169                                                 txt = m_scene->addText( text, font );
 170                                         }
 171                                         else txt = m_scene->addText( items.item( i ).namedItem( "content" ).firstChild().nodeValue(), font );
 172                                         txt->setDefaultTextColor( col );
 173                                         txt->setTextInteractionFlags( Qt::NoTextInteraction );
 174                                         if ( txtProperties.namedItem( "alignment" ).isNull() == false )
 175                                         {
 176                                                 txt->setTextWidth( txt->boundingRect().width() );
 177                                                 QTextCursor cur = txt->textCursor();
 178                                                 QTextBlockFormat format = cur.blockFormat();
 179                                                 format.setAlignment(( Qt::Alignment ) txtProperties.namedItem( "alignment" ).nodeValue().toInt() );
 180                                                 cur.select( QTextCursor::Document );
 181                                                 cur.setBlockFormat( format );
 182                                                 txt->setTextCursor( cur );
 183                                                 cur.clearSelection();
 184                                                 txt->setTextCursor( cur );
 185                                         }
 186
 187                                         if ( !txtProperties.namedItem( "kdenlive-axis-x-inverted" ).isNull() )
 188                                         {
 189                                                 //txt->setData(OriginXLeft, txtProperties.namedItem("kdenlive-axis-x-inverted").nodeValue().toInt());
 190                                         }
 191                                         if ( !txtProperties.namedItem( "kdenlive-axis-y-inverted" ).isNull() )
 192                                         {
 193                                                 //txt->setData(OriginYTop, txtProperties.namedItem("kdenlive-axis-y-inverted").nodeValue().toInt());
 194                                         }
 195
 196                                         gitem = txt;
 197                                 }
 198                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsRectItem" )
 199                                 {
 200                                         QString rect = items.item( i ).namedItem( "content" ).attributes().namedItem( "rect" ).nodeValue();
 201                                         QString br_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "brushcolor" ).nodeValue();
 202                                         QString pen_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "pencolor" ).nodeValue();
 203                                         double penwidth = items.item( i ).namedItem( "content" ).attributes().namedItem( "penwidth" ).nodeValue().toDouble();
 204                                         QGraphicsRectItem *rec = m_scene->addRect( stringToRect( rect ), QPen( QBrush( stringToColor( pen_str ) ), penwidth ), QBrush( stringToColor( br_str ) ) );
 205                                         gitem = rec;
 206                                 }
 207                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsPixmapItem" )
 208                                 {
 209                                         QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 210                                         QPixmap pix( url );
 211                                         QGraphicsPixmapItem *rec = m_scene->addPixmap( pix );
 212                                         rec->setData( Qt::UserRole, url );
 213                                         gitem = rec;
 214                                 }
 215                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsSvgItem" )
 216                                 {
 217                                         QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 218                                         //QGraphicsSvgItem *rec = new QGraphicsSvgItem(url);
 219                                         //m_scene->addItem(rec);
 220                                         //rec->setData(Qt::UserRole, url);
 221                                         //gitem = rec;
 222                                 }
 223                         }
 224                         //pos and transform
 225                         if ( gitem )
 226                         {
 227                                 QPointF p( items.item( i ).namedItem( "position" ).attributes().namedItem( "x" ).nodeValue().toDouble(),
 228                                            items.item( i ).namedItem( "position" ).attributes().namedItem( "y" ).nodeValue().toDouble() );
 229                                 gitem->setPos( p );
 230                                 gitem->setTransform( stringToTransform( items.item( i ).namedItem( "position" ).firstChild().firstChild().nodeValue() ) );
 231                                 int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 232                                 if ( zValue > maxZValue ) maxZValue = zValue;
 233                                 gitem->setZValue( zValue );
 234                                 //gitem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 235                         }
 236                         if ( items.item( i ).nodeName() == "background" )
 237                         {
 238                                 QColor color = QColor( stringToColor( items.item( i ).attributes().namedItem( "color" ).nodeValue() ) );
 239                                 //color.setAlpha(items.item(i).attributes().namedItem("alpha").nodeValue().toInt());
 240                                 QList<QGraphicsItem *> items = m_scene->items();
 241                                 for ( int i = 0; i < items.size(); i++ )
 242                                 {
 243                                         if ( items.at( i )->zValue() == -1100 )
 244                                         {
 245                                                 (( QGraphicsRectItem * )items.at( i ) )->setBrush( QBrush( color ) );
 246                                                 break;
 247                                         }
 248                                 }
 249                         }
 250                         else if ( items.item( i ).nodeName() == "startviewport" )
 251                         {
 252                                 QString rect = items.item( i ).attributes().namedItem( "rect" ).nodeValue();
 253                                 m_start.setPolygon( stringToRect( rect ) );
 254                         }
 255                         else if ( items.item( i ).nodeName() == "endviewport" )
 256                         {
 257                                 QString rect = items.item( i ).attributes().namedItem( "rect" ).nodeValue();
 258                                 m_end.setPolygon( stringToRect( rect ) );
 259                         }
 260                 }
 261         }
 262         return maxZValue;
 263 }
 264
 265 QString Title::colorToString( const QColor& c )
 266 {
 267         QString ret = "%1,%2,%3,%4";
 268         ret = ret.arg( c.red() ).arg( c.green() ).arg( c.blue() ).arg( c.alpha() );
 269         return ret;
 270 }
 271
 272 QString Title::rectFToString( const QRectF& c )
 273 {
 274         QString ret = "%1,%2,%3,%4";
 275         ret = ret.arg( c.top() ).arg( c.left() ).arg( c.width() ).arg( c.height() );
 276         return ret;
 277 }
 278
 279 QRectF Title::stringToRect( const QString & s )
 280 {
 281
 282         QStringList l = s.split( ',' );
 283         if ( l.size() < 4 )
 284                 return QRectF();
 285         return QRectF( l.at( 0 ).toDouble(), l.at( 1 ).toDouble(), l.at( 2 ).toDouble(), l.at( 3 ).toDouble() ).normalized();
 286 }
 287
 288 QColor Title::stringToColor( const QString & s )
 289 {
 290         QStringList l = s.split( ',' );
 291         if ( l.size() < 4 )
 292                 return QColor();
 293         return QColor( l.at( 0 ).toInt(), l.at( 1 ).toInt(), l.at( 2 ).toInt(), l.at( 3 ).toInt() );
 294         ;
 295 }
 296 QTransform Title::stringToTransform( const QString& s )
 297 {
 298         QStringList l = s.split( ',' );
 299         if ( l.size() < 9 )
 300                 return QTransform();
 301         return QTransform(
 302                    l.at( 0 ).toDouble(), l.at( 1 ).toDouble(), l.at( 2 ).toDouble(),
 303                    l.at( 3 ).toDouble(), l.at( 4 ).toDouble(), l.at( 5 ).toDouble(),
 304                    l.at( 6 ).toDouble(), l.at( 7 ).toDouble(), l.at( 8 ).toDouble()
 305                );
 306 }