feat(tracker): adding, setting, unsetting and deleting units

2025-07-18 21:14:31 -04:00 · 2021-02-04 21:50:41 +02:00
parent 29b289d2fb
commit 6307dd51de
8 changed files with 316 additions and 86 deletions
--- a/tracker/uniteditor.go
+++ b/tracker/uniteditor.go
@ -0,0 +1,132 @@
+package tracker
+
+import (
+	"image"
+	"image/color"
+	"sort"
+
+	"gioui.org/layout"
+	"gioui.org/op"
+	"gioui.org/op/clip"
+	"gioui.org/op/paint"
+	"gioui.org/unit"
+	"gioui.org/widget"
+	"gioui.org/widget/material"
+	"golang.org/x/exp/shiny/materialdesign/icons"
+)
+
+func (t *Tracker) layoutUnitEditor() layout.Widget {
+	editorFunc := t.layoutUnitSliders
+	if t.song.Patch.Instruments[t.CurrentInstrument].Units[t.CurrentUnit].Type == "" {
+		editorFunc = t.layoutUnitTypeChooser
+	}
+	return func(gtx C) D {
+		paint.FillShape(gtx.Ops, unitSurfaceColor, clip.Rect{Max: image.Pt(gtx.Constraints.Max.X, gtx.Constraints.Max.Y)}.Op())
+		return layout.Flex{Axis: layout.Vertical}.Layout(gtx,
+			layout.Flexed(1, editorFunc()),
+			layout.Rigid(t.layoutUnitFooter()),
+		)
+	}
+}
+
+func (t *Tracker) layoutUnitSliders() layout.Widget {
+	return func(gtx C) D {
+		params := t.song.Patch.Instruments[t.CurrentInstrument].Units[t.CurrentUnit].Parameters
+		count := len(params)
+		children := make([]layout.FlexChild, 0, count)
+		if len(t.ParameterSliders) < count {
+			tail := make([]*widget.Float, count-len(t.ParameterSliders))
+			for t := range tail {
+				tail[t] = new(widget.Float)
+			}
+			t.ParameterSliders = append(t.ParameterSliders, tail...)
+		}
+		keys := make([]string, 0, len(params))
+		for k := range params {
+			keys = append(keys, k)
+		}
+		sort.Strings(keys)
+		for i, k := range keys {
+			for t.ParameterSliders[i].Changed() {
+				params[k] = int(t.ParameterSliders[i].Value)
+				// TODO: tracker should have functions to update parameters and
+				// to do this efficiently i.e. not compile the whole patch again
+				t.LoadSong(t.song)
+			}
+			t.ParameterSliders[i].Value = float32(params[k])
+			sliderStyle := material.Slider(t.Theme, t.ParameterSliders[i], 0, 128)
+			sliderStyle.Color = t.Theme.Fg
+			k2 := k // avoid k changing in the closure
+			children = append(children, layout.Rigid(func(gtx C) D {
+				return layout.Flex{Axis: layout.Horizontal}.Layout(gtx,
+					layout.Rigid(Label(k2, white)),
+					layout.Rigid(func(gtx C) D {
+						gtx.Constraints.Min.X = 200
+						return sliderStyle.Layout(gtx)
+					}))
+			}))
+		}
+		return layout.Flex{Axis: layout.Vertical}.Layout(gtx, children...)
+	}
+}
+
+func (t *Tracker) layoutUnitFooter() layout.Widget {
+	return func(gtx C) D {
+		for t.ClearUnitBtn.Clicked() {
+			t.ClearUnit()
+			op.InvalidateOp{}.Add(gtx.Ops)
+		}
+		for t.DeleteUnitBtn.Clicked() {
+			t.DeleteUnit()
+			op.InvalidateOp{}.Add(gtx.Ops)
+		}
+		deleteUnitBtnStyle := material.IconButton(t.Theme, t.DeleteUnitBtn, widgetForIcon(icons.ActionDelete))
+		deleteUnitBtnStyle.Background = transparent
+		deleteUnitBtnStyle.Inset = layout.UniformInset(unit.Dp(6))
+		if len(t.song.Patch.Instruments[t.CurrentInstrument].Units) > 1 {
+			deleteUnitBtnStyle.Color = primaryColor
+		} else {
+			deleteUnitBtnStyle.Color = disabledTextColor
+		}
+		if t.song.Patch.Instruments[t.CurrentInstrument].Units[t.CurrentUnit].Type == "" {
+			return layout.Flex{Axis: layout.Horizontal}.Layout(gtx,
+				layout.Flexed(1, func(gtx C) D { return layout.Dimensions{Size: gtx.Constraints.Min} }),
+				layout.Rigid(deleteUnitBtnStyle.Layout))
+		}
+		clearUnitBtnStyle := material.IconButton(t.Theme, t.ClearUnitBtn, widgetForIcon(icons.ContentClear))
+		clearUnitBtnStyle.Color = primaryColor
+		clearUnitBtnStyle.Background = transparent
+		clearUnitBtnStyle.Inset = layout.UniformInset(unit.Dp(6))
+		return layout.Flex{Axis: layout.Horizontal}.Layout(gtx,
+			layout.Flexed(1, func(gtx C) D { return layout.Dimensions{Size: gtx.Constraints.Min} }),
+			layout.Rigid(clearUnitBtnStyle.Layout),
+			layout.Rigid(deleteUnitBtnStyle.Layout))
+	}
+}
+
+func (t *Tracker) layoutUnitTypeChooser() layout.Widget {
+	return func(gtx C) D {
+		paint.FillShape(gtx.Ops, unitSurfaceColor, clip.Rect{Max: image.Pt(gtx.Constraints.Max.X, gtx.Constraints.Max.Y)}.Op())
+		listElem := func(gtx C, i int) D {
+			for t.ChooseUnitTypeBtns[i].Clicked() {
+				u := defaultUnits[allUnits[i]]
+				t.song.Patch.Instruments[t.CurrentInstrument].Units[t.CurrentUnit] = (&u).Copy()
+			}
+			labelStyle := LabelStyle{Text: allUnits[i], ShadeColor: black, Color: white, Font: labelDefaultFont, FontSize: unit.Sp(12)}
+			bg := func(gtx C) D {
+				gtx.Constraints = layout.Exact(image.Pt(120, 20))
+				var color color.NRGBA
+				if t.ChooseUnitTypeBtns[i].Hovered() {
+					color = unitTypeListHighlightColor
+				}
+				paint.FillShape(gtx.Ops, color, clip.Rect{Max: image.Pt(gtx.Constraints.Min.X, gtx.Constraints.Min.Y)}.Op())
+				return D{Size: gtx.Constraints.Min}
+			}
+			return layout.Stack{Alignment: layout.W}.Layout(gtx,
+				layout.Stacked(bg),
+				layout.Expanded(labelStyle.Layout),
+				layout.Expanded(t.ChooseUnitTypeBtns[i].Layout))
+		}
+		return t.ChooseUnitTypeList.Layout(gtx, len(allUnits), listElem)
+	}
+}