drafting

2026-02-17 13:43:15 -05:00 · 2025-12-30 22:43:35 +02:00
parent f765d75fde
commit 2303e89bbd
10 changed files with 330 additions and 110 deletions
--- a/tracker/gioui/specanalyzer.go
+++ b/tracker/gioui/specanalyzer.go
@ -0,0 +1,106 @@
+package gioui
+
+import (
+	"image"
+
+	"gioui.org/layout"
+	"gioui.org/op/clip"
+	"gioui.org/op/paint"
+	"gioui.org/unit"
+	"github.com/vsariola/sointu/tracker"
+)
+
+type (
+	SpectrumState struct {
+		resolutionNumber *NumericUpDownState
+		smoothingBtn     *Clickable
+		chnModeBtn       *Clickable
+	}
+)
+
+func NewSpectrumState() *SpectrumState {
+	return &SpectrumState{
+		resolutionNumber: NewNumericUpDownState(),
+		smoothingBtn:     new(Clickable),
+		chnModeBtn:       new(Clickable),
+	}
+}
+
+func (s *SpectrumState) Layout(gtx C) D {
+	s.Update(gtx)
+	t := TrackerFromContext(gtx)
+	leftSpacer := layout.Spacer{Width: unit.Dp(6), Height: unit.Dp(24)}.Layout
+	rightSpacer := layout.Spacer{Width: unit.Dp(6)}.Layout
+
+	var chnModeTxt string = "???"
+	switch tracker.SpecChnMode(t.Model.SpecAnChannelsInt().Value()) {
+	case tracker.SpecChnModeCombine:
+		chnModeTxt = "Combine"
+	case tracker.SpecChnModeSeparate:
+		chnModeTxt = "Separate"
+	case tracker.SpecChnModeLeft:
+		chnModeTxt = "Left"
+	case tracker.SpecChnModeRight:
+		chnModeTxt = "Right"
+	case tracker.SpecChnModeOff:
+		chnModeTxt = "Off"
+	}
+
+	var smoothTxt string = "???"
+	switch tracker.SpecSmoothing(t.Model.SpecAnSmoothing().Value()) {
+	case tracker.SpecSmoothingSlow:
+		smoothTxt = "Slow"
+	case tracker.SpecSmoothingMedium:
+		smoothTxt = "Medium"
+	case tracker.SpecSmoothingFast:
+		smoothTxt = "Fast"
+	}
+
+	resolution := NumUpDown(t.Model.SpecAnResolution(), t.Theme, s.resolutionNumber, "Resolution")
+	chnModeBtn := Btn(t.Theme, &t.Theme.Button.Filled, s.chnModeBtn, chnModeTxt, "Channel mode")
+	smoothBtn := Btn(t.Theme, &t.Theme.Button.Filled, s.smoothingBtn, smoothTxt, "Smoothing")
+
+	return layout.Flex{Axis: layout.Vertical}.Layout(gtx,
+		layout.Flexed(1, s.drawSpectrum),
+		layout.Rigid(func(gtx C) D {
+			return layout.Flex{Axis: layout.Horizontal, Alignment: layout.Middle}.Layout(gtx,
+				layout.Rigid(leftSpacer),
+				layout.Flexed(1, func(gtx C) D { return D{Size: gtx.Constraints.Min} }),
+				layout.Rigid(chnModeBtn.Layout),
+				layout.Rigid(smoothBtn.Layout),
+				layout.Rigid(resolution.Layout),
+				layout.Rigid(rightSpacer),
+			)
+		}),
+	)
+}
+
+func (s *SpectrumState) Update(gtx C) {
+	t := TrackerFromContext(gtx)
+	for s.chnModeBtn.Clicked(gtx) {
+		t.Model.SpecAnChannelsInt().SetValue((t.SpecAnChannelsInt().Value() + 1) % int(tracker.NumSpecChnModes))
+	}
+	for s.smoothingBtn.Clicked(gtx) {
+		r := t.Model.SpecAnSmoothing().Range()
+		t.Model.SpecAnSmoothing().SetValue((t.SpecAnSmoothing().Value()+1)%(r.Max-r.Min+1) + r.Min)
+	}
+}
+
+func (s *SpectrumState) drawSpectrum(gtx C) D {
+	t := TrackerFromContext(gtx)
+	for chn := range 2 {
+		paint.ColorOp{Color: t.Theme.Oscilloscope.CurveColors[chn]}.Add(gtx.Ops)
+		p := t.Spectrum()[chn]
+		if len(p) <= 0 {
+			continue
+		}
+		fillRect(gtx, clip.Rect{Min: image.Pt(0, 0), Max: image.Pt(gtx.Constraints.Max.X, 1)})
+		fillRect(gtx, clip.Rect{Min: image.Pt(0, gtx.Constraints.Min.Y-1), Max: image.Pt(gtx.Constraints.Max.X, gtx.Constraints.Max.Y)})
+		for px := range gtx.Constraints.Max.X {
+			y2 := gtx.Constraints.Max.Y - 1
+			y1 := int(-p[px*len(p)/gtx.Constraints.Max.X] / 80 * float32(y2))
+			fillRect(gtx, clip.Rect{Min: image.Pt(px, y1), Max: image.Pt(px+1, y2+1)})
+		}
+	}
+	return D{Size: image.Pt(gtx.Constraints.Max.X, gtx.Constraints.Max.Y)}
+}