1 /* This file is part of
2 * ======================================================
4 * LyX, The Document Processor
6 * Copyright 1995-2002 the LyX Team.
9 * \author Herbert Voss <voss@lyx.org>
10 * ====================================================== */
15 * If the image is from the clipart, and the document is moved to another
16 directory, the user is screwed. Need a way to handle it.
17 This amounts to a problem of when to use relative or absolute file paths
18 We should probably use what the user asks to use... but when he chooses
19 by the file dialog we normally get an absolute path and this may not be
21 [Note that browseRelFile in helper_funcs.* provides a file name
22 which is relative if it is at reference path (here puffer path)
23 level or below, and an absolute path if the file name is not a
24 `natural' relative file name. In any case,
25 MakeAbsPath(filename, buf->filePath())
26 is guaranteed to provide the correct absolute path. This is what is
27 done know for include insets. Feel free to ask me -- JMarc
30 * If we are trying to create a file in a read-only directory and there
31 are graphics that need converting, the converting will fail because
32 it is done in-place, into the same directory as the original image.
33 This needs to be fixed in the src/converter.C file
34 [ This is presumed to be fixed, needs testing.]
36 * We do not dither or resize the image in a WYSIWYM way, we load it at
37 its original size and color, resizing is done in the final output,
38 but not in the LyX window.
40 * EPS figures are not fully detected, they may have a lot of possible
41 suffixes so we need to read the file and detect if it's EPS or not.
42 [Implemented, need testing]
44 TODO Before initial production release:
45 * Replace insetfig everywhere
46 * Search for comments of the form
47 // INSET_GRAPHICS: remove this when InsetFig is thrown.
48 And act upon them. Make sure not to remove InsetFig code for the
49 1.2.0 release, only afterwards, after deployment shows InsetGraphics
51 * What advanced features the users want to do?
52 Implement them in a non latex dependent way, but a logical way.
53 LyX should translate it to latex or any other fitting format.
54 * Add a way to roll the image file into the file format.
55 * When loading, if the image is not found in the expected place, try
56 to find it in the clipart, or in the same directory with the image.
57 * Keep a tab on the image file, if it changes, update the lyx view.
58 * The image choosing dialog could show thumbnails of the image formats
59 it knows of, thus selection based on the image instead of based on
61 * Add support for the 'picins' package.
62 * Add support for the 'picinpar' package.
63 * Improve support for 'subfigure' - Allow to set the various options
69 * Current version is 1 (inset file format version), when changing it
70 * it should be changed in the Write() function when writing in one place
71 * and when reading one should change the version check and the error message.
72 * The filename is kept in the lyx file in a relative way, so as to allow
73 * moving the document file and its images with no problem.
77 * Postscript output means EPS figures.
79 * PDF output is best done with PDF figures if it's a direct conversion
80 * or PNG figures otherwise.
92 #pragma implementation
95 #include "insets/insetgraphics.h"
96 #include "insets/insetgraphicsParams.h"
97 #include "graphics/GraphicsCache.h"
98 #include "graphics/GraphicsCacheItem.h"
100 #include "frontends/Dialogs.h"
103 #include "BufferView.h"
104 #include "converter.h"
105 #include "frontends/support/LyXImage.h"
107 #include "lyx_gui_misc.h"
108 #include "support/FileInfo.h"
109 #include "support/filetools.h"
110 #include "frontends/controllers/helper_funcs.h"
111 #include "support/lyxlib.h"
114 #include "font.h" // For the lyxfont class.
115 #include "fstream" // for ifstream in isEPS
116 #include <algorithm> // For the std::max
117 #include "support/lyxmanip.h"
121 extern string system_tempdir;
127 ///////////////////////////////////////////////////////////////////////////
128 int VersionNumber = 1;
129 ///////////////////////////////////////////////////////////////////////////
131 // This function is a utility function
132 // ... that should be with ChangeExtension ...
134 string const RemoveExtension(string const & filename)
136 return ChangeExtension(filename, string());
140 // Initialize only those variables that do not have a constructor.
141 InsetGraphics::InsetGraphics()
142 : cacheHandle(0), imageLoaded(false)
146 InsetGraphics::InsetGraphics(InsetGraphics const & ig, bool same_id)
147 : Inset(), SigC::Object()
148 , cacheHandle(ig.cacheHandle)
149 , imageLoaded(ig.imageLoaded)
151 setParams(ig.getParams());
157 InsetGraphics::~InsetGraphics()
159 // Emits the hide signal to the dialog connected (if any)
165 InsetGraphics::statusMessage() const
168 if (cacheHandle.get()) {
169 switch (cacheHandle->getImageStatus()) {
170 case GraphicsCacheItem::UnknownError:
171 msg = _("Unknown Error");
173 case GraphicsCacheItem::Loading:
174 msg = _("Loading...");
176 case GraphicsCacheItem::ErrorReading:
177 msg = _("Error reading");
179 case GraphicsCacheItem::Converting:
180 msg = _("Converting Image");
182 case GraphicsCacheItem::ErrorConverting:
183 msg = _("Error converting");
185 case GraphicsCacheItem::Loaded:
186 // No message to write.
194 int InsetGraphics::ascent(BufferView *, LyXFont const &) const
196 LyXImage * pixmap = 0;
197 if (cacheHandle.get() && (pixmap = cacheHandle->getImage()))
198 return pixmap->getHeight();
204 int InsetGraphics::descent(BufferView *, LyXFont const &) const
206 // this is not true if viewport is used and clip is not.
211 int InsetGraphics::width(BufferView *, LyXFont const & font) const
213 LyXImage * pixmap = 0;
215 if (cacheHandle.get() && (pixmap = cacheHandle->getImage()))
216 return pixmap->getWidth();
220 LyXFont msgFont(font);
221 msgFont.setFamily(LyXFont::SANS_FAMILY);
223 string const justname = OnlyFilename (params.filename);
224 if (!justname.empty()) {
225 msgFont.setSize(LyXFont::SIZE_FOOTNOTE);
226 font_width = lyxfont::width(justname, msgFont);
229 string const msg = statusMessage();
231 msgFont.setSize(LyXFont::SIZE_TINY);
232 int const msg_width = lyxfont::width(msg, msgFont);
233 font_width = std::max(font_width, msg_width);
236 return std::max(50, font_width + 15);
241 void InsetGraphics::draw(BufferView * bv, LyXFont const & font,
242 int baseline, float & x, bool) const
244 Painter & paint = bv->painter();
246 int ldescent = descent(bv, font);
247 int lascent = ascent(bv, font);
248 int lwidth = width(bv, font);
250 // Make sure x is updated upon exit from this routine
254 // This will draw the graphics. If the graphics has not been loaded yet,
255 // we draw just a rectangle.
258 paint.image(old_x + 2, baseline - lascent,
259 lwidth - 4, lascent + ldescent,
260 cacheHandle->getImage());
263 // Get the image status, default to unknown error.
264 GraphicsCacheItem::ImageStatus status = GraphicsCacheItem::UnknownError;
265 if (lyxrc.display_graphics != "no" && lyxrc.use_gui
266 && params.display != InsetGraphicsParams::NONE &&
268 status = cacheHandle->getImageStatus();
270 // Check if the image is now ready.
271 if (status == GraphicsCacheItem::Loaded) {
274 // Tell BufferView we need to be updated!
275 bv->text->status(bv, LyXText::CHANGED_IN_DRAW);
279 paint.rectangle(old_x + 2, baseline - lascent,
283 // Print the file name.
284 LyXFont msgFont(font);
285 msgFont.setFamily(LyXFont::SANS_FAMILY);
287 string const justname = OnlyFilename (params.filename);
288 if (!justname.empty()) {
289 msgFont.setSize(LyXFont::SIZE_FOOTNOTE);
290 paint.text(old_x + 8,
291 baseline - lyxfont::maxAscent(msgFont) - 4,
295 // Print the message.
296 string const msg = statusMessage();
298 msgFont.setSize(LyXFont::SIZE_TINY);
299 paint.text(old_x + 8, baseline - 4, msg, msgFont);
305 void InsetGraphics::edit(BufferView *bv, int, int, unsigned int)
307 bv->owner()->getDialogs()->showGraphics(this);
311 void InsetGraphics::edit(BufferView * bv, bool)
317 Inset::EDITABLE InsetGraphics::editable() const
323 void InsetGraphics::write(Buffer const * buf, ostream & os) const
325 os << "Graphics FormatVersion " << VersionNumber << '\n';
326 params.Write(buf, os);
330 void InsetGraphics::read(Buffer const * buf, LyXLex & lex)
332 string const token = lex.getString();
334 if (token == "Graphics")
335 readInsetGraphics(buf, lex);
336 else if (token == "Figure") // Compatibility reading of FigInset figures.
337 readFigInset(buf, lex);
339 lyxerr[Debug::INFO] << "Not a Graphics or Figure inset!\n";
344 void InsetGraphics::readInsetGraphics(Buffer const * buf, LyXLex & lex)
346 bool finished = false;
348 while (lex.isOK() && !finished) {
351 string const token = lex.getString();
352 lyxerr[Debug::INFO] << "Token: '" << token << '\''
357 } else if (token == "\\end_inset") {
359 } else if (token == "FormatVersion") {
361 int version = lex.getInteger();
362 if (version > VersionNumber)
364 << "This document was created with a newer Graphics widget"
365 ", You should use a newer version of LyX to read this"
368 // TODO: Possibly open up a dialog?
371 if (! params.Read(buf, lex, token))
372 lyxerr << "Unknown token, " << token << ", skipping."
379 void InsetGraphics::readFigInset(Buffer const * buf, LyXLex & lex)
381 std::vector<string> const oldUnits =
382 getVectorFromString("pt,cm,in,p%,c%");
383 bool finished = false;
385 while (lex.isOK() && !finished) {
388 string const token = lex.getString();
389 lyxerr[Debug::INFO] << "Token: " << token << endl;
393 else if (token == "\\end_inset") {
395 } else if (token == "file") {
397 string const name = lex.getString();
398 string const path = buf->filePath();
399 params.filename = MakeAbsPath(name, path);
401 } else if (token == "extra") {
403 // kept for backwards compability. Delete in 0.13.x
404 } else if (token == "subcaption") {
406 params.subcaptionText = lex.getString();
407 params.subcaption = true;
408 } else if (token == "label") {
410 // kept for backwards compability. Delete in 0.13.x
411 } else if (token == "angle") {
413 params.rotateAngle = lex.getFloat();
414 } else if (token == "size") {
416 params.lyxwidth = LyXLength(lex.getString()+"pt");
418 params.lyxheight = LyXLength(lex.getString()+"pt");
419 } else if (token == "flags") {
420 InsetGraphicsParams::DisplayType tmp = InsetGraphicsParams::COLOR;
422 switch (lex.getInteger()) {
423 case 1: tmp = InsetGraphicsParams::MONOCHROME; break;
424 case 2: tmp = InsetGraphicsParams::GRAYSCALE; break;
426 params.display = tmp;
427 } else if (token == "subfigure") {
428 params.subcaption = true;
429 } else if (token == "width") {
431 int i = lex.getInteger();
434 params.scale = lex.getInteger();
435 params.size_type = InsetGraphicsParams::SCALE;
437 params.width = LyXLength(lex.getString()+oldUnits[i]);
438 params.size_type = InsetGraphicsParams::WH;
442 } else if (token == "height") {
444 int i = lex.getInteger();
446 params.height = LyXLength(lex.getString()+oldUnits[i]);
447 params.size_type = InsetGraphicsParams::WH;
454 string const InsetGraphics::createLatexOptions() const
456 // Calculate the options part of the command, we must do it to a string
457 // stream since we might have a trailing comma that we would like to remove
458 // before writing it to the output stream.
459 ostringstream options;
460 if (!params.bb.empty())
461 options << "bb=" << strip(params.bb) << ',';
463 options << "%\n draft,";
465 options << "%\n clip,";
466 if (params.size_type == InsetGraphicsParams::WH) {
467 if (!params.width.zero())
468 options << "%\n width=" << params.width.asLatexString() << ',';
469 if (!params.height.zero())
470 options << "%\n height=" << params.height.asLatexString() << ',';
471 } else if (params.size_type == InsetGraphicsParams::SCALE) {
472 if (params.scale > 0)
473 options << "%\n scale=" << double(params.scale)/100.0 << ',';
475 if (params.keepAspectRatio)
476 options << "%\n keepaspectratio,";
477 // Make sure it's not very close to zero, a float can be effectively
478 // zero but not exactly zero.
479 if (!lyx::float_equal(params.rotateAngle, 0, 0.001)) {
480 options << "%\n angle=" << params.rotateAngle << ',';
481 if (!params.rotateOrigin.empty()) {
482 options << "%\n origin=";
483 options << params.rotateOrigin[0];
484 if (contains(params.rotateOrigin,"Top"))
486 else if (contains(params.rotateOrigin,"Bottom"))
488 else if (contains(params.rotateOrigin,"Baseline"))
493 if (!params.special.empty())
494 options << params.special << ',';
495 string opts = options.str().c_str();
496 opts = strip(opts, ',');
511 bool isEPS(string const & filename)
513 if (filename.empty() || !IsFileReadable(filename)) return false;
515 ifstream ifs(filename.c_str());
517 if (!ifs) return false; // Couldn't open file...
519 bool is_eps = false; // Have we recognized the file as EPS?
520 string to_find = "%!PS-Adobe-"; // The string we use to recognize
521 int const max_attempts = 500; // Maximum strings to read to attempt recognition
522 int count = 0; // Counter of attempts.
524 for (; count < max_attempts; ++count) {
526 lyxerr[Debug::INFO] << "InsetGraphics (isEPS)"
527 " End of file reached and it wasn't found to be EPS!" << endl;
532 if (str.find(to_find)) {
541 enum FileType classifyFileType(string const & filename, string const & suffix)
545 else if (suffix == "jpg" || suffix == "jpeg")
547 else if (suffix == "gif")
549 else if (suffix == "pdf")
551 else if (isEPS(filename))
557 string decideOutputImageFormat(string const & suffix, enum FileType type)
559 // lyxrc.pdf_mode means:
560 // Are we creating a PDF or a PS file?
561 // (Should actually mean, are we using latex or pdflatex).
562 if (lyxrc.pdf_mode) {
563 if (type == EPS || type == EPS || type == PDF)
565 else if (type == JPEG)
571 // If it's postscript, we always do eps.
572 // There are many suffixes that are actually EPS (ask Garst for example)
573 // so we detect if it's an EPS by looking in the file, if it is, we return
574 // the same suffix of the file so it won't be converted.
583 string const InsetGraphics::prepareFile(Buffer const *buf) const
585 // do_convert = Do we need to convert the file?
586 // nice = Do we create a nice version?
587 // This is used when exporting the latex file only.
590 // return original filename
593 // convert_place = temp directory
594 // return new filename in temp directory
596 // convert_place = original file directory
597 // return original filename without the extension
600 // Get the extension (format) of the original file.
601 string const extension = GetExtension(params.filename);
602 FileType type = classifyFileType(params.filename, extension);
604 // Are we creating a PDF or a PS file?
605 // (Should actually mean, are we usind latex or pdflatex).
606 string const image_target = decideOutputImageFormat(extension, type);
608 if (extension == image_target)
609 return params.filename;
612 if (!buf->niceFile) {
613 string const temp = AddName(buf->tmppath, params.filename);
614 outfile = RemoveExtension(temp);
616 //lyxerr << "buf::tmppath = " << buf->tmppath << "\n";
617 //lyxerr << "filename = " << params.filename << "\n";
618 //lyxerr << "temp = " << temp << "\n";
619 //lyxerr << "outfile = " << outfile << endl;
621 string const path = buf->filePath();
622 string const relname = MakeRelPath(params.filename, path);
623 outfile = RemoveExtension(relname);
625 converters.convert(buf, params.filename, outfile, extension, image_target);
630 int InsetGraphics::latex(Buffer const *buf, ostream & os,
631 bool /*fragile*/, bool/*fs*/) const
633 // If there is no file specified, just output a message about it in
635 if (params.filename.empty()) {
636 os << "\\fbox{\\rule[-0.5in]{0pt}{1in}"
637 << _("empty figure path") << "}\n";
638 return 1; // One end of line marker added to the stream.
640 // Keep count of newlines that we issued.
642 // This variables collect all the latex code that should be before and
643 // after the actual includegraphics command.
646 // Do we want subcaptions?
647 if (params.subcaption) {
648 before += "\\subfigure[" + params.subcaptionText + "]{";
651 // We never use the starred form, we use the "clip" option instead.
652 os << before << "\\includegraphics";
653 // Write the options if there are any.
654 string const opts = createLatexOptions();
656 os << "[%\n " << opts << ']';
658 // Make the filename relative to the lyx file
659 // and remove the extension so the LaTeX will use whatever is
660 // appropriate (when there are several versions in different formats)
661 string const filename = prepareFile(buf);
662 os << '{' << filename << '}' << after;
663 // Return how many newlines we issued.
668 int InsetGraphics::ascii(Buffer const *, ostream &, int) const
670 // No graphics in ascii output. Possible to use gifscii to convert
671 // images to ascii approximation.
673 // 1. Convert file to ascii using gifscii
674 // 2. Read ascii output file and add it to the output stream.
680 int InsetGraphics::linuxdoc(Buffer const *, ostream &) const
682 // No graphics in LinuxDoc output. Should check how/what to add.
687 // For explanation on inserting graphics into DocBook checkout:
688 // http://linuxdoc.org/LDP/LDP-Author-Guide/inserting-pictures.html
689 // See also the docbook guide at http://www.docbook.org/
690 int InsetGraphics::docbook(Buffer const * buf, ostream & os) const
692 // Change the path to be relative to the main file.
693 string const buffer_dir = buf->filePath();
694 string filename = RemoveExtension(
695 MakeRelPath(params.filename, buffer_dir));
697 if (suffixIs(filename, ".eps"))
698 filename.erase(filename.length() - 4);
700 // In DocBook v5.0, the graphic tag will be eliminated from DocBook, will
701 // need to switch to MediaObject. However, for now this is sufficient and
703 os << "<graphic fileref=\"" << filename << "\"></graphic>";
708 void InsetGraphics::validate(LaTeXFeatures & features) const
710 // If we have no image, we should not require anything.
711 if (params.filename.empty())
714 features.require("graphicx");
716 if (params.subcaption)
717 features.require("subfigure");
721 // Update the inset after parameters changed (read from file or changed in
723 void InsetGraphics::updateInset() const
725 GraphicsCache & gc = GraphicsCache::getInstance();
726 boost::shared_ptr<GraphicsCacheItem> temp(0);
728 // We do it this way so that in the face of some error, we will still
729 // be in a valid state.
730 if (!params.filename.empty() && lyxrc.use_gui
731 && lyxrc.display_graphics != "no"
732 && params.display != InsetGraphicsParams::NONE) {
733 temp = gc.addFile(params.filename);
736 // Mark the image as unloaded so that it gets updated.
743 bool InsetGraphics::setParams(InsetGraphicsParams const & p)
745 // If nothing is changed, just return and say so.
749 // Copy the new parameters.
752 // Update the inset with the new parameters.
755 // We have changed data, report it.
760 InsetGraphicsParams InsetGraphics::getParams() const
766 Inset * InsetGraphics::clone(Buffer const &, bool same_id) const
768 return new InsetGraphics(*this, same_id);