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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 (octave_display_h)
#define octave_display_h 1
#include "octave-config.h"
#include <string>
class Matrix;
namespace octave
{
class display_info
{
public:
// Create object with default values. To be useful, you must call
// initialize to find the actual system parameters for the given
// display.
display_info (void)
: m_rx (72), m_ry (72), m_ht (1), m_wd (1), m_dp (0),
m_dpy_avail (false), m_msg ()
{ }
~display_info (void) = default;
display_info (const display_info&) = default;
display_info& operator = (const display_info&) = default;
void initialize (void);
double x_dpi (void) const { return m_rx; }
double y_dpi (void) const { return m_ry; }
int height (void) const { return m_ht; }
int width (void) const { return m_wd; }
int depth (void) const { return m_dp; }
bool display_available (void) const { return m_dpy_avail; }
std::string message (void) const { return m_msg; }
private:
// X- and Y- Resolution of the display in dots (pixels) per inch.
double m_rx;
double m_ry;
// Height, width, and depth of the display.
int m_ht;
int m_wd;
int m_dp;
bool m_dpy_avail;
// Message associated with any initiailization failure. Set if
// m_dpy_avail is false.
std::string m_msg;
};
}
#endif
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