Add image-to-raster conversions

src/convertworker.cpp

@@ -97,3 +97,71 @@ void ConvertWorker::convertPdf(QNetworkRequest request, QString filename, QTempo
     emit done(request, tempfile);
     qDebug() << "posted";
 }
+
+void ConvertWorker::convertImage(QNetworkRequest request, QString filename, QTemporaryFile* tempfile,
+                                 bool urf, quint32 Colors, quint32 Quality, quint32 HwResX, quint32 HwResY)
+{
+    quint32 Width = 210.0/25.4*HwResX;
+    quint32 Height = 297.0/25.4*HwResY;
+
+    QImage inImage;
+    if(!inImage.load(filename))
+    {
+        qDebug() << "failed to load";
+        emit failed();
+        return;
+    }
+
+    if(inImage.width() > inImage.height())
+    {
+        inImage = inImage.transformed(QMatrix().rotate(90.0));
+    }
+    inImage = inImage.scaled(Width, Height, Qt::KeepAspectRatio, Qt::SmoothTransformation);
+    QImage outImage = QImage(Width, Height, inImage.format());
+    outImage.fill(Qt::white);
+    QPainter painter(&outImage);
+    painter.drawImage(0,0, inImage);
+    painter.end();
+
+    QTemporaryFile tmpImage;
+    tmpImage.open();
+    qDebug() << "Raw image: " <<  tmpImage.fileName();
+    outImage.save(tmpImage.fileName(), Colors == 1 ? "pgm" : "ppm");
+    tmpImage.close();
+
+    QProcess* ppm2pwg = new QProcess(this);
+    // Yo dawg, I heard you like programs...
+    ppm2pwg->setProgram("harbour-seaprint");
+    ppm2pwg->setArguments({"ppm2pwg"});
+
+    QStringList env;
+    ppm2PwgEnv(env, urf, Quality, HwResX, HwResY, false, false);
+    qDebug() << "ppm2pwg env is " << env;
+
+    ppm2pwg->setEnvironment(env);
+    ppm2pwg->setStandardInputFile(tmpImage.fileName());
+    ppm2pwg->setStandardOutputFile(tempfile->fileName(), QIODevice::Append);
+
+    connect(ppm2pwg, SIGNAL(finished(int, QProcess::ExitStatus)), ppm2pwg, SLOT(deleteLater()));
+
+    qDebug() << "All connected";
+    ppm2pwg->start();
+
+    qDebug() << "Starting";
+
+    if(!ppm2pwg->waitForStarted())
+    {
+        qDebug() << "ppm2pwg died";
+        tempfile->deleteLater();
+        emit failed();
+        return;
+    }
+    qDebug() << "All started";
+
+    ppm2pwg->waitForFinished();
+
+    qDebug() << "Finished";
+
+    emit done(request, tempfile);
+    qDebug() << "posted";
+}

src/convertworker.h

@@ -11,7 +11,9 @@ public slots:
     void convertPdf(QNetworkRequest request, QString filename, QTemporaryFile* tempfile,
                     bool urf, quint32 Colors, quint32 Quality,
                     quint32 HwResX, quint32 HwResY, bool TwoSided, bool Tumble);
-    //convertImage();
+
+    void convertImage(QNetworkRequest request, QString filename, QTemporaryFile* tempfile,
+                      bool urf, quint32 Colors, quint32 Quality, quint32 HwResX, quint32 HwResY);
 
 signals:
     void done(QNetworkRequest request, QTemporaryFile* data);

src/ippprinter.cpp

@@ -30,6 +30,7 @@ IppPrinter::IppPrinter()
     connect(&_workerThread, &QThread::finished, _worker, &QObject::deleteLater);
 
     connect(this, &IppPrinter::doConvertPdf, _worker, &ConvertWorker::convertPdf);
+    connect(this, &IppPrinter::doConvertImage, _worker, &ConvertWorker::convertImage);
     connect(_worker, &ConvertWorker::done, this, &IppPrinter::convertDone);
     connect(_worker, &ConvertWorker::failed, this, &IppPrinter::convertFailed);
 
@@ -275,14 +276,14 @@ void IppPrinter::print(QJsonObject attrs, QString filename){
         from = Pdf;
     }
     else if (mimeType.contains("image")) {
-//        from = Image; TODO: handle image conversions
+        from = Image;
     }
 
     QJsonArray supportedMimeTypes = _attrs["document-format-supported"].toObject()["value"].toArray();
 
     qDebug() << supportedMimeTypes << supportedMimeTypes.contains(mimeType);
 
-    if(from == Pdf /*&& !supportedMimeTypes.contains("application/pdf")*/)
+    if(from == Image || (from == Pdf /*&& !supportedMimeTypes.contains("application/pdf")*/))
     {
         if(supportedMimeTypes.contains("image/pwg-raster"))
         {
@@ -303,10 +304,21 @@ void IppPrinter::print(QJsonObject attrs, QString filename){
     QString PrintColorMode = getAttrOrDefault(attrs, "print-color-mode").toString();
     quint32 Colors = PrintColorMode=="color" ? 3 : PrintColorMode=="monochrome" ? 1 : 0;
 
-    if(from == Pdf && target != NoConvert)
+    if(target != NoConvert)
     {
         file.close();
 
+        QTemporaryFile* tempfile = new QTemporaryFile();
+        tempfile->open();
+        tempfile->write(contents);
+        qDebug() << tempfile->fileName();
+        tempfile->close();
+
+        setBusyMessage("Converting");
+
+        if(from == Pdf )
+        {
+
             QString Sides = getAttrOrDefault(attrs, "sides").toString();
             bool TwoSided = false;
             bool Tumble = false;
@@ -320,17 +332,14 @@ void IppPrinter::print(QJsonObject attrs, QString filename){
                 Tumble = true;
             }
 
-        QTemporaryFile* tempfile = new QTemporaryFile();
-        tempfile->open();
-        tempfile->write(contents);
-        qDebug() << tempfile->fileName();
-        tempfile->close();
-
-        setBusyMessage("Converting");
-
             emit doConvertPdf(request, filename, tempfile, target==UrfConvert, Colors, Quality,
                               HwResX, HwResY, TwoSided, Tumble);
         }
+        else if (from == Image)
+        {
+            emit doConvertImage(request, filename, tempfile, target==UrfConvert, Colors, Quality, HwResX, HwResY);
+        }
+    }
     else
     {
         QByteArray filedata = file.readAll();

src/ippprinter.h

@@ -56,6 +56,9 @@ signals:
                       bool urf, quint32 Colors, quint32 Quality,
                       quint32 HwResX, quint32 HwResY, bool TwoSided, bool Tumble);
 
+    void doConvertImage(QNetworkRequest request, QString filename,  QTemporaryFile* tempfile, bool urf,
+                        quint32 Colors, quint32 Quality, quint32 HwResX, quint32 HwResY);
+
     void busyMessageChanged();
 
 public slots: