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( 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 }
 119
 120 void loadFromXml( mlt_producer producer, QGraphicsScene *scene, const char *templateXml, const char *templateText )
 121 {
 122         if (scene == NULL) {
 123                 mlt_cache_item qscene_cache = mlt_service_cache_get( MLT_PRODUCER_SERVICE( producer ), "qscene" );
 124                 scene = static_cast<QGraphicsScene *>( mlt_cache_item_data( qscene_cache, NULL ) );
 125                 if (scene == NULL) return;
 126         }
 127         scene->clear();
 128         mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
 129         QDomDocument doc;
 130         QString data = QString::fromUtf8(templateXml);
 131         QString replacementText = QString::fromUtf8(templateText);
 132         doc.setContent(data);
 133         QDomNodeList titles = doc.elementsByTagName( "kdenlivetitle" );
 134         int maxZValue = 0;
 135         if ( titles.size() )
 136         {
 137
 138                 QDomNodeList items = titles.item( 0 ).childNodes();
 139                 for ( int i = 0; i < items.count(); i++ )
 140                 {
 141                         QGraphicsItem *gitem = NULL;
 142                         int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 143                         if ( zValue > -1000 )
 144                         {
 145                                 if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsTextItem" )
 146                                 {
 147                                         QDomNamedNodeMap txtProperties = items.item( i ).namedItem( "content" ).attributes();
 148                                         QFont font( txtProperties.namedItem( "font" ).nodeValue() );
 149
 150                                         QDomNode node = txtProperties.namedItem( "font-bold" );
 151                                         if ( !node.isNull() )
 152                                         {
 153                                                 // Old: Bold/Not bold.
 154                                                 font.setBold( node.nodeValue().toInt() );
 155                                         }
 156                                         else
 157                                         {
 158                                                 // New: Font weight (QFont::)
 159                                                 font.setWeight( txtProperties.namedItem( "font-weight" ).nodeValue().toInt() );
 160                                         }
 161
 162                                         //font.setBold(txtProperties.namedItem("font-bold").nodeValue().toInt());
 163                                         font.setItalic( txtProperties.namedItem( "font-italic" ).nodeValue().toInt() );
 164                                         font.setUnderline( txtProperties.namedItem( "font-underline" ).nodeValue().toInt() );
 165                                         // Older Kdenlive version did not store pixel size but point size
 166                                         if ( txtProperties.namedItem( "font-pixel-size" ).isNull() )
 167                                         {
 168                                                 QFont f2;
 169                                                 f2.setPointSize( txtProperties.namedItem( "font-size" ).nodeValue().toInt() );
 170                                                 font.setPixelSize( QFontInfo( f2 ).pixelSize() );
 171                                         }
 172                                         else
 173                                                 font.setPixelSize( txtProperties.namedItem( "font-pixel-size" ).nodeValue().toInt() );
 174                                         QColor col( stringToColor( txtProperties.namedItem( "font-color" ).nodeValue() ) );
 175                                         QGraphicsTextItem *txt;
 176                                         if ( !replacementText.isEmpty() )
 177                                         {
 178                                                 QString text = items.item( i ).namedItem( "content" ).firstChild().nodeValue();
 179                                                 text = text.replace( "%s", replacementText );
 180                                                 txt = scene->addText( text, font );
 181                                         }
 182                                         else txt = scene->addText( items.item( i ).namedItem( "content" ).firstChild().nodeValue(), font );
 183                                         txt->setDefaultTextColor( col );
 184                                         txt->setTextInteractionFlags( Qt::NoTextInteraction );
 185                                         if ( txtProperties.namedItem( "alignment" ).isNull() == false )
 186                                         {
 187                                                 txt->setTextWidth( txt->boundingRect().width() );
 188                                                 QTextCursor cur = txt->textCursor();
 189                                                 QTextBlockFormat format = cur.blockFormat();
 190                                                 format.setAlignment(( Qt::Alignment ) txtProperties.namedItem( "alignment" ).nodeValue().toInt() );
 191                                                 cur.select( QTextCursor::Document );
 192                                                 cur.setBlockFormat( format );
 193                                                 txt->setTextCursor( cur );
 194                                                 cur.clearSelection();
 195                                                 txt->setTextCursor( cur );
 196                                         }
 197
 198                                         if ( !txtProperties.namedItem( "kdenlive-axis-x-inverted" ).isNull() )
 199                                         {
 200                                                 //txt->setData(OriginXLeft, txtProperties.namedItem("kdenlive-axis-x-inverted").nodeValue().toInt());
 201                                         }
 202                                         if ( !txtProperties.namedItem( "kdenlive-axis-y-inverted" ).isNull() )
 203                                         {
 204                                                 //txt->setData(OriginYTop, txtProperties.namedItem("kdenlive-axis-y-inverted").nodeValue().toInt());
 205                                         }
 206
 207                                         gitem = txt;
 208                                 }
 209                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsRectItem" )
 210                                 {
 211                                         QString rect = items.item( i ).namedItem( "content" ).attributes().namedItem( "rect" ).nodeValue();
 212                                         QString br_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "brushcolor" ).nodeValue();
 213                                         QString pen_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "pencolor" ).nodeValue();
 214                                         double penwidth = items.item( i ).namedItem( "content" ).attributes().namedItem( "penwidth" ).nodeValue().toDouble();
 215                                         QGraphicsRectItem *rec = scene->addRect( stringToRect( rect ), QPen( QBrush( stringToColor( pen_str ) ), penwidth ), QBrush( stringToColor( br_str ) ) );
 216                                         gitem = rec;
 217                                 }
 218                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsPixmapItem" )
 219                                 {
 220                                         QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 221                                         QPixmap pix( url );
 222                                         QGraphicsPixmapItem *rec = scene->addPixmap( pix );
 223                                         rec->setData( Qt::UserRole, url );
 224                                         gitem = rec;
 225                                 }
 226                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsSvgItem" )
 227                                 {
 228                                         QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 229                                         //QGraphicsSvgItem *rec = new QGraphicsSvgItem(url);
 230                                         //m_scene->addItem(rec);
 231                                         //rec->setData(Qt::UserRole, url);
 232                                         //gitem = rec;
 233                                 }
 234                         }
 235                         //pos and transform
 236                         if ( gitem )
 237                         {
 238                                 QPointF p( items.item( i ).namedItem( "position" ).attributes().namedItem( "x" ).nodeValue().toDouble(),
 239                                            items.item( i ).namedItem( "position" ).attributes().namedItem( "y" ).nodeValue().toDouble() );
 240                                 gitem->setPos( p );
 241                                 gitem->setTransform( stringToTransform( items.item( i ).namedItem( "position" ).firstChild().firstChild().nodeValue() ) );
 242                                 int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 243                                 if ( zValue > maxZValue ) maxZValue = zValue;
 244                                 gitem->setZValue( zValue );
 245                                 //gitem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 246                         }
 247                         if ( items.item( i ).nodeName() == "background" )
 248                         {
 249                                 QColor color = QColor( stringToColor( items.item( i ).attributes().namedItem( "color" ).nodeValue() ) );
 250                                 //color.setAlpha(items.item(i).attributes().namedItem("alpha").nodeValue().toInt());
 251                                 QList<QGraphicsItem *> items = scene->items();
 252                                 for ( int i = 0; i < items.size(); i++ )
 253                                 {
 254                                         if ( items.at( i )->zValue() == -1100 )
 255                                         {
 256                                                 (( QGraphicsRectItem * )items.at( i ) )->setBrush( QBrush( color ) );
 257                                                 break;
 258                                         }
 259                                 }
 260                         }
 261                         else if ( items.item( i ).nodeName() == "startviewport" )
 262                         {
 263                                 QString rect = items.item( i ).attributes().namedItem( "rect" ).nodeValue();
 264
 265                                 mlt_properties_set( producer_props, "startrect", rect.toUtf8().data() );
 266                         }
 267                         else if ( items.item( i ).nodeName() == "endviewport" )
 268                         {
 269                                 QString rect = items.item( i ).attributes().namedItem( "rect" ).nodeValue();
 270                                 mlt_properties_set( producer_props, "endrect", rect.toUtf8().data() );
 271                         }
 272                 }
 273         }
 274         return;
 275 }
 276
 277 QString colorToString( const QColor& c )
 278 {
 279         QString ret = "%1,%2,%3,%4";
 280         ret = ret.arg( c.red() ).arg( c.green() ).arg( c.blue() ).arg( c.alpha() );
 281         return ret;
 282 }
 283
 284 QString rectFToString( const QRectF& c )
 285 {
 286         QString ret = "%1,%2,%3,%4";
 287         ret = ret.arg( c.top() ).arg( c.left() ).arg( c.width() ).arg( c.height() );
 288         return ret;
 289 }
 290
 291 QRectF stringToRect( const QString & s )
 292 {
 293
 294         QStringList l = s.split( ',' );
 295         if ( l.size() < 4 )
 296                 return QRectF();
 297         return QRectF( l.at( 0 ).toDouble(), l.at( 1 ).toDouble(), l.at( 2 ).toDouble(), l.at( 3 ).toDouble() ).normalized();
 298 }
 299
 300 QColor stringToColor( const QString & s )
 301 {
 302         QStringList l = s.split( ',' );
 303         if ( l.size() < 4 )
 304                 return QColor();
 305         return QColor( l.at( 0 ).toInt(), l.at( 1 ).toInt(), l.at( 2 ).toInt(), l.at( 3 ).toInt() );
 306         ;
 307 }
 308 QTransform stringToTransform( const QString& s )
 309 {
 310         QStringList l = s.split( ',' );
 311         if ( l.size() < 9 )
 312                 return QTransform();
 313         return QTransform(
 314                    l.at( 0 ).toDouble(), l.at( 1 ).toDouble(), l.at( 2 ).toDouble(),
 315                    l.at( 3 ).toDouble(), l.at( 4 ).toDouble(), l.at( 5 ).toDouble(),
 316                    l.at( 6 ).toDouble(), l.at( 7 ).toDouble(), l.at( 8 ).toDouble()
 317                );
 318 }