mirror of
https://github.com/vsariola/sointu.git
synced 2025-05-28 03:10:24 -04:00
58 lines
2.0 KiB
Go
58 lines
2.0 KiB
Go
package tracker
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import (
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"fmt"
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"image"
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"strings"
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"gioui.org/f32"
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"gioui.org/layout"
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"gioui.org/op"
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"gioui.org/op/clip"
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"gioui.org/op/paint"
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"gioui.org/widget"
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"github.com/vsariola/sointu"
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)
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const patternCellHeight = 16
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const patternCellWidth = 16
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const patternVisibleTracks = 8
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const patternRowMarkerWidth = 30
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func (t *Tracker) layoutPatterns(tracks []sointu.Track, activeTrack, cursorPattern, cursorCol, playingPattern int) layout.Widget {
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return func(gtx layout.Context) layout.Dimensions {
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gtx.Constraints.Min.X = patternCellWidth*patternVisibleTracks + patternRowMarkerWidth
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gtx.Constraints.Max.X = patternCellWidth*patternVisibleTracks + patternRowMarkerWidth
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defer op.Push(gtx.Ops).Pop()
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clip.Rect{Max: gtx.Constraints.Max}.Add(gtx.Ops)
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paint.FillShape(gtx.Ops, patternSurfaceColor, clip.Rect{Max: image.Pt(gtx.Constraints.Max.X, gtx.Constraints.Max.Y)}.Op())
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for j := range tracks[0].Sequence {
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if j == playingPattern {
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paint.FillShape(gtx.Ops, patternPlayColor, clip.Rect{Max: image.Pt(gtx.Constraints.Max.X, patternCellHeight)}.Op())
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}
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paint.ColorOp{Color: rowMarkerPatternTextColor}.Add(gtx.Ops)
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widget.Label{}.Layout(gtx, textShaper, trackerFont, trackerFontSize, strings.ToUpper(fmt.Sprintf("%02x", j)))
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stack := op.Push(gtx.Ops)
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op.Offset(f32.Pt(patternRowMarkerWidth, 0)).Add(gtx.Ops)
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for i, track := range tracks {
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paint.ColorOp{Color: patternTextColor}.Add(gtx.Ops)
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widget.Label{}.Layout(gtx, textShaper, trackerFont, trackerFontSize, fmt.Sprintf("%d", track.Sequence[j]))
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if activeTrack == i && j == cursorPattern {
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paint.FillShape(gtx.Ops, patternCursorColor, clip.Rect{Max: image.Pt(patternCellWidth, patternCellHeight)}.Op())
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}
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op.Offset(f32.Pt(patternCellWidth, 0)).Add(gtx.Ops)
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}
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stack.Pop()
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op.Offset(f32.Pt(0, patternCellHeight)).Add(gtx.Ops)
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}
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return layout.Dimensions{Size: gtx.Constraints.Max}
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}
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}
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func patternIndexToString(index byte) string {
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if index < 10 {
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return string([]byte{'0' + index})
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}
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return string([]byte{'A' + index - 10})
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}
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