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feat(tracker): show currently active pattern notes with lighter text

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vsariola
2021-01-06 15:35:14 +02:00
parent 12e1bde2a2
commit 91766e198d
3 changed files with 36 additions and 35 deletions
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44
tracker/track.go
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@ -2,20 +2,21 @@ package tracker
import (
"fmt"
"image"
"strings"
"gioui.org/f32"
"gioui.org/layout"
"gioui.org/op"
"gioui.org/op/clip"
"gioui.org/op/paint"
"gioui.org/widget"
"image"
"strings"
)
const trackRowHeight = 16
const trackWidth = 100
func (t *Tracker) layoutTrack(notes []byte, active bool, cursorRow, cursorCol, playingRow int) layout.Widget {
func (t *Tracker) layoutTrack(patterns [][]byte, sequence []byte, active bool, cursorRow, cursorPattern, cursorCol, playRow, playPattern int) layout.Widget {
return func(gtx layout.Context) layout.Dimensions {
gtx.Constraints.Min.X = trackWidth
gtx.Constraints.Max.X = trackWidth
@ -43,20 +44,31 @@ func (t *Tracker) layoutTrack(notes []byte, active bool, cursorRow, cursorCol, p
s.Pop()
}
}
op.Offset(f32.Pt(0, (-1*trackRowHeight)*float32(cursorRow))).Add(gtx.Ops)
for i, c := range notes {
if i == playingRow {
paint.FillShape(gtx.Ops, trackerPlayColor, clip.Rect{Max: image.Pt(trackWidth, trackRowHeight)}.Op())
// TODO: this is a time bomb; as soon as one of the patterns is not the same length as rest. Find a solution
// to fix the pattern lengths to a constant value
cursorSongRow := cursorPattern*len(patterns[0]) + cursorRow
playSongRow := playPattern*len(patterns[0]) + playRow
op.Offset(f32.Pt(0, (-1*trackRowHeight)*float32(cursorSongRow))).Add(gtx.Ops)
for i, s := range sequence {
for j, c := range patterns[s] {
songRow := i*len(patterns[0]) + j
if songRow == playSongRow {
paint.FillShape(gtx.Ops, trackerPlayColor, clip.Rect{Max: image.Pt(trackWidth, trackRowHeight)}.Op())
}
if songRow == cursorSongRow {
paint.ColorOp{Color: trackerActiveTextColor}.Add(gtx.Ops)
} else {
if cursorPattern == i {
paint.ColorOp{Color: trackerTextColor}.Add(gtx.Ops)
} else {
paint.ColorOp{Color: trackerInactiveTextColor}.Add(gtx.Ops)
}
}
widget.Label{}.Layout(gtx, textShaper, trackerFont, trackerFontSize, valueAsNote(c))
op.Offset(f32.Pt(trackWidth/2, 0)).Add(gtx.Ops)
widget.Label{}.Layout(gtx, textShaper, trackerFont, trackerFontSize, strings.ToUpper(fmt.Sprintf("%02x", c)))
op.Offset(f32.Pt(-trackWidth/2, trackRowHeight)).Add(gtx.Ops)
}
if i == cursorRow {
paint.ColorOp{Color: trackerActiveTextColor}.Add(gtx.Ops)
} else {
paint.ColorOp{Color: trackerTextColor}.Add(gtx.Ops)
}
widget.Label{}.Layout(gtx, textShaper, trackerFont, trackerFontSize, valueAsNote(c))
op.Offset(f32.Pt(trackWidth/2, 0)).Add(gtx.Ops)
widget.Label{}.Layout(gtx, textShaper, trackerFont, trackerFontSize, strings.ToUpper(fmt.Sprintf("%02x", c)))
op.Offset(f32.Pt(-trackWidth/2, trackRowHeight)).Add(gtx.Ops)
}
return layout.Dimensions{Size: gtx.Constraints.Max}
}