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package layout
import (
"fmt"
"volute/gui/text"
)
// SplitFunc represents a way to split a space among a number of elements.
// The length of the returned slice must be equal to the number of elements.
// The sum of all elements of the returned slice must be eqal to the space.
type SplitFunc func(elements int, space int) []int
var _ SplitFunc = EvenSplit
// EvenSplit is a SplitFunc used to split a space (almost) evenly among the elements.
// It is almost evenly because width may not be divisible by elements.
func EvenSplit(elements int, width int) []int {
if elements <= 0 {
panic(fmt.Errorf("EvenSplit: elements must be greater than 0"))
}
ret := make([]int, elements)
for elements > 0 {
v := width / elements
width -= v
elements -= 1
ret[elements] = v
}
return ret
}
func TextRowSplit(elements int, space int) []int {
bounds := make([]int, elements)
height := text.Size("1").Y
for i := 0; i < elements && space > 0; i++ {
bounds[i] = min(height, space)
space -= bounds[i]
}
return bounds
}
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