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vxfw(Spinner): redraw after last spin

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Tim Culverhouse 2024-12-31 10:21:40 -06:00
parent 671048c8f0
commit add88fcf53
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1 changed files with 16 additions and 1 deletions
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17
src/vxfw/Spinner.zig
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@ -15,6 +15,10 @@ style: vaxis.Style = .{},
/// The frame index
frame: u4 = 0,
/// If the last time we handled a tick we were spinning. This is used to draw one time after we stop
/// spinning
was_spinning: bool = false,
/// Start, or add one, to the spinner counter. Thread safe.
pub fn start(self: *Spinner) ?vxfw.Command {
const count = self.count.fetchAdd(1, .monotonic);
@ -24,6 +28,10 @@ pub fn start(self: *Spinner) ?vxfw.Command {
return null;
}
pub fn isSpinning(self: *Spinner) bool {
return self.count.load(.unordered) > 0;
}
/// Reduce one from the spinner counter. The spinner will stop when it reaches 0. Thread safe
pub fn stop(self: *Spinner) void {
self.count.store(self.count.load(.unordered) -| 1, .unordered);
@ -47,7 +55,14 @@ pub fn handleEvent(self: *Spinner, ctx: *vxfw.EventContext, event: vxfw.Event) A
.tick => {
const count = self.count.load(.unordered);
if (count == 0) return;
if (count == 0) {
if (self.was_spinning) {
ctx.redraw = true;
self.was_spinning = false;
}
return;
}
self.was_spinning = true;
// Update frame
self.frame += 1;
if (self.frame >= frames.len) self.frame = 0;