src/insets/InsetExternal.cpp

   1 /**
   2  * \file InsetExternal.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Asger Alstrup Nielsen
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "InsetExternal.h"
  14 #include "insets/ExternalSupport.h"
  15 #include "insets/ExternalTemplate.h"
  16 #include "insets/RenderButton.h"
  17 #include "insets/RenderGraphic.h"
  18 #include "insets/RenderPreview.h"
  19
  20 #include "Buffer.h"
  21 #include "Cursor.h"
  22 #include "debug.h"
  23 #include "DispatchResult.h"
  24 #include "Exporter.h"
  25 #include "FuncStatus.h"
  26 #include "FuncRequest.h"
  27 #include "gettext.h"
  28 #include "LaTeXFeatures.h"
  29 #include "Lexer.h"
  30 #include "LyXRC.h"
  31 #include "MetricsInfo.h"
  32 #include "OutputParams.h"
  33
  34 #include "graphics/PreviewLoader.h"
  35
  36 #include "support/filetools.h"
  37 #include "support/lstrings.h"
  38 #include "support/lyxlib.h"
  39 #include "support/convert.h"
  40 #include "support/Translator.h"
  41
  42 #include <boost/bind.hpp>
  43
  44 #include <sstream>
  45
  46 using std::string;
  47 using std::istringstream;
  48 using std::ostream;
  49 using std::ostringstream;
  50 using std::vector;
  51
  52 using lyx::support::DocFileName;
  53
  54 namespace {
  55
  56 lyx::external::DisplayType const defaultDisplayType = lyx::external::NoDisplay;
  57
  58 unsigned int const defaultLyxScale = 100;
  59
  60 string defaultTemplateName;
  61
  62 } // namespace anon
  63
  64
  65 namespace lyx {
  66
  67 extern bool use_gui;
  68
  69 namespace external {
  70
  71 TempName::TempName()
  72 {
  73         support::FileName const tempname(support::tempName(support::FileName(), "lyxext"));
  74         // FIXME: This is unsafe
  75         tempname.removeFile();
  76         // must have an extension for the converter code to work correctly.
  77         tempname_ = support::FileName(tempname.absFilename() + ".tmp");
  78 }
  79
  80
  81 TempName::TempName(TempName const &)
  82 {
  83         tempname_ = TempName()();
  84 }
  85
  86
  87 TempName::~TempName()
  88 {
  89         tempname_.removeFile();
  90 }
  91
  92
  93 TempName & TempName::operator=(TempName const & other)
  94 {
  95         if (this != &other)
  96                 tempname_ = TempName()();
  97         return *this;
  98 }
  99
 100
 101 namespace {
 102
 103 /// The translator between the Display enum and corresponding lyx string.
 104 Translator<DisplayType, string> const initTranslator()
 105 {
 106         Translator<DisplayType, string> translator(DefaultDisplay, "default");
 107
 108         // Fill the display translator
 109         translator.addPair(MonochromeDisplay, "monochrome");
 110         translator.addPair(GrayscaleDisplay, "grayscale");
 111         translator.addPair(ColorDisplay, "color");
 112         translator.addPair(PreviewDisplay, "preview");
 113         translator.addPair(NoDisplay, "none");
 114
 115         return translator;
 116 }
 117
 118 } // namespace anon
 119
 120
 121 Translator<DisplayType, string> const & displayTranslator()
 122 {
 123         static Translator<DisplayType, string> const translator =
 124                 initTranslator();
 125         return translator;
 126 }
 127
 128 } // namespace external
 129
 130
 131 InsetExternalParams::InsetExternalParams()
 132         : display(defaultDisplayType),
 133           lyxscale(defaultLyxScale),
 134           draft(false)
 135 {
 136         if (defaultTemplateName.empty()) {
 137                 external::TemplateManager const & etm =
 138                         external::TemplateManager::get();
 139                 templatename_ = etm.getTemplates().begin()->first;
 140         } else
 141                 templatename_ = defaultTemplateName;
 142 }
 143
 144
 145 namespace {
 146
 147 template <typename T>
 148 void clearIfNotFound(T & data, external::TransformID value,
 149                      vector<external::TransformID> const & ids)
 150 {
 151         typedef vector<external::TransformID>::const_iterator
 152                 const_iterator;
 153
 154         const_iterator it  = ids.begin();
 155         const_iterator end = ids.end();
 156         it = std::find(it, end, value);
 157         if (it == end)
 158                 data = T();
 159 }
 160
 161 } // namespace anon
 162
 163
 164 void InsetExternalParams::settemplate(string const & name)
 165 {
 166         templatename_ = name;
 167
 168         external::TemplateManager const & etm =
 169                 external::TemplateManager::get();
 170         external::Template const * const et = etm.getTemplateByName(name);
 171         if (!et)
 172                 // Be safe. Don't lose data.
 173                 return;
 174
 175         // Ascertain which transforms the template supports.
 176         // Empty all those that it doesn't.
 177         vector<external::TransformID> const & ids = et->transformIds;
 178         clearIfNotFound(clipdata,     external::Clip,   ids);
 179         clearIfNotFound(extradata,    external::Extra,  ids);
 180         clearIfNotFound(resizedata,   external::Resize, ids);
 181         clearIfNotFound(rotationdata, external::Rotate, ids);
 182 }
 183
 184
 185 void InsetExternalParams::write(Buffer const & buffer, ostream & os) const
 186 {
 187         os << "External\n"
 188            << "\ttemplate " << templatename() << '\n';
 189
 190         if (!filename.empty()) {
 191                 // when we save, we still use the original filename
 192                 EmbeddedFiles::EmbeddedFileList::const_iterator it =
 193                         buffer.embeddedFiles().find(filename.toFilesystemEncoding());
 194                 if (it != buffer.embeddedFiles().end())
 195                         os << "\tfilename " << DocFileName(it->absFilename()).outputFilename(buffer.filePath()) << '\n';
 196                 else
 197                         os << "\tfilename " << filename.outputFilename(buffer.filePath()) << '\n';
 198         }
 199
 200         if (display != defaultDisplayType)
 201                 os << "\tdisplay "
 202                    << external::displayTranslator().find(display)
 203                    << '\n';
 204
 205         if (lyxscale != defaultLyxScale)
 206                 os << "\tlyxscale " << convert<string>(lyxscale) << '\n';
 207
 208         if (draft)
 209                 os << "\tdraft\n";
 210
 211         if (!clipdata.bbox.empty())
 212                 os << "\tboundingBox " << clipdata.bbox << '\n';
 213         if (clipdata.clip)
 214                 os << "\tclip\n";
 215
 216         external::ExtraData::const_iterator it  = extradata.begin();
 217         external::ExtraData::const_iterator end = extradata.end();
 218         for (; it != end; ++it) {
 219                 if (!it->second.empty())
 220                         os << "\textra " << it->first << " \""
 221                            << it->second << "\"\n";
 222         }
 223
 224         if (!rotationdata.no_rotation()) {
 225                 os << "\trotateAngle " << rotationdata.adjAngle() << '\n';
 226                 if (rotationdata.origin() != external::RotationData::DEFAULT)
 227                         os << "\trotateOrigin "
 228                            << rotationdata.originString() << '\n';
 229         }
 230
 231         if (!resizedata.no_resize()) {
 232                 using support::float_equal;
 233                 double const scl = convert<double>(resizedata.scale);
 234                 if (!float_equal(scl, 0.0, 0.05)) {
 235                         if (!float_equal(scl, 100.0, 0.05))
 236                                 os << "\tscale "
 237                                    << resizedata.scale << '\n';
 238                 } else {
 239                         if (!resizedata.width.zero())
 240                                 os << "\twidth "
 241                                    << resizedata.width.asString() << '\n';
 242                         if (!resizedata.height.zero())
 243                                 os << "\theight "
 244                                    << resizedata.height.asString() << '\n';
 245                 }
 246                 if (resizedata.keepAspectRatio)
 247                         os << "\tkeepAspectRatio\n";
 248         }
 249 }
 250
 251
 252 bool InsetExternalParams::read(Buffer const & buffer, Lexer & lex)
 253 {
 254         enum ExternalTags {
 255                 EX_TEMPLATE = 1,
 256                 EX_FILENAME,
 257                 EX_DISPLAY,
 258                 EX_LYXSCALE,
 259                 EX_DRAFT,
 260                 EX_BOUNDINGBOX,
 261                 EX_CLIP,
 262                 EX_EXTRA,
 263                 EX_HEIGHT,
 264                 EX_KEEPASPECTRATIO,
 265                 EX_ROTATEANGLE,
 266                 EX_ROTATEORIGIN,
 267                 EX_SCALE,
 268                 EX_WIDTH,
 269                 EX_END
 270         };
 271
 272         keyword_item external_tags[] = {
 273                 { "\\end_inset",     EX_END },
 274                 { "boundingBox",     EX_BOUNDINGBOX },
 275                 { "clip",            EX_CLIP },
 276                 { "display",         EX_DISPLAY},
 277                 { "draft",           EX_DRAFT},
 278                 { "extra",           EX_EXTRA },
 279                 { "filename",        EX_FILENAME},
 280                 { "height",          EX_HEIGHT },
 281                 { "keepAspectRatio", EX_KEEPASPECTRATIO },
 282                 { "lyxscale",        EX_LYXSCALE},
 283                 { "rotateAngle",     EX_ROTATEANGLE },
 284                 { "rotateOrigin",    EX_ROTATEORIGIN },
 285                 { "scale",           EX_SCALE },
 286                 { "template",        EX_TEMPLATE },
 287                 { "width",           EX_WIDTH }
 288         };
 289
 290         PushPopHelper pph(lex, external_tags, EX_END);
 291
 292         bool found_end  = false;
 293         bool read_error = false;
 294
 295         while (lex.isOK()) {
 296                 switch (lex.lex()) {
 297                 case EX_TEMPLATE:
 298                         lex.next();
 299                         templatename_ = lex.getString();
 300                         break;
 301
 302                 case EX_FILENAME: {
 303                         lex.eatLine();
 304                         string const name = lex.getString();
 305                         filename.set(name, buffer.filePath());
 306                         // maybe this file is embedded
 307                         EmbeddedFiles::EmbeddedFileList::const_iterator it = buffer.embeddedFiles().find(filename.toFilesystemEncoding());
 308                         if (it != buffer.embeddedFiles().end())
 309                                 // using available file, embedded or external, depending on file availability and
 310                                 // embedding status.
 311                                 filename = DocFileName(it->availableFile(&buffer));
 312                         break;
 313                 }
 314
 315                 case EX_DISPLAY: {
 316                         lex.next();
 317                         string const name = lex.getString();
 318                         display = external::displayTranslator().find(name);
 319                         break;
 320                 }
 321
 322                 case EX_LYXSCALE:
 323                         lex.next();
 324                         lyxscale = lex.getInteger();
 325                         break;
 326
 327                 case EX_DRAFT:
 328                         draft = true;
 329                         break;
 330
 331                 case EX_BOUNDINGBOX:
 332                         lex.next();
 333                         clipdata.bbox.xl = lex.getInteger();
 334                         lex.next();
 335                         clipdata.bbox.yb = lex.getInteger();
 336                         lex.next();
 337                         clipdata.bbox.xr = lex.getInteger();
 338                         lex.next();
 339                         clipdata.bbox.yt = lex.getInteger();
 340                         break;
 341
 342                 case EX_CLIP:
 343                         clipdata.clip = true;
 344                         break;
 345
 346                 case EX_EXTRA: {
 347                         lex.next();
 348                         string const name = lex.getString();
 349                         lex.next();
 350                         extradata.set(name, lex.getString());
 351                         break;
 352                 }
 353
 354                 case EX_HEIGHT:
 355                         lex.next();
 356                         resizedata.height = Length(lex.getString());
 357                         break;
 358
 359                 case EX_KEEPASPECTRATIO:
 360                         resizedata.keepAspectRatio = true;
 361                         break;
 362
 363                 case EX_ROTATEANGLE:
 364                         lex.next();
 365                         rotationdata.angle = lex.getString();
 366                         break;
 367
 368                 case EX_ROTATEORIGIN:
 369                         lex.next();
 370                         rotationdata.origin(lex.getString());
 371                         break;
 372
 373                 case EX_SCALE:
 374                         lex.next();
 375                         resizedata.scale = lex.getString();
 376                         break;
 377
 378                 case EX_WIDTH:
 379                         lex.next();
 380                         resizedata.width = Length(lex.getString());
 381                         break;
 382
 383                 case EX_END:
 384                         found_end = true;
 385                         break;
 386
 387                 default:
 388                         lex.printError("ExternalInset::read: Wrong tag: $$Token");
 389                         read_error = true;
 390                         break;
 391                 }
 392
 393                 if (found_end || read_error)
 394                         break;
 395         }
 396
 397         if (!found_end)
 398                 lex.printError("ExternalInsetParams::read: Missing \\end_inset.");
 399
 400         // This is a trick to make sure that the data are self-consistent.
 401         settemplate(templatename_);
 402
 403         if (lyxerr.debugging(Debug::EXTERNAL)) {
 404                 lyxerr  << "InsetExternalParams::read:\n";
 405                 write(buffer, lyxerr);
 406         }
 407
 408         return !read_error;
 409 }
 410
 411
 412 InsetExternal::InsetExternal()
 413         : renderer_(new RenderButton)
 414 {}
 415
 416
 417 InsetExternal::InsetExternal(InsetExternal const & other)
 418         : Inset(other),
 419           boost::signals::trackable(),
 420           params_(other.params_),
 421           renderer_(other.renderer_->clone(this))
 422 {}
 423
 424
 425 Inset * InsetExternal::clone() const
 426 {
 427         return new InsetExternal(*this);
 428 }
 429
 430
 431 InsetExternal::~InsetExternal()
 432 {
 433         InsetExternalMailer(*this).hideDialog();
 434 }
 435
 436
 437 void InsetExternal::statusChanged() const
 438 {
 439         updateFrontend();
 440 }
 441
 442
 443 void InsetExternal::doDispatch(Cursor & cur, FuncRequest & cmd)
 444 {
 445         switch (cmd.action) {
 446
 447         case LFUN_EXTERNAL_EDIT: {
 448                 Buffer const & buffer = cur.buffer();
 449                 InsetExternalParams p;
 450                 InsetExternalMailer::string2params(to_utf8(cmd.argument()), buffer, p);
 451                 external::editExternal(p, buffer);
 452                 break;
 453         }
 454
 455         case LFUN_INSET_MODIFY: {
 456                 Buffer const & buffer = cur.buffer();
 457                 InsetExternalParams p;
 458                 InsetExternalMailer::string2params(to_utf8(cmd.argument()), buffer, p);
 459                 setParams(p, buffer);
 460                 break;
 461         }
 462
 463         case LFUN_INSET_DIALOG_UPDATE:
 464                 InsetExternalMailer(*this).updateDialog(&cur.bv());
 465                 break;
 466
 467         case LFUN_MOUSE_RELEASE:
 468                 if (!cur.selection())
 469                         InsetExternalMailer(*this).showDialog(&cur.bv());
 470                 break;
 471
 472         default:
 473                 Inset::doDispatch(cur, cmd);
 474         }
 475 }
 476
 477
 478 bool InsetExternal::getStatus(Cursor & cur, FuncRequest const & cmd,
 479                 FuncStatus & flag) const
 480 {
 481         switch (cmd.action) {
 482
 483         case LFUN_EXTERNAL_EDIT:
 484         case LFUN_INSET_MODIFY:
 485         case LFUN_INSET_DIALOG_UPDATE:
 486                 flag.enabled(true);
 487                 return true;
 488
 489         default:
 490                 return Inset::getStatus(cur, cmd, flag);
 491         }
 492 }
 493
 494
 495 void InsetExternal::registerEmbeddedFiles(Buffer const &,
 496         EmbeddedFiles & files) const
 497 {
 498         files.registerFile(params_.filename.absFilename(), false, this);
 499 }
 500
 501
 502 void InsetExternal::edit(Cursor & cur, bool)
 503 {
 504         InsetExternalMailer(*this).showDialog(&cur.bv());
 505 }
 506
 507
 508 void InsetExternal::metrics(MetricsInfo & mi, Dimension & dim) const
 509 {
 510         renderer_->metrics(mi, dim);
 511 }
 512
 513
 514 void InsetExternal::draw(PainterInfo & pi, int x, int y) const
 515 {
 516         renderer_->draw(pi, x, y);
 517 }
 518
 519
 520 namespace {
 521
 522 enum RenderType {
 523         RENDERBUTTON,
 524         RENDERGRAPHIC,
 525         RENDERPREVIEW
 526 };
 527
 528
 529 RenderType getRenderType(InsetExternalParams const & p)
 530 {
 531         if (!external::getTemplatePtr(p) ||
 532             p.filename.empty() ||
 533             p.display == external::NoDisplay)
 534                 return RENDERBUTTON;
 535
 536         if (p.display == external::PreviewDisplay) {
 537                 if (RenderPreview::status() != LyXRC::PREVIEW_OFF)
 538                         return RENDERPREVIEW;
 539                 return RENDERBUTTON;
 540         }
 541
 542         if (p.display == external::DefaultDisplay &&
 543             lyxrc.display_graphics == graphics::NoDisplay)
 544                 return RENDERBUTTON;
 545         return RENDERGRAPHIC;
 546 }
 547
 548
 549 graphics::Params get_grfx_params(InsetExternalParams const & eparams)
 550 {
 551         graphics::Params gparams;
 552
 553         gparams.filename = eparams.filename;
 554         gparams.scale = eparams.lyxscale;
 555         if (eparams.clipdata.clip)
 556                 gparams.bb = eparams.clipdata.bbox;
 557         gparams.angle = convert<double>(eparams.rotationdata.adjAngle());
 558
 559         switch (eparams.display) {
 560         case external::DefaultDisplay:
 561                 gparams.display = graphics::DefaultDisplay;
 562                 break;
 563         case external::MonochromeDisplay:
 564                 gparams.display = graphics::MonochromeDisplay;
 565                 break;
 566         case external::GrayscaleDisplay:
 567                 gparams.display = graphics::GrayscaleDisplay;
 568                 break;
 569         case external::ColorDisplay:
 570                 gparams.display = graphics::ColorDisplay;
 571                 break;
 572         case external::NoDisplay:
 573                 gparams.display = graphics::NoDisplay;
 574                 break;
 575         default:
 576                 BOOST_ASSERT(false);
 577         }
 578         if (gparams.display == graphics::DefaultDisplay)
 579                 gparams.display = graphics::DisplayType(lyxrc.display_graphics);
 580         // Override the above if we're not using a gui
 581         if (!use_gui)
 582                 gparams.display = graphics::NoDisplay;
 583
 584         return gparams;
 585 }
 586
 587
 588 docstring const getScreenLabel(InsetExternalParams const & params,
 589                             Buffer const & buffer)
 590 {
 591         external::Template const * const ptr =
 592                 external::getTemplatePtr(params);
 593         if (!ptr)
 594                 // FIXME UNICODE
 595                 return support::bformat((_("External template %1$s is not installed")),
 596                                         from_utf8(params.templatename()));
 597         // FIXME UNICODE
 598         docstring gui = _(ptr->guiName);
 599         return from_utf8(external::doSubstitution(params, buffer,
 600                                 to_utf8(gui), false));
 601 }
 602
 603 void add_preview_and_start_loading(RenderMonitoredPreview &,
 604                                    InsetExternal const &,
 605                                    Buffer const &);
 606
 607 } // namespace anon
 608
 609
 610 InsetExternalParams const & InsetExternal::params() const
 611 {
 612         return params_;
 613 }
 614
 615
 616 void InsetExternal::setParams(InsetExternalParams const & p,
 617                               Buffer const & buffer)
 618 {
 619         params_ = p;
 620
 621         // Subsequent calls to the InsetExternal::Params default constructor
 622         // will use this.
 623         defaultTemplateName = params_.templatename();
 624
 625         switch (getRenderType(params_)) {
 626         case RENDERBUTTON: {
 627                 RenderButton * button_ptr = renderer_->asButton();
 628                 if (!button_ptr) {
 629                         renderer_.reset(new RenderButton);
 630                         button_ptr = renderer_->asButton();
 631                 }
 632
 633                 button_ptr->update(getScreenLabel(params_, buffer), true);
 634                 break;
 635         }
 636
 637         case RENDERGRAPHIC: {
 638                 RenderGraphic * graphic_ptr = renderer_->asGraphic();
 639                 if (!graphic_ptr) {
 640                         renderer_.reset(new RenderGraphic(this));
 641                         graphic_ptr = renderer_->asGraphic();
 642                 }
 643
 644                 graphic_ptr->update(get_grfx_params(params_));
 645
 646                 break;
 647         }
 648
 649         case RENDERPREVIEW: {
 650                 RenderMonitoredPreview * preview_ptr =
 651                         renderer_->asMonitoredPreview();
 652                 if (!preview_ptr) {
 653                         renderer_.reset(new RenderMonitoredPreview(this));
 654                         preview_ptr = renderer_->asMonitoredPreview();
 655                         preview_ptr->fileChanged(
 656                                 boost::bind(&InsetExternal::fileChanged, this));
 657                 }
 658
 659                 if (preview_ptr->monitoring())
 660                         preview_ptr->stopMonitoring();
 661                 add_preview_and_start_loading(*preview_ptr, *this, buffer);
 662
 663                 break;
 664         }
 665         }
 666 }
 667
 668
 669 void InsetExternal::fileChanged() const
 670 {
 671         Buffer const * const buffer = updateFrontend();
 672         if (!buffer)
 673                 return;
 674
 675         RenderMonitoredPreview * const ptr = renderer_->asMonitoredPreview();
 676         BOOST_ASSERT(ptr);
 677
 678         ptr->removePreview(*buffer);
 679         add_preview_and_start_loading(*ptr, *this, *buffer);
 680 }
 681
 682
 683 void InsetExternal::write(Buffer const & buffer, ostream & os) const
 684 {
 685         params_.write(buffer, os);
 686 }
 687
 688
 689 void InsetExternal::read(Buffer const & buffer, Lexer & lex)
 690 {
 691         InsetExternalParams params;
 692         if (params.read(buffer, lex))
 693                 setParams(params, buffer);
 694 }
 695
 696
 697 int InsetExternal::latex(Buffer const & buf, odocstream & os,
 698                          OutputParams const & runparams) const
 699 {
 700         if (params_.draft) {
 701                 // FIXME UNICODE
 702                 os << "\\fbox{\\ttfamily{}"
 703                    << from_utf8(params_.filename.outputFilename(buf.filePath()))
 704                    << "}\n";
 705                 return 1;
 706         }
 707
 708         // "nice" means that the buffer is exported to LaTeX format but not
 709         // run through the LaTeX compiler.
 710         // If we're running through the LaTeX compiler, we should write the
 711         // generated files in the buffer's temporary directory.
 712         bool const external_in_tmpdir = !runparams.nice;
 713         bool const dryrun = runparams.dryrun || runparams.inComment;
 714
 715         // If the template has specified a PDFLaTeX output, then we try and
 716         // use that.
 717         if (runparams.flavor == OutputParams::PDFLATEX) {
 718                 external::Template const * const et_ptr =
 719                         external::getTemplatePtr(params_);
 720                 if (!et_ptr)
 721                         return 0;
 722                 external::Template const & et = *et_ptr;
 723
 724                 external::Template::Formats::const_iterator cit =
 725                         et.formats.find("PDFLaTeX");
 726
 727                 if (cit != et.formats.end()) {
 728                         return external::writeExternal(params_, "PDFLaTeX",
 729                                                        buf, os,
 730                                                        *(runparams.exportdata),
 731                                                        external_in_tmpdir,
 732                                                        dryrun);
 733                 }
 734         }
 735
 736         return external::writeExternal(params_, "LaTeX", buf, os,
 737                                        *(runparams.exportdata),
 738                                        external_in_tmpdir,
 739                                        dryrun);
 740 }
 741
 742
 743 int InsetExternal::plaintext(Buffer const & buf, odocstream & os,
 744                              OutputParams const & runparams) const
 745 {
 746         os << '\n'; // output external material on a new line
 747         external::writeExternal(params_, "Ascii", buf, os,
 748                                 *(runparams.exportdata), false,
 749                                 runparams.dryrun || runparams.inComment);
 750         return PLAINTEXT_NEWLINE;
 751 }
 752
 753
 754 int InsetExternal::docbook(Buffer const & buf, odocstream & os,
 755                            OutputParams const & runparams) const
 756 {
 757         return external::writeExternal(params_, "DocBook", buf, os,
 758                                        *(runparams.exportdata), false,
 759                                        runparams.dryrun || runparams.inComment);
 760 }
 761
 762
 763 void InsetExternal::validate(LaTeXFeatures & features) const
 764 {
 765         if (params_.draft)
 766                 return;
 767
 768         external::Template const * const et_ptr =
 769                 external::getTemplatePtr(params_);
 770         if (!et_ptr)
 771                 return;
 772         external::Template const & et = *et_ptr;
 773
 774         string format;
 775         switch (features.runparams().flavor) {
 776         case OutputParams::LATEX:
 777                 format = "LaTeX";
 778                 break;
 779         case OutputParams::PDFLATEX:
 780                 format = "PDFLaTeX";
 781                 break;
 782         case OutputParams::XML:
 783                 format = "DocBook";
 784                 break;
 785         }
 786         external::Template::Formats::const_iterator cit =
 787                 et.formats.find(format);
 788         if (cit == et.formats.end())
 789                 return;
 790
 791         // FIXME: We don't need that always
 792         features.require("lyxdot");
 793
 794         vector<string>::const_iterator it  = cit->second.requirements.begin();
 795         vector<string>::const_iterator end = cit->second.requirements.end();
 796         for (; it != end; ++it)
 797                 features.require(*it);
 798
 799         external::TemplateManager & etm = external::TemplateManager::get();
 800
 801         it  = cit->second.preambleNames.begin();
 802         end = cit->second.preambleNames.end();
 803         for (; it != end; ++it) {
 804                 string const preamble = etm.getPreambleDefByName(*it);
 805                 if (!preamble.empty())
 806                         features.addPreambleSnippet(preamble);
 807         }
 808 }
 809
 810
 811 //
 812 // preview stuff
 813 //
 814
 815 namespace {
 816
 817 bool preview_wanted(InsetExternalParams const & params)
 818 {
 819         return params.display == external::PreviewDisplay &&
 820                 params.filename.isReadableFile();
 821 }
 822
 823
 824 docstring const latex_string(InsetExternal const & inset, Buffer const & buffer)
 825 {
 826         odocstringstream os;
 827         // We don't need to set runparams.encoding since it is not used by
 828         // latex().
 829         OutputParams runparams(0);
 830         runparams.flavor = OutputParams::LATEX;
 831         inset.latex(buffer, os, runparams);
 832         return os.str();
 833 }
 834
 835
 836 void add_preview_and_start_loading(RenderMonitoredPreview & renderer,
 837                                    InsetExternal const & inset,
 838                                    Buffer const & buffer)
 839 {
 840         InsetExternalParams const & params = inset.params();
 841
 842         if (RenderPreview::status() != LyXRC::PREVIEW_OFF &&
 843             preview_wanted(params)) {
 844                 renderer.setAbsFile(params.filename);
 845                 docstring const snippet = latex_string(inset, buffer);
 846                 renderer.addPreview(snippet, buffer);
 847                 renderer.startLoading(buffer);
 848         }
 849 }
 850
 851 } // namespace anon
 852
 853
 854 void InsetExternal::addPreview(graphics::PreviewLoader & ploader) const
 855 {
 856         RenderMonitoredPreview * const ptr = renderer_->asMonitoredPreview();
 857         if (!ptr)
 858                 return;
 859
 860         if (preview_wanted(params())) {
 861                 ptr->setAbsFile(params_.filename);
 862                 docstring const snippet = latex_string(*this, ploader.buffer());
 863                 ptr->addPreview(snippet, ploader);
 864         }
 865 }
 866
 867
 868 /// Mailer stuff
 869
 870 string const InsetExternalMailer::name_("external");
 871
 872 InsetExternalMailer::InsetExternalMailer(InsetExternal & inset)
 873         : inset_(inset)
 874 {}
 875
 876
 877 string const InsetExternalMailer::inset2string(Buffer const & buffer) const
 878 {
 879         return params2string(inset_.params(), buffer);
 880 }
 881
 882
 883 void InsetExternalMailer::string2params(string const & in,
 884                                         Buffer const & buffer,
 885                                         InsetExternalParams & params)
 886 {
 887         params = InsetExternalParams();
 888         if (in.empty())
 889                 return;
 890
 891         istringstream data(in);
 892         Lexer lex(0,0);
 893         lex.setStream(data);
 894
 895         string name;
 896         lex >> name;
 897         if (!lex || name != name_)
 898                 return print_mailer_error("InsetExternalMailer", in, 1, name_);
 899
 900         // This is part of the inset proper that is usually swallowed
 901         // by Text::readInset
 902         string id;
 903         lex >> id;
 904         if (!lex || id != "External")
 905                 return print_mailer_error("InsetBoxMailer", in, 2, "External");
 906
 907         params.read(buffer, lex);
 908 }
 909
 910
 911 string const
 912 InsetExternalMailer::params2string(InsetExternalParams const & params,
 913                                    Buffer const & buffer)
 914 {
 915         ostringstream data;
 916         data << name_ << ' ';
 917         params.write(buffer, data);
 918         data << "\\end_inset\n";
 919         return data.str();
 920 }
 921
 922 } // namespace lyx