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annotate libgui/graphics/Canvas.h @ 23535:2aab625b502c

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Add getframe function for opengl based toolkits (bug #48195) * graphics.in.h (graphics_toolkit::get_pixels, base_graphics_toolkit::get_pixels): new virtual methods * graphics.cc (F__get_frame__): new function. * Backend.h/cc (Backend::get_pixels): implement new method * ObjectProxy.h/cc (ObjectProxy::get_pixels): new method, invoke directly Figure object slotGetPixels in Qt::BlockingQueuedConnection mode * Figure.h/cc (Figure::slotGetPixels): new public slot * Canvas.h (Canvas::getPixels, Canvas::do_getPixels): new methods * GLCanvas.h/cc (GLCanvas::do_getPixels): reimplemented method, use opengl_renderer to draw object and get_pixels * __init_fltk__.cc (fltk_graphics_toolkit::get_pixels, figure_manager::get_pixels, figure_manager::do_get_pixels, plot_window::get_pixels, OpenGL_fltk::get_pixels): new methods * gl-renderer.h/cc (opengl_renderer::get_pixels): new method, read pixels in the current opengl scene * getframe.m: new function file * image.txi: add getframe doc * NEWS: announce new function
author Pantxo Diribarne <pantxo.diribarne@gmail.com>
date Tue, 23 May 2017 15:01:27 +0200
parents c763214a8260
children 194eb4bd202b
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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 <http://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_Canvas_h)
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24 #define octave_Canvas_h 1
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25
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26 #include <QPoint>
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27
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28 #include "graphics.h"
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29
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30 #include "Figure.h"
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31
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32 class QKeyEvent;
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33 class QMouseEvent;
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34 class QWheelEvent;
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35 class QWidget;
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36
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37 class octave_value_list;
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38
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39 namespace QtHandles
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40 {
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41
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42 class Canvas
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43 {
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44 public:
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45 enum EventMask
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46 {
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47 KeyPress = 0x01,
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48 KeyRelease = 0x02
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49 };
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50
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51 public:
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52 virtual ~Canvas (void) = default;
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53
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54 void redraw (bool sync = false);
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55 void blockRedraw (bool block = true);
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56
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57 void print (const QString& file_cmd, const QString& term);
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58
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59 void addEventMask (int m) { m_eventMask |= m; }
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60 void clearEventMask (int m) { m_eventMask &= (~m); }
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61 void setEventMask (int m) { m_eventMask = m; }
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62
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63 void setCursor (MouseMode mode);
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64
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65 virtual QWidget * qWidget (void) = 0;
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66
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67 static Canvas * create (const std::string& name, QWidget *parent,
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68 const graphics_handle& handle);
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69
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70 virtual void toggleAxes (const graphics_handle& handle) = 0;
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71 virtual void toggleGrid (const graphics_handle& handle) = 0;
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72 virtual void autoAxes (const graphics_handle& handle) = 0;
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74 virtual uint8NDArray getPixels (void) { return do_getPixels (m_handle); };
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75
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76 protected:
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77 virtual void draw (const graphics_handle& handle) = 0;
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78 virtual void drawZoomBox (const QPoint& p1, const QPoint& p2) = 0;
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79 virtual void resize (int x, int y, int width, int height) = 0;
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80 virtual graphics_object selectFromAxes (const graphics_object& ax,
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81 const QPoint& pt) = 0;
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82 virtual uint8NDArray do_getPixels (const graphics_handle& handle) = 0;
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83
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84 protected:
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85 Canvas (const graphics_handle& handle)
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86 : m_handle (handle),
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87 m_redrawBlocked (false),
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88 m_mouseMode (NoMode),
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89 m_clickMode (false),
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90 m_eventMask (0),
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91 m_rectMode (false)
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92 { }
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93
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94 void canvasToggleAxes (const graphics_handle& handle);
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95 void canvasToggleGrid (const graphics_handle& handle);
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96 void canvasAutoAxes (const graphics_handle& handle);
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97 void canvasPaintEvent (void);
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98 void canvasMouseDoubleClickEvent (QMouseEvent *event);
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99 void canvasMouseMoveEvent (QMouseEvent *event);
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100 void canvasMousePressEvent (QMouseEvent *event);
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101 void canvasMouseReleaseEvent (QMouseEvent *event);
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102 void canvasWheelEvent (QWheelEvent *event);
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103 bool canvasKeyPressEvent (QKeyEvent *event);
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104 bool canvasKeyReleaseEvent (QKeyEvent *event);
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105
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106 void updateCurrentPoint (const graphics_object& fig,
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107 const graphics_object& obj, QMouseEvent *event);
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108 void updateCurrentPoint (const graphics_object& fig,
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109 const graphics_object& obj);
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110
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111 void annotation_callback (const octave_value_list& args);
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112 void select_object (graphics_object obj, QMouseEvent *event,
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113 graphics_object& currentObj, graphics_object& axesObj,
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114 bool axes_only = false,
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115 std::vector<std::string> omit = std::vector<std::string> ());
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116
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117 private:
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118 graphics_handle m_handle;
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119 bool m_redrawBlocked;
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120 MouseMode m_mouseMode;
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121 bool m_clickMode; // True: ZoomIn, False: ZoomOut
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122 QPoint m_mouseAnchor;
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123 QPoint m_mouseCurrent;
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124 graphics_handle m_mouseAxes;
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125 int m_eventMask;
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126 bool m_rectMode;
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127 };
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128
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129 }
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130
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131 #endif