Python: Add more type stubs to the internal Rust API

api/python/interpreter.rs

@@ -6,6 +6,7 @@ use std::collections::HashMap;
 use std::path::PathBuf;
 use std::rc::Rc;
 
+use pyo3_stub_gen::derive::gen_stub_pyclass_enum;
 use slint_interpreter::{ComponentHandle, Value};
 
 use i_slint_compiler::langtype::Type;
@@ -244,6 +245,7 @@ impl ComponentDefinition {
     }
 }
 
+#[gen_stub_pyclass_enum]
 #[pyclass(name = "ValueType")]
 pub enum PyValueType {
     Void,

api/python/lib.rs

@@ -1,7 +1,7 @@
 // Copyright © SixtyFPS GmbH <info@slint.dev>
 // SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Slint-Royalty-free-2.0 OR LicenseRef-Slint-Software-3.0
 
-use pyo3_stub_gen::define_stub_info_gatherer;
+use pyo3_stub_gen::{define_stub_info_gatherer, derive::gen_stub_pyfunction};
 
 mod image;
 mod interpreter;
@@ -22,6 +22,7 @@ fn quit_event_loop() -> Result<(), errors::PyEventLoopError> {
     slint_interpreter::quit_event_loop().map_err(|e| e.into())
 }
 
+#[gen_stub_pyfunction]
 #[pyfunction]
 fn set_xdg_app_id(app_id: String) -> Result<(), errors::PyPlatformError> {
     slint_interpreter::set_xdg_app_id(app_id).map_err(|e| e.into())

api/python/slint/slint.pyi

@@ -131,3 +131,22 @@ class Timer:
     def set_interval(self, interval:datetime.timedelta) -> None:
         ...
 
+def set_xdg_app_id(app_id: str):
+    ...
+
+class PyModelBase:
+    ...
+
+class PyStruct:
+    ...
+
+
+class ValueType(Enum):
+    Void = auto()
+    Number = auto()
+    String = auto()
+    Bool = auto()
+    Model = auto()
+    Struct = auto()
+    Brush = auto()
+    Image = auto()

api/python/value.rs

@@ -3,9 +3,11 @@
 
 use pyo3::prelude::*;
 use pyo3::types::PyDict;
+use pyo3_stub_gen::{derive::gen_stub_pyclass, derive::gen_stub_pymethods};
 
 use std::collections::HashMap;
 
+#[gen_stub_pyclass]
 pub struct PyValue(pub slint_interpreter::Value);
 struct PyValueRef<'a>(&'a slint_interpreter::Value);
 
@@ -120,12 +122,14 @@ impl From<slint_interpreter::Value> for PyValue {
     }
 }
 
+#[gen_stub_pyclass]
 #[pyclass(subclass, unsendable)]
 #[derive(Clone, Default)]
 pub struct PyStruct {
     data: slint_interpreter::Struct,
 }
 
+#[gen_stub_pymethods]
 #[pymethods]
 impl PyStruct {
     #[new]
@@ -171,11 +175,13 @@ impl From<slint_interpreter::Struct> for PyStruct {
     }
 }
 
+#[gen_stub_pyclass]
 #[pyclass(unsendable)]
 struct PyStructFieldIterator {
     inner: std::collections::hash_map::IntoIter<String, slint_interpreter::Value>,
 }
 
+#[gen_stub_pymethods]
 #[pymethods]
 impl PyStructFieldIterator {
     fn __iter__(slf: PyRef<'_, Self>) -> PyRef<'_, Self> {