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#include "XPDFRenderer.h"
#include <QtGui>
#include <frameworks/UBPlatformUtils.h>
#include <xpdf/SplashBitmap.h>
#include <xpdf/Object.h>
#include <xpdf/GlobalParams.h>
#include <xpdf/SplashOutputDev.h>
#include <xpdf/PDFDoc.h>
QAtomicInt XPDFRenderer::sInstancesCount = 0;
XPDFRenderer::XPDFRenderer(const QString &filename)
: mDocument(0)
{
if (!globalParams)
{
// globalParams must be allocated once and never be deleted
// note that this is *not* an instance variable of this XPDFRenderer class
globalParams = new GlobalParams(0);
globalParams->setupBaseFonts(QFile::encodeName(UBPlatformUtils::applicationResourcesDirectory() + "/" + "fonts").data());
//globalParams->setPrintCommands(gTrue);
}
mDocument = new PDFDoc(new GString(filename.toUtf8().data()), 0, 0, 0); // the filename GString is deleted on PDFDoc desctruction
sInstancesCount.ref();
}
XPDFRenderer::~XPDFRenderer()
{
if (mDocument)
{
delete mDocument;
sInstancesCount.deref();
}
if (sInstancesCount == 0 && globalParams)
{
delete globalParams;
globalParams = 0;
}
}
bool XPDFRenderer::isValid() const
{
if (mDocument)
{
return mDocument->isOk();
}
else
{
return false;
}
}
int XPDFRenderer::pageCount() const
{
if (isValid())
return mDocument->getNumPages();
else
return 0;
}
QString XPDFRenderer::title() const
{
if (isValid())
{
Object pdfInfo;
mDocument->getDocInfo(&pdfInfo);
if (pdfInfo.isDict())
{
Object title;
Dict *infoDict = pdfInfo.getDict();
if (infoDict->lookup((char*)"Title", &title)->isString())
{
GString *gstring = title.getString();
return QString(gstring->getCString());
}
}
}
return QString();
}
QSizeF XPDFRenderer::pageSizeF(int pageNumber) const
{
qreal cropWidth = 0;
qreal cropHeight = 0;
if (isValid())
{
int rotate = mDocument->getPageRotate(pageNumber);
cropWidth = mDocument->getPageCropWidth(pageNumber);
cropHeight = mDocument->getPageCropHeight(pageNumber);
if ((rotate == 90) || (rotate == 270))
{
cropWidth = mDocument->getPageCropHeight(pageNumber);
cropHeight = mDocument->getPageCropWidth(pageNumber);
}
}
return QSizeF(cropWidth, cropHeight);
}
int XPDFRenderer::pageRotation(int pageNumber) const
{
if (mDocument)
return mDocument->getPageRotate(pageNumber);
else
return 0;
}
void XPDFRenderer::render(QPainter *p, int pageNumber, const QRectF &bounds)
{
if (isValid())
{
SplashColor paperColor = {0xFF, 0xFF, 0xFF}; // white
SplashOutputDev splash(splashModeRGB8, 1, gFalse, paperColor);
splash.startDoc(mDocument->getXRef());
int hResolution = 72;
int vResolution = 72;
int rotation = 0; // in degrees (get it from the worldTransform if we want to support rotation)
GBool useMediaBox = gFalse;
GBool crop = gTrue;
GBool printing = gFalse;
const qreal xScale = p->worldTransform().m11();
const qreal yScale = p->worldTransform().m22();
qreal sliceX = 0.;
qreal sliceY = 0.;
if (bounds.isNull())
{
mDocument->displayPage(&splash, pageNumber, hResolution * xScale, vResolution * yScale,
rotation, useMediaBox, crop, printing);
}
else
{
sliceX = bounds.x() * xScale;
sliceY = bounds.y() * yScale;
qreal sliceW = bounds.width() * xScale;
qreal sliceH = bounds.height() * yScale;
mDocument->displayPageSlice(&splash, pageNumber, hResolution * xScale, vResolution * yScale,
rotation, useMediaBox, crop, printing, sliceX, sliceY, sliceW, sliceH);
}
SplashBitmap *bitmap = splash.getBitmap();
QImage pdfImage(bitmap->getDataPtr(), bitmap->getWidth(), bitmap->getHeight(), bitmap->getWidth() * 3, QImage::Format_RGB888);
QTransform savedTransform = p->worldTransform();
p->resetTransform();
p->drawImage(QPointF(savedTransform.dx() + sliceX, savedTransform.dy() + sliceY), pdfImage);
p->setWorldTransform(savedTransform);
}
}