yacreader/YACReaderLibrary/server/controllers/covercontroller.cpp

#include "covercontroller.h"
#include "db_helper.h"  //get libraries
#include "yacreader_libraries.h"

#include "template.h"
#include "../static.h"

CoverController::CoverController() {}

void CoverController::service(HttpRequest& request, HttpResponse& response)
{

	HttpSession session=Static::sessionStore->getSession(request,response,false);

	response.setHeader("Content-Type", "image/jpeg");
	response.setHeader("Connection","close");
	//response.setHeader("Content-Type", "plain/text; charset=ISO-8859-1");

	YACReaderLibraries libraries = DBHelper::getLibraries();

	QString path = QUrl::fromPercentEncoding(request.getPath()).toLatin1();
	QStringList pathElements = path.split('/');
	QString libraryName = DBHelper::getLibraryName(pathElements.at(2).toInt());
	QString fileName = pathElements.at(4);

    bool folderCover = request.getParameter("folderCover").length()>0;

	//response.writeText(path+"<br/>");
	//response.writeText(libraryName+"<br/>");
	//response.writeText(libraries.value(libraryName)+"/.yacreaderlibrary/covers/"+fileName+"<br/>");

	//QFile file(libraries.value(libraryName)+"/.yacreaderlibrary/covers/"+fileName);
	//if (file.exists()) {
	//	if (file.open(QIODevice::ReadOnly))
	//	{
	//		qDebug("StaticFileController: Open file %s",qPrintable(file.fileName()));
	//		// Return the file content, do not store in cache
	//		while (!file.atEnd() && !file.error()) {
	//			response.write(file.read(131072));
	//		}
	//	}

	//	file.close();
	//}

	QImage img(libraries.getPath(libraryName)+"/.yacreaderlibrary/covers/"+fileName);
	if (!img.isNull()) {

        int width = 80, height = 120;
        if(session.getDisplayType()=="@2x")
        {
			width = 160;
            height = 240;
        }

        if(float(img.width())/img.height() < 0.66666)
            img = img.scaledToWidth(width,Qt::SmoothTransformation);
        else
            img = img.scaledToHeight(height,Qt::SmoothTransformation);

        QImage destImg(width,height,QImage::Format_RGB32);
        destImg.fill(Qt::black);
        QPainter p(&destImg);

        p.drawImage((width-img.width())/2,(height-img.height())/2,img);

        if(folderCover)
        {
             if(session.getDisplayType()=="@2x")
                p.drawImage(0,0,QImage(":/images/f_overlayed_retina.png"));
             else
                p.drawImage(0,0,QImage(":/images/f_overlayed.png"));
        }

		QByteArray ba;
		QBuffer buffer(&ba);
		buffer.open(QIODevice::WriteOnly);
        destImg.save(&buffer, "JPG");
		response.write(ba,true);
	}
	//DONE else, hay que devolver un 404
	else
	{
		response.setStatus(404,"not found");
		response.write("404 not found",true);
	}
}