mirror of
https://github.com/vsariola/sointu.git
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d92426a100
The Model was getting unmaintanable mess. This is an attempt to refactor/rewrite the Model so that data of certain type is exposed in standardized way, offering certain standard manipulations for that data type, and on the GUI side, certain standard widgets to tied to that data. This rewrite closes #72, #106 and #120.
259 lines
7.9 KiB
Go
259 lines
7.9 KiB
Go
package gioui
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import (
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"image"
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"gioui.org/io/clipboard"
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"gioui.org/io/key"
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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/unit"
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"gioui.org/widget/material"
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"github.com/vsariola/sointu/tracker"
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)
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type ScrollTable struct {
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ColTitleList *DragList
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RowTitleList *DragList
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Table tracker.Table
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focused bool
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requestFocus bool
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tag bool
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colTag bool
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rowTag bool
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cursorMoved bool
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}
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type ScrollTableStyle struct {
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RowTitleStyle FilledDragListStyle
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ColTitleStyle FilledDragListStyle
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ScrollTable *ScrollTable
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ScrollBarWidth unit.Dp
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RowTitleWidth unit.Dp
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ColumnTitleHeight unit.Dp
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CellWidth unit.Dp
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CellHeight unit.Dp
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element func(gtx C, x, y int) D
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}
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func NewScrollTable(table tracker.Table, vertList, horizList tracker.List) *ScrollTable {
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return &ScrollTable{
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Table: table,
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ColTitleList: NewDragList(vertList, layout.Horizontal),
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RowTitleList: NewDragList(horizList, layout.Vertical),
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}
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}
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func FilledScrollTable(th *material.Theme, scrollTable *ScrollTable, element func(gtx C, x, y int) D, colTitle, rowTitle, colTitleBg, rowTitleBg func(gtx C, i int) D) ScrollTableStyle {
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return ScrollTableStyle{
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RowTitleStyle: FilledDragList(th, scrollTable.RowTitleList, rowTitle, rowTitleBg),
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ColTitleStyle: FilledDragList(th, scrollTable.ColTitleList, colTitle, colTitleBg),
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ScrollTable: scrollTable,
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element: element,
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ScrollBarWidth: unit.Dp(14),
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RowTitleWidth: unit.Dp(30),
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ColumnTitleHeight: unit.Dp(16),
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CellWidth: unit.Dp(16),
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CellHeight: unit.Dp(16),
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}
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}
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func (st *ScrollTable) CursorMoved() bool {
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ret := st.cursorMoved
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st.cursorMoved = false
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return ret
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}
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func (st *ScrollTable) Focus() {
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st.requestFocus = true
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}
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func (st *ScrollTable) Focused() bool {
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return st.focused
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}
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func (st *ScrollTable) EnsureCursorVisible() {
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st.ColTitleList.EnsureVisible(st.Table.Cursor().X)
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st.RowTitleList.EnsureVisible(st.Table.Cursor().Y)
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}
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func (st *ScrollTable) ChildFocused() bool {
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return st.ColTitleList.Focused() || st.RowTitleList.Focused()
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}
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func (s ScrollTableStyle) Layout(gtx C) D {
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p := image.Pt(gtx.Dp(s.RowTitleWidth), gtx.Dp(s.ColumnTitleHeight))
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for _, e := range gtx.Events(&s.ScrollTable.tag) {
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switch e := e.(type) {
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case key.FocusEvent:
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s.ScrollTable.focused = e.Focus
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case pointer.Event:
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if e.Position.X >= float32(p.X) && e.Position.Y >= float32(p.Y) {
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if e.Type == pointer.Press {
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key.FocusOp{Tag: &s.ScrollTable.tag}.Add(gtx.Ops)
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}
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dx := (int(e.Position.X) + s.ScrollTable.ColTitleList.List.Position.Offset - p.X) / gtx.Dp(s.CellWidth)
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dy := (int(e.Position.Y) + s.ScrollTable.RowTitleList.List.Position.Offset - p.Y) / gtx.Dp(s.CellHeight)
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x := dx + s.ScrollTable.ColTitleList.List.Position.First
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y := dy + s.ScrollTable.RowTitleList.List.Position.First
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s.ScrollTable.Table.SetCursor(
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tracker.Point{X: x, Y: y},
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)
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if !e.Modifiers.Contain(key.ModShift) {
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s.ScrollTable.Table.SetCursor2(s.ScrollTable.Table.Cursor())
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}
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s.ScrollTable.cursorMoved = true
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}
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case key.Event:
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if e.State == key.Press {
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s.ScrollTable.command(gtx, e)
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}
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case clipboard.Event:
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s.ScrollTable.Table.Paste([]byte(e.Text))
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}
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}
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for _, e := range gtx.Events(&s.ScrollTable.rowTag) {
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if e, ok := e.(key.Event); ok && e.State == key.Press {
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s.ScrollTable.Focus()
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}
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}
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for _, e := range gtx.Events(&s.ScrollTable.colTag) {
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if e, ok := e.(key.Event); ok && e.State == key.Press {
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s.ScrollTable.Focus()
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}
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}
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return Surface{Gray: 24, Focus: s.ScrollTable.Focused() || s.ScrollTable.ChildFocused()}.Layout(gtx, func(gtx C) D {
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defer clip.Rect(image.Rect(0, 0, gtx.Constraints.Max.X, gtx.Constraints.Max.Y)).Push(gtx.Ops).Pop()
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pointer.InputOp{
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Tag: &s.ScrollTable.tag,
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Types: pointer.Press,
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}.Add(gtx.Ops)
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dims := gtx.Constraints.Max
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s.layoutColTitles(gtx, p)
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s.layoutRowTitles(gtx, p)
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defer op.Offset(p).Push(gtx.Ops).Pop()
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gtx.Constraints = layout.Exact(image.Pt(gtx.Constraints.Max.X-p.X, gtx.Constraints.Max.Y-p.Y))
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s.layoutTable(gtx, p)
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s.RowTitleStyle.LayoutScrollBar(gtx)
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s.ColTitleStyle.LayoutScrollBar(gtx)
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return D{Size: dims}
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})
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}
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func (s ScrollTableStyle) layoutTable(gtx C, p image.Point) {
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defer clip.Rect(image.Rectangle{Max: gtx.Constraints.Min}).Push(gtx.Ops).Pop()
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if s.ScrollTable.requestFocus {
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s.ScrollTable.requestFocus = false
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key.FocusOp{Tag: &s.ScrollTable.tag}.Add(gtx.Ops)
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}
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key.InputOp{Tag: &s.ScrollTable.tag, Keys: "←|→|↑|↓|Shift-←|Shift-→|Shift-↑|Shift-↓|Ctrl-←|Ctrl-→|Ctrl-↑|Ctrl-↓|Ctrl-Shift-←|Ctrl-Shift-→|Ctrl-Shift-↑|Ctrl-Shift-↓|Alt-←|Alt-→|Alt-↑|Alt-↓|Alt-Shift-←|Alt-Shift-→|Alt-Shift-↑|Alt-Shift-↓|⇱|⇲|Shift-⇱|Shift-⇲|⌫|⌦|⇞|⇟|Shift-⇞|Shift-⇟|Ctrl-C|Ctrl-V|Ctrl-X|Shift-,|Shift-."}.Add(gtx.Ops)
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cellWidth := gtx.Dp(s.CellWidth)
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cellHeight := gtx.Dp(s.CellHeight)
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gtx.Constraints = layout.Exact(image.Pt(cellWidth, cellHeight))
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colP := s.ColTitleStyle.dragList.List.Position
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rowP := s.RowTitleStyle.dragList.List.Position
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defer op.Offset(image.Pt(-colP.Offset, -rowP.Offset)).Push(gtx.Ops).Pop()
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for x := colP.First; x < colP.First+colP.Count; x++ {
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offs := op.Offset(image.Point{}).Push(gtx.Ops)
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for y := rowP.First; y < rowP.First+rowP.Count; y++ {
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s.element(gtx, x, y)
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op.Offset(image.Pt(0, cellHeight)).Add(gtx.Ops)
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}
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offs.Pop()
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op.Offset(image.Pt(cellWidth, 0)).Add(gtx.Ops)
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}
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}
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func (s *ScrollTableStyle) layoutRowTitles(gtx C, p image.Point) {
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defer op.Offset(image.Pt(0, p.Y)).Push(gtx.Ops).Pop()
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gtx.Constraints.Min.X = p.X
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gtx.Constraints.Max.Y -= p.Y
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gtx.Constraints.Min.Y = gtx.Constraints.Max.Y
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defer clip.Rect(image.Rectangle{Max: gtx.Constraints.Max}).Push(gtx.Ops).Pop()
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key.InputOp{Tag: &s.ScrollTable.rowTag, Keys: "→"}.Add(gtx.Ops)
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s.RowTitleStyle.Layout(gtx)
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}
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func (s *ScrollTableStyle) layoutColTitles(gtx C, p image.Point) {
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defer op.Offset(image.Pt(p.X, 0)).Push(gtx.Ops).Pop()
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gtx.Constraints.Min.Y = p.Y
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gtx.Constraints.Max.X -= p.X
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gtx.Constraints.Min.X = gtx.Constraints.Max.X
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defer clip.Rect(image.Rectangle{Max: gtx.Constraints.Max}).Push(gtx.Ops).Pop()
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key.InputOp{Tag: &s.ScrollTable.colTag, Keys: "↓"}.Add(gtx.Ops)
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s.ColTitleStyle.Layout(gtx)
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}
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func (s *ScrollTable) command(gtx C, e key.Event) {
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stepX := 1
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stepY := 1
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if e.Modifiers.Contain(key.ModAlt) {
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stepX = intMax(s.ColTitleList.List.Position.Count-3, 8)
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stepY = intMax(s.RowTitleList.List.Position.Count-3, 8)
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} else if e.Modifiers.Contain(key.ModCtrl) {
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stepX = 1e6
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stepY = 1e6
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}
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switch e.Name {
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case "X", "C":
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if e.Modifiers.Contain(key.ModShortcut) {
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contents, ok := s.Table.Copy()
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if !ok {
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return
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}
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clipboard.WriteOp{Text: string(contents)}.Add(gtx.Ops)
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if e.Name == "X" {
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s.Table.Clear()
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}
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return
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}
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case "V":
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if e.Modifiers.Contain(key.ModShortcut) {
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clipboard.ReadOp{Tag: &s.tag}.Add(gtx.Ops)
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}
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return
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case key.NameDeleteBackward, key.NameDeleteForward:
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s.Table.Clear()
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return
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case key.NameUpArrow:
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if !s.Table.MoveCursor(0, -stepY) && stepY == 1 {
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s.ColTitleList.Focus()
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}
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case key.NameDownArrow:
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s.Table.MoveCursor(0, stepY)
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case key.NameLeftArrow:
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if !s.Table.MoveCursor(-stepX, 0) && stepX == 1 {
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s.RowTitleList.Focus()
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}
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case key.NameRightArrow:
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s.Table.MoveCursor(stepX, 0)
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case key.NamePageUp:
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s.Table.MoveCursor(0, -intMax(s.RowTitleList.List.Position.Count-3, 8))
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case key.NamePageDown:
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s.Table.MoveCursor(0, intMax(s.RowTitleList.List.Position.Count-3, 8))
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case key.NameHome:
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s.Table.SetCursorX(0)
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case key.NameEnd:
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s.Table.SetCursorX(s.Table.Width() - 1)
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case ".":
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s.Table.Add(1)
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case ",":
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s.Table.Add(-1)
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}
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if !e.Modifiers.Contain(key.ModShift) {
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s.Table.SetCursor2(s.Table.Cursor())
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}
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s.ColTitleList.EnsureVisible(s.Table.Cursor().X)
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s.RowTitleList.EnsureVisible(s.Table.Cursor().Y)
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s.cursorMoved = true
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}
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