32 lines
959 B
Go
32 lines
959 B
Go
package internal
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import (
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"math"
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"time"
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"github.com/egoist/mygo/ui"
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)
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// Ease moves e's background, border and text color fg to their targets over d.
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func Ease(e *ui.Element, d time.Duration, fg ui.Color) *ui.Element {
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if d > 0 {
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e.Transition(ui.ElementTransition{Colors: true, Duration: d})
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}
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ch := func(key string, v uint8) uint8 {
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return uint8(math.Round(float64(e.Animate(key, float32(v), d))))
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}
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return e.TextColor(ui.Color{R: ch("mujica.fg.r", fg.R), G: ch("mujica.fg.g", fg.G), B: ch("mujica.fg.b", fg.B), A: ch("mujica.fg.a", fg.A)})
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}
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// PopIn fades popup e in over d from the frame it appeared and returns the progress, 0 to 1.
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func PopIn(c *ui.Context, e *ui.Element, d time.Duration) float32 {
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born := ui.Local(e, "mujica.popin", func() time.Time { return c.Now() })
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p := float32(1)
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if t := float32(c.Now().Sub(*born)) / float32(max(d, 1)); d > 0 && t < 1 {
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p = ui.EaseOut(t)
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c.AnimationFrame()
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}
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e.Opacity(p)
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return p
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}
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