pv/prop/int.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2013 Joel Holdsworth <joel@airwebreathe.org.uk>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <cassert>
  21 #include <cstdint>
  22
  23 #include <QSpinBox>
  24
  25 #include "int.hpp"
  26
  27 using boost::optional;
  28 using std::max;
  29 using std::min;
  30 using std::pair;
  31
  32 namespace pv {
  33 namespace prop {
  34
  35 Int::Int(QString name,
  36         QString desc,
  37         QString suffix,
  38         optional< pair<int64_t, int64_t> > range,
  39         Getter getter,
  40         Setter setter) :
  41         Property(name, desc, getter, setter),
  42         suffix_(suffix),
  43         range_(range),
  44         spin_box_(nullptr)
  45 {
  46 }
  47
  48 QWidget* Int::get_widget(QWidget *parent, bool auto_commit)
  49 {
  50         int64_t int_val = 0, range_min = 0;
  51         uint64_t range_max = 0;
  52
  53         if (spin_box_)
  54                 return spin_box_;
  55
  56         if (!getter_)
  57                 return nullptr;
  58
  59         value_ = getter_();
  60
  61         GVariant *value = value_.gobj();
  62         if (!value)
  63                 return nullptr;
  64
  65         spin_box_ = new QSpinBox(parent);
  66         spin_box_->setSuffix(suffix_);
  67
  68         const GVariantType *const type = g_variant_get_type(value);
  69         assert(type);
  70
  71         if (g_variant_type_equal(type, G_VARIANT_TYPE_BYTE)) {
  72                 int_val = g_variant_get_byte(value);
  73                 range_min = 0, range_max = UINT8_MAX;
  74         } else if (g_variant_type_equal(type, G_VARIANT_TYPE_INT16)) {
  75                 int_val = g_variant_get_int16(value);
  76                 range_min = INT16_MIN, range_max = INT16_MAX;
  77         } else if (g_variant_type_equal(type, G_VARIANT_TYPE_UINT16)) {
  78                 int_val = g_variant_get_uint16(value);
  79                 range_min = 0, range_max = UINT16_MAX;
  80         } else if (g_variant_type_equal(type, G_VARIANT_TYPE_INT32)) {
  81                 int_val = g_variant_get_int32(value);
  82                 range_min = INT32_MIN, range_max = INT32_MAX;
  83         } else if (g_variant_type_equal(type, G_VARIANT_TYPE_UINT32)) {
  84                 int_val = g_variant_get_uint32(value);
  85                 range_min = 0, range_max = UINT32_MAX;
  86         } else if (g_variant_type_equal(type, G_VARIANT_TYPE_INT64)) {
  87                 int_val = g_variant_get_int64(value);
  88                 range_min = INT64_MIN, range_max = INT64_MAX;
  89         } else if (g_variant_type_equal(type, G_VARIANT_TYPE_UINT64)) {
  90                 int_val = g_variant_get_uint64(value);
  91                 range_min = 0, range_max = UINT64_MAX;
  92         } else {
  93                 // Unexpected value type.
  94                 assert(false);
  95         }
  96
  97         // @todo Sigrok supports 64-bit quantities, but Qt does not have a
  98         // standard widget to allow the values to be modified over the full
  99         // 64-bit range on 32-bit machines. To solve the issue we need a
 100         // custom widget.
 101
 102         range_min = max(range_min, (int64_t)INT_MIN);
 103         range_max = min(range_max, (uint64_t)INT_MAX);
 104
 105         if (range_)
 106                 spin_box_->setRange((int)range_->first, (int)range_->second);
 107         else
 108                 spin_box_->setRange((int)range_min, (int)range_max);
 109
 110         spin_box_->setValue((int)int_val);
 111
 112         if (auto_commit)
 113                 connect(spin_box_, SIGNAL(valueChanged(int)),
 114                         this, SLOT(on_value_changed(int)));
 115
 116         return spin_box_;
 117 }
 118
 119 void Int::commit()
 120 {
 121         assert(setter_);
 122
 123         if (!spin_box_)
 124                 return;
 125
 126         GVariant *new_value = nullptr;
 127         const GVariantType *const type = g_variant_get_type(value_.gobj());
 128         assert(type);
 129
 130         if (g_variant_type_equal(type, G_VARIANT_TYPE_BYTE))
 131                 new_value = g_variant_new_byte(spin_box_->value());
 132         else if (g_variant_type_equal(type, G_VARIANT_TYPE_INT16))
 133                 new_value = g_variant_new_int16(spin_box_->value());
 134         else if (g_variant_type_equal(type, G_VARIANT_TYPE_UINT16))
 135                 new_value = g_variant_new_uint16(spin_box_->value());
 136         else if (g_variant_type_equal(type, G_VARIANT_TYPE_INT32))
 137                 new_value = g_variant_new_int32(spin_box_->value());
 138         else if (g_variant_type_equal(type, G_VARIANT_TYPE_UINT32))
 139                 new_value = g_variant_new_uint32(spin_box_->value());
 140         else if (g_variant_type_equal(type, G_VARIANT_TYPE_INT64))
 141                 new_value = g_variant_new_int64(spin_box_->value());
 142         else if (g_variant_type_equal(type, G_VARIANT_TYPE_UINT64))
 143                 new_value = g_variant_new_uint64(spin_box_->value());
 144         else {
 145                 // Unexpected value type.
 146                 assert(false);
 147         }
 148
 149         assert(new_value);
 150
 151         value_ = Glib::VariantBase(new_value);
 152
 153         setter_(value_);
 154 }
 155
 156 void Int::on_value_changed(int)
 157 {
 158         commit();
 159 }
 160
 161 }  // namespace prop
 162 }  // namespace pv