mirror of
https://invent.kde.org/graphics/okular
synced 2024-11-05 18:34:53 +00:00
701 lines
27 KiB
C++
701 lines
27 KiB
C++
// -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil; c-brace-offset: 0; -*-
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// special.cpp
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// Methods for dviRenderer which deal with "\special" commands found in the
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// DVI file
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// Copyright 2000--2004, Stefan Kebekus (kebekus@kde.org).
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#include <config.h>
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#include "dviFile.h"
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#include "dviRenderer.h"
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#include "hyperlink.h"
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#include "kvs_debug.h"
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#include "psgs.h"
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//#include "renderedDocumentPage.h"
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#include <klocale.h>
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#include <kmimetype.h>
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#include <QFile>
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#include <QImage>
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#include <QPainter>
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#include <QStringList>
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//#define DEBUG_SPECIAL
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extern QPainter *foreGroundPainter;
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void dviRenderer::printErrorMsgForSpecials(const QString& msg)
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{
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if (dviFile->errorCounter < 25) {
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kError(kvs::dvi) << msg << endl;
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dviFile->errorCounter++;
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if (dviFile->errorCounter == 25)
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kError(kvs::dvi) << i18n("That makes 25 errors. Further error messages will not be printed.") << endl;
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}
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}
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// Parses a color specification, as explained in the manual to
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// dvips. If the spec could not be parsed, an invalid color will be
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// returned.
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QColor dviRenderer::parseColorSpecification(const QString& colorSpec)
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{
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// Initialize the map of known colors, if that is not done yet.
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if (namedColors.isEmpty()) {
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namedColors["Red"] = QColor( (int)(255.0*1), (int)(255.0*0), (int)(255.0*0));
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namedColors["Tan"] = QColor( (int)(255.0*0.86), (int)(255.0*0.58), (int)(255.0*0.44));
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namedColors["Blue"] = QColor( (int)(255.0*0), (int)(255.0*0), (int)(255.0*1));
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namedColors["Cyan"] = QColor( (int)(255.0*0), (int)(255.0*1), (int)(255.0*1));
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namedColors["Gray"] = QColor( (int)(255.0*0.5), (int)(255.0*0.5), (int)(255.0*0.5));
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namedColors["Plum"] = QColor( (int)(255.0*0.5), (int)(255.0*0), (int)(255.0*1));
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namedColors["Black"] = QColor( (int)(255.0*0), (int)(255.0*0), (int)(255.0*0));
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namedColors["Brown"] = QColor( (int)(255.0*0.4), (int)(255.0*0), (int)(255.0*0));
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namedColors["Green"] = QColor( (int)(255.0*0), (int)(255.0*1), (int)(255.0*0));
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namedColors["Melon"] = QColor( (int)(255.0*1), (int)(255.0*0.54), (int)(255.0*0.5));
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namedColors["Peach"] = QColor( (int)(255.0*1), (int)(255.0*0.5), (int)(255.0*0.3));
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namedColors["Sepia"] = QColor( (int)(255.0*0.3), (int)(255.0*0), (int)(255.0*0));
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namedColors["White"] = QColor( (int)(255.0*1), (int)(255.0*1), (int)(255.0*1));
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namedColors["Maroon"] = QColor( (int)(255.0*0.68), (int)(255.0*0), (int)(255.0*0));
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namedColors["Orange"] = QColor( (int)(255.0*1), (int)(255.0*0.39), (int)(255.0*0.13));
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namedColors["Orchid"] = QColor( (int)(255.0*0.68), (int)(255.0*0.36), (int)(255.0*1));
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namedColors["Purple"] = QColor( (int)(255.0*0.55), (int)(255.0*0.14), (int)(255.0*1));
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namedColors["Salmon"] = QColor( (int)(255.0*1), (int)(255.0*0.47), (int)(255.0*0.62));
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namedColors["Violet"] = QColor( (int)(255.0*0.21), (int)(255.0*0.12), (int)(255.0*1));
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namedColors["Yellow"] = QColor( (int)(255.0*1), (int)(255.0*1), (int)(255.0*0));
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namedColors["Apricot"] = QColor( (int)(255.0*1), (int)(255.0*0.68), (int)(255.0*0.48));
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namedColors["Emerald"] = QColor( (int)(255.0*0), (int)(255.0*1), (int)(255.0*0.5));
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namedColors["Fuchsia"] = QColor( (int)(255.0*0.45), (int)(255.0*0.01), (int)(255.0*0.92));
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namedColors["Magenta"] = QColor( (int)(255.0*1), (int)(255.0*0), (int)(255.0*1));
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namedColors["SkyBlue"] = QColor( (int)(255.0*0.38), (int)(255.0*1), (int)(255.0*0.88));
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namedColors["Thistle"] = QColor( (int)(255.0*0.88), (int)(255.0*0.41), (int)(255.0*1));
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namedColors["BrickRed"] = QColor( (int)(255.0*0.72), (int)(255.0*0), (int)(255.0*0));
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namedColors["Cerulean"] = QColor( (int)(255.0*0.06), (int)(255.0*0.89), (int)(255.0*1));
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namedColors["Lavender"] = QColor( (int)(255.0*1), (int)(255.0*0.52), (int)(255.0*1));
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namedColors["Mahogany"] = QColor( (int)(255.0*0.65), (int)(255.0*0), (int)(255.0*0));
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namedColors["Mulberry"] = QColor( (int)(255.0*0.64), (int)(255.0*0.08), (int)(255.0*0.98));
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namedColors["NavyBlue"] = QColor( (int)(255.0*0.06), (int)(255.0*0.46), (int)(255.0*1));
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namedColors["SeaGreen"] = QColor( (int)(255.0*0.31), (int)(255.0*1), (int)(255.0*0.5));
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namedColors["TealBlue"] = QColor( (int)(255.0*0.12), (int)(255.0*0.98), (int)(255.0*0.64));
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namedColors["BlueGreen"] = QColor( (int)(255.0*0.15), (int)(255.0*1), (int)(255.0*0.67));
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namedColors["CadetBlue"] = QColor( (int)(255.0*0.38), (int)(255.0*0.43), (int)(255.0*0.77));
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namedColors["Dandelion"] = QColor( (int)(255.0*1), (int)(255.0*0.71), (int)(255.0*0.16));
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namedColors["Goldenrod"] = QColor( (int)(255.0*1), (int)(255.0*0.9), (int)(255.0*0.16));
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namedColors["LimeGreen"] = QColor( (int)(255.0*0.5), (int)(255.0*1), (int)(255.0*0));
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namedColors["OrangeRed"] = QColor( (int)(255.0*1), (int)(255.0*0), (int)(255.0*0.5));
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namedColors["PineGreen"] = QColor( (int)(255.0*0), (int)(255.0*0.75), (int)(255.0*0.16));
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namedColors["RawSienna"] = QColor( (int)(255.0*0.55), (int)(255.0*0), (int)(255.0*0));
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namedColors["RedOrange"] = QColor( (int)(255.0*1), (int)(255.0*0.23), (int)(255.0*0.13));
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namedColors["RedViolet"] = QColor( (int)(255.0*0.59), (int)(255.0*0), (int)(255.0*0.66));
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namedColors["Rhodamine"] = QColor( (int)(255.0*1), (int)(255.0*0.18), (int)(255.0*1));
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namedColors["RoyalBlue"] = QColor( (int)(255.0*0), (int)(255.0*0.5), (int)(255.0*1));
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namedColors["RubineRed"] = QColor( (int)(255.0*1), (int)(255.0*0), (int)(255.0*0.87));
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namedColors["Turquoise"] = QColor( (int)(255.0*0.15), (int)(255.0*1), (int)(255.0*0.8));
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namedColors["VioletRed"] = QColor( (int)(255.0*1), (int)(255.0*0.19), (int)(255.0*1));
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namedColors["Aquamarine"] = QColor( (int)(255.0*0.18), (int)(255.0*1), (int)(255.0*0.7));
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namedColors["BlueViolet"] = QColor( (int)(255.0*0.1), (int)(255.0*0.05), (int)(255.0*0.96));
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namedColors["DarkOrchid"] = QColor( (int)(255.0*0.6), (int)(255.0*0.2), (int)(255.0*0.8));
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namedColors["OliveGreen"] = QColor( (int)(255.0*0), (int)(255.0*0.6), (int)(255.0*0));
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namedColors["Periwinkle"] = QColor( (int)(255.0*0.43), (int)(255.0*0.45), (int)(255.0*1));
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namedColors["Bittersweet"] = QColor( (int)(255.0*0.76), (int)(255.0*0.01), (int)(255.0*0));
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namedColors["BurntOrange"] = QColor( (int)(255.0*1), (int)(255.0*0.49), (int)(255.0*0));
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namedColors["ForestGreen"] = QColor( (int)(255.0*0), (int)(255.0*0.88), (int)(255.0*0));
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namedColors["GreenYellow"] = QColor( (int)(255.0*0.85), (int)(255.0*1), (int)(255.0*0.31));
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namedColors["JungleGreen"] = QColor( (int)(255.0*0.01), (int)(255.0*1), (int)(255.0*0.48));
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namedColors["ProcessBlue"] = QColor( (int)(255.0*0.04), (int)(255.0*1), (int)(255.0*1));
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namedColors["RoyalPurple"] = QColor( (int)(255.0*0.25), (int)(255.0*0.1), (int)(255.0*1));
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namedColors["SpringGreen"] = QColor( (int)(255.0*0.74), (int)(255.0*1), (int)(255.0*0.24));
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namedColors["YellowGreen"] = QColor( (int)(255.0*0.56), (int)(255.0*1), (int)(255.0*0.26));
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namedColors["MidnightBlue"] = QColor( (int)(255.0*0), (int)(255.0*0.44), (int)(255.0*0.57));
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namedColors["YellowOrange"] = QColor( (int)(255.0*1), (int)(255.0*0.58), (int)(255.0*0));
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namedColors["CarnationPink"] = QColor( (int)(255.0*1), (int)(255.0*0.37), (int)(255.0*1));
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namedColors["CornflowerBlue"] = QColor( (int)(255.0*0.35), (int)(255.0*0.87), (int)(255.0*1));
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namedColors["WildStrawberry"] = QColor( (int)(255.0*1), (int)(255.0*0.04), (int)(255.0*0.61));
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}
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QString specType = colorSpec.section(' ', 0, 0);
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if (specType.indexOf("rgb", 0, Qt::CaseInsensitive) == 0) {
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bool ok;
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double r = colorSpec.section(' ', 1, 1).toDouble(&ok);
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if ((ok == false) || (r < 0.0) || (r > 1.0))
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return QColor();
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double g = colorSpec.section(' ', 2, 2).toDouble(&ok);
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if ((ok == false) || (g < 0.0) || (g > 1.0))
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return QColor();
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double b = colorSpec.section(' ', 3, 3).toDouble(&ok);
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if ((ok == false) || (b < 0.0) || (b > 1.0))
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return QColor();
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return QColor((int)(r*255.0+0.5), (int)(g*255.0+0.5), (int)(b*255.0+0.5));
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}
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if (specType.indexOf("hsb", 0, Qt::CaseInsensitive) == 0) {
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bool ok;
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double h = colorSpec.section(' ', 1, 1).toDouble(&ok);
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if ((ok == false) || (h < 0.0) || (h > 1.0))
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return QColor();
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double s = colorSpec.section(' ', 2, 2).toDouble(&ok);
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if ((ok == false) || (s < 0.0) || (s > 1.0))
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return QColor();
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double b = colorSpec.section(' ', 3, 3).toDouble(&ok);
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if ((ok == false) || (b < 0.0) || (b > 1.0))
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return QColor();
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return QColor::fromHsv((int)(h*359.0+0.5), (int)(s*255.0+0.5), (int)(b*255.0+0.5));
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}
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if (specType.indexOf("cmyk", 0, Qt::CaseInsensitive) == 0) {
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bool ok;
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double c = colorSpec.section(' ', 1, 1).toDouble(&ok);
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if ((ok == false) || (c < 0.0) || (c > 1.0))
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return QColor();
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double m = colorSpec.section(' ', 2, 2).toDouble(&ok);
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if ((ok == false) || (m < 0.0) || (m > 1.0))
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return QColor();
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double y = colorSpec.section(' ', 3, 3).toDouble(&ok);
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if ((ok == false) || (y < 0.0) || (y > 1.0))
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return QColor();
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double k = colorSpec.section(' ', 3, 3).toDouble(&ok);
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if ((ok == false) || (k < 0.0) || (k > 1.0))
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return QColor();
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// Convert cmyk coordinates to rgb.
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double r = 1.0 - c - k;
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if (r < 0.0)
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r = 0.0;
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double g = 1.0 - m - k;
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if (g < 0.0)
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g = 0.0;
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double b = 1.0 - y - k;
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if (b < 0.0)
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b = 0.0;
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return QColor((int)(r*255.0+0.5), (int)(g*255.0+0.5), (int)(b*255.0+0.5));
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}
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if (specType.indexOf("gray", 0, Qt::CaseInsensitive) == 0) {
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bool ok;
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double g = colorSpec.section(' ', 1, 1).toDouble(&ok);
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if ((ok == false) || (g < 0.0) || (g > 1.0))
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return QColor();
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return QColor((int)(g*255.0+0.5), (int)(g*255.0+0.5), (int)(g*255.0+0.5));
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}
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// Check if the color is one of the known named colors.
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QMap<QString, QColor>::Iterator f = namedColors.find(specType);
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if (f != namedColors.end())
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return *f;
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return QColor(specType);
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}
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void dviRenderer::color_special(const QString& _cp)
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{
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QString const cp = _cp.trimmed();
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QString command = cp.section(' ', 0, 0);
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if (command == "pop") {
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// Take color off the stack
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if (colorStack.isEmpty())
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printErrorMsgForSpecials( i18n("Error in DVIfile '%1', page %2. Color pop command issued when the color stack is empty." ,
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dviFile->filename, current_page));
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else
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colorStack.pop();
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return;
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}
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if (command == "push") {
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// Get color specification
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const QColor col = parseColorSpecification(cp.section(' ', 1));
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// Set color
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if (col.isValid())
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colorStack.push(col);
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else
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colorStack.push(Qt::black);
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return;
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}
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// Get color specification and set the color for the rest of this
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// page
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QColor col = parseColorSpecification(cp);
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// Set color
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if (col.isValid())
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globalColor = col;
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else
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globalColor = Qt::black;
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return;
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}
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void dviRenderer::html_href_special(const QString& _cp)
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{
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QString cp = _cp;
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cp.truncate(cp.indexOf('"'));
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#ifdef DEBUG_SPECIAL
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kDebug(kvs::dvi) << "HTML-special, href " << cp.toLatin1() << endl;
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#endif
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HTML_href = new QString(cp);
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}
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void dviRenderer::html_anchor_end()
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{
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#ifdef DEBUG_SPECIAL
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kDebug(kvs::dvi) << "HTML-special, anchor-end" << endl;
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#endif
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if (HTML_href != NULL) {
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delete HTML_href;
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HTML_href = NULL;
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}
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}
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void dviRenderer::source_special(const QString& cp)
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{
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// only when rendering really takes place: set source_href to the
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// current special string. When characters are rendered, the
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// rendering routine will then generate a DVI_HyperLink and add it
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// to the proper list. This DVI_HyperLink is used to match mouse
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// positions with the hyperlinks for inverse search.
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if (source_href)
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*source_href = cp;
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else
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source_href = new QString(cp);
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}
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void parse_special_argument(const QString& strg, const char* argument_name, int* variable)
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{
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int index = strg.indexOf(argument_name);
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if (index >= 0) {
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QString tmp = strg.mid(index + strlen(argument_name));
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index = tmp.indexOf(' ');
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if (index >= 0)
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tmp.truncate(index);
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bool OK;
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float const tmp_float = tmp.toFloat(&OK);
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if (OK)
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*variable = int(tmp_float+0.5);
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else
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// Maybe we should open a dialog here.
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kError(kvs::dvi) << i18n("Malformed parameter in the epsf special command.\n"
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"Expected a float to follow %1 in %2",
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argument_name, strg) << endl;
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}
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}
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void dviRenderer::epsf_special(const QString& cp)
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{
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#ifdef DEBUG_SPECIAL
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kDebug(kvs::dvi) << "epsf-special: psfile=" << cp <<endl;
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#endif
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QString include_command = cp.simplified();
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// The line is supposed to start with "..ile=", and then comes the
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// filename. Figure out what the filename is and stow it away. Of
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// course, this does not work if the filename contains spaces
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// (already the simplified() above is wrong). If you have
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// files like this, go away.
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QString EPSfilename_orig = include_command;
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EPSfilename_orig.truncate(EPSfilename_orig.indexOf(' '));
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// Strip enclosing quotation marks which are included by some LaTeX
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// macro packages (but not by others). This probably means that
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// graphic files are no longer found if the filename really does
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// contain quotes, but we don't really care that much.
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if ((EPSfilename_orig.at(0) == '\"') && (EPSfilename_orig.at(EPSfilename_orig.length()-1) == '\"')) {
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EPSfilename_orig = EPSfilename_orig.mid(1,EPSfilename_orig.length()-2);
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}
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QString EPSfilename = ghostscript_interface::locateEPSfile(EPSfilename_orig, baseURL);
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// Now parse the arguments.
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int llx = 0;
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int lly = 0;
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int urx = 0;
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int ury = 0;
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int rwi = 0;
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int rhi = 0;
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int angle = 0;
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// just to avoid ambiguities; the filename could contain keywords
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include_command = include_command.mid(include_command.indexOf(' '));
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parse_special_argument(include_command, "llx=", &llx);
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parse_special_argument(include_command, "lly=", &lly);
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parse_special_argument(include_command, "urx=", &urx);
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parse_special_argument(include_command, "ury=", &ury);
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parse_special_argument(include_command, "rwi=", &rwi);
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parse_special_argument(include_command, "rhi=", &rhi);
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parse_special_argument(include_command, "angle=", &angle);
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// If we have a png, gif, jpeg or mng file, we need to draw it here.
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KMimeType::Ptr const mime_type = KMimeType::findByFileContent(EPSfilename);
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QString const & mime_type_name = mime_type?mime_type->name():"";
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bool const isGFX = (mime_type_name == "image/png" ||
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mime_type_name == "image/gif" ||
|
|
mime_type_name == "image/jpeg" ||
|
|
mime_type_name == "video/x-mng");
|
|
|
|
// So, if we do not have a PostScript file, but a graphics file, and
|
|
// if that file exists, we draw it here.
|
|
if (isGFX && QFile::exists(EPSfilename)) {
|
|
// Don't show PostScript, just draw the bounding box. For this,
|
|
// calculate the size of the bounding box in Pixels.
|
|
double bbox_width = urx - llx;
|
|
double bbox_height = ury - lly;
|
|
|
|
if ((rwi != 0)&&(bbox_width != 0)) {
|
|
bbox_height *= rwi/bbox_width;
|
|
bbox_width = rwi;
|
|
}
|
|
if ((rhi != 0)&&(bbox_height != 0)) {
|
|
bbox_width *= rhi/bbox_height;
|
|
bbox_height = rhi;
|
|
}
|
|
|
|
double fontPixelPerDVIunit = dviFile->getCmPerDVIunit() * 1200.0/2.54;
|
|
|
|
bbox_width *= 0.1 * 65536.0*fontPixelPerDVIunit / shrinkfactor;
|
|
bbox_height *= 0.1 * 65536.0*fontPixelPerDVIunit / shrinkfactor;
|
|
|
|
QImage image(EPSfilename);
|
|
image = image.scaled((int)(bbox_width), (int)(bbox_height), Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
|
|
foreGroundPainter->drawImage( ((int) ((currinf.data.dvi_h) / (shrinkfactor * 65536))), currinf.data.pxl_v - (int)bbox_height, image);
|
|
return;
|
|
}
|
|
|
|
if (!_postscript || !QFile::exists(EPSfilename)) {
|
|
// Don't show PostScript, just draw the bounding box. For this,
|
|
// calculate the size of the bounding box in Pixels.
|
|
double bbox_width = urx - llx;
|
|
double bbox_height = ury - lly;
|
|
|
|
if ((rwi != 0)&&(bbox_width != 0)) {
|
|
bbox_height *= rwi/bbox_width;
|
|
bbox_width = rwi;
|
|
}
|
|
if ((rhi != 0)&&(bbox_height != 0)) {
|
|
bbox_width *= rhi/bbox_height;
|
|
bbox_height = rhi;
|
|
}
|
|
|
|
double fontPixelPerDVIunit = dviFile->getCmPerDVIunit() * 1200.0/2.54;
|
|
|
|
bbox_width *= 0.1 * 65536.0*fontPixelPerDVIunit / shrinkfactor;
|
|
bbox_height *= 0.1 * 65536.0*fontPixelPerDVIunit / shrinkfactor;
|
|
|
|
QRect bbox(((int) ((currinf.data.dvi_h) / (shrinkfactor * 65536))), currinf.data.pxl_v - (int)bbox_height,
|
|
(int)bbox_width, (int)bbox_height);
|
|
|
|
foreGroundPainter->save();
|
|
|
|
if (QFile::exists(EPSfilename))
|
|
foreGroundPainter->setBrush(Qt::lightGray);
|
|
else
|
|
foreGroundPainter->setBrush(Qt::red);
|
|
foreGroundPainter->setPen(Qt::black);
|
|
foreGroundPainter->drawRoundRect(bbox, 2, 2);
|
|
QFont f = foreGroundPainter->font();
|
|
f.setPointSize(8);
|
|
foreGroundPainter->setFont(f);
|
|
if (QFile::exists(EPSfilename))
|
|
foreGroundPainter->drawText (bbox, (int)(Qt::AlignCenter), EPSfilename);
|
|
else
|
|
foreGroundPainter->drawText (bbox, (int)(Qt::AlignCenter),
|
|
i18n("File not found: \n %1", EPSfilename_orig));
|
|
foreGroundPainter->restore();
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
void dviRenderer::TPIC_flushPath_special()
|
|
{
|
|
#ifdef DEBUG_SPECIAL
|
|
kDebug(kvs::dvi) << "TPIC special flushPath" << endl;
|
|
#endif
|
|
|
|
if (number_of_elements_in_path == 0) {
|
|
printErrorMsgForSpecials("TPIC special flushPath called when path was empty.");
|
|
return;
|
|
}
|
|
|
|
QPen pen(Qt::black, (int)(penWidth_in_mInch*resolutionInDPI/1000.0 + 0.5)); // Sets the pen size in milli-inches
|
|
foreGroundPainter->setPen(pen);
|
|
foreGroundPainter->drawPolyline(TPIC_path.constData(), number_of_elements_in_path);
|
|
number_of_elements_in_path = 0;
|
|
}
|
|
|
|
|
|
void dviRenderer::TPIC_addPath_special(const QString& cp)
|
|
{
|
|
#ifdef DEBUG_SPECIAL
|
|
kDebug(kvs::dvi) << "TPIC special addPath: " << cp << endl;
|
|
#endif
|
|
|
|
// Adds a point to the path list
|
|
QString cp_noWhiteSpace = cp.trimmed();
|
|
bool ok;
|
|
float xKoord = cp_noWhiteSpace.section(' ', 0, 0).toFloat(&ok);
|
|
if (ok == false) {
|
|
printErrorMsgForSpecials( QString("TPIC special; cannot parse first argument in 'pn %1'.").arg(cp) );
|
|
return;
|
|
}
|
|
float yKoord = cp_noWhiteSpace.section(' ', 1, 1).toFloat(&ok);
|
|
if (ok == false) {
|
|
printErrorMsgForSpecials( QString("TPIC special; cannot parse second argument in 'pn %1'.").arg(cp) );
|
|
return;
|
|
}
|
|
|
|
float mag = dviFile->getMagnification()/1000.0;
|
|
|
|
int x = (int)( currinf.data.dvi_h/(shrinkfactor*65536.0) + mag*xKoord*resolutionInDPI/1000.0 + 0.5 );
|
|
int y = (int)( currinf.data.pxl_v + mag*yKoord*resolutionInDPI/1000.0 + 0.5 );
|
|
|
|
// Initialize the point array used to store the path
|
|
if (TPIC_path.size() == 0)
|
|
number_of_elements_in_path = 0;
|
|
if (TPIC_path.size() == number_of_elements_in_path)
|
|
TPIC_path.resize(number_of_elements_in_path+100);
|
|
TPIC_path.setPoint(number_of_elements_in_path++, x, y);
|
|
}
|
|
|
|
|
|
void dviRenderer::TPIC_setPen_special(const QString& cp)
|
|
{
|
|
#ifdef DEBUG_SPECIAL
|
|
kDebug(kvs::dvi) << "TPIC special setPen: " << cp << endl;
|
|
#endif
|
|
|
|
// Sets the pen size in milli-inches
|
|
bool ok;
|
|
penWidth_in_mInch = cp.trimmed().toFloat(&ok);
|
|
if (ok == false) {
|
|
printErrorMsgForSpecials( QString("TPIC special; cannot parse argument in 'pn %1'.").arg(cp) );
|
|
penWidth_in_mInch = 0.0;
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
void dviRenderer::applicationDoSpecial(char *cp)
|
|
{
|
|
QString special_command(cp);
|
|
|
|
// First come specials which is only interpreted during rendering,
|
|
// and NOT during the prescan phase
|
|
|
|
// font color specials
|
|
if (strncasecmp(cp, "color", 5) == 0) {
|
|
color_special(special_command.mid(5));
|
|
return;
|
|
}
|
|
|
|
// HTML reference
|
|
if (strncasecmp(cp, "html:<A href=", 13) == 0) {
|
|
html_href_special(special_command.mid(14));
|
|
return;
|
|
}
|
|
|
|
// HTML anchor end
|
|
if (strncasecmp(cp, "html:</A>", 9) == 0) {
|
|
html_anchor_end();
|
|
return;
|
|
}
|
|
|
|
// TPIC specials
|
|
if (strncasecmp(cp, "pn", 2) == 0) {
|
|
TPIC_setPen_special(special_command.mid(2));
|
|
return;
|
|
}
|
|
if (strncasecmp(cp, "pa ", 3) == 0) {
|
|
TPIC_addPath_special(special_command.mid(3));
|
|
return;
|
|
}
|
|
if (strncasecmp(cp, "fp", 2) == 0) {
|
|
TPIC_flushPath_special();
|
|
return;
|
|
}
|
|
|
|
// Encapsulated Postscript File
|
|
if (strncasecmp(cp, "PSfile=", 7) == 0) {
|
|
epsf_special(special_command.mid(7));
|
|
return;
|
|
}
|
|
|
|
// source special
|
|
if (strncasecmp(cp, "src:", 4) == 0) {
|
|
source_special(special_command.mid(4));
|
|
return;
|
|
}
|
|
|
|
// Unfortunately, in some TeX distribution the hyperref package uses
|
|
// the dvips driver by default, rather than the hypertex driver. As
|
|
// a result, the DVI files produced are full of PostScript that
|
|
// specifies links and anchors, and KDVI would call the ghostscript
|
|
// interpreter for every page which makes it really slow. This is a
|
|
// major nuisance, so that we try to filter and interpret the
|
|
// hypertex generated PostScript here.
|
|
if (special_command.startsWith("ps:SDict begin")) {
|
|
|
|
// Hyperref: start of hyperref rectangle. At this stage it is not
|
|
// yet clear if the rectangle will conain a hyperlink, an anchor,
|
|
// or another type of object. We suspect that this rectangle will
|
|
// define a hyperlink, allocate a QString and set HTML_href to
|
|
// point to this string. The string contains the name of the
|
|
// destination which ---due to the nature of the PostScript
|
|
// language--- will be defined only after characters are drawn and
|
|
// the hyperref rectangle has been closed. We use "glopglyph" as a
|
|
// temporary name. Since the pointer HTML_href is not NULL, the
|
|
// chracter drawing routines will now underline all characters in
|
|
// blue to point out that they correspond to a hyperlink. Also, as
|
|
// soon as characters are drawn, the drawing routines will
|
|
// allocate a Hyperlink and add it to the top of the vector
|
|
// currentlyDrawnPage->hyperLinkList.
|
|
if (special_command == "ps:SDict begin H.S end") {
|
|
// At this stage, the vector 'hyperLinkList' should not contain
|
|
// links with unspecified destinations (i.e. destination set to
|
|
// 'glopglyph'). As a protection against bad DVI files, we make
|
|
// sure to remove all link rectangles which point to
|
|
// 'glopglyph'.
|
|
while (!currentlyDrawnPage->hyperLinkList.isEmpty())
|
|
if (currentlyDrawnPage->hyperLinkList.last().linkText == "glopglyph")
|
|
currentlyDrawnPage->hyperLinkList.pop_back();
|
|
else
|
|
break;
|
|
|
|
HTML_href = new QString("glopglyph");
|
|
return;
|
|
}
|
|
|
|
// Hyperref: end of hyperref rectangle of unknown type or hyperref
|
|
// link rectangle. In these cases we set HTML_href to NULL, which
|
|
// causes the character drawing routines to stop drawing
|
|
// characters underlined in blue. Note that the name of the
|
|
// destination is still set to "glopglyph". In a well-formed DVI
|
|
// file, this special command is immediately followed by another
|
|
// special, where the destination is specified. This special is
|
|
// treated below.
|
|
if ((special_command == "ps:SDict begin H.R end") || special_command.endsWith("H.L end")) {
|
|
if (HTML_href != NULL) {
|
|
delete HTML_href;
|
|
HTML_href = NULL;
|
|
}
|
|
return; // end of hyperref rectangle
|
|
}
|
|
|
|
// Hyperref: end of anchor rectangle. If this special is
|
|
// encountered, the rectangle, which was started with "ps:SDict
|
|
// begin H.S end" does not contain a link, but an anchor for a
|
|
// link. Anchors, however, have already been dealt with in the
|
|
// prescan phase and will not be considered here. Thus, we set
|
|
// HTML_href to NULL so that character drawing routines will no
|
|
// longer underline hyperlinks in blue, and remove the link from
|
|
// the hyperLinkList. NOTE: in a well-formed DVI file, the "H.A"
|
|
// special comes directly after the "H.S" special. A
|
|
// hyperlink-anchor rectangle therefore never contains characters,
|
|
// so no character will by accidentally underlined in blue.
|
|
if (special_command.endsWith("H.A end")) {
|
|
if (HTML_href != NULL) {
|
|
delete HTML_href;
|
|
HTML_href = NULL;
|
|
}
|
|
while (!currentlyDrawnPage->hyperLinkList.isEmpty())
|
|
if (currentlyDrawnPage->hyperLinkList.last().linkText == "glopglyph")
|
|
currentlyDrawnPage->hyperLinkList.pop_back();
|
|
else
|
|
break;
|
|
return; // end of hyperref anchor
|
|
}
|
|
|
|
// Hyperref: specification of a hyperref link rectangle's
|
|
// destination. As mentioned above, the destination of a hyperlink
|
|
// is specified only AFTER the rectangle has been specified. We
|
|
// will therefore go through the list of rectangles stored in
|
|
// currentlyDrawnPage->hyperLinkList, find those whose destination
|
|
// is open and fill in the value found here. NOTE: the character
|
|
// drawing routines sometimes split a single hyperlink rectangle
|
|
// into several rectangles (e.g. if the font changes, or when a
|
|
// line break is encountered)
|
|
if (special_command.startsWith("ps:SDict begin [") && special_command.endsWith(" pdfmark end")) {
|
|
if (!currentlyDrawnPage->hyperLinkList.isEmpty()) {
|
|
QString targetName = special_command.section('(', 1, 1).section(')', 0, 0);
|
|
QVector<Hyperlink>::iterator it;
|
|
for( it = currentlyDrawnPage->hyperLinkList.begin(); it != currentlyDrawnPage->hyperLinkList.end(); ++it )
|
|
if (it->linkText == "glopglyph")
|
|
it->linkText = targetName;
|
|
}
|
|
return; // hyperref definition of link/anchor/bookmark/etc
|
|
}
|
|
}
|
|
|
|
// Detect text rotation specials that are included by the graphicx
|
|
// package. If one of these specials is found, the state of the
|
|
// painter is saved, and the coordinate system is rotated
|
|
// accordingly
|
|
if (special_command.startsWith("ps: gsave currentpoint currentpoint translate ") &&
|
|
special_command.endsWith(" neg rotate neg exch neg exch translate") ) {
|
|
bool ok;
|
|
double angle = special_command.section(' ', 5, 5).toDouble(&ok);
|
|
if (ok == true) {
|
|
int x = ((int) ((currinf.data.dvi_h) / (shrinkfactor * 65536)));
|
|
int y = currinf.data.pxl_v;
|
|
|
|
foreGroundPainter->save();
|
|
// Rotate about the current point
|
|
foreGroundPainter->translate(x,y);
|
|
foreGroundPainter->rotate(-angle);
|
|
foreGroundPainter->translate(-x,-y);
|
|
} else
|
|
printErrorMsgForSpecials( i18n("Error in DVIfile '%1', page %2. Could not interpret angle in text rotation special." ,
|
|
dviFile->filename, current_page));
|
|
}
|
|
|
|
// The graphicx package marks the end of rotated text with this
|
|
// special. The state of the painter is restored.
|
|
if (special_command == "ps: currentpoint grestore moveto") {
|
|
foreGroundPainter->restore();
|
|
}
|
|
|
|
// The following special commands are not used here; they are of
|
|
// interest only during the prescan phase. We recognize them here
|
|
// anyway, to make sure that KDVI doesn't complain about
|
|
// unrecognized special commands.
|
|
if ((cp[0] == '!') ||
|
|
(cp[0] == '"') ||
|
|
(strncasecmp(cp, "html:<A name=", 13) == 0) ||
|
|
(strncasecmp(cp, "ps:", 3) == 0) ||
|
|
(strncasecmp(cp, "papersize", 9) == 0) ||
|
|
(strncasecmp(cp, "header", 6) == 0) ||
|
|
(strncasecmp(cp, "background", 10) == 0) )
|
|
return;
|
|
|
|
printErrorMsgForSpecials(i18n("The special command '%1' is not implemented.", special_command));
|
|
return;
|
|
}
|