Mercurial > jwe > octave
view libinterp/corefcn/gl2ps-renderer.h @ 21083:8c9755d29d2a
Fix overflowing feedback buffers (bug #46417).
* gl2ps-renderer.h (glps_renderer::draw_axes): handle errors, warnings
and overflows after gl2psEndViewport.
* gl2ps-renderer.h (glps_renderer::buffer_overflow): new bool attribute.
* gl2ps-renderer.cc (glps_renderer::draw): make use of buffer_overflow to
detect overflows and increase buffer size by a factor of 2 instead of a
fixed amount of 1Mb.
* gl2ps-renderer.cc (glps_renderer::draw): pass a temporary file to gl2ps and
copy its content to the actual pipe/file stream after successfull run
* gl2ps-renderer.cc (glps_renderer::draw): remove error checking after
gl2psEndPage
* bootstrap.conf: add gnulib "ftruncate", necessary to discard content of
the temporary file
author | Pantxo Diribarne <pantxo.diribarne@gmail.com> |
---|---|
date | Sun, 03 Jan 2016 10:01:31 +0100 |
parents | 9d9270e2f98f |
children | 83ce7b8fb91c |
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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 (), buffer_overflow (false) { } ~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 ("glps_renderer::draw_axes: empty feedback buffer and/or nothing else to print"); else if (state == GL2PS_ERROR) error ("glps_renderer::draw_axes: gl2psEndPage returned GL2PS_ERROR"); buffer_overflow |= (state == GL2PS_OVERFLOW); } 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; bool buffer_overflow; }; #endif extern OCTINTERP_API void gl2ps_print (const graphics_object& fig, const std::string& cmd, const std::string& term); #endif