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feat(tracker): add row number markers to the left

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vsariola
2021-01-08 15:36:11 +02:00
parent 82d26b79a4
commit 92ab035101
2 changed files with 64 additions and 2 deletions
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53
tracker/rowmarkers.go Normal file
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@ -0,0 +1,53 @@
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"
)
const rowMarkerWidth = 50
func (t *Tracker) layoutRowMarkers(patternRows, sequenceLength, cursorRow, cursorPattern, cursorCol, playRow, playPattern int) layout.Widget {
return func(gtx layout.Context) layout.Dimensions {
gtx.Constraints.Min.X = rowMarkerWidth
gtx.Constraints.Max.X = rowMarkerWidth
paint.FillShape(gtx.Ops, inactiveTrackColor, clip.Rect{
Max: gtx.Constraints.Max,
}.Op())
defer op.Push(gtx.Ops).Pop()
clip.Rect{Max: gtx.Constraints.Max}.Add(gtx.Ops)
op.Offset(f32.Pt(0, float32(gtx.Constraints.Max.Y/2)-trackRowHeight)).Add(gtx.Ops)
cursorSongRow := cursorPattern*patternRows + cursorRow
playSongRow := playPattern*patternRows + playRow
op.Offset(f32.Pt(0, (-1*trackRowHeight)*float32(cursorSongRow))).Add(gtx.Ops)
for i := 0; i < sequenceLength; i++ {
for j := 0; j < patternRows; j++ {
songRow := i*patternRows + j
if songRow == playSongRow {
paint.FillShape(gtx.Ops, trackerPlayColor, clip.Rect{Max: image.Pt(trackWidth, trackRowHeight)}.Op())
}
if j == 0 {
paint.ColorOp{Color: trackerPatMarker}.Add(gtx.Ops)
widget.Label{}.Layout(gtx, textShaper, trackerFont, trackerFontSize, strings.ToUpper(fmt.Sprintf("%02x", i)))
}
if songRow == cursorSongRow {
paint.ColorOp{Color: trackerActiveTextColor}.Add(gtx.Ops)
} else {
paint.ColorOp{Color: trackerInactiveTextColor}.Add(gtx.Ops)
}
op.Offset(f32.Pt(rowMarkerWidth/2, 0)).Add(gtx.Ops)
widget.Label{}.Layout(gtx, textShaper, trackerFont, trackerFontSize, strings.ToUpper(fmt.Sprintf("%02x", j)))
op.Offset(f32.Pt(-rowMarkerWidth/2, trackRowHeight)).Add(gtx.Ops)
}
}
return layout.Dimensions{Size: gtx.Constraints.Max}
}
}