95 lines
3.0 KiB
Go
95 lines
3.0 KiB
Go
package mujica
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import (
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"fmt"
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"log/slog"
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"github.com/egoist/mygo/ui"
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"mujicaui/internal"
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"mujicaui/theme"
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)
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// ChartCell is one chart of a MultiChartLayout: its symbol, period and view.
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type ChartCell struct {
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Symbol string
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Interval Interval
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View MarketView
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}
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// MultiChartState is the caller-held grid: how many cells show, all six cells' settings, and the active one.
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type MultiChartState struct {
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// Count is 1, 2, 4 or 6; zero is 1.
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Count int
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// Cells keep their settings while hidden, so changing the layout loses nothing.
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Cells [6]ChartCell
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Active int
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}
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// MultiChartLayoutOptions configure a MultiChartLayout.
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type MultiChartLayoutOptions struct {
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// Height of the grid; zero is 480.
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Height float32
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}
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// MultiChartLayout shows 1, 2, 4 or 6 charts in a grid, each built by cell with its own settings.
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func MultiChartLayout(c *ui.Context, state *MultiChartState, opts MultiChartLayoutOptions, cell func(i int, cell *ChartCell)) ChoiceResult {
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if state == nil || cell == nil {
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panic("mujica: MultiChartLayout needs a state and a cell builder")
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}
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if state.Count == 0 {
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state.Count = 1
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}
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cols := map[int]int{1: 1, 2: 2, 4: 2, 6: 3}[state.Count]
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if cols == 0 {
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panic(fmt.Sprintf("mujica: MultiChartLayout Count %d must be 1, 2, 4 or 6", state.Count))
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}
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if state.Active < 0 || state.Active >= state.Count {
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panic(fmt.Sprintf("mujica: MultiChartLayout Active %d outside %d cells", state.Active, state.Count))
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}
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k := Tokens(c)
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u := Density(c).Unit()
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h := opts.Height
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if h == 0 {
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h = 480
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}
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changed := false
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root := ui.Column(c).Gap(u * 2).FillWidth()
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root.Children(func() {
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sel := []int{state.Count}
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var items []ToggleItem[int]
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for _, n := range []int{1, 2, 4, 6} {
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items = append(items, ToggleItem[int]{Value: n, Label: fmt.Sprint(n), Name: fmt.Sprintf(msg(c, "multi_chart_layout.count"), n)})
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}
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ui.Row(c).Children(func() {
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if ToggleGroup(c, &sel, items, ToggleGroupOptions{Label: msg(c, "multi_chart_layout.label")}).Changed() {
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state.Count, changed = sel[0], true
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state.Active = min(state.Active, state.Count-1)
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slog.Debug("mujica: multi_chart_layout count", "count", state.Count)
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}
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})
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rows := (state.Count + cols - 1) / cols
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grid := ui.Box(c).Grid().Columns(cols).Gap(u * 2).Height(h).FillWidth()
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grid.Children(func() {
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for i := range state.Count {
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box := ui.Column(c).Key(i).MinWidth(0).MinHeight(0).Height((h - u*2*float32(rows-1)) / float32(rows)).Padding(u * 2).
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Background(k.Surface).Radius(theme.CardRadius).Clip().Role(ui.RoleGroup).
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Label(fmt.Sprintf(msg(c, "multi_chart_layout.cell"), i+1, state.Cells[i].Symbol))
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if i == state.Active && state.Count > 1 {
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box.Border(2, k.AccentText)
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box.DrawOver(func(p *ui.Painter, r ui.Rect) { internal.Frame(p, r, 3, 5, k.Ornament) })
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} else {
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box.Border(theme.BorderWidth, k.Border)
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}
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if box.FocusWithin() || box.Clicked() {
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if state.Active != i {
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state.Active, changed = i, true
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}
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}
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box.Children(func() { cell(i, &state.Cells[i]) })
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}
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})
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})
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return ChoiceResult{root, changed}
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}
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