Mercurial > octave
view libgui/graphics/GLCanvas.cc @ 30564:796f54d4ddbf stable
update Octave Project Developers copyright for the new year
In files that have the "Octave Project Developers" copyright notice,
update for 2021.
In all .txi and .texi files except gpl.txi and gpl.texi in the
doc/liboctave and doc/interpreter directories, change the copyright
to "Octave Project Developers", the same as used for other source
files. Update copyright notices for 2022 (not done since 2019). For
gpl.txi and gpl.texi, change the copyright notice to be "Free Software
Foundation, Inc." and leave the date at 2007 only because this file
only contains the text of the GPL, not anything created by the Octave
Project Developers.
Add Paul Thomas to contributors.in.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Tue, 28 Dec 2021 18:22:40 -0500 |
parents | 6ea4a84df9c7 |
children | ca7d58406f82 c6d54dd31a7e |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 2011-2022 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 (HAVE_CONFIG_H) # include "config.h" #endif #include "GLCanvas.h" #include "gl-select.h" #include "gl-render.h" #include "gl2ps-print.h" #include "graphics.h" #include "interpreter.h" namespace octave { #if defined (HAVE_QOPENGLWIDGET) # define OCTAVE_QT_OPENGL_WIDGET_FORMAT_ARGS #else # if defined (Q_OS_WIN32) # define OCTAVE_QT_OPENGL_WIDGET_FORMAT_ARGS \ QGLFormat (QGL::SampleBuffers | QGL::AlphaChannel \ | QGL::IndirectRendering), # else # define OCTAVE_QT_OPENGL_WIDGET_FORMAT_ARGS \ QGLFormat (QGL::SampleBuffers | QGL::AlphaChannel), # endif #endif GLCanvas::GLCanvas (octave::base_qobject& oct_qobj, octave::interpreter& interp, const graphics_handle& gh, QWidget *xparent) : OCTAVE_QT_OPENGL_WIDGET (OCTAVE_QT_OPENGL_WIDGET_FORMAT_ARGS xparent), Canvas (oct_qobj, interp, gh), m_glfcns (), m_renderer (m_glfcns) { setFocusPolicy (Qt::ClickFocus); setFocus (); } GLCanvas::~GLCanvas (void) { } void GLCanvas::initializeGL (void) { m_glfcns.init (); } void GLCanvas::draw (const graphics_handle& gh) { gh_manager& gh_mgr = m_interpreter.get_gh_manager (); octave::autolock guard (gh_mgr.graphics_lock ()); graphics_object go = gh_mgr.get_object (gh); if (go) { graphics_object fig = go.get_ancestor ("figure"); double dpr = fig.get ("__device_pixel_ratio__").double_value (); m_renderer.set_viewport (dpr * width (), dpr * height ()); m_renderer.set_device_pixel_ratio (dpr); m_renderer.draw (go); } } uint8NDArray GLCanvas::do_getPixels (const graphics_handle& gh) { uint8NDArray retval; gh_manager& gh_mgr = m_interpreter.get_gh_manager (); graphics_object go = gh_mgr.get_object (gh); if (go && go.isa ("figure")) { Matrix pos = go.get ("position").matrix_value (); double dpr = go.get ("__device_pixel_ratio__").double_value (); pos(2) *= dpr; pos(3) *= dpr; // Make sure we have a valid current context if (! begin_rendering ()) return retval; // When the figure is not visible or its size is frozen for printing, // we use a framebuffer object to make sure we are rendering on a // suitably large frame. if (go.get ("visible").string_value () == "off" || go.get ("__printing__").string_value () == "on") { OCTAVE_QT_OPENGL_FBO fbo (pos(2), pos(3), OCTAVE_QT_OPENGL_FBO::Attachment::Depth); fbo.bind (); m_renderer.set_viewport (pos(2), pos(3)); m_renderer.set_device_pixel_ratio (dpr); m_renderer.draw (go); retval = m_renderer.get_pixels (pos(2), pos(3)); fbo.release (); } else { m_renderer.set_viewport (pos(2), pos(3)); m_renderer.set_device_pixel_ratio (dpr); m_renderer.draw (go); retval = m_renderer.get_pixels (pos(2), pos(3)); } end_rendering (); } return retval; } void GLCanvas::do_print (const QString& file_cmd, const QString& term, const graphics_handle& handle) { gh_manager& gh_mgr = m_interpreter.get_gh_manager (); octave::autolock guard (gh_mgr.graphics_lock ()); graphics_object go = gh_mgr.get_object (handle); if (go.valid_object ()) { graphics_object fig (go.get_ancestor ("figure")); // Make sure we have a valid current context if (! begin_rendering ()) error ("print: no valid OpenGL offscreen context"); try { if (fig.get ("visible").string_value () == "on") octave::gl2ps_print (m_glfcns, fig, file_cmd.toStdString (), term.toStdString ()); else { // When the figure is not visible, we use a framebuffer object // to make sure we are rendering on a suitably large frame. Matrix pos = fig.get ("position").matrix_value (); double dpr = fig.get ("__device_pixel_ratio__").double_value (); pos(2) *= dpr; pos(3) *= dpr; OCTAVE_QT_OPENGL_FBO fbo (pos(2), pos(3), OCTAVE_QT_OPENGL_FBO::Attachment::Depth); fbo.bind (); octave::gl2ps_print (m_glfcns, fig, file_cmd.toStdString (), term.toStdString ()); fbo.release (); } } catch (octave::execution_exception& ee) { emit interpreter_event ([=] (void) { // INTERPRETER THREAD throw ee; }); } end_rendering (); } } graphics_object GLCanvas::selectFromAxes (const graphics_object& ax, const QPoint& pt) { makeCurrent (); if (ax) { octave::opengl_selector s (m_glfcns); s.set_viewport (width (), height ()); return s.select (ax, pt.x (), height () - pt.y (), octave::select_ignore_hittest); } return graphics_object (); } void GLCanvas::drawZoomBox (const QPoint& p1, const QPoint& p2) { Matrix overlaycolor (3, 1); overlaycolor(0) = 0.45; overlaycolor(1) = 0.62; overlaycolor(2) = 0.81; double overlayalpha = 0.1; Matrix bordercolor = overlaycolor; double borderalpha = 0.9; double borderwidth = 1.5; m_renderer.draw_zoom_box (width (), height (), p1.x (), p1.y (), p2.x (), p2.y (), overlaycolor, overlayalpha, bordercolor, borderalpha, borderwidth); } void GLCanvas::paintGL (void) { canvasPaintEvent (); } void GLCanvas::mouseDoubleClickEvent (QMouseEvent *xevent) { canvasMouseDoubleClickEvent (xevent); } void GLCanvas::mouseMoveEvent (QMouseEvent *xevent) { canvasMouseMoveEvent (xevent); } void GLCanvas::mousePressEvent (QMouseEvent *xevent) { canvasMousePressEvent (xevent); } void GLCanvas::mouseReleaseEvent (QMouseEvent *xevent) { canvasMouseReleaseEvent (xevent); } void GLCanvas::wheelEvent (QWheelEvent *xevent) { canvasWheelEvent (xevent); } void GLCanvas::keyPressEvent (QKeyEvent *xevent) { if (! canvasKeyPressEvent (xevent)) OCTAVE_QT_OPENGL_WIDGET::keyPressEvent (xevent); } void GLCanvas::keyReleaseEvent (QKeyEvent *xevent) { if (! canvasKeyReleaseEvent (xevent)) OCTAVE_QT_OPENGL_WIDGET::keyReleaseEvent (xevent); } bool GLCanvas::begin_rendering (void) { bool retval = true; if (! isValid ()) { # if defined (HAVE_QT_OFFSCREEN) static bool os_ctx_ok = true; if (os_ctx_ok && ! m_os_context.isValid ()) { // Try to initialize offscreen context m_os_surface.create (); if (! m_os_context.create ()) { os_ctx_ok = false; return false; } } retval = m_os_context.makeCurrent (&m_os_surface); # else retval = false; # endif } else makeCurrent (); return retval; } void GLCanvas::end_rendering (void) { doneCurrent (); } }