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Piano: Create controller widgets for processor parameters

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These widgets attach to a processor parameter and keep the two sides in
sync. They will become very useful for smart processor interfaces.
This commit is contained in:
kleines Filmröllchen 2021-09-28 18:00:41 +02:00 • committed by Linus Groh
parent 481f7d6afa
commit 8f8ae5eb53
6 changed files with 90 additions and 8 deletions
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38
Userland/Applications/Piano/ProcessorParameterSlider.cpp
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@ -1,38 +0,0 @@
/*
* Copyright (c) 2021, kleines Filmröllchen <malu.bertsch@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "ProcessorParameterSlider.h"
ProcessorParameterSlider::ProcessorParameterSlider(Orientation orientation, LibDSP::ProcessorRangeParameter& parameter, RefPtr<GUI::Label> value_label)
: Slider(orientation)
, m_parameter(parameter)
, m_value_label(move(value_label))
{
set_range(m_parameter.min_value().raw(), m_parameter.max_value().raw());
set_value(m_parameter.value().raw());
set_step((m_parameter.min_value() - m_parameter.max_value()).raw() / 128);
set_tooltip(m_parameter.name());
m_value_label->set_text(String::formatted("{:.2f}", static_cast<double>(m_parameter)));
on_change = [this](auto value) {
LibDSP::ParameterFixedPoint real_value;
real_value.raw() = value;
m_parameter.set_value_sneaky(real_value, LibDSP::Detail::ProcessorParameterSetValueTag {});
if (m_value_label) {
double value = static_cast<double>(m_parameter);
String label_text = String::formatted("{:.2f}", value);
// FIXME: This is a magic value; we know that with normal font sizes, the label will disappear starting from approximately this length.
// Can we do this dynamically?
if (label_text.length() > 7)
m_value_label->set_text(String::formatted("{:.0f}", value));
else
m_value_label->set_text(label_text);
}
};
m_parameter.did_change_value = [this](auto value) {
set_value(value.raw());
};
}