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 <QtSvg/QGraphicsSvgItem>
  31 #include <QtGui/QTextCursor>
  32 #include <QtGui/QStyleOptionGraphicsItem>
  33
  34 #include <QtCore/QString>
  35
  36 #include <QtXml/QDomElement>
  37 #include <QtCore/QRectF>
  38 #include <QtGui/QColor>
  39 #include <QtGui/QWidget>
  40
  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 )
 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             mlt_properties_set_int( producer_props, "_original_width", originalWidth );
 134             int originalHeight = doc.documentElement().attribute("height").toInt();
 135             mlt_properties_set_int( producer_props, "_original_height", originalHeight );
 136             scene->setSceneRect(0, 0, originalWidth, originalHeight);
 137         }
 138
 139         if ( titles.size() )
 140         {
 141
 142                 QDomNodeList items = titles.item( 0 ).childNodes();
 143                 for ( int i = 0; i < items.count(); i++ )
 144                 {
 145                         QGraphicsItem *gitem = NULL;
 146                         int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 147                         if ( zValue > -1000 )
 148                         {
 149                                 if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsTextItem" )
 150                                 {
 151                                         QDomNamedNodeMap txtProperties = items.item( i ).namedItem( "content" ).attributes();
 152                                         QFont font( txtProperties.namedItem( "font" ).nodeValue() );
 153
 154                                         QDomNode node = txtProperties.namedItem( "font-bold" );
 155                                         if ( !node.isNull() )
 156                                         {
 157                                                 // Old: Bold/Not bold.
 158                                                 font.setBold( node.nodeValue().toInt() );
 159                                         }
 160                                         else
 161                                         {
 162                                                 // New: Font weight (QFont::)
 163                                                 font.setWeight( txtProperties.namedItem( "font-weight" ).nodeValue().toInt() );
 164                                         }
 165
 166                                         font.setItalic( txtProperties.namedItem( "font-italic" ).nodeValue().toInt() );
 167                                         font.setUnderline( txtProperties.namedItem( "font-underline" ).nodeValue().toInt() );
 168                                         // Older Kdenlive version did not store pixel size but point size
 169                                         if ( txtProperties.namedItem( "font-pixel-size" ).isNull() )
 170                                         {
 171                                                 QFont f2;
 172                                                 f2.setPointSize( txtProperties.namedItem( "font-size" ).nodeValue().toInt() );
 173                                                 font.setPixelSize( QFontInfo( f2 ).pixelSize() );
 174                                         }
 175                                         else
 176                                                 font.setPixelSize( txtProperties.namedItem( "font-pixel-size" ).nodeValue().toInt() );
 177                                         QColor col( stringToColor( txtProperties.namedItem( "font-color" ).nodeValue() ) );
 178                                         QString text = items.item( i ).namedItem( "content" ).firstChild().nodeValue();
 179                                         if ( !replacementText.isEmpty() )
 180                                         {
 181                                                 text = text.replace( "%s", replacementText );
 182                                         }
 183                                         QGraphicsTextItem *txt = scene->addText(text, font);
 184                                         txt->setDefaultTextColor( col );
 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                                         const QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 221                                         QImage img( url );
 222                                         ImageItem *rec = new ImageItem(img);
 223                                         scene->addItem( rec );
 224                                         gitem = rec;
 225                                 }
 226                                 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsSvgItem" )
 227                                 {
 228                                         const QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 229                                         QGraphicsSvgItem *rec = new QGraphicsSvgItem(url);
 230                                         scene->addItem(rec);
 231                                         gitem = rec;
 232                                 }
 233                         }
 234                         //pos and transform
 235                         if ( gitem )
 236                         {
 237                                 QPointF p( items.item( i ).namedItem( "position" ).attributes().namedItem( "x" ).nodeValue().toDouble(),
 238                                            items.item( i ).namedItem( "position" ).attributes().namedItem( "y" ).nodeValue().toDouble() );
 239                                 gitem->setPos( p );
 240                                 gitem->setTransform( stringToTransform( items.item( i ).namedItem( "position" ).firstChild().firstChild().nodeValue() ) );
 241                                 int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 242                                 gitem->setZValue( zValue );
 243                         }
 244                 }
 245         }
 246         QDomNode n = doc.documentElement().firstChildElement("background");
 247         if (!n.isNull()) {
 248           QColor color = QColor( stringToColor( n.attributes().namedItem( "color" ).nodeValue() ) );
 249                                 //color.setAlpha(items.item(i).attributes().namedItem("alpha").nodeValue().toInt());
 250                                 QList<QGraphicsItem *> items = scene->items();
 251                                 for ( int i = 0; i < items.size(); i++ )
 252                                 {
 253                                         if ( items.at( i )->zValue() == -1100 )
 254                                         {
 255                                                 (( QGraphicsRectItem * )items.at( i ) )->setBrush( QBrush( color ) );
 256                                                 break;
 257                                         }
 258                                 }
 259
 260         }
 261
 262         QString startRect;
 263         n = doc.documentElement().firstChildElement( "startviewport" );
 264         if (!n.isNull())
 265         {
 266                 startRect = n.attributes().namedItem( "rect" ).nodeValue();
 267         }
 268         n = doc.documentElement().firstChildElement( "endviewport" );
 269         if (!n.isNull())
 270         {
 271                 QString rect = n.attributes().namedItem( "rect" ).nodeValue();
 272                 if (startRect != rect)
 273                         mlt_properties_set( producer_props, "_endrect", rect.toUtf8().data() );
 274         }
 275         if (!startRect.isEmpty()) {
 276                 mlt_properties_set( producer_props, "_startrect", startRect.toUtf8().data() );
 277         }
 278
 279         return;
 280 }
 281
 282
 283 void drawKdenliveTitle( producer_ktitle self, mlt_frame frame, int width, int height, double position, int force_refresh )
 284 {
 285         // Obtain the producer
 286         mlt_producer producer = &self->parent;
 287         mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
 288
 289         // Obtain properties of frame
 290         mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
 291
 292         pthread_mutex_lock( &self->mutex );
 293
 294         QRectF start = stringToRect( QString( mlt_properties_get( producer_props, "_startrect" ) ) );
 295         QRectF end = stringToRect( QString( mlt_properties_get( producer_props, "_endrect" ) ) );
 296
 297         // Check if user wants us to reload the image
 298         if ( force_refresh == 1 || width != self->current_width || height != self->current_height || !end.isNull())
 299         {
 300                 //mlt_cache_item_close( self->image_cache );
 301
 302                 self->current_image = NULL;
 303                 mlt_properties_set_data( producer_props, "cached_image", NULL, 0, NULL, NULL );
 304                 mlt_properties_set_int( producer_props, "force_reload", 0 );
 305         }
 306
 307         if (self->current_image == NULL) {
 308                 // restore QGraphicsScene
 309                 QGraphicsScene *scene = static_cast<QGraphicsScene *> (mlt_properties_get_data( producer_props, "qscene", NULL ));
 310
 311                 if ( force_refresh == 1 && scene )
 312                 {
 313                         scene = NULL;
 314                         mlt_properties_set_data( producer_props, "qscene", NULL, 0, NULL, NULL );
 315                 }
 316
 317                 if ( scene == NULL )
 318                 {
 319                         int argc = 1;
 320                         char* argv[1];
 321                         argv[0] = "xxx";
 322                         if (qApp) {
 323                                 app = qApp;
 324                         }
 325                         else {
 326                                 app=new QApplication( argc,argv ); //, QApplication::Tty );
 327                         }
 328                         scene = new QGraphicsScene();
 329                         loadFromXml( producer, scene, mlt_properties_get( producer_props, "xmldata" ), mlt_properties_get( producer_props, "templatetext" ) );
 330                         mlt_properties_set_data( producer_props, "qscene", scene, 0, ( mlt_destructor )qscene_delete, NULL );
 331                 }
 332
 333                 int originalWidth = mlt_properties_get_int( producer_props, "_original_width" );
 334                 int originalHeight= mlt_properties_get_int( producer_props, "_original_height" );
 335                 const QRectF source( 0, 0, width, height );
 336                 if (start.isNull()) {
 337                     start = QRectF( 0, 0, originalWidth, originalHeight );
 338                 }
 339
 340                 //must be extracted from kdenlive title
 341                 QImage img( width, height, QImage::Format_ARGB32 );
 342                 img.fill( 0 );
 343                 QPainter p1;
 344                 p1.begin( &img );
 345                 p1.setRenderHints( QPainter::Antialiasing | QPainter::TextAntialiasing | QPainter::HighQualityAntialiasing );
 346                 //| QPainter::SmoothPixmapTransform );
 347                 if (end.isNull())
 348                 {
 349                         scene->render( &p1, source, start, Qt::IgnoreAspectRatio );
 350                 }
 351                 else
 352                 {
 353                         QPointF topleft = start.topLeft() + ( end.topLeft() - start.topLeft() ) * position;
 354                         QPointF bottomRight = start.bottomRight() + ( end.bottomRight() - start.bottomRight() ) * position;
 355                         const QRectF r1( topleft, bottomRight );
 356                         scene->render( &p1, source, r1, Qt::IgnoreAspectRatio );
 357                 }
 358                 p1.end();
 359
 360                 int size = width * height * 4;
 361                 uint8_t *pointer=img.bits();
 362                 QRgb* src = ( QRgb* ) pointer;
 363                 self->current_image = ( uint8_t * )mlt_pool_alloc( size );
 364                 uint8_t *dst = self->current_image;
 365
 366                 for ( int i = 0; i < width * height * 4; i += 4 )
 367                 {
 368                         *dst++=qRed( *src );
 369                         *dst++=qGreen( *src );
 370                         *dst++=qBlue( *src );
 371                         *dst++=qAlpha( *src );
 372                         src++;
 373                 }
 374
 375                 mlt_properties_set_data( producer_props, "cached_image", self->current_image, size, mlt_pool_release, NULL );
 376                 self->current_width = width;
 377                 self->current_height = height;
 378         }
 379
 380         pthread_mutex_unlock( &self->mutex );
 381         mlt_properties_set_int( properties, "width", self->current_width );
 382         mlt_properties_set_int( properties, "height", self->current_height );
 383 }
 384
 385