graphix_package_gui/widgets/
scrollable.rs

1use super::{compile, GuiW, GuiWidget, IcedElement, Message};
2use crate::types::{LengthV, ScrollDirectionV};
3use anyhow::{Context, Result};
4use arcstr::ArcStr;
5use graphix_compiler::expr::ExprId;
6use graphix_rt::{Callable, CallableId, GXExt, GXHandle, Ref, TRef};
7use iced_widget as widget;
8use netidx::{protocol::valarray::ValArray, publisher::Value};
9use tokio::try_join;
10
11pub(crate) struct ScrollableW<X: GXExt> {
12    gx: GXHandle<X>,
13    child_ref: Ref<X>,
14    child: GuiW<X>,
15    direction: TRef<X, ScrollDirectionV>,
16    width: TRef<X, LengthV>,
17    height: TRef<X, LengthV>,
18    on_scroll: Ref<X>,
19    on_scroll_callable: Option<Callable<X>>,
20}
21
22impl<X: GXExt> ScrollableW<X> {
23    pub(crate) async fn compile(gx: GXHandle<X>, source: Value) -> Result<GuiW<X>> {
24        let [(_, child), (_, direction), (_, height), (_, on_scroll), (_, width)] =
25            source.cast_to::<[(ArcStr, u64); 5]>().context("scrollable flds")?;
26        let (child_ref, direction, height, on_scroll, width) = try_join! {
27            gx.compile_ref(child),
28            gx.compile_ref(direction),
29            gx.compile_ref(height),
30            gx.compile_ref(on_scroll),
31            gx.compile_ref(width),
32        }?;
33        let compiled_child = compile_child!(gx, child_ref, "scrollable child");
34        let on_scroll_callable =
35            compile_callable!(gx, on_scroll, "scrollable on_scroll");
36        Ok(Box::new(Self {
37            gx: gx.clone(),
38            child_ref,
39            child: compiled_child,
40            direction: TRef::new(direction).context("scrollable tref direction")?,
41            width: TRef::new(width).context("scrollable tref width")?,
42            height: TRef::new(height).context("scrollable tref height")?,
43            on_scroll,
44            on_scroll_callable,
45        }))
46    }
47}
48
49impl<X: GXExt> GuiWidget<X> for ScrollableW<X> {
50    fn handle_update(
51        &mut self,
52        rt: &tokio::runtime::Handle,
53        id: ExprId,
54        v: &Value,
55    ) -> Result<bool> {
56        let mut changed = false;
57        changed |= self
58            .direction
59            .update(id, v)
60            .context("scrollable update direction")?
61            .is_some();
62        changed |= self.width.update(id, v).context("scrollable update width")?.is_some();
63        changed |=
64            self.height.update(id, v).context("scrollable update height")?.is_some();
65        update_child!(self, rt, id, v, changed, child_ref, child, "scrollable child recompile");
66        update_callable!(self, rt, id, v, on_scroll, on_scroll_callable, "scrollable on_scroll recompile");
67        Ok(changed)
68    }
69
70    fn editor_action(
71        &mut self,
72        id: ExprId,
73        action: &iced_widget::text_editor::Action,
74    ) -> Option<(CallableId, Value)> {
75        self.child.editor_action(id, action)
76    }
77
78    fn view(&self) -> IcedElement<'_> {
79        let mut sc = widget::Scrollable::new(self.child.view());
80        if let Some(dir) = self.direction.t.as_ref() {
81            sc = sc.direction(dir.0);
82        }
83        if let Some(w) = self.width.t.as_ref() {
84            sc = sc.width(w.0);
85        }
86        if let Some(h) = self.height.t.as_ref() {
87            sc = sc.height(h.0);
88        }
89        if let Some(c) = &self.on_scroll_callable {
90            let id = c.id();
91            sc = sc.on_scroll(move |viewport| {
92                let off = viewport.absolute_offset();
93                let offset_val: Value = [
94                    (arcstr::literal!("x"), Value::F64(off.x as f64)),
95                    (arcstr::literal!("y"), Value::F64(off.y as f64)),
96                ]
97                .into();
98                Message::Call(id, ValArray::from_iter([offset_val]))
99            });
100        }
101        sc.into()
102    }
103}
graphix_package_gui/widgets/scrollable.rs

graphix_package_gui/widgets/
scrollable.rs
