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tomo-old/elements/basic/listentry.go

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package basic
import "image"
import "git.tebibyte.media/sashakoshka/tomo"
import "git.tebibyte.media/sashakoshka/tomo/theme"
import "git.tebibyte.media/sashakoshka/tomo/artist"
var listEntryCase = theme.C("basic", "listEntry")
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// ListEntry is an item that can be added to a list.
type ListEntry struct {
drawer artist.TextDrawer
bounds image.Rectangle
textPoint image.Point
text string
forcedMinimumWidth int
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onSelect func ()
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}
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func NewListEntry (text string, onSelect func ()) (entry ListEntry) {
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entry = ListEntry {
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text: text,
onSelect: onSelect,
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}
entry.drawer.SetText([]rune(text))
entry.drawer.SetFace(theme.FontFaceRegular())
entry.updateBounds()
return
}
func (entry *ListEntry) Collapse (width int) {
if entry.forcedMinimumWidth == width { return }
entry.forcedMinimumWidth = width
entry.updateBounds()
}
func (entry *ListEntry) updateBounds () {
entry.bounds = image.Rectangle { }
entry.bounds.Max.Y = entry.drawer.LineHeight().Round()
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if entry.forcedMinimumWidth > 0 {
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entry.bounds.Max.X = entry.forcedMinimumWidth
} else {
entry.bounds.Max.X = entry.drawer.LayoutBounds().Dx()
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}
_, inset := theme.ItemPattern(theme.PatternState {
})
entry.bounds.Max.Y += inset[0] + inset[2]
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entry.textPoint =
image.Pt(inset[3], inset[0]).
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Sub(entry.drawer.LayoutBounds().Min)
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}
func (entry *ListEntry) Draw (
destination tomo.Canvas,
offset image.Point,
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focused bool,
on bool,
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) (
updatedRegion image.Rectangle,
) {
pattern, _ := theme.ItemPattern(theme.PatternState {
Case: listEntryCase,
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Focused: focused,
On: on,
})
artist.FillRectangle (
destination,
pattern,
entry.Bounds().Add(offset))
foreground, _ := theme.ForegroundPattern (theme.PatternState {
Case: listEntryCase,
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Focused: focused,
On: on,
})
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return entry.drawer.Draw (
destination,
foreground,
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offset.Add(entry.textPoint))
}
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func (entry *ListEntry) RunSelect () {
if entry.onSelect != nil {
entry.onSelect()
}
}
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func (entry *ListEntry) Bounds () (bounds image.Rectangle) {
return entry.bounds
}