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         QDomElement title = doc.documentElement();
 130
 131         // Check for invalid title
 132         if ( title.isNull() || title.tagName() != "kdenlivetitle" ) return;
 133
 134         QTransform transform;
 135         if ( title.hasAttribute("width") ) {
 136             int originalWidth = title.attribute("width").toInt();
 137             mlt_properties_set_int( producer_props, "_original_width", originalWidth );
 138             int originalHeight = title.attribute("height").toInt();
 139             mlt_properties_set_int( producer_props, "_original_height", originalHeight );
 140             scene->setSceneRect(0, 0, originalWidth, originalHeight);
 141         }
 142
 143         QDomNodeList items = title.elementsByTagName("item");
 144         for ( int i = 0; i < items.count(); i++ )
 145         {
 146                 QGraphicsItem *gitem = NULL;
 147                 int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 148                 if ( zValue > -1000 )
 149                 {
 150                         if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsTextItem" )
 151                         {
 152                                 QDomNamedNodeMap txtProperties = items.item( i ).namedItem( "content" ).attributes();
 153                                 QFont font( txtProperties.namedItem( "font" ).nodeValue() );
 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                                         font.setItalic( txtProperties.namedItem( "font-italic" ).nodeValue().toInt() );
 166                                 font.setUnderline( txtProperties.namedItem( "font-underline" ).nodeValue().toInt() );
 167                                 // Older Kdenlive version did not store pixel size but point size
 168                                 if ( txtProperties.namedItem( "font-pixel-size" ).isNull() )
 169                                 {
 170                                         QFont f2;
 171                                         f2.setPointSize( txtProperties.namedItem( "font-size" ).nodeValue().toInt() );
 172                                         font.setPixelSize( QFontInfo( f2 ).pixelSize() );
 173                                 }
 174                                 else
 175                                         font.setPixelSize( txtProperties.namedItem( "font-pixel-size" ).nodeValue().toInt() );
 176                                 QColor col( stringToColor( txtProperties.namedItem( "font-color" ).nodeValue() ) );
 177                                 QString text = items.item( i ).namedItem( "content" ).firstChild().nodeValue();
 178                                 if ( !replacementText.isEmpty() )
 179                                 {
 180                                         text = text.replace( "%s", replacementText );
 181                                 }
 182                                 QGraphicsTextItem *txt = scene->addText(text, font);
 183                                 txt->setDefaultTextColor( col );
 184                                 if ( txtProperties.namedItem( "alignment" ).isNull() == false )
 185                                 {
 186                                         txt->setTextWidth( txt->boundingRect().width() );
 187                                         QTextCursor cur = txt->textCursor();
 188                                         QTextBlockFormat format = cur.blockFormat();
 189                                         format.setAlignment(( Qt::Alignment ) txtProperties.namedItem( "alignment" ).nodeValue().toInt() );
 190                                         cur.select( QTextCursor::Document );
 191                                         cur.setBlockFormat( format );
 192                                         txt->setTextCursor( cur );
 193                                         cur.clearSelection();
 194                                         txt->setTextCursor( cur );
 195                                 }
 196                                         if ( !txtProperties.namedItem( "kdenlive-axis-x-inverted" ).isNull() )
 197                                 {
 198                                         //txt->setData(OriginXLeft, txtProperties.namedItem("kdenlive-axis-x-inverted").nodeValue().toInt());
 199                                 }
 200                                 if ( !txtProperties.namedItem( "kdenlive-axis-y-inverted" ).isNull() )
 201                                 {
 202                                         //txt->setData(OriginYTop, txtProperties.namedItem("kdenlive-axis-y-inverted").nodeValue().toInt());
 203                                 }
 204                                         gitem = txt;
 205                         }
 206                         else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsRectItem" )
 207                         {
 208                                 QString rect = items.item( i ).namedItem( "content" ).attributes().namedItem( "rect" ).nodeValue();
 209                                 QString br_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "brushcolor" ).nodeValue();
 210                                 QString pen_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "pencolor" ).nodeValue();
 211                                 double penwidth = items.item( i ).namedItem( "content" ).attributes().namedItem( "penwidth") .nodeValue().toDouble();
 212                                 QGraphicsRectItem *rec = scene->addRect( stringToRect( rect ), QPen( QBrush( stringToColor( pen_str ) ), penwidth ), QBrush( stringToColor( br_str ) ) );
 213                                 gitem = rec;
 214                         }
 215                         else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsPixmapItem" )
 216                         {
 217                                 const QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 218                                 QImage img( url );
 219                                 ImageItem *rec = new ImageItem(img);
 220                                 scene->addItem( rec );
 221                                 gitem = rec;
 222                         }
 223                         else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsSvgItem" )
 224                         {
 225                                 const QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 226                                 QGraphicsSvgItem *rec = new QGraphicsSvgItem(url);
 227                                 scene->addItem(rec);
 228                                 gitem = rec;
 229                         }
 230                 }
 231                 //pos and transform
 232                 if ( gitem )
 233                 {
 234                         QPointF p( items.item( i ).namedItem( "position" ).attributes().namedItem( "x" ).nodeValue().toDouble(),
 235                                    items.item( i ).namedItem( "position" ).attributes().namedItem( "y" ).nodeValue().toDouble() );
 236                         gitem->setPos( p );
 237                         gitem->setTransform( stringToTransform( items.item( i ).namedItem( "position" ).firstChild().firstChild().nodeValue() ) );
 238                         int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 239                         gitem->setZValue( zValue );
 240                 }
 241         }
 242
 243         QDomNode n = doc.documentElement().firstChildElement("background");
 244         if (!n.isNull()) {
 245                 QColor color = QColor( stringToColor( n.attributes().namedItem( "color" ).nodeValue() ) );
 246                 if (color.alpha() > 0) {
 247                         QGraphicsRectItem *rec = scene->addRect(0, 0, scene->width(), scene->height() , QPen( Qt::NoPen ), QBrush( color ) );
 248                         rec->setZValue(-1100);
 249                 }
 250
 251         }
 252
 253         QString startRect;
 254         n = doc.documentElement().firstChildElement( "startviewport" );
 255         if (!n.isNull())
 256         {
 257                 startRect = n.attributes().namedItem( "rect" ).nodeValue();
 258         }
 259         n = doc.documentElement().firstChildElement( "endviewport" );
 260         if (!n.isNull())
 261         {
 262                 QString rect = n.attributes().namedItem( "rect" ).nodeValue();
 263                 if (startRect != rect)
 264                         mlt_properties_set( producer_props, "_endrect", rect.toUtf8().data() );
 265         }
 266         if (!startRect.isEmpty()) {
 267                 mlt_properties_set( producer_props, "_startrect", startRect.toUtf8().data() );
 268         }
 269         return;
 270 }
 271
 272
 273 void drawKdenliveTitle( producer_ktitle self, mlt_frame frame, int width, int height, double position, int force_refresh )
 274 {
 275         // Obtain the producer
 276         mlt_producer producer = &self->parent;
 277         mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
 278
 279         // Obtain properties of frame
 280         mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
 281
 282         pthread_mutex_lock( &self->mutex );
 283
 284         // Check if user wants us to reload the image
 285         if ( force_refresh == 1 || width != self->current_width || height != self->current_height || mlt_properties_get( producer_props, "_endrect" ) != NULL )
 286         {
 287                 //mlt_cache_item_close( self->image_cache );
 288                 self->current_image = NULL;
 289                 mlt_properties_set_data( producer_props, "cached_image", NULL, 0, NULL, NULL );
 290                 mlt_properties_set_int( producer_props, "force_reload", 0 );
 291         }
 292
 293         if (self->current_image == NULL) {
 294                 // restore QGraphicsScene
 295                 QGraphicsScene *scene = static_cast<QGraphicsScene *> (mlt_properties_get_data( producer_props, "qscene", NULL ));
 296
 297                 if ( force_refresh == 1 && scene )
 298                 {
 299                         scene = NULL;
 300                         mlt_properties_set_data( producer_props, "qscene", NULL, 0, NULL, NULL );
 301                 }
 302
 303                 if ( scene == NULL )
 304                 {
 305                         int argc = 1;
 306                         char* argv[1];
 307                         argv[0] = (char*) "xxx";
 308                         if (qApp) {
 309                                 app = qApp;
 310                         }
 311                         else {
 312                                 app=new QApplication( argc,argv ); //, QApplication::Tty );
 313                         }
 314                         scene = new QGraphicsScene();
 315                         loadFromXml( producer, scene, mlt_properties_get( producer_props, "xmldata" ), mlt_properties_get( producer_props, "templatetext" ) );
 316                         mlt_properties_set_data( producer_props, "qscene", scene, 0, ( mlt_destructor )qscene_delete, NULL );
 317                 }
 318
 319                 QRectF start = stringToRect( QString( mlt_properties_get( producer_props, "_startrect" ) ) );
 320                 QRectF end = stringToRect( QString( mlt_properties_get( producer_props, "_endrect" ) ) );
 321
 322                 int originalWidth = mlt_properties_get_int( producer_props, "_original_width" );
 323                 int originalHeight= mlt_properties_get_int( producer_props, "_original_height" );
 324                 const QRectF source( 0, 0, width, height );
 325                 if (start.isNull()) {
 326                     start = QRectF( 0, 0, originalWidth, originalHeight );
 327                 }
 328
 329                 //must be extracted from kdenlive title
 330                 QImage img( width, height, QImage::Format_ARGB32 );
 331                 img.fill( 0 );
 332                 QPainter p1;
 333                 p1.begin( &img );
 334                 p1.setRenderHints( QPainter::Antialiasing | QPainter::TextAntialiasing | QPainter::HighQualityAntialiasing );
 335                 //| QPainter::SmoothPixmapTransform );
 336                 if (end.isNull())
 337                 {
 338                         scene->render( &p1, source, start, Qt::IgnoreAspectRatio );
 339                 }
 340                 else
 341                 {
 342                         QPointF topleft = start.topLeft() + ( end.topLeft() - start.topLeft() ) * position;
 343                         QPointF bottomRight = start.bottomRight() + ( end.bottomRight() - start.bottomRight() ) * position;
 344                         const QRectF r1( topleft, bottomRight );
 345                         scene->render( &p1, source, r1, Qt::IgnoreAspectRatio );
 346                 }
 347                 p1.end();
 348
 349                 int size = width * height * 4;
 350                 uint8_t *pointer=img.bits();
 351                 QRgb* src = ( QRgb* ) pointer;
 352                 self->current_image = ( uint8_t * )mlt_pool_alloc( size );
 353                 uint8_t *dst = self->current_image;
 354
 355                 for ( int i = 0; i < width * height * 4; i += 4 )
 356                 {
 357                         *dst++=qRed( *src );
 358                         *dst++=qGreen( *src );
 359                         *dst++=qBlue( *src );
 360                         *dst++=qAlpha( *src );
 361                         src++;
 362                 }
 363
 364                 mlt_properties_set_data( producer_props, "cached_image", self->current_image, size, mlt_pool_release, NULL );
 365                 self->current_width = width;
 366                 self->current_height = height;
 367         }
 368
 369         pthread_mutex_unlock( &self->mutex );
 370         mlt_properties_set_int( properties, "width", self->current_width );
 371         mlt_properties_set_int( properties, "height", self->current_height );
 372 }
 373
 374