2 * This file is part of the PulseView project.
4 * Copyright (C) 2013 Joel Holdsworth <joel@airwebreathe.org.uk>
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.
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.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 #include "sweeptimingwidget.hpp"
37 SweepTimingWidget::SweepTimingWidget(const char *suffix,
46 setContentsMargins(0, 0, 0, 0);
48 value_.setDecimals(0);
49 value_.setSuffix(QString::fromUtf8(suffix));
51 connect(&list_, SIGNAL(currentIndexChanged(int)),
52 this, SIGNAL(value_changed()));
53 connect(&value_, SIGNAL(editingFinished()),
54 this, SIGNAL(value_changed()));
58 layout_.addWidget(&list_);
59 layout_.addWidget(&value_);
64 void SweepTimingWidget::show_none()
71 void SweepTimingWidget::show_min_max_step(uint64_t min, uint64_t max,
77 value_type_ = MinMaxStep;
79 value_.setRange(min, max);
80 value_.setSingleStep(step);
86 void SweepTimingWidget::show_list(const uint64_t *vals, size_t count)
91 for (size_t i = 0; i < count; i++)
93 char *const s = sr_si_string_u64(vals[i], suffix_);
94 list_.addItem(QString::fromUtf8(s),
95 qVariantFromValue(vals[i]));
103 void SweepTimingWidget::show_125_list(uint64_t min, uint64_t max)
107 // Create a 1-2-5-10 list of entries.
108 const unsigned int FineScales[] = {1, 2, 5};
109 uint64_t value, decade;
111 vector<uint64_t> values;
113 // Compute the starting decade
114 for (decade = 1; decade * 10 <= min; decade *= 10);
116 // Compute the first entry
117 for (fine = 0; fine < countof(FineScales); fine++)
118 if (FineScales[fine] * decade >= min)
121 assert(fine < countof(FineScales));
123 // Add the minimum entry if it's not on the 1-2-5 progression
124 if (min != FineScales[fine] * decade)
125 values.push_back(min);
127 while ((value = FineScales[fine] * decade) < max) {
128 values.push_back(value);
129 if (++fine >= countof(FineScales))
130 fine = 0, decade *= 10;
134 values.push_back(max);
136 // Make a C array, and give it to the sweep timing widget
137 uint64_t *const values_array = new uint64_t[values.size()];
138 copy(values.begin(), values.end(), values_array);
139 show_list(values_array, values.size());
140 delete[] values_array;
143 uint64_t SweepTimingWidget::value() const
151 return (uint64_t)value_.value();
155 const int index = list_.currentIndex();
156 return (index >= 0) ? list_.itemData(
157 index).value<uint64_t>() : 0;
161 // Unexpected value type
167 void SweepTimingWidget::set_value(uint64_t value)
169 value_.setValue(value);
171 int best_match = list_.count() - 1;
172 int64_t best_variance = INT64_MAX;
174 for (int i = 0; i < list_.count(); i++) {
175 const int64_t this_variance = abs(
176 (int64_t)value - list_.itemData(i).value<int64_t>());
177 if (this_variance < best_variance) {
178 best_variance = this_variance;
183 list_.setCurrentIndex(best_match);