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Diffstat (limited to 'src/gui/painting/qprintengine_pdf.cpp')
| -rw-r--r-- | src/gui/painting/qprintengine_pdf.cpp | 1241 |
1 files changed, 1241 insertions, 0 deletions
diff --git a/src/gui/painting/qprintengine_pdf.cpp b/src/gui/painting/qprintengine_pdf.cpp new file mode 100644 index 0000000000..b7f51606da --- /dev/null +++ b/src/gui/painting/qprintengine_pdf.cpp @@ -0,0 +1,1241 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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); + + if(!QPdfBaseEngine::begin(pdev)) { + state = QPrinter::Error; + return false; + } + d->stream->setDevice(d->outDevice); + + d->streampos = 0; + d->hasPen = true; + d->hasBrush = false; + d->clipEnabled = false; + d->allClipped = false; + + d->xrefPositions.clear(); + d->pageRoot = 0; + d->catalog = 0; + d->info = 0; + d->graphicsState = 0; + d->patternColorSpace = 0; + + d->pages.clear(); + d->imageCache.clear(); + + setActive(true); + state = QPrinter::Active; + d->writeHeader(); + newPage(); + + return true; +} + +bool QPdfEngine::end() +{ + Q_D(QPdfEngine); + d->writeTail(); + + d->stream->unsetDevice(); + QPdfBaseEngine::end(); + setActive(false); + state = QPrinter::Idle; + return true; +} + + +void QPdfEngine::drawPixmap (const QRectF &rectangle, const QPixmap &pixmap, const QRectF &sr) +{ + if (sr.isEmpty() || rectangle.isEmpty() || pixmap.isNull()) + return; + Q_D(QPdfEngine); + + QBrush b = d->brush; + + QRect sourceRect = sr.toRect(); + QPixmap pm = sourceRect != pixmap.rect() ? pixmap.copy(sourceRect) : pixmap; + QImage image = pm.toImage(); + bool bitmap = true; + const int object = d->addImage(image, &bitmap, pm.cacheKey()); + if (object < 0) + return; + + *d->currentPage << "q\n/GSa gs\n"; + *d->currentPage + << QPdf::generateMatrix(QTransform(rectangle.width() / sr.width(), 0, 0, rectangle.height() / sr.height(), + rectangle.x(), rectangle.y()) * (d->simplePen ? QTransform() : d->stroker.matrix)); + if (bitmap) { + // set current pen as d->brush + d->brush = d->pen.brush(); + } + setBrush(); + d->currentPage->streamImage(image.width(), image.height(), object); + *d->currentPage << "Q\n"; + + d->brush = b; +} + +void QPdfEngine::drawImage(const QRectF &rectangle, const QImage &image, const QRectF &sr, Qt::ImageConversionFlags) +{ + if (sr.isEmpty() || rectangle.isEmpty() || image.isNull()) + return; + Q_D(QPdfEngine); + + QRect sourceRect = sr.toRect(); + QImage im = sourceRect != image.rect() ? image.copy(sourceRect) : image; + bool bitmap = true; + const int object = d->addImage(im, &bitmap, im.cacheKey()); + if (object < 0) + return; + + *d->currentPage << "q\n/GSa gs\n"; + *d->currentPage + << QPdf::generateMatrix(QTransform(rectangle.width() / sr.width(), 0, 0, rectangle.height() / sr.height(), + rectangle.x(), rectangle.y()) * (d->simplePen ? QTransform() : d->stroker.matrix)); + setBrush(); + d->currentPage->streamImage(im.width(), im.height(), object); + *d->currentPage << "Q\n"; +} + +void QPdfEngine::drawTiledPixmap (const QRectF &rectangle, const QPixmap &pixmap, const QPointF &point) +{ + Q_D(QPdfEngine); + + bool bitmap = (pixmap.depth() == 1); + QBrush b = d->brush; + QPointF bo = d->brushOrigin; + bool hp = d->hasPen; + d->hasPen = false; + bool hb = d->hasBrush; + d->hasBrush = true; + + d->brush = QBrush(pixmap); + if (bitmap) + // #### fix bitmap case where we have a brush pen + d->brush.setColor(d->pen.color()); + + d->brushOrigin = -point; + *d->currentPage << "q\n"; + setBrush(); + + drawRects(&rectangle, 1); + *d->currentPage << "Q\n"; + + d->hasPen = hp; + d->hasBrush = hb; + d->brush = b; + d->brushOrigin = bo; +} + + +void QPdfEngine::setBrush() +{ + Q_D(QPdfEngine); + Qt::BrushStyle style = d->brush.style(); + if (style == Qt::NoBrush) + return; + + bool specifyColor; + int gStateObject = 0; + int patternObject = d->addBrushPattern(d->stroker.matrix, &specifyColor, &gStateObject); + + *d->currentPage << (patternObject ? "/PCSp cs " : "/CSp cs "); + if (specifyColor) { + QColor rgba = d->brush.color(); + if (d->colorMode == QPrinter::GrayScale) { + qreal gray = qGray(rgba.rgba())/255.; + *d->currentPage << gray << gray << gray; + } else { + *d->currentPage << rgba.redF() + << rgba.greenF() + << rgba.blueF(); + } + } + if (patternObject) + *d->currentPage << "/Pat" << patternObject; + *d->currentPage << "scn\n"; + + if (gStateObject) + *d->currentPage << "/GState" << gStateObject << "gs\n"; + else + *d->currentPage << "/GSa gs\n"; +} + +QPaintEngine::Type QPdfEngine::type() const +{ + return QPaintEngine::Pdf; +} + +bool QPdfEngine::newPage() +{ + Q_D(QPdfEngine); + if (!isActive()) + return false; + d->newPage(); + return QPdfBaseEngine::newPage(); +} + +QPdfEnginePrivate::QPdfEnginePrivate(QPrinter::PrinterMode m) + : QPdfBaseEnginePrivate(m) +{ + streampos = 0; + + stream = new QDataStream; + pageOrder = QPrinter::FirstPageFirst; + orientation = QPrinter::Portrait; + fullPage = false; +} + +QPdfEnginePrivate::~QPdfEnginePrivate() +{ + delete stream; +} + + +#ifdef USE_NATIVE_GRADIENTS +int QPdfEnginePrivate::gradientBrush(const QBrush &b, const QMatrix &matrix, int *gStateObject) +{ + const QGradient *gradient = b.gradient(); + if (!gradient) + return 0; + + QTransform inv = matrix.inverted(); + QPointF page_rect[4] = { inv.map(QPointF(0, 0)), + inv.map(QPointF(width_, 0)), + inv.map(QPointF(0, height_)), + inv.map(QPointF(width_, height_)) }; + + bool opaque = b.isOpaque(); + + QByteArray shader; + QByteArray alphaShader; + if (gradient->type() == QGradient::LinearGradient) { + const QLinearGradient *lg = static_cast<const QLinearGradient *>(gradient); + shader = QPdf::generateLinearGradientShader(lg, page_rect); + if (!opaque) + alphaShader = QPdf::generateLinearGradientShader(lg, page_rect, true); + } else { + // ############# + return 0; + } + int shaderObject = addXrefEntry(-1); + write(shader); + + QByteArray str; + QPdf::ByteStream s(&str); + s << "<<\n" + "/Type /Pattern\n" + "/PatternType 2\n" + "/Shading " << shaderObject << "0 R\n" + "/Matrix [" + << matrix.m11() + << matrix.m12() + << matrix.m21() + << matrix.m22() + << matrix.dx() + << matrix.dy() << "]\n"; + s << ">>\n" + "endobj\n"; + + int patternObj = addXrefEntry(-1); + write(str); + currentPage->patterns.append(patternObj); + + if (!opaque) { + bool ca = true; + QGradientStops stops = gradient->stops(); + int a = stops.at(0).second.alpha(); + for (int i = 1; i < stops.size(); ++i) { + if (stops.at(i).second.alpha() != a) { + ca = false; + break; + } + } + if (ca) { + *gStateObject = addConstantAlphaObject(stops.at(0).second.alpha()); + } else { + int alphaShaderObject = addXrefEntry(-1); + write(alphaShader); + + QByteArray content; + QPdf::ByteStream c(&content); + c << "/Shader" << alphaShaderObject << "sh\n"; + + QByteArray form; + QPdf::ByteStream f(&form); + f << "<<\n" + "/Type /XObject\n" + "/Subtype /Form\n" + "/BBox [0 0 " << width_ << height_ << "]\n" + "/Group <</S /Transparency >>\n" + "/Resources <<\n" + "/Shading << /Shader" << alphaShaderObject << alphaShaderObject << "0 R >>\n" + ">>\n"; + + f << "/Length " << content.length() << "\n" + ">>\n" + "stream\n" + << content + << "endstream\n" + "endobj\n"; + + int softMaskFormObject = addXrefEntry(-1); + write(form); + *gStateObject = addXrefEntry(-1); + xprintf("<< /SMask << /S /Alpha /G %d 0 R >> >>\n" + "endobj\n", softMaskFormObject); + currentPage->graphicStates.append(*gStateObject); + } + } + + return patternObj; +} +#endif + +int QPdfEnginePrivate::addConstantAlphaObject(int brushAlpha, int penAlpha) +{ + if (brushAlpha == 255 && penAlpha == 255) + return 0; + int object = alphaCache.value(QPair<uint, uint>(brushAlpha, penAlpha), 0); + if (!object) { + object = addXrefEntry(-1); + QByteArray alphaDef; + QPdf::ByteStream s(&alphaDef); + s << "<<\n/ca " << (brushAlpha/qreal(255.)) << '\n'; + s << "/CA " << (penAlpha/qreal(255.)) << "\n>>"; + xprintf("%s\nendobj\n", alphaDef.constData()); + alphaCache.insert(QPair<uint, uint>(brushAlpha, penAlpha), object); + } + if (currentPage->graphicStates.indexOf(object) < 0) + currentPage->graphicStates.append(object); + + return object; +} + +int QPdfEnginePrivate::addBrushPattern(const QTransform &m, bool *specifyColor, int *gStateObject) +{ + int paintType = 2; // Uncolored tiling + int w = 8; + int h = 8; + + *specifyColor = true; + *gStateObject = 0; + + QTransform matrix = m; + matrix.translate(brushOrigin.x(), brushOrigin.y()); + matrix = matrix * pageMatrix(); + //qDebug() << brushOrigin << matrix; + + Qt::BrushStyle style = brush.style(); + if (style == Qt::LinearGradientPattern) {// && style <= Qt::ConicalGradientPattern) { +#ifdef USE_NATIVE_GRADIENTS + *specifyColor = false; + return gradientBrush(b, matrix, gStateObject); +#else + return 0; +#endif + } + + if ((!brush.isOpaque() && brush.style() < Qt::LinearGradientPattern) || opacity != 1.0) + *gStateObject = addConstantAlphaObject(qRound(brush.color().alpha() * opacity), + qRound(pen.color().alpha() * opacity)); + + int imageObject = -1; + QByteArray pattern = QPdf::patternForBrush(brush); + if (pattern.isEmpty()) { + if (brush.style() != Qt::TexturePattern) + return 0; + QImage image = brush.texture().toImage(); + bool bitmap = true; + imageObject = addImage(image, &bitmap, qt_pixmap_id(brush.texture())); + if (imageObject != -1) { + QImage::Format f = image.format(); + if (f != QImage::Format_MonoLSB && f != QImage::Format_Mono) { + paintType = 1; // Colored tiling + *specifyColor = false; + } + w = image.width(); + h = image.height(); + QTransform m(w, 0, 0, -h, 0, h); + QPdf::ByteStream s(&pattern); + s << QPdf::generateMatrix(m); + s << "/Im" << imageObject << " Do\n"; + } + } + + QByteArray str; + QPdf::ByteStream s(&str); + s << "<<\n" + "/Type /Pattern\n" + "/PatternType 1\n" + "/PaintType " << paintType << "\n" + "/TilingType 1\n" + "/BBox [0 0 " << w << h << "]\n" + "/XStep " << w << "\n" + "/YStep " << h << "\n" + "/Matrix [" + << matrix.m11() + << matrix.m12() + << matrix.m21() + << matrix.m22() + << matrix.dx() + << matrix.dy() << "]\n" + "/Resources \n<< "; // open resource tree + if (imageObject > 0) { + s << "/XObject << /Im" << imageObject << ' ' << imageObject << "0 R >> "; + } + s << ">>\n" + "/Length " << pattern.length() << "\n" + ">>\n" + "stream\n" + << pattern + << "endstream\n" + "endobj\n"; + + int patternObj = addXrefEntry(-1); + write(str); + currentPage->patterns.append(patternObj); + return patternObj; +} + +/*! + * Adds an image to the pdf and return the pdf-object id. Returns -1 if adding the image failed. + */ +int QPdfEnginePrivate::addImage(const QImage &img, bool *bitmap, qint64 serial_no) +{ + if (img.isNull()) + return -1; + + int object = imageCache.value(serial_no); + if(object) + return object; + + QImage image = img; + QImage::Format format = image.format(); + if (image.depth() == 1 && *bitmap && img.colorTable().size() == 0) { + if (format == QImage::Format_MonoLSB) + image = image.convertToFormat(QImage::Format_Mono); + format = QImage::Format_Mono; + } else { + *bitmap = false; + if (format != QImage::Format_RGB32 && format != QImage::Format_ARGB32) { + image = image.convertToFormat(QImage::Format_ARGB32); + format = QImage::Format_ARGB32; + } + } + + int w = image.width(); + int h = image.height(); + int d = image.depth(); + + if (format == QImage::Format_Mono) { + int bytesPerLine = (w + 7) >> 3; + QByteArray data; + data.resize(bytesPerLine * h); + char *rawdata = data.data(); + for (int y = 0; y < h; ++y) { + memcpy(rawdata, image.scanLine(y), bytesPerLine); + rawdata += bytesPerLine; + } + object = writeImage(data, w, h, d, 0, 0); + } else { + QByteArray softMaskData; + bool dct = false; + QByteArray imageData; + bool hasAlpha = false; + bool hasMask = false; + + if (QImageWriter::supportedImageFormats().contains("jpeg") && colorMode != QPrinter::GrayScale) { + QBuffer buffer(&imageData); + QImageWriter writer(&buffer, "jpeg"); + writer.setQuality(94); + writer.write(image); + dct = true; + + if (format != QImage::Format_RGB32) { + softMaskData.resize(w * h); + uchar *sdata = (uchar *)softMaskData.data(); + for (int y = 0; y < h; ++y) { + const QRgb *rgb = (const QRgb *)image.scanLine(y); + for (int x = 0; x < w; ++x) { + uchar alpha = qAlpha(*rgb); + *sdata++ = alpha; + hasMask |= (alpha < 255); + hasAlpha |= (alpha != 0 && alpha != 255); + ++rgb; + } + } + } + } else { + imageData.resize(colorMode == QPrinter::GrayScale ? w * h : 3 * w * h); + uchar *data = (uchar *)imageData.data(); + softMaskData.resize(w * h); + uchar *sdata = (uchar *)softMaskData.data(); + for (int y = 0; y < h; ++y) { + const QRgb *rgb = (const QRgb *)image.scanLine(y); + if (colorMode == QPrinter::GrayScale) { + for (int x = 0; x < w; ++x) { + *(data++) = qGray(*rgb); + uchar alpha = qAlpha(*rgb); + *sdata++ = alpha; + hasMask |= (alpha < 255); + hasAlpha |= (alpha != 0 && alpha != 255); + ++rgb; + } + } else { + for (int x = 0; x < w; ++x) { + *(data++) = qRed(*rgb); + *(data++) = qGreen(*rgb); + *(data++) = qBlue(*rgb); + uchar alpha = qAlpha(*rgb); + *sdata++ = alpha; + hasMask |= (alpha < 255); + hasAlpha |= (alpha != 0 && alpha != 255); + ++rgb; + } + } + } + if (format == QImage::Format_RGB32) + hasAlpha = hasMask = false; + } + int maskObject = 0; + int softMaskObject = 0; + if (hasAlpha) { + softMaskObject = writeImage(softMaskData, w, h, 8, 0, 0); + } else if (hasMask) { + // dither the soft mask to 1bit and add it. This also helps PDF viewers + // without transparency support + int bytesPerLine = (w + 7) >> 3; + QByteArray mask(bytesPerLine * h, 0); + uchar *mdata = (uchar *)mask.data(); + const uchar *sdata = (const uchar *)softMaskData.constData(); + for (int y = 0; y < h; ++y) { + for (int x = 0; x < w; ++x) { + if (*sdata) + mdata[x>>3] |= (0x80 >> (x&7)); + ++sdata; + } + mdata += bytesPerLine; + } + maskObject = writeImage(mask, w, h, 1, 0, 0); + } + object = writeImage(imageData, w, h, colorMode == QPrinter::GrayScale ? 8 : 32, + maskObject, softMaskObject, dct); + } + imageCache.insert(serial_no, object); + return object; +} + +void QPdfEnginePrivate::drawTextItem(const QPointF &p, const QTextItemInt &ti) +{ + if (ti.charFormat.isAnchor()) { + qreal size = ti.fontEngine->fontDef.pixelSize; +#ifdef Q_WS_WIN + if (ti.fontEngine->type() == QFontEngine::Win) { + QFontEngineWin *fe = static_cast<QFontEngineWin *>(ti.fontEngine); + size = fe->tm.tmHeight; + } +#endif + int synthesized = ti.fontEngine->synthesized(); + qreal stretch = synthesized & QFontEngine::SynthesizedStretch ? ti.fontEngine->fontDef.stretch/100. : 1.; + + QTransform trans; + // Build text rendering matrix (Trm). We need it to map the text area to user + // space units on the PDF page. + trans = QTransform(size*stretch, 0, 0, size, 0, 0); + // Apply text matrix (Tm). + trans *= QTransform(1,0,0,-1,p.x(),p.y()); + // Apply page displacement (Identity for first page). + trans *= stroker.matrix; + // Apply Current Transformation Matrix (CTM) + trans *= pageMatrix(); + qreal x1, y1, x2, y2; + trans.map(0, 0, &x1, &y1); + trans.map(ti.width.toReal()/size, (ti.ascent.toReal()-ti.descent.toReal())/size, &x2, &y2); + + uint annot = addXrefEntry(-1); +#ifdef Q_DEBUG_PDF_LINKS + xprintf("<<\n/Type /Annot\n/Subtype /Link\n/Rect [%f %f %f %f]\n/Border [16 16 1]\n/A <<\n", +#else + xprintf("<<\n/Type /Annot\n/Subtype /Link\n/Rect [%f %f %f %f]\n/Border [0 0 0]\n/A <<\n", +#endif + static_cast<double>(x1), + static_cast<double>(y1), + static_cast<double>(x2), + static_cast<double>(y2)); + xprintf("/Type /Action\n/S /URI\n/URI (%s)\n", + ti.charFormat.anchorHref().toLatin1().constData()); + xprintf(">>\n>>\n"); + xprintf("endobj\n"); + + if (!currentPage->annotations.contains(annot)) { + currentPage->annotations.append(annot); + } + } + + QPdfBaseEnginePrivate::drawTextItem(p, ti); +} + +QTransform QPdfEnginePrivate::pageMatrix() const +{ + qreal scale = 72./resolution; + QTransform tmp(scale, 0.0, 0.0, -scale, 0.0, height()); + if (!fullPage) { + QRect r = pageRect(); + tmp.translate(r.left(), r.top()); + } + return tmp; +} + +void QPdfEnginePrivate::newPage() +{ + if (currentPage && currentPage->pageSize.isEmpty()) + currentPage->pageSize = QSize(width(), height()); + writePage(); + + delete currentPage; + currentPage = new QPdfPage; + currentPage->pageSize = QSize(width(), height()); + stroker.stream = currentPage; + pages.append(requestObject()); + + *currentPage << "/GSa gs /CSp cs /CSp CS\n" + << QPdf::generateMatrix(pageMatrix()) + << "q q\n"; +} + + +// For strings up to 10000 bytes only ! +void QPdfEnginePrivate::xprintf(const char* fmt, ...) +{ + if (!stream) + return; + + const int msize = 10000; + char buf[msize]; + + va_list args; + va_start(args, fmt); + int bufsize = qvsnprintf(buf, msize, fmt, args); + + Q_ASSERT(bufsize<msize); + + va_end(args); + + stream->writeRawData(buf, bufsize); + streampos += bufsize; +} + +int QPdfEnginePrivate::writeCompressed(QIODevice *dev) +{ +#ifndef QT_NO_COMPRESS + if (do_compress) { + int size = QPdfPage::chunkSize(); + int sum = 0; + ::z_stream zStruct; + zStruct.zalloc = Z_NULL; + zStruct.zfree = Z_NULL; + zStruct.opaque = Z_NULL; + if (::deflateInit(&zStruct, Z_DEFAULT_COMPRESSION) != Z_OK) { + qWarning("QPdfStream::writeCompressed: Error in deflateInit()"); + return sum; + } + zStruct.avail_in = 0; + QByteArray in, out; + out.resize(size); + while (!dev->atEnd() || zStruct.avail_in != 0) { + if (zStruct.avail_in == 0) { + in = dev->read(size); + zStruct.avail_in = in.size(); + zStruct.next_in = reinterpret_cast<unsigned char*>(in.data()); + if (in.size() <= 0) { + qWarning("QPdfStream::writeCompressed: Error in read()"); + ::deflateEnd(&zStruct); + return sum; + } + } + zStruct.next_out = reinterpret_cast<unsigned char*>(out.data()); + zStruct.avail_out = out.size(); + if (::deflate(&zStruct, 0) != Z_OK) { + qWarning("QPdfStream::writeCompressed: Error in deflate()"); + ::deflateEnd(&zStruct); + return sum; + } + int written = out.size() - zStruct.avail_out; + stream->writeRawData(out.constData(), written); + streampos += written; + sum += written; + } + int ret; + do { + zStruct.next_out = reinterpret_cast<unsigned char*>(out.data()); + zStruct.avail_out = out.size(); + ret = ::deflate(&zStruct, Z_FINISH); + if (ret != Z_OK && ret != Z_STREAM_END) { + qWarning("QPdfStream::writeCompressed: Error in deflate()"); + ::deflateEnd(&zStruct); + return sum; + } + int written = out.size() - zStruct.avail_out; + stream->writeRawData(out.constData(), written); + streampos += written; + sum += written; + } while (ret == Z_OK); + + ::deflateEnd(&zStruct); + + return sum; + } else +#endif + { + QByteArray arr; + int sum = 0; + while (!dev->atEnd()) { + arr = dev->read(QPdfPage::chunkSize()); + stream->writeRawData(arr.constData(), arr.size()); + streampos += arr.size(); + sum += arr.size(); + } + return sum; + } +} + +int QPdfEnginePrivate::writeCompressed(const char *src, int len) +{ +#ifndef QT_NO_COMPRESS + if(do_compress) { + uLongf destLen = len + len/100 + 13; // zlib requirement + Bytef* dest = new Bytef[destLen]; + if (Z_OK == ::compress(dest, &destLen, (const Bytef*) src, (uLongf)len)) { + stream->writeRawData((const char*)dest, destLen); + } else { + qWarning("QPdfStream::writeCompressed: Error in compress()"); + destLen = 0; + } + delete [] dest; + len = destLen; + } else +#endif + { + stream->writeRawData(src,len); + } + streampos += len; + return len; +} + +int QPdfEnginePrivate::writeImage(const QByteArray &data, int width, int height, int depth, + int maskObject, int softMaskObject, bool dct) +{ + int image = addXrefEntry(-1); + xprintf("<<\n" + "/Type /XObject\n" + "/Subtype /Image\n" + "/Width %d\n" + "/Height %d\n", width, height); + + if (depth == 1) { + xprintf("/ImageMask true\n" + "/Decode [1 0]\n"); + } else { + xprintf("/BitsPerComponent 8\n" + "/ColorSpace %s\n", (depth == 32) ? "/DeviceRGB" : "/DeviceGray"); + } + if (maskObject > 0) + xprintf("/Mask %d 0 R\n", maskObject); + if (softMaskObject > 0) + xprintf("/SMask %d 0 R\n", softMaskObject); + + int lenobj = requestObject(); + xprintf("/Length %d 0 R\n", lenobj); + if (interpolateImages) + xprintf("/Interpolate true\n"); + int len = 0; + if (dct) { + //qDebug() << "DCT"; + xprintf("/Filter /DCTDecode\n>>\nstream\n"); + write(data); + len = data.length(); + } else { + if (do_compress) + xprintf("/Filter /FlateDecode\n>>\nstream\n"); + else + xprintf(">>\nstream\n"); + len = writeCompressed(data); + } + xprintf("endstream\n" + "endobj\n"); + addXrefEntry(lenobj); + xprintf("%d\n" + "endobj\n", len); + return image; +} + + +void QPdfEnginePrivate::writeHeader() +{ + addXrefEntry(0,false); + + xprintf("%%PDF-1.4\n"); + + writeInfo(); + + catalog = addXrefEntry(-1); + pageRoot = requestObject(); + xprintf("<<\n" + "/Type /Catalog\n" + "/Pages %d 0 R\n" + ">>\n" + "endobj\n", pageRoot); + + // graphics state + graphicsState = addXrefEntry(-1); + xprintf("<<\n" + "/Type /ExtGState\n" + "/SA true\n" + "/SM 0.02\n" + "/ca 1.0\n" + "/CA 1.0\n" + "/AIS false\n" + "/SMask /None" + ">>\n" + "endobj\n"); + + // color space for pattern + patternColorSpace = addXrefEntry(-1); + xprintf("[/Pattern /DeviceRGB]\n" + "endobj\n"); +} + +void QPdfEnginePrivate::writeInfo() +{ + info = addXrefEntry(-1); + xprintf("<<\n/Title "); + printString(title); + xprintf("\n/Creator "); + printString(creator); + xprintf("\n/Producer "); + printString(QString::fromLatin1("Qt " QT_VERSION_STR " (C) 2011 Nokia Corporation and/or its subsidiary(-ies)")); + QDateTime now = QDateTime::currentDateTime().toUTC(); + QTime t = now.time(); + QDate d = now.date(); + xprintf("\n/CreationDate (D:%d%02d%02d%02d%02d%02d)\n", + d.year(), + d.month(), + d.day(), + t.hour(), + t.minute(), + t.second()); + xprintf(">>\n" + "endobj\n"); +} + +void QPdfEnginePrivate::writePageRoot() +{ + addXrefEntry(pageRoot); + + xprintf("<<\n" + "/Type /Pages\n" + "/Kids \n" + "[\n"); + int size = pages.size(); + for (int i = 0; i < size; ++i) + xprintf("%d 0 R\n", pages[i]); + xprintf("]\n"); + + //xprintf("/Group <</S /Transparency /I true /K false>>\n"); + xprintf("/Count %d\n", pages.size()); + + xprintf("/ProcSet [/PDF /Text /ImageB /ImageC]\n" + ">>\n" + "endobj\n"); +} + + +void QPdfEnginePrivate::embedFont(QFontSubset *font) +{ + //qDebug() << "embedFont" << font->object_id; + int fontObject = font->object_id; + QByteArray fontData = font->toTruetype(); +#ifdef FONT_DUMP + static int i = 0; + QString fileName("font%1.ttf"); + fileName = fileName.arg(i++); + QFile ff(fileName); + ff.open(QFile::WriteOnly); + ff.write(fontData); + ff.close(); +#endif + + int fontDescriptor = requestObject(); + int fontstream = requestObject(); + int cidfont = requestObject(); + int toUnicode = requestObject(); + + QFontEngine::Properties properties = font->fontEngine->properties(); + + { + qreal scale = 1000/properties.emSquare.toReal(); + addXrefEntry(fontDescriptor); + QByteArray descriptor; + QPdf::ByteStream s(&descriptor); + s << "<< /Type /FontDescriptor\n" + "/FontName /Q"; + int tag = fontDescriptor; + for (int i = 0; i < 5; ++i) { + s << (char)('A' + (tag % 26)); + tag /= 26; + } + s << '+' << properties.postscriptName << "\n" + "/Flags " << 4 << "\n" + "/FontBBox [" + << properties.boundingBox.x()*scale + << -(properties.boundingBox.y() + properties.boundingBox.height())*scale + << (properties.boundingBox.x() + properties.boundingBox.width())*scale + << -properties.boundingBox.y()*scale << "]\n" + "/ItalicAngle " << properties.italicAngle.toReal() << "\n" + "/Ascent " << properties.ascent.toReal()*scale << "\n" + "/Descent " << -properties.descent.toReal()*scale << "\n" + "/CapHeight " << properties.capHeight.toReal()*scale << "\n" + "/StemV " << properties.lineWidth.toReal()*scale << "\n" + "/FontFile2 " << fontstream << "0 R\n" + ">> endobj\n"; + write(descriptor); + } + { + addXrefEntry(fontstream); + QByteArray header; + QPdf::ByteStream s(&header); + + int length_object = requestObject(); + s << "<<\n" + "/Length1 " << fontData.size() << "\n" + "/Length " << length_object << "0 R\n"; + if (do_compress) + s << "/Filter /FlateDecode\n"; + s << ">>\n" + "stream\n"; + write(header); + int len = writeCompressed(fontData); + write("endstream\n" + "endobj\n"); + addXrefEntry(length_object); + xprintf("%d\n" + "endobj\n", len); + } + { + addXrefEntry(cidfont); + QByteArray cid; + QPdf::ByteStream s(&cid); + s << "<< /Type /Font\n" + "/Subtype /CIDFontType2\n" + "/BaseFont /" << properties.postscriptName << "\n" + "/CIDSystemInfo << /Registry (Adobe) /Ordering (Identity) /Supplement 0 >>\n" + "/FontDescriptor " << fontDescriptor << "0 R\n" + "/CIDToGIDMap /Identity\n" + << font->widthArray() << + ">>\n" + "endobj\n"; + write(cid); + } + { + addXrefEntry(toUnicode); + QByteArray touc = font->createToUnicodeMap(); + xprintf("<< /Length %d >>\n" + "stream\n", touc.length()); + write(touc); + write("endstream\n" + "endobj\n"); + } + { + addXrefEntry(fontObject); + QByteArray font; + QPdf::ByteStream s(&font); + s << "<< /Type /Font\n" + "/Subtype /Type0\n" + "/BaseFont /" << properties.postscriptName << "\n" + "/Encoding /Identity-H\n" + "/DescendantFonts [" << cidfont << "0 R]\n" + "/ToUnicode " << toUnicode << "0 R" + ">>\n" + "endobj\n"; + write(font); + } +} + + +void QPdfEnginePrivate::writeFonts() +{ + for (QHash<QFontEngine::FaceId, QFontSubset *>::iterator it = fonts.begin(); it != fonts.end(); ++it) { + embedFont(*it); + delete *it; + } + fonts.clear(); +} + +void QPdfEnginePrivate::writePage() +{ + if (pages.empty()) + return; + + *currentPage << "Q Q\n"; + + uint pageStream = requestObject(); + uint pageStreamLength = requestObject(); + uint resources = requestObject(); + uint annots = requestObject(); + + addXrefEntry(pages.last()); + xprintf("<<\n" + "/Type /Page\n" + "/Parent %d 0 R\n" + "/Contents %d 0 R\n" + "/Resources %d 0 R\n" + "/Annots %d 0 R\n" + "/MediaBox [0 0 %d %d]\n" + ">>\n" + "endobj\n", + pageRoot, pageStream, resources, annots, + // make sure we use the pagesize from when we started the page, since the user may have changed it + currentPage->pageSize.width(), currentPage->pageSize.height()); + + addXrefEntry(resources); + xprintf("<<\n" + "/ColorSpace <<\n" + "/PCSp %d 0 R\n" + "/CSp /DeviceRGB\n" + "/CSpg /DeviceGray\n" + ">>\n" + "/ExtGState <<\n" + "/GSa %d 0 R\n", + patternColorSpace, graphicsState); + + for (int i = 0; i < currentPage->graphicStates.size(); ++i) + xprintf("/GState%d %d 0 R\n", currentPage->graphicStates.at(i), currentPage->graphicStates.at(i)); + xprintf(">>\n"); + + xprintf("/Pattern <<\n"); + for (int i = 0; i < currentPage->patterns.size(); ++i) + xprintf("/Pat%d %d 0 R\n", currentPage->patterns.at(i), currentPage->patterns.at(i)); + xprintf(">>\n"); + + xprintf("/Font <<\n"); + for (int i = 0; i < currentPage->fonts.size();++i) + xprintf("/F%d %d 0 R\n", currentPage->fonts[i], currentPage->fonts[i]); + xprintf(">>\n"); + + xprintf("/XObject <<\n"); + for (int i = 0; i<currentPage->images.size(); ++i) { + xprintf("/Im%d %d 0 R\n", currentPage->images.at(i), currentPage->images.at(i)); + } + xprintf(">>\n"); + + xprintf(">>\n" + "endobj\n"); + + addXrefEntry(annots); + xprintf("[ "); + for (int i = 0; i<currentPage->annotations.size(); ++i) { + xprintf("%d 0 R ", currentPage->annotations.at(i)); + } + xprintf("]\nendobj\n"); + + addXrefEntry(pageStream); + xprintf("<<\n" + "/Length %d 0 R\n", pageStreamLength); // object number for stream length object + if (do_compress) + xprintf("/Filter /FlateDecode\n"); + + xprintf(">>\n"); + xprintf("stream\n"); + QIODevice *content = currentPage->stream(); + int len = writeCompressed(content); + xprintf("endstream\n" + "endobj\n"); + + addXrefEntry(pageStreamLength); + xprintf("%d\nendobj\n",len); +} + +void QPdfEnginePrivate::writeTail() +{ + writePage(); + writeFonts(); + writePageRoot(); + addXrefEntry(xrefPositions.size(),false); + xprintf("xref\n" + "0 %d\n" + "%010d 65535 f \n", xrefPositions.size()-1, xrefPositions[0]); + + for (int i = 1; i < xrefPositions.size()-1; ++i) + xprintf("%010d 00000 n \n", xrefPositions[i]); + + xprintf("trailer\n" + "<<\n" + "/Size %d\n" + "/Info %d 0 R\n" + "/Root %d 0 R\n" + ">>\n" + "startxref\n%d\n" + "%%%%EOF\n", + xrefPositions.size()-1, info, catalog, xrefPositions.last()); +} + +int QPdfEnginePrivate::addXrefEntry(int object, bool printostr) +{ + if (object < 0) + object = requestObject(); + + if (object>=xrefPositions.size()) + xrefPositions.resize(object+1); + + xrefPositions[object] = streampos; + if (printostr) + xprintf("%d 0 obj\n",object); + + return object; +} + +void QPdfEnginePrivate::printString(const QString &string) { + // The 'text string' type in PDF is encoded either as PDFDocEncoding, or + // Unicode UTF-16 with a Unicode byte order mark as the first character + // (0xfeff), with the high-order byte first. + QByteArray array("(\xfe\xff"); + const ushort *utf16 = string.utf16(); + + for (int i=0; i < string.size(); ++i) { + char part[2] = {char((*(utf16 + i)) >> 8), char((*(utf16 + i)) & 0xff)}; + for(int j=0; j < 2; ++j) { + if (part[j] == '(' || part[j] == ')' || part[j] == '\\') + array.append('\\'); + array.append(part[j]); + } + } + array.append(")"); + write(array); +} + +QT_END_NAMESPACE + +#endif // QT_NO_PRINTER |