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
  34 static Title* titleclass;
  35 static QApplication *app;
  36
  37 extern "C" {
  38     void init_qt (const char* c){
  39         titleclass=new Title(QString(c));
  40     }
  41     void refresh_kdenlivetitle( uint8_t* buffer, int width, int height , double position){
  42         titleclass->drawKdenliveTitle(buffer,width,height,position);
  43     }
  44 }
  45 Title::Title(const QString& filename):m_filename(filename),m_scene(NULL){
  46     //must be extracted from kdenlive title
  47     start =new QGraphicsPolygonItem(QPolygonF(QRectF(100, 100, 600, 600)));;
  48     end=new QGraphicsPolygonItem(QPolygonF(QRectF(0, 0, 300, 300)));;
  49 }
  50 void Title::drawKdenliveTitle(uint8_t * buffer ,int width,int height,double position){
  51     if (!m_scene){
  52         int argc=0;
  53         char* argv[1];
  54         argv[0]="xxx";
  55         if (! QApplication::activeWindow())
  56         //if (!app)
  57             app=new QApplication(argc,argv);
  58         m_scene=new QGraphicsScene;
  59         loadDocument(m_filename,start,end);
  60     }
  61     //must be extracted from kdenlive title
  62
  63     QImage *img=new QImage(width,height,QImage::Format_ARGB32);
  64     img->fill(0);
  65     QRectF rstart=start->boundingRect();
  66     QRectF rend=end->boundingRect();
  67     QPointF topleft=rstart.topLeft()+(rend.topLeft()-rstart.topLeft())*position;
  68     QPointF bottomRight=rstart.bottomRight()+(rend.bottomRight()-rstart.bottomRight())*position;
  69     QPainter p1;
  70     p1.begin(img);
  71     p1.setRenderHints(QPainter::Antialiasing | QPainter::TextAntialiasing | QPainter::HighQualityAntialiasing);//|QPainter::SmoothPixmapTransform );
  72     m_scene->render(&p1,QRect(0,0,width,height),QRectF(topleft,bottomRight));
  73     p1.end();
  74     uint8_t *pointer=img->bits();
  75     QRgb* src = (QRgb*) pointer;
  76     for (int i=0;i<width*height*4;i+=4){
  77         *buffer++=qRed(*src);
  78         *buffer++=qGreen(*src);
  79         *buffer++=qBlue(*src);
  80         *buffer++=qAlpha(*src);
  81         src++;
  82     }
  83     delete img;
  84 }
  85 int Title::loadDocument(const QString& url, QGraphicsPolygonItem* startv, QGraphicsPolygonItem* endv)
  86 {
  87     QDomDocument doc;
  88     if (!m_scene)
  89         return -1;
  90
  91         QFile file(url);
  92         if (file.open(QIODevice::ReadOnly)) {
  93             doc.setContent(&file, false);
  94             file.close();
  95         }
  96         return loadFromXml(doc, startv, endv);
  97 }
  98 int Title::loadFromXml(QDomDocument doc, QGraphicsPolygonItem* startv, QGraphicsPolygonItem* endv)
  99 {
 100     QDomNodeList titles = doc.elementsByTagName("kdenlivetitle");
 101     int maxZValue = 0;
 102     if (titles.size()) {
 103
 104         QDomNodeList items = titles.item(0).childNodes();
 105         for (int i = 0; i < items.count(); i++) {
 106             QGraphicsItem *gitem = NULL;
 107             int zValue = items.item(i).attributes().namedItem("z-index").nodeValue().toInt();
 108             if (zValue > -1000) {
 109                 if (items.item(i).attributes().namedItem("type").nodeValue() == "QGraphicsTextItem") {
 110                     QDomNamedNodeMap txtProperties = items.item(i).namedItem("content").attributes();
 111                     QFont font(txtProperties.namedItem("font").nodeValue());
 112                     font.setBold(txtProperties.namedItem("font-bold").nodeValue().toInt());
 113                     font.setItalic(txtProperties.namedItem("font-italic").nodeValue().toInt());
 114                     font.setUnderline(txtProperties.namedItem("font-underline").nodeValue().toInt());
 115                     // Older Kdenlive version did not store pixel size but point size
 116                     if (txtProperties.namedItem("font-pixel-size").isNull()) {
 117                         QFont f2;
 118                         f2.setPointSize(txtProperties.namedItem("font-size").nodeValue().toInt());
 119                         font.setPixelSize(QFontInfo(f2).pixelSize());
 120                     } else
 121                         font.setPixelSize(txtProperties.namedItem("font-pixel-size").nodeValue().toInt());
 122                     QColor col(stringToColor(txtProperties.namedItem("font-color").nodeValue()));
 123                     QGraphicsTextItem *txt = m_scene->addText(items.item(i).namedItem("content").firstChild().nodeValue(), font);
 124                     txt->setDefaultTextColor(col);
 125                     txt->setTextInteractionFlags(Qt::NoTextInteraction);
 126                     if (txtProperties.namedItem("alignment").isNull() == false) {
 127                         txt->setTextWidth(txt->boundingRect().width());
 128                         QTextCursor cur = txt->textCursor();
 129                         QTextBlockFormat format = cur.blockFormat();
 130                         format.setAlignment((Qt::Alignment) txtProperties.namedItem("alignment").nodeValue().toInt());
 131                         cur.select(QTextCursor::Document);
 132                         cur.setBlockFormat(format);
 133                         txt->setTextCursor(cur);
 134                         cur.clearSelection();
 135                         txt->setTextCursor(cur);
 136                     }
 137
 138                     if (!txtProperties.namedItem("kdenlive-axis-x-inverted").isNull()) {
 139                         //txt->setData(OriginXLeft, txtProperties.namedItem("kdenlive-axis-x-inverted").nodeValue().toInt());
 140                     }
 141                     if (!txtProperties.namedItem("kdenlive-axis-y-inverted").isNull()) {
 142                         //txt->setData(OriginYTop, txtProperties.namedItem("kdenlive-axis-y-inverted").nodeValue().toInt());
 143                     }
 144
 145                     gitem = txt;
 146                 } else if (items.item(i).attributes().namedItem("type").nodeValue() == "QGraphicsRectItem") {
 147                     QString rect = items.item(i).namedItem("content").attributes().namedItem("rect").nodeValue();
 148                     QString br_str = items.item(i).namedItem("content").attributes().namedItem("brushcolor").nodeValue();
 149                     QString pen_str = items.item(i).namedItem("content").attributes().namedItem("pencolor").nodeValue();
 150                     double penwidth = items.item(i).namedItem("content").attributes().namedItem("penwidth").nodeValue().toDouble();
 151                     QGraphicsRectItem *rec = m_scene->addRect(stringToRect(rect), QPen(QBrush(stringToColor(pen_str)), penwidth), QBrush(stringToColor(br_str)));
 152                     gitem = rec;
 153                 } else if (items.item(i).attributes().namedItem("type").nodeValue() == "QGraphicsPixmapItem") {
 154                     QString url = items.item(i).namedItem("content").attributes().namedItem("url").nodeValue();
 155                     QPixmap pix(url);
 156                     QGraphicsPixmapItem *rec = m_scene->addPixmap(pix);
 157                     rec->setData(Qt::UserRole, url);
 158                     gitem = rec;
 159                 } else if (items.item(i).attributes().namedItem("type").nodeValue() == "QGraphicsSvgItem") {
 160                     QString url = items.item(i).namedItem("content").attributes().namedItem("url").nodeValue();
 161                     //QGraphicsSvgItem *rec = new QGraphicsSvgItem(url);
 162                     //m_scene->addItem(rec);
 163                     //rec->setData(Qt::UserRole, url);
 164                     //gitem = rec;
 165                 }
 166             }
 167             //pos and transform
 168             if (gitem) {
 169                 QPointF p(items.item(i).namedItem("position").attributes().namedItem("x").nodeValue().toDouble(),
 170                           items.item(i).namedItem("position").attributes().namedItem("y").nodeValue().toDouble());
 171                 gitem->setPos(p);
 172                 gitem->setTransform(stringToTransform(items.item(i).namedItem("position").firstChild().firstChild().nodeValue()));
 173                 int zValue = items.item(i).attributes().namedItem("z-index").nodeValue().toInt();
 174                 if (zValue > maxZValue) maxZValue = zValue;
 175                 gitem->setZValue(zValue);
 176                 //gitem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 177             }
 178             if (items.item(i).nodeName() == "background") {
 179                 QColor color = QColor(stringToColor(items.item(i).attributes().namedItem("color").nodeValue()));
 180                 //color.setAlpha(items.item(i).attributes().namedItem("alpha").nodeValue().toInt());
 181                 QList<QGraphicsItem *> items = m_scene->items();
 182                 for (int i = 0; i < items.size(); i++) {
 183                     if (items.at(i)->zValue() == -1100) {
 184                         ((QGraphicsRectItem *)items.at(i))->setBrush(QBrush(color));
 185                         break;
 186                     }
 187                 }
 188             } else if (items.item(i).nodeName() == "startviewport" && startv) {
 189                     QString rect = items.item(i).attributes().namedItem("rect").nodeValue();
 190                     startv->setPolygon(stringToRect(rect));
 191                 } else if (items.item(i).nodeName() == "endviewport" && endv) {
 192                     QString rect = items.item(i).attributes().namedItem("rect").nodeValue();
 193                     endv->setPolygon(stringToRect(rect));
 194                 }
 195         }
 196     }
 197     return maxZValue;
 198 }
 199
 200 QString Title::colorToString(const QColor& c)
 201 {
 202     QString ret = "%1,%2,%3,%4";
 203     ret = ret.arg(c.red()).arg(c.green()).arg(c.blue()).arg(c.alpha());
 204     return ret;
 205 }
 206
 207 QString Title::rectFToString(const QRectF& c)
 208 {
 209     QString ret = "%1,%2,%3,%4";
 210     ret = ret.arg(c.top()).arg(c.left()).arg(c.width()).arg(c.height());
 211     return ret;
 212 }
 213
 214 QRectF Title::stringToRect(const QString & s)
 215 {
 216
 217     QStringList l = s.split(',');
 218     if (l.size() < 4)
 219         return QRectF();
 220     return QRectF(l.at(0).toDouble(), l.at(1).toDouble(), l.at(2).toDouble(), l.at(3).toDouble()).normalized();
 221 }
 222
 223 QColor Title::stringToColor(const QString & s)
 224 {
 225     QStringList l = s.split(',');
 226     if (l.size() < 4)
 227         return QColor();
 228     return QColor(l.at(0).toInt(), l.at(1).toInt(), l.at(2).toInt(), l.at(3).toInt());;
 229 }
 230 QTransform Title::stringToTransform(const QString& s)
 231 {
 232     QStringList l = s.split(',');
 233     if (l.size() < 9)
 234         return QTransform();
 235     return QTransform(
 236                l.at(0).toDouble(), l.at(1).toDouble(), l.at(2).toDouble(),
 237                l.at(3).toDouble(), l.at(4).toDouble(), l.at(5).toDouble(),
 238                l.at(6).toDouble(), l.at(7).toDouble(), l.at(8).toDouble()
 239            );
 240 }