Mercurial > octave
view libinterp/corefcn/latex-text-renderer.cc @ 31771:21f9b34eb893
maint: Eliminate "(void)" in C++ function prototypes/declarations.
* mk-opts.pl, external.txi, embedded.cc, make_int.cc, standalone.cc,
standalonebuiltin.cc, BaseControl.cc, BaseControl.h, ButtonControl.cc,
ButtonControl.h, ButtonGroup.cc, ButtonGroup.h, Canvas.cc, Canvas.h,
CheckBoxControl.cc, CheckBoxControl.h, Container.cc, Container.h,
ContextMenu.cc, ContextMenu.h, EditControl.cc, EditControl.h, Figure.cc,
Figure.h, FigureWindow.cc, FigureWindow.h, GLCanvas.cc, GLCanvas.h,
GenericEventNotify.h, KeyMap.cc, ListBoxControl.cc, ListBoxControl.h,
Logger.cc, Logger.h, Menu.cc, Menu.h, MenuContainer.h, Object.cc, Object.h,
ObjectProxy.cc, ObjectProxy.h, Panel.cc, Panel.h, PopupMenuControl.cc,
PopupMenuControl.h, PushButtonControl.cc, PushButtonControl.h, PushTool.cc,
PushTool.h, RadioButtonControl.cc, RadioButtonControl.h, SliderControl.cc,
SliderControl.h, Table.cc, Table.h, TextControl.cc, TextControl.h, TextEdit.h,
ToggleButtonControl.cc, ToggleButtonControl.h, ToggleTool.cc, ToggleTool.h,
ToolBar.cc, ToolBar.h, ToolBarButton.cc, ToolBarButton.h, gl-select.cc,
gl-select.h, qopengl-functions.h, qt-graphics-toolkit.h, qdialog.cpp,
qfontdialog.cpp, qprintdialog_win.cpp, liboctgui-build-info.h,
liboctgui-build-info.in.cc, color-picker.cc, color-picker.h, command-widget.cc,
command-widget.h, community-news.cc, community-news.h, dialog.cc, dialog.h,
documentation-bookmarks.cc, documentation-bookmarks.h,
documentation-dock-widget.cc, documentation-dock-widget.h, documentation.cc,
documentation.h, dw-main-window.cc, dw-main-window.h,
external-editor-interface.cc, external-editor-interface.h,
files-dock-widget.cc, files-dock-widget.h, find-files-dialog.cc,
find-files-dialog.h, find-files-model.cc, find-files-model.h,
gui-preferences.cc, gui-preferences.h, gui-settings.cc, gui-settings.h,
history-dock-widget.cc, history-dock-widget.h, interpreter-qobject.cc,
interpreter-qobject.h, file-editor-interface.h, file-editor-tab.cc,
file-editor-tab.h, file-editor.cc, file-editor.h, find-dialog.cc,
find-dialog.h, marker.cc, marker.h, octave-qscintilla.cc, octave-qscintilla.h,
octave-txt-lexer.cc, octave-txt-lexer.h, main-window.cc, main-window.h,
news-reader.cc, news-reader.h, octave-dock-widget.cc, octave-dock-widget.h,
octave-qobject.cc, octave-qobject.h, qt-application.cc, qt-application.h,
qt-interpreter-events.cc, qt-interpreter-events.h, release-notes.cc,
release-notes.h, set-path-dialog.cc, set-path-dialog.h, set-path-model.cc,
set-path-model.h, settings-dialog.cc, settings-dialog.h,
shortcuts-tree-widget.cc, shortcuts-tree-widget.h, tab-bar.cc, tab-bar.h,
terminal-dock-widget.cc, terminal-dock-widget.h, variable-editor-model.cc,
variable-editor-model.h, variable-editor.cc, variable-editor.h,
welcome-wizard.cc, welcome-wizard.h, workspace-model.cc, workspace-model.h,
workspace-view.cc, workspace-view.h, build-env.h, Cell.cc, Cell.h,
__contourc__.cc, __magick_read__.cc, auto-shlib.cc, auto-shlib.h,
base-text-renderer.h, bsxfun.cc, c-file-ptr-stream.cc, c-file-ptr-stream.h,
call-stack.cc, call-stack.h, debug.cc, defaults.cc, defaults.h, defun.cc,
display.cc, display.h, dynamic-ld.cc, dynamic-ld.h, environment.cc,
environment.h, error.cc, error.h, errwarn.cc, errwarn.h, event-manager.cc,
event-manager.h, event-queue.cc, event-queue.h, fcn-info.cc, fcn-info.h,
ft-text-renderer.cc, ft-text-renderer.h, genprops.awk, gh-manager.cc,
gh-manager.h, gl-render.cc, gl-render.h, gl2ps-print.cc, graphics-toolkit.h,
graphics.cc, graphics.in.h, gtk-manager.cc, gtk-manager.h, help.cc, help.h,
hook-fcn.h, input.cc, input.h, interpreter-private.cc, interpreter-private.h,
interpreter.cc, interpreter.h, jsondecode.cc, latex-text-renderer.cc,
latex-text-renderer.h, load-path.cc, load-path.h, load-save.cc, load-save.h,
ls-hdf5.cc, ls-hdf5.h, mxarray.h, oct-errno.h, oct-errno.in.cc, oct-fstrm.cc,
oct-fstrm.h, oct-handle.h, oct-hist.cc, oct-hist.h, oct-iostrm.cc,
oct-iostrm.h, oct-map.cc, oct-map.h, oct-opengl.h, oct-prcstrm.cc,
oct-prcstrm.h, oct-procbuf.cc, oct-procbuf.h, oct-process.h, oct-stdstrm.h,
oct-stream.cc, oct-stream.h, oct-strstrm.cc, oct-strstrm.h,
oct-tex-lexer.in.ll, pager.cc, pager.h, pr-flt-fmt.cc, pr-flt-fmt.h,
pr-output.cc, pr-output.h, procstream.cc, procstream.h, settings.cc,
settings.h, sighandlers.cc, sighandlers.h, stack-frame.cc, stack-frame.h,
svd.cc, syminfo.cc, syminfo.h, symrec.cc, symrec.h, symscope.cc, symscope.h,
symtab.cc, symtab.h, sysdep.cc, sysdep.h, text-engine.cc, text-engine.h,
text-renderer.cc, text-renderer.h, toplev.cc, url-handle-manager.cc,
url-handle-manager.h, variables.cc, xpow.cc, __init_fltk__.cc,
__init_gnuplot__.cc, __ode15__.cc, audiodevinfo.cc, gzip.cc,
liboctinterp-build-info.h, liboctinterp-build-info.in.cc,
mk-build-env-features.sh, mk-builtins.pl, cdef-class.cc, cdef-class.h,
cdef-manager.h, cdef-method.cc, cdef-method.h, cdef-object.cc, cdef-object.h,
cdef-package.cc, cdef-package.h, cdef-property.cc, cdef-property.h,
cdef-utils.cc, cdef-utils.h, ov-base-diag.cc, ov-base-diag.h, ov-base-int.cc,
ov-base-int.h, ov-base-mat.cc, ov-base-mat.h, ov-base-scalar.cc,
ov-base-scalar.h, ov-base-sparse.cc, ov-base-sparse.h, ov-base.cc, ov-base.h,
ov-bool-mat.cc, ov-bool-mat.h, ov-bool-sparse.cc, ov-bool-sparse.h, ov-bool.cc,
ov-bool.h, ov-builtin.cc, ov-builtin.h, ov-cell.cc, ov-cell.h, ov-ch-mat.cc,
ov-ch-mat.h, ov-class.cc, ov-class.h, ov-classdef.cc, ov-classdef.h,
ov-colon.h, ov-complex.cc, ov-complex.h, ov-cs-list.h, ov-cx-diag.cc,
ov-cx-diag.h, ov-cx-mat.cc, ov-cx-mat.h, ov-cx-sparse.cc, ov-cx-sparse.h,
ov-dld-fcn.cc, ov-dld-fcn.h, ov-fcn-handle.cc, ov-fcn-handle.h, ov-fcn.cc,
ov-fcn.h, ov-float.cc, ov-float.h, ov-flt-complex.cc, ov-flt-complex.h,
ov-flt-cx-diag.cc, ov-flt-cx-diag.h, ov-flt-cx-mat.cc, ov-flt-cx-mat.h,
ov-flt-re-diag.cc, ov-flt-re-diag.h, ov-flt-re-mat.cc, ov-flt-re-mat.h,
ov-intx.h, ov-java.cc, ov-java.h, ov-lazy-idx.cc, ov-lazy-idx.h,
ov-legacy-range.cc, ov-legacy-range.h, ov-magic-int.cc, ov-magic-int.h,
ov-mex-fcn.cc, ov-mex-fcn.h, ov-null-mat.cc, ov-null-mat.h, ov-oncleanup.cc,
ov-oncleanup.h, ov-perm.cc, ov-perm.h, ov-range.cc, ov-range.h, ov-re-diag.cc,
ov-re-diag.h, ov-re-mat.cc, ov-re-mat.h, ov-re-sparse.cc, ov-re-sparse.h,
ov-scalar.cc, ov-scalar.h, ov-str-mat.cc, ov-str-mat.h, ov-struct.cc,
ov-struct.h, ov-typeinfo.cc, ov-typeinfo.h, ov-usr-fcn.cc, ov-usr-fcn.h, ov.cc,
ov.h, ovl.cc, ovl.h, octave.cc, octave.h, anon-fcn-validator.h, bp-table.cc,
bp-table.h, comment-list.cc, comment-list.h, filepos.h, lex.h, lex.ll,
oct-lvalue.cc, oct-lvalue.h, oct-parse.yy, parse.h, profiler.cc, profiler.h,
pt-anon-scopes.h, pt-arg-list.cc, pt-arg-list.h, pt-args-block.cc,
pt-args-block.h, pt-array-list.cc, pt-array-list.h, pt-assign.cc, pt-assign.h,
pt-binop.cc, pt-binop.h, pt-bp.h, pt-cbinop.h, pt-cell.h, pt-check.h,
pt-classdef.cc, pt-classdef.h, pt-cmd.h, pt-colon.h, pt-const.h, pt-decl.cc,
pt-decl.h, pt-eval.cc, pt-eval.h, pt-except.cc, pt-except.h, pt-exp.cc,
pt-exp.h, pt-fcn-handle.cc, pt-fcn-handle.h, pt-id.cc, pt-id.h, pt-idx.cc,
pt-idx.h, pt-jump.h, pt-loop.cc, pt-loop.h, pt-mat.h, pt-misc.cc, pt-misc.h,
pt-pr-code.cc, pt-pr-code.h, pt-select.cc, pt-select.h, pt-spmd.cc, pt-spmd.h,
pt-stmt.cc, pt-stmt.h, pt-tm-const.cc, pt-tm-const.h, pt-unop.cc, pt-unop.h,
pt-walk.h, pt.cc, pt.h, token.cc, token.h, usage.h, Array-base.cc, Array.h,
CColVector.cc, CColVector.h, CDiagMatrix.cc, CDiagMatrix.h, CMatrix.cc,
CMatrix.h, CNDArray.cc, CNDArray.h, CRowVector.cc, CRowVector.h, CSparse.cc,
CSparse.h, DiagArray2.cc, DiagArray2.h, MArray.cc, MArray.h, MDiagArray2.h,
MSparse.h, MatrixType.cc, MatrixType.h, PermMatrix.cc, PermMatrix.h, Range.cc,
Range.h, Sparse-b.cc, Sparse.cc, Sparse.h, boolMatrix.cc, boolMatrix.h,
boolNDArray.cc, boolNDArray.h, boolSparse.cc, boolSparse.h, chMatrix.h,
chNDArray.h, dColVector.cc, dColVector.h, dDiagMatrix.cc, dDiagMatrix.h,
dMatrix.cc, dMatrix.h, dNDArray.cc, dNDArray.h, dRowVector.cc, dRowVector.h,
dSparse.cc, dSparse.h, dim-vector.cc, dim-vector.h, fCColVector.cc,
fCColVector.h, fCDiagMatrix.cc, fCDiagMatrix.h, fCMatrix.cc, fCMatrix.h,
fCNDArray.cc, fCNDArray.h, fCRowVector.cc, fCRowVector.h, fColVector.cc,
fColVector.h, fDiagMatrix.cc, fDiagMatrix.h, fMatrix.cc, fMatrix.h,
fNDArray.cc, fNDArray.h, fRowVector.cc, fRowVector.h, idx-vector.cc,
idx-vector.h, intNDArray.cc, intNDArray.h, liboctave-build-info.h,
liboctave-build-info.in.cc, CollocWt.cc, CollocWt.h, DAE.h, DAEFunc.h, DAERT.h,
DAERTFunc.h, DASPK.cc, DASPK.h, DASRT.cc, DASRT.h, DASSL.cc, DASSL.h, DET.h,
EIG.h, LSODE.cc, LSODE.h, ODE.h, ODEFunc.h, ODES.h, ODESFunc.h, Quad.h,
aepbalance.cc, aepbalance.h, base-dae.h, base-de.h, chol.cc, chol.h,
eigs-base.cc, fEIG.h, gepbalance.h, gsvd.cc, gsvd.h, hess.h, lu.cc, lu.h,
oct-fftw.cc, oct-fftw.h, oct-rand.cc, oct-rand.h, oct-spparms.cc,
oct-spparms.h, qr.cc, qr.h, qrp.cc, qrp.h, randmtzig.cc, randmtzig.h, schur.h,
sparse-chol.cc, sparse-chol.h, sparse-lu.cc, sparse-lu.h, sparse-qr.cc,
sparse-qr.h, svd.cc, svd.h, child-list.cc, child-list.h, dir-ops.cc, dir-ops.h,
file-ops.cc, file-ops.h, file-stat.cc, file-stat.h, lo-sysdep.cc, lo-sysdep.h,
lo-sysinfo.cc, lo-sysinfo.h, mach-info.cc, mach-info.h, oct-env.cc, oct-env.h,
oct-group.cc, oct-group.h, oct-password.cc, oct-password.h, oct-syscalls.cc,
oct-syscalls.h, oct-time.cc, oct-time.h, oct-uname.cc, oct-uname.h,
action-container.h, base-list.h, caseless-str.h, cmd-edit.cc, cmd-edit.h,
cmd-hist.cc, cmd-hist.h, data-conv.cc, file-info.h, glob-match.cc,
glob-match.h, kpse.cc, kpse.h, lo-array-errwarn.cc, lo-array-errwarn.h,
lo-hash.cc, lo-hash.h, lo-ieee.cc, lo-ieee.h, lo-regexp.cc, lo-regexp.h,
oct-inttypes.cc, oct-inttypes.h, oct-mutex.cc, oct-mutex.h, oct-refcount.h,
oct-shlib.cc, oct-shlib.h, oct-sort.cc, oct-sort.h, oct-sparse.cc,
octave-preserve-stream-state.h, pathsearch.cc, pathsearch.h, quit.cc,
singleton-cleanup.cc, singleton-cleanup.h, str-vec.cc, str-vec.h,
unwind-prot.cc, unwind-prot.h, url-transfer.cc, url-transfer.h, version.cc,
version.in.h, cxx-signal-helpers.cc, acinclude.m4, main-cli.cc, main-gui.cc,
main.in.cc, mkoctfile.in.cc, octave-build-info.h, octave-build-info.in.cc,
octave-config.in.cc, octave-svgconvert.cc, shared-fcns.h:
maint: Eliminate "(void)" in C++ function prototypes/declarations.
author | Rik <rik@octave.org> |
---|---|
date | Tue, 24 Jan 2023 17:19:44 -0800 |
parents | 597f3ee61a48 |
children | 1daf8bfceac3 |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 2021-2023 The Octave Project Developers // // See the file COPYRIGHT.md in the top-level directory of this // distribution or <https://octave.org/copyright/>. // // This file is part of Octave. // // Octave is free software: you can redistribute it and/or modify it // under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // Octave is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with Octave; see the file COPYING. If not, see // <https://www.gnu.org/licenses/>. // //////////////////////////////////////////////////////////////////////// #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <iostream> #include <fstream> #include "base-text-renderer.h" #include "builtin-defun-decls.h" #include "dim-vector.h" #include "error.h" #include "graphics.h" #include "file-ops.h" #include "interpreter.h" #include "interpreter-private.h" #include "oct-env.h" #include "oct-process.h" OCTAVE_BEGIN_NAMESPACE(octave) std::string quote_string (std::string str) { return ('"' + str + '"'); } class OCTINTERP_API latex_renderer : public base_text_renderer { public: latex_renderer () : m_fontsize (10.0), m_fontname ("cmr"), m_tmp_dir (), m_color (dim_vector (1, 3), 0), m_latex_binary ("latex"), m_dvipng_binary ("dvipng"), m_dvisvg_binary ("dvisvgm"), m_debug (false), m_testing (true) { std::string bin = sys::env::getenv ("OCTAVE_LATEX_BINARY"); if (! bin.empty ()) m_latex_binary = quote_string (bin); bin = sys::env::getenv ("OCTAVE_DVIPNG_BINARY"); if (! bin.empty ()) m_dvipng_binary = quote_string (bin); bin = sys::env::getenv ("OCTAVE_DVISVG_BINARY"); if (! bin.empty ()) m_dvisvg_binary = quote_string (bin); m_debug = ! sys::env::getenv ("OCTAVE_LATEX_DEBUG_FLAG").empty (); } ~latex_renderer () { if (! m_tmp_dir.empty () && ! m_debug) sys::recursive_rmdir (m_tmp_dir); } void set_font (const std::string& /*name*/, const std::string& /*weight*/, const std::string& /*angle*/, double size) { m_fontsize = size; } void set_color (const Matrix& c) { if (c.numel () == 3) { m_color(0) = static_cast<uint8_t> (c (0) * 255); m_color(1) = static_cast<uint8_t> (c (1) * 255); m_color(2) = static_cast<uint8_t> (c (2) * 255); } } Matrix get_extent (text_element * /*elt*/, double /*rotation*/) { return Matrix (1, 2, 0.0); } Matrix get_extent (const std::string& txt, double rotation, const caseless_str& interpreter) { Matrix bbox; uint8NDArray pixels; text_to_pixels (txt, pixels, bbox, 0, 0, rotation, interpreter, false); return bbox.extract_n (0, 2, 1, 2); } void text_to_strlist (const std::string& txt, std::list<text_renderer::string>& lst, Matrix& bbox, int halign, int valign, double rotation, const caseless_str& interp) { uint8NDArray pixels; text_to_pixels (txt, pixels, bbox, halign, valign, rotation, interp, false); text_renderer::font fnt; text_renderer::string str ("", fnt, 0.0, 0.0); str.set_color (m_color); gh_manager& gh_mgr = octave::__get_gh_manager__ (); gh_manager::latex_data ldata = gh_mgr.get_latex_data (key (txt, halign)); str.set_svg_element (ldata.second); lst.push_back (str); } void text_to_pixels (const std::string& txt, uint8NDArray& pxls, Matrix& bbox, int halign, int valign, double rotation, const caseless_str& interpreter, bool handle_rotation); void set_anti_aliasing (bool /*val*/) { } octave_map get_system_fonts () { return octave_map (); } bool ok (); private: std::string key (const std::string& txt, int halign) { return (txt + ":" + std::to_string (m_fontsize) + ":" + std::to_string (halign) + ":" + std::to_string (m_color(0)) + ":" + std::to_string (m_color(1)) + ":" + std::to_string (m_color(2))); } void warn_helper (std::string caller, std::string txt, std::string cmd, process_execution_result result); uint8NDArray render (const std::string& txt, int halign = 0); bool read_image (const std::string& png_file, uint8NDArray& data) const; std::string write_tex_file (const std::string& txt, int halign); private: double m_fontsize; std::string m_fontname; std::string m_tmp_dir; uint8NDArray m_color; std::string m_latex_binary; std::string m_dvipng_binary; std::string m_dvisvg_binary; bool m_debug; bool m_testing; }; bool latex_renderer::ok () { // Only run the test once in a session static bool tested = false; static bool isok = false; if (! tested) { tested = true; // For testing, render a questoin mark uint8NDArray pixels = render ("?"); if (! pixels.isempty ()) isok = true; else warning_with_id ("Octave:LaTeX:internal-error", "latex_renderer: a run-time test failed and the 'latex' interpreter has been disabled."); } m_testing = false; return isok; } std::string latex_renderer::write_tex_file (const std::string& txt, int halign) { if (m_tmp_dir.empty ()) { //Create the temporary directory #if defined (OCTAVE_USE_WINDOWS_API) static std::string base_tmp_dir; if (base_tmp_dir.empty ()) { base_tmp_dir = sys::env::get_temp_directory (); // Make sure we don't get short 8.3 path on Windows since some // versions of latex on that platform don't support them // (see bug #62779) if (base_tmp_dir.find ('~') != std::string::npos) base_tmp_dir = sys::canonicalize_file_name (base_tmp_dir); } m_tmp_dir = sys::tempnam (base_tmp_dir, "latex"); #else m_tmp_dir = sys::tempnam ("", "latex"); #endif if (sys::mkdir (m_tmp_dir, 0700) != 0) { warning_with_id ("Octave:LaTeX:internal-error", "latex_renderer: unable to create temp directory"); return std::string (); } } std::string base_file_name = sys::file_ops::concat (m_tmp_dir, "default"); // Duplicate \n characters and align multi-line strings based on // horizontalalignment std::string latex_txt (txt); std::size_t pos = 0; while (true) { pos = txt.find_first_of ("\n", pos); if (pos == std::string::npos) break; latex_txt.replace (pos, 1, "\n\n"); pos += 1; } std::string env ("flushleft"); if (halign == 1) env = "center"; else if (halign == 2) env = "flushright"; latex_txt = std::string ("\\begin{" ) + env + "}\n" + latex_txt + "\n" + "\\end{" + env + "}\n"; // Write to temporary .tex file std::ofstream file; file.open (base_file_name + ".tex"); file << "\\documentclass[10pt, varwidth]{standalone}\n" << "\\usepackage{amsmath}\n" << "\\usepackage[utf8]{inputenc}\n" << "\\begin{document}\n" << latex_txt << "\n" << "\\end{document}"; file.close (); return base_file_name; } bool latex_renderer::read_image (const std::string& png_file, uint8NDArray& data) const { uint8NDArray alpha; uint8NDArray rgb; int height; int width; try { // First get the image size to build the argument to __magick_read__ octave_value_list retval = F__magick_ping__ (ovl (png_file), 1); octave_scalar_map info = retval(0).xscalar_map_value ("latex_renderer::read_image: " "Wrong type for info"); height = info.getfield ("rows").int_value (); width = info.getfield ("columns").int_value (); Cell region (dim_vector(1, 2)); region(0) = range<double> (1.0, height); region(1) = range<double> (1.0, width); info.setfield ("region", region); info.setfield ("index", octave_value (1)); // Retrieve the alpha map retval = F__magick_read__ (ovl (png_file, info), 3); alpha = retval(2).xuint8_array_value ("latex_renderer::read_image: " "Wrong type for alpha"); } catch (const execution_exception& ee) { warning_with_id ("Octave:LaTeX:internal-error", "latex_renderer:: failed to read png data. %s", ee.message ().c_str ()); interpreter& interp = __get_interpreter__ (); interp.recover_from_exception (); return false; } data = uint8NDArray (dim_vector (4, width, height), static_cast<uint8_t> (0)); for (int i = 0; i < height; i++) { for (int j = 0; j < width; j++) { data(0, j, i) = m_color(0); data(1, j, i) = m_color(1); data(2, j, i) = m_color(2); data(3, j, i) = alpha(height-i-1, j); } } return true; } void latex_renderer::warn_helper (std::string caller, std::string txt, std::string cmd, process_execution_result result) { if (m_testing && ! m_debug) return; if (! m_debug) warning_with_id ("Octave:LaTeX:internal-error", "latex_renderer: unable to compile \"%s\"", txt.c_str ()); else warning_with_id ("Octave:LaTeX:internal-error", "latex_renderer: %s failed for string \"%s\"\n\ * Command:\n\t%s\n\n* Error:\n%s\n\n* Stdout:\n%s", caller.c_str (), txt.c_str (), cmd.c_str (), result.err_msg ().c_str (), result.stdout_output ().c_str ()); } uint8NDArray latex_renderer::render (const std::string& txt, int halign) { // Render if it was not already done gh_manager& gh_mgr = octave::__get_gh_manager__ (); gh_manager::latex_data ldata = gh_mgr.get_latex_data (key (txt, halign)); if (! ldata.first.isempty ()) return ldata.first; uint8NDArray data; // First write the base .tex file std::string base_file_name = write_tex_file (txt, halign); if (base_file_name.empty ()) return data; // Generate DVI file std::string tex_file = quote_string (base_file_name + ".tex"); std::string dvi_file = quote_string (base_file_name + ".dvi"); std::string log_file = quote_string (base_file_name + ".log"); process_execution_result result; std::string cmd = (m_latex_binary + " -interaction=nonstopmode " + "-output-directory=" + quote_string (m_tmp_dir) + " " + tex_file); #if defined (OCTAVE_USE_WINDOWS_API) cmd = quote_string (cmd); #endif result = run_command_and_return_output (cmd); if (result.exit_status () != 0) { warn_helper ("latex", txt, cmd, result); if (txt != "?") { write_tex_file ("?", halign); result = run_command_and_return_output (cmd); if (result.exit_status () != 0) return data; } else return data; } double size_factor = m_fontsize / 10.0; // Convert DVI to SVG, read file and store its content for later use in // gl2ps_print std::string svg_file = base_file_name + ".svg"; cmd = (m_dvisvg_binary + " -n " + "-TS" + std::to_string (size_factor) + " " + "-v1 -o " + quote_string (svg_file) + " " + dvi_file); #if defined (OCTAVE_USE_WINDOWS_API) cmd = quote_string (cmd); #endif result = run_command_and_return_output (cmd); if (result.exit_status () != 0) { warn_helper ("dvisvg", txt, cmd, result); return data; } std::ifstream svg_stream (svg_file); std::string svg_string; svg_string.assign (std::istreambuf_iterator<char> (svg_stream), std::istreambuf_iterator<char> ()); // Convert DVI to PNG, read file and format pixel data for later use in // OpenGL std::string png_file = base_file_name + ".png"; cmd = (m_dvipng_binary + " " + dvi_file + " " + "-q -o " + quote_string (png_file) + " " + "-bg Transparent -D " + std::to_string (std::floor (72.0 * size_factor))); #if defined (OCTAVE_USE_WINDOWS_API) cmd = quote_string (cmd); #endif result = run_command_and_return_output (cmd); if (result.exit_status () != 0) { warn_helper ("dvipng", txt, cmd, result); return data; } if (! read_image (png_file, data)) return data; // Cache pixel and svg data for this string ldata.first = data; ldata.second = svg_string; gh_mgr.set_latex_data (key (txt, halign), ldata); if (m_debug) std::cout << "* Caching " << key (txt, halign) << std::endl; return data; } void latex_renderer::text_to_pixels (const std::string& txt, uint8NDArray& pixels, Matrix& bbox, int halign, int valign, double rotation, const caseless_str& /*interpreter*/, bool handle_rotation) { // Return early for empty strings if (txt.empty ()) { bbox = Matrix (1, 4, 0.0); return; } if (ok ()) pixels = render (txt, halign); else pixels = uint8NDArray (dim_vector (4, 1, 1), static_cast<uint8_t> (0)); if (pixels.ndims () < 3 || pixels.isempty ()) return; // nothing to render // Store unrotated bbox size bbox = Matrix (1, 4, 0.0); bbox (2) = pixels.dim2 (); bbox (3) = pixels.dim3 (); // Now rotate pixels if necessary int rot_mode = rotation_to_mode (rotation); if (! pixels.isempty ()) rotate_pixels (pixels, rot_mode); // Move X0 and Y0 depending on alignments and eventually swap values // for text rotated 90° 180° or 270° fix_bbox_anchor (bbox, halign, valign, rot_mode, handle_rotation); } base_text_renderer * make_latex_text_renderer () { latex_renderer *renderer = new latex_renderer (); return renderer; } OCTAVE_END_NAMESPACE(octave)