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feat(gioui): make split bars snap to window edges

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vsariola 2021-05-12 23:14:48 +03:00
parent 203e8a3ccc
commit 8a94058d44
1 changed files with 22 additions and 0 deletions
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22
tracker/gioui/split.go
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@ -68,6 +68,7 @@ func (s *Split) Layout(gtx layout.Context, first, second layout.Widget) layout.D
} else { } else {
s.dragCoord = e.Position.Y s.dragCoord = e.Position.Y
} }
s.drag = true
case pointer.Drag: case pointer.Drag:
if s.dragID != e.PointerID { if s.dragID != e.PointerID {
@ -94,6 +95,27 @@ func (s *Split) Layout(gtx layout.Context, first, second layout.Widget) layout.D
} }
} }
low := -1 + float32(bar)/float32(coord)*2
const snapMargin = 0.1
if s.Ratio < low {
s.Ratio = low
}
if s.Ratio > 1 {
s.Ratio = 1
}
if s.Ratio < low+snapMargin {
firstSize = 0
secondOffset = bar
secondSize = coord - bar
} else if s.Ratio > 1-snapMargin {
firstSize = coord - bar
secondOffset = coord
secondSize = 0
}
// register for input // register for input
var barRect image.Rectangle var barRect image.Rectangle
if s.Axis == layout.Horizontal { if s.Axis == layout.Horizontal {