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annotate libgui/graphics/Canvas.h @ 31193:6bcc5e6d77fe stable

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author Markus Mützel <markus.muetzel@gmx.de>
date Thu, 18 Aug 2022 08:40:57 +0200
parents 796f54d4ddbf
children ca7d58406f82 9089bd969b37
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2011-2022 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
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25
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26 #if ! defined (octave_Canvas_h)
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27 #define octave_Canvas_h 1
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28
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29 #include <QObject>
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30 #include <QPoint>
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31
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32 #include "event-manager.h"
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33 #include "graphics.h"
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34
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35 #include "Figure.h"
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36
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37 class QKeyEvent;
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38 class QMouseEvent;
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39 class QWheelEvent;
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40 class QWidget;
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41
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42 class octave_value_list;
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43
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44 namespace octave
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45 {
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46 class base_qobject;
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47 class interpreter;
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48 }
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49
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50 namespace octave
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51 {
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52
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53 class Canvas : public QObject
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54 {
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55 Q_OBJECT
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56
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57 public:
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58 enum EventMask
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59 {
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60 KeyPress = 0x01,
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61 KeyRelease = 0x02
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62 };
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63
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64 public:
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65 virtual ~Canvas (void) = default;
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66
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67 void redraw (bool sync = false);
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68 void blockRedraw (bool block = true);
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69
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70 void print (const QString& file_cmd, const QString& term)
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71 {
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72 do_print (file_cmd, term, m_handle);
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73 }
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74
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75 void addEventMask (int m) { m_eventMask |= m; }
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76 void clearEventMask (int m) { m_eventMask &= (~m); }
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77 void setEventMask (int m) { m_eventMask = m; }
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78
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79 void setCursor (MouseMode mode, std::string fallback,
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80 QImage cdata, Matrix hotspot);
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81
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82 virtual QWidget * qWidget (void) = 0;
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83
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84 static Canvas *
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85 create (octave::base_qobject& oct_qobj, octave::interpreter& interp,
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86 const graphics_handle& handle, QWidget *parent,
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87 const std::string& name);
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88
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89 virtual uint8NDArray getPixels (void) { return do_getPixels (m_handle); };
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90
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91 signals:
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92
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93 void interpreter_event (const octave::fcn_callback& fcn);
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94 void interpreter_event (const octave::meth_callback& meth);
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95
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96 void gh_callback_event (const graphics_handle& h, const std::string& name);
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97
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98 void gh_callback_event (const graphics_handle& h, const std::string& name,
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99 const octave_value& data);
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100
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101 void gh_set_event (const graphics_handle& h, const std::string& name,
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102 const octave_value& value);
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103
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104 void gh_set_event (const graphics_handle& h, const std::string& name,
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105 const octave_value& value, bool notify_toolkit);
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106
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107 void gh_set_event (const graphics_handle& h, const std::string& name,
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108 const octave_value& value, bool notify_toolkit,
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109 bool redraw_figure);
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110 protected:
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111 virtual void draw (const graphics_handle& handle) = 0;
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112 virtual void drawZoomBox (const QPoint& p1, const QPoint& p2) = 0;
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113 virtual void resize (int x, int y, int width, int height) = 0;
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114 virtual graphics_object selectFromAxes (const graphics_object& ax,
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115 const QPoint& pt) = 0;
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116 virtual uint8NDArray do_getPixels (const graphics_handle& handle) = 0;
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117 virtual void do_print (const QString& file_cmd, const QString& term,
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118 const graphics_handle& handle) = 0;
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119
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120 protected:
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121 Canvas (octave::base_qobject& oct_qobj, octave::interpreter& interp,
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122 const graphics_handle& handle)
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123 : m_octave_qobj (oct_qobj),
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124 m_interpreter (interp),
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125 m_handle (handle),
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126 m_redrawBlocked (false),
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127 m_mouseMode (NoMode),
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128 m_clickMode (false),
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129 m_eventMask (0),
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130 m_rectMode (false)
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131 { }
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132
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133 void canvasToggleAxes (const graphics_handle& handle);
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134 void canvasToggleGrid (const graphics_handle& handle);
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135 void canvasAutoAxes (const graphics_handle& handle);
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136 void canvasPaintEvent (void);
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137 void canvasMouseDoubleClickEvent (QMouseEvent *event);
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138 void canvasMouseMoveEvent (QMouseEvent *event);
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139 void canvasMousePressEvent (QMouseEvent *event);
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140 void canvasMouseReleaseEvent (QMouseEvent *event);
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141 void canvasWheelEvent (QWheelEvent *event);
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142 bool canvasKeyPressEvent (QKeyEvent *event);
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143 bool canvasKeyReleaseEvent (QKeyEvent *event);
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144
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145 void updateCurrentPoint (const graphics_object& fig,
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146 const graphics_object& obj, QMouseEvent *event);
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147 void updateCurrentPoint (const graphics_object& fig,
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148 const graphics_object& obj);
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Michael Goffioul <michael.goffioul@gmail.com>
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149
23449
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150 void select_object (graphics_object obj, QMouseEvent *event,
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151 graphics_object& currentObj, graphics_object& axesObj,
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152 bool axes_only = false,
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Pantxo Diribarne <pantxo.diribarne@gmail.com>
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153 std::vector<std::string> omit = std::vector<std::string> ());
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154
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155 protected:
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156 octave::base_qobject& m_octave_qobj;
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157 octave::interpreter& m_interpreter;
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158
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159 private:
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160
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161 QCursor make_cursor (const QString& name, int hot_x = -1, int hot_y = -1);
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162
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163 graphics_handle m_handle;
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164 bool m_redrawBlocked;
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165 MouseMode m_mouseMode;
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166 bool m_clickMode; // True: ZoomIn, False: ZoomOut
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167 QPoint m_mouseAnchor;
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168 QPoint m_mouseCurrent;
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169 graphics_handle m_mouseAxes;
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170 int m_eventMask;
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171 bool m_rectMode;
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172 };
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173
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174 }
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175
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176 #endif