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Get a reference to the host's IRunLoop

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This commit is contained in:
Robbert van der Helm 2022-04-20 16:53:06 +02:00
parent 55aabcea31
commit f3bb552cfe
1 changed files with 27 additions and 3 deletions
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30
src/wrapper/vst3/view.rs
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@ -18,6 +18,11 @@ use crate::plugin::{Editor, ParentWindowHandle, Vst3Plugin};
// Alias needed for the VST3 attribute macro
use vst3_sys as vst3_com;
// Thanks for putting this behind a platform-specific ifdef...
// NOTE: This should also be used on the BSDs, but vst3-sys exposes these interfaces only for Linux
#[cfg(all(target_os = "linux"))]
use vst3_sys::gui::linux::IRunLoop;
// Window handle type constants missing from vst3-sys
#[allow(unused)]
const VST3_PLATFORM_HWND: &str = "HWND";
@ -39,7 +44,10 @@ pub(crate) struct WrapperView<P: Vst3Plugin> {
editor_handle: RwLock<Option<Box<dyn Any>>>,
/// The `IPlugFrame` instance passed by the host during [IPlugView::set_frame()].
pub plug_frame: RwLock<Option<VstPtr<dyn IPlugFrame>>>,
plug_frame: RwLock<Option<VstPtr<dyn IPlugFrame>>>,
#[cfg(all(target_os = "linux"))]
run_loop: RwLock<Option<VstPtr<dyn IRunLoop>>>,
/// The DPI scaling factor as passed to the [IPlugViewContentScaleSupport::set_scale_factor()]
/// function. Defaults to 1.0, and will be kept there on macOS. When reporting and handling size
/// the sizes communicated to and from the DAW should be scaled by this factor since NIH-plug's
@ -54,6 +62,8 @@ impl<P: Vst3Plugin> WrapperView<P> {
editor,
RwLock::new(None),
RwLock::new(None),
#[cfg(all(target_os = "linux"))]
RwLock::new(None),
AtomicF32::new(1.0),
)
}
@ -262,8 +272,22 @@ impl<P: Vst3Plugin> IPlugView for WrapperView<P> {
// The correct argument type is missing from the bindings
let frame: SharedVstPtr<dyn IPlugFrame> = mem::transmute(frame);
match frame.upgrade() {
Some(frame) => *self.plug_frame.write() = Some(frame.into()),
None => *self.plug_frame.write() = None,
Some(frame) => {
// On Linux the host will expose another interface that lets us run code on the
// host's GUI thread. REAPER will segfault when we don't do this for resizes.
#[cfg(all(target_os = "linux"))]
{
*self.run_loop.write() = frame.cast().map(VstPtr::from);
}
*self.plug_frame.write() = Some(VstPtr::from(frame));
}
None => {
#[cfg(all(target_os = "linux"))]
{
*self.run_loop.write() = None;
}
*self.plug_frame.write() = None;
}
}
kResultOk