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Fixed vertical slider

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This commit is contained in:
Sasha Koshka 2023-08-25 00:09:34 -04:00
parent 98bf754282
commit 05b6490095
1 changed files with 15 additions and 8 deletions
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23
slider.go
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@ -14,7 +14,7 @@ type Slider struct {
layout sliderLayout
dragging bool
dragOffset image.Point
on struct {
valueChange event.FuncBroadcaster
}
@ -34,7 +34,7 @@ func newSlider (orient string, value float64) *Slider {
vertical: orient == "vertical",
},
}
this.Add(this.handle)
this.SetFocusable(true)
this.SetPropagateEvents(false)
@ -74,18 +74,24 @@ func (this *Slider) OnValueChange (callback func ()) event.Cookie {
}
func (this *Slider) handleKeyDown (key input.Key, numpad bool) {
var increment float64; if this.layout.vertical {
increment = -0.05
} else {
increment = 0.05
}
switch key {
case input.KeyUp, input.KeyLeft:
if this.Modifiers().Alt {
this.SetValue(0)
} else {
this.SetValue(this.Value() - 0.05)
this.SetValue(this.Value() - increment)
}
case input.KeyDown, input.KeyRight:
if this.Modifiers().Alt {
this.SetValue(1)
} else {
this.SetValue(this.Value() + 0.05)
this.SetValue(this.Value() + increment)
}
case input.KeyHome:
this.SetValue(0)
@ -98,7 +104,7 @@ func (this *Slider) handleMouseDown (button input.Button) {
pointer := this.MousePosition()
handle := this.handle.Bounds()
var above, within bool
if pointer.In(handle) {
within = true
} else if this.layout.vertical {
@ -106,7 +112,7 @@ func (this *Slider) handleMouseDown (button input.Button) {
} else {
above = pointer.X < handle.Min.X
}
switch button {
case input.ButtonLeft:
if within {
@ -152,6 +158,7 @@ func (this *Slider) drag () {
if this.layout.vertical {
this.SetValue (
1 -
float64(pointer.Y) /
float64(gutter.Dy() - handle.Dy()))
} else {
@ -185,10 +192,10 @@ func (this sliderLayout) Arrange (hints tomo.LayoutHints, boxes []tomo.Box) {
if len(boxes) != 1 { return }
handle := image.Rectangle { Max: boxes[0].MinimumSize() }
gutter := hints.Bounds
if this.vertical {
height := gutter.Dy() - handle.Dy()
offset := int(float64(height) * this.value)
offset := int(float64(height) * (1 - this.value))
handle.Max.X = gutter.Dx()
boxes[0].SetBounds (
handle.