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More tkinter #5784

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acdeadc
fix build
arihant2math May 12, 2025
4a0c51a
fix usage of Tcl_GetVar2Ex
arihant2math May 12, 2025
e46f033
no panic on mainloop
arihant2math May 12, 2025
4a88e3c
add static var
arihant2math May 12, 2025
41a921b
fix getvar
arihant2math May 12, 2025
6ad5a90
add globalgetvar support
arihant2math May 12, 2025
1407613
formatting
arihant2math May 12, 2025
7e85e04
address review
arihant2math May 19, 2025
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86 changes: 78 additions & 8 deletions stdlib/src/tkinter.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -72,6 +72,7 @@ mod _tkinter {
impl TclObject {}

static QUIT_MAIN_LOOP: AtomicBool = AtomicBool::new(false);
static ERROR_IN_CMD: AtomicBool = AtomicBool::new(false);

#[pyattr]
#[pyclass(name = "tkapp")]
Expand Down Expand Up @@ -125,7 +126,7 @@ mod _tkinter {
interactive: i32,
#[pyarg(any)]
wantobjects: i32,
#[pyarg(any, default = "true")]
#[pyarg(any, default = true)]
want_tk: bool,
#[pyarg(any)]
sync: i32,
Expand Down Expand Up @@ -168,6 +169,14 @@ mod _tkinter {
)))
}

#[derive(Debug, FromArgs)]
struct TkAppGetVarArgs {
#[pyarg(any)]
name: PyObjectRef,
#[pyarg(any, default)]
name2: Option<String>,
}

// TODO: DISALLOW_INSTANTIATION
#[pyclass(with(Constructor))]
impl TkApp {
Expand Down Expand Up @@ -247,21 +256,45 @@ mod _tkinter {
Self::unicode_from_string(s, len as _, vm)
}

#[pymethod]
fn getvar(&self, arg: PyObjectRef, vm: &VirtualMachine) -> PyResult<PyObjectRef> {
fn var_invoke(&self) {
if self.threaded && self.thread_id != unsafe { tk_sys::Tcl_GetCurrentThread() } {
// TODO: do stuff
}
}

fn inner_getvar(
&self,
args: TkAppGetVarArgs,
flags: u32,
vm: &VirtualMachine,
) -> PyResult<PyObjectRef> {
let TkAppGetVarArgs { name, name2 } = args;
// TODO: technically not thread safe
let name = varname_converter(arg, vm)?;
let name = varname_converter(name, vm)?;

let name = ffi::CString::new(name)?;
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I doubt this is buildable.

ToPyException requires vm

let name2 = ffi::CString::new(name2.unwrap_or_default())?;
let name2_ptr = if name2.is_empty() {
ptr::null()
} else {
name2.as_ptr()
};
let res = unsafe {
tk_sys::Tcl_GetVar2Ex(
self.interpreter,
ptr::null(),
name.as_ptr() as _,
tk_sys::TCL_LEAVE_ERR_MSG as _,
name2_ptr as _,
flags as _,
)
};
if res == ptr::null_mut() {
todo!();
// TODO: Should be tk error
unsafe {
let err_obj = tk_sys::Tcl_GetObjResult(self.interpreter);
let err_str_obj = tk_sys::Tcl_GetString(err_obj);
let err_cstr = ffi::CStr::from_ptr(err_str_obj as _);
return Err(vm.new_type_error(format!("{err_cstr:?}")));
}
}
let res = if self.want_objects {
self.from_object(res, vm)
Expand All @@ -271,6 +304,26 @@ mod _tkinter {
Ok(res)
}

#[pymethod]
fn getvar(&self, args: TkAppGetVarArgs, vm: &VirtualMachine) -> PyResult<PyObjectRef> {
self.var_invoke();
self.inner_getvar(args, tk_sys::TCL_LEAVE_ERR_MSG, vm)
}

#[pymethod]
fn globalgetvar(
&self,
args: TkAppGetVarArgs,
vm: &VirtualMachine,
) -> PyResult<PyObjectRef> {
self.var_invoke();
self.inner_getvar(
args,
tk_sys::TCL_LEAVE_ERR_MSG | tk_sys::TCL_GLOBAL_ONLY,
vm,
)
}

#[pymethod]
fn getint(&self, arg: PyObjectRef, vm: &VirtualMachine) -> PyResult<PyObjectRef> {
if let Some(int) = arg.downcast_ref::<PyInt>() {
Expand All @@ -289,7 +342,22 @@ mod _tkinter {
#[pymethod]
fn mainloop(&self, threshold: Option<i32>) -> PyResult<()> {
let threshold = threshold.unwrap_or(0);
todo!();
// self.dispatching = true;
QUIT_MAIN_LOOP.store(false, Ordering::Relaxed);
while unsafe { tk_sys::Tk_GetNumMainWindows() } > threshold
&& !QUIT_MAIN_LOOP.load(Ordering::Relaxed)
&& !ERROR_IN_CMD.load(Ordering::Relaxed)
{
let mut result = 0;
if self.threaded {
result = unsafe { tk_sys::Tcl_DoOneEvent(0 as _) } as i32;
} else {
result = unsafe { tk_sys::Tcl_DoOneEvent(tk_sys::TCL_DONT_WAIT as _) } as i32;
// TODO: sleep for the proper time
std::thread::sleep(std::time::Duration::from_millis(1));
}
}
Ok(())
}

#[pymethod]
Expand All @@ -306,6 +374,8 @@ mod _tkinter {
let threaded = {
let part1 = String::from("tcl_platform");
let part2 = String::from("threaded");
let part1 = ffi::CString::new(part1)?;
let part2 = ffi::CString::new(part2)?;
let part1_ptr = part1.as_ptr();
let part2_ptr = part2.as_ptr();
tk_sys::Tcl_GetVar2Ex(
Expand Down
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