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                 drawKdenliveTitle( producer, buffer, width, height, position, force_refresh );
  43         }
  44
  45         static void qscene_delete( void *data )
  46         {
  47                 QGraphicsScene *scene = ( QGraphicsScene * )data;
  48                 delete scene;
  49                 scene = NULL;
  50         }
  51 }
  52
  53
  54
  55 void drawKdenliveTitle( mlt_producer producer, uint8_t * buffer, int width, int height, double position, int force_refresh )
  56 {
  57
  58         // restore QGraphicsScene
  59         g_mutex.lock();
  60         mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
  61         QGraphicsScene *scene = static_cast<QGraphicsScene *> (mlt_properties_get_data( producer_props, "qscene", NULL ));
  62
  63         if ( force_refresh == 1 && scene )
  64         {
  65                 scene = NULL;
  66                 mlt_properties_set_data( producer_props, "qscene", NULL, 0, NULL, NULL );
  67         }
  68
  69         if ( scene == NULL )
  70         {
  71                 int argc = 1;
  72                 char* argv[1];
  73                 argv[0] = "xxx";
  74                 if (qApp) {
  75                     app = qApp;
  76                 }
  77                 else {
  78                     app=new QApplication( argc,argv );
  79                 }
  80                 scene = new QGraphicsScene( 0, 0, width, height, app );
  81                 loadFromXml( producer, scene, mlt_properties_get( producer_props, "xmldata" ), mlt_properties_get( producer_props, "templatetext" ), width, height );
  82                 mlt_properties_set_data( producer_props, "qscene", scene, 0, ( mlt_destructor )qscene_delete, NULL );
  83         }
  84
  85         g_mutex.unlock();
  86
  87         //must be extracted from kdenlive title
  88         QImage img( 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 );
  93         //| QPainter::SmoothPixmapTransform );
  94
  95         const QRectF start = stringToRect( QString( mlt_properties_get( producer_props, "startrect" ) ) );
  96         const QRectF end = stringToRect( QString( mlt_properties_get( producer_props, "endrect" ) ) );
  97         const QRectF source( 0, 0, width, height );
  98
  99         if (end.isNull()) {
 100                 if (start.isNull())
 101                         scene->render( &p1, source, source );
 102                 else
 103                         scene->render( &p1, start, source );
 104         }
 105         else {
 106             QPointF topleft = start.topLeft() + ( end.topLeft() - start.topLeft() ) * position;
 107             QPointF bottomRight = start.bottomRight() + ( end.bottomRight() - start.bottomRight() ) * position;
 108             const QRectF r1( topleft, bottomRight );
 109             scene->render( &p1, r1, source );
 110         }
 111         p1.end();
 112         uint8_t *pointer=img.bits();
 113         QRgb* src = ( QRgb* ) pointer;
 114         for ( int i = 0; i < width * height * 4; i += 4 )
 115         {
 116                 *buffer++=qRed( *src );
 117                 *buffer++=qGreen( *src );
 118                 *buffer++=qBlue( *src );
 119                 *buffer++=qAlpha( *src );
 120                 src++;
 121         }
 122 }
 123
 124 void loadFromXml( mlt_producer producer, QGraphicsScene *scene, const char *templateXml, const char *templateText, int width, int height  )
 125 {
 126         scene->clear();
 127         mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
 128         QDomDocument doc;
 129         QString data = QString::fromUtf8(templateXml);
 130         QString replacementText = QString::fromUtf8(templateText);
 131         doc.setContent(data);
 132         QDomNodeList titles = doc.elementsByTagName( "kdenlivetitle" );
 133         QTransform transform;
 134         if ( doc.documentElement().hasAttribute("width") ) {
 135             int originalWidth = doc.documentElement().attribute("width").toInt();
 136             int originalHeight = doc.documentElement().attribute("height").toInt();
 137             if (originalWidth != width || originalHeight != height) {
 138 #if QT_VERSION < 0x40500
 139             transform = QTransform().scale(  (double) width / originalWidth, (double) height / originalHeight );
 140 #else
 141                     transform = QTransform::fromScale ( (double) width / originalWidth, (double) height / originalHeight);
 142 #endif
 143             }
 144         }
 145         if ( titles.size() )
 146         {
 147
 148                 QDomNodeList items = titles.item( 0 ).childNodes();
 149                 for ( int i = 0; i < items.count(); i++ )
 150                 {
 151                         QGraphicsItem *gitem = NULL;
 152                         int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 153                         if ( zValue > -1000 )
 154                         {
 155                                 if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsTextItem" )
 156                                 {
 157                                         QDomNamedNodeMap txtProperties = items.item( i ).namedItem( "content" ).attributes();
 158                                         QFont font( txtProperties.namedItem( "font" ).nodeValue() );
 159
 160                                         QDomNode node = txtProperties.namedItem( "font-bold" );
 161                                         if ( !node.isNull() )
 162                                         {
 163                                                 // Old: Bold/Not bold.
 164                                                 font.setBold( node.nodeValue().toInt() );
 165                                         }
 166                                         else
 167                                         {
 168                                                 // New: Font weight (QFont::)
 169                                                 font.setWeight( txtProperties.namedItem( "font-weight" ).nodeValue().toInt() );
 170                                         }
 171
 172                                         //font.setBold(txtProperties.namedItem("font-bold").nodeValue().toInt());
 173                                         font.setItalic( txtProperties.namedItem( "font-italic" ).nodeValue().toInt() );
 174                                         font.setUnderline( txtProperties.namedItem( "font-underline" ).nodeValue().toInt() );
 175                                         // Older Kdenlive version did not store pixel size but point size
 176                                         if ( txtProperties.namedItem( "font-pixel-size" ).isNull() )
 177                                         {
 178                                                 QFont f2;
 179                                                 f2.setPointSize( txtProperties.namedItem( "font-size" ).nodeValue().toInt() );
 180                                                 font.setPixelSize( QFontInfo( f2 ).pixelSize() );
 181                                         }
 182                                         else
 183                                                 font.setPixelSize( txtProperties.namedItem( "font-pixel-size" ).nodeValue().toInt() );
 184                                         QColor col( stringToColor( txtProperties.namedItem( "font-color" ).nodeValue() ) );
 185                                         QGraphicsTextItem *txt;
 186                                         if ( !replacementText.isEmpty() )
 187                                         {
 188                                                 QString text = items.item( i ).namedItem( "content" ).firstChild().nodeValue();
 189                                                 text = text.replace( "%s", replacementText );
 190                                                 txt = scene->addText( text, font );
 191                                         }
 192                                         else txt = scene->addText( items.item( i ).namedItem( "content" ).firstChild().nodeValue(), font );
 193                                         txt->setDefaultTextColor( col );
 194                                         txt->setTextInteractionFlags( Qt::NoTextInteraction );
 195                                         if ( txtProperties.namedItem( "alignment" ).isNull() == false )
 196                                         {
 197                                                 txt->setTextWidth( txt->boundingRect().width() );
 198                                                 QTextCursor cur = txt->textCursor();
 199                                                 QTextBlockFormat format = cur.blockFormat();
 200                                                 format.setAlignment(( Qt::Alignment ) txtProperties.namedItem( "alignment" ).nodeValue().toInt() );
 201                                                 cur.select( QTextCursor::Document );
 202                                                 cur.setBlockFormat( format );
 203                                                 txt->setTextCursor( cur );
 204                                                 cur.clearSelection();
 205                                                 txt->setTextCursor( cur );
 206                                         }
 207
 208                                         if ( !txtProperties.namedItem( "kdenlive-axis-x-inverted" ).isNull() )
 209                                         {
 210                                                 //txt->setData(OriginXLeft, txtProperties.namedItem("kdenlive-axis-x-inverted").nodeValue().toInt());
 211                                         }
 212                                         if ( !txtProperties.namedItem( "kdenlive-axis-y-inverted" ).isNull() )
 213                                         {
 214                                                 //txt->setData(OriginYTop, txtProperties.namedItem("kdenlive-axis-y-inverted").nodeValue().toInt());
 215                                         }
 216
 217                                         gitem = txt;
 218                                 }
 219                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsRectItem" )
 220                                 {
 221                                         QString rect = items.item( i ).namedItem( "content" ).attributes().namedItem( "rect" ).nodeValue();
 222                                         QString br_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "brushcolor" ).nodeValue();
 223                                         QString pen_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "pencolor" ).nodeValue();
 224                                         double penwidth = items.item( i ).namedItem( "content" ).attributes().namedItem( "penwidth" ).nodeValue().toDouble();
 225                                         QGraphicsRectItem *rec = scene->addRect( stringToRect( rect ), QPen( QBrush( stringToColor( pen_str ) ), penwidth ), QBrush( stringToColor( br_str ) ) );
 226                                         gitem = rec;
 227                                 }
 228                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsPixmapItem" )
 229                                 {
 230                                         QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 231                                         QPixmap pix( url );
 232                                         QGraphicsPixmapItem *rec = scene->addPixmap( pix );
 233                                         rec->setData( Qt::UserRole, url );
 234                                         gitem = rec;
 235                                 }
 236                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsSvgItem" )
 237                                 {
 238                                         QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 239                                         //QGraphicsSvgItem *rec = new QGraphicsSvgItem(url);
 240                                         //m_scene->addItem(rec);
 241                                         //rec->setData(Qt::UserRole, url);
 242                                         //gitem = rec;
 243                                 }
 244                         }
 245                         //pos and transform
 246                         if ( gitem )
 247                         {
 248                                 QPointF p( items.item( i ).namedItem( "position" ).attributes().namedItem( "x" ).nodeValue().toDouble(),
 249                                            items.item( i ).namedItem( "position" ).attributes().namedItem( "y" ).nodeValue().toDouble() );
 250                                 if ( transform != QTransform() ) p = QPointF(p.x() * transform.m11(), p.y() * transform.m22());
 251                                 gitem->setPos( p );
 252                                 gitem->setTransform( stringToTransform( items.item( i ).namedItem( "position" ).firstChild().firstChild().nodeValue() ) );
 253                                 int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 254                                 gitem->setZValue( zValue );
 255                                 if ( transform != QTransform() ) gitem->setTransform( transform, true );
 256                                 //gitem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 257                         }
 258                         if ( items.item( i ).nodeName() == "background" )
 259                         {
 260                                 QColor color = QColor( stringToColor( items.item( i ).attributes().namedItem( "color" ).nodeValue() ) );
 261                                 //color.setAlpha(items.item(i).attributes().namedItem("alpha").nodeValue().toInt());
 262                                 QList<QGraphicsItem *> items = scene->items();
 263                                 for ( int i = 0; i < items.size(); i++ )
 264                                 {
 265                                         if ( items.at( i )->zValue() == -1100 )
 266                                         {
 267                                                 (( QGraphicsRectItem * )items.at( i ) )->setBrush( QBrush( color ) );
 268                                                 break;
 269                                         }
 270                                 }
 271                         }
 272                         else if ( items.item( i ).nodeName() == "startviewport" )
 273                         {
 274                                 QString rect = items.item( i ).attributes().namedItem( "rect" ).nodeValue();
 275                                 if ( transform != QTransform() ) {
 276                                     rect = rectTransform( rect, transform );
 277                                 }
 278                                 mlt_properties_set( producer_props, "startrect", rect.toUtf8().data() );
 279                         }
 280                         else if ( items.item( i ).nodeName() == "endviewport" )
 281                         {
 282                                 QString rect = items.item( i ).attributes().namedItem( "rect" ).nodeValue();
 283                                 if ( transform != QTransform() ) {
 284                                     rect = rectTransform( rect, transform );
 285                                 }
 286                                 mlt_properties_set( producer_props, "endrect", rect.toUtf8().data() );
 287                         }
 288                 }
 289         }
 290         if ( mlt_properties_get( producer_props, "startrect") == mlt_properties_get( producer_props, "endrect") )
 291                 mlt_properties_set( producer_props, "endrect", "" );
 292         return;
 293 }
 294
 295 QString rectTransform( QString s, QTransform t )
 296 {
 297         QStringList l = s.split( ',' );
 298         return QString::number(l.at(0).toDouble() * t.m11()) + ',' + QString::number(l.at(1).toDouble() * t.m22()) + ',' + QString::number(l.at(2).toDouble() * t.m11()) + ',' + QString::number(l.at(3).toDouble() * t.m22());
 299 }
 300
 301 QString colorToString( const QColor& c )
 302 {
 303         QString ret = "%1,%2,%3,%4";
 304         ret = ret.arg( c.red() ).arg( c.green() ).arg( c.blue() ).arg( c.alpha() );
 305         return ret;
 306 }
 307
 308 QString rectFToString( const QRectF& c )
 309 {
 310         QString ret = "%1,%2,%3,%4";
 311         ret = ret.arg( c.top() ).arg( c.left() ).arg( c.width() ).arg( c.height() );
 312         return ret;
 313 }
 314
 315 QRectF stringToRect( const QString & s )
 316 {
 317
 318         QStringList l = s.split( ',' );
 319         if ( l.size() < 4 )
 320                 return QRectF();
 321         return QRectF( l.at( 0 ).toDouble(), l.at( 1 ).toDouble(), l.at( 2 ).toDouble(), l.at( 3 ).toDouble() ).normalized();
 322 }
 323
 324 QColor stringToColor( const QString & s )
 325 {
 326         QStringList l = s.split( ',' );
 327         if ( l.size() < 4 )
 328                 return QColor();
 329         return QColor( l.at( 0 ).toInt(), l.at( 1 ).toInt(), l.at( 2 ).toInt(), l.at( 3 ).toInt() );
 330         ;
 331 }
 332 QTransform stringToTransform( const QString& s )
 333 {
 334         QStringList l = s.split( ',' );
 335         if ( l.size() < 9 )
 336                 return QTransform();
 337         return QTransform(
 338                    l.at( 0 ).toDouble(), l.at( 1 ).toDouble(), l.at( 2 ).toDouble(),
 339                    l.at( 3 ).toDouble(), l.at( 4 ).toDouble(), l.at( 5 ).toDouble(),
 340                    l.at( 6 ).toDouble(), l.at( 7 ).toDouble(), l.at( 8 ).toDouble()
 341                );
 342 }