Mercurial > octave
annotate libgui/graphics/GLCanvas.h @ 24798:45470049a43f
Allow getframe and print to work without osmesa (bug #53186).
* NEWS: Announce support for printing invisible qt figures without osmesa.
* __opengl_print__.m: Allow invisible figures to be printed with qt if
QOFFSCREENSURFACE is present.
* getframe.m: Allow using __get_frame__ on invisible qt figures if
QOFFSCREENSURFACE is present.
* Backenc.cc (Backend::get_pixels): Don't restrict to visible figures.
* Canvas.h/cc (Canvas::do_print): New pure virtual function
(Canvas::print): Call do_print.
* GLCanvas.h/cc (GLCanvas::begin_rendering): New methods to make sure a valid
OpenGL context is made current before rendering.
(GLCanvas::end_rendering): Call doneCurrent.
(GLCanvas::getPixels): Make use of begin/end_rendering. If the figure is not
visible or its size is frozen, draw on a framebuffer object of suitable size.
(GLCanvas::do_print): Move code for OpenGL printing here. Make use of
begin/end_rendering.
* acinclude.m4: Add test for presence and usability of QOffscreenSurface.
* configure.ac: Allow building the manual with qt if QOffscreenSurface is OK.
* geometryimages.m, interpimages.m, plotimages.m, sparseimages.m,
splineimages.m: Allow using qt toolkit to generate images for the manual when
QOFFSCREENSURFACE is present.
author | Pantxo Diribarne <pantxo.diribarne@gmail.com> |
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date | Fri, 23 Feb 2018 14:33:55 +0100 |
parents | 194eb4bd202b |
children | ae6679369a80 |
rev | line source |
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1 /* |
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2 |
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3 Copyright (C) 2011-2017 Michael Goffioul |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software: you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by |
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9 the Free Software Foundation, either version 3 of the License, or |
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10 (at your option) any later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but |
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13 WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 GNU General Public License for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, see |
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19 <https://www.gnu.org/licenses/>. |
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20 |
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21 */ |
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22 |
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23 #if ! defined (octave_GLCanvas_h) |
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24 #define octave_GLCanvas_h 1 |
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25 |
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26 #if defined (HAVE_QOPENGLWIDGET) |
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27 # include <QOpenGLWidget> |
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28 # define OCTAVE_QT_OPENGL_WIDGET QOpenGLWidget |
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29 # include <QOpenGLFramebufferObject> |
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30 # define OCTAVE_QT_OPENGL_FBO QOpenGLFramebufferObject |
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31 # if defined (HAVE_QOFFSCREENSURFACE) |
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32 # include <QOpenGLContext> |
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33 # include <QOffscreenSurface> |
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34 # endif |
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35 #elif defined (HAVE_QGLWIDGET) |
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36 # include <QGLWidget> |
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37 # define OCTAVE_QT_OPENGL_WIDGET QGLWidget |
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38 # include <QGLFramebufferObject> |
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39 # define OCTAVE_QT_OPENGL_FBO QGLFramebufferObject |
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40 #else |
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41 # error "configuration error: must have <QOpenGLWidget> or <QGLWidget>." |
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42 #endif |
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43 |
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44 #include "Canvas.h" |
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45 |
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46 namespace QtHandles |
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47 { |
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48 class GLCanvas : public OCTAVE_QT_OPENGL_WIDGET, public Canvas |
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49 { |
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50 public: |
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51 GLCanvas (QWidget *parent, const graphics_handle& handle); |
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52 ~GLCanvas (void); |
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53 |
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54 void draw (const graphics_handle& handle); |
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55 uint8NDArray do_getPixels (const graphics_handle& handle); |
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56 void do_print (const QString& file_cmd, const QString& term, |
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57 const graphics_handle& handle); |
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58 void toggleAxes (const graphics_handle& handle); |
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59 void toggleGrid (const graphics_handle& handle); |
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60 void autoAxes (const graphics_handle& handle); |
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61 void drawZoomBox (const QPoint& p1, const QPoint& p2); |
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62 void resize (int /* x */, int /* y */, |
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63 int /* width */, int /* height */) { } |
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64 graphics_object selectFromAxes (const graphics_object& ax, |
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65 const QPoint& pt); |
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66 QWidget * qWidget (void) { return this; } |
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67 |
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68 protected: |
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69 void paintGL (void); |
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70 void mouseDoubleClickEvent (QMouseEvent *event); |
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71 void mouseMoveEvent (QMouseEvent *event); |
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72 void mousePressEvent (QMouseEvent *event); |
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73 void mouseReleaseEvent (QMouseEvent *event); |
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74 void wheelEvent (QWheelEvent *event); |
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75 void keyPressEvent (QKeyEvent *event); |
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76 void keyReleaseEvent (QKeyEvent *event); |
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77 |
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78 private: |
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79 |
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80 bool begin_rendering (void); |
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81 void end_rendering (void); |
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82 |
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83 # if defined (HAVE_QOFFSCREENSURFACE) |
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84 QOpenGLContext m_os_context; |
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85 QOffscreenSurface m_os_surface; |
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86 # endif |
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87 }; |
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88 |
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89 } |
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90 |
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91 #endif |