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annotate libgui/graphics/SliderControl.cc @ 18505:fb96b7f55242 gui-release

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rename file to avoid clash on case-insenstive filesystems (bug #41658) * libgui/graphics/QtHandlesUtils.cc: Rename from Utils.cc. * libgui/graphics/QtHandlesUtils.h: Rename from Utils.h. Change all uses. * libgui/graphics/module.mk: Update lists.
author John W. Eaton <jwe@octave.org>
date Fri, 21 Feb 2014 11:35:36 -0500
parents 523878f76518
children fe0e34be5576
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
18498
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1 /*
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2
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3 Copyright (C) 2011-2014 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 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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26
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27 #include <QScrollBar>
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28
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29 #include "Container.h"
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30 #include "SliderControl.h"
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31 #include "QtHandlesUtils.h"
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32
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33 #define RANGE_INT_MAX 1000000
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34
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35 namespace QtHandles
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36 {
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37
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38 SliderControl* SliderControl::create (const graphics_object& go)
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39 {
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40 Object* parent = Object::parentObject (go);
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41
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42 if (parent)
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43 {
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44 Container* container = parent->innerContainer ();
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45
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46 if (container)
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47 return new SliderControl (go, new QScrollBar (container));
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48 }
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49
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50 return 0;
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51 }
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52
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53 SliderControl::SliderControl (const graphics_object& go,
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54 QAbstractSlider* slider)
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55 : BaseControl (go, slider), m_blockUpdates (false)
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56 {
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57 uicontrol::properties& up = properties<uicontrol> ();
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58
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59 slider->setTracking (false);
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60 Matrix bb = up.get_boundingbox ();
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61 slider->setOrientation (bb(2) > bb(3) ? Qt::Horizontal : Qt::Vertical);
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62 Matrix steps = up.get_sliderstep ().matrix_value ();
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63 slider->setMinimum (0);
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64 slider->setMaximum (RANGE_INT_MAX);
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65 slider->setSingleStep (xround (steps(0) * RANGE_INT_MAX));
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66 slider->setPageStep (xround (steps(1) * RANGE_INT_MAX));
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67 Matrix value = up.get_value ().matrix_value ();
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68 if (value.numel () > 0)
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69 {
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70 double dmin = up.get_min (), dmax = up.get_max ();
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71
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72 slider->setValue (xround (((value(0) - dmin) / (dmax - dmin))
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73 * RANGE_INT_MAX));
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74 }
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75
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76 connect (slider, SIGNAL (valueChanged (int)), SLOT (valueChanged (int)));
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77 }
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78
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79 SliderControl::~SliderControl (void)
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80 {
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81 }
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82
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83 void SliderControl::update (int pId)
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84 {
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85 uicontrol::properties& up = properties<uicontrol> ();
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86 QScrollBar* slider = qWidget<QScrollBar> ();
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87
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88 switch (pId)
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89 {
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90 case uicontrol::properties::ID_SLIDERSTEP:
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91 {
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92 Matrix steps = up.get_sliderstep ().matrix_value ();
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93
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94 slider->setSingleStep (xround (steps(0) * RANGE_INT_MAX));
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95 slider->setPageStep (xround (steps(1) * RANGE_INT_MAX));
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96 }
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97 break;
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98 case uicontrol::properties::ID_VALUE:
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99 {
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100 Matrix value = up.get_value ().matrix_value ();
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101 double dmax = up.get_max (), dmin = up.get_min ();
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102
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103 if (value.numel () > 0)
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104 {
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105 int ival = xround (((value(0) - dmin) / (dmax - dmin))
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106 * RANGE_INT_MAX);
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107
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108 m_blockUpdates = true;
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109 slider->setValue (ival);
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110 m_blockUpdates = false;
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111 }
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112 }
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113 break;
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114 default:
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115 BaseControl::update (pId);
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116 break;
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117 }
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118 }
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119
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120 void SliderControl::valueChanged (int ival)
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121 {
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122 if (! m_blockUpdates)
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123 {
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124 gh_manager::auto_lock lock;
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125 graphics_object go = object ();
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126
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127 if (go.valid_object ())
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128 {
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129 uicontrol::properties& up = Utils::properties<uicontrol> (go);
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130
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131 Matrix value = up.get_value ().matrix_value ();
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132 double dmin = up.get_min (), dmax = up.get_max ();
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133
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134 int ival_tmp = (value.numel () > 0 ?
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135 xround (((value(0) - dmin) / (dmax - dmin))
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136 * RANGE_INT_MAX) :
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137 0);
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138
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139 if (ival != ival_tmp || value.numel () > 0)
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140 {
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141 double dval = dmin + (ival * (dmax - dmin) / RANGE_INT_MAX);
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142
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143 gh_manager::post_set (m_handle, "value", octave_value (dval));
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144 gh_manager::post_callback (m_handle, "callback");
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145 }
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146 }
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147 }
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148 }
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149
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150 }; // namespace QtHandles