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>
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.
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.
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
21 #include "kdenlivetitle_wrapper.h"
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>
33 #include <QtCore/QString>
35 #include <QtXml/QDomElement>
36 #include <QtCore/QRectF>
37 #include <QtGui/QColor>
38 #include <QtGui/QWidget>
40 static QMutex g_mutex;
41 static QApplication *app = NULL;
43 class ImageItem: public QGraphicsRectItem
54 virtual void paint( QPainter *painter,
55 const QStyleOptionGraphicsItem * /*option*/,
58 painter->setRenderHint(QPainter::SmoothPixmapTransform, true);
59 painter->drawImage(QPoint(), m_img);
64 QString rectTransform( QString s, QTransform t )
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());
70 QString colorToString( const QColor& c )
72 QString ret = "%1,%2,%3,%4";
73 ret = ret.arg( c.red() ).arg( c.green() ).arg( c.blue() ).arg( c.alpha() );
77 QString rectFToString( const QRectF& c )
79 QString ret = "%1,%2,%3,%4";
80 ret = ret.arg( c.top() ).arg( c.left() ).arg( c.width() ).arg( c.height() );
84 QRectF stringToRect( const QString & s )
87 QStringList l = s.split( ',' );
90 return QRectF( l.at( 0 ).toDouble(), l.at( 1 ).toDouble(), l.at( 2 ).toDouble(), l.at( 3 ).toDouble() ).normalized();
93 QColor stringToColor( const QString & s )
95 QStringList l = s.split( ',' );
98 return QColor( l.at( 0 ).toInt(), l.at( 1 ).toInt(), l.at( 2 ).toInt(), l.at( 3 ).toInt() );
101 QTransform stringToTransform( const QString& s )
103 QStringList l = s.split( ',' );
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()
113 static void qscene_delete( void *data )
115 QGraphicsScene *scene = ( QGraphicsScene * )data;
121 void loadFromXml( mlt_producer producer, QGraphicsScene *scene, const char *templateXml, const char *templateText, int width, int height )
124 mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
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 );
138 transform = QTransform::fromScale ( (double) width / originalWidth, (double) height / originalHeight);
145 QDomNodeList items = titles.item( 0 ).childNodes();
146 for ( int i = 0; i < items.count(); i++ )
148 QGraphicsItem *gitem = NULL;
149 int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
150 if ( zValue > -1000 )
152 if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsTextItem" )
154 QDomNamedNodeMap txtProperties = items.item( i ).namedItem( "content" ).attributes();
155 QFont font( txtProperties.namedItem( "font" ).nodeValue() );
157 QDomNode node = txtProperties.namedItem( "font-bold" );
158 if ( !node.isNull() )
160 // Old: Bold/Not bold.
161 font.setBold( node.nodeValue().toInt() );
165 // New: Font weight (QFont::)
166 font.setWeight( txtProperties.namedItem( "font-weight" ).nodeValue().toInt() );
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() )
176 f2.setPointSize( txtProperties.namedItem( "font-size" ).nodeValue().toInt() );
177 font.setPixelSize( QFontInfo( f2 ).pixelSize() );
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() )
185 text = text.replace( "%s", replacementText );
187 QGraphicsTextItem *txt = new QGraphicsTextItem( text );
190 txt->setDefaultTextColor( col );
191 if ( txtProperties.namedItem( "alignment" ).isNull() == false )
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 );
204 if ( !txtProperties.namedItem( "kdenlive-axis-x-inverted" ).isNull() )
206 //txt->setData(OriginXLeft, txtProperties.namedItem("kdenlive-axis-x-inverted").nodeValue().toInt());
208 if ( !txtProperties.namedItem( "kdenlive-axis-y-inverted" ).isNull() )
210 //txt->setData(OriginYTop, txtProperties.namedItem("kdenlive-axis-y-inverted").nodeValue().toInt());
215 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsRectItem" )
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 ) ) );
224 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsPixmapItem" )
226 QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
228 ImageItem *rec = new ImageItem(img);
229 scene->addItem( rec );
230 rec->setData( Qt::UserRole, url );
233 else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsSvgItem" )
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);
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());
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);
255 if ( items.item( i ).nodeName() == "background" )
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++ )
262 if ( items.at( i )->zValue() == -1100 )
264 (( QGraphicsRectItem * )items.at( i ) )->setBrush( QBrush( color ) );
269 else if ( items.item( i ).nodeName() == "startviewport" )
271 QString rect = items.item( i ).attributes().namedItem( "rect" ).nodeValue();
272 if ( transform != QTransform() ) {
273 rect = rectTransform( rect, transform );
275 mlt_properties_set( producer_props, "_startrect", rect.toUtf8().data() );
277 else if ( items.item( i ).nodeName() == "endviewport" )
279 QString rect = items.item( i ).attributes().namedItem( "rect" ).nodeValue();
280 if ( transform != QTransform() ) {
281 rect = rectTransform( rect, transform );
283 mlt_properties_set( producer_props, "_endrect", rect.toUtf8().data() );
287 if ( !strcmp( mlt_properties_get( producer_props, "_startrect" ), mlt_properties_get( producer_props, "_endrect" ) ) )
288 mlt_properties_set( producer_props, "_endrect", "" );
293 void drawKdenliveTitle( producer_ktitle self, uint8_t * buffer, int width, int height, double position, int force_refresh )
296 // Obtain the producer
297 mlt_producer producer = &self->parent;
299 // restore cached image if any
300 mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
302 /*if ( force_refresh == 0 )
304 uint8_t * cache = ( uint8_t * )mlt_properties_get_data( producer_props, "image", NULL );
311 // restore QGraphicsScene
312 QGraphicsScene *scene = static_cast<QGraphicsScene *> (mlt_properties_get_data( producer_props, "qscene", NULL ));
314 if ( force_refresh == 1 && scene )
317 mlt_properties_set_data( producer_props, "qscene", NULL, 0, NULL, NULL );
329 app=new QApplication( argc,argv ); //, QApplication::Tty );
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 );
337 //must be extracted from kdenlive title
338 QImage img( width, height, QImage::Format_ARGB32 );
342 p1.setRenderHints( QPainter::Antialiasing | QPainter::TextAntialiasing | QPainter::HighQualityAntialiasing );
343 //| QPainter::SmoothPixmapTransform );
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 );
351 scene->render( &p1, source, source );
353 scene->render( &p1, start, source );
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 );
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 )
368 *buffer++=qRed( *src );
369 *buffer++=qGreen( *src );
370 *buffer++=qBlue( *src );
371 *buffer++=qAlpha( *src );
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 );
382 // Clear scene, we don't need it anymore
383 mlt_properties_set_data( producer_props, "qscene", NULL, 0, NULL, NULL );