source: trunk/src/gui/painting/qprintengine_pdf.cpp@ 447

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#include <QtGui/qprintengine.h>

#include <qiodevice.h>
#include <qpainter.h>
#include <qbitmap.h>
#include <qpainterpath.h>
#include <qpaintdevice.h>
#include <qfile.h>
#include <qdebug.h>
#include <qimagewriter.h>
#include <qbuffer.h>
#include <qdatetime.h>

#ifndef QT_NO_PRINTER
#include <limits.h>
#include <math.h>
#ifndef QT_NO_COMPRESS
#include <zlib.h>
#endif

#if defined(Q_OS_WINCE)
#include "qwinfunctions_wince.h"
#endif

#include "qprintengine_pdf_p.h"
#include "private/qdrawhelper_p.h"

QT_BEGIN_NAMESPACE

extern qint64 qt_pixmap_id(const QPixmap &pixmap);
extern qint64 qt_image_id(const QImage &image);

//#define FONT_DUMP

// might be helpful for smooth transforms of images
// Can't use it though, as gs generates completely wrong images if this is true.
static const bool interpolateImages = false;

#ifdef QT_NO_COMPRESS
static const bool do_compress = false;
#else
static const bool do_compress = true;
#endif

QPdfPage::QPdfPage()
    : QPdf::ByteStream(true) // Enable file backing
{
}

void QPdfPage::streamImage(int w, int h, int object)
{
    *this << w << "0 0 " << -h << "0 " << h << "cm /Im" << object << " Do\n";
    if (!images.contains(object))
        images.append(object);
}


inline QPaintEngine::PaintEngineFeatures qt_pdf_decide_features()
{
    QPaintEngine::PaintEngineFeatures f = QPaintEngine::AllFeatures;
    f &= ~(QPaintEngine::PorterDuff | QPaintEngine::PerspectiveTransform
           | QPaintEngine::ObjectBoundingModeGradients
#ifndef USE_NATIVE_GRADIENTS
           | QPaintEngine::LinearGradientFill
#endif
           | QPaintEngine::RadialGradientFill
           | QPaintEngine::ConicalGradientFill);
    return f;
}

QPdfEngine::QPdfEngine(QPrinter::PrinterMode m)
    : QPdfBaseEngine(*new QPdfEnginePrivate(m), qt_pdf_decide_features())
{
    state = QPrinter::Idle;
}

QPdfEngine::~QPdfEngine()
{
}

bool QPdfEngine::begin(QPaintDevice *pdev)
{
    Q_D(QPdfEngine);