Mercurial > octave
annotate libinterp/corefcn/base-text-renderer.h @ 29470:2ae4764180c6
Initial implementation of a LaTeX interpreter (bug #59546).
* NEWS: Announce basic support for "latex" interpreter.
* plot.txi: Restructure the "Use of the interpreter Property" section to include
3 subsections, one for each interpreter type. In "Printing and Saving Plots"
describe the new behavior.
* print.m: Document new behavior.
* contributors.in: Add Andrej Lojdl, a former GSoC student that worked on this
subject. Even though there is not much left of his original work, it served
as a very useful starting point.
* base-text-renderer.h, base-text-renderer.cc: New enum to store symbolic
constants for rotation angles.
(base_text_renderer::rotate_pixels): New utility method. Code extracted
from ft_text_renderer::render.
(base_text_renderer::rotation_to_mode): Moved from ft_text_renderer class.
(base_text_renderer::fix_bbox_anchor): New utility method. Code extracted
from ft_text_renderer::text_to_pixels.
* ft_text_renderer.cc (ft_text_renderer::render,
ft_text_renderer::text_to_pixels): Make use of base class utility functions.
* gl2ps-print.cc: New counter variable m_svg_def_index for safe inclusion of
defs coming from dvisvgm.
(gl2ps_renderer::format_svg_element): New function to manipulate svg elements
obtained from dvisvgm so as to position them properly on the figure and
change their color.
(gl2ps_renderer::strlist_to_svg): If the str_list object returned from
text_to_strlist contains an svg element, use format_svg_element to handle
position and color and then return it. Otherwise, use <g> and <text> elements
rather than <text> and <tspan> elements which are not supported by Qt's svg
renderer (svg-tiny implementation).
(gl2ps_renderer::strlist_to_ps): If the str_list object returned from
text_to_strlist contains an svg element, raise a warning about the
necessity of using -svgconvert.
* latex-text-renderer.h, latex-text-renderer.cc: New files to hold the
latex_interpreter class.
* libinterp/corefcn/module.mk: Add new files to the build system.
* text-renderer.h, text-renderer.cc (text_renderer): New data member latex_rep
to hold a pointer to an instance of a latex_renderer.
(text_renderer::~text_renderer, get_extent, set_anti_aliasing, set_font,
set_color, text_to_pixels, text_to_strlist): Duplicate action of the
latex_rep.
(text_renderer::latex_ok): New method to test the usability of the
latex_renderer.
(text_renderer::string::svg_element, text_renderer::string::set_svg_element,
text_renderer::string::get_svg_element): New string data member to hold
preformated svg element. Provide accessor methods.
* acinclude.m4: Add QtSvg to the list of imported QT_MODULES.
* octave-svgconvert.cc: Overhaul program to make use of Qt's QSvgRenderer
when rendering to PDF.
author | Pantxo Diribarne <pantxo.diribarne@gmail.com> |
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date | Mon, 22 Mar 2021 21:32:54 +0100 |
parents | 0a5b15007766 |
children | af41ebf3d1b3 |
rev | line source |
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1 //////////////////////////////////////////////////////////////////////// |
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2 // |
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3 // Copyright (C) 2009-2021 The Octave Project Developers |
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4 // |
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5 // See the file COPYRIGHT.md in the top-level directory of this |
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6 // distribution or <https://octave.org/copyright/>. |
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7 // |
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8 // This file is part of Octave. |
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9 // |
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10 // Octave is free software: you can redistribute it and/or modify it |
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11 // under the terms of the GNU General Public License as published by |
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12 // the Free Software Foundation, either version 3 of the License, or |
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13 // (at your option) any later version. |
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14 // |
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15 // Octave is distributed in the hope that it will be useful, but |
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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18 // GNU General Public License for more details. |
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19 // |
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20 // You should have received a copy of the GNU General Public License |
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21 // along with Octave; see the file COPYING. If not, see |
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22 // <https://www.gnu.org/licenses/>. |
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23 // |
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24 //////////////////////////////////////////////////////////////////////// |
21209 | 25 |
26 #if ! defined (octave_base_text_renderer_h) | |
27 #define octave_base_text_renderer_h 1 | |
28 | |
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29 #include "octave-config.h" |
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30 |
21209 | 31 #include <list> |
32 #include <string> | |
33 | |
34 #include "dMatrix.h" | |
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35 #include "oct-map.h" |
21209 | 36 #include "uint8NDArray.h" |
37 | |
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38 #include "text-engine.h" |
21209 | 39 #include "text-renderer.h" |
40 | |
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41 namespace octave |
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42 { |
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43 class |
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44 base_text_renderer : public text_processor |
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45 { |
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46 public: |
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47 |
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48 enum |
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49 { |
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50 ROTATION_0 = 0, |
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51 ROTATION_90 = 1, |
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52 ROTATION_180 = 2, |
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53 ROTATION_270 = 3 |
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54 }; |
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55 |
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56 base_text_renderer (void) : text_processor () { } |
21209 | 57 |
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58 // No copying! |
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59 |
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60 base_text_renderer (const base_text_renderer&) = delete; |
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61 |
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62 base_text_renderer& operator = (const base_text_renderer&) = delete; |
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63 |
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64 virtual ~base_text_renderer (void) = default; |
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66 virtual void |
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67 set_anti_aliasing (bool val) = 0; |
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68 |
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69 virtual Matrix |
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70 get_extent (text_element *elt, double rotation) = 0; |
21209 | 71 |
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72 virtual Matrix |
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73 get_extent (const std::string& txt, double rotation, |
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74 const caseless_str& interpreter) = 0; |
21209 | 75 |
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76 virtual void |
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77 set_font (const std::string& name, const std::string& weight, |
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78 const std::string& angle, double size) = 0; |
21209 | 79 |
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80 virtual octave_map |
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81 get_system_fonts (void) = 0; |
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82 |
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83 virtual void set_color (const Matrix& c) = 0; |
21209 | 84 |
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85 virtual void |
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86 text_to_pixels (const std::string& txt, uint8NDArray& pxls, |
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87 Matrix& bbox, int halign, int valign, double rotation, |
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88 const caseless_str& interpreter, |
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89 bool handle_rotation) = 0; |
21209 | 90 |
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91 virtual void |
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92 text_to_strlist (const std::string& txt, |
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93 std::list<text_renderer::string>& lst, |
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94 Matrix& box, int halign, int valign, double rotation, |
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95 const caseless_str& interpreter = "tex") = 0; |
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96 |
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97 void rotate_pixels (uint8NDArray& pixels, int rot_mode) const; |
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98 |
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99 int rotation_to_mode (double rotation) const; |
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100 |
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101 void fix_bbox_anchor (Matrix& bbox, int halign, |
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102 int valign, int rot_mode, |
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103 bool handle_rotation) const; |
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104 |
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105 }; |
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106 } |
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107 |
21209 | 108 #endif |