Mercurial > octave
view libinterp/corefcn/display.h @ 24789:a4d4ec566fd7
improve formatting of large values in pr-output functions
* pr-output.cc (make_real_format): Initialize local variables.
Switch to E format if available precision is exceeded. Set int format
based on leading digits.
(make_complex_matrix_format): Also allow switching to E format if
printing in fixed_point_format. Set int format based on leading
digits.
(make_real_matrix_format, make_complex_format,
make_complex_matrix_format, make_range_format):
Initialize local variables.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Thu, 22 Feb 2018 15:52:38 -0500 |
parents | 194eb4bd202b |
children | 6652d3823428 |
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/* Copyright (C) 2009-2017 John W. Eaton 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 OCTINTERP_API display_info { protected: display_info (void) : m_ht (1), m_wd (1), m_dp (0), m_rx (72), m_ry (72), m_dpy_avail (false), m_err_msg () { init (); } explicit display_info (const std::string& dpy_name) : m_ht (1), m_wd (1), m_dp (0), m_rx (72), m_ry (72), m_dpy_avail (false), m_err_msg () { init (dpy_name); } explicit display_info (bool query) : m_ht (1), m_wd (1), m_dp (0), m_rx (72), m_ry (72), m_dpy_avail (false), m_err_msg () { init ("", query); } explicit display_info (const std::string& dpy_name, bool query) : m_ht (1), m_wd (1), m_dp (0), m_rx (72), m_ry (72), m_dpy_avail (false), m_err_msg () { init (dpy_name, query); } public: static int height (void) { return instance_ok () ? instance->do_height () : 0; } static int width (void) { return instance_ok () ? instance->do_width () : 0; } static int depth (void) { return instance_ok () ? instance->do_depth () : 0; } static double x_dpi (void) { return instance_ok () ? instance->do_x_dpi () : 0; } static double y_dpi (void) { return instance_ok () ? instance->do_y_dpi () : 0; } static bool display_available (void) { std::string msg; return instance_ok () ? instance->do_display_available (msg) : false; } static bool display_available (std::string& msg) { return instance_ok () ? instance->do_display_available (msg) : false; } // To disable querying the window system for defaults, this function // must be called before any other display_info function. static void no_window_system (void) { instance_ok (false); } private: static display_info *instance; static void cleanup_instance (void) { delete instance; instance = nullptr; } // Height, width, and depth of the display. int m_ht; int m_wd; int m_dp; // X- and Y- Resolution of the display in dots (pixels) per inch. double m_rx; double m_ry; bool m_dpy_avail; std::string m_err_msg; int do_height (void) const { return m_ht; } int do_width (void) const { return m_wd; } int do_depth (void) const { return m_dp; } double do_x_dpi (void) const { return m_rx; } double do_y_dpi (void) const { return m_ry; } bool do_display_available (std::string& msg) const { msg = m_err_msg; return m_dpy_avail; } void init (const std::string& dpy_name = "", bool query = true); static bool instance_ok (bool query = true); }; } #endif