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5684185+vsariola@users.noreply.github.com
parent
8415660416
commit
ec8c51b003
@ -2,6 +2,7 @@ package gioui
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import (
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"image"
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"image/color"
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"math"
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"gioui.org/f32"
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@ -15,7 +16,7 @@ import (
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)
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type (
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Oscilloscope struct {
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OscilloscopeState struct {
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onceBtn *BoolClickable
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wrapBtn *BoolClickable
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lengthInBeatsNumber *NumberInput
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@ -29,14 +30,21 @@ type (
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}
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OscilloscopeStyle struct {
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Oscilloscope *Oscilloscope
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Wave tracker.RingBuffer[[2]float32]
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Theme *Theme
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CurveColors [2]color.NRGBA `yaml:",flow"`
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LimitColor color.NRGBA `yaml:",flow"`
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CursorColor color.NRGBA `yaml:",flow"`
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}
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Oscilloscope struct {
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State *OscilloscopeState
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Wave tracker.RingBuffer[[2]float32]
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Theme *Theme
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OscilloscopeStyle
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}
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)
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func NewOscilloscope(model *tracker.Model) *Oscilloscope {
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return &Oscilloscope{
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func NewOscilloscope(model *tracker.Model) *OscilloscopeState {
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return &OscilloscopeState{
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onceBtn: NewBoolClickable(model.SignalAnalyzer().Once().Bool()),
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wrapBtn: NewBoolClickable(model.SignalAnalyzer().Wrap().Bool()),
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lengthInBeatsNumber: NewNumberInput(model.SignalAnalyzer().LengthInBeats().Int()),
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@ -44,15 +52,15 @@ func NewOscilloscope(model *tracker.Model) *Oscilloscope {
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}
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}
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func LineOscilloscope(s *Oscilloscope, wave tracker.RingBuffer[[2]float32], th *Theme) *OscilloscopeStyle {
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return &OscilloscopeStyle{Oscilloscope: s, Wave: wave, Theme: th}
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func Scope(s *OscilloscopeState, wave tracker.RingBuffer[[2]float32], th *Theme) *Oscilloscope {
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return &Oscilloscope{State: s, Wave: wave, Theme: th}
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}
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func (s *OscilloscopeStyle) Layout(gtx C) D {
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wrapBtnStyle := ToggleButton(gtx, &s.Theme.Material, s.Oscilloscope.wrapBtn, "Wrap")
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onceBtnStyle := ToggleButton(gtx, &s.Theme.Material, s.Oscilloscope.onceBtn, "Once")
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triggerChannelStyle := NumericUpDown(&s.Theme.Material, s.Oscilloscope.triggerChannelNumber, "Trigger channel")
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lengthNumberStyle := NumericUpDown(&s.Theme.Material, s.Oscilloscope.lengthInBeatsNumber, "Buffer length in beats")
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func (s *Oscilloscope) Layout(gtx C) D {
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wrapBtnStyle := ToggleButton(gtx, s.Theme, s.State.wrapBtn, "Wrap")
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onceBtnStyle := ToggleButton(gtx, s.Theme, s.State.onceBtn, "Once")
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triggerChannelStyle := NumUpDown(s.Theme, s.State.triggerChannelNumber, "Trigger channel")
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lengthNumberStyle := NumUpDown(s.Theme, s.State.lengthInBeatsNumber, "Buffer length in beats")
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leftSpacer := layout.Spacer{Width: unit.Dp(6), Height: unit.Dp(24)}.Layout
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rightSpacer := layout.Spacer{Width: unit.Dp(6)}.Layout
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@ -82,13 +90,13 @@ func (s *OscilloscopeStyle) Layout(gtx C) D {
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)
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}
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func (s *OscilloscopeStyle) layoutWave(gtx C) D {
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func (s *Oscilloscope) layoutWave(gtx C) D {
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s.update(gtx)
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if gtx.Constraints.Max.X == 0 || gtx.Constraints.Max.Y == 0 {
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return D{}
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}
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defer clip.Rect(image.Rectangle{Max: gtx.Constraints.Max}).Push(gtx.Ops).Pop()
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event.Op(gtx.Ops, s.Oscilloscope)
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event.Op(gtx.Ops, s.State)
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paint.ColorOp{Color: s.Theme.Oscilloscope.CursorColor}.Add(gtx.Ops)
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cursorX := int(s.sampleToPx(gtx, float32(s.Wave.Cursor)))
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fillRect(gtx, clip.Rect{Min: image.Pt(cursorX, 0), Max: image.Pt(cursorX+1, gtx.Constraints.Max.Y)})
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@ -134,10 +142,10 @@ func fillRect(gtx C, rect clip.Rect) {
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stack.Pop()
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}
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func (o *OscilloscopeStyle) update(gtx C) {
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func (o *Oscilloscope) update(gtx C) {
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for {
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ev, ok := gtx.Event(pointer.Filter{
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Target: o.Oscilloscope,
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Target: o.State,
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Kinds: pointer.Scroll | pointer.Press | pointer.Drag | pointer.Release | pointer.Cancel,
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ScrollY: pointer.ScrollRange{Min: -1e6, Max: 1e6},
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})
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@ -148,58 +156,58 @@ func (o *OscilloscopeStyle) update(gtx C) {
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switch e.Kind {
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case pointer.Scroll:
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s1 := o.pxToSample(gtx, e.Position.X)
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o.Oscilloscope.xScale += min(max(-1, int(e.Scroll.Y)), 1)
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o.State.xScale += min(max(-1, int(e.Scroll.Y)), 1)
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s2 := o.pxToSample(gtx, e.Position.X)
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o.Oscilloscope.xOffset -= s1 - s2
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o.State.xOffset -= s1 - s2
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case pointer.Press:
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if e.Buttons&pointer.ButtonSecondary != 0 {
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o.Oscilloscope.xOffset = 0
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o.Oscilloscope.xScale = 0
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o.Oscilloscope.yScale = 0
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o.State.xOffset = 0
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o.State.xScale = 0
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o.State.yScale = 0
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}
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if e.Buttons&pointer.ButtonPrimary != 0 {
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o.Oscilloscope.dragging = true
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o.Oscilloscope.dragId = e.PointerID
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o.Oscilloscope.dragStartPoint = e.Position
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o.State.dragging = true
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o.State.dragId = e.PointerID
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o.State.dragStartPoint = e.Position
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}
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case pointer.Drag:
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if e.Buttons&pointer.ButtonPrimary != 0 && o.Oscilloscope.dragging && e.PointerID == o.Oscilloscope.dragId {
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deltaX := o.pxToSample(gtx, e.Position.X) - o.pxToSample(gtx, o.Oscilloscope.dragStartPoint.X)
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o.Oscilloscope.xOffset += deltaX
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if e.Buttons&pointer.ButtonPrimary != 0 && o.State.dragging && e.PointerID == o.State.dragId {
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deltaX := o.pxToSample(gtx, e.Position.X) - o.pxToSample(gtx, o.State.dragStartPoint.X)
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o.State.xOffset += deltaX
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num := o.yToAmp(gtx, e.Position.Y)
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den := o.yToAmp(gtx, o.Oscilloscope.dragStartPoint.Y)
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den := o.yToAmp(gtx, o.State.dragStartPoint.Y)
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if l := math.Abs(float64(num / den)); l > 1e-3 && l < 1e3 {
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o.Oscilloscope.yScale += math.Log(l)
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o.Oscilloscope.yScale = min(max(o.Oscilloscope.yScale, -1e3), 1e3)
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o.State.yScale += math.Log(l)
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o.State.yScale = min(max(o.State.yScale, -1e3), 1e3)
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}
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o.Oscilloscope.dragStartPoint = e.Position
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o.State.dragStartPoint = e.Position
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}
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case pointer.Release | pointer.Cancel:
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o.Oscilloscope.dragging = false
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o.State.dragging = false
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}
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}
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}
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}
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func (o *OscilloscopeStyle) scaleFactor() float32 {
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return float32(math.Pow(1.1, float64(o.Oscilloscope.xScale)))
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func (o *Oscilloscope) scaleFactor() float32 {
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return float32(math.Pow(1.1, float64(o.State.xScale)))
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}
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func (s *OscilloscopeStyle) pxToSample(gtx C, px float32) float32 {
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return px*s.scaleFactor()*float32(len(s.Wave.Buffer))/float32(gtx.Constraints.Max.X) - s.Oscilloscope.xOffset
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func (s *Oscilloscope) pxToSample(gtx C, px float32) float32 {
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return px*s.scaleFactor()*float32(len(s.Wave.Buffer))/float32(gtx.Constraints.Max.X) - s.State.xOffset
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}
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func (s *OscilloscopeStyle) sampleToPx(gtx C, sample float32) float32 {
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return (sample + s.Oscilloscope.xOffset) * float32(gtx.Constraints.Max.X) / float32(len(s.Wave.Buffer)) / s.scaleFactor()
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func (s *Oscilloscope) sampleToPx(gtx C, sample float32) float32 {
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return (sample + s.State.xOffset) * float32(gtx.Constraints.Max.X) / float32(len(s.Wave.Buffer)) / s.scaleFactor()
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}
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func (s *OscilloscopeStyle) ampToY(gtx C, amp float32) float32 {
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scale := float32(math.Exp(s.Oscilloscope.yScale))
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func (s *Oscilloscope) ampToY(gtx C, amp float32) float32 {
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scale := float32(math.Exp(s.State.yScale))
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return (1 - amp*scale) / 2 * float32(gtx.Constraints.Max.Y-1)
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}
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func (s *OscilloscopeStyle) yToAmp(gtx C, y float32) float32 {
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scale := float32(math.Exp(s.Oscilloscope.yScale))
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func (s *Oscilloscope) yToAmp(gtx C, y float32) float32 {
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scale := float32(math.Exp(s.State.yScale))
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return (1 - y/float32(gtx.Constraints.Max.Y-1)*2) / scale
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}
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