qprintengine_ps.cpp

qt-x11-opensource-src-4.1.4.tar.gz源码

/****************************************************************************
**
** Copyright (C) 1992-2006 Trolltech ASA. All rights reserved.
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file.  Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://www.trolltech.com/products/qt/licensing.html or contact the
** sales department at [e-mail].
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

#include "qplatformdefs.h"

#include <private/qprintengine_ps_p.h>
#include <private/qpainter_p.h>
#include <private/qfontengine_p.h>
#include <private/qpaintengine_p.h>
#include <private/qpdf_p.h>

// <X11/Xlib.h> redefines Status -> int
#if defined(Status)
# undef Status
#endif

#ifndef QT_NO_PRINTER

#include "qprinter.h"
#include "qpainter.h"
#include "qapplication.h"
#include "qpixmap.h"
#include "qimage.h"
#include "qdatetime.h"
#include "qstring.h"
#include "qbytearray.h"
#include "qhash.h"
#include "qbuffer.h"
#include "qfile.h"
#include "qsettings.h"
#include "qmap.h"
#include "qbitmap.h"
#include "qregion.h"
#include "qimagewriter.h"
#include <private/qunicodetables_p.h>
#include <private/qpainterpath_p.h>
#include <qdebug.h>
#include <private/qdrawhelper_p.h>

#include <unistd.h>
#include <stdlib.h>
#include <limits.h>

#if defined (Q_WS_X11) || defined (Q_WS_QWS)
#include <qtextlayout.h>
#endif

#ifdef Q_WS_X11
#include <qx11info_x11.h>
#include <private/qt_x11_p.h>
#endif

static bool qt_gen_epsf = false;

void qt_generate_epsf(bool b)
{
    qt_gen_epsf = b;
}

extern int qt_defaultDpi();

static const char *const ps_header =
"/BD{bind def}bind def/d2{dup dup}BD/ED{exch def}BD/D0{0 ED}BD/F{setfont}BD\n"
"/RL{rlineto}BD/CM{currentmatrix}BD/SM{setmatrix}BD/TR{translate}BD/SD\n"
"{setdash}BD/SC{aload pop setrgbcolor}BD/CR{currentfile read pop}BD/i{index}\n"
"BD/scs{setcolorspace}BD/DB{dict dup begin}BD/DE{end def}BD/ie{ifelse}BD/gs\n"
"{gsave}BD/gr{grestore}BD/w{setlinewidth}BD/d{setdash}BD/J{setlinecap}BD/j\n"
"{setlinejoin}BD/scn{3 array astore/BCol exch def}BD/SCN{3 array astore/PCol\n"
"exch def}BD/cm{6 array astore concat}BD/m{moveto}BD/l{lineto}BD/c{curveto}BD\n"
"/h{closepath}BD/W{clip}BD/W*{eoclip}BD/n{newpath}BD/q{gsave 10 dict begin}BD\n"
"/Q{end grestore}BD/re{4 2 roll m dup 0 exch RL exch 0 RL 0 exch neg RL h}BD\n"
"/S{gs PCol SC stroke gr n}BD/BT{gsave 10 dict begin/_m matrix CM def BCol\n"
"SC}BD/ET{end grestore}BD/Tf{/_fs ED findfont[_fs 0 0 _fs 0 0]makefont F}BD\n"
"/Tm{6 array astore concat}BD/Td{translate}BD/Tj{0 0 m show}BD/BDC{pop pop}BD\n"
"/EMC{}BD/BSt 0 def/LWi 0 def/WFi false def/BCol[1 1 1]def/PCol[0 0 0]def\n"
"/BDArr[0.94 0.88 0.63 0.50 0.37 0.12 0.06]def/defM matrix def/level3{\n"
"/languagelevel where{pop languagelevel 3 ge}{false}ie}BD/QCIgray D0/QCIcolor\n"
"D0/QCIindex D0/QCI{/colorimage where{pop false 3 colorimage}{exec/QCIcolor\n"
"ED/QCIgray QCIcolor length 3 idiv string def 0 1 QCIcolor length 3 idiv 1\n"
"sub{/QCIindex ED/_x QCIindex 3 mul def QCIgray QCIindex QCIcolor _x get 0.30\n"
"mul QCIcolor _x 1 add get 0.59 mul QCIcolor _x 2 add get 0.11 mul add add\n"
"cvi put}for QCIgray image}ie}BD/di{gs TR 1 i 1 eq{pop pop false 3 1 roll\n"
"BCol SC imagemask}{dup false ne{level3}{false}ie{/_ma ED 8 eq{/_dc[0 1]def\n"
"/DeviceGray}{/_dc[0 1 0 1 0 1]def/DeviceRGB}ie scs/_im ED/_mt ED/_h ED/_w ED\n"
"<</ImageType 3/DataDict <</ImageType 1/Width _w/Height _h/ImageMatrix _mt\n"
"/DataSource _im/BitsPerComponent 8/Decode _dc >>/MaskDict <</ImageType 1\n"
"/Width _w/Height _h/ImageMatrix _mt/DataSource _ma/BitsPerComponent 1/Decode\n"
"[0 1]>>/InterleaveType 3 >> image}{pop 8 4 1 roll 8 eq{image}{QCI}ie}ie}ie\n"
"gr}BD/BF{gs BSt 1 eq{BCol SC WFi{fill}{eofill}ie}if BSt 2 ge BSt 8 le and{\n"
"BDArr BSt 2 sub get/_sc ED BCol{1. exch sub _sc mul 1. exch sub}forall 3\n"
"array astore SC WFi{fill}{eofill}ie}if BSt 9 ge BSt 14 le and{WFi{W}{W*}ie\n"
"pathbbox 3 i 3 i TR 4 2 roll 3 2 roll exch sub/_h ED sub/_w ED BCol SC 0.3 w\n"
"n BSt 9 eq BSt 11 eq or{0 4 _h{dup 0 exch m _w exch l}for}if BSt 10 eq BSt\n"
"11 eq or{0 4 _w{dup 0 m _h l}for}if BSt 12 eq BSt 14 eq or{_w _h gt{0 6 _w\n"
"_h add{dup 0 m _h sub _h l}for}{0 6 _w _h add{dup 0 exch m _w sub _w exch l}\n"
"for}ie}if BSt 13 eq BSt 14 eq or{_w _h gt{0 6 _w _h add{dup _h m _h sub 0 l}\n"
"for}{0 6 _w _h add{dup _w exch m _w sub 0 exch l}for}ie}if S}if BSt 15 eq{}\n"
"if BSt 24 eq{}if gr}BD/f{/WFi true def BF n}BD/f*{/WFi false def BF n}BD/B{\n"
"/WFi true def BF S n}BD/B*{/WFi false def BF S n}BD/MF{true exch true exch{\n"
"exch pop exch pop dup 0 get dup findfont dup/FontName get 3 -1 roll eq{exit}\n"
"if}forall exch dup 1 get/fxscale ED 2 get/fslant ED exch/fencoding ED[\n"
"fxscale 0 fslant 1 0 0]makefont fencoding false eq{}{dup maxlength dict\n"
"begin{1 i/FID ne{def}{pop pop}ifelse}forall/Encoding fencoding def\n"
"currentdict end}ie definefont pop}BD/MFEmb{findfont dup length dict begin{1\n"
"i/FID ne{def}{pop pop}ifelse}forall/Encoding ED currentdict end definefont\n"
"pop}BD/QI{/C save def pageinit q n}BD/QP{Q C restore showpage}BD/SPD{\n"
"/setpagedevice where{<< 3 1 roll >> setpagedevice}{pop pop}ie}BD\n";





#if 0
// ---------------------------------------------------------------------
// postscript font substitution dictionary. We assume every postscript printer has at least
// Helvetica, Times, Courier and Symbol

#if defined (Q_WS_WIN) && defined (Q_CC_MSVC)
#  pragma warning(disable: 4305)
#endif

struct psfont {
    const char *psname;
    qreal slant;
    qreal xscale;
};

static const psfont Arial[] = {
    { "Arial", 0, 84.04 },
    { "Arial-Italic", 0, 84.04 },
    { "Arial-Bold", 0, 88.65 },
    { "Arial-BoldItalic", 0, 88.65 }
};

static const psfont AvantGarde[] = {
    { "AvantGarde-Book", 0, 87.43 },
    { "AvantGarde-BookOblique", 0, 88.09 },
    { "AvantGarde-Demi", 0, 88.09 },
    { "AvantGarde-DemiOblique", 0, 87.43 },
};

static const psfont Bookman [] = {
    { "Bookman-Light", 0, 93.78 },
    { "Bookman-LightItalic", 0, 91.42 },
    { "Bookman-Demi", 0, 99.86 },
    { "Bookman-DemiItalic", 0, 101.54 }
};

static const psfont Charter [] = {
    { "CharterBT-Roman", 0, 84.04 },
    { "CharterBT-Italic", 0.0, 81.92 },
    { "CharterBT-Bold", 0, 88.99 },
    { "CharterBT-BoldItalic", 0.0, 88.20 }
};

static const psfont Courier [] = {
    { "Courier", 0, 100. },
    { "Courier-Oblique", 0, 100. },
    { "Courier-Bold", 0, 100. },
    { "Courier-BoldOblique", 0, 100. }
};

static const psfont Garamond [] = {
    { "Garamond-Antiqua", 0, 78.13 },
    { "Garamond-Kursiv", 0, 78.13 },
    { "Garamond-Halbfett", 0, 78.13 },
    { "Garamond-KursivHalbfett", 0, 78.13 }
};

static const psfont GillSans [] = { // estimated value for xstretch
    { "GillSans", 0, 82 },
    { "GillSans-Italic", 0, 82 },
    { "GillSans-Bold", 0, 82 },
    { "GillSans-BoldItalic", 0, 82 }
};

static const psfont Helvetica [] = {
    { "Helvetica", 0, 84.04 },
    { "Helvetica-Oblique", 0, 84.04 },
    { "Helvetica-Bold", 0, 88.65 },
    { "Helvetica-BoldOblique", 0, 88.65 }
};

static const psfont Letter [] = {
    { "LetterGothic", 0, 83.32 },
    { "LetterGothic-Italic", 0, 83.32 },
    { "LetterGothic-Bold", 0, 83.32 },
    { "LetterGothic-Bold", 0.2, 83.32 }
};

static const psfont LucidaSans [] = {
    { "LucidaSans", 0, 94.36 },
    { "LucidaSans-Oblique", 0, 94.36 },
    { "LucidaSans-Demi", 0, 98.10 },
    { "LucidaSans-DemiOblique", 0, 98.08 }
};

static const psfont LucidaSansTT [] = {
    { "LucidaSans-Typewriter", 0, 100.50 },
    { "LucidaSans-TypewriterOblique", 0, 100.50 },
    { "LucidaSans-TypewriterBold", 0, 100.50 },
    { "LucidaSans-TypewriterBoldOblique", 0, 100.50 }
};

static const psfont LucidaBright [] = {
    { "LucidaBright", 0, 93.45 },
    { "LucidaBright-Italic", 0, 91.98 },
    { "LucidaBright-Demi", 0, 96.22 },
    { "LucidaBright-DemiItalic", 0, 96.98 }
};

static const psfont Palatino [] = {
    { "Palatino-Roman", 0, 82.45 },
    { "Palatino-Italic", 0, 76.56 },
    { "Palatino-Bold", 0, 83.49 },
    { "Palatino-BoldItalic", 0, 81.51 }
};

static const psfont Symbol [] = {
    { "Symbol", 0, 82.56 },
    { "Symbol", 0.2, 82.56 },
    { "Symbol", 0, 82.56 },
    { "Symbol", 0.2, 82.56 }
};

static const psfont Tahoma [] = {
    { "Tahoma", 0, 83.45 },
    { "Tahoma", 0.2, 83.45 },
    { "Tahoma-Bold", 0, 95.59 },
    { "Tahoma-Bold", 0.2, 95.59 }
};

static const psfont Times [] = {
    { "Times-Roman", 0, 82.45 },
    { "Times-Italic", 0, 82.45 },
    { "Times-Bold", 0, 82.45 },
    { "Times-BoldItalic", 0, 82.45 }
};

static const psfont Verdana [] = {
    { "Verdana", 0, 96.06 },
    { "Verdana-Italic", 0, 96.06 },
    { "Verdana-Bold", 0, 107.12 },
    { "Verdana-BoldItalic", 0, 107.10 }
};

static const psfont Utopia [] = {
    { "Utopia-Regular", 0, 84.70 },
    { "Utopia-Regular", 0.2, 84.70 },
    { "Utopia-Bold", 0, 88.01 },
    { "Utopia-Bold", 0.2, 88.01 }
};

static const psfont * const SansSerifReplacements[] = {
    Helvetica, 0
        };
static const psfont * const SerifReplacements[] = {
    Times, 0
        };
static const psfont * const FixedReplacements[] = {
    Courier, 0
        };
static const psfont * const TahomaReplacements[] = {
    Verdana, AvantGarde, Helvetica, 0
        };
static const psfont * const VerdanaReplacements[] = {
    Tahoma, AvantGarde, Helvetica, 0
        };

static const struct {
    const char * input; // spaces are stripped in here, and everything lowercase
    const psfont * ps;
    const psfont *const * replacements;
} postscriptFonts [] = {
    { "arial", Arial, SansSerifReplacements },
    { "arialmt", Arial, SansSerifReplacements },
    { "arialunicodems", Arial, SansSerifReplacements },
    { "avantgarde", AvantGarde, SansSerifReplacements },
    { "bookman", Bookman, SerifReplacements },
    { "charter", Charter, SansSerifReplacements },
    { "bitstreamcharter", Charter, SansSerifReplacements },
    { "bitstreamcyberbit", Times, SerifReplacements },
    { "courier", Courier, 0 },
    { "couriernew", Courier, 0 },
    { "fixed", Courier, 0 },
    { "garamond", Garamond, SerifReplacements },
    { "gillsans", GillSans, SansSerifReplacements },
    { "helvetica", Helvetica, 0 },
    { "letter", Letter, FixedReplacements },
    { "lucida", LucidaSans, SansSerifReplacements },
    { "lucidasans", LucidaSans, SansSerifReplacements },
    { "lucidabright", LucidaBright, SerifReplacements },
    { "lucidasanstypewriter", LucidaSansTT, FixedReplacements },
    { "luciduxsans", LucidaSans, SansSerifReplacements },
    { "luciduxserif", LucidaBright, SerifReplacements },
    { "luciduxmono", LucidaSansTT, FixedReplacements },
    { "palatino", Palatino, SerifReplacements },
    { "symbol", Symbol, 0 },
    { "tahoma", Tahoma, TahomaReplacements },
    { "terminal", Courier, 0 },
    { "times", Times, 0 },
    { "timesnewroman", Times, 0 },
    { "verdana", Verdana, VerdanaReplacements },
    { "utopia", Utopia, SerifReplacements },
    { 0, 0, 0 }
};
#endif

// ------------------------------End of static data ----------------------------------

// make sure DSC comments are not longer than 255 chars per line.
static QByteArray wrapDSC(const QByteArray &str)
{
    QByteArray dsc = str.simplified();
    const int wrapAt = 254;
    QByteArray wrapped;
    if (dsc.length() < wrapAt)
        wrapped = dsc;
    else {
        wrapped = dsc.left(wrapAt);
        QByteArray tmp = dsc.mid(wrapAt);
        while (tmp.length() > wrapAt-3) {
            wrapped += "\n%%+" + tmp.left(wrapAt-3);
            tmp = tmp.mid(wrapAt-3);
        }
        wrapped += "\n%%+" + tmp;
    }
    return wrapped + "\n";
}

// ----------------------------- Internal class declarations -----------------------------

QPSPrintEnginePrivate::QPSPrintEnginePrivate(QPrinter::PrinterMode m)
    : outDevice(0), fd(-1), 
      collate(false), copies(1), orientation(QPrinter::Portrait),
      pageSize(QPrinter::A4), pageOrder(QPrinter::FirstPageFirst), colorMode(QPrinter::Color),
      fullPage(false), printerState(QPrinter::Idle), pid(0)
{
    postscript = true;
    backgroundMode = Qt::TransparentMode;

    firstPage = true;
    resolution = 72;
    if (m == QPrinter::HighResolution)
        resolution = 1200;
    else if (m == QPrinter::ScreenResolution)
        resolution = qt_defaultDpi();

#ifndef QT_NO_SETTINGS
    QSettings settings(QSettings::UserScope, QLatin1String("Trolltech"));
    settings.beginGroup(QLatin1String("Qt"));
    embedFonts = settings.value(QLatin1String("embedFonts"), true).toBool();
#else
    embedFonts = true;
#endif
}

QPSPrintEnginePrivate::~QPSPrintEnginePrivate()
{
}

static void ps_r7(QPdf::ByteStream& stream, const char * s, int l)
{
    int i = 0;
    uchar line[80];
    int col = 0;

    while(i < l) {
        line[col++] = s[i++];
        if (i < l - 1 && col >= 76) {
            line[col++] = '\n';
            line[col++] = '\0';
            stream << (const char *)line;
            col = 0;
        }
    }
    if (col > 0) {
        while((col&3) != 0)
            line[col++] = '%'; // use a comment as padding
        line[col++] = '\n';
        line[col++] = '\0';
        stream << (const char *)line;
    }
}

static QByteArray runlengthEncode(const QByteArray &input)
{
    if (!input.length())
        return input;

    const char *data = input.constData();

    QByteArray out;
    int start = 0;
    char last = *data;

    enum State {
        Undef,
        Equal,
        Diff
    };
    State state = Undef;

    int i = 1;
    int written = 0;
    while (1) {
        bool flush = (i == input.size());
        if (!flush) {
            switch(state) {
            case Undef:
                state = (last == data[i]) ? Equal : Diff;
                break;
            case Equal:
                if (data[i] != last)
                    flush = true;
                break;
            case Diff:
                if (data[i] == last) {
                    --i;
                    flush = true;
                }
            }
        }
        if (flush || i - start == 128) {
            int size = i - start;
            if (state == Equal) {
                out.append((char)(uchar)(257-size));
                out.append(last);
                written += size;
            } else {
                out.append((char)(uchar)size-1);
                while (start < i)
                    out.append(data[start++]);