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annotate libinterp/corefcn/gl2ps-renderer.h @ 20638:d30fc2c11455

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Fix missing legend background in gl2ps outputs (bug #44765) * gl2ps-render.h (glps_renderer): new private attribute "naxes" used to count drawn axes * gl2ps-renderer.h (glps_renderer::draw_axes): new overloaded method. Use gl2psBegin(End) viewport to Finalize/Initialize a new viewport each time an axes is drawn. This is supposed to mimic "glClear (... GL_DEPTH_BUFFER_BIT)" in opengl_renderer::draw_axes
author Pantxo Diribarne <pantxo.diribarne@gmail.com>
date Sun, 11 Oct 2015 13:13:33 +0200
parents 1784bf79ed43
children 395140e53656
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1 /*
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2
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3 Copyright (C) 2009-2015 Shai Ayal
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #if !defined (octave_gl2ps_renderer_h)
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24 #define octave_gl2ps_renderer_h 1
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26 #include "graphics.h"
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28 #ifdef HAVE_GL2PS_H
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29
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30 #include "gl-render.h"
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31 #include <gl2ps.h>
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32
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33 class
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34 OCTINTERP_API
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35 glps_renderer : public opengl_renderer
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36 {
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37 public:
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38 glps_renderer (FILE *_fp, const std::string& _term)
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39 : opengl_renderer () , fp (_fp), term (_term), fontsize (),
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40 fontname (), naxes (0) { }
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41
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42 ~glps_renderer (void) { }
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43
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44 void draw (const graphics_object& go, const std::string& print_cmd);
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45
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46 protected:
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47
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48 Matrix render_text (const std::string& txt,
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49 double x, double y, double z,
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50 int halign, int valign, double rotation = 0.0);
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51
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52 void set_font (const base_properties& props);
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54 void draw_axes (const axes::properties& props)
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55 {
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56 // Finish previous sorting tree here, the last one will be closed
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57 // by gl2psEndPage ()
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58 if (naxes++)
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59 gl2psEndViewport ();
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60
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61 // Initialize a sorting tree in gl2ps for each axes
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62 GLint vp[4];
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63 glGetIntegerv (GL_VIEWPORT, vp);
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64 gl2psBeginViewport (vp);
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65
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66 // Draw and glFinish () or there may primitives missing in the
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67 // gl2ps output.
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68 opengl_renderer::draw_axes (props);
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69 glFinish ();
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70 }
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71
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72 void draw_text (const text::properties& props);
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73 void draw_pixels (GLsizei w, GLsizei h, GLenum format,
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74 GLenum type, const GLvoid *data);
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75
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76 void set_linestyle (const std::string& s, bool use_stipple = false)
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77 {
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78 opengl_renderer::set_linestyle (s, use_stipple);
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79
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80 if (s == "-" && ! use_stipple)
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81 gl2psDisable (GL2PS_LINE_STIPPLE);
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82 else
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83 gl2psEnable (GL2PS_LINE_STIPPLE);
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84 }
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85
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86 void set_polygon_offset (bool on, float offset = 0.0f)
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87 {
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88 if (on)
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89 {
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90 opengl_renderer::set_polygon_offset (on, offset);
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91 gl2psEnable (GL2PS_POLYGON_OFFSET_FILL);
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92 }
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93 else
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94 {
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95 gl2psDisable (GL2PS_POLYGON_OFFSET_FILL);
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96 opengl_renderer::set_polygon_offset (on, offset);
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97 }
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98 }
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99
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100 void set_linewidth (float w)
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101 {
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102 gl2psLineWidth (w);
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103 }
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104
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105 private:
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106 int alignment_to_mode (int ha, int va) const;
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107 FILE *fp;
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108 caseless_str term;
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109 double fontsize;
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110 std::string fontname;
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111 int naxes;
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112 };
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113
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114 #endif // HAVE_GL2PS_H
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115
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116 extern OCTINTERP_API void
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117 gl2ps_print (const graphics_object& fig, const std::string& cmd,
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118 const std::string& term);
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119
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120 #endif