dear_node_editor/frame/
core.rs

1use super::validation::assert_finite_vec2;
2use crate::{EditorContext, context::CurrentEditorGuard, sys, vec2};
3use dear_imgui_rs::Ui;
4use std::{cell::Cell, ffi::CString};
5
6/// RAII token for an active node-editor frame.
7pub struct NodeEditorFrame<'ui> {
8    pub(super) _ui: &'ui Ui,
9    pub(super) _editor: &'ui EditorContext,
10    pub(super) suspended: Cell<bool>,
11    pub(super) ended: bool,
12}
13
14impl<'ui> NodeEditorFrame<'ui> {
15    pub(crate) fn new(
16        ui: &'ui Ui,
17        editor: &'ui EditorContext,
18        id: impl AsRef<str>,
19        size: [f32; 2],
20    ) -> Self {
21        assert_finite_vec2("Ui::node_editor()", "size", size);
22        let id = CString::new(id.as_ref()).expect("node editor id cannot contain NUL bytes");
23        {
24            let _current_editor = editor.bind_current("Ui::node_editor");
25            unsafe { sys::dne_begin(id.as_ptr(), vec2(size)) };
26        }
27        Self {
28            _ui: ui,
29            _editor: editor,
30            suspended: Cell::new(false),
31            ended: false,
32        }
33    }
34
35    pub(super) fn bind(&self, caller: &str) -> CurrentEditorGuard<'_> {
36        self._editor.bind_current(caller)
37    }
38
39    pub fn end(mut self) {
40        self.end_inner();
41    }
42
43    fn end_inner(&mut self) {
44        if !self.ended {
45            let _current_editor = self._editor.bind_current("NodeEditorFrame::end()");
46            unsafe { sys::dne_end() };
47            self.ended = true;
48        }
49    }
50}
51
52impl Drop for NodeEditorFrame<'_> {
53    fn drop(&mut self) {
54        self.end_inner();
55    }
56}
dear_node_editor/frame/core.rs

dear_node_editor/frame/
core.rs
