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////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2011-2024 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_qt_graphics_toolkit_h)
#define octave_qt_graphics_toolkit_h 1
#include <QObject>
#include "event-manager.h"
#include "graphics.h"
OCTAVE_BEGIN_NAMESPACE(octave)
class interpreter;
class Object;
class ObjectProxy;
class qt_graphics_toolkit
: public QObject, public octave::base_graphics_toolkit
{
Q_OBJECT
public:
qt_graphics_toolkit (octave::interpreter& interp);
~qt_graphics_toolkit () = default;
// The interpreter may call graphics toolkit functions that we
// implement here. The Qt GUI that manages these actions runs in a
// separate thread. So in order to correctly cross from the
// interpreter thread to the GUI thread, these functions should emit
// signals (in the interpreter thread) that are handled by slots
// that will run in the GUI thread. This design is similar to the
// event_manager, interpreter_events, and qt_interpreter_events
// classes work to pass messages from the interpreter to the GUI.
//
// FIXME: currently most of these functions do not emit signals.
// They may work because they use locking and the gh_manager class,
// but it might be better to use Qt signals and slots. In any case,
// we should ensure that they are correctly handling the connection
// between the interpreter and GUI threads.
bool is_valid () const { return true; }
void redraw_figure (const graphics_object& h) const;
void show_figure (const graphics_object& h) const;
void update (const graphics_object& obj, int pId);
bool initialize (const graphics_object& obj);
void finalize (const graphics_object& obj);
void print_figure (const graphics_object& go,
const std::string& term,
const std::string& file_cmd,
const std::string& /*debug_file*/) const;
uint8NDArray get_pixels (const graphics_object& go) const;
Matrix get_text_extent (const graphics_object& go) const;
static Object * toolkitObject (const graphics_object& go);
static ObjectProxy * toolkitObjectProxy (const graphics_object& go);
signals:
void create_object_signal (double handle);
public slots:
void interpreter_event (const octave::fcn_callback& fcn);
void interpreter_event (const octave::meth_callback& meth);
void create_object (double handle);
void gh_callback_event (const graphics_handle& h, const std::string& name);
void gh_callback_event (const graphics_handle& h, const std::string& name,
const octave_value& data);
void gh_set_event (const graphics_handle& h, const std::string& name,
const octave_value& value);
void gh_set_event (const graphics_handle& h, const std::string& name,
const octave_value& value, bool notify_toolkit);
void gh_set_event (const graphics_handle& h, const std::string& name,
const octave_value& value, bool notify_toolkit,
bool redraw_figure);
private:
octave::interpreter& m_interpreter;
};
OCTAVE_END_NAMESPACE(octave)
#endif
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