Mercurial > octave
view libinterp/corefcn/latex-text-renderer.cc @ 31605:e88a07dec498 stable
maint: Use macros to begin/end C++ namespaces.
* oct-conf-post-public.in.h: Define two macros (OCTAVE_BEGIN_NAMESPACE,
OCTAVE_END_NAMESPACE) that can be used to start/end a namespace.
* mk-opts.pl, build-env.h, build-env.in.cc, __betainc__.cc, __contourc__.cc,
__dsearchn__.cc, __eigs__.cc, __expint__.cc, __ftp__.cc, __gammainc__.cc,
__ichol__.cc, __ilu__.cc, __isprimelarge__.cc, __lin_interpn__.cc,
__magick_read__.cc, __pchip_deriv__.cc, __qp__.cc, amd.cc, auto-shlib.cc,
auto-shlib.h, balance.cc, base-text-renderer.cc, base-text-renderer.h,
besselj.cc, bitfcns.cc, bsxfun.cc, c-file-ptr-stream.cc, c-file-ptr-stream.h,
call-stack.cc, call-stack.h, ccolamd.cc, cellfun.cc, chol.cc, colamd.cc,
colloc.cc, conv2.cc, daspk.cc, dasrt.cc, dassl.cc, data.cc, data.h, debug.cc,
defaults.cc, defaults.h, defun-int.h, defun.cc, det.cc, dirfns.cc, display.cc,
display.h, dlmread.cc, dmperm.cc, dot.cc, dynamic-ld.cc, dynamic-ld.h, eig.cc,
ellipj.cc, environment.cc, environment.h, error.cc, error.h, errwarn.h,
event-manager.cc, event-manager.h, event-queue.cc, event-queue.h, fcn-info.cc,
fcn-info.h, fft.cc, fft2.cc, fftn.cc, file-io.cc, filter.cc, find.cc,
ft-text-renderer.cc, ft-text-renderer.h, gcd.cc, getgrent.cc, getpwent.cc,
getrusage.cc, givens.cc, gl-render.cc, gl-render.h, gl2ps-print.cc,
gl2ps-print.h, graphics-toolkit.cc, graphics-toolkit.h, graphics.cc,
graphics.in.h, gsvd.cc, gtk-manager.cc, gtk-manager.h, hash.cc, help.cc,
help.h, hess.cc, hex2num.cc, hook-fcn.cc, hook-fcn.h, input.cc, input.h,
interpreter-private.cc, interpreter-private.h, interpreter.cc, interpreter.h,
inv.cc, jsondecode.cc, jsonencode.cc, kron.cc, latex-text-renderer.cc,
latex-text-renderer.h, load-path.cc, load-path.h, load-save.cc, load-save.h,
lookup.cc, ls-ascii-helper.cc, ls-ascii-helper.h, ls-oct-text.cc, ls-utils.cc,
ls-utils.h, lsode.cc, lu.cc, mappers.cc, matrix_type.cc, max.cc, mex-private.h,
mex.cc, mgorth.cc, nproc.cc, oct-fstrm.cc, oct-fstrm.h, oct-hdf5-types.cc,
oct-hdf5-types.h, oct-hist.cc, oct-hist.h, oct-iostrm.cc, oct-iostrm.h,
oct-opengl.h, oct-prcstrm.cc, oct-prcstrm.h, oct-procbuf.cc, oct-procbuf.h,
oct-process.cc, oct-process.h, oct-stdstrm.h, oct-stream.cc, oct-stream.h,
oct-strstrm.cc, oct-strstrm.h, oct-tex-lexer.in.ll, oct-tex-parser.yy,
ordqz.cc, ordschur.cc, pager.cc, pager.h, pinv.cc, pow2.cc, pr-flt-fmt.cc,
pr-output.cc, procstream.cc, procstream.h, psi.cc, qr.cc, quad.cc, quadcc.cc,
qz.cc, rand.cc, rcond.cc, regexp.cc, schur.cc, settings.cc, settings.h,
sighandlers.cc, sighandlers.h, sparse-xdiv.cc, sparse-xdiv.h, sparse-xpow.cc,
sparse-xpow.h, sparse.cc, spparms.cc, sqrtm.cc, stack-frame.cc, stack-frame.h,
stream-euler.cc, strfind.cc, strfns.cc, sub2ind.cc, svd.cc, sylvester.cc,
symbfact.cc, syminfo.cc, syminfo.h, symrcm.cc, symrec.cc, symrec.h,
symscope.cc, symscope.h, symtab.cc, symtab.h, syscalls.cc, sysdep.cc, sysdep.h,
text-engine.cc, text-engine.h, text-renderer.cc, text-renderer.h, time.cc,
toplev.cc, tril.cc, tsearch.cc, typecast.cc, url-handle-manager.cc,
url-handle-manager.h, urlwrite.cc, utils.cc, utils.h, variables.cc,
variables.h, xdiv.cc, xdiv.h, xnorm.cc, xnorm.h, xpow.cc, xpow.h,
__delaunayn__.cc, __fltk_uigetfile__.cc, __glpk__.cc, __init_fltk__.cc,
__init_gnuplot__.cc, __ode15__.cc, __voronoi__.cc, audiodevinfo.cc,
audioread.cc, convhulln.cc, fftw.cc, gzip.cc, mk-build-env-features.sh,
mk-builtins.pl, cdef-class.cc, cdef-class.h, cdef-fwd.h, cdef-manager.cc,
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.cc, ov-base.h, ov-bool-mat.cc,
ov-builtin.h, ov-cell.cc, ov-class.cc, ov-class.h, ov-classdef.cc,
ov-classdef.h, ov-complex.cc, ov-fcn-handle.cc, ov-fcn-handle.h, ov-fcn.h,
ov-java.cc, ov-java.h, ov-mex-fcn.h, ov-null-mat.cc, ov-oncleanup.cc,
ov-struct.cc, ov-typeinfo.cc, ov-typeinfo.h, ov-usr-fcn.cc, ov-usr-fcn.h,
ov.cc, ov.h, octave.cc, octave.h, mk-ops.sh, op-b-b.cc, op-b-bm.cc,
op-b-sbm.cc, op-bm-b.cc, op-bm-bm.cc, op-bm-sbm.cc, op-cdm-cdm.cc, op-cell.cc,
op-chm.cc, op-class.cc, op-cm-cm.cc, op-cm-cs.cc, op-cm-m.cc, op-cm-s.cc,
op-cm-scm.cc, op-cm-sm.cc, op-cs-cm.cc, op-cs-cs.cc, op-cs-m.cc, op-cs-s.cc,
op-cs-scm.cc, op-cs-sm.cc, op-dm-dm.cc, op-dm-scm.cc, op-dm-sm.cc,
op-dm-template.cc, op-dms-template.cc, op-fcdm-fcdm.cc, op-fcm-fcm.cc,
op-fcm-fcs.cc, op-fcm-fm.cc, op-fcm-fs.cc, op-fcn.cc, op-fcs-fcm.cc,
op-fcs-fcs.cc, op-fcs-fm.cc, op-fcs-fs.cc, op-fdm-fdm.cc, op-fm-fcm.cc,
op-fm-fcs.cc, op-fm-fm.cc, op-fm-fs.cc, op-fs-fcm.cc, op-fs-fcs.cc,
op-fs-fm.cc, op-fs-fs.cc, op-i16-i16.cc, op-i32-i32.cc, op-i64-i64.cc,
op-i8-i8.cc, op-int-concat.cc, op-m-cm.cc, op-m-cs.cc, op-m-m.cc, op-m-s.cc,
op-m-scm.cc, op-m-sm.cc, op-mi.cc, op-pm-pm.cc, op-pm-scm.cc, op-pm-sm.cc,
op-pm-template.cc, op-range.cc, op-s-cm.cc, op-s-cs.cc, op-s-m.cc, op-s-s.cc,
op-s-scm.cc, op-s-sm.cc, op-sbm-b.cc, op-sbm-bm.cc, op-sbm-sbm.cc,
op-scm-cm.cc, op-scm-cs.cc, op-scm-m.cc, op-scm-s.cc, op-scm-scm.cc,
op-scm-sm.cc, op-sm-cm.cc, op-sm-cs.cc, op-sm-m.cc, op-sm-s.cc, op-sm-scm.cc,
op-sm-sm.cc, op-str-m.cc, op-str-s.cc, op-str-str.cc, op-struct.cc,
op-ui16-ui16.cc, op-ui32-ui32.cc, op-ui64-ui64.cc, op-ui8-ui8.cc, ops.h,
anon-fcn-validator.cc, 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.cc, 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.cc, pt-bp.h,
pt-cbinop.cc, pt-cbinop.h, pt-cell.cc, pt-cell.h, pt-check.cc, pt-check.h,
pt-classdef.cc, pt-classdef.h, pt-cmd.h, pt-colon.cc, pt-colon.h, pt-const.cc,
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.cc,
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-vm-eval.cc, pt-walk.cc, pt-walk.h,
pt.cc, pt.h, token.cc, token.h, Range.cc, Range.h, idx-vector.cc, idx-vector.h,
range-fwd.h, CollocWt.cc, CollocWt.h, aepbalance.cc, aepbalance.h, chol.cc,
chol.h, gepbalance.cc, gepbalance.h, gsvd.cc, gsvd.h, hess.cc, hess.h,
lo-mappers.cc, lo-mappers.h, lo-specfun.cc, lo-specfun.h, lu.cc, lu.h,
oct-convn.cc, oct-convn.h, oct-fftw.cc, oct-fftw.h, oct-norm.cc, oct-norm.h,
oct-rand.cc, oct-rand.h, oct-spparms.cc, oct-spparms.h, qr.cc, qr.h, qrp.cc,
qrp.h, randgamma.cc, randgamma.h, randmtzig.cc, randmtzig.h, randpoisson.cc,
randpoisson.h, schur.cc, 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.cc, action-container.h,
base-list.h, cmd-edit.cc, cmd-edit.h, cmd-hist.cc, cmd-hist.h, f77-fcn.h,
file-info.cc, file-info.h, lo-array-errwarn.cc, lo-array-errwarn.h, lo-hash.cc,
lo-hash.h, lo-ieee.h, lo-regexp.cc, lo-regexp.h, lo-utils.cc, lo-utils.h,
oct-base64.cc, oct-base64.h, oct-glob.cc, oct-glob.h, oct-inttypes.h,
oct-mutex.cc, oct-mutex.h, oct-refcount.h, oct-shlib.cc, oct-shlib.h,
oct-sparse.cc, oct-sparse.h, oct-string.h, octave-preserve-stream-state.h,
pathsearch.cc, pathsearch.h, quit.cc, quit.h, unwind-prot.cc, unwind-prot.h,
url-transfer.cc, url-transfer.h : Use new macros to begin/end C++ namespaces.
author | Rik <rik@octave.org> |
---|---|
date | Thu, 01 Dec 2022 14:23:45 -0800 |
parents | 8340137bb190 |
children | aac27ad79be6 |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 2021-2022 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 (void) : 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 (void) { 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 (void) { return octave_map (); } bool ok (void); 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 (void) { // 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 (void) { latex_renderer *renderer = new latex_renderer (); return renderer; } OCTAVE_END_NAMESPACE(octave)