Mercurial > octave
view libinterp/corefcn/gl2ps-renderer.h @ 20624:4e47e10d5279
Add basic support for multiline and tex markup in printed figures (bugs #31468, 42320, 45301)
* gl2ps-renderer.cc (code_to_symbol): new static function. Returns a chararcter in the Symbol font from an utf8 wide char.
* gl2ps-renderer.cc (select_font): move code for selecting allowed gl2ps fonts (previously in set_font) in a separate static function.
* gl2ps-renderer.cc (escape_character): new static function for escaping postscript special characters such as "(" and ")".
* gl2ps-renderer.cc (glps_render::render_text) rewrite function to print parsed strings.
* gl2ps-renderer.cc (glps_render::draw_text) use render_text to print parsed strings.
* gl2ps-renderer.cc (glps_render::fix_strlist_position): rotate and translate coordinates to align each substring position bottom-left.
* gl2ps-renderer.h (glps_render::fix_strlist_position): declare new method
author | Pantxo Diribarne <pantxo.diribarne@gmail.com> |
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date | Tue, 13 Oct 2015 23:09:43 +0200 |
parents | 395140e53656 |
children | 5b7643257978 |
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/* Copyright (C) 2009-2015 Shai Ayal 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 <http://www.gnu.org/licenses/>. */ #if !defined (octave_gl2ps_renderer_h) #define octave_gl2ps_renderer_h 1 #include "graphics.h" #ifdef HAVE_GL2PS_H #include "gl-render.h" #include <gl2ps.h> class OCTINTERP_API glps_renderer : public opengl_renderer { public: glps_renderer (FILE *_fp, const std::string& _term) : opengl_renderer () , fp (_fp), term (_term), fontsize (), fontname () { } ~glps_renderer (void) { } void draw (const graphics_object& go, const std::string& print_cmd); protected: Matrix render_text (const std::string& txt, double x, double y, double z, int halign, int valign, double rotation = 0.0); void set_font (const base_properties& props); void draw_axes (const axes::properties& props) { // Initialize a sorting tree (viewport) in gl2ps for each axes GLint vp[4]; glGetIntegerv (GL_VIEWPORT, vp); gl2psBeginViewport (vp); // Draw and glFinish () or there may primitives missing in the // gl2ps output. opengl_renderer::draw_axes (props); glFinish (); // Finalize viewport GLint state = gl2psEndViewport (); if (state == GL2PS_NO_FEEDBACK) warning ("gl2ps-renderer::draw: empty feedback buffer and/or nothing else to print"); } void draw_text (const text::properties& props); void draw_pixels (GLsizei w, GLsizei h, GLenum format, GLenum type, const GLvoid *data); void set_linestyle (const std::string& s, bool use_stipple = false) { opengl_renderer::set_linestyle (s, use_stipple); if (s == "-" && ! use_stipple) gl2psDisable (GL2PS_LINE_STIPPLE); else gl2psEnable (GL2PS_LINE_STIPPLE); } void set_polygon_offset (bool on, float offset = 0.0f) { if (on) { opengl_renderer::set_polygon_offset (on, offset); gl2psEnable (GL2PS_POLYGON_OFFSET_FILL); } else { gl2psDisable (GL2PS_POLYGON_OFFSET_FILL); opengl_renderer::set_polygon_offset (on, offset); } } void set_linewidth (float w) { gl2psLineWidth (w); } private: // Use xform to compute the coordinates of the ft_string list // that have been parsed by freetype void fix_strlist_position (double x, double y, double z, Matrix box, double rotation, std::list<ft_render::ft_string>& lst); private: int alignment_to_mode (int ha, int va) const; FILE *fp; caseless_str term; double fontsize; std::string fontname; }; #endif // HAVE_GL2PS_H extern OCTINTERP_API void gl2ps_print (const graphics_object& fig, const std::string& cmd, const std::string& term); #endif