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00e13b5b27
That's the standard naming convention, but I didn't follow it when originally creating LibDSP and nobody corrected me, so here I am one year later :^)
57 lines
2.2 KiB
C++
57 lines
2.2 KiB
C++
/*
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* Copyright (c) 2021, kleines Filmröllchen <filmroellchen@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "Slider.h"
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#include "WidgetWithLabel.h"
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#include <AK/FixedPoint.h>
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#include <AK/Math.h>
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ProcessorParameterSlider::ProcessorParameterSlider(Orientation orientation, DSP::ProcessorRangeParameter& parameter, RefPtr<GUI::Label> value_label)
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: Slider(orientation)
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, WidgetWithLabel(move(value_label))
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, m_parameter(parameter)
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{
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if (!is_logarithmic()) {
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set_range(m_parameter.min_value().raw(), m_parameter.max_value().raw());
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set_value(m_parameter.value().raw());
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set_step((m_parameter.min_value() - m_parameter.max_value()).raw() / slider_steps);
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} else {
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auto min_log = m_parameter.min_value().log2().raw();
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auto max_log = m_parameter.max_value().log2().raw();
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auto value_log = m_parameter.value().log2().raw();
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set_range(min_log, max_log);
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set_value(value_log);
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set_step((min_log - max_log) / slider_steps);
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}
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set_tooltip(m_parameter.name());
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m_value_label->set_text(String::formatted("{:.2f}", static_cast<double>(m_parameter)));
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on_change = [this](auto value) {
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DSP::ParameterFixedPoint real_value;
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real_value.raw() = value;
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if (is_logarithmic())
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// FIXME: Implement exponential for fixed point
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real_value = exp(static_cast<double>(real_value));
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m_parameter.set_value_sneaky(real_value, DSP::Detail::ProcessorParameterSetValueTag {});
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if (m_value_label) {
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double value = static_cast<double>(m_parameter);
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String label_text = String::formatted("{:.2f}", value);
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// FIXME: This is a magic value; we know that with normal font sizes, the label will disappear starting from approximately this length.
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// Can we do this dynamically?
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if (label_text.length() > 7)
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m_value_label->set_text(String::formatted("{:.0f}", value));
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else
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m_value_label->set_text(label_text);
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}
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};
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m_parameter.did_change_value = [this](auto value) {
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if (!is_logarithmic())
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set_value(value.raw());
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else
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set_value(value.log2().raw());
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};
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}
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