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  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  18  */
  19
  20 #include <QtGui/QImage>
  21 #include <QtGui/QPainter>
  22 #include <QtCore/QCoreApplication>
  23 #include <QtGui/QApplication>
  24 #include <QtCore/QDebug>
  25 #include <QtCore/QFile>
  26 #include <QtGui/QGraphicsView>
  27 #include <QtGui/QGraphicsScene>
  28 #include <QtGui/QGraphicsTextItem>
  29 #include <QtGui/QGraphicsPolygonItem>
  30 #include <QtGui/QTextCursor>
  31 #include "kdenlivetitle_wrapper.h"
  32 #include <framework/mlt_producer.h>
  33 extern "C" {
  34     void init_qt (const char* c){
  35         titleclass=new Title(QString(c));
  36     }
  37     void refresh_kdenlivetitle( uint8_t* buffer, int width, int height , double position){
  38        titleclass->drawKdenliveTitle(buffer,width,height,position);
  39        int i=0;
  40        uint8_t* pointer;
  41        //rotate bytes for correct order in mlt
  42        for (i=0;i<width*height*4;i+=4){
  43             pointer=buffer+i;
  44             uint8_t a=pointer[0],r=pointer[1],g=pointer[2],b=pointer[3];
  45             pointer[0]=g;//g
  46             pointer[1]=r;//r
  47             pointer[2]=b;//b
  48             pointer[3]=a;//a
  49        }
  50     }
  51 }
  52 Title::Title(const QString& filename){
  53     int argc=0;
  54     char* argv[1];
  55     argv[0]="xxx";
  56     if (! QApplication::activeWindow())
  57         app=new QApplication(argc,argv);
  58     //must be extracted from kdenlive title
  59     start =new QGraphicsPolygonItem(QPolygonF(QRectF(100, 100, 600, 600)));;
  60     end=new QGraphicsPolygonItem(QPolygonF(QRectF(0, 0, 300, 300)));;
  61     m_scene=new QGraphicsScene;
  62     loadDocument(filename,start,end);
  63 }
  64 void Title::drawKdenliveTitle(uint8_t * buffer ,int width,int height,double position){
  65     //qDebug() << width << height;
  66     QImage img((uchar*)buffer,width,height,width*4,QImage::Format_ARGB32);
  67     img.fill(Qt::transparent);
  68     //img.fill(66);
  69     QRectF rstart=start->boundingRect();
  70     QRectF rend=end->boundingRect();
  71     QPointF topleft=rstart.topLeft()+(rend.topLeft()-rstart.topLeft())*position;
  72     QPointF bottomRight=rstart.bottomRight()+(rend.bottomRight()-rstart.bottomRight())*position;
  73     QPainter p1;
  74     p1.begin(&img);
  75     p1.setRenderHints(QPainter::Antialiasing | QPainter::TextAntialiasing | QPainter::HighQualityAntialiasing|QPainter::SmoothPixmapTransform );
  76     m_scene->render(&p1,QRect(0,0,width,height),QRectF(topleft,bottomRight));
  77     p1.end();
  78     //qDebug() << img.hasAlphaChannel();
  79     //img.save("test.png");
  80 }
  81 int Title::loadDocument(const QString& url, QGraphicsPolygonItem* startv, QGraphicsPolygonItem* endv)
  82 {
  83     QDomDocument doc;
  84     if (!m_scene)
  85         return -1;
  86
  87         QFile file(url);
  88         if (file.open(QIODevice::ReadOnly)) {
  89             doc.setContent(&file, false);
  90             file.close();
  91         }
  92         return loadFromXml(doc, startv, endv);
  93 }
  94 int Title::loadFromXml(QDomDocument doc, QGraphicsPolygonItem* /*startv*/, QGraphicsPolygonItem* /*endv*/)
  95 {
  96     QDomNodeList titles = doc.elementsByTagName("kdenlivetitle");
  97     int maxZValue = 0;
  98     if (titles.size()) {
  99
 100         QDomNodeList items = titles.item(0).childNodes();
 101         for (int i = 0; i < items.count(); i++) {
 102             QGraphicsItem *gitem = NULL;
 103             int zValue = items.item(i).attributes().namedItem("z-index").nodeValue().toInt();
 104             if (zValue > -1000) {
 105                 if (items.item(i).attributes().namedItem("type").nodeValue() == "QGraphicsTextItem") {
 106                     QDomNamedNodeMap txtProperties = items.item(i).namedItem("content").attributes();
 107                     QFont font(txtProperties.namedItem("font").nodeValue());
 108                     font.setBold(txtProperties.namedItem("font-bold").nodeValue().toInt());
 109                     font.setItalic(txtProperties.namedItem("font-italic").nodeValue().toInt());
 110                     font.setUnderline(txtProperties.namedItem("font-underline").nodeValue().toInt());
 111                     // Older Kdenlive version did not store pixel size but point size
 112                     if (txtProperties.namedItem("font-pixel-size").isNull()) {
 113                         QFont f2;
 114                         f2.setPointSize(txtProperties.namedItem("font-size").nodeValue().toInt());
 115                         font.setPixelSize(QFontInfo(f2).pixelSize());
 116                     } else
 117                         font.setPixelSize(txtProperties.namedItem("font-pixel-size").nodeValue().toInt());
 118                     QColor col(stringToColor(txtProperties.namedItem("font-color").nodeValue()));
 119                     QGraphicsTextItem *txt = m_scene->addText(items.item(i).namedItem("content").firstChild().nodeValue(), font);
 120                     txt->setDefaultTextColor(col);
 121                     txt->setTextInteractionFlags(Qt::NoTextInteraction);
 122                     if (txtProperties.namedItem("alignment").isNull() == false) {
 123                         txt->setTextWidth(txt->boundingRect().width());
 124                         QTextCursor cur = txt->textCursor();
 125                         QTextBlockFormat format = cur.blockFormat();
 126                         format.setAlignment((Qt::Alignment) txtProperties.namedItem("alignment").nodeValue().toInt());
 127                         cur.select(QTextCursor::Document);
 128                         cur.setBlockFormat(format);
 129                         txt->setTextCursor(cur);
 130                         cur.clearSelection();
 131                         txt->setTextCursor(cur);
 132                     }
 133
 134                     if (!txtProperties.namedItem("kdenlive-axis-x-inverted").isNull()) {
 135                         //txt->setData(OriginXLeft, txtProperties.namedItem("kdenlive-axis-x-inverted").nodeValue().toInt());
 136                     }
 137                     if (!txtProperties.namedItem("kdenlive-axis-y-inverted").isNull()) {
 138                         //txt->setData(OriginYTop, txtProperties.namedItem("kdenlive-axis-y-inverted").nodeValue().toInt());
 139                     }
 140
 141                     gitem = txt;
 142                 } else if (items.item(i).attributes().namedItem("type").nodeValue() == "QGraphicsRectItem") {
 143                     QString rect = items.item(i).namedItem("content").attributes().namedItem("rect").nodeValue();
 144                     QString br_str = items.item(i).namedItem("content").attributes().namedItem("brushcolor").nodeValue();
 145                     QString pen_str = items.item(i).namedItem("content").attributes().namedItem("pencolor").nodeValue();
 146                     double penwidth = items.item(i).namedItem("content").attributes().namedItem("penwidth").nodeValue().toDouble();
 147                     QGraphicsRectItem *rec = m_scene->addRect(stringToRect(rect), QPen(QBrush(stringToColor(pen_str)), penwidth), QBrush(stringToColor(br_str)));
 148                     gitem = rec;
 149                 } else if (items.item(i).attributes().namedItem("type").nodeValue() == "QGraphicsPixmapItem") {
 150                     QString url = items.item(i).namedItem("content").attributes().namedItem("url").nodeValue();
 151                     QPixmap pix(url);
 152                     QGraphicsPixmapItem *rec = m_scene->addPixmap(pix);
 153                     rec->setData(Qt::UserRole, url);
 154                     gitem = rec;
 155                 } else if (items.item(i).attributes().namedItem("type").nodeValue() == "QGraphicsSvgItem") {
 156                     QString url = items.item(i).namedItem("content").attributes().namedItem("url").nodeValue();
 157                     //QGraphicsSvgItem *rec = new QGraphicsSvgItem(url);
 158                     //m_scene->addItem(rec);
 159                     //rec->setData(Qt::UserRole, url);
 160                     //gitem = rec;
 161                 }
 162             }
 163             //pos and transform
 164             if (gitem) {
 165                 QPointF p(items.item(i).namedItem("position").attributes().namedItem("x").nodeValue().toDouble(),
 166                           items.item(i).namedItem("position").attributes().namedItem("y").nodeValue().toDouble());
 167                 gitem->setPos(p);
 168                 gitem->setTransform(stringToTransform(items.item(i).namedItem("position").firstChild().firstChild().nodeValue()));
 169                 int zValue = items.item(i).attributes().namedItem("z-index").nodeValue().toInt();
 170                 if (zValue > maxZValue) maxZValue = zValue;
 171                 gitem->setZValue(zValue);
 172                 gitem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 173             }
 174             if (items.item(i).nodeName() == "background") {
 175                 QColor color = QColor(stringToColor(items.item(i).attributes().namedItem("color").nodeValue()));
 176                 //color.setAlpha(items.item(i).attributes().namedItem("alpha").nodeValue().toInt());
 177                 QList<QGraphicsItem *> items = m_scene->items();
 178                 for (int i = 0; i < items.size(); i++) {
 179                     if (items.at(i)->zValue() == -1100) {
 180                         ((QGraphicsRectItem *)items.at(i))->setBrush(QBrush(color));
 181                         break;
 182                     }
 183                 }
 184             } /*else if (items.item(i).nodeName() == "startviewport" && startv) {
 185                     QPointF p(items.item(i).attributes().namedItem("x").nodeValue().toDouble(), items.item(i).attributes().namedItem("y").nodeValue().toDouble());
 186                     double width = items.item(i).attributes().namedItem("size").nodeValue().toDouble();
 187                     QRectF rect(-width, -width / aspect_ratio, width*2.0, width / aspect_ratio*2.0);
 188                     kDebug() << width << rect;
 189                     startv->setPolygon(rect);
 190                     startv->setPos(p);
 191                 } else if (items.item(i).nodeName() == "endviewport" && endv) {
 192                     QPointF p(items.item(i).attributes().namedItem("x").nodeValue().toDouble(), items.item(i).attributes().namedItem("y").nodeValue().toDouble());
 193                     double width = items.item(i).attributes().namedItem("size").nodeValue().toDouble();
 194                     QRectF rect(-width, -width / aspect_ratio, width*2.0, width / aspect_ratio*2.0);
 195                     kDebug() << width << rect;
 196                     endv->setPolygon(rect);
 197                     endv->setPos(p);
 198                 }*/
 199         }
 200     }
 201     return maxZValue;
 202 }
 203
 204 QString Title::colorToString(const QColor& c)
 205 {
 206     QString ret = "%1,%2,%3,%4";
 207     ret = ret.arg(c.red()).arg(c.green()).arg(c.blue()).arg(c.alpha());
 208     return ret;
 209 }
 210
 211 QString Title::rectFToString(const QRectF& c)
 212 {
 213     QString ret = "%1,%2,%3,%4";
 214     ret = ret.arg(c.top()).arg(c.left()).arg(c.width()).arg(c.height());
 215     return ret;
 216 }
 217
 218 QRectF Title::stringToRect(const QString & s)
 219 {
 220
 221     QStringList l = s.split(',');
 222     if (l.size() < 4)
 223         return QRectF();
 224     return QRectF(l.at(0).toDouble(), l.at(1).toDouble(), l.at(2).toDouble(), l.at(3).toDouble()).normalized();
 225 }
 226
 227 QColor Title::stringToColor(const QString & s)
 228 {
 229     QStringList l = s.split(',');
 230     if (l.size() < 4)
 231         return QColor();
 232     return QColor(l.at(0).toInt(), l.at(1).toInt(), l.at(2).toInt(), l.at(3).toInt());;
 233 }
 234 QTransform Title::stringToTransform(const QString& s)
 235 {
 236     QStringList l = s.split(',');
 237     if (l.size() < 9)
 238         return QTransform();
 239     return QTransform(
 240                l.at(0).toDouble(), l.at(1).toDouble(), l.at(2).toDouble(),
 241                l.at(3).toDouble(), l.at(4).toDouble(), l.at(5).toDouble(),
 242                l.at(6).toDouble(), l.at(7).toDouble(), l.at(8).toDouble()
 243            );
 244 }