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-rw-r--r--kdvi/dviRenderer_prescan.cpp789
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diff --git a/kdvi/dviRenderer_prescan.cpp b/kdvi/dviRenderer_prescan.cpp
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+// dviRenderer_prescan.cpp
+//
+// Part of KDVI - A DVI previewer for the KDE desktop environemt
+//
+// (C) 2003--2004 Stefan Kebekus
+// Distributed under the GPL
+
+#include <config.h>
+
+#include "dviRenderer.h"
+#include "dvi.h"
+#include "dviFile.h"
+#include "fontpool.h"
+#include "kdvi_multipage.h"
+#include "performanceMeasurement.h"
+#include "prebookmark.h"
+#include "psgs.h"
+#include "TeXFont.h"
+#include "xdvi.h"
+
+#include <kdebug.h>
+#include <klocale.h>
+#include <kmimetype.h>
+#include <kprocess.h>
+#include <kprocio.h>
+#include <kprogress.h>
+#include <qapplication.h>
+#include <qbitmap.h>
+#include <qdir.h>
+#include <qfileinfo.h>
+#include <qimage.h>
+#include <qpainter.h>
+#include <qpaintdevice.h>
+
+
+extern QPainter foreGroundPaint;
+extern void parse_special_argument(const QString& strg, const char* argument_name, int* variable);
+
+
+//#define DEBUG_PRESCAN
+
+
+void dviRenderer::prescan_embedPS(char *cp, Q_UINT8 *beginningOfSpecialCommand)
+{
+#ifdef DEBUG_PRESCAN
+ kdDebug(4300) << "dviRenderer::prescan_embedPS( cp = " << cp << " ) " << endl;
+#endif
+
+ // Encapsulated Postscript File
+ if (strncasecmp(cp, "PSfile=", 7) != 0)
+ return;
+
+ QString command(cp+7);
+
+ QString include_command = command.simplifyWhiteSpace();
+
+ // The line is supposed to start with "..ile=", and then comes the
+ // filename. Figure out what the filename is and stow it away. Of
+ // course, this does not work if the filename contains spaces
+ // (already the simplifyWhiteSpace() above is wrong). If you have
+ // files like this, go away.
+ QString EPSfilename = include_command;
+ EPSfilename.truncate(EPSfilename.find(' '));
+
+ // Strip enclosing quotation marks which are included by some LaTeX
+ // macro packages (but not by others). This probably means that
+ // graphic files are no longer found if the filename really does
+ // contain quotes, but we don't really care that much.
+ if ((EPSfilename.at(0) == '\"') && (EPSfilename.at(EPSfilename.length()-1) == '\"'))
+ EPSfilename = EPSfilename.mid(1,EPSfilename.length()-2);
+
+ // If the file is neither a PostScript not a PDF file, we exit here.
+ // The graphic file is later read when the page is rendered.
+ KMimeType::Ptr const mime_type =
+ KMimeType::findByFileContent(EPSfilename);
+ QString const & mime_type_name = mime_type->name();
+
+ bool const is_ps_file = (mime_type_name == "application/postscript" ||
+ mime_type_name == "image/x-eps");
+ bool const is_pdf_file = (!is_ps_file &&
+ mime_type_name == "application/pdf");
+ if (!(is_ps_file || is_pdf_file))
+ return;
+
+ QString originalFName = EPSfilename;
+
+ embedPS_progress->setLabel(i18n("Embedding %1").arg(EPSfilename));
+ qApp->processEvents();
+
+
+ // Now locate the Gfx file on the hard disk...
+ EPSfilename = ghostscript_interface::locateEPSfile(EPSfilename, baseURL);
+
+ // If the EPSfilename really points to a PDF file, convert that file now.
+ if (is_pdf_file)
+ EPSfilename = dviFile->convertPDFtoPS(EPSfilename);
+
+ if (!QFile::exists(EPSfilename)) {
+ // Find the number of the page
+ Q_UINT32 currentOffset = beginningOfSpecialCommand - dviFile->dvi_Data();
+ Q_UINT16 page;
+ for(page=0; page < dviFile->total_pages; page++)
+ if ((dviFile->page_offset[page] <= currentOffset) && (currentOffset <= dviFile->page_offset[page+1]))
+ break;
+ errorMsg += i18n("Page %1: The PostScript file <strong>%2</strong> could not be found.<br>").arg(page+1).arg(originalFName);
+ embedPS_progress->progressBar()->advance(1);
+ qApp->processEvents();
+ return;
+ }
+
+ // Now parse the arguments.
+ int llx = 0;
+ int lly = 0;
+ int urx = 0;
+ int ury = 0;
+ int rwi = 0;
+ int rhi = 0;
+ int angle = 0;
+
+ // just to avoid ambiguities; the filename could contain keywords
+ include_command = include_command.mid(include_command.find(' '));
+
+ parse_special_argument(include_command, "llx=", &llx);
+ parse_special_argument(include_command, "lly=", &lly);
+ parse_special_argument(include_command, "urx=", &urx);
+ parse_special_argument(include_command, "ury=", &ury);
+ parse_special_argument(include_command, "rwi=", &rwi);
+ parse_special_argument(include_command, "rhi=", &rhi);
+ parse_special_argument(include_command, "angle=", &angle);
+
+ int clip=include_command.find(" clip"); // -1 if clip keyword is not present, >= 0 otherwise
+
+ // Generate the PostScript commands to be included
+ QString PS = QString("ps: @beginspecial %1 @llx %2 @lly %3 @urx %4 @ury").arg(llx).arg(lly).arg(urx).arg(ury);
+ if (rwi != 0)
+ PS.append( QString(" %1 @rwi").arg(rwi) );
+ if (rhi != 0)
+ PS.append( QString(" %1 @rhi").arg(rhi) );
+ if (angle != 0)
+ PS.append( QString(" %1 @angle").arg(angle) );
+ if (clip != -1)
+ PS.append(" @clip");
+ PS.append( " @setspecial\n" );
+
+ QFile file( EPSfilename );
+ if ( file.open( IO_ReadOnly ) ) {
+ QTextStream stream( &file );
+ while ( !stream.atEnd() ) {
+ PS += stream.readLine().section( '%', 0, 0);
+ PS += "\n";
+ }
+ file.close();
+ }
+ PS.append( "@endspecial" );
+ PS = PS.simplifyWhiteSpace();
+
+
+ _isModified = true;
+ Q_UINT32 lengthOfOldSpecial = command_pointer - beginningOfSpecialCommand;
+ Q_UINT32 lengthOfNewSpecial = PS.length()+5;
+
+ QMemArray<Q_UINT8> newDVI(dviFile->size_of_file + lengthOfNewSpecial-lengthOfOldSpecial);
+
+ Q_UINT8 *commandPtrSav = command_pointer;
+ Q_UINT8 *endPtrSav = end_pointer;
+ end_pointer = newDVI.data() + dviFile->size_of_file + lengthOfNewSpecial-lengthOfOldSpecial;
+ memcpy(newDVI.data(), dviFile->dvi_Data(), beginningOfSpecialCommand-dviFile->dvi_Data());
+ command_pointer = newDVI.data()+(beginningOfSpecialCommand-dviFile->dvi_Data());
+ command_pointer[0] = XXX4;
+ command_pointer++;
+ writeUINT32(PS.length());
+ memcpy(newDVI.data()+(beginningOfSpecialCommand-dviFile->dvi_Data())+5, PS.latin1(), PS.length() );
+ memcpy(newDVI.data()+(beginningOfSpecialCommand-dviFile->dvi_Data())+lengthOfNewSpecial, beginningOfSpecialCommand+lengthOfOldSpecial,
+ dviFile->size_of_file-(beginningOfSpecialCommand-dviFile->dvi_Data())-lengthOfOldSpecial );
+
+ // Adjust page pointers in the DVI file
+ dviFile->size_of_file = dviFile->size_of_file + lengthOfNewSpecial-lengthOfOldSpecial;
+ end_pointer = newDVI.data() + dviFile->size_of_file;
+ Q_UINT32 currentOffset = beginningOfSpecialCommand-dviFile->dvi_Data();
+ for(Q_UINT16 i=0; i < dviFile->total_pages; i++) {
+ if (dviFile->page_offset[i] > currentOffset) {
+ dviFile->page_offset[i] = dviFile->page_offset[i] + lengthOfNewSpecial-lengthOfOldSpecial;
+ command_pointer = dviFile->page_offset[i] + newDVI.data() + 4*10 + 1;
+ Q_UINT32 a = readUINT32();
+ if (a > currentOffset) {
+ a = a + lengthOfNewSpecial-lengthOfOldSpecial;
+ command_pointer = dviFile->page_offset[i] + newDVI.data() + 4*10 + 1;
+ writeUINT32(a);
+ }
+ }
+ }
+
+
+ dviFile->beginning_of_postamble = dviFile->beginning_of_postamble + lengthOfNewSpecial - lengthOfOldSpecial;
+ dviFile->page_offset[dviFile->total_pages] = dviFile->beginning_of_postamble;
+
+ command_pointer = newDVI.data() + dviFile->beginning_of_postamble + 1;
+ Q_UINT32 a = readUINT32();
+ if (a > currentOffset) {
+ a = a + lengthOfNewSpecial - lengthOfOldSpecial;
+ command_pointer = newDVI.data() + dviFile->beginning_of_postamble + 1;
+ writeUINT32(a);
+ }
+
+ command_pointer = newDVI.data() + dviFile->size_of_file - 1;
+ while((*command_pointer == TRAILER) && (command_pointer > newDVI.data()))
+ command_pointer--;
+ command_pointer -= 4;
+ writeUINT32(dviFile->beginning_of_postamble);
+ command_pointer -= 4;
+
+ command_pointer = commandPtrSav;
+ end_pointer = endPtrSav;
+
+ // Modify all pointers to point to the newly allocated memory
+ command_pointer = newDVI.data() + (command_pointer - dviFile->dvi_Data()) + lengthOfNewSpecial-lengthOfOldSpecial;
+ end_pointer = newDVI.data() + (end_pointer - dviFile->dvi_Data()) + lengthOfNewSpecial-lengthOfOldSpecial;
+
+ dviFile->setNewData(newDVI);
+
+ embedPS_progress->progressBar()->advance(1);
+ qApp->processEvents();
+ return;
+}
+
+
+void dviRenderer::prescan_removePageSizeInfo(char *cp, Q_UINT8 *beginningOfSpecialCommand)
+{
+#ifdef DEBUG_PRESCAN
+ kdDebug(4300) << "dviRenderer::prescan_embedPS( cp = " << cp << " ) " << endl;
+#endif
+
+ // Encapsulated Postscript File
+ if (strncasecmp(cp, "papersize=", 10) != 0)
+ return;
+
+ for (Q_UINT8 *ptr=beginningOfSpecialCommand; ptr<command_pointer; ptr++)
+ *ptr = NOP;
+}
+
+
+void dviRenderer::prescan_ParsePapersizeSpecial(const QString& _cp)
+{
+#ifdef DEBUG_PRESCAN
+ kdDebug(4300) << "Papersize-Special : papersize" << cp << endl;
+#endif
+
+ QString cp = _cp.simplifyWhiteSpace();
+
+ if (cp[0] == '=') {
+ cp = cp.mid(1);
+ dviFile->suggestedPageSize = new pageSize;
+ dviFile->suggestedPageSize->setPageSize(cp);
+ } else
+ printErrorMsgForSpecials(i18n("The papersize data '%1' could not be parsed.").arg(cp));
+
+ return;
+}
+
+
+void dviRenderer::prescan_ParseBackgroundSpecial(const QString& cp)
+{
+ QColor col = parseColorSpecification(cp.stripWhiteSpace());
+ if (col.isValid())
+ for(Q_UINT16 page=current_page; page < dviFile->total_pages; page++)
+ PS_interface->setBackgroundColor(page, col);
+ return;
+}
+
+
+void dviRenderer::prescan_ParseHTMLAnchorSpecial(const QString& _cp)
+{
+ QString cp = _cp;
+ cp.truncate(cp.find('"'));
+ Length l;
+ l.setLength_in_inch(currinf.data.dvi_v/(resolutionInDPI*shrinkfactor));
+ anchorList[cp] = Anchor(current_page+1, l);
+}
+
+
+void dviRenderer::prescan_ParsePSHeaderSpecial(const QString& cp)
+{
+#ifdef DEBUG_PRESCAN
+ kdDebug(4300) << "PostScript-special, header " << cp.latin1() << endl;
+#endif
+
+ QString _file = cp;
+
+ // If the file is not found in the current directory, use kpsewhich
+ // to find it.
+ if (!QFile::exists(_file)) {
+ // Otherwise, use kpsewhich to find the eps file.
+ KProcIO proc;
+ proc << "kpsewhich" << cp;
+ proc.start(KProcess::Block);
+ proc.readln(_file);
+ }
+
+ if (QFile::exists(_file))
+ PS_interface->PostScriptHeaderString->append( QString(" (%1) run\n").arg(_file) );
+}
+
+
+void dviRenderer::prescan_ParsePSBangSpecial(const QString& cp)
+{
+#ifdef DEBUG_PRESCAN
+ kdDebug(4300) << "PostScript-special, literal header " << cp.latin1() << endl;
+#endif
+
+ PS_interface->PostScriptHeaderString->append( " @defspecial \n" );
+ PS_interface->PostScriptHeaderString->append( cp );
+ PS_interface->PostScriptHeaderString->append( " @fedspecial \n" );
+}
+
+
+void dviRenderer::prescan_ParsePSQuoteSpecial(const QString& cp)
+{
+#ifdef DEBUG_PRESCAN
+ kdError(4300) << "PostScript-special, literal PostScript " << cp.latin1() << endl;
+#endif
+
+ double PS_H = (currinf.data.dvi_h*300.0)/(65536*1200)-300;
+ double PS_V = (currinf.data.dvi_v*300.0)/1200 - 300;
+ PostScriptOutPutString->append( QString(" %1 %2 moveto\n").arg(PS_H).arg(PS_V) );
+ PostScriptOutPutString->append( " @beginspecial @setspecial \n" );
+ PostScriptOutPutString->append( cp );
+ PostScriptOutPutString->append( " @endspecial \n" );
+}
+
+
+void dviRenderer::prescan_ParsePSSpecial(const QString& cp)
+{
+#ifdef DEBUG_PRESCAN
+ kdDebug(4300) << "PostScript-special, direct PostScript " << cp << endl;
+#endif
+
+ // 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 (cp.startsWith("ps:SDict begin")) {
+ // We suspect this may be hyperref generated nonsense. Let's check
+ // for some known code that hyperref generates.
+ if (cp == "ps:SDict begin H.S end")
+ return; // start of hyperref rectangle
+ if (cp == "ps:SDict begin H.R end")
+ return; // end of hyperref rectangle
+ if (cp.endsWith("H.A end"))
+ return; // end of hyperref anchor
+ if (cp.endsWith("H.L end"))
+ return; // end of hyperref link
+ if (cp.startsWith("ps:SDict begin /product where{pop product(Distiller)"))
+ return; // hyperref tries to work around Distiller bug
+ if (cp.startsWith("ps:SDict begin [") && cp.endsWith(" pdfmark end")) { // hyperref definition of link/anchor/bookmark/etc
+ if (cp.contains("/DEST")) { // The PostScript code defines an anchor
+ QString anchorName = cp.section('(', 1, 1).section(')', 0, 0);
+ Length l;
+ l.setLength_in_inch(currinf.data.dvi_v/(resolutionInDPI*shrinkfactor));
+ anchorList[anchorName] = Anchor(current_page+1, l);
+ }
+ // The PostScript code defines a bookmark
+ if (cp.contains("/Dest") && cp.contains("/Title"))
+ prebookmarks.append(PreBookmark(PDFencodingToQString(cp.section('(', 2, 2).section(')', 0, 0)),
+ cp.section('(', 1, 1).section(')', 0, 0),
+ cp.section('-', 1, 1).section(' ', 0, 0).toUInt()
+ ));
+ return;
+ }
+ }
+
+ double PS_H = (currinf.data.dvi_h*300.0)/(65536*1200)-300;
+ double PS_V = (currinf.data.dvi_v*300.0)/1200 - 300;
+
+ if (cp.find("ps::[begin]", 0, false) == 0) {
+ PostScriptOutPutString->append( QString(" %1 %2 moveto\n").arg(PS_H).arg(PS_V) );
+ PostScriptOutPutString->append( QString(" %1\n").arg(cp.mid(11)) );
+ } else {
+ if (cp.find("ps::[end]", 0, false) == 0) {
+ PostScriptOutPutString->append( QString(" %1\n").arg(cp.mid(9)) );
+ } else {
+ if (cp.find("ps::", 0, false) == 0) {
+ PostScriptOutPutString->append( QString(" %1\n").arg(cp.mid(4)) );
+ } else {
+ PostScriptOutPutString->append( QString(" %1 %2 moveto\n").arg(PS_H).arg(PS_V) );
+ PostScriptOutPutString->append( QString(" %1\n").arg(cp.mid(3)) );
+ }
+ }
+ }
+}
+
+
+void dviRenderer::prescan_ParsePSFileSpecial(const QString& cp)
+{
+#ifdef DEBUG_PRESCAN
+ kdDebug(4300) << "epsf-special: psfile=" << cp <<endl;
+#endif
+
+ QString include_command = cp.simplifyWhiteSpace();
+
+ // The line is supposed to start with "..ile=", and then comes the
+ // filename. Figure out what the filename is and stow it away. Of
+ // course, this does not work if the filename contains spaces
+ // (already the simplifyWhiteSpace() above is wrong). If you have
+ // files like this, go away.
+ QString EPSfilename = include_command;
+ EPSfilename.truncate(EPSfilename.find(' '));
+
+ // Strip enclosing quotation marks which are included by some LaTeX
+ // macro packages (but not by others). This probably means that
+ // graphic files are no longer found if the filename really does
+ // contain quotes, but we don't really care that much.
+ if ((EPSfilename.at(0) == '\"') && (EPSfilename.at(EPSfilename.length()-1) == '\"')) {
+ EPSfilename = EPSfilename.mid(1,EPSfilename.length()-2);
+ }
+
+ // If the file name ends in 'png', 'gif', 'jpg' or 'jpeg', we assume
+ // that this is NOT a PostScript file, and we exit here.
+ QString ending = EPSfilename.section('.', -1).lower();
+ if ((ending == "png") || (ending == "gif") || (ending == "jpg") || (ending == "jpeg")) {
+ dviFile->numberOfExternalNONPSFiles++;
+ return;
+ }
+
+ // Now assume that the graphics file *is* a PostScript file
+ dviFile->numberOfExternalPSFiles++;
+
+ // Now locate the Gfx file on the hard disk...
+ EPSfilename = ghostscript_interface::locateEPSfile(EPSfilename, baseURL);
+
+ // If the EPSfilename really points to a PDF file, convert that file now.
+ if (ending == "pdf")
+ EPSfilename = dviFile->convertPDFtoPS(EPSfilename);
+
+ // Now parse the arguments.
+ int llx = 0;
+ int lly = 0;
+ int urx = 0;
+ int ury = 0;
+ int rwi = 0;
+ int rhi = 0;
+ int angle = 0;
+
+ // just to avoid ambiguities; the filename could contain keywords
+ include_command = include_command.mid(include_command.find(' '));
+
+ parse_special_argument(include_command, "llx=", &llx);
+ parse_special_argument(include_command, "lly=", &lly);
+ parse_special_argument(include_command, "urx=", &urx);
+ parse_special_argument(include_command, "ury=", &ury);
+ parse_special_argument(include_command, "rwi=", &rwi);
+ parse_special_argument(include_command, "rhi=", &rhi);
+ parse_special_argument(include_command, "angle=", &angle);
+
+ int clip=include_command.find(" clip"); // -1 if clip keyword is not present, >= 0 otherwise
+
+ if (QFile::exists(EPSfilename)) {
+ double PS_H = (currinf.data.dvi_h*300.0)/(65536*1200)-300;
+ double PS_V = (currinf.data.dvi_v*300.0)/1200 - 300;
+ PostScriptOutPutString->append( QString(" %1 %2 moveto\n").arg(PS_H).arg(PS_V) );
+ PostScriptOutPutString->append( "@beginspecial " );
+ PostScriptOutPutString->append( QString(" %1 @llx").arg(llx) );
+ PostScriptOutPutString->append( QString(" %1 @lly").arg(lly) );
+ PostScriptOutPutString->append( QString(" %1 @urx").arg(urx) );
+ PostScriptOutPutString->append( QString(" %1 @ury").arg(ury) );
+ if (rwi != 0)
+ PostScriptOutPutString->append( QString(" %1 @rwi").arg(rwi) );
+ if (rhi != 0)
+ PostScriptOutPutString->append( QString(" %1 @rhi").arg(rhi) );
+ if (angle != 0)
+ PostScriptOutPutString->append( QString(" %1 @angle").arg(angle) );
+ if (clip != -1)
+ PostScriptOutPutString->append(" @clip");
+ PostScriptOutPutString->append( " @setspecial \n" );
+ PostScriptOutPutString->append( QString(" (%1) run\n").arg(EPSfilename) );
+ PostScriptOutPutString->append( "@endspecial \n" );
+ }
+
+ return;
+}
+
+
+void dviRenderer::prescan_ParseSourceSpecial(const QString& cp)
+{
+ // if no rendering takes place, i.e. when the DVI file is first
+ // loaded, generate a DVI_SourceFileAnchor. These anchors are used
+ // in forward search, i.e. to relate references line
+ // "src:123file.tex" to positions in the DVI file
+
+ // extract the file name and the numeral part from the string
+ Q_UINT32 j;
+ for(j=0;j<cp.length();j++)
+ if (!cp.at(j).isNumber())
+ break;
+ Q_UINT32 sourceLineNumber = cp.left(j).toUInt();
+ QFileInfo fi1(dviFile->filename);
+ QString sourceFileName = QFileInfo(fi1.dir(), cp.mid(j).stripWhiteSpace()).absFilePath();
+ Length l;
+ l.setLength_in_inch(currinf.data.dvi_v/(resolutionInDPI*shrinkfactor));
+ DVI_SourceFileAnchor sfa(sourceFileName, sourceLineNumber, current_page+1, l);
+ sourceHyperLinkAnchors.push_back(sfa);
+}
+
+
+void dviRenderer::prescan_parseSpecials(char *cp, Q_UINT8 *)
+{
+ QString special_command(cp);
+
+ // Now to those specials which are only interpreted during the
+ // prescan phase, and NOT during rendering.
+
+ // PaperSize special
+ if (strncasecmp(cp, "papersize", 9) == 0) {
+ prescan_ParsePapersizeSpecial(special_command.mid(9));
+ return;
+ }
+
+ // color special for background color
+ if (strncasecmp(cp, "background", 10) == 0) {
+ prescan_ParseBackgroundSpecial(special_command.mid(10));
+ return;
+ }
+
+ // HTML anchor special
+ if (strncasecmp(cp, "html:<A name=", 13) == 0) {
+ prescan_ParseHTMLAnchorSpecial(special_command.mid(14));
+ return;
+ }
+
+ // Postscript Header File
+ if (strncasecmp(cp, "header=", 7) == 0) {
+ prescan_ParsePSHeaderSpecial(special_command.mid(7));
+ return;
+ }
+
+ // Literal Postscript Header
+ if (cp[0] == '!') {
+ prescan_ParsePSBangSpecial(special_command.mid(1));
+ return;
+ }
+
+ // Literal Postscript inclusion
+ if (cp[0] == '"') {
+ prescan_ParsePSQuoteSpecial(special_command.mid(1));
+ return;
+ }
+
+ // PS-Postscript inclusion
+ if (strncasecmp(cp, "ps:", 3) == 0) {
+ prescan_ParsePSSpecial(special_command);
+ return;
+ }
+
+ // Encapsulated Postscript File
+ if (strncasecmp(cp, "PSfile=", 7) == 0) {
+ prescan_ParsePSFileSpecial(special_command.mid(7));
+ return;
+ }
+
+ // source special
+ if (strncasecmp(cp, "src:", 4) == 0) {
+ prescan_ParseSourceSpecial(special_command.mid(4));
+ return;
+ }
+
+ // Finally there are those special commands which must be considered
+ // both during rendering and during the pre-scan phase
+
+ // HTML anchor end
+ if (strncasecmp(cp, "html:</A>", 9) == 0) {
+ html_anchor_end();
+ return;
+ }
+
+ return;
+}
+
+
+void dviRenderer::prescan_setChar(unsigned int ch)
+{
+ TeXFontDefinition *fontp = currinf.fontp;
+ if (fontp == NULL)
+ return;
+
+ if (currinf.set_char_p == &dviRenderer::set_char) {
+ glyph *g = ((TeXFont *)(currinf.fontp->font))->getGlyph(ch, true, globalColor);
+ if (g == NULL)
+ return;
+ currinf.data.dvi_h += (int)(currinf.fontp->scaled_size_in_DVI_units * dviFile->getCmPerDVIunit() *
+ (1200.0 / 2.54)/16.0 * g->dvi_advance_in_units_of_design_size_by_2e20 + 0.5);
+ return;
+ }
+
+ if (currinf.set_char_p == &dviRenderer::set_vf_char) {
+ macro *m = &currinf.fontp->macrotable[ch];
+ if (m->pos == NULL)
+ return;
+ currinf.data.dvi_h += (int)(currinf.fontp->scaled_size_in_DVI_units * dviFile->getCmPerDVIunit() *
+ (1200.0 / 2.54)/16.0 * m->dvi_advance_in_units_of_design_size_by_2e20 + 0.5);
+ return;
+ }
+}
+
+
+void dviRenderer::prescan(parseSpecials specialParser)
+{
+#ifdef DEBUG_PRESCAN
+ kdDebug(4300) << "dviRenderer::prescan( ... )" << endl;
+#endif
+
+ if (resolutionInDPI == 0.0)
+ setResolution(100);
+
+ Q_INT32 RRtmp=0, WWtmp=0, XXtmp=0, YYtmp=0, ZZtmp=0;
+ Q_UINT8 ch;
+ double fontPixelPerDVIunit = dviFile->getCmPerDVIunit() * 1200.0/2.54;
+
+ stack.clear();
+
+ currinf.fontp = NULL;
+ currinf.set_char_p = &dviRenderer::set_no_char;
+
+ for (;;) {
+ ch = readUINT8();
+
+ if (ch <= (unsigned char) (SETCHAR0 + 127)) {
+ prescan_setChar(ch);
+ continue;
+ }
+
+ if (FNTNUM0 <= ch && ch <= (unsigned char) (FNTNUM0 + 63)) {
+ currinf.fontp = currinf.fonttable->find(ch - FNTNUM0);
+ if (currinf.fontp == NULL) {
+ errorMsg = i18n("The DVI code referred to font #%1, which was not previously defined.").arg(ch - FNTNUM0);
+ return;
+ }
+ currinf.set_char_p = currinf.fontp->set_char_p;
+ continue;
+ }
+
+
+ Q_INT32 a, b;
+
+ switch (ch) {
+ case SET1:
+ prescan_setChar(readUINT8());
+ break;
+
+ case SETRULE:
+ /* Be careful, dvicopy outputs rules with height =
+ 0x80000000. We don't want any SIGFPE here. */
+ a = readUINT32();
+ b = readUINT32();
+ b = ((long) (b * 65536.0*fontPixelPerDVIunit));
+ currinf.data.dvi_h += b;
+ break;
+
+ case PUTRULE:
+ a = readUINT32();
+ b = readUINT32();
+ break;
+
+ case PUT1:
+ case NOP:
+ break;
+
+ case BOP:
+ command_pointer += 11 * 4;
+ currinf.data.dvi_h = 1200 << 16; // Reminder: DVI-coordinates start at (1",1") from top of page
+ currinf.data.dvi_v = 1200;
+ currinf.data.pxl_v = int(currinf.data.dvi_v/shrinkfactor);
+ currinf.data.w = currinf.data.x = currinf.data.y = currinf.data.z = 0;
+ break;
+
+ case PUSH:
+ stack.push(currinf.data);
+ break;
+
+ case POP:
+ if (stack.isEmpty())
+ return;
+ else
+ currinf.data = stack.pop();
+ break;
+
+ case RIGHT1:
+ case RIGHT2:
+ case RIGHT3:
+ case RIGHT4:
+ RRtmp = readINT(ch - RIGHT1 + 1);
+ currinf.data.dvi_h += ((long) (RRtmp * 65536.0*fontPixelPerDVIunit));
+ break;
+
+ case W1:
+ case W2:
+ case W3:
+ case W4:
+ WWtmp = readINT(ch - W0);
+ currinf.data.w = ((long) (WWtmp * 65536.0*fontPixelPerDVIunit));
+ case W0:
+ currinf.data.dvi_h += currinf.data.w;
+ break;
+
+ case X1:
+ case X2:
+ case X3:
+ case X4:
+ XXtmp = readINT(ch - X0);
+ currinf.data.x = ((long) (XXtmp * 65536.0*fontPixelPerDVIunit));
+ case X0:
+ currinf.data.dvi_h += currinf.data.x;
+ break;
+
+ case DOWN1:
+ case DOWN2:
+ case DOWN3:
+ case DOWN4:
+ {
+ Q_INT32 DDtmp = readINT(ch - DOWN1 + 1);
+ currinf.data.dvi_v += ((long) (DDtmp * 65536.0*fontPixelPerDVIunit))/65536;
+ currinf.data.pxl_v = int(currinf.data.dvi_v/shrinkfactor);
+ }
+ break;
+
+ case Y1:
+ case Y2:
+ case Y3:
+ case Y4:
+ YYtmp = readINT(ch - Y0);
+ currinf.data.y = ((long) (YYtmp * 65536.0*fontPixelPerDVIunit));
+ case Y0:
+ currinf.data.dvi_v += currinf.data.y/65536;
+ currinf.data.pxl_v = int(currinf.data.dvi_v/shrinkfactor);
+ break;
+
+ case Z1:
+ case Z2:
+ case Z3:
+ case Z4:
+ ZZtmp = readINT(ch - Z0);
+ currinf.data.z = ((long) (ZZtmp * 65536.0*fontPixelPerDVIunit));
+ case Z0:
+ currinf.data.dvi_v += currinf.data.z/65536;
+ currinf.data.pxl_v = int(currinf.data.dvi_v/shrinkfactor);
+ break;
+
+ case FNT1:
+ case FNT2:
+ case FNT3:
+ case FNT4:
+ currinf.fontp = currinf.fonttable->find(readUINT(ch - FNT1 + 1));
+ if (currinf.fontp == NULL)
+ return;
+ currinf.set_char_p = currinf.fontp->set_char_p;
+ break;
+
+ case XXX1:
+ case XXX2:
+ case XXX3:
+ case XXX4:
+ {
+ Q_UINT8 *beginningOfSpecialCommand = command_pointer-1;
+ a = readUINT(ch - XXX1 + 1);
+ if (a > 0) {
+ char *cmd = new char[a+1];
+ strncpy(cmd, (char *)command_pointer, a);
+ command_pointer += a;
+ cmd[a] = '\0';
+ (this->*specialParser)(cmd, beginningOfSpecialCommand);
+ delete [] cmd;
+ }
+ }
+ break;
+
+ case FNTDEF1:
+ case FNTDEF2:
+ case FNTDEF3:
+ case FNTDEF4:
+ command_pointer += 12 + ch - FNTDEF1 + 1;
+ command_pointer += readUINT8() + readUINT8();
+ break;
+
+ default:
+ return;
+ } /* end switch */
+ } /* end for */
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 02:04:07 +0000