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a38a0f4235
text.Shaper is not thread safe, which caused crash when adding multiple VSTI plugins to a DAW project. This change fixes that crash. Further refactorings need to consider where that text.Shaper should actually reside.
71 lines
2.4 KiB
Go
71 lines
2.4 KiB
Go
package gioui
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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/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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)
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const rowMarkerWidth = 50
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func (t *Tracker) layoutRowMarkers(gtx C) D {
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gtx.Constraints.Min.X = rowMarkerWidth
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paint.FillShape(gtx.Ops, rowMarkerSurfaceColor, clip.Rect{
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Max: gtx.Constraints.Max,
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}.Op())
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//defer op.Save(gtx.Ops).Load()
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defer clip.Rect{Max: gtx.Constraints.Max}.Push(gtx.Ops).Pop()
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op.Offset(image.Pt(0, (gtx.Constraints.Max.Y-trackRowHeight)/2)).Add(gtx.Ops)
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cursorSongRow := t.Cursor().Pattern*t.Song().Score.RowsPerPattern + t.Cursor().Row
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playPos := t.PlayPosition()
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playSongRow := playPos.Pattern*t.Song().Score.RowsPerPattern + playPos.Row
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op.Offset(image.Pt(0, (-1*trackRowHeight)*(cursorSongRow))).Add(gtx.Ops)
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beatMarkerDensity := t.Song().RowsPerBeat
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for beatMarkerDensity <= 2 {
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beatMarkerDensity *= 2
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}
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for i := 0; i < t.Song().Score.Length; i++ {
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for j := 0; j < t.Song().Score.RowsPerPattern; j++ {
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songRow := i*t.Song().Score.RowsPerPattern + j
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if mod(songRow, beatMarkerDensity*2) == 0 {
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paint.FillShape(gtx.Ops, twoBeatHighlight, clip.Rect{Max: image.Pt(gtx.Constraints.Max.X, trackRowHeight)}.Op())
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} else if mod(songRow, beatMarkerDensity) == 0 {
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paint.FillShape(gtx.Ops, oneBeatHighlight, clip.Rect{Max: image.Pt(gtx.Constraints.Max.X, trackRowHeight)}.Op())
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}
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if t.Playing() && songRow == playSongRow {
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paint.FillShape(gtx.Ops, trackerPlayColor, clip.Rect{Max: image.Pt(gtx.Constraints.Max.X, trackRowHeight)}.Op())
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}
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if j == 0 {
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paint.ColorOp{Color: rowMarkerPatternTextColor}.Add(gtx.Ops)
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widget.Label{}.Layout(gtx, t.TextShaper, trackerFont, trackerFontSize, strings.ToUpper(fmt.Sprintf("%02x", i)), op.CallOp{})
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}
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if t.TrackEditor.Focused() && songRow == cursorSongRow {
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paint.ColorOp{Color: trackerActiveTextColor}.Add(gtx.Ops)
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} else {
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paint.ColorOp{Color: rowMarkerRowTextColor}.Add(gtx.Ops)
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}
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op.Offset(image.Pt(rowMarkerWidth/2, 0)).Add(gtx.Ops)
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widget.Label{}.Layout(gtx, t.TextShaper, trackerFont, trackerFontSize, strings.ToUpper(fmt.Sprintf("%02x", j)), op.CallOp{})
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op.Offset(image.Pt(-rowMarkerWidth/2, trackRowHeight)).Add(gtx.Ops)
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}
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}
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return layout.Dimensions{Size: image.Pt(rowMarkerWidth, gtx.Constraints.Max.Y)}
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}
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func mod(a, b int) int {
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m := a % b
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if a < 0 && b < 0 {
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m -= b
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}
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if a < 0 && b > 0 {
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m += b
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}
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return m
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}
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