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/QFile>
  25 #include <QtGui/QGraphicsScene>
  26 #include <QtGui/QGraphicsTextItem>
  27 #include <QtGui/QGraphicsPolygonItem>
  28 #include <QtGui/QTextCursor>
  29 #include "kdenlivetitle_wrapper.h"
  30 #include <framework/mlt_producer.h>
  31
  32 static Title* titleclass;
  33 static QApplication *app;
  34
  35 extern "C"
  36 {
  37         void init_qt( const char* c )
  38         {
  39                 titleclass=new Title( QString( c ) );
  40         }
  41
  42         void close_qt()
  43         {
  44                 delete titleclass;
  45         }
  46
  47         void refresh_kdenlivetitle( uint8_t* buffer, int width, int height , double position, char *templatexml, char *templatetext, int force_refresh )
  48         {
  49                 if (force_refresh) titleclass->reloadXml(templatexml, templatetext);
  50                 titleclass->drawKdenliveTitle( buffer, width, height, position, templatexml, templatetext );
  51         }
  52 }
  53
  54 Title::Title( const QString& filename ):m_filename( filename ), m_scene( NULL )
  55 {
  56         //must be extracted from kdenlive title
  57         /*m_start( QPolygonF( QRectF( 100, 100, 600, 600 ) ) );
  58         m_end( QPolygonF( QRectF( 0, 0, 300, 300 ) ) );*/
  59 }
  60
  61 Title::~Title()
  62 {
  63         if (m_scene) delete m_scene;
  64         if (app) delete app;
  65 }
  66
  67 void Title::reloadXml(char *templatexml, char *templatetext)
  68 {
  69         if (m_scene == NULL) return;
  70         loadDocument( m_filename, QString( templatexml ), QString( templatetext ) );
  71 }
  72
  73 void Title::drawKdenliveTitle( uint8_t * buffer, int width, int height, double position, char *templatexml, char *templatetext )
  74 {
  75         if ( m_scene == NULL )
  76         {
  77                 int argc=0;
  78                 char* argv[1];
  79                 argv[0]="xxx";
  80                 if ( ! QApplication::activeWindow() )
  81                         //if (!app)
  82                         app=new QApplication( argc,argv );
  83                 m_scene = new QGraphicsScene();
  84                 loadDocument( m_filename, QString( templatexml ), QString( templatetext ) );
  85         }
  86         //must be extracted from kdenlive title
  87
  88         QImage *img=new QImage( width,height,QImage::Format_ARGB32 );
  89         img->fill( 0 );
  90         QPainter p1;
  91         p1.begin( img );
  92         p1.setRenderHints( QPainter::Antialiasing | QPainter::TextAntialiasing | QPainter::HighQualityAntialiasing );//|QPainter::SmoothPixmapTransform );
  93
  94         if (m_start.polygon().isEmpty() && m_end.polygon().isEmpty()) {
  95             m_scene->render( &p1,QRect( 0, 0, width, height ) );
  96         }
  97         else {
  98             QRectF rstart=m_start.boundingRect();
  99             QRectF rend=m_end.boundingRect();
 100             QPointF topleft=rstart.topLeft()+( rend.topLeft()-rstart.topLeft() )*position;
 101             QPointF bottomRight=rstart.bottomRight()+( rend.bottomRight()-rstart.bottomRight() )*position;
 102             m_scene->render( &p1,QRect( 0,0,width,height ),QRectF( topleft,bottomRight ) );
 103         }
 104         p1.end();
 105         uint8_t *pointer=img->bits();
 106         QRgb* src = ( QRgb* ) pointer;
 107         for ( int i=0;i<width*height*4;i+=4 )
 108         {
 109                 *buffer++=qRed( *src );
 110                 *buffer++=qGreen( *src );
 111                 *buffer++=qBlue( *src );
 112                 *buffer++=qAlpha( *src );
 113                 src++;
 114         }
 115         delete img;
 116 }
 117
 118 int Title::loadDocument( const QString& url, const QString templateXml, const QString templateText )
 119 {
 120         if (m_scene == NULL) return 0;
 121         QDomDocument doc;
 122         if ( !templateXml.isEmpty() )
 123         {
 124                 doc.setContent( templateXml );
 125         }
 126         else
 127         {
 128                 QFile file( url );
 129                 if ( file.open( QIODevice::ReadOnly ) )
 130                 {
 131                         doc.setContent( &file, false );
 132                         file.close();
 133                 }
 134         }
 135         return loadFromXml( doc, templateText );
 136 }
 137
 138 int Title::loadFromXml( QDomDocument doc, const QString templateText )
 139 {
 140         m_scene->clear();
 141         QDomNodeList titles = doc.elementsByTagName( "kdenlivetitle" );
 142         int maxZValue = 0;
 143         if ( titles.size() )
 144         {
 145
 146                 QDomNodeList items = titles.item( 0 ).childNodes();
 147                 for ( int i = 0; i < items.count(); i++ )
 148                 {
 149                         QGraphicsItem *gitem = NULL;
 150                         int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 151                         if ( zValue > -1000 )
 152                         {
 153                                 if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsTextItem" )
 154                                 {
 155                                         QDomNamedNodeMap txtProperties = items.item( i ).namedItem( "content" ).attributes();
 156                                         QFont font( txtProperties.namedItem( "font" ).nodeValue() );
 157                                         font.setBold( txtProperties.namedItem( "font-bold" ).nodeValue().toInt() );
 158                                         font.setItalic( txtProperties.namedItem( "font-italic" ).nodeValue().toInt() );
 159                                         font.setUnderline( txtProperties.namedItem( "font-underline" ).nodeValue().toInt() );
 160                                         // Older Kdenlive version did not store pixel size but point size
 161                                         if ( txtProperties.namedItem( "font-pixel-size" ).isNull() )
 162                                         {
 163                                                 QFont f2;
 164                                                 f2.setPointSize( txtProperties.namedItem( "font-size" ).nodeValue().toInt() );
 165                                                 font.setPixelSize( QFontInfo( f2 ).pixelSize() );
 166                                         }
 167                                         else
 168                                                 font.setPixelSize( txtProperties.namedItem( "font-pixel-size" ).nodeValue().toInt() );
 169                                         QColor col( stringToColor( txtProperties.namedItem( "font-color" ).nodeValue() ) );
 170                                         QGraphicsTextItem *txt;
 171                                         if ( !templateText.isEmpty() )
 172                                         {
 173                                                 QString text = items.item( i ).namedItem( "content" ).firstChild().nodeValue();
 174                                                 text = text.replace( "%s", templateText );
 175                                                 txt = m_scene->addText( text, font );
 176                                         }
 177                                         else txt = m_scene->addText( items.item( i ).namedItem( "content" ).firstChild().nodeValue(), font );
 178                                         txt->setDefaultTextColor( col );
 179                                         txt->setTextInteractionFlags( Qt::NoTextInteraction );
 180                                         if ( txtProperties.namedItem( "alignment" ).isNull() == false )
 181                                         {
 182                                                 txt->setTextWidth( txt->boundingRect().width() );
 183                                                 QTextCursor cur = txt->textCursor();
 184                                                 QTextBlockFormat format = cur.blockFormat();
 185                                                 format.setAlignment(( Qt::Alignment ) txtProperties.namedItem( "alignment" ).nodeValue().toInt() );
 186                                                 cur.select( QTextCursor::Document );
 187                                                 cur.setBlockFormat( format );
 188                                                 txt->setTextCursor( cur );
 189                                                 cur.clearSelection();
 190                                                 txt->setTextCursor( cur );
 191                                         }
 192
 193                                         if ( !txtProperties.namedItem( "kdenlive-axis-x-inverted" ).isNull() )
 194                                         {
 195                                                 //txt->setData(OriginXLeft, txtProperties.namedItem("kdenlive-axis-x-inverted").nodeValue().toInt());
 196                                         }
 197                                         if ( !txtProperties.namedItem( "kdenlive-axis-y-inverted" ).isNull() )
 198                                         {
 199                                                 //txt->setData(OriginYTop, txtProperties.namedItem("kdenlive-axis-y-inverted").nodeValue().toInt());
 200                                         }
 201
 202                                         gitem = txt;
 203                                 }
 204                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsRectItem" )
 205                                 {
 206                                         QString rect = items.item( i ).namedItem( "content" ).attributes().namedItem( "rect" ).nodeValue();
 207                                         QString br_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "brushcolor" ).nodeValue();
 208                                         QString pen_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "pencolor" ).nodeValue();
 209                                         double penwidth = items.item( i ).namedItem( "content" ).attributes().namedItem( "penwidth" ).nodeValue().toDouble();
 210                                         QGraphicsRectItem *rec = m_scene->addRect( stringToRect( rect ), QPen( QBrush( stringToColor( pen_str ) ), penwidth ), QBrush( stringToColor( br_str ) ) );
 211                                         gitem = rec;
 212                                 }
 213                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsPixmapItem" )
 214                                 {
 215                                         QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 216                                         QPixmap pix( url );
 217                                         QGraphicsPixmapItem *rec = m_scene->addPixmap( pix );
 218                                         rec->setData( Qt::UserRole, url );
 219                                         gitem = rec;
 220                                 }
 221                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsSvgItem" )
 222                                 {
 223                                         QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 224                                         //QGraphicsSvgItem *rec = new QGraphicsSvgItem(url);
 225                                         //m_scene->addItem(rec);
 226                                         //rec->setData(Qt::UserRole, url);
 227                                         //gitem = rec;
 228                                 }
 229                         }
 230                         //pos and transform
 231                         if ( gitem )
 232                         {
 233                                 QPointF p( items.item( i ).namedItem( "position" ).attributes().namedItem( "x" ).nodeValue().toDouble(),
 234                                            items.item( i ).namedItem( "position" ).attributes().namedItem( "y" ).nodeValue().toDouble() );
 235                                 gitem->setPos( p );
 236                                 gitem->setTransform( stringToTransform( items.item( i ).namedItem( "position" ).firstChild().firstChild().nodeValue() ) );
 237                                 int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 238                                 if ( zValue > maxZValue ) maxZValue = zValue;
 239                                 gitem->setZValue( zValue );
 240                                 //gitem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 241                         }
 242                         if ( items.item( i ).nodeName() == "background" )
 243                         {
 244                                 QColor color = QColor( stringToColor( items.item( i ).attributes().namedItem( "color" ).nodeValue() ) );
 245                                 //color.setAlpha(items.item(i).attributes().namedItem("alpha").nodeValue().toInt());
 246                                 QList<QGraphicsItem *> items = m_scene->items();
 247                                 for ( int i = 0; i < items.size(); i++ )
 248                                 {
 249                                         if ( items.at( i )->zValue() == -1100 )
 250                                         {
 251                                                 (( QGraphicsRectItem * )items.at( i ) )->setBrush( QBrush( color ) );
 252                                                 break;
 253                                         }
 254                                 }
 255                         }
 256                         else if ( items.item( i ).nodeName() == "startviewport" )
 257                         {
 258                                 QString rect = items.item( i ).attributes().namedItem( "rect" ).nodeValue();
 259                                 m_start.setPolygon( stringToRect( rect ) );
 260                         }
 261                         else if ( items.item( i ).nodeName() == "endviewport" )
 262                         {
 263                                 QString rect = items.item( i ).attributes().namedItem( "rect" ).nodeValue();
 264                                 m_end.setPolygon( stringToRect( rect ) );
 265                         }
 266                 }
 267         }
 268         return maxZValue;
 269 }
 270
 271 QString Title::colorToString( const QColor& c )
 272 {
 273         QString ret = "%1,%2,%3,%4";
 274         ret = ret.arg( c.red() ).arg( c.green() ).arg( c.blue() ).arg( c.alpha() );
 275         return ret;
 276 }
 277
 278 QString Title::rectFToString( const QRectF& c )
 279 {
 280         QString ret = "%1,%2,%3,%4";
 281         ret = ret.arg( c.top() ).arg( c.left() ).arg( c.width() ).arg( c.height() );
 282         return ret;
 283 }
 284
 285 QRectF Title::stringToRect( const QString & s )
 286 {
 287
 288         QStringList l = s.split( ',' );
 289         if ( l.size() < 4 )
 290                 return QRectF();
 291         return QRectF( l.at( 0 ).toDouble(), l.at( 1 ).toDouble(), l.at( 2 ).toDouble(), l.at( 3 ).toDouble() ).normalized();
 292 }
 293
 294 QColor Title::stringToColor( const QString & s )
 295 {
 296         QStringList l = s.split( ',' );
 297         if ( l.size() < 4 )
 298                 return QColor();
 299         return QColor( l.at( 0 ).toInt(), l.at( 1 ).toInt(), l.at( 2 ).toInt(), l.at( 3 ).toInt() );
 300         ;
 301 }
 302 QTransform Title::stringToTransform( const QString& s )
 303 {
 304         QStringList l = s.split( ',' );
 305         if ( l.size() < 9 )
 306                 return QTransform();
 307         return QTransform(
 308                    l.at( 0 ).toDouble(), l.at( 1 ).toDouble(), l.at( 2 ).toDouble(),
 309                    l.at( 3 ).toDouble(), l.at( 4 ).toDouble(), l.at( 5 ).toDouble(),
 310                    l.at( 6 ).toDouble(), l.at( 7 ).toDouble(), l.at( 8 ).toDouble()
 311                );
 312 }