Piano: Add Toggle parameter widget

This is for enum widgets; though positioning is not correct as
checkboxes need more options for text-less layout.

1 files changed, 39 insertions, 0 deletions

diff --git a/Userland/Applications/Piano/ProcessorParameterWidget/Toggle.h b/Userland/Applications/Piano/ProcessorParameterWidget/Toggle.h
new file mode 100644
index 0000000000..0ca2eaa5f4
--- /dev/null
+++ b/Userland/Applications/Piano/ProcessorParameterWidget/Toggle.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2022, kleines Filmröllchen <filmroellchen@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibCore/Object.h>
+#include <LibDSP/ProcessorParameter.h>
+#include <LibGUI/CheckBox.h>
+#include <LibGUI/Widget.h>
+
+class ProcessorParameterToggle : public GUI::CheckBox {
+    C_OBJECT(ProcessorParameterToggle)
+
+public:
+    ProcessorParameterToggle(DSP::ProcessorBooleanParameter& parameter)
+        : CheckBox("")
+        , m_parameter(parameter)
+    {
+        on_checked = [this](auto checked) {
+            if (m_currently_setting_from_ui)
+                return;
+            m_currently_setting_from_ui = true;
+            m_parameter.set_value(checked);
+            m_currently_setting_from_ui = false;
+        };
+        m_parameter.register_change_listener([this](auto muted) {
+            set_checked(muted, GUI::AllowCallback::No);
+        });
+
+        set_checked(parameter.value());
+    }
+
+private:
+    DSP::ProcessorBooleanParameter& m_parameter;
+    bool m_currently_setting_from_ui { false };
+};