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annotate libgui/graphics/Canvas.h @ 20115:908b68a98ba6

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initial implementation of text annotations with Qt plotting * Canvas.h, Canvas.cc (Canvas::annotation_callback): New function. (Canvas::canvasMousePressEvent): Handle TextMode case. * MouseModeActionGroup.cc (MouseModeActionGroup::MouseModeActionGroup): Don't disable text annotation button.
author John W. Eaton <jwe@octave.org>
date Thu, 16 Apr 2015 08:47:20 -0400
parents f0e61a67ad9f
children c6c5cb9c4743
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1 /*
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2
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3 Copyright (C) 2011-2015 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 the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 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 WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 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 #ifndef __QtHandles_Canvas__
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24 #define __QtHandles_Canvas__ 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) { }
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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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73
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74 protected:
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75 virtual void draw (const graphics_handle& handle) = 0;
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76 virtual void drawZoomBox (const QPoint& p1, const QPoint& p2) = 0;
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77 virtual void resize (int x, int y, int width, int height) = 0;
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78 virtual graphics_object selectFromAxes (const graphics_object& ax,
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79 const QPoint& pt) = 0;
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80
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81 protected:
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82 Canvas (const graphics_handle& handle)
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83 : m_handle (handle),
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84 m_redrawBlocked (false),
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85 m_mouseMode (NoMode),
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86 m_eventMask (0)
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87 { }
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88
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89 void canvasToggleAxes (const graphics_handle& handle);
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90 void canvasToggleGrid (const graphics_handle& handle);
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91 void canvasAutoAxes (const graphics_handle& handle);
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92 void canvasPaintEvent (void);
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93 void canvasMouseDoubleClickEvent (QMouseEvent* event);
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94 void canvasMouseMoveEvent (QMouseEvent* event);
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95 void canvasMousePressEvent (QMouseEvent* event);
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96 void canvasMouseReleaseEvent (QMouseEvent* event);
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97 void canvasWheelEvent (QWheelEvent* event);
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98 bool canvasKeyPressEvent (QKeyEvent* event);
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99 bool canvasKeyReleaseEvent (QKeyEvent* event);
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100
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101 void updateCurrentPoint (const graphics_object& fig,
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102 const graphics_object& obj, QMouseEvent *event);
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103
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104 void annotation_callback (const octave_value_list& args);
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105
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106 private:
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107 graphics_handle m_handle;
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108 bool m_redrawBlocked;
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109 MouseMode m_mouseMode;
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110 QPoint m_mouseAnchor;
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111 QPoint m_mouseCurrent;
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112 graphics_handle m_mouseAxes;
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113 int m_eventMask;
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114 };
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115
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116 }; // namespace QtHandles
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117
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118 #endif