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feat(sointu, tracker,...): restructure domain & tracker models
send targets are now by ID and Song has "Score" part, which is the notes for it. also, moved the model part separate of the actual gioui dependend stuff. sorry to my future self about the code bomb; ended up too far and did not find an easy way to rewrite the history to make the steps smaller, so in the end, just squashed everything.
This commit is contained in:
153
tracker/gioui/draglist.go
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153
tracker/gioui/draglist.go
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@ -0,0 +1,153 @@
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package gioui
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import (
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"image"
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"image/color"
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"gioui.org/io/pointer"
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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/material"
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)
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type DragList struct {
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SelectedItem int
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HoverItem int
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List *layout.List
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drag bool
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dragID pointer.ID
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tags []bool
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swapped bool
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}
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type FilledDragListStyle struct {
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dragList *DragList
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HoverColor color.NRGBA
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SelectedColor color.NRGBA
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Count int
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element func(gtx C, i int) D
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swap func(i, j int)
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}
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func FilledDragList(th *material.Theme, dragList *DragList, count int, element func(gtx C, i int) D, swap func(i, j int)) FilledDragListStyle {
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return FilledDragListStyle{
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dragList: dragList,
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element: element,
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swap: swap,
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Count: count,
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HoverColor: dragListHoverColor,
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SelectedColor: dragListSelectedColor,
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}
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}
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func (s *FilledDragListStyle) Layout(gtx C) D {
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swap := 0
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defer op.Save(gtx.Ops).Load()
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if s.dragList.List.Axis == layout.Horizontal {
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gtx.Constraints.Min.X = gtx.Constraints.Max.X
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} else {
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gtx.Constraints.Min.Y = gtx.Constraints.Max.Y
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}
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listElem := func(gtx C, index int) D {
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for len(s.dragList.tags) <= index {
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s.dragList.tags = append(s.dragList.tags, false)
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}
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bg := func(gtx C) D {
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var color color.NRGBA
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if s.dragList.SelectedItem == index {
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color = s.SelectedColor
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} else if s.dragList.HoverItem == index {
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color = s.HoverColor
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}
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paint.FillShape(gtx.Ops, color, clip.Rect{Max: image.Pt(gtx.Constraints.Min.X, gtx.Constraints.Min.Y)}.Op())
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return D{Size: gtx.Constraints.Min}
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}
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inputFg := func(gtx C) D {
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defer op.Save(gtx.Ops).Load()
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for _, ev := range gtx.Events(&s.dragList.tags[index]) {
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e, ok := ev.(pointer.Event)
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if !ok {
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continue
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}
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switch e.Type {
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case pointer.Enter:
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s.dragList.HoverItem = index
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case pointer.Leave:
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if s.dragList.HoverItem == index {
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s.dragList.HoverItem = -1
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}
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case pointer.Press:
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if s.dragList.drag {
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break
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}
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s.dragList.SelectedItem = index
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}
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}
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rect := image.Rect(0, 0, gtx.Constraints.Min.X, gtx.Constraints.Min.Y)
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pointer.Rect(rect).Add(gtx.Ops)
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pointer.InputOp{Tag: &s.dragList.tags[index],
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Types: pointer.Press | pointer.Enter | pointer.Leave,
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}.Add(gtx.Ops)
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if index == s.dragList.SelectedItem {
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for _, ev := range gtx.Events(s.dragList) {
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e, ok := ev.(pointer.Event)
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if !ok {
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continue
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}
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switch e.Type {
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case pointer.Press:
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s.dragList.dragID = e.PointerID
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case pointer.Drag:
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if s.dragList.dragID != e.PointerID {
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break
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}
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if s.dragList.List.Axis == layout.Horizontal {
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if e.Position.X < 0 {
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swap = -1
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}
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if e.Position.X > float32(gtx.Constraints.Min.X) {
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swap = 1
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}
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} else {
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if e.Position.Y < 0 {
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swap = -1
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}
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if e.Position.Y > float32(gtx.Constraints.Min.Y) {
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swap = 1
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}
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}
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case pointer.Release:
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fallthrough
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case pointer.Cancel:
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s.dragList.drag = false
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}
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}
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pointer.InputOp{Tag: s.dragList,
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Types: pointer.Drag | pointer.Press | pointer.Release,
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Grab: s.dragList.drag,
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}.Add(gtx.Ops)
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}
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return layout.Dimensions{Size: gtx.Constraints.Min}
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}
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return layout.Stack{Alignment: layout.W}.Layout(gtx,
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layout.Expanded(bg),
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layout.Stacked(func(gtx C) D {
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return s.element(gtx, index)
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}),
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layout.Expanded(inputFg))
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}
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dims := s.dragList.List.Layout(gtx, s.Count, listElem)
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if !s.dragList.swapped && swap != 0 && s.dragList.SelectedItem+swap >= 0 && s.dragList.SelectedItem+swap < s.Count {
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s.swap(s.dragList.SelectedItem, s.dragList.SelectedItem+swap)
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s.dragList.SelectedItem += swap
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s.dragList.swapped = true
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} else {
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s.dragList.swapped = false
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}
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return dims
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}
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