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  * Copyright (c) 2009 Jean-Baptiste Mardelle <jb@kdenlive.org>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  19  */
  20
  21 #include "kdenlivetitle_wrapper.h"
  22
  23 #include <QtGui/QImage>
  24 #include <QtGui/QPainter>
  25 #include <QtCore/QDebug>
  26 #include <QtGui/QApplication>
  27 #include <QtCore/QMutex>
  28 #include <QtGui/QGraphicsScene>
  29 #include <QtGui/QGraphicsTextItem>
  30 #include <QtGui/QTextCursor>
  31 #include <QtGui/QStyleOptionGraphicsItem>
  32
  33 static QApplication *app = NULL;
  34
  35 extern "C"
  36 {
  37
  38 #include <framework/mlt_producer.h>
  39 #include <framework/mlt_cache.h>
  40
  41         static QMutex g_mutex;
  42         void refresh_kdenlivetitle( mlt_producer producer, uint8_t* buffer, int width, int height , double position, int force_refresh )
  43         {
  44                 drawKdenliveTitle( producer, buffer, width, height, position, force_refresh );
  45         }
  46
  47         static void qscene_delete( void *data )
  48         {
  49                 QGraphicsScene *scene = ( QGraphicsScene * )data;
  50                 delete scene;
  51                 scene = NULL;
  52         }
  53 }
  54
  55
  56 class ImageItem: public QGraphicsRectItem
  57 {
  58 public:
  59     ImageItem(QImage img)
  60     {
  61         m_img = img;
  62     }
  63
  64     QImage m_img;
  65
  66 protected:
  67 virtual void paint( QPainter *painter,
  68                        const QStyleOptionGraphicsItem *option,
  69                        QWidget* )
  70 {
  71    //todo: clip rect ?
  72    painter->drawImage(QPointF(), m_img);
  73    //painter->fillRect(option->exposedRect, QBrush(QColor(0,255,0)));
  74 }
  75
  76
  77 };
  78
  79
  80 void drawKdenliveTitle( mlt_producer producer, uint8_t * buffer, int width, int height, double position, int force_refresh )
  81 {
  82
  83         // restore QGraphicsScene
  84         g_mutex.lock();
  85         mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
  86         QGraphicsScene *scene = static_cast<QGraphicsScene *> (mlt_properties_get_data( producer_props, "qscene", NULL ));
  87
  88         if ( force_refresh == 1 && scene )
  89         {
  90                 scene = NULL;
  91                 mlt_properties_set_data( producer_props, "qscene", NULL, 0, NULL, NULL );
  92         }
  93
  94         if ( scene == NULL )
  95         {
  96                 int argc = 1;
  97                 char* argv[1];
  98                 argv[0] = "xxx";
  99                 if (qApp) {
 100                     app = qApp;
 101                 }
 102                 else {
 103                     app=new QApplication( argc,argv );
 104                 }
 105                 scene = new QGraphicsScene( 0, 0, width, height, app );
 106                 loadFromXml( producer, scene, mlt_properties_get( producer_props, "xmldata" ), mlt_properties_get( producer_props, "templatetext" ), width, height );
 107                 mlt_properties_set_data( producer_props, "qscene", scene, 0, ( mlt_destructor )qscene_delete, NULL );
 108         }
 109
 110         g_mutex.unlock();
 111
 112         //must be extracted from kdenlive title
 113         QImage img( width, height, QImage::Format_ARGB32 );
 114         img.fill( 0 );
 115         QPainter p1;
 116         p1.begin( &img );
 117         p1.setRenderHints( QPainter::Antialiasing | QPainter::TextAntialiasing | QPainter::HighQualityAntialiasing );
 118         //| QPainter::SmoothPixmapTransform );
 119
 120         const QRectF start = stringToRect( QString( mlt_properties_get( producer_props, "startrect" ) ) );
 121         const QRectF end = stringToRect( QString( mlt_properties_get( producer_props, "endrect" ) ) );
 122         const QRectF source( 0, 0, width, height );
 123
 124         if (end.isNull()) {
 125                 if (start.isNull())
 126                         scene->render( &p1, source, source );
 127                 else
 128                         scene->render( &p1, start, source );
 129         }
 130         else {
 131             QPointF topleft = start.topLeft() + ( end.topLeft() - start.topLeft() ) * position;
 132             QPointF bottomRight = start.bottomRight() + ( end.bottomRight() - start.bottomRight() ) * position;
 133             const QRectF r1( topleft, bottomRight );
 134             scene->render( &p1, r1, source );
 135         }
 136         p1.end();
 137         uint8_t *pointer=img.bits();
 138         QRgb* src = ( QRgb* ) pointer;
 139         for ( int i = 0; i < width * height * 4; i += 4 )
 140         {
 141                 *buffer++=qRed( *src );
 142                 *buffer++=qGreen( *src );
 143                 *buffer++=qBlue( *src );
 144                 *buffer++=qAlpha( *src );
 145                 src++;
 146         }
 147 }
 148
 149 void loadFromXml( mlt_producer producer, QGraphicsScene *scene, const char *templateXml, const char *templateText, int width, int height  )
 150 {
 151         scene->clear();
 152         mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
 153         QDomDocument doc;
 154         QString data = QString::fromUtf8(templateXml);
 155         QString replacementText = QString::fromUtf8(templateText);
 156         doc.setContent(data);
 157         QDomNodeList titles = doc.elementsByTagName( "kdenlivetitle" );
 158         QTransform transform;
 159         if ( doc.documentElement().hasAttribute("width") ) {
 160             int originalWidth = doc.documentElement().attribute("width").toInt();
 161             int originalHeight = doc.documentElement().attribute("height").toInt();
 162             if (originalWidth != width || originalHeight != height) {
 163 #if QT_VERSION < 0x40500
 164                     transform = QTransform().scale(  (double) width / originalWidth, (double) height / originalHeight );
 165 #else
 166                     transform = QTransform::fromScale ( (double) width / originalWidth, (double) height / originalHeight);
 167 #endif
 168             }
 169         }
 170         if ( titles.size() )
 171         {
 172
 173                 QDomNodeList items = titles.item( 0 ).childNodes();
 174                 for ( int i = 0; i < items.count(); i++ )
 175                 {
 176                         QGraphicsItem *gitem = NULL;
 177                         int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 178                         if ( zValue > -1000 )
 179                         {
 180                                 if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsTextItem" )
 181                                 {
 182                                         QDomNamedNodeMap txtProperties = items.item( i ).namedItem( "content" ).attributes();
 183                                         QFont font( txtProperties.namedItem( "font" ).nodeValue() );
 184
 185                                         QDomNode node = txtProperties.namedItem( "font-bold" );
 186                                         if ( !node.isNull() )
 187                                         {
 188                                                 // Old: Bold/Not bold.
 189                                                 font.setBold( node.nodeValue().toInt() );
 190                                         }
 191                                         else
 192                                         {
 193                                                 // New: Font weight (QFont::)
 194                                                 font.setWeight( txtProperties.namedItem( "font-weight" ).nodeValue().toInt() );
 195                                         }
 196
 197                                         //font.setBold(txtProperties.namedItem("font-bold").nodeValue().toInt());
 198                                         font.setItalic( txtProperties.namedItem( "font-italic" ).nodeValue().toInt() );
 199                                         font.setUnderline( txtProperties.namedItem( "font-underline" ).nodeValue().toInt() );
 200                                         // Older Kdenlive version did not store pixel size but point size
 201                                         if ( txtProperties.namedItem( "font-pixel-size" ).isNull() )
 202                                         {
 203                                                 QFont f2;
 204                                                 f2.setPointSize( txtProperties.namedItem( "font-size" ).nodeValue().toInt() );
 205                                                 font.setPixelSize( QFontInfo( f2 ).pixelSize() );
 206                                         }
 207                                         else
 208                                                 font.setPixelSize( txtProperties.namedItem( "font-pixel-size" ).nodeValue().toInt() );
 209                                         QColor col( stringToColor( txtProperties.namedItem( "font-color" ).nodeValue() ) );
 210                                         QGraphicsTextItem *txt;
 211                                         if ( !replacementText.isEmpty() )
 212                                         {
 213                                                 QString text = items.item( i ).namedItem( "content" ).firstChild().nodeValue();
 214                                                 text = text.replace( "%s", replacementText );
 215                                                 txt = scene->addText( text, font );
 216                                         }
 217                                         else txt = scene->addText( items.item( i ).namedItem( "content" ).firstChild().nodeValue(), font );
 218                                         txt->setDefaultTextColor( col );
 219                                         txt->setTextInteractionFlags( Qt::NoTextInteraction );
 220                                         if ( txtProperties.namedItem( "alignment" ).isNull() == false )
 221                                         {
 222                                                 txt->setTextWidth( txt->boundingRect().width() );
 223                                                 QTextCursor cur = txt->textCursor();
 224                                                 QTextBlockFormat format = cur.blockFormat();
 225                                                 format.setAlignment(( Qt::Alignment ) txtProperties.namedItem( "alignment" ).nodeValue().toInt() );
 226                                                 cur.select( QTextCursor::Document );
 227                                                 cur.setBlockFormat( format );
 228                                                 txt->setTextCursor( cur );
 229                                                 cur.clearSelection();
 230                                                 txt->setTextCursor( cur );
 231                                         }
 232
 233                                         if ( !txtProperties.namedItem( "kdenlive-axis-x-inverted" ).isNull() )
 234                                         {
 235                                                 //txt->setData(OriginXLeft, txtProperties.namedItem("kdenlive-axis-x-inverted").nodeValue().toInt());
 236                                         }
 237                                         if ( !txtProperties.namedItem( "kdenlive-axis-y-inverted" ).isNull() )
 238                                         {
 239                                                 //txt->setData(OriginYTop, txtProperties.namedItem("kdenlive-axis-y-inverted").nodeValue().toInt());
 240                                         }
 241
 242                                         gitem = txt;
 243                                 }
 244                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsRectItem" )
 245                                 {
 246                                         QString rect = items.item( i ).namedItem( "content" ).attributes().namedItem( "rect" ).nodeValue();
 247                                         QString br_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "brushcolor" ).nodeValue();
 248                                         QString pen_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "pencolor" ).nodeValue();
 249                                         double penwidth = items.item( i ).namedItem( "content" ).attributes().namedItem( "penwidth" ).nodeValue().toDouble();
 250                                         QGraphicsRectItem *rec = scene->addRect( stringToRect( rect ), QPen( QBrush( stringToColor( pen_str ) ), penwidth ), QBrush( stringToColor( br_str ) ) );
 251                                         gitem = rec;
 252                                 }
 253                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsPixmapItem" )
 254                                 {
 255                                         QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 256                                         QImage img( url );
 257                                         ImageItem *rec = new ImageItem(img);
 258                                         scene->addItem( rec );
 259                                         rec->setData( Qt::UserRole, url );
 260                                         gitem = rec;
 261                                 }
 262                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsSvgItem" )
 263                                 {
 264                                         QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 265                                         //QGraphicsSvgItem *rec = new QGraphicsSvgItem(url);
 266                                         //m_scene->addItem(rec);
 267                                         //rec->setData(Qt::UserRole, url);
 268                                         //gitem = rec;
 269                                 }
 270                         }
 271                         //pos and transform
 272                         if ( gitem )
 273                         {
 274                                 QPointF p( items.item( i ).namedItem( "position" ).attributes().namedItem( "x" ).nodeValue().toDouble(),
 275                                            items.item( i ).namedItem( "position" ).attributes().namedItem( "y" ).nodeValue().toDouble() );
 276                                 if ( transform != QTransform() ) p = QPointF(p.x() * transform.m11(), p.y() * transform.m22());
 277                                 gitem->setPos( p );
 278                                 gitem->setTransform( stringToTransform( items.item( i ).namedItem( "position" ).firstChild().firstChild().nodeValue() ) );
 279                                 int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 280                                 gitem->setZValue( zValue );
 281                                 if ( transform != QTransform() ) gitem->setTransform( transform, true );
 282                                 //gitem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 283                         }
 284                         if ( items.item( i ).nodeName() == "background" )
 285                         {
 286                                 QColor color = QColor( stringToColor( items.item( i ).attributes().namedItem( "color" ).nodeValue() ) );
 287                                 //color.setAlpha(items.item(i).attributes().namedItem("alpha").nodeValue().toInt());
 288                                 QList<QGraphicsItem *> items = scene->items();
 289                                 for ( int i = 0; i < items.size(); i++ )
 290                                 {
 291                                         if ( items.at( i )->zValue() == -1100 )
 292                                         {
 293                                                 (( QGraphicsRectItem * )items.at( i ) )->setBrush( QBrush( color ) );
 294                                                 break;
 295                                         }
 296                                 }
 297                         }
 298                         else if ( items.item( i ).nodeName() == "startviewport" )
 299                         {
 300                                 QString rect = items.item( i ).attributes().namedItem( "rect" ).nodeValue();
 301                                 if ( transform != QTransform() ) {
 302                                     rect = rectTransform( rect, transform );
 303                                 }
 304                                 mlt_properties_set( producer_props, "startrect", rect.toUtf8().data() );
 305                         }
 306                         else if ( items.item( i ).nodeName() == "endviewport" )
 307                         {
 308                                 QString rect = items.item( i ).attributes().namedItem( "rect" ).nodeValue();
 309                                 if ( transform != QTransform() ) {
 310                                     rect = rectTransform( rect, transform );
 311                                 }
 312                                 mlt_properties_set( producer_props, "endrect", rect.toUtf8().data() );
 313                         }
 314                 }
 315         }
 316         if ( mlt_properties_get( producer_props, "startrect") == mlt_properties_get( producer_props, "endrect") )
 317                 mlt_properties_set( producer_props, "endrect", "" );
 318         return;
 319 }
 320
 321 QString rectTransform( QString s, QTransform t )
 322 {
 323         QStringList l = s.split( ',' );
 324         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());
 325 }
 326
 327 QString colorToString( const QColor& c )
 328 {
 329         QString ret = "%1,%2,%3,%4";
 330         ret = ret.arg( c.red() ).arg( c.green() ).arg( c.blue() ).arg( c.alpha() );
 331         return ret;
 332 }
 333
 334 QString rectFToString( const QRectF& c )
 335 {
 336         QString ret = "%1,%2,%3,%4";
 337         ret = ret.arg( c.top() ).arg( c.left() ).arg( c.width() ).arg( c.height() );
 338         return ret;
 339 }
 340
 341 QRectF stringToRect( const QString & s )
 342 {
 343
 344         QStringList l = s.split( ',' );
 345         if ( l.size() < 4 )
 346                 return QRectF();
 347         return QRectF( l.at( 0 ).toDouble(), l.at( 1 ).toDouble(), l.at( 2 ).toDouble(), l.at( 3 ).toDouble() ).normalized();
 348 }
 349
 350 QColor stringToColor( const QString & s )
 351 {
 352         QStringList l = s.split( ',' );
 353         if ( l.size() < 4 )
 354                 return QColor();
 355         return QColor( l.at( 0 ).toInt(), l.at( 1 ).toInt(), l.at( 2 ).toInt(), l.at( 3 ).toInt() );
 356         ;
 357 }
 358 QTransform stringToTransform( const QString& s )
 359 {
 360         QStringList l = s.split( ',' );
 361         if ( l.size() < 9 )
 362                 return QTransform();
 363         return QTransform(
 364                    l.at( 0 ).toDouble(), l.at( 1 ).toDouble(), l.at( 2 ).toDouble(),
 365                    l.at( 3 ).toDouble(), l.at( 4 ).toDouble(), l.at( 5 ).toDouble(),
 366                    l.at( 6 ).toDouble(), l.at( 7 ).toDouble(), l.at( 8 ).toDouble()
 367                );
 368 }