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 "kdenlivetitle_wrapper.h"
  21
  22 #include <QtGui/QImage>
  23 #include <QtGui/QPainter>
  24 #include <QtCore/QDebug>
  25 #include <QtGui/QApplication>
  26 #include <QtCore/QMutex>
  27 #include <QtGui/QGraphicsScene>
  28 #include <QtGui/QGraphicsTextItem>
  29 #include <QtGui/QTextCursor>
  30
  31 static QApplication *app = NULL;
  32
  33 extern "C"
  34 {
  35
  36 #include <framework/mlt_producer.h>
  37 #include <framework/mlt_cache.h>
  38
  39         static QMutex g_mutex;
  40         void refresh_kdenlivetitle( mlt_producer producer, uint8_t* buffer, int width, int height , double position, int force_refresh )
  41         {
  42                 if (force_refresh) {
  43                         mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
  44                         loadFromXml( producer, NULL, mlt_properties_get( producer_props, "xmldata" ), mlt_properties_get( producer_props, "templatetext" ) );
  45                 }
  46                 drawKdenliveTitle( producer, buffer, width, height, position );
  47         }
  48
  49         static void qscene_delete( void *data )
  50         {
  51                 QGraphicsScene *scene = ( QGraphicsScene * )data;
  52                 delete scene;
  53                 scene = NULL;
  54         }
  55 }
  56
  57
  58
  59 void drawKdenliveTitle( mlt_producer producer, uint8_t * buffer, int width, int height, double position )
  60 {
  61
  62         // restore QGraphicsScene
  63         g_mutex.lock();
  64         mlt_cache_item qscene_cache = mlt_service_cache_get( MLT_PRODUCER_SERVICE( producer ), "qscene" );
  65         QGraphicsScene *scene = static_cast<QGraphicsScene *>( mlt_cache_item_data( qscene_cache, NULL ) );
  66         mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
  67
  68         if ( scene == NULL )
  69         {
  70                 int argc = 1;
  71                 char* argv[1];
  72                 argv[0] = "xxx";
  73                 if (qApp) {
  74                     app = qApp;
  75                 }
  76                 else {
  77                     app=new QApplication( argc,argv );
  78                 }
  79                 scene = new QGraphicsScene(0, 0, (qreal) width, (qreal) height, app);
  80                 loadFromXml( producer, scene, mlt_properties_get( producer_props, "xmldata" ), mlt_properties_get( producer_props, "templatetext" ) );
  81                 mlt_service_cache_put( MLT_PRODUCER_SERVICE( producer ), "qscene", scene, 0, ( mlt_destructor )qscene_delete );
  82         }
  83
  84         g_mutex.unlock();
  85
  86         //must be extracted from kdenlive title
  87         QImage *img = new QImage( width,height,QImage::Format_ARGB32 );
  88         img->fill( 0 );
  89         QPainter p1;
  90         p1.begin( img );
  91         p1.setRenderHints( QPainter::Antialiasing | QPainter::TextAntialiasing | QPainter::HighQualityAntialiasing );
  92         //| QPainter::SmoothPixmapTransform );
  93
  94         QRectF m_start = stringToRect( QString( mlt_properties_get( producer_props, "startrect" ) ) );
  95         QRectF m_end = stringToRect( QString( mlt_properties_get( producer_props, "endrect" ) ) );
  96
  97         if (m_start.isNull() && m_end.isNull()) {
  98             scene->render( &p1 );
  99         }
 100         else {
 101             QPointF topleft=m_start.topLeft()+( m_end.topLeft()-m_start.topLeft() )*position;
 102             QPointF bottomRight=m_start.bottomRight()+( m_end.bottomRight()-m_start.bottomRight() )*position;
 103             const QRectF r1( 0, 0, width, height );
 104             const QRectF r2( topleft, bottomRight );
 105             scene->render( &p1, r1, r2 );
 106         }
 107         p1.end();
 108         uint8_t *pointer=img->bits();
 109         QRgb* src = ( QRgb* ) pointer;
 110         for ( int i = 0; i < width * height * 4; i += 4 )
 111         {
 112                 *buffer++=qRed( *src );
 113                 *buffer++=qGreen( *src );
 114                 *buffer++=qBlue( *src );
 115                 *buffer++=qAlpha( *src );
 116                 src++;
 117         }
 118         delete img;
 119 }
 120
 121 void loadFromXml( mlt_producer producer, QGraphicsScene *scene, const char *templateXml, const char *templateText )
 122 {
 123         if (scene == NULL) {
 124                 mlt_cache_item qscene_cache = mlt_service_cache_get( MLT_PRODUCER_SERVICE( producer ), "qscene" );
 125                 scene = static_cast<QGraphicsScene *>( mlt_cache_item_data( qscene_cache, NULL ) );
 126                 if (scene == NULL) return;
 127         }
 128         scene->clear();
 129         mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
 130         QDomDocument doc;
 131         QString data(templateXml);
 132         QString replacementText(templateText);
 133         doc.setContent(data);
 134         QDomNodeList titles = doc.elementsByTagName( "kdenlivetitle" );
 135         int maxZValue = 0;
 136         if ( titles.size() )
 137         {
 138
 139                 QDomNodeList items = titles.item( 0 ).childNodes();
 140                 for ( int i = 0; i < items.count(); i++ )
 141                 {
 142                         QGraphicsItem *gitem = NULL;
 143                         int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 144                         if ( zValue > -1000 )
 145                         {
 146                                 if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsTextItem" )
 147                                 {
 148                                         QDomNamedNodeMap txtProperties = items.item( i ).namedItem( "content" ).attributes();
 149                                         QFont font( txtProperties.namedItem( "font" ).nodeValue() );
 150
 151                                         QDomNode node = txtProperties.namedItem( "font-bold" );
 152                                         if ( !node.isNull() )
 153                                         {
 154                                                 // Old: Bold/Not bold.
 155                                                 font.setBold( node.nodeValue().toInt() );
 156                                         }
 157                                         else
 158                                         {
 159                                                 // New: Font weight (QFont::)
 160                                                 font.setWeight( txtProperties.namedItem( "font-weight" ).nodeValue().toInt() );
 161                                         }
 162
 163                                         //font.setBold(txtProperties.namedItem("font-bold").nodeValue().toInt());
 164                                         font.setItalic( txtProperties.namedItem( "font-italic" ).nodeValue().toInt() );
 165                                         font.setUnderline( txtProperties.namedItem( "font-underline" ).nodeValue().toInt() );
 166                                         // Older Kdenlive version did not store pixel size but point size
 167                                         if ( txtProperties.namedItem( "font-pixel-size" ).isNull() )
 168                                         {
 169                                                 QFont f2;
 170                                                 f2.setPointSize( txtProperties.namedItem( "font-size" ).nodeValue().toInt() );
 171                                                 font.setPixelSize( QFontInfo( f2 ).pixelSize() );
 172                                         }
 173                                         else
 174                                                 font.setPixelSize( txtProperties.namedItem( "font-pixel-size" ).nodeValue().toInt() );
 175                                         QColor col( stringToColor( txtProperties.namedItem( "font-color" ).nodeValue() ) );
 176                                         QGraphicsTextItem *txt;
 177                                         if ( !replacementText.isEmpty() )
 178                                         {
 179                                                 QString text = items.item( i ).namedItem( "content" ).firstChild().nodeValue();
 180                                                 text = text.replace( "%s", replacementText );
 181                                                 txt = scene->addText( text, font );
 182                                         }
 183                                         else txt = scene->addText( items.item( i ).namedItem( "content" ).firstChild().nodeValue(), font );
 184                                         txt->setDefaultTextColor( col );
 185                                         txt->setTextInteractionFlags( Qt::NoTextInteraction );
 186                                         if ( txtProperties.namedItem( "alignment" ).isNull() == false )
 187                                         {
 188                                                 txt->setTextWidth( txt->boundingRect().width() );
 189                                                 QTextCursor cur = txt->textCursor();
 190                                                 QTextBlockFormat format = cur.blockFormat();
 191                                                 format.setAlignment(( Qt::Alignment ) txtProperties.namedItem( "alignment" ).nodeValue().toInt() );
 192                                                 cur.select( QTextCursor::Document );
 193                                                 cur.setBlockFormat( format );
 194                                                 txt->setTextCursor( cur );
 195                                                 cur.clearSelection();
 196                                                 txt->setTextCursor( cur );
 197                                         }
 198
 199                                         if ( !txtProperties.namedItem( "kdenlive-axis-x-inverted" ).isNull() )
 200                                         {
 201                                                 //txt->setData(OriginXLeft, txtProperties.namedItem("kdenlive-axis-x-inverted").nodeValue().toInt());
 202                                         }
 203                                         if ( !txtProperties.namedItem( "kdenlive-axis-y-inverted" ).isNull() )
 204                                         {
 205                                                 //txt->setData(OriginYTop, txtProperties.namedItem("kdenlive-axis-y-inverted").nodeValue().toInt());
 206                                         }
 207
 208                                         gitem = txt;
 209                                 }
 210                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsRectItem" )
 211                                 {
 212                                         QString rect = items.item( i ).namedItem( "content" ).attributes().namedItem( "rect" ).nodeValue();
 213                                         QString br_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "brushcolor" ).nodeValue();
 214                                         QString pen_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "pencolor" ).nodeValue();
 215                                         double penwidth = items.item( i ).namedItem( "content" ).attributes().namedItem( "penwidth" ).nodeValue().toDouble();
 216                                         QGraphicsRectItem *rec = scene->addRect( stringToRect( rect ), QPen( QBrush( stringToColor( pen_str ) ), penwidth ), QBrush( stringToColor( br_str ) ) );
 217                                         gitem = rec;
 218                                 }
 219                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsPixmapItem" )
 220                                 {
 221                                         QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 222                                         QPixmap pix( url );
 223                                         QGraphicsPixmapItem *rec = scene->addPixmap( pix );
 224                                         rec->setData( Qt::UserRole, url );
 225                                         gitem = rec;
 226                                 }
 227                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsSvgItem" )
 228                                 {
 229                                         QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 230                                         //QGraphicsSvgItem *rec = new QGraphicsSvgItem(url);
 231                                         //m_scene->addItem(rec);
 232                                         //rec->setData(Qt::UserRole, url);
 233                                         //gitem = rec;
 234                                 }
 235                         }
 236                         //pos and transform
 237                         if ( gitem )
 238                         {
 239                                 QPointF p( items.item( i ).namedItem( "position" ).attributes().namedItem( "x" ).nodeValue().toDouble(),
 240                                            items.item( i ).namedItem( "position" ).attributes().namedItem( "y" ).nodeValue().toDouble() );
 241                                 gitem->setPos( p );
 242                                 gitem->setTransform( stringToTransform( items.item( i ).namedItem( "position" ).firstChild().firstChild().nodeValue() ) );
 243                                 int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 244                                 if ( zValue > maxZValue ) maxZValue = zValue;
 245                                 gitem->setZValue( zValue );
 246                                 //gitem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 247                         }
 248                         if ( items.item( i ).nodeName() == "background" )
 249                         {
 250                                 QColor color = QColor( stringToColor( items.item( i ).attributes().namedItem( "color" ).nodeValue() ) );
 251                                 //color.setAlpha(items.item(i).attributes().namedItem("alpha").nodeValue().toInt());
 252                                 QList<QGraphicsItem *> items = scene->items();
 253                                 for ( int i = 0; i < items.size(); i++ )
 254                                 {
 255                                         if ( items.at( i )->zValue() == -1100 )
 256                                         {
 257                                                 (( QGraphicsRectItem * )items.at( i ) )->setBrush( QBrush( color ) );
 258                                                 break;
 259                                         }
 260                                 }
 261                         }
 262                         else if ( items.item( i ).nodeName() == "startviewport" )
 263                         {
 264                                 QString rect = items.item( i ).attributes().namedItem( "rect" ).nodeValue();
 265
 266                                 mlt_properties_set( producer_props, "startrect", rect.toUtf8().data() );
 267                         }
 268                         else if ( items.item( i ).nodeName() == "endviewport" )
 269                         {
 270                                 QString rect = items.item( i ).attributes().namedItem( "rect" ).nodeValue();
 271                                 mlt_properties_set( producer_props, "endrect", rect.toUtf8().data() );
 272                         }
 273                 }
 274         }
 275         return;
 276 }
 277
 278 QString colorToString( const QColor& c )
 279 {
 280         QString ret = "%1,%2,%3,%4";
 281         ret = ret.arg( c.red() ).arg( c.green() ).arg( c.blue() ).arg( c.alpha() );
 282         return ret;
 283 }
 284
 285 QString rectFToString( const QRectF& c )
 286 {
 287         QString ret = "%1,%2,%3,%4";
 288         ret = ret.arg( c.top() ).arg( c.left() ).arg( c.width() ).arg( c.height() );
 289         return ret;
 290 }
 291
 292 QRectF stringToRect( const QString & s )
 293 {
 294
 295         QStringList l = s.split( ',' );
 296         if ( l.size() < 4 )
 297                 return QRectF();
 298         return QRectF( l.at( 0 ).toDouble(), l.at( 1 ).toDouble(), l.at( 2 ).toDouble(), l.at( 3 ).toDouble() ).normalized();
 299 }
 300
 301 QColor stringToColor( const QString & s )
 302 {
 303         QStringList l = s.split( ',' );
 304         if ( l.size() < 4 )
 305                 return QColor();
 306         return QColor( l.at( 0 ).toInt(), l.at( 1 ).toInt(), l.at( 2 ).toInt(), l.at( 3 ).toInt() );
 307         ;
 308 }
 309 QTransform stringToTransform( const QString& s )
 310 {
 311         QStringList l = s.split( ',' );
 312         if ( l.size() < 9 )
 313                 return QTransform();
 314         return QTransform(
 315                    l.at( 0 ).toDouble(), l.at( 1 ).toDouble(), l.at( 2 ).toDouble(),
 316                    l.at( 3 ).toDouble(), l.at( 4 ).toDouble(), l.at( 5 ).toDouble(),
 317                    l.at( 6 ).toDouble(), l.at( 7 ).toDouble(), l.at( 8 ).toDouble()
 318                );
 319 }