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widget: fix build on Go 1.17

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Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2022-02-09 21:04:18 +01:00
parent b162ed56d7
commit 912ddb95f8
1 changed files with 8 additions and 2 deletions
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widget/editor.go
+8 -2
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@@ -742,9 +742,15 @@ func (e *Editor) PaintCaret(gtx layout.Context) {
}
}
// TODO: copied from package math. Remove when Go 1.18 is minimum.
const (
intSize = 32 << (^uint(0) >> 63) // 32 or 64
maxInt = 1<<(intSize-1) - 1
)
// Len is the length of the editor contents, in runes.
func (e *Editor) Len() int {
end := e.closestPosition(combinedPos{runes: math.MaxInt})
end := e.closestPosition(combinedPos{runes: maxInt})
return end.runes
}
@@ -1051,7 +1057,7 @@ func (e *Editor) moveStart(selAct selectionAction) {
func (e *Editor) moveEnd(selAct selectionAction) {
caret := e.closestPosition(combinedPos{runes: e.caret.start})
caret = e.closestPosition(combinedPos{lineCol: screenPos{X: math.MaxInt, Y: caret.lineCol.Y}})
caret = e.closestPosition(combinedPos{lineCol: screenPos{X: maxInt, Y: caret.lineCol.Y}})
e.caret.start = caret.runes
l := e.lines[caret.lineCol.Y]
a := align(e.Alignment, l.Width, e.viewSize.X)