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