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Move ParamSetter creation to its own struct

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This cannot be called from the trait object.
This commit is contained in:
Robbert van der Helm 2022-02-06 01:52:16 +01:00
parent f1b12e747c
commit 6db85c535f
1 changed files with 11 additions and 17 deletions
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28
src/context.rs
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@ -66,18 +66,8 @@ pub trait ProcessContext {
// The implementing wrapper can assume that everything is being called from the main thread. Since
// NIH-plug doesn't own the GUI event loop, this invariant cannot be part of the interface.
pub trait GuiContext: Send + Sync + 'static {
/// Retrieve a safe setter for updating the plugin's parameters. Modifying parameters here will
/// broadcast the changes both to the host and to your plugin's
/// [crate::param::internals::Params] object.
fn setter(&self) -> ParamSetter
where
Self: Sized,
{
ParamSetter { context: self }
}
/// Inform the host a parameter will be automated. Use [ParamSetter::begin_set_parameter]
/// instead for a safe, user friendly API.
/// Inform the host a parameter will be automated. Create a [ParamSetter] and use
/// [ParamSetter::begin_set_parameter] instead for a safe, user friendly API.
///
/// # Safety
///
@ -85,8 +75,8 @@ pub trait GuiContext: Send + Sync + 'static {
/// mostly marked as unsafe for API reasons.
unsafe fn raw_begin_set_parameter(&self, param: ParamPtr);
/// Inform the host a parameter is being automated with an already normalized value. Use
/// [ParamSetter::set_parameter] instead for a safe, user friendly API.
/// Inform the host a parameter is being automated with an already normalized value. Create a
/// [ParamSetter] and use [ParamSetter::set_parameter] instead for a safe, user friendly API.
///
/// # Safety
///
@ -94,8 +84,8 @@ pub trait GuiContext: Send + Sync + 'static {
/// mostly marked as unsafe for API reasons.
unsafe fn raw_set_parameter_normalized(&self, param: ParamPtr, normalized: f32);
/// Inform the host a parameter has been automated. Use [ParamSetter::end_set_parameter] instead
/// for a safe, user friendly API.
/// Inform the host a parameter has been automated. Create a [ParamSetter] and use
/// [ParamSetter::end_set_parameter] instead for a safe, user friendly API.
///
/// # Safety
///
@ -111,7 +101,11 @@ pub struct ParamSetter<'a> {
context: &'a dyn GuiContext,
}
impl ParamSetter<'_> {
impl<'a> ParamSetter<'a> {
pub fn new(context: &'a dyn GuiContext) -> Self {
Self { context }
}
/// Inform the host that you will start automating a parmater. This needs to be called before
/// calling [Self::set_parameter()] for the specified parameter.
pub fn begin_set_parameter<P: Param>(&self, param: &P) {