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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_GLCanvas_h)
#define octave_GLCanvas_h 1
#include <QOffscreenSurface>
#include <QOpenGLContext>
#include <QOpenGLFramebufferObject>
#include <QOpenGLWidget>
#include "Canvas.h"
#include "gl-render.h"
#include "qopengl-functions.h"
OCTAVE_BEGIN_NAMESPACE(octave)
class GLWidget : public QOpenGLWidget
{
Q_OBJECT
public:
GLWidget (Canvas& parent_canvas, QWidget *parent);
~GLWidget ();
void initializeGL ();
void draw (graphics_object go);
uint8NDArray do_getPixels (graphics_object go);
void do_print (const QString& file_cmd, const QString& term,
graphics_object go);
void drawZoomBox (const QPoint& p1, const QPoint& p2);
void resize (int /* x */, int /* y */,
int /* width */, int /* height */) { }
graphics_object selectFromAxes (const graphics_object& ax,
const QPoint& pt);
bool begin_rendering ();
void end_rendering ();
protected:
void paintGL ();
void mouseDoubleClickEvent (QMouseEvent *event);
void mouseMoveEvent (QMouseEvent *event);
void mousePressEvent (QMouseEvent *event);
void mouseReleaseEvent (QMouseEvent *event);
void wheelEvent (QWheelEvent *event);
void keyPressEvent (QKeyEvent *event);
void keyReleaseEvent (QKeyEvent *event);
private:
Canvas& m_parent_canvas;
qopengl_functions m_glfcns;
opengl_renderer m_renderer;
QOpenGLContext m_os_context;
QOffscreenSurface m_os_surface;
};
class GLCanvas : public Canvas
{
public:
GLCanvas (octave::interpreter& interp, const graphics_handle& handle,
QWidget *parent);
~GLCanvas ();
void draw (const graphics_handle& handle);
uint8NDArray do_getPixels (const graphics_handle& handle);
void do_print (const QString& file_cmd, const QString& term,
const graphics_handle& handle);
void drawZoomBox (const QPoint& p1, const QPoint& p2);
void resize (int /* x */, int /* y */,
int /* width */, int /* height */) { }
graphics_object selectFromAxes (const graphics_object& ax,
const QPoint& pt);
QWidget * qWidget () { return m_glwidget; }
private:
GLWidget *m_glwidget;
bool begin_rendering ();
void end_rendering ();
};
OCTAVE_END_NAMESPACE(octave)
#endif
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