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annotate scripts/java/usejava.m @ 17280:8ce6cdd272eb

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Support TeX elements in FreeType renderer. * libinterp/corefcn/txt-eng.cc: New file. Contains mapping from symbol name to character code, in Unicode and MS symbol. * libinterp/corefcn/modules.mk (COREFCN_SRC): Add txt-eng.cc. * libinterp/corefcn/oct-tex-lexer.ll: Add "\n" to rules applicable to ".", as the latter does not include new line characters. * libinterp/corefcn/oct-tex-parser.yy: Remove debug statements. * libinterp/corefcn/txt-eng.ft.cc (gripe_missing_glyph, gripe_glyph_render): Change signature from char to FT_ULong. (ft_render::ft_render): Adapt to new/removed members. (ft_render::~ft_render): Remove use of fonts member. (ft_render::set_font): Likewise. Use font instead. (ft_render::push_new_line): Likewise. Change meaning of yoffset and initialize line_yoffset. (ft_render::update_line_bbox): New method. (ft_render::set_mode): Change meaning of yoffset and initialize line_yoffset. (ft_render::process_character): New method. (ft_render::visit(text_element_string)): Use it. (ft_render::visit(text_element_list), ft_render::visit(text_element_subscript), ft_render::visit(text_element_superscript), ft_render::visit(text_element_color), ft_render::visit(text_element_fontsize), ft_render::visit(text_element_fontname), ft_render::visit(text_element_fontstyle), ft_render::visit(text_element_symbol)): New methods. (ft_render::set_color): Use color member instead of red/green/blue. * libinterp/corefcn/txt-eng-ft.h (ft_render::visit(text_element_list), ft_render::visit(text_element_subscript), ft_render::visit(text_element_superscript), ft_render::visit(text_element_color), ft_render::visit(text_element_fontsize), ft_render::visit(text_element_fontname), ft_render::visit(text_element_fontstyle), ft_render::visit(text_element_symbol)): New methods. (ft_render::update_line_bbox, ft_render::process_character): New methods. (ft_render::current_face): Removed method.i (ft_render::font): New member, replaces obsolete ft_render::fonts. (ft_render::line_yoffset): New member. (ft_render::color): New member, replaces obsolete red, green and blue. (ft_render::ft_font::ft_font()): Implement default constructor. (ft_render::ft_font::operator=): Fix incorrect use of FT_Reference_Face return value. (ft_render::ft_font::is_valid): New method. * libinterp/corefcn/txt-eng.h (class text_element_symbol, class text_element_fontname, class text_element_fontsize, class text_element_fontname, class text_element_fontstyle, class text_element_color): Add forward definition. (text_element_symbol::invalid_code): New enum. (text_element_symbol::code): New member. (text_element_symbol::text_element_symbol): Initialize it. (text_element_symbol::get_symbol_code): New method. (text_element_fontstyle::get_fontstyle): New method. (text_element_fontname::get_fontname): Renamed from fontname. (text_element_fontsize::get_fontsize): Renamed from fontsize.
author Michael Goffioul <michael.goffioul@gmail.com>
date Sun, 18 Aug 2013 16:36:46 -0400
parents e2de3c8882be
children bc924baa2c4e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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72c96de7a403 maint: update copyright notices for 2012
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1 ## Copyright (C) 2012 Rik Wehbring
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2 ## Parts Copyright (C) 2012 Philip Nienhuis
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3 ##
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4 ## This file is part of Octave.
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5 ##
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6 ## Octave is free software; you can redistribute it and/or modify it
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7 ## under the terms of the GNU General Public License as published by
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8 ## the Free Software Foundation; either version 3 of the License, or (at
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9 ## your option) any later version.
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10 ##
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11 ## Octave is distributed in the hope that it will be useful, but
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12 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 ## General Public License for more details.
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15 ##
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16 ## You should have received a copy of the GNU General Public License
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17 ## along with Octave; see the file COPYING. If not, see
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18 ## <http://www.gnu.org/licenses/>.
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19
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20 ## -*- texinfo -*-
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21 ## @deftypefn {Function File} {} usejava (@var{feature})
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22 ## Return true if the Java element @var{feature} is available.
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23 ##
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24 ## Possible features are:
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25 ##
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26 ## @table @asis
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27 ## @item "awt"
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28 ## Abstract Window Toolkit for GUIs.
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29 ##
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30 ## @item "desktop"
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31 ## Interactive desktop is running.
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32 ##
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33 ## @item "jvm"
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34 ## Java Virtual Machine.
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35 ##
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36 ## @item "swing"
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37 ## Swing components for lightweight GUIs.
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38 ## @end table
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39 ##
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40 ## @code{usejava} determines if specific Java features are available in an
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41 ## Octave session. This function is provided for scripts which may alter
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42 ## their behavior based on the availability of Java. The feature "desktop"
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43 ## always returns @code{false} as Octave has no Java-based desktop. Other
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44 ## features may be available if Octave was compiled with the Java Interface
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45 ## and Java is installed.
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46 ## @end deftypefn
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47
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48 ## Author: Rik Wehbring
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49 ## Author: Philip Nienhuis <prnienhuis@users.sf.net>
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50
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51 function retval = usejava (feature)
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52
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53 if (nargin != 1 || ! ischar (feature))
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54 print_usage ();
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55 endif
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56
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57 retval = false;
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58
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59 switch feature
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60 ## For each feature, try methods() on a Java class of a feature
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61 case "awt"
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62 try
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63 dum = methods ("java.awt.Frame");
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64 retval = true;
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65 end_try_catch
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66 case "desktop"
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67 ## Octave has no Java based GUI/desktop, leave retval = false
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68 case "jvm"
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69 try
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70 dum = methods ("java.lang.Runtime");
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71 retval = true;
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72 end_try_catch
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73 case "swing"
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74 try
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75 dum = methods ("javax.swing.Popup");
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76 retval = true;
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77 end_try_catch
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78 otherwise
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79 error ("usejava: unrecognized feature '%s'", feature);
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80 endswitch
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81
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82 endfunction
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83
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84
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85 %!assert (usejava ("desktop"), false)
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86
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87 %!testif HAVE_JAVA
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88 %! assert (usejava ("jvm"), true);
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89
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90 %% Test input validation
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91 %!error usejava ()
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92 %!error usejava (1, 2)
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93 %!error usejava (1)
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94 %!error <unrecognized feature> usejava ("abc")
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95