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////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2009-2021 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
//
// 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
// <https://www.gnu.org/licenses/>.
//
////////////////////////////////////////////////////////////////////////
#if defined (HAVE_CONFIG_H)
# include "config.h"
#endif
#include "base-text-renderer.h"
#include "errwarn.h"
#include "ft-text-renderer.h"
#include "text-renderer.h"
namespace octave
{
static base_text_renderer *
make_text_renderer (void)
{
// Allow the possibility of choosing different text rendering
// implementations.
return make_ft_text_renderer ();
}
text_renderer::text_renderer (void)
: rep (make_text_renderer ())
{ }
text_renderer::~text_renderer (void)
{
delete rep;
}
bool
text_renderer::ok (void) const
{
static bool warned = false;
if (! rep)
{
if (! warned)
{
warn_disabled_feature ("opengl_renderer::render_text",
"rendering text (FreeType)");
warned = true;
}
}
return rep != nullptr;
}
Matrix
text_renderer::get_extent (text_element *elt, double rotation)
{
static Matrix empty_extent (1, 4, 0.0);
return ok () ? rep->get_extent (elt, rotation) : empty_extent;
}
Matrix
text_renderer::get_extent (const std::string& txt, double rotation,
const caseless_str& interpreter)
{
static Matrix empty_extent (1, 4, 0.0);
return ok () ? rep->get_extent (txt, rotation, interpreter) : empty_extent;
}
void
text_renderer::set_anti_aliasing (bool val)
{
if (ok ())
rep->set_anti_aliasing (val);
}
octave_map
text_renderer::get_system_fonts (void)
{
octave_map retval;
if (ok ())
retval = rep->get_system_fonts ();
return retval;
}
void
text_renderer::set_font (const std::string& name, const std::string& weight,
const std::string& angle, double size)
{
if (ok ())
rep->set_font (name, weight, angle, size);
}
void
text_renderer::set_color (const Matrix& c)
{
if (ok ())
rep->set_color (c);
}
void
text_renderer::text_to_pixels (const std::string& txt,
uint8NDArray& pxls, Matrix& bbox,
int halign, int valign, double rotation,
const caseless_str& interpreter,
bool handle_rotation)
{
static Matrix empty_bbox (1, 4, 0.0);
static uint8NDArray empty_pxls;
if (ok ())
rep->text_to_pixels (txt, pxls, bbox, halign, valign, rotation,
interpreter, handle_rotation);
else
{
bbox = empty_bbox;
pxls = empty_pxls;
}
}
void
text_renderer::text_to_strlist (const std::string& txt,
std::list<text_renderer::string>& lst,
Matrix& bbox, int halign, int valign,
double rotation,
const caseless_str& interpreter)
{
static Matrix empty_bbox (1, 4, 0.0);
static std::list<text_renderer::string> empty_lst;
if (ok ())
rep->text_to_strlist (txt, lst, bbox, halign, valign, rotation,
interpreter);
else
{
bbox = empty_bbox;
lst = empty_lst;
}
}
}
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