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 }
  52
  53 Title::~Title()
  54 {
  55         delete m_scene;
  56 }
  57
  58 void Title::reloadXml(char *templatexml, char *templatetext)
  59 {
  60         if (m_scene == NULL) return;
  61         loadDocument( m_filename, QString( templatexml ), QString( templatetext ) );
  62 }
  63
  64 void Title::drawKdenliveTitle( uint8_t * buffer, int width, int height, double position, char *templatexml, char *templatetext )
  65 {
  66         if ( m_scene == NULL )
  67         {
  68                 int argc=0;
  69                 char* argv[1];
  70                 argv[0]="xxx";
  71                 if ( ! QApplication::activeWindow() )
  72                         //if (!app)
  73                         app=new QApplication( argc,argv );
  74                 m_scene = new QGraphicsScene(app);
  75                 loadDocument( m_filename, QString( templatexml ), QString( templatetext ) );
  76         }
  77         //must be extracted from kdenlive title
  78
  79         QImage *img=new QImage( width,height,QImage::Format_ARGB32 );
  80         img->fill( 0 );
  81         QPainter p1;
  82         p1.begin( img );
  83         p1.setRenderHints( QPainter::Antialiasing | QPainter::TextAntialiasing | QPainter::HighQualityAntialiasing );//|QPainter::SmoothPixmapTransform );
  84
  85         if (m_start.isNull() && m_end.isNull()) {
  86             m_scene->render( &p1,QRect( 0, 0, width, height ) );
  87         }
  88         else {
  89             QPointF topleft=m_start.topLeft()+( m_end.topLeft()-m_start.topLeft() )*position;
  90             QPointF bottomRight=m_start.bottomRight()+( m_end.bottomRight()-m_start.bottomRight() )*position;
  91             m_scene->render( &p1,QRect( 0,0,width,height ),QRectF( topleft,bottomRight ) );
  92         }
  93         p1.end();
  94         uint8_t *pointer=img->bits();
  95         QRgb* src = ( QRgb* ) pointer;
  96         for ( int i=0;i<width*height*4;i+=4 )
  97         {
  98                 *buffer++=qRed( *src );
  99                 *buffer++=qGreen( *src );
 100                 *buffer++=qBlue( *src );
 101                 *buffer++=qAlpha( *src );
 102                 src++;
 103         }
 104         delete img;
 105 }
 106
 107 int Title::loadDocument( const QString& url, const QString templateXml, const QString templateText )
 108 {
 109         if (m_scene == NULL) return 0;
 110         QDomDocument doc;
 111         if ( !templateXml.isEmpty() )
 112         {
 113                 doc.setContent( templateXml );
 114         }
 115         else
 116         {
 117                 QFile file( url );
 118                 if ( file.open( QIODevice::ReadOnly ) )
 119                 {
 120                         doc.setContent( &file, false );
 121                         file.close();
 122                 }
 123         }
 124         return loadFromXml( doc, templateText );
 125 }
 126
 127 int Title::loadFromXml( QDomDocument doc, const QString templateText )
 128 {
 129         m_scene->clear();
 130         QDomNodeList titles = doc.elementsByTagName( "kdenlivetitle" );
 131         int maxZValue = 0;
 132         if ( titles.size() )
 133         {
 134
 135                 QDomNodeList items = titles.item( 0 ).childNodes();
 136                 for ( int i = 0; i < items.count(); i++ )
 137                 {
 138                         QGraphicsItem *gitem = NULL;
 139                         int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 140                         if ( zValue > -1000 )
 141                         {
 142                                 if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsTextItem" )
 143                                 {
 144                                         QDomNamedNodeMap txtProperties = items.item( i ).namedItem( "content" ).attributes();
 145                                         QFont font( txtProperties.namedItem( "font" ).nodeValue() );
 146
 147                                         QDomNode node = txtProperties.namedItem( "font-bold" );
 148                                         if ( !node.isNull() )
 149                                         {
 150                                                 // Old: Bold/Not bold.
 151                                                 font.setBold( node.nodeValue().toInt() );
 152                                         }
 153                                         else
 154                                         {
 155                                                 // New: Font weight (QFont::)
 156                                                 font.setWeight( txtProperties.namedItem( "font-weight" ).nodeValue().toInt() );
 157                                         }
 158
 159                                         //font.setBold(txtProperties.namedItem("font-bold").nodeValue().toInt());
 160                                         font.setItalic( txtProperties.namedItem( "font-italic" ).nodeValue().toInt() );
 161                                         font.setUnderline( txtProperties.namedItem( "font-underline" ).nodeValue().toInt() );
 162                                         // Older Kdenlive version did not store pixel size but point size
 163                                         if ( txtProperties.namedItem( "font-pixel-size" ).isNull() )
 164                                         {
 165                                                 QFont f2;
 166                                                 f2.setPointSize( txtProperties.namedItem( "font-size" ).nodeValue().toInt() );
 167                                                 font.setPixelSize( QFontInfo( f2 ).pixelSize() );
 168                                         }
 169                                         else
 170                                                 font.setPixelSize( txtProperties.namedItem( "font-pixel-size" ).nodeValue().toInt() );
 171                                         QColor col( stringToColor( txtProperties.namedItem( "font-color" ).nodeValue() ) );
 172                                         QGraphicsTextItem *txt;
 173                                         if ( !templateText.isEmpty() )
 174                                         {
 175                                                 QString text = items.item( i ).namedItem( "content" ).firstChild().nodeValue();
 176                                                 text = text.replace( "%s", templateText );
 177                                                 txt = m_scene->addText( text, font );
 178                                         }
 179                                         else txt = m_scene->addText( items.item( i ).namedItem( "content" ).firstChild().nodeValue(), font );
 180                                         txt->setDefaultTextColor( col );
 181                                         txt->setTextInteractionFlags( Qt::NoTextInteraction );
 182                                         if ( txtProperties.namedItem( "alignment" ).isNull() == false )
 183                                         {
 184                                                 txt->setTextWidth( txt->boundingRect().width() );
 185                                                 QTextCursor cur = txt->textCursor();
 186                                                 QTextBlockFormat format = cur.blockFormat();
 187                                                 format.setAlignment(( Qt::Alignment ) txtProperties.namedItem( "alignment" ).nodeValue().toInt() );
 188                                                 cur.select( QTextCursor::Document );
 189                                                 cur.setBlockFormat( format );
 190                                                 txt->setTextCursor( cur );
 191                                                 cur.clearSelection();
 192                                                 txt->setTextCursor( cur );
 193                                         }
 194
 195                                         if ( !txtProperties.namedItem( "kdenlive-axis-x-inverted" ).isNull() )
 196                                         {
 197                                                 //txt->setData(OriginXLeft, txtProperties.namedItem("kdenlive-axis-x-inverted").nodeValue().toInt());
 198                                         }
 199                                         if ( !txtProperties.namedItem( "kdenlive-axis-y-inverted" ).isNull() )
 200                                         {
 201                                                 //txt->setData(OriginYTop, txtProperties.namedItem("kdenlive-axis-y-inverted").nodeValue().toInt());
 202                                         }
 203
 204                                         gitem = txt;
 205                                 }
 206                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsRectItem" )
 207                                 {
 208                                         QString rect = items.item( i ).namedItem( "content" ).attributes().namedItem( "rect" ).nodeValue();
 209                                         QString br_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "brushcolor" ).nodeValue();
 210                                         QString pen_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "pencolor" ).nodeValue();
 211                                         double penwidth = items.item( i ).namedItem( "content" ).attributes().namedItem( "penwidth" ).nodeValue().toDouble();
 212                                         QGraphicsRectItem *rec = m_scene->addRect( stringToRect( rect ), QPen( QBrush( stringToColor( pen_str ) ), penwidth ), QBrush( stringToColor( br_str ) ) );
 213                                         gitem = rec;
 214                                 }
 215                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsPixmapItem" )
 216                                 {
 217                                         QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 218                                         QPixmap pix( url );
 219                                         QGraphicsPixmapItem *rec = m_scene->addPixmap( pix );
 220                                         rec->setData( Qt::UserRole, url );
 221                                         gitem = rec;
 222                                 }
 223                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsSvgItem" )
 224                                 {
 225                                         QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 226                                         //QGraphicsSvgItem *rec = new QGraphicsSvgItem(url);
 227                                         //m_scene->addItem(rec);
 228                                         //rec->setData(Qt::UserRole, url);
 229                                         //gitem = rec;
 230                                 }
 231                         }
 232                         //pos and transform
 233                         if ( gitem )
 234                         {
 235                                 QPointF p( items.item( i ).namedItem( "position" ).attributes().namedItem( "x" ).nodeValue().toDouble(),
 236                                            items.item( i ).namedItem( "position" ).attributes().namedItem( "y" ).nodeValue().toDouble() );
 237                                 gitem->setPos( p );
 238                                 gitem->setTransform( stringToTransform( items.item( i ).namedItem( "position" ).firstChild().firstChild().nodeValue() ) );
 239                                 int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 240                                 if ( zValue > maxZValue ) maxZValue = zValue;
 241                                 gitem->setZValue( zValue );
 242                                 //gitem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 243                         }
 244                         if ( items.item( i ).nodeName() == "background" )
 245                         {
 246                                 QColor color = QColor( stringToColor( items.item( i ).attributes().namedItem( "color" ).nodeValue() ) );
 247                                 //color.setAlpha(items.item(i).attributes().namedItem("alpha").nodeValue().toInt());
 248                                 QList<QGraphicsItem *> items = m_scene->items();
 249                                 for ( int i = 0; i < items.size(); i++ )
 250                                 {
 251                                         if ( items.at( i )->zValue() == -1100 )
 252                                         {
 253                                                 (( QGraphicsRectItem * )items.at( i ) )->setBrush( QBrush( color ) );
 254                                                 break;
 255                                         }
 256                                 }
 257                         }
 258                         else if ( items.item( i ).nodeName() == "startviewport" )
 259                         {
 260                                 QString rect = items.item( i ).attributes().namedItem( "rect" ).nodeValue();
 261                                 m_start = stringToRect( rect );
 262                         }
 263                         else if ( items.item( i ).nodeName() == "endviewport" )
 264                         {
 265                                 QString rect = items.item( i ).attributes().namedItem( "rect" ).nodeValue();
 266                                 m_end = stringToRect( rect );
 267                         }
 268                 }
 269         }
 270         return maxZValue;
 271 }
 272
 273 QString Title::colorToString( const QColor& c )
 274 {
 275         QString ret = "%1,%2,%3,%4";
 276         ret = ret.arg( c.red() ).arg( c.green() ).arg( c.blue() ).arg( c.alpha() );
 277         return ret;
 278 }
 279
 280 QString Title::rectFToString( const QRectF& c )
 281 {
 282         QString ret = "%1,%2,%3,%4";
 283         ret = ret.arg( c.top() ).arg( c.left() ).arg( c.width() ).arg( c.height() );
 284         return ret;
 285 }
 286
 287 QRectF Title::stringToRect( const QString & s )
 288 {
 289
 290         QStringList l = s.split( ',' );
 291         if ( l.size() < 4 )
 292                 return QRectF();
 293         return QRectF( l.at( 0 ).toDouble(), l.at( 1 ).toDouble(), l.at( 2 ).toDouble(), l.at( 3 ).toDouble() ).normalized();
 294 }
 295
 296 QColor Title::stringToColor( const QString & s )
 297 {
 298         QStringList l = s.split( ',' );
 299         if ( l.size() < 4 )
 300                 return QColor();
 301         return QColor( l.at( 0 ).toInt(), l.at( 1 ).toInt(), l.at( 2 ).toInt(), l.at( 3 ).toInt() );
 302         ;
 303 }
 304 QTransform Title::stringToTransform( const QString& s )
 305 {
 306         QStringList l = s.split( ',' );
 307         if ( l.size() < 9 )
 308                 return QTransform();
 309         return QTransform(
 310                    l.at( 0 ).toDouble(), l.at( 1 ).toDouble(), l.at( 2 ).toDouble(),
 311                    l.at( 3 ).toDouble(), l.at( 4 ).toDouble(), l.at( 5 ).toDouble(),
 312                    l.at( 6 ).toDouble(), l.at( 7 ).toDouble(), l.at( 8 ).toDouble()
 313                );
 314 }