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Cursive::step() now returns true if something interesting happened. (#332)

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Also make `Cursive::refresh()` public so that callers can force a refresh.

Fixes #331
This commit is contained in:
Arnav Singh 2019-03-30 11:24:47 -07:00 committed by Alexandre Bury
parent 88037717e6
commit 070508f0cf
1 changed files with 11 additions and 5 deletions
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16
src/cursive.rs
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@ -809,8 +809,11 @@ impl Cursive {
/// Useful if you need tighter control on the event loop. /// Useful if you need tighter control on the event loop.
/// Otherwise, [`run(&mut self)`] might be more convenient. /// Otherwise, [`run(&mut self)`] might be more convenient.
/// ///
/// Returns `true` if an input event or callback was received
/// during this step, and `false` otherwise.
///
/// [`run(&mut self)`]: #method.run /// [`run(&mut self)`]: #method.run
pub fn step(&mut self) { pub fn step(&mut self) -> bool {
// Things are boring if nothing significant happened. // Things are boring if nothing significant happened.
let mut boring = true; let mut boring = true;
@ -820,7 +823,7 @@ impl Cursive {
self.on_event(event); self.on_event(event);
if !self.running { if !self.running {
return; return true;
} }
} }
@ -830,7 +833,7 @@ impl Cursive {
cb.call_box(self); cb.call_box(self);
if !self.running { if !self.running {
return; return true;
} }
} }
@ -845,7 +848,6 @@ impl Cursive {
.unwrap_or(false) .unwrap_or(false)
{ {
// We deserve to draw something! // We deserve to draw something!
self.boring_frame_count = 0;
self.refresh(); self.refresh();
} }
@ -853,10 +855,14 @@ impl Cursive {
std::thread::sleep(Duration::from_millis(INPUT_POLL_DELAY_MS)); std::thread::sleep(Duration::from_millis(INPUT_POLL_DELAY_MS));
self.boring_frame_count += 1; self.boring_frame_count += 1;
} }
!boring
} }
/// Refresh the screen with the current view tree state. /// Refresh the screen with the current view tree state.
fn refresh(&mut self) { pub fn refresh(&mut self) {
self.boring_frame_count = 0;
// Do we need to redraw everytime? // Do we need to redraw everytime?
// Probably, actually. // Probably, actually.
// TODO: Do we need to re-layout everytime? // TODO: Do we need to re-layout everytime?