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