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 #include <framework/mlt_log.h>
  41
  42 #if QT_VERSION >= 0x040600
  43 #include <QtGui/QGraphicsEffect>
  44 #include <QtGui/QGraphicsBlurEffect>
  45 #include <QtGui/QGraphicsDropShadowEffect>
  46 #endif
  47
  48 static QApplication *app = NULL;
  49
  50 class ImageItem: public QGraphicsItem
  51 {
  52 public:
  53     ImageItem(QImage img)
  54     {
  55         m_img = img;
  56     }
  57     QImage m_img;
  58
  59
  60 protected:
  61
  62 virtual QRectF boundingRect() const
  63 {
  64     return QRectF(0, 0, m_img.width(), m_img.height());
  65 }
  66
  67 virtual void paint( QPainter *painter,
  68                        const QStyleOptionGraphicsItem * /*option*/,
  69                        QWidget* )
  70 {
  71     painter->setRenderHint(QPainter::SmoothPixmapTransform, true);
  72     painter->drawImage(QPoint(), m_img);
  73 }
  74 };
  75
  76
  77 QString rectTransform( QString s, QTransform t )
  78 {
  79         QStringList l = s.split( ',' );
  80         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());
  81 }
  82
  83 QString colorToString( const QColor& c )
  84 {
  85         QString ret = "%1,%2,%3,%4";
  86         ret = ret.arg( c.red() ).arg( c.green() ).arg( c.blue() ).arg( c.alpha() );
  87         return ret;
  88 }
  89
  90 QString rectFToString( const QRectF& c )
  91 {
  92         QString ret = "%1,%2,%3,%4";
  93         ret = ret.arg( c.top() ).arg( c.left() ).arg( c.width() ).arg( c.height() );
  94         return ret;
  95 }
  96
  97 QRectF stringToRect( const QString & s )
  98 {
  99
 100         QStringList l = s.split( ',' );
 101         if ( l.size() < 4 )
 102                 return QRectF();
 103         return QRectF( l.at( 0 ).toDouble(), l.at( 1 ).toDouble(), l.at( 2 ).toDouble(), l.at( 3 ).toDouble() ).normalized();
 104 }
 105
 106 QColor stringToColor( const QString & s )
 107 {
 108         QStringList l = s.split( ',' );
 109         if ( l.size() < 4 )
 110                 return QColor();
 111         return QColor( l.at( 0 ).toInt(), l.at( 1 ).toInt(), l.at( 2 ).toInt(), l.at( 3 ).toInt() );
 112         ;
 113 }
 114 QTransform stringToTransform( const QString& s )
 115 {
 116         QStringList l = s.split( ',' );
 117         if ( l.size() < 9 )
 118                 return QTransform();
 119         return QTransform(
 120                    l.at( 0 ).toDouble(), l.at( 1 ).toDouble(), l.at( 2 ).toDouble(),
 121                    l.at( 3 ).toDouble(), l.at( 4 ).toDouble(), l.at( 5 ).toDouble(),
 122                    l.at( 6 ).toDouble(), l.at( 7 ).toDouble(), l.at( 8 ).toDouble()
 123                );
 124 }
 125
 126 static void qscene_delete( void *data )
 127 {
 128         QGraphicsScene *scene = ( QGraphicsScene * )data;
 129         if (scene) delete scene;
 130         scene = NULL;
 131 }
 132
 133
 134 void loadFromXml( mlt_producer producer, QGraphicsScene *scene, const char *templateXml, const char *templateText )
 135 {
 136         scene->clear();
 137         mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
 138         QDomDocument doc;
 139         QString data = QString::fromUtf8(templateXml);
 140         QString replacementText = QString::fromUtf8(templateText);
 141         doc.setContent(data);
 142         QDomElement title = doc.documentElement();
 143
 144         // Check for invalid title
 145         if ( title.isNull() || title.tagName() != "kdenlivetitle" ) return;
 146
 147         int originalWidth;
 148         int originalHeight;
 149         if ( title.hasAttribute("width") ) {
 150             originalWidth = title.attribute("width").toInt();
 151             originalHeight = title.attribute("height").toInt();
 152             scene->setSceneRect(0, 0, originalWidth, originalHeight);
 153         }
 154         else {
 155             originalWidth = scene->sceneRect().width();
 156             originalHeight = scene->sceneRect().height();
 157         }
 158         if ( title.hasAttribute( "out" ) ) {
 159             mlt_properties_set_position( producer_props, "_animation_out", title.attribute( "out" ).toDouble() );
 160         }
 161         else {
 162             mlt_properties_set_position( producer_props, "_animation_out", mlt_producer_get_out( producer ) );
 163         }
 164
 165         mlt_properties_set_int( producer_props, "_original_width", originalWidth );
 166         mlt_properties_set_int( producer_props, "_original_height", originalHeight );
 167
 168         QDomNodeList items = title.elementsByTagName("item");
 169         for ( int i = 0; i < items.count(); i++ )
 170         {
 171                 QGraphicsItem *gitem = NULL;
 172                 int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 173                 if ( zValue > -1000 )
 174                 {
 175                         if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsTextItem" )
 176                         {
 177                                 QDomNamedNodeMap txtProperties = items.item( i ).namedItem( "content" ).attributes();
 178                                 QFont font( txtProperties.namedItem( "font" ).nodeValue() );
 179                                         QDomNode node = txtProperties.namedItem( "font-bold" );
 180                                 if ( !node.isNull() )
 181                                 {
 182                                 // Old: Bold/Not bold.
 183                                         font.setBold( node.nodeValue().toInt() );
 184                                 }
 185                                 else
 186                                 {
 187                                         // New: Font weight (QFont::)
 188                                         font.setWeight( txtProperties.namedItem( "font-weight" ).nodeValue().toInt() );
 189                                 }
 190                                         font.setItalic( txtProperties.namedItem( "font-italic" ).nodeValue().toInt() );
 191                                 font.setUnderline( txtProperties.namedItem( "font-underline" ).nodeValue().toInt() );
 192                                 // Older Kdenlive version did not store pixel size but point size
 193                                 if ( txtProperties.namedItem( "font-pixel-size" ).isNull() )
 194                                 {
 195                                         QFont f2;
 196                                         f2.setPointSize( txtProperties.namedItem( "font-size" ).nodeValue().toInt() );
 197                                         font.setPixelSize( QFontInfo( f2 ).pixelSize() );
 198                                 }
 199                                 else
 200                                         font.setPixelSize( txtProperties.namedItem( "font-pixel-size" ).nodeValue().toInt() );
 201                                 QColor col( stringToColor( txtProperties.namedItem( "font-color" ).nodeValue() ) );
 202                                 QString text = items.item( i ).namedItem( "content" ).firstChild().nodeValue();
 203                                 if ( !replacementText.isEmpty() )
 204                                 {
 205                                         text = text.replace( "%s", replacementText );
 206                                 }
 207                                 QGraphicsTextItem *txt = scene->addText(text, font);
 208                                 txt->setDefaultTextColor( col );
 209                                 if ( txtProperties.namedItem( "alignment" ).isNull() == false )
 210                                 {
 211                                         txt->setTextWidth( txt->boundingRect().width() );
 212                                         QTextCursor cur = txt->textCursor();
 213                                         QTextBlockFormat format = cur.blockFormat();
 214                                         format.setAlignment(( Qt::Alignment ) txtProperties.namedItem( "alignment" ).nodeValue().toInt() );
 215                                         cur.select( QTextCursor::Document );
 216                                         cur.setBlockFormat( format );
 217                                         txt->setTextCursor( cur );
 218                                         cur.clearSelection();
 219                                         txt->setTextCursor( cur );
 220                                 }
 221                                         if ( !txtProperties.namedItem( "kdenlive-axis-x-inverted" ).isNull() )
 222                                 {
 223                                         //txt->setData(OriginXLeft, txtProperties.namedItem("kdenlive-axis-x-inverted").nodeValue().toInt());
 224                                 }
 225                                 if ( !txtProperties.namedItem( "kdenlive-axis-y-inverted" ).isNull() )
 226                                 {
 227                                         //txt->setData(OriginYTop, txtProperties.namedItem("kdenlive-axis-y-inverted").nodeValue().toInt());
 228                                 }
 229                                         gitem = txt;
 230                         }
 231                         else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsRectItem" )
 232                         {
 233                                 QString rect = items.item( i ).namedItem( "content" ).attributes().namedItem( "rect" ).nodeValue();
 234                                 QString br_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "brushcolor" ).nodeValue();
 235                                 QString pen_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "pencolor" ).nodeValue();
 236                                 double penwidth = items.item( i ).namedItem( "content" ).attributes().namedItem( "penwidth") .nodeValue().toDouble();
 237                                 QGraphicsRectItem *rec = scene->addRect( stringToRect( rect ), QPen( QBrush( stringToColor( pen_str ) ), penwidth ), QBrush( stringToColor( br_str ) ) );
 238                                 gitem = rec;
 239                         }
 240                         else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsPixmapItem" )
 241                         {
 242                                 const QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 243                                 QImage img( url );
 244                                 ImageItem *rec = new ImageItem(img);
 245                                 scene->addItem( rec );
 246                                 gitem = rec;
 247                         }
 248                         else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsSvgItem" )
 249                         {
 250                                 const QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 251                                 QGraphicsSvgItem *rec = new QGraphicsSvgItem(url);
 252                                 scene->addItem(rec);
 253                                 gitem = rec;
 254                         }
 255                 }
 256                 //pos and transform
 257                 if ( gitem )
 258                 {
 259                         QPointF p( items.item( i ).namedItem( "position" ).attributes().namedItem( "x" ).nodeValue().toDouble(),
 260                                    items.item( i ).namedItem( "position" ).attributes().namedItem( "y" ).nodeValue().toDouble() );
 261                         gitem->setPos( p );
 262                         gitem->setTransform( stringToTransform( items.item( i ).namedItem( "position" ).firstChild().firstChild().nodeValue() ) );
 263                         int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 264                         gitem->setZValue( zValue );
 265
 266 #if QT_VERSION >= 0x040600
 267                         // effects
 268                         QDomNode eff = items.item(i).namedItem("effect");
 269                         if (!eff.isNull()) {
 270                                 QDomElement e = eff.toElement();
 271                                 if (e.attribute("type") == "blur") {
 272                                         QGraphicsBlurEffect *blur = new QGraphicsBlurEffect();
 273                                         blur->setBlurRadius(e.attribute("blurradius").toInt());
 274                                         gitem->setGraphicsEffect(blur);
 275                                 }
 276                                 else if (e.attribute("type") == "shadow") {
 277                                         QGraphicsDropShadowEffect *shadow = new QGraphicsDropShadowEffect();
 278                                         shadow->setBlurRadius(e.attribute("blurradius").toInt());
 279                                         shadow->setOffset(e.attribute("xoffset").toInt(), e.attribute("yoffset").toInt());
 280                                         gitem->setGraphicsEffect(shadow);
 281                                 }
 282                         }
 283 #endif
 284                 }
 285         }
 286
 287         QDomNode n = title.firstChildElement("background");
 288         if (!n.isNull()) {
 289                 QColor color = QColor( stringToColor( n.attributes().namedItem( "color" ).nodeValue() ) );
 290                 if (color.alpha() > 0) {
 291                         QGraphicsRectItem *rec = scene->addRect(0, 0, scene->width(), scene->height() , QPen( Qt::NoPen ), QBrush( color ) );
 292                         rec->setZValue(-1100);
 293                 }
 294
 295         }
 296
 297         QString startRect;
 298         n = title.firstChildElement( "startviewport" );
 299         // Check if node exists, if it has an x attribute, it is an old version title, don't use viewport
 300         if (!n.isNull() && !n.toElement().hasAttribute("x"))
 301         {
 302                 startRect = n.attributes().namedItem( "rect" ).nodeValue();
 303         }
 304         n = title.firstChildElement( "endviewport" );
 305         // Check if node exists, if it has an x attribute, it is an old version title, don't use viewport
 306         if (!n.isNull() && !n.toElement().hasAttribute("x"))
 307         {
 308                 QString rect = n.attributes().namedItem( "rect" ).nodeValue();
 309                 if (startRect != rect)
 310                         mlt_properties_set( producer_props, "_endrect", rect.toUtf8().data() );
 311         }
 312         if (!startRect.isEmpty()) {
 313                 mlt_properties_set( producer_props, "_startrect", startRect.toUtf8().data() );
 314         }
 315         return;
 316 }
 317
 318
 319 void drawKdenliveTitle( producer_ktitle self, mlt_frame frame, int width, int height, double position, int force_refresh )
 320 {
 321         // Obtain the producer
 322         mlt_producer producer = &self->parent;
 323         mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
 324
 325         // Obtain properties of frame
 326         mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
 327
 328         pthread_mutex_lock( &self->mutex );
 329
 330         // Check if user wants us to reload the image
 331         if ( force_refresh == 1 || width != self->current_width || height != self->current_height || mlt_properties_get( producer_props, "_endrect" ) != NULL )
 332         {
 333                 //mlt_cache_item_close( self->image_cache );
 334                 self->current_image = NULL;
 335                 mlt_properties_set_data( producer_props, "cached_image", NULL, 0, NULL, NULL );
 336                 mlt_properties_set_int( producer_props, "force_reload", 0 );
 337         }
 338
 339         if (self->current_image == NULL) {
 340                 // restore QGraphicsScene
 341                 QGraphicsScene *scene = static_cast<QGraphicsScene *> (mlt_properties_get_data( producer_props, "qscene", NULL ));
 342
 343                 if ( force_refresh == 1 && scene )
 344                 {
 345                         scene = NULL;
 346                         mlt_properties_set_data( producer_props, "qscene", NULL, 0, NULL, NULL );
 347                 }
 348
 349                 if ( scene == NULL )
 350                 {
 351                         int argc = 1;
 352                         char* argv[1];
 353                         argv[0] = (char*) "xxx";
 354
 355                         // Warning: all Qt graphic objects (QRect, ...) must be initialized AFTER
 356                         // the QApplication is created, otherwise their will be NULL
 357
 358                         if (qApp) {
 359                                 app = qApp;
 360                         }
 361                         else {
 362 #ifdef linux
 363                                 if ( getenv("DISPLAY") == 0 )
 364                                 {
 365                                         mlt_log_panic( MLT_PRODUCER_SERVICE( producer ), "Error, cannot render titles without an X11 environment.\nPlease either run melt from an X session or use a fake X server like xvfb:\nxvfb-run -a melt (...)\n" );
 366                                         pthread_mutex_unlock( &self->mutex );
 367                                         exit(1);
 368                                         return;
 369                                 }
 370 #endif
 371                                 app = new QApplication( argc, argv );
 372                 //fix to let the decimal point for every locale be: "."
 373                 setlocale(LC_NUMERIC,"POSIX");
 374                         }
 375                         scene = new QGraphicsScene();
 376                         scene->setSceneRect(0, 0, mlt_properties_get_int( properties, "width" ), mlt_properties_get_int( properties, "height" ));
 377                         loadFromXml( producer, scene, mlt_properties_get( producer_props, "xmldata" ), mlt_properties_get( producer_props, "templatetext" ) );
 378                         mlt_properties_set_data( producer_props, "qscene", scene, 0, ( mlt_destructor )qscene_delete, NULL );
 379                 }
 380
 381                 QRectF start = stringToRect( QString( mlt_properties_get( producer_props, "_startrect" ) ) );
 382                 QRectF end = stringToRect( QString( mlt_properties_get( producer_props, "_endrect" ) ) );
 383
 384                 int originalWidth = mlt_properties_get_int( producer_props, "_original_width" );
 385                 int originalHeight= mlt_properties_get_int( producer_props, "_original_height" );
 386                 const QRectF source( 0, 0, width, height );
 387                 if (start.isNull()) {
 388                     start = QRectF( 0, 0, originalWidth, originalHeight );
 389                 }
 390
 391                 //must be extracted from kdenlive title
 392                 QImage img( width, height, QImage::Format_ARGB32 );
 393                 img.fill( 0 );
 394                 QPainter p1;
 395                 p1.begin( &img );
 396                 p1.setRenderHints( QPainter::Antialiasing | QPainter::TextAntialiasing | QPainter::HighQualityAntialiasing );
 397                 //| QPainter::SmoothPixmapTransform );
 398                 mlt_position anim_out = mlt_properties_get_position( producer_props, "_animation_out" );
 399
 400                 if (end.isNull())
 401                 {
 402                         scene->render( &p1, source, start, Qt::IgnoreAspectRatio );
 403                 }
 404                 else if ( position > anim_out ) {
 405                         scene->render( &p1, source, end, Qt::IgnoreAspectRatio );
 406                 }
 407                 else {
 408                         double percentage = position / anim_out;
 409                         QPointF topleft = start.topLeft() + ( end.topLeft() - start.topLeft() ) * percentage;
 410                         QPointF bottomRight = start.bottomRight() + ( end.bottomRight() - start.bottomRight() ) * percentage;
 411                         const QRectF r1( topleft, bottomRight );
 412                         scene->render( &p1, source, r1, Qt::IgnoreAspectRatio );
 413                 }
 414                 p1.end();
 415
 416                 int size = width * height * 4;
 417                 uint8_t *pointer=img.bits();
 418                 QRgb* src = ( QRgb* ) pointer;
 419                 self->current_image = ( uint8_t * )mlt_pool_alloc( size );
 420                 uint8_t *dst = self->current_image;
 421
 422                 for ( int i = 0; i < width * height * 4; i += 4 )
 423                 {
 424                         *dst++=qRed( *src );
 425                         *dst++=qGreen( *src );
 426                         *dst++=qBlue( *src );
 427                         *dst++=qAlpha( *src );
 428                         src++;
 429                 }
 430
 431                 mlt_properties_set_data( producer_props, "cached_image", self->current_image, size, mlt_pool_release, NULL );
 432                 self->current_width = width;
 433                 self->current_height = height;
 434         }
 435
 436         pthread_mutex_unlock( &self->mutex );
 437         mlt_properties_set_int( properties, "width", self->current_width );
 438         mlt_properties_set_int( properties, "height", self->current_height );
 439 }
 440
 441