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annotate libgui/graphics/SliderControl.cc @ 31649:deb553ac2c54

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maint: Merge stable to default.
author John W. Eaton <jwe@octave.org>
date Tue, 06 Dec 2022 15:45:27 -0500
parents 431f80aba37a 29d734430e5f
children 5f11de0e7440
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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 (HAVE_CONFIG_H)
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27 # include "config.h"
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28 #endif
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29
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30 #include <QScrollBar>
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31
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32 #include "Container.h"
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33 #include "SliderControl.h"
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34 #include "QtHandlesUtils.h"
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35
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36 #include "graphics.h"
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37 #include "interpreter.h"
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38
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39 #define RANGE_INT_MAX 1000000
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40
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41 OCTAVE_BEGIN_NAMESPACE(octave)
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42
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43 SliderControl *
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44 SliderControl::create (octave::interpreter& interp,
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45 const graphics_object& go)
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46 {
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47 Object *parent = parentObject (interp, go);
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48
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49 if (parent)
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50 {
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51 Container *container = parent->innerContainer ();
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52
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53 if (container)
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54 return new SliderControl (interp, go,
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55 new QScrollBar (container));
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56 }
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57
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58 return nullptr;
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59 }
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60
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61 SliderControl::SliderControl (octave::interpreter& interp,
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62 const graphics_object& go,
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63 QAbstractSlider *slider)
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64 : BaseControl (interp, go, slider), m_blockUpdates (false)
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65 {
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66 uicontrol::properties& up = properties<uicontrol> ();
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67
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68 slider->setTracking (false);
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69 Matrix bb = up.get_boundingbox ();
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70 bool vertical_slider = ( bb(2) < bb(3) );
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71 slider->setOrientation (vertical_slider ? Qt::Vertical : Qt::Horizontal);
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72 if (vertical_slider)
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73 slider->setInvertedAppearance (true); // Matlab compatibility
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74 Matrix steps = up.get_sliderstep ().matrix_value ();
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75 slider->setMinimum (0);
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76 slider->setMaximum (RANGE_INT_MAX);
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77 slider->setSingleStep (octave::math::round (steps(0) * RANGE_INT_MAX));
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78 slider->setPageStep (octave::math::round (steps(1) * RANGE_INT_MAX));
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79 Matrix value = up.get_value ().matrix_value ();
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80 if (value.numel () > 0)
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81 {
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82 double dmin = up.get_min (), dmax = up.get_max ();
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83
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84 slider->setValue (octave::math::round (((value(0) - dmin) / (dmax - dmin))
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85 * RANGE_INT_MAX));
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86 }
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87
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88 connect (slider, &QAbstractSlider::valueChanged,
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89 this, &SliderControl::valueChanged);
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90 }
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91
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92 SliderControl::~SliderControl (void)
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93 { }
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94
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95 void
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96 SliderControl::update (int pId)
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97 {
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98 uicontrol::properties& up = properties<uicontrol> ();
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99 QScrollBar *slider = qWidget<QScrollBar> ();
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100
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101 switch (pId)
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102 {
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103 case uicontrol::properties::ID_SLIDERSTEP:
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104 {
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105 Matrix steps = up.get_sliderstep ().matrix_value ();
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106
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107 slider->setSingleStep (octave::math::round (steps(0) * RANGE_INT_MAX));
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108 slider->setPageStep (octave::math::round (steps(1) * RANGE_INT_MAX));
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109 }
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110 break;
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111
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112 case uicontrol::properties::ID_VALUE:
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113 {
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114 Matrix value = up.get_value ().matrix_value ();
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115 double dmax = up.get_max (), dmin = up.get_min ();
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116
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117 if (value.numel () > 0)
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118 {
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119 int ival = octave::math::round (((value(0) - dmin) / (dmax - dmin))
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120 * RANGE_INT_MAX);
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121
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122 m_blockUpdates = true;
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123 slider->setValue (ival);
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124 m_blockUpdates = false;
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125 }
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126 }
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127 break;
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128
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129 default:
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130 BaseControl::update (pId);
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131 break;
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132 }
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133 }
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134
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135 void
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136 SliderControl::valueChanged (int ival)
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137 {
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138 if (! m_blockUpdates)
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139 {
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140 gh_manager& gh_mgr = m_interpreter.get_gh_manager ();
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141
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142 octave::autolock guard (gh_mgr.graphics_lock ());
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143
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144 graphics_object go = object ();
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145
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146 if (go.valid_object ())
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147 {
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148 uicontrol::properties& up = Utils::properties<uicontrol> (go);
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149
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150 Matrix value = up.get_value ().matrix_value ();
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151 double dmin = up.get_min (), dmax = up.get_max ();
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152
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153 int ival_tmp = (value.numel () > 0 ?
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154 octave::math::round (((value(0) - dmin) / (dmax - dmin))
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155 * RANGE_INT_MAX) :
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156 0);
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157
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158 if (ival != ival_tmp || value.numel () > 0)
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159 {
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160 double dval = dmin + (ival * (dmax - dmin) / RANGE_INT_MAX);
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161
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162 emit gh_set_event (m_handle, "value", octave_value (dval));
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163 emit gh_callback_event (m_handle, "callback");
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164 }
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165 }
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166 }
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167 }
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168
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169 OCTAVE_END_NAMESPACE(octave)