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vxfw(Spinner): fix last frame handling

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Tim Culverhouse 2024-12-31 10:36:16 -06:00
parent add88fcf53
commit 490bc13aed
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1 changed files with 10 additions and 9 deletions
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19
src/vxfw/Spinner.zig
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@ -15,12 +15,13 @@ 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,
/// Turns true when we start the spinner. Only turns false during a draw if the count == 0. This
/// ensures we draw one more time past the spinner stopping to clear the state
was_spinning: std.atomic.Value(bool) = .{ .raw = false },
/// Start, or add one, to the spinner counter. Thread safe.
pub fn start(self: *Spinner) ?vxfw.Command {
self.was_spinning.store(true, .unordered);
const count = self.count.fetchAdd(1, .monotonic);
if (count == 0) {
return vxfw.Tick.in(time_lapse, self.widget());
@ -28,15 +29,15 @@ 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);
}
pub fn wasSpinning(self: *Spinner) bool {
return self.was_spinning.load(.unordered);
}
pub fn widget(self: *Spinner) vxfw.Widget {
return .{
.userdata = self,
@ -56,9 +57,9 @@ pub fn handleEvent(self: *Spinner, ctx: *vxfw.EventContext, event: vxfw.Event) A
const count = self.count.load(.unordered);
if (count == 0) {
if (self.was_spinning) {
if (self.wasSpinning()) {
ctx.redraw = true;
self.was_spinning = false;
self.was_spinning.store(false, .unordered);
}
return;
}