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 #include <QtCore/QString>
  34
  35 #include <QtXml/QDomElement>
  36 #include <QtCore/QRectF>
  37 #include <QtGui/QColor>
  38 #include <QtGui/QWidget>
  39
  40 static QMutex g_mutex;
  41 static QApplication *app = NULL;
  42
  43 class ImageItem: public QGraphicsRectItem
  44 {
  45 public:
  46     ImageItem(QImage img)
  47     {
  48         m_img = img;
  49     }
  50     QImage m_img;
  51
  52
  53 protected:
  54 virtual void paint( QPainter *painter,
  55                        const QStyleOptionGraphicsItem * /*option*/,
  56                        QWidget* )
  57 {
  58     painter->setRenderHint(QPainter::SmoothPixmapTransform, true);
  59     painter->drawImage(QPoint(), m_img);
  60 }
  61 };
  62
  63
  64 QString rectTransform( QString s, QTransform t )
  65 {
  66         QStringList l = s.split( ',' );
  67         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());
  68 }
  69
  70 QString colorToString( const QColor& c )
  71 {
  72         QString ret = "%1,%2,%3,%4";
  73         ret = ret.arg( c.red() ).arg( c.green() ).arg( c.blue() ).arg( c.alpha() );
  74         return ret;
  75 }
  76
  77 QString rectFToString( const QRectF& c )
  78 {
  79         QString ret = "%1,%2,%3,%4";
  80         ret = ret.arg( c.top() ).arg( c.left() ).arg( c.width() ).arg( c.height() );
  81         return ret;
  82 }
  83
  84 QRectF stringToRect( const QString & s )
  85 {
  86
  87         QStringList l = s.split( ',' );
  88         if ( l.size() < 4 )
  89                 return QRectF();
  90         return QRectF( l.at( 0 ).toDouble(), l.at( 1 ).toDouble(), l.at( 2 ).toDouble(), l.at( 3 ).toDouble() ).normalized();
  91 }
  92
  93 QColor stringToColor( const QString & s )
  94 {
  95         QStringList l = s.split( ',' );
  96         if ( l.size() < 4 )
  97                 return QColor();
  98         return QColor( l.at( 0 ).toInt(), l.at( 1 ).toInt(), l.at( 2 ).toInt(), l.at( 3 ).toInt() );
  99         ;
 100 }
 101 QTransform stringToTransform( const QString& s )
 102 {
 103         QStringList l = s.split( ',' );
 104         if ( l.size() < 9 )
 105                 return QTransform();
 106         return QTransform(
 107                    l.at( 0 ).toDouble(), l.at( 1 ).toDouble(), l.at( 2 ).toDouble(),
 108                    l.at( 3 ).toDouble(), l.at( 4 ).toDouble(), l.at( 5 ).toDouble(),
 109                    l.at( 6 ).toDouble(), l.at( 7 ).toDouble(), l.at( 8 ).toDouble()
 110                );
 111 }
 112
 113 static void qscene_delete( void *data )
 114 {
 115         QGraphicsScene *scene = ( QGraphicsScene * )data;
 116         delete scene;
 117         scene = NULL;
 118 }
 119
 120
 121 void loadFromXml( mlt_producer producer, QGraphicsScene *scene, const char *templateXml, const char *templateText, int width, int height  )
 122 {
 123         scene->clear();
 124         mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
 125         QDomDocument doc;
 126         QString data = QString::fromUtf8(templateXml);
 127         QString replacementText = QString::fromUtf8(templateText);
 128         doc.setContent(data);
 129         QDomNodeList titles = doc.elementsByTagName( "kdenlivetitle" );
 130         QTransform transform;
 131         if ( doc.documentElement().hasAttribute("width") ) {
 132             int originalWidth = doc.documentElement().attribute("width").toInt();
 133             int originalHeight = doc.documentElement().attribute("height").toInt();
 134             if (originalWidth != width || originalHeight != height) {
 135 #if QT_VERSION < 0x40500
 136                     transform = QTransform().scale(  (double) width / originalWidth, (double) height / originalHeight );
 137 #else
 138                     transform = QTransform::fromScale ( (double) width / originalWidth, (double) height / originalHeight);
 139 #endif
 140             }
 141         }
 142         if ( titles.size() )
 143         {
 144
 145                 QDomNodeList items = titles.item( 0 ).childNodes();
 146                 for ( int i = 0; i < items.count(); i++ )
 147                 {
 148                         QGraphicsItem *gitem = NULL;
 149                         int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 150                         if ( zValue > -1000 )
 151                         {
 152                                 if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsTextItem" )
 153                                 {
 154                                         QDomNamedNodeMap txtProperties = items.item( i ).namedItem( "content" ).attributes();
 155                                         QFont font( txtProperties.namedItem( "font" ).nodeValue() );
 156
 157                                         QDomNode node = txtProperties.namedItem( "font-bold" );
 158                                         if ( !node.isNull() )
 159                                         {
 160                                                 // Old: Bold/Not bold.
 161                                                 font.setBold( node.nodeValue().toInt() );
 162                                         }
 163                                         else
 164                                         {
 165                                                 // New: Font weight (QFont::)
 166                                                 font.setWeight( txtProperties.namedItem( "font-weight" ).nodeValue().toInt() );
 167                                         }
 168
 169                                         //font.setBold(txtProperties.namedItem("font-bold").nodeValue().toInt());
 170                                         font.setItalic( txtProperties.namedItem( "font-italic" ).nodeValue().toInt() );
 171                                         font.setUnderline( txtProperties.namedItem( "font-underline" ).nodeValue().toInt() );
 172                                         // Older Kdenlive version did not store pixel size but point size
 173                                         if ( txtProperties.namedItem( "font-pixel-size" ).isNull() )
 174                                         {
 175                                                 QFont f2;
 176                                                 f2.setPointSize( txtProperties.namedItem( "font-size" ).nodeValue().toInt() );
 177                                                 font.setPixelSize( QFontInfo( f2 ).pixelSize() );
 178                                         }
 179                                         else
 180                                                 font.setPixelSize( txtProperties.namedItem( "font-pixel-size" ).nodeValue().toInt() );
 181                                         QColor col( stringToColor( txtProperties.namedItem( "font-color" ).nodeValue() ) );
 182                                         QString text = items.item( i ).namedItem( "content" ).firstChild().nodeValue();
 183                                         if ( !replacementText.isEmpty() )
 184                                         {
 185                                                 text = text.replace( "%s", replacementText );
 186                                         }
 187                                         QGraphicsTextItem *txt = new QGraphicsTextItem( text );
 188                                         txt->setFont(font);
 189                                         scene->addItem(txt);
 190                                         txt->setDefaultTextColor( col );
 191                                         if ( txtProperties.namedItem( "alignment" ).isNull() == false )
 192                                         {
 193                                                 txt->setTextWidth( txt->boundingRect().width() );
 194                                                 QTextCursor cur = txt->textCursor();
 195                                                 QTextBlockFormat format = cur.blockFormat();
 196                                                 format.setAlignment(( Qt::Alignment ) txtProperties.namedItem( "alignment" ).nodeValue().toInt() );
 197                                                 cur.select( QTextCursor::Document );
 198                                                 cur.setBlockFormat( format );
 199                                                 txt->setTextCursor( cur );
 200                                                 cur.clearSelection();
 201                                                 txt->setTextCursor( cur );
 202                                         }
 203
 204                                         if ( !txtProperties.namedItem( "kdenlive-axis-x-inverted" ).isNull() )
 205                                         {
 206                                                 //txt->setData(OriginXLeft, txtProperties.namedItem("kdenlive-axis-x-inverted").nodeValue().toInt());
 207                                         }
 208                                         if ( !txtProperties.namedItem( "kdenlive-axis-y-inverted" ).isNull() )
 209                                         {
 210                                                 //txt->setData(OriginYTop, txtProperties.namedItem("kdenlive-axis-y-inverted").nodeValue().toInt());
 211                                         }
 212
 213                                         gitem = txt;
 214                                 }
 215                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsRectItem" )
 216                                 {
 217                                         QString rect = items.item( i ).namedItem( "content" ).attributes().namedItem( "rect" ).nodeValue();
 218                                         QString br_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "brushcolor" ).nodeValue();
 219                                         QString pen_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "pencolor" ).nodeValue();
 220                                         double penwidth = items.item( i ).namedItem( "content" ).attributes().namedItem( "penwidth" ).nodeValue().toDouble();
 221                                         QGraphicsRectItem *rec = scene->addRect( stringToRect( rect ), QPen( QBrush( stringToColor( pen_str ) ), penwidth ), QBrush( stringToColor( br_str ) ) );
 222                                         gitem = rec;
 223                                 }
 224                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsPixmapItem" )
 225                                 {
 226                                         QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 227                                         QImage img( url );
 228                                         ImageItem *rec = new ImageItem(img);
 229                                         scene->addItem( rec );
 230                                         rec->setData( Qt::UserRole, url );
 231                                         gitem = rec;
 232                                 }
 233                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsSvgItem" )
 234                                 {
 235                                         QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 236                                         //QGraphicsSvgItem *rec = new QGraphicsSvgItem(url);
 237                                         //m_scene->addItem(rec);
 238                                         //rec->setData(Qt::UserRole, url);
 239                                         //gitem = rec;
 240                                 }
 241                         }
 242                         //pos and transform
 243                         if ( gitem )
 244                         {
 245                                 QPointF p( items.item( i ).namedItem( "position" ).attributes().namedItem( "x" ).nodeValue().toDouble(),
 246                                            items.item( i ).namedItem( "position" ).attributes().namedItem( "y" ).nodeValue().toDouble() );
 247                                 if ( transform != QTransform() ) p = QPointF(p.x() * transform.m11(), p.y() * transform.m22());
 248                                 gitem->setPos( p );
 249                                 gitem->setTransform( stringToTransform( items.item( i ).namedItem( "position" ).firstChild().firstChild().nodeValue() ) );
 250                                 int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 251                                 gitem->setZValue( zValue );
 252                                 if ( transform != QTransform() ) gitem->setTransform( transform, true );
 253                                 //gitem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 254                         }
 255                         if ( items.item( i ).nodeName() == "background" )
 256                         {
 257                                 QColor color = QColor( stringToColor( items.item( i ).attributes().namedItem( "color" ).nodeValue() ) );
 258                                 //color.setAlpha(items.item(i).attributes().namedItem("alpha").nodeValue().toInt());
 259                                 QList<QGraphicsItem *> items = scene->items();
 260                                 for ( int i = 0; i < items.size(); i++ )
 261                                 {
 262                                         if ( items.at( i )->zValue() == -1100 )
 263                                         {
 264                                                 (( QGraphicsRectItem * )items.at( i ) )->setBrush( QBrush( color ) );
 265                                                 break;
 266                                         }
 267                                 }
 268                         }
 269                         else if ( items.item( i ).nodeName() == "startviewport" )
 270                         {
 271                                 QString rect = items.item( i ).attributes().namedItem( "rect" ).nodeValue();
 272                                 if ( transform != QTransform() ) {
 273                                     rect = rectTransform( rect, transform );
 274                                 }
 275                                 mlt_properties_set( producer_props, "_startrect", rect.toUtf8().data() );
 276                         }
 277                         else if ( items.item( i ).nodeName() == "endviewport" )
 278                         {
 279                                 QString rect = items.item( i ).attributes().namedItem( "rect" ).nodeValue();
 280                                 if ( transform != QTransform() ) {
 281                                     rect = rectTransform( rect, transform );
 282                                 }
 283                                 mlt_properties_set( producer_props, "_endrect", rect.toUtf8().data() );
 284                         }
 285                 }
 286         }
 287         if ( !strcmp( mlt_properties_get( producer_props, "_startrect" ), mlt_properties_get( producer_props, "_endrect" ) ) )
 288                 mlt_properties_set( producer_props, "_endrect", "" );
 289         return;
 290 }
 291
 292
 293 void drawKdenliveTitle( producer_ktitle self, uint8_t * buffer, int width, int height, double position, int force_refresh )
 294 {
 295
 296         // Obtain the producer
 297         mlt_producer producer = &self->parent;
 298
 299         // restore cached image if any
 300         mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
 301
 302         /*if ( force_refresh == 0 )
 303         {
 304                 uint8_t * cache = ( uint8_t * )mlt_properties_get_data( producer_props, "image", NULL );
 305                 if (cache) {
 306                     buffer = cache;
 307                     return;
 308                 }
 309         }*/
 310
 311         // restore QGraphicsScene
 312         QGraphicsScene *scene = static_cast<QGraphicsScene *> (mlt_properties_get_data( producer_props, "qscene", NULL ));
 313
 314         if ( force_refresh == 1 && scene )
 315         {
 316                 scene = NULL;
 317                 mlt_properties_set_data( producer_props, "qscene", NULL, 0, NULL, NULL );
 318         }
 319
 320         if ( scene == NULL )
 321         {
 322                 int argc = 1;
 323                 char* argv[1];
 324                 argv[0] = "xxx";
 325                 if (qApp) {
 326                     app = qApp;
 327                 }
 328                 else {
 329                     app=new QApplication( argc,argv ); //, QApplication::Tty );
 330                 }
 331                 scene = new QGraphicsScene( 0, 0, width, height, app );
 332                 loadFromXml( producer, scene, mlt_properties_get( producer_props, "xmldata" ), mlt_properties_get( producer_props, "templatetext" ), width, height );
 333                 mlt_properties_set_data( producer_props, "qscene", scene, 0, ( mlt_destructor )qscene_delete, NULL );
 334         }
 335
 336
 337         //must be extracted from kdenlive title
 338         QImage img( width, height, QImage::Format_ARGB32 );
 339         img.fill( 0 );
 340         QPainter p1;
 341         p1.begin( &img );
 342         p1.setRenderHints( QPainter::Antialiasing | QPainter::TextAntialiasing | QPainter::HighQualityAntialiasing );
 343         //| QPainter::SmoothPixmapTransform );
 344
 345         const QRectF start = stringToRect( QString( mlt_properties_get( producer_props, "_startrect" ) ) );
 346         const QRectF end = stringToRect( QString( mlt_properties_get( producer_props, "_endrect" ) ) );
 347         const QRectF source( 0, 0, width, height );
 348
 349         if (end.isNull()) {
 350                 if (start.isNull())
 351                         scene->render( &p1, source, source );
 352                 else
 353                         scene->render( &p1, start, source );
 354         }
 355         else {
 356             QPointF topleft = start.topLeft() + ( end.topLeft() - start.topLeft() ) * position;
 357             QPointF bottomRight = start.bottomRight() + ( end.bottomRight() - start.bottomRight() ) * position;
 358             const QRectF r1( topleft, bottomRight );
 359             scene->render( &p1, r1, source );
 360         }
 361         p1.end();
 362         g_mutex.lock();
 363         uint8_t *pointer=img.bits();
 364         QRgb* src = ( QRgb* ) pointer;
 365         int size = width * height * 4;
 366         for ( int i = 0; i < width * height * 4; i += 4 )
 367         {
 368                 *buffer++=qRed( *src );
 369                 *buffer++=qGreen( *src );
 370                 *buffer++=qBlue( *src );
 371                 *buffer++=qAlpha( *src );
 372                 src++;
 373         }
 374
 375         if ( end.isNull() )
 376         {
 377             // No animation, cache image for further requests
 378             self->current_image = (uint8_t *)mlt_pool_alloc( size );
 379             self->current_image = buffer;
 380             mlt_properties_set_data( producer_props, "image", self->current_image, width * height * 4, NULL, NULL );
 381
 382             // Clear scene, we don't need it anymore
 383             mlt_properties_set_data( producer_props, "qscene", NULL, 0, NULL, NULL );
 384         }
 385         g_mutex.unlock();
 386 }
 387
 388
 389
 390